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    • 专利摘要:
    SIDE AIRBAG DEVICE FOR VEHICLE. It is a vehicle side airbag device whereby the upper arm area of a seated occupant is prevented from being interposed between a seated passenger chest area and a side airbag and the seated passenger shoulder area can be satisfactorily restricted by the side airbag regardless of the type of side impact. When a side airbag (20) is deployed in an expanded manner, a front extension (32B), provided for the top of a rear bag section (32), extends forward in the vehicle from the side of the shoulder (S) of the seated occupant (P) and is placed over a front bag section (30). The front extension (32B) is designed to be smaller in the vehicle width direction than the front bag section (30) and the vehicle's transverse inner surface of the upper end of the front bag section (30) is slanted or curved so that it rises as it extends outward in the vehicle width direction. The upper arm area (A) is raised by sliding contact with that surface.
    公开号:BR112014015889B1
    申请号:R112014015889-4
    申请日:2012-04-17
    公开日:2020-12-01
    发明作者:Satoshi Fukushima；Shigeki Hayashi；Shinobu Tanaka
    申请人:Toyota Jidosha Kabushiki Kaisha；
    IPC主号:
    专利说明:

    Technical Field
    [0001] The present invention relates to a side airbag device (air bag) for a vehicle. Background Technique
    [0002] In the side airbag device for a vehicle which is set out in Patent Document 1 below, an airbag has a portion of the rear side tube bag which, in a moment of inflation and expansion, extends in the vertical direction on the side more towards the rear of the vehicle than an outside end of the vehicle's transverse direction from the chest portion of a seated passenger and a front side tube bag portion that is positioned more towards the front side of the vehicle. than the rear bag side portion of the tube and towards the front side of the vehicle than the vehicle's transverse direction outer side end of the seated passenger's chest portion and extending in the vertical direction. The upper portion of the rear side tube bag portion is intended to be a shoulder restraint portion which is positioned next to and restrains the shoulder portion of the seated passenger. The upper flange of the front side tube bag is intended to be an arm support portion that is in a lower position than the passenger's armpit seated more towards the front side of the vehicle than the shoulder restraint portion and in which the upper arm portion of the seated passenger is placed.
    [0003] In particular, in that side airbag device for a vehicle, the shoulder portion of the seated passenger, which has a relatively high resistance, is restricted by the shoulder restraint portion and, on the other hand, the upper arm portion which it becomes interposed between the airbag and the chest portion of the seated passenger, which has relatively low resistance, is suppressed due to the fact that the upper arm portion of the seated passenger is placed in the armrest portion. Prior Art Documents Patent Documents
    [0004] Patent Document 1: Patent application open to public inspection No. JP 2010-132072 Disclosure of the Invention Technical problem
    [0005] However, in a case where the shape of a side collision is a so-called oblique side collision, there are cases where the seated passenger moves inertly towards the oblique front side of the vehicle. In such a case, there is a possibility that the seated passenger shoulder portion will move away from the shoulder restraint portion and that the seated passenger shoulder restraint will not continue to rise during the second half of the collision.
    [0006] In view of the circumstances described above, an objective of the present invention is to provide a side airbag device for a vehicle in which the upper arm portion of a seated passenger that becomes interposed between the seated passenger's chest portion and a The side airbag can be suppressed and this can restrict the shoulder portion of the seated passenger by means of the side airbag well regardless of the form of a side impact. Solution To Problem
    [0007] A side airbag device for a vehicle that refers to a first aspect of the present invention comprising: an inflator that is provided on a vehicle seat and that, when a vehicle's side collision is detected or predicted, is operated and generates gas; and a side airbag that is provided on a side portion of a vehicle seat backrest and which inflates and expands between a seated passenger and a vehicle body side portion due to the gas that the inflator generates is supplied to an interior of the side airbag and which, in an inflated and expanded state, is divided into a portion of the front side bag and a portion of the rear side bag that are aligned in a longitudinal direction of vehicle and in which a portion that extends forward, which is provided in an upper portion of the rear side bag portion, extends from one side of a seated shoulder portion of the passenger towards a front side of the vehicle and is arranged above the front portion of the vehicle. front side pouch and, due to a dimension in a transverse vehicle direction of the forward extending portion being defined to be smaller than that of the front side pouch portion, an inner side of vehicle transverse direction in u The upper end side of the front side pocket portion is tilted or curved in such a way that it rises as it proceeds to an outside side of the vehicle's cross direction.
    [0008] It is observed that in the first aspect the relationship between the passenger and the side airbag is defined by using, for example, a World side impact doll (WorldSID).
    [0009] In the first aspect, when a side collision of the vehicle is detected or predicted, the inflator is operated and generates gas, and the gas is supplied into the side airbag. For this reason, the side airbag inflates and expands between the seated passenger and a side portion of the vehicle body. This side airbag is divided into a front side bag portion and a rear side bag portion, which are aligned in the longitudinal direction of the vehicle in the inflated and expanded state. A forward-extending portion that is provided in the upper portion of the rear side bag portion extends from one side of the shoulder portion of the seated passenger towards the front side of the vehicle and is arranged over the rear bag portion. front side. The dimension in the transverse direction of the vehicle (the inflated thickness) of this portion that extends forward is defined to be smaller than that of the front side bag portion. For this reason, the inner side surface of the transverse direction of the vehicle on the upper end side of the front side pocket portion is inclined or curved in such a way that it rises as it proceeds towards the outer side of the transverse direction of vehicle.
    [0010] Therefore, due to the fact that the side airbag and the seated passenger are relatively close together due to the impact of a side collision, the aforementioned inclined or curved surface and the upper arm portion of the seated passenger come into contact in a manner sliding and the force that elevates the upper arm portion is generated. As a result, the upper arm portion is raised above the front side pouch portion and is restricted by the forward extending portion that is arranged over the front side pouch portion. For this reason, the upper arm portion that becomes interposed between the seated passenger's chest portion and the side airbag can be suppressed.
    [0011] Furthermore, as described above, the forward extending portion described above extends from the side of the shoulder portion of the passenger seated towards the front side of the vehicle and is arranged over the front side bag portion. Therefore, for example, even when the shape of the side collision is an oblique side collision and the seated passenger moves inertly towards the oblique front side of the vehicle, it can be done so that the shoulder portion of the seated passenger does not move away of the portion that extends forward. For this reason, the shoulder portion of the seated passenger can be well restricted by the side airbag regardless of the shape of the side impact.
    [0012] In a side airbag device for a vehicle in relation to a second aspect of the present invention, in the first aspect, the front side bag portion has a rear extending portion that extends below the portion side bag pouch and inflates and expands on one side of an abdomen portion and front chest portion side of the seated passenger and the rear side pouch portion inflates and expands on one side of a rear portion side of the chest and the shoulder portion of the seated passenger.
    [0013] In the second aspect, the abdomen portion and the front side of the seated thorax portion of the seated passenger, which have relatively low resistance, can be restricted by the frontal side bag portion that is inflated and expanded. Additionally, the rear side of the chest portion and the shoulder portion of the seated passenger, which have relatively high strength, can be restricted by the rear side bag portion that is inflated and expanded. In addition, because the seated passenger upper arm portion which has relatively high resistance is elevated as described above, that upper arm portion can be restricted by the portion extending in front of the rear side bag portion. In addition, the seated passenger's chest portion may be restricted from the front and rear by means of the front side pouch portion and the rear side pouch portion and the lateral surface of the thorax portion may be restricted in such a way that it is covered along their curve. For this reason, the positional relationship, in the longitudinal direction of the vehicle, of the chest portion and the side airbag can be stabilized.
    [0014] In a side airbag device for a vehicle in relation to a third aspect of the present invention, in the second aspect, the side airbag is formed in such a way that a limit, in the longitudinal direction of the vehicle, of the bag portion of front side and the rear side bag portion in an inflated and expanded state is facing a central side in a longitudinal direction of a seated passenger chest portion.
    [0015] In the third aspect, a sewn portion or a rope, which divides the side airbag into the front side bag portion and the rear side bag portion, is usually defined in the previously mentioned limit. Therefore, in the vicinity of this limit, the side of the vehicle's transverse direction inner side of the side airbag is concave towards the vehicle's transverse direction outer side. Consequently, due to this concavity that touches the central side of a longitudinal direction on the lateral surface of the thorax portion (that is, the side that protrudes outward, mainly towards the external side of the transverse direction of the vehicle), the load for the chest portion (ribs and the like) can be reduced.
    [0016] In a side airbag device for a vehicle in relation to a fourth aspect of the present invention, in the second or third aspect, the side airbag is structured in such a way that, in an inflated and expanded state, an internal pressure of the the rear side bag portion is greater than an internal pressure of the front side bag portion.
    [0017] In the fourth aspect, in the state in which the side airbag is inflated and expanded, the internal pressure of the rear side bag portion, which restricts the rear side of the chest portion, the shoulder portion and the upper arm portion of the seated passenger who has a relatively high resistance, are higher than the internal pressure of the front side bag portion which restricts the front side of the chest portion and the abdomen portion of the seated passenger which has a relatively low resistance. For this reason, regions that have a relatively high resistance can be restricted effectively while the load for regions of the seated passenger body that have a relatively low resistance is reduced. As a result, the passenger restraint performance through the side airbag can be optimized.
    [0018] In a side airbag device for a vehicle in relation to a fifth aspect of the present invention, in any aspect from the first to the fourth aspect, a non-inflatable portion is provided in the side airbag between an upper end of the bag portion front side and the portion that extends forward.
    [0019] In the fifth aspect, the non-inflatable portion is provided in the side air bag as described above. Therefore, it can be done so that the portion that extends forward does not interfere with the upper arm portion at the moment when the upper arm portion of the seated passenger is raised due to sliding contact with the transverse direction inner side surface. vehicle on the upper end side of the front side bag portion. For this reason, the upper arm portion can be raised even better.
    [0020] In a side airbag device for a vehicle in relation to the sixth aspect of the present invention, in any aspect from the first to the fifth aspect, the portion extending forward is formed in such a way that a dimension, in one vertical direction in an inflated and expanded state, become smaller as you move to a front end side.
    [0021] In the sixth aspect, the portion that extends ahead of the rear side bag portion is formed as described above and the vertical width of the portion that extends forward becomes narrow on the front end side. Therefore, the expansion performance of the forward extending portion within the narrow gap between the seated passenger shoulder portion and the vehicle body side portion can be optimized.
    [0022] In a side airbag device for a vehicle in relation to a seventh aspect of the present invention, in the sixth aspect, the side airbag is formed in such a way that, in a state where the backrest is positioned in a defining position reference and the side airbag is inflated and expanded, an upper end of the front side bag portion is tilted forward and upward in relation to the longitudinal direction of the vehicle.
    [0023] It is noted that the "reference definition position" is the position (recline angle) of the backrest which is determined by the side impact test regulations (ECE R95) that are currently used in Japan and Europe and regulations of lateral impact test (FMVSS214) from the United States and is a position in which the ribs of the WorldSID resting against the backrest are substantially horizontal.
    [0024] In the seventh aspect, in the state in which the side airbag is inflated and expanded, the upper end of the front side bag portion is tilted forward and upwards in relation to the longitudinal direction of the vehicle. For this reason, the point of application of the lifting force that is applied to the upper arm portion of the seated passenger due to sliding contact with the vehicle's transverse direction inner side surface on the upper end side of the front side bag portion (that is, the surface that is tilted or curved in such a way that it rises as it moves towards the outside of the vehicle's cross direction), can be defined more towards the front of the vehicle. As a result, the moment in the direction of elevation that is applied to the upper arm portion can be made so that it is large and therefore the upper arm portion can be even better elevated.
    [0025] In a side airbag device for a vehicle in relation to an eighth aspect of the present invention, in any aspect from the first to the seventh aspect, in each between the front side bag portion and the bag portion on the rear side, a ventilation hole is formed to discharge the gas that has been supplied to an interior, to an outside.
    [0026] In the eighth aspect, individually defining and changing the sizes of the ventilation holes that are formed in the front side bag portion and the rear side bag portion, respectively, the internal pressures of the bag portions can be adjusted easily.
    [0027] In a side airbag device for a vehicle in relation to a ninth aspect of the present invention, in any one of the first to the eighth aspects, a gas flow path for gas supply that the inflator generates independently of the interior front side bag portion and rear side bag portion interior, respectively, is provided in the side airbag.
    [0028] In the ninth aspect, the gas that the inflator generates can be flaps woven independently of the inside of the front side bag portion and the inside of the rear side bag portion, respectively, through the gas flow path that is supplied in the side airbag. For this reason, the gas that remains within the respective bag portions can be suppressed and the inflation and expansion of each bag portion can be promoted individually. Therefore, as a result, the early stage expansion performance of the side airbag, that is, the initial restraint performance of the seated passenger, can be optimized.
    [0029] In a side airbag device for a vehicle in relation to the tenth aspect of the present invention, in any one of the first to the eighth aspects, the side airbag has a lower-side bag portion that inflates and expands below the front side bag portion and on one side of a seated passenger waist portion.
    [0030] In the tenth aspect, the seated passenger waist portion, which has a relatively high resistance, can be restricted by the lower side portion of the side airbag. Therefore, the passenger restraint performance by the side airbag can be further optimized.
    [0031] In a side airbag device for a vehicle in relation to the eleventh aspect of the present invention, in the eleventh aspect, a gas flow path for gas supply, which the inflator generates, regardless of the interior portion of front side pouch, rear side pouch portion interior and lower side pouch portion interior, respectively, is provided in the side airbag.
    [0032] In the eleventh aspect, the gas that the inflator generates can be supplied independently of the interior of the front side bag portion, the interior of the rear side bag portion and the interior of the lower side bag portion, respectively, through the gas flow path that is provided in the side airbag. For this reason, the gas that remains within the respective bag portions can be suppressed and the inflation and expansion of each bag portion can be promoted individually. Therefore, as a result, the early stage expansion performance of the side airbag, that is, the initial restraint performance of the seated passenger, can be optimized.
    [0033] In a side airbag device for a vehicle in relation to an twelfth aspect of the present invention, in any aspect within the first to the eleventh aspect, the side airbag is formed in such a way that, in an inflated and expanded, a dimension in the transverse direction of the vehicle on one side of the front portion of a portion, which is more to a lower side than the portion that extends forward, is less than that of a side of the rear portion.
    [0034] In the twelfth aspect, the side airbag is formed as described above. Additionally, as described in the first aspect mentioned above, the vehicle cross-sectional dimension of the portion extending forward of the rear side bag portion is defined to be smaller than that of the front side bag portion. In particular, the dimensions in the transverse vehicle direction (the inflated thicknesses) of the side airbag in the inflated and expanded state are defined for the "rear portion side portion more towards the bottom side than the portion that extends forward> side from a frontal portion to a lower portion than the portion that extends forward> portion that extends forward ". For this reason, the restriction that corresponds to the high / low level of load resistance on the seated passenger body can be controlled not only by defining the internal pressures of the side airbag, but also by defining the inflated thicknesses mentioned above. . As a result, the intensity of the restraining force and the speed of the restraint by means of the side airbag and the like can be controlled more appropriately. Advantageous Effects of the Invention
    [0035] As described above, in the side airbag device for a vehicle in relation to the present invention, the upper arm portion of a seated passenger that becomes interposed between the passenger's chest portion and a side airbag can be suppressed and the The shoulder portion of the seated passenger can be well restricted by the side airbag regardless of the form of a side impact. Brief Description of Drawings
    [0036] Figure 1 is a side view of a vehicle seat, in which a side airbag device for a vehicle in relation to a first embodiment of the present invention is installed and is a drawing of a state in which a side airbag, that the same side airbag device has is inflated and expanded.
    [0037] Figure 2 is an enlarged side view showing, in an enlarged manner, the side airbag of Figure 1.
    [0038] Figure 3 is an enlarged section view showing the plane that is cut along the line F3-F3 of Figure 1.
    [0039] Figure 4 is a cross-sectional view showing the plane that is cut along the line F4-F4 of Figure 1.
    [0040] Figure 5 is a vertical section view corresponding to Figure 4 and shows a state in which the side airbag is compressed between a seated passenger and a door trim due to the impact of a side impact.
    [0041] Figure 6 is a vertical section view to explain a situation in which the upper arm portion of the seated passenger is elevated due to sliding contact with a front side bag portion.
    [0042] Figure 7 is an enlarged side view in which a portion of Figure 1 is enlarged.
    [0043] Figure 8 is a side view showing an inflated and expanded state of a side airbag in a modified example of the first embodiment of the present invention.
    [0044] Figure 9 is a side view showing an inflated and expanded state of a side airbag in a second embodiment of the present invention.
    [0045] Figure 10 is a perspective view showing a state in which a side airbag is inflated and expanded in a third embodiment of the present invention.
    [0046] Figure 11 is an enlarged section view showing the plane that is cut along the line F11-F11 of Figure 10.
    [0047] Figure 12 is an enlarged section view showing the plane that is cut along the line F12-F12 of Figure 10.
    [0048] Figure 13 is a side view showing an inflated and expanded state of a side airbag in a fourth embodiment of the present invention.
    [0049] Figure 14 is a side view showing an inflated and expanded state of a side airbag in a fifth embodiment of the present invention.
    [0050] Figure 15 is an enlarged section view showing the plane that is cut along the line F15-F15 in Figure 14.
    [0051] Figure 16 is an enlarged section view showing the plane that is cut along the line F16-F16 in Figure 14. Best Ways to Execute the Invention First Mode
    [0052] A side airbag device 10 for a vehicle relating to a first embodiment of the present invention is described by means of Figure 1 to Figure 8. It is observed that the arrow FR, the arrow UP and the arrow IN which are properly shown in the respective drawings they indicate the forward direction (forward direction) of the vehicle, the upward direction and the inner side in the transverse direction of the vehicle, respectively. From that point in this document, when explanation is given using merely the longitudinal and vertical directions, they indicate the longitudinal of the longitudinal direction of the vehicle and the vertical of the vertical direction of the vehicle, unless specifically notified. Structure
    [0053] As shown in Figure 1, the side airbag device 10 for the present embodiment is installed on a side portion of the door side 14A (the side portion on a side of the side door 58 shown in Figure 4 and Figure 5 ) of a backrest 14 in a vehicle seat 12. That backrest 14 is connected recliningly to the rear end portion of a seat cushion 16 and a headrest 18 is connected to the upper end portion.
    [0054] It is observed that, in the present modality, the forward direction, upward direction and transverse direction of the vehicle seat 12 coincide with the forward direction, the upward direction and the transverse direction of the vehicle. Additionally, in Figure 1, instead of a real passenger, a World side impact doll (WorldSID) P is seated in the vehicle seat 12. The seat posture of the vehicle is determined according to the side impact test regulations (ECE R95) that are currently adopted in Japan and Europe, or the United States side impact test regulations (FMVSS214). In addition, the angle of inclination (reclining angle) of the backrest 14 in relation to the seat cushion 16 is defined at a reference definition position that corresponds to the aforementioned seated posture. From this point on in this document, for convenience of explanation, the World P side impact doll is called a "seated passenger P".
    [0055] The side airbag device 10 has a side airbag 20 and an inflator 22 that serves as a means of generating gas that generates gas inside the side airbag 20. The side airbag 20 is arranged inside the side portion on the side of door 14A in a state in which it is folded up and turned into a unit together with inflator 22 and the like. It is observed that a state in which the side airbag 20 is inflated and expanded due to the gas pressure that the inflator 22 generates (a complete expansion state) is shown in Figure 1. In addition, a backrest block 24 (see Figure 3) which is covered by a seat cover not shown, is disposed on the periphery of the side airbag device 10. As the side airbag 20 inflates and expands, the backrest block 24 and portions sewn together to this seat cover seat breaks (the state shown in Figure 3).
    [0056] As shown in Figure 2, the side airbag 20 is a so-called 2D two-chamber side airbag. This side airbag 20 is formed in the shape of a bag due to a single base cloth 26, which is formed by cutting out a nylon or polyester fabric, for example, which is folded along the fold line 28 and overlaid and wherein the peripheral edge portion thereof is sewn into a sewn portion T1. It is observed that the side airbag 20 is not limited to a structure that is sewn by the single base cloth 26 and the side airbag 20 that is bag-shaped can be a structure that is formed by overlapping a pair of base cloths and sewing the peripheral edge portions thereof. In addition, the longitudinal and vertical directions of the side airbag 20 which are described in the following explanation are the directions in the state in which the side airbag 20 is inflated and expanded and substantially coincide with the longitudinal and vertical directions of the vehicle.
    [0057] The sewn portion T1 mentioned above has a laterally extending upper portion T11, which extends from the upper portion side of the front edge portion of the side airbag 20 towards the rear end side of the side airbag 20 and it reaches a proximity of the intermediate longitudinal direction portion of the side airbag 20 and a vertically extending upper portion T12, which extends from the rear end of the upper portion that extends laterally T11 towards the lower end side of the side airbag 20 and it reaches a proximity of the central portion of the side airbag 20. The base cloth 26 is also sewn in that laterally extending upper portion T11 and the vertically extending upper portion T12. In addition, the base cloth 26 is also sewn into a sewn portion T2. This sewn portion T2 is structured by a vertically extending lower portion T21, which extends from a proximity to the lower end of the vertically extending upper portion T12 towards the lower end side of the side airbag 20 and reaches the lower portion of the side airbag 20 and a lower portion that extends laterally T22, which extends from the lower end of the lower portion that vertically extends T21 towards the rear end side of the side airbag 20 and reaches a proximity to the edge rear end of the side airbag 20. Additionally, due to the fact that the base cloth 26 is sewn to that laterally extending upper portion T11, the vertically extending upper portion T12, the lower vertically extending portion T21 and the lower portion that extends laterally T22, the side airbag 20 is divided (sectioned) into a front side bag portion 30 that it has an L shape in side view and a rear side bag portion 32 which has an inverted L shape in side view.
    [0058] The front side bag portion 30 is structured by a front side main body portion 30A, which extends in the vertical direction of the side airbag 20 from the front side side of the side airbag 20 and a portion that extends to rear 30B, which extends towards the rear side side of the side airbag 20 from the lower end side of the front side main body portion 30A. The rear side bag portion 32 is structured by a rear main body portion 32A, which extends in the vertical direction of the side airbag 20 on the rear side of the side airbag 20 and a forward extending portion 32B, which extends towards the front side side of the side airbag 20 from the upper end side of the rear main body portion 32A. The forward extending portion 32B is positioned on the upper side of the front side main body portion 30A and the rear extending portion 30B is positioned on the bottom side of the rear side main body portion 32A.
    [0059] The interior of the front side pocket portion 30 is intended to be a front side chamber 34 and the interior of the rear side pocket portion 32 is intended to be a rear side chamber 36. Namely, the interior of the side airbag 20 is divided into the front side chamber 34 and the rear side chamber 36. However, a communication hole 38 is formed due to the fact that the seam is omitted between the lower end of the vertically extending upper portion T12 and the upper end of the vertically extending lower portion T21 and the front side camera 34 and the rear side camera 36 are communicated through that communication hole 38. Additionally, the front side camera 34 is communicated with the outside of the side airbag 20 through a ventilation hole 40 which is formed on the upper end side of the front side main body portion 30A and the rear side camera 36 is communicated with the outside of the side airbag 20 through a ventilation hole 42 which is formed on the front end side of the forward extending portion 32B.
    [0060] The inflator 22, which is formed in a solid cylindrical shape and a diffuser 46, which is formed in a cylindrical tube shape, are accommodated on the lower portion side of the rear end side of the main body portion on the side rear 32A. The inflator 22 is coaxially accommodated on the inner side of the diffuser 46 and is attached to the diffuser 46 due to the fact that a portion of the diffuser 46 is caulked. As shown in Figure 1, the inflator 22 and the diffuser 46 are arranged in a state in which the axial directions of the same run together with the height direction of the backrest 14.
    [0061] A pair of upper and lower threaded pins 48 (see Figure 3) protrudes from the outer peripheral portion of the diffuser 46 towards the inner side of the vehicle's cross direction. These threaded pins 48 pass through the side airbag 20 and a side frame 50A of a backrest frame 50 and nuts 52 are screwed together with the distal end sides thereof. For this reason, the diffuser 46 is, together with the side airbag 20, attached and fixed to the side frame 50A. The lower end side of the diffuser 46 is inserted in a gap that is formed between the rear end of the lower side that extends laterally T22 and the rear end edge (the fold line 28) of the side airbag 20 and protrudes outwards for the portion extending backwards 30B (the front side chamber 34).
    [0062] As shown in Figure 2, a side collision ECU (engine control unit) 54 that is installed in the vehicle is electrically connected to the inflator 22 described above. A side collision sensor 56 that detects a side collision is electrically connected to that side collision ECU 54. The side collision ECU 54 is structured in such a way that it operates the inflator 22 at the moment when (the inevitability of) a side collision is detected based on a signal from the side collision sensor 56. It is noted that, in a case where a pre-collision sensor that predicts (predicts) a side collision is electrically connected to the side collision ECU 54, there may be a structure in which the inflator 22 is operated at the time when the side collision ECU 54 predicts a side collision based on a pre-collision sensor signal.
    [0063] When the inflator 22 is operated, the gas is jetted out from the gas jet ports which are supplied on the lower end side of the inflator 22. The gas which is jetted from the gas jet ports is supplied to the rear side chamber 36 from an upper end opening portion of diffuser 46 and an illustrated opening that is formed in the intermediate vertical direction portion of diffuser 46 (refer to arrows G1, G2 of Figure 2). A portion of the gas that is supplied to the rear side chamber 36 is supplied to the front side chamber 34 through the communication port 38. In addition, the gas that flows out from the inlet gas ports flator 22 is supplied directly to the front side chamber 34 from a lower end opening portion of diffuser 46 (refer to arrow G3 in Figure 2). For this reason, the side airbag 20 is inflated and expanded between the seated passenger P and a vehicle body side portion (here, a door finish 60 of the side door 58 shown in Figure 4 and Figure 5).
    [0064] As shown in Figure 1, in the state in which the side airbag 20 is inflated and expanded, the front side bag portion 30 and the rear side bag portion 32 are aligned in the longitudinal direction and the vertical direction. In that state, in the front side bag portion 30, the front side main body portion 30A inflates and expands on the front side of a seated passenger chest portion C and the rear edge of the upper end edge ( the laterally extending upper portion T11) of the front side main body portion 30A is arranged on the side of the seated armpit portion of the seated passenger P. Additionally, the rearward extending portion 30B of the front side bag portion 30 inflates and expands on the side of an abdomen portion B of the seated passenger P. On the other hand, on the rear side bag portion 32, the rear main body portion 32A inflates and expands on the rear side side of the seat portion. thorax C of the seated passenger P above the rear extending portion 30B and the forward extending portion 32B extends next to a shoulder portion S of the seated passenger P towards the front side of the vehicle and is arranged above thefront side main body portion 30A. Hereinafter, the side airbag 20 in the inflated and expanded state is described in detail.
    [0065] In this side airbag 20, a dimension W2 (see Figure 3) in the transverse direction of the vehicle on the front portion side (refer to the region marked by reference number E2 in Figure 2) of one portion, which is more for the underside of the portion that extends forward 32B, it is defined to be less than a dimension W3 (see Figure 3) in the transverse direction of vehicle on the rear portion side (refer to the region marked by the number of reference E3 in Figure 2) of the portion that is more towards the bottom side than the portion that extends forward 32B. Additionally, in this side airbag 20, a dimension W1 (see Figure 4) in the vehicle's forward direction of the portion extending forward 32B (refer to the region marked by reference number E1 in Figure 2) is defined to be smaller than dimension W2 in the vehicle transverse direction of the front side main body portion 30A. In particular, the dimensions in the transverse vehicle direction (the inflated thickness) of the side airbag 20 in the inflated and expanded state are defined by the relationship W3> W2> W1. A state is observed in which the side airbag 20 is compressed between the seated passenger P and the door trim 60 due to the impact of a side collision is shown in Figure 5. Additionally, in the present modality, the relationship described above of dimensions of the inflated thicknesses of the side airbag 20 is defined according to the positions of the laterally extending upper portion T11, the vertically extending upper portion T12, the vertically extending lower portion T21 and the laterally extending lower portion T22 and the the vertically extending upper portion T12 and the vertically extending lower portion T21 are defined more towards the front end side of the side airbag 20 than the central longitudinal direction portion of the side airbag 20.
    [0066] Additionally, by defining the dimension W1 in the vehicle transverse direction of the forward extending portion 32B to be smaller than the dimension W2 in the vehicle transverse direction of the front side main body portion 30A (the bag portion front side 30) as described above, as shown in Figure 6, the vehicle transverse inner side surface on the upper end side of the front side main body portion 30A is intended to be a upper arm 62 which is curved in such a way that it raises as it moves towards the outer side of the vehicle's transverse direction. It is noted that the upper arm portion lifting surface 62 may be a structure that is tilted in such a way that it raises while moving towards the outside of the vehicle's transverse direction.
    [0067] Additionally, as shown in Figure 2 and Figure 7, the laterally extending upper portion T11, which is the upper end of the front side main body portion 30A (the upper end of the front side pocket portion 30) , is formed in such a way that it is tilted forward and upward in relation to the longitudinal direction of the vehicle, when that side airbag 20 inflates and expands in a state where the backrest 14 is positioned in the reference definition position described above. It is observed that the 0 shown in Figure 2 indicates the angle of inclination of the upper portion that extends laterally T11 in relation to the longitudinal direction of the vehicle. Additionally, due to the fact that the laterally extending upper portion T11 is defined in this way, a forward-extending portion 32B is formed in such a way that the vertical direction dimension of it becomes smaller as it moves towards the side front end and inflates and expands into a substantially truncated cone shape whose geometric X axis is tilted forward and upward in relation to the longitudinal direction of the vehicle. It is observed that the illustration of the ventilation holes 40, 42 is omitted from Figure 7 in order to make the Figure easy to view.
    [0068] Additionally, as shown in Figure 3, the side airbag 20 is formed in such a way that the limit in the longitudinal direction of vehicle between the front side bag portion 30 and the rear side bag portion 32, that is, the vertically extending upper portion T12 and the vertically extending lower portion T21 (see Figure 2) which are defined between the front side main body portion 30A and the rear side main body portion 32A, be facing the central side of a longitudinal direction (the center of longitudinal direction or a proximity to the center of longitudinal direction) of the seated passenger's chest C portion P. On the vertically extending upper T12 side and the vertically extending lower portion T21, in the plane view shown in Figure 3, the inner side of the vehicle's cross-directional side of the side airbag 20 is concave towards the outer side of the vehicle's cross-direction and a portion A hollow 64 is formed. This concave portion 64 abuts on the central side in a longitudinal direction (that is, the side that protrudes outwardly towards the external side in the transverse direction of the vehicle) of the chest portion C.
    [0069] In addition, in that side airbag 20, the gas that pours out from the inflator 22 is supplied (distributed) through the diffuser 46 to the front side chamber 34 and the rear side chamber 36 and a portion of the gas supplied to the front side chamber 34 is discharged out of the vent port 40 and a portion of the gas supplied to the rear side chamber 32 is discharged out of the vent port 42. For this reason, there is a structure in which the internal pressure of the rear side chamber 36 in an inflated and expanded state is greater than the internal pressure of the front side chamber 34. Operation and Effects
    [0070] The operation and effects of this modality are described below.
    [0071] In the side airbag device 10 of the structure described above, when the side collision ECU 54 detects a side collision due to a signal from the side collision sensor 56, the inflator 22 is operated by that side collision ECU 54. Logo thereafter, the gas, which pours out of the gas spouting holes of the inflator 22, is supplied to the front side chamber 34 and the rear side chamber 36 of the side airbag 20 and the side airbag 20 inflates and expands between the seated passenger P and the door trim 58 of the side door 60.
    [0072] In the inflated and expanded state, that side airbag 20 is divided into the front side bag portion 30 and the rear side bag portion 32 which are aligned in the longitudinal direction of the vehicle and the forward portion 32B , which is provided in the upper portion of the rear side bag portion 32, extends from the side of the seated shoulder portion S of the seated passenger P towards the front side of the vehicle and is arranged above the front side bag portion 30 The dimension in the transverse direction of the vehicle (the inflated thickness) of this portion that extends forward 32B is defined to be smaller than that of the front side pocket portion 30. For this reason, the transverse direction inner side surface of vehicle on the upper end side of the front side bag portion 30 (the upper end side of the front side main body portion 30A) becomes the upper arm portion lifting surface 62 (see Figure 6) and curves in such a way that it raises as it heads towards the outside of the vehicle's cross direction.
    [0073] Therefore, due to the fact that the side airbag 20 and the seated passenger P are relatively close due to the impact of a side collision, the upper arm portion lift surface 62 and the upper arm portion A of the passenger seated P come in contact in a sliding manner and the force F (see Figure 6 and Figure 7) that raises the upper arm portion A is generated. As a result, the upper arm portion A is raised above the front side main body portion 30A and is constrained by the forward extending portion 32B which is arranged above the front side main body portion 30A. For this reason, the upper arm portion A, which becomes interposed between the seated passenger chest portion C and the side airbag 20, can be suppressed.
    [0074] Furthermore, the forward extending portion 32B described above extends from the side of the seated S portion of the seated passenger P towards the front side of the vehicle and is arranged above the front main body portion 30A (the front side pocket portion 30) as described above. So, for example, even if the shape of the side collision is an oblique side collision and the seated passenger P moves inertly towards the oblique front side of the vehicle, it can be made that the shoulder portion S of the passenger sitting P do not move away from the forward extending portion 32B. For this reason, regardless of the form of the side collision, the shoulder portion S of the seated passenger P can be well restricted by the side airbag 20 and the restriction of the shoulder portion S can continue to rise through the second half of the collision.
    [0075] Additionally, in the present embodiment, the ab portion of the dome B and the front side of the seated C portion of the seated passenger P, which have a relatively low resistance, can be restricted by the front side bag portion 30 which is inflated and expanded. In addition, the rear side of the chest portion C and the shoulder portion S, which have relatively high strength, can be constrained by the rear side bag portion 32 which is inflated and expanded. In addition, due to the fact that the upper arm portion A, which has a relatively high resistance, is elevated as described above, that upper arm portion A can be restricted by the forward-extending portion 32B of the rear side pouch portion 32. In particular, the body (the upper body) of the seated passenger P can be adequately restrained by the front side pocket portion 30 and the rear side pocket portion 32 which are defined according to the high / low resistance levels.
    [0076] Furthermore, as shown in Figure 3, the seat C portion of the seated passenger P can be restricted from the front and rear by means of the front side bag portion 30 and the rear side bag portion 32 and the lateral surface of the chest portion C can be constrained in such a way that they are covered along the curve thereof. For this reason, the positional relationship, in the longitudinal direction of the vehicle, between the chest portion C and the side airbag 20 can be stabilized.
    [0077] Furthermore, in the present modality, due to the fact that the sewn portions T12, T21 are defined at the limit in the longitudinal direction of the vehicle between the front side bag portion 30 and the rear side bag portion 32, the concave 64, which is concave towards the outside of the vehicle's cross direction, is formed on the inside of the vehicle's cross-directional side of the side airbag 20 in proximity of this limit. Consequently, due to the fact that this concave portion 64 abuts on the central side in a longitudinal direction (that is, the side that protrudes outwards towards the external side of the transverse direction of the vehicle) on the lateral surface of the chest portion C , the face for the chest portion C (ribs and the like) can be reduced.
    [0078] Additionally, in the present mode, in the state in which the side airbag 20 is inflated and expanded, the internal pressure of the rear side bag portion 32, which restricts that rear side of the chest portion C, the portion of shoulder S and the upper arm portion A, which have a relatively high resistance, is greater than the internal pressure of the front side bag portion 30 which restricts the front side of the chest portion C and the abdomen portion B which has relatively low resistance . For this reason, regions that have a relatively high resistance can be effectively restricted while the load for regions that have relatively low resistance on the seated passenger body P is reduced. As a result, the passenger restraint performance by the side airbag 20 can be optimized.
    [0079] Additionally, in the present modality, the dimensions in the transverse direction of vehicle (the inflated thickness) of the side airbag 20 in the inflated and expanded state are defined for the relation "side of the rear portion of the portion more towards the lower side than the portion forward extending 32B> front portion side towards the lower side than forward extending portion 32B> forward extending portion 32B: W3> W2> W1 ". For this reason, the restriction according to the high / low level of load resistance on the seated passenger body P can be controlled, not only by defining the internal pressures of the side airbag 20, but also by defining the inflated thicknesses described above. As a result, the intensity of the restraining force and the speed of the restraint by means of the side airbag 20 and the like can be controlled more appropriately. Additionally, it is possible to promote the lifting behavior of the upper arm portion A.
    [0080] Furthermore, in the present embodiment, the forward extending portion 32B of the rear side pocket portion 32 is formed such that the dimension in the vertical direction in the inflated and expanded state becomes smaller as it proceeds towards the front end side. Namely, due to the fact that the vertical width of the forward extending portion 32B becomes narrower on the front end side, the expanding performance of the forward extending portion 32B into the narrow gap between the shoulder portion S of the seated passenger P and the door finish 60 of the side door 58 can be optimized.
    [0081] Additionally, in the present mode, in the state where the backrest 14 is positioned in the reference definition position and the side airbag 20 is inflated and expanded, the upper end (the upper portion that extends laterally T11) of the front side pocket 30 is tilted forward and upward in relation to the longitudinal direction of the vehicle. For this reason, the point of application of the lifting force F, which is applied to the upper arm portion A of the seated passenger P due to sliding contact with the vehicle's transverse direction inner surface (the lifting portion of the upper arm 62) on the upper end side of the front side main body portion 30A, it can be defined more towards the front side of the vehicle. As a result, the moment in the elevation direction that is applied to the upper arm portion A can be made so that it is large, and therefore the upper arm portion A can be even better elevated.
    [0082] Furthermore, the forward-extending portion 32B inflates and expands into a substantially truncated cone shape that becomes narrow towards the front end side of the side airbag 20 and the X-axis (see Figure 7) of the forward extending portion 32B is tilted forward and upward in relation to the longitudinal direction of the vehicle. For this reason, the curved surface of the upper portion side on the vehicle-facing inner side surface of the forward extending portion 32B is tilted forward and upward along the X geometric axis. Therefore, when the seated passenger P moves inertly obliquely towards the front of the vehicle due to the impact of an oblique side collision, due to the fact that the shoulder portion S of seated passenger P comes in sliding contact with the aforementioned curved surface in forward extending portion 32B, shoulder portion S is elevated. For this reason, the elevation of the upper arm portion A can be promoted.
    [0083] In addition, in the present embodiment, the ventilation holes 40, 42, which are for discharging the gas that is supplied to the outside, are formed in the front side pocket portion 30 and the front portion respectively. rear side bag 32. Therefore, by defining and changing the sizes of the ventilation holes 40, 42 individually, the internal pressures of the respective bag portions 30, 32 can be easily adjusted. Supplementary explanation of the first modality
    [0084] In the first embodiment described above, there is a structure in which the communication hole 38, which communicates the front side camera 30 and the rear side camera 32 is formed between the vertically extending upper portion T12 of the sewn portion T1 and the vertically extending lower portion T21 of the sewn portion T2. However, the present invention is not limited to this modality and can be structured in such a way that the communication port 38 is omitted, such as in a side airbag 20 '(modified example) shown in Figure 8. In this modified example, the portion vertically extending upper T12 is extended to the lower side side of the side airbag 20 'and a laterally extending lower portion T13 is provided, extending from a lower end of the vertically extending upper portion T12 in the direction next to the rear end of the side airbag 20 'and reaches a proximity to the rear end edge of the side airbag 20'. That laterally extending lower portion T13 is a portion of the sewn portion T1 and, in that side airbag 20 ', the sewn portion T2 is omitted. For this reason, the work of sewing the side airbag 20 ’can be done so that it is easy.
    [0085] Additionally, the first modality described above is structured in such a way that the ventilation holes 40, 42 are formed in the side airbag 20, however, the present invention is not limited to this constitution and can be structured in such a way that a or both ventilation holes 40, 42 are omitted.
    [0086] Additionally, the first embodiment described above is structured in such a way that, in the state where the backrest 14 is positioned in the reference definition position and the side airbag 20 is inflated and expanded, the upper end of the bag portion of front side 30 (the upper portion that extends laterally T11) is tilted forward and upwards in relation to the longitudinal direction of the vehicle, however, the present invention is not limited to this constitution. For example, the present invention can be a structure in which the upper end of the front side pocket portion 30 runs together with the longitudinal direction of the vehicle (extends horizontally).
    [0087] Additionally, the first modality described above is structured in such a way that the dimension in the vertical direction in the inflated and expanded state of the portion extending forward 32B becomes smaller as it moves towards the front end side, however, the The present invention is not limited to that constitution and can be structured in such a way that the vertical direction dimension of the forward extending portion 32B is defined to be uniform.
    [0088] Furthermore, the first embodiment described above is such that, in the state in which the side airbag 20 is inflated and expanded, the internal pressure of the rear side portion 32 is greater than the internal pressure of the portion of the side airbag. front side pocket 30. However, the present invention is not limited to this constitution and can be structured in such a way that the internal pressures of the respective pocket portions 30, 32 are equal. In addition, the present invention can be structured in such a way that the internal pressure of the front side bag portion 30 is greater than the internal pressure of the rear side bag portion 32. In that case, the lifting effect of the upper arm portion A through the front side pocket portion 30 it can be stepped up.
    [0089] Additionally, the first embodiment described above is structured in such a way that, in the state in which the side airbag 20 is inflated and expanded, the limit in the longitudinal vehicle direction of the front side pocket portion 30 and the pocket portion rear side 32 (the vertically extending upper portion T12, the vertically extending lower portion T21) is facing the central side of a longitudinal direction of the seated passenger's chest C portion P. However, the present invention does not limits to that constitution and the position of the aforementioned limit can be changed accordingly.
    [0090] Additionally, although the first embodiment described above is structured in such a way that the front side pocket portion 30 has the rear extending portion 30B that extends below the rear side pocket portion 32, the present The invention is not limited to this constitution and can be structured in such a way that the rear extending portion 30B is omitted and the rear main body portion 30A is extended downwards.
    [0091] The supplementary description above is maintained, also, for the other modalities of the present invention that are described from that point in this document. It is observed that, in the modalities below, the structures and operations that are basically similar to those of the first modality described above are denoted by means of these constitution reference numbers as in the first modality described above and their description is omitted. Second Mode
    [0092] A state in which a side airbag 70, which is a structural member of a side airbag device for a vehicle in relation to a second embodiment of the present invention, is inflated and expanded is shown in a side view in Figure 9. This side airbag 70 differs from the side airbag 20 with respect to the first embodiment described above with respect to the point that a non-inflatable portion 72 is provided between the upper end of the front side main body portion 30A and the forward extending portion 32B. This non-inflatable portion 72 is formed by means of a pair of sewn together upper and lower lines 74, 76, which structures the laterally extending upper portion T11 of the sewn portion T1, which is defined in such a way that it deviates as it moves in the direction next to the front end of the side airbag 70. The inflator gas 22 is not supplied to that non-inflatable portion 72. In addition to the above, this modality is structured in a similar way to the first modality described above.
    [0093] In this embodiment, by providing the non-inflatable portion 72 in the side airbag 70 as described above, in the state in which the side airbag 70 is inflated and expanded, an elevation space for the elevation of the upper arm portion A is formed between the upper end of the front side main body portion 30A and the forward extending portion 32B. For this reason, when the upper arm portion A of the seated passenger P is raised by sliding contact with the vehicle's transverse direction inner side surface on the upper end side of the front side main body portion 30A (the surface elevation of upper arm portion 62 which is not shown in Figure 9), can be done in such a way that the forward extending portion 32B does not interfere with upper arm portion A. For this reason, the arm portion higher A can be even better elevated. Third Mode
    [0094] A state in which a side airbag 80, which is a structural member of a side airbag device for a vehicle in relation to a third embodiment of the present invention, is inflated and expanded is shown in a perspective view in Figure 10 Additionally, an enlarged side section view, showing the plane that is cut along the line F11-F11 in Figure 10, is shown in Figure 11 and an enlarged side section view, showing the plane that is cut along line F12-F12 in Figure 10, is shown in Figure 12.
    [0095] The present modality is basically structured in a similar way to the first modality described above, however, it differs from the first modality described above in relation to the point that the side airbag 80 is intended to be a so-called 3D side airbag 2- chamber. This side airbag 80 is formed in the form of a pouch by means of a pair of main base cloths (main panels) 82, 84 and a side surface base cloth (side surface panel) 86 which are sewn. The pair of main base cloths 82, 84 are both formed in elongated shapes, substantially rectangular (pentagonal shapes) and are arranged in a state facing each other. The side surface base cloth 86 is formed in the shape of a belt (a long, thin, rectangular shape) and, as shown in Figure 11 and Figure 12, one of the long side edge portions of it is sewn to the peripheral edge of a main base cloth 82 in a sewn portion T3 and the other long side edge portion is sewn to the peripheral edge portion of the other main base cloth 84 in a sewn portion T4. In addition, the short side edge portion and the other short side edge portion of this side surface base cloth 86 are sewn in places not shown. The side airbag 80, which is shaped like a flattened box, is formed for this reason.
    [0096] A 90 rope (partition wall cloth / separating stop cloth) is provided inside this side airbag 80. This 90 rope is structured by a long, thin, rectangular cloth material, as shown in Figure 11 and Figure 12, a long side edge portion thereof is sewn to a main base cloth 82 in a sewn portion T5, and the other long side edge portion is sewn to the other main base cloth 84 in a portion stitched T6.
    [0097] This rope 90 is bent in a crank shape (a substantial Z shape) as viewed in the side view and is structured by means of an upper portion that extends laterally 90A that extends from the upper portion side of the portion of front edge of the side airbag 80 towards the rear end side of the side airbag 80 and a vertically extending portion 90B extending from the rear end of the upper portion extends from the rear end of the side airbag 80 extends laterally 90A towards the lower end side of the side airbag 80 and reaches the lower portion side of the side airbag 80 and a laterally extending lower portion 90C extending from the lower end of the vertically extending portion 90B towards the rear end side of the side airbag 80 and reaches a proximity to the rear end edge of the airbag late 80. The front end portion of the laterally extending upper portion 90A is sewn to a front surface portion 86A of the side surface base cloth 86. Additionally, a placement space for the inflator 22 and the diffuser 46 is defined between the rear end portion of the laterally extending lower portion 90C and a rear surface portion 86B (see Figure 11) of the side surface base cloth 86. The side airbag 80 is divided (sectioned) into the front side pouch 30, which has an L shape in side view and the rear side pouch portion 32, which has an inverted L shape in side view, by means of this rope 90.
    [0098] A pair of upper and lower ventilation holes 92, 94 is formed on the upper portion side of the front surface portion 86A of the side surface base cloth 86. The ventilation hole 94 on the lower side communicates the interior of the portion front pocket bag 30 (the front side camera 34) and the outside of the side airbag 80. The ventilation hole 92 on the bottom side communicates the interior of the rear side bag portion 32 (the rear side camera 36) and the exterior of the side airbag 80. Additionally, the communication hole 38, which communicates the front side chamber 34 and the rear side chamber 36, is formed in the intermediate vertical direction portion of the vertically extending portion 90B of the rope 90.
    [0099] In addition to the points described above, this side airbag 80 is structured similarly to the side airbag 20 in relation to the first modality described above. Consequently, this modality also reaches operation and effects basically similar to the first modality described above. In addition, in this side airbag 80, the ventilation holes 92, 94 are formed in the front surface portion 86A (the surface that faces towards the front side of the vehicle in the inflated and expanded state) of the side surface base cloth 86. Consequently, it can be prevented or effectively suppressed that the ventilation holes 92, 94 become blocked by the seated passenger P or the door finish 60 and a stable gas leakage effect can be obtained. Furthermore, in this side airbag 80, the thickness inflated in the transverse direction of the vehicle can be set to be greater than that of the side airbag 20 and, therefore, the passenger protection performance can be optimized. Fourth Mode
    [00100] A state in which a side airbag 100, which is a structural member of a side airbag device for a vehicle in relation to a fourth embodiment of the present invention, is inflated and expanded is shown in a side view in Figure 13. It is observed that the illustration of the shoulder portion S and the upper arm portion A of the seated passenger P is omitted from Figure 13 to make the Figure easy to view. This side airbag 100 differs from the side airbag 20 in relation to the first modality described above regarding the point of having a lower side bag portion 102. Namely, in that side airbag 100, the base cloth 26 is extended downwards and that portion extended it is divided vertically by a lower partition portion T14 which is provided T1. For this reason, the lower side pocket portion 102 is formed under the front side pocket portion 30. The interior of that lower side pocket portion 102 is intended to be a waist portion chamber 104 that restricts a portion of waist L of the seated passenger P. This is a structure in which the gas that pours out of the inflator 22 is supplied to this waist portion chamber 104 through the lower end opening portion of diffuser 46 (see arrow G4 in Figure 13).
    [00101] It is observed that this modality is structured in such a way that, in the same way as the modified example (see Figure 8) of the first modality described above, the communication port 38 is omitted and the gas of the inflator 22 is supplied for the front side chamber 30 through an opening portion not shown which is formed in the intermediate vertical direction portion of the diffuser 46 (see arrow G5 of Figure 13).
    [00102] In addition to the aforementioned, this modality is structured similarly to the first modality described above. Consequently, this modality also achieves operation and effects basically similar to the first modality described above. Furthermore, the waist portion L of the seated passenger P, which has a relatively high resistance, can be restricted by the lower side bag portion 102 of the side airbag 100 and, therefore, the passenger restraint performance by means of the side airbag 100 can be further optimized. Additionally, due to the fact that the lower side bag portion 102 and the front side bag portion 30 are divided by means of the lower partition portion T14, the dimension (inflated thickness) in the vehicle's transverse direction of the bag portion lower side 102 in the inflated and expanded state can be defined according to the narrow gap between the waist portion L of the seated passenger P and the door finish 60. Fifth Mode
    [00103] A state in which a side airbag 110, which is a structural member of a side airbag device for a vehicle in relation to a fifth embodiment of the present invention, is inflated and expanded is shown in a side view in Figure 14. Additionally, an enlarged side section view, showing the plane that is cut along the line F15-F15 in Figure 14, is shown in Figure 15 and an enlarged vertical section view, showing the plane that is cut along the line F16-F16 in Figure 14, is shown in Figure 16.
    [00104] This side airbag 110 differs from the side airbag 20 in relation to the first modality described above regarding the point of having a gas flow path 112 to supply the gushed gas from the inflator 22 independently into the front side bag portion 30 (the front side chamber 34) and the rear side pocket portion interior 32 (the rear side chamber 36) respectively. Namely, a tube cloth 114 to promote expansion, which is to form the gas flow path 112, is provided inside that side airbag 110. This tube cloth 114 to promote ex-expansion has a portion that extends vertically 114A extending vertically along the rear end edge of the side airbag 110 and a forward side portion 114B extending from the intermediate vertical direction portion of the vertically extending portion 114A towards the end side front of the side airbag 110. A long side edge portion of the vertically extending portion 114A is sewn to the base cloth 26 in a sewn portion T7 that runs together with the rear edge edge of the side airbag 110 and is sewn to a outer side portion 26A of the base cloth 26 (i.e., a region of the side airbag 110 that is arranged on the outer side of the vehicle in the inflated and expanded state) in the sewn portions T8, T9, T10. Additionally, the front side portion 114B is sewn to the outer side portion 26A of the base cloth 26 in the sewn portions T9, T10. For this reason, the gas flow path 112 which is trifurcated is formed.
    [00105] An upper end opening portion 116 of that gas flow path 112 (the upper end portion of the vertically extending portion 114A) is positioned in the upper portion of the rear side chamber 36 and an end opening portion bottom 118 of the gas flow path 112 (the lower end portion of the vertically extending portion 114A) is positioned in the lower end portion of the front side chamber 34. In addition, an opening front end portion 120 of the opening path gas flow 112 (the front end portion of the front portion 114B) is connected to the communication port 38. In addition, an intermediate opening portion 122, which communicates the gas flow path 112 with the chamber rear side 36, the vertically extending portion 114A is formed in the intermediate portion between the upper end portion of the vertically extending portion 114A and the front portion 114B.
    [00106] Additionally, the inflator 22 and diffuser 46 are accommodated in a proximity of the connected portion of the portion that extends to the front side 114B and the portion that vertically extends 114A within the gas flow path 112. Additionally, the gas, which is spouted out of the upper end opening portion of the diffuser 46 at the time of operation of the inflator 22, is spouted out of the upper end opening portion 116 and the intermediate opening portion 122 of the flow path gas 112 towards the rear side chamber 36 (see arrows G6 in Figure 14). For this reason, the rear side chamber 36 inflates and expands.
    [00107] Additionally, the gas, which is spouted out of the non-illustrated opening portions that are formed in the intermediate direction portion of the diffuser 46 at the time of operation of the inflator 22, is spouted out of the opening front end portion 120 of the gas flow path 112 (the communication port 38) towards the front side chamber 34 (see arrow G7 of Figure 14 and Figure 15). In addition, gas, which is spouted out of the lower end opening portion of diffuser 46, is spouted out of the lower end opening portion 118 of the gas flow path 112 towards the front side chamber 34 (see the G8 arrow in Figure 14). For this reason, the front side chamber 34 inflates and expands.
    [00108] Thus, in this mode, the gas that the inflator 22 generates is supplied by the gas flow path 112 independently of the front side chamber 34 and the rear side chamber 36, respectively. For this reason, the gas remaining inside the respective chambers 34, 36 can be suppressed and the inflation and expansion of the front side bag portion 30 and the rear side bag portion 32 can be promoted individually. Therefore, as a result, the early stage expansion performance of the side airbag 110, that is, the initial restraint performance of the seated passenger P, can be optimized. Additionally, I share the fact that the tube cloth 114 for expansion promotion, which structures the gas flow path 112, is sewn to the outer side portion 26A of the base cloth 26 (the side opposite the seated passenger P in the inflated and expanded state), the seated passenger P is unaffected by the high temperature gas that pours out of the inflator 22, which is appropriate.
    [00109] Although the present invention has been described above illustrating several modalities, the present invention is not limited to these modalities and can be incorporated in such a way that it is altered in various ways covered by the scope that does not deviate from the essence thereof. In addition, the claims are obviously not limited to the respective modalities described above.
    权利要求:
    Claims (11)
    [0001]
    1. A side airbag device for a vehicle seat (12), comprising: an inflator (22) which is provided on a vehicle seat (12) and which, when a side collision of a vehicle is detected or predicted, is operated and generates gas; and a side airbag (20, 20 ', 70, 80, 100, 110) which is provided on a side portion of a backrest (14) of the vehicle seat (12) and which, in the assembled state of the seat (12) , it can inflate and expand between a seated passenger (P) and a side portion of the vehicle body due to the gas that the inflator (22) generates being supplied to an interior of the side airbag (20) and which, in an inflated state and expanded, it is divided into a front side pocket portion (30) and a rear side pocket portion (32) that are aligned in a longitudinal direction of the vehicle and in which a forward extending portion (32B), which is provided in an upper portion of the rear side bag portion (32), extends from one side of a seated passenger shoulder (S) portion (P) towards the front side of the vehicle and is arranged above the portion front pocket bag (30) and, due to a dimension in a transverse direction of vehicle of the portion extending forward (32B) being defined for to be smaller than that of the front side pocket portion (30), an inner side surface of transverse direction of vehicle on an upper end side of the front side pocket portion (30) is angled or curved such that get up while going to an external side in the transverse direction of the vehicle, characterized by the fact that the portion that extends forward (32B) is formed so that a dimension, in a vertical direction in an expanded and inflated state, becomes smaller while going towards a front side end.
    [0002]
    2. Side airbag device for a vehicle seat (12) according to claim 1, characterized by the fact that a front side chamber (34) front side bag portion (30) has an extending portion backward (30B) which extends downwards from a rear side chamber (36) into the rear side pocket portion (32), and inflates and expands on one side of an abdomen portion (B) and a front side of the thorax portion (C) of the seated passenger (P) and the rear side chamber (36) inflates and expands on one side of a rear portion of the thorax portion (C) and the shoulder portion (S) of the passenger sitting (P).
    [0003]
    3. Side airbag device for a vehicle seat (12) according to claim 2, characterized in that the side airbag is formed in such a way that a limit, in the longitudinal direction of the vehicle, of the bag portion of front side (30) and the rear side bag portion (32) in an inflated and expanded state is facing the central side in a longitudinal direction of a seated passenger chest portion (C) (P).
    [0004]
    4. Side airbag device for vehicle seat (12) according to claim 2 or 3, characterized in that the side airbag is structured in such a way that, in an inflated and expanded state, an internal pressure of the portion rear side bag (32) is greater than the internal pressure of the front side bag portion (30).
    [0005]
    5. Side airbag device for vehicle seat (12) according to any one of claims 1 to 4, characterized in that the non-inflatable portion (72) is provided in the side airbag (20) between an upper end of the front portion of pouch (30) and forward portion (32B).
    [0006]
    6. Side airbag device for vehicle seat (12), according to claim 1, characterized by the fact that the side airbag is formed in such a way that, in a state where the backrest (14) is positioned in a reference definition position and the side airbag (20) is inflated and expanded, an upper end of the front side bag portion (30) is tilted forward and upward in relation to the longitudinal direction of the vehicle.
    [0007]
    7. Side airbag device for vehicle seat (12) according to any one of claims 1 to 6, characterized by the fact that a ventilation hole (40, 42) for discharging gas that has been supplied to an interior, it is formed in each one between the front side bag portion (30) and the rear side bag portion (32).
    [0008]
    8. Side airbag device for vehicle seat (12) according to any one of claims 1 to 7, characterized by the fact that a gas flow path (112) for supplying gas, which the inflator (22) It generates, independently for the interior of the front side bag portion (34) and the interior of the rear side bag portion (36) respectively, is provided in the side airbag.
    [0009]
    9. Side airbag device for vehicle seat (12) according to any one of claims 1 to 7, characterized in that the side airbag has a lower side portion of bag (102) which inflates and expands below of the front side bag portion (30) and on one side of a waist portion (W) of the seated passenger (L).
    [0010]
    10. Side airbag device for vehicle seat (12), according to claim 9, characterized by the fact that a gas flow path (112) for gas supply, which the inflator (22) generates, independently for the interior of the front side bag portion (34), the interior of the rear side bag portion (36) and the interior of the lower side bag portion (104) respectively, is provided in the side airbag.
    [0011]
    11. Side airbag device for vehicle seat (12) according to any one of claims 1 to 10, characterized in that the side airbag is formed in such a way that, in an inflated and expanded state, a dimension in transverse vehicle direction of a front portion side of a portion, which is more towards a lower side than the forward extending portion (32B), is less than that of a rear portion side.
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    同族专利:
    公开号 | 公开日
    WO2013157082A1|2013-10-24|
    CN103502062B|2016-02-10|
    EP2839996B1|2016-09-28|
    EP2839996A1|2015-02-25|
    US9039037B2|2015-05-26|
    RU2584325C1|2016-05-20|
    JP5423903B1|2014-02-19|
    EP2839996A4|2015-04-01|
    BR112014015889A8|2017-07-04|
    US20150035262A1|2015-02-05|
    JPWO2013157082A1|2015-12-21|
    CN103502062A|2014-01-08|
    BR112014015889A2|2017-06-13|
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    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-12-17| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-08-18| B09A| Decision: intention to grant|
    2020-12-01| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 17/04/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/JP2012/060363|WO2013157082A1|2012-04-17|2012-04-17|Vehicle side airbag device|
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