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    • 专利摘要:
    VEHICLE SIDE AIR BAG DEVICE. Side air bag device for a vehicle that is configured to prevent the presence of an occupant's arm seated between the side air bag and the chest and to improve a side air bag restraining performance. The side air bag (20) of a vehicle side air bag device (10) for a vehicle is configured such that a front bag portion (36) and a rear bag portion (38) are partitioned by a longitudinal partition portion (32). A forwardly extending portion (38A) which is provided to the top of the rear bag portion (38) and which restrains an occupant's shoulder (S) is partitioned from the front bag portion (36) by a partition portion. upper (34) extending diagonally upwards toward a front side of an abutment (14) from an upper end of the longitudinal partition portion (32). When an inflator (22) is activated, the posterior bag portion (38) is expanded and deployed at an early stage, and gas in the posterior bag portion (38) is supplied to the front bag portion (...) .
    公开号:BR112015001133B1
    申请号:R112015001133-0
    申请日:2013-06-13
    公开日:2021-05-04
    发明作者:Yusuke Fujiwara
    申请人:Toyota Jidosha Kabushiki Kaisha；
    IPC主号:
    专利说明:

    FIELD OF TECHNIQUE
    [001] The present invention relates to a vehicle side air bag device. TECHNICAL BACKGROUND
    [002] In a vehicle side air bag device described in Patent Document 1, a side air bag includes a rear side tube bag portion configured to extend in a vertical direction on a rear side of the vehicle at relation to a vehicle-width outer end of the chest of a seated occupant at the time when a side air pocket is expanded and unfolded. Additionally, the side air bag includes a front side tube bag portion configured to be positioned on a front side of the vehicle with respect to the rear side tube bag portion and on a front side of the vehicle with respect to the outer end of vehicle width from the seated occupant's chest and to extend in the vertical direction at the time when the side air bag is expanded and unfolded. An upper portion of the rear side tube bag portion is positioned on a lateral side of a seated occupant's shoulder so as to serve as a shoulder restraint portion that restrains the shoulder and an upper edge of the front side tube bag is positioned in a lower position to one side of the seated occupant on the front side of the vehicle relative to the shoulder restraint portion and serves as an arm support portion in which an arm of the seated occupant is positioned.
    [003] That is, in the vehicle side air bag device, the seated occupant's shoulder having a relatively high resistance is restricted by the shoulder restraint portion, while the seated occupant's arm is positioned in the arm support portion , so as to prevent the arm from being positioned between an air pocket and the chest of the seated occupant which has a relatively low resistance.
    [004] Examples of prior art document relating to the present invention include Patent Documents 2 to 4. LIST OF QUOTES PATENT DOCUMENTS
    [005] Patent Document 1: Patent Application Publication No. JP 2010-132072 (JP 2010-132072 A)
    [006] Patent Document 2: Patent Application Publication No. JP 2011-240807 (JP 2011-240807 A)
    [007] Patent Document 3: Patent Application Publication No. JP 2012-025182 (JP 2012-025182 A)
    [008] Patent Document 4: International Publication No. WO 2004/065179 SUMMARY OF THE INVENTION PROBLEM TO BE SOLVED BY THE INVENTION
    [009] In the side air bag device described above, the side air bag is large so that the side air bag can restrict from the shoulder to the lower back of the seated occupant. Because of this, it takes time before the side air bag is fully expanded and unfolded. However, the portion of the rear side tube bag that accommodates an inflator within it is expanded and unfolded at an early stage so that satisfactory initial restraint performance of the side air bag relative to the seated occupant is possible. However, since the shoulder restraint portion of the posterior side tube bag portion is configured to restrict only a posterior portion of the seated occupant's shoulder, the seated occupant's shoulder may exit the shoulder restraint portion unexpectedly. Because of this, there is room for improvement from a standpoint of improving a side air bag's restraining performance relative to the seated occupant.
    [0010] The present invention is carried out in view of the above fact and intends to obtain a vehicle side air bag device that is capable of preventing an upper part of the arm from being positioned between a side air bag and the thorax of a seated occupant and which is able to improve a lateral air pocket restraint performance in relation to the seated occupant. MEANS TO SOLVE THE PROBLEM
    [0011] A vehicle side air bag device, in accordance with a first aspect of the present invention, includes: an inflator provided in a vehicle seat and configured to be activated to generate gas when a side impact of a vehicle is detected or predicted; and a side air bag provided in a side portion of a vehicle seat backrest and configured to be expanded and deployed between a seated occupant and a side portion of the vehicle body when gas generated from the inflator is supplied into the even, the side air bag including: a front bag portion configured to restrict the front parts of the seated occupant's chest and abdomen; a posterior pouch portion configured to constrain posterior portions of the seated occupant's chest and abdomen, the posterior pouch portion being configured such that a forward-extending portion configured to constrain a seated occupant's shoulder is provided in a upper part of it and the inflator provided inside it.; a longitudinal partition portion configured to partition the front pocket portion from the rear pocket portion, the longitudinal partition portion having a communicating opening configured to communicate an inside of the front pocket portion with an inside of the portion. of posterior pouch; and an upper partition portion extending diagonally upwards toward a front side of the abutment of an upper end of the longitudinal partition portion in an expanded and unfolded state, the upper partition portion being configured to partition the portion extending forwardly from the front bag portion and to go upwards towards the front side relative to that of the front-rear direction of the backrest which is perpendicular to a height direction of the backrest in a seat side view.
    [0012] Note that, in the first aspect, a positional relationship between the seated occupant and the side air bag is defined based on a positional relationship between a World Side Impact Test Dummy (SID World) sitting in a vehicle seat and the side air bag.
    [0013] In the first aspect, when a vehicle side collision is detected or predicted, the inflator is activated to generate gas so that the gas is supplied to the side air bag. Thereby, the side air pocket is expanded and unfolded between the seated occupant and the side body portion of the vehicle. In the side air pocket, the front pocket portion configured to constrain the front chest and abdomen of the seated occupant and the rear pocket portion configured to constrain the rear chest and abdomen portion are partitioned by the longitudinal partition portion. The inflator is supplied in the rear bag portion and the gas generated from the inflator is supplied to the front bag portion through the communication opening provided in the longitudinal partition portion. This makes it possible to expand and unfold the posterior pouch portion initially at a higher pressure than the front pouch portion, so that such posterior parts of the chest and abdomen have relatively higher resistances than the front parts of the chest and of the abdomen may be restricted by the posterior pouch portion at an early stage.
    [0014] Additionally, the forwardly extending portion configured to restrain the seated occupant's shoulder is provided on top of the posterior pouch portion. The forward-extending portion is expanded and unfolded at an early stage so that the seated occupant's shoulder can be restricted at an early stage. Furthermore, the forwardly extending portion is partitioned from the front pocket portion by the upper partition portion which extends diagonally upwards towards the front side of the back from the upper end of the longitudinal partition portion and is expanded and unfolded towards the upper side of the front pouch portion. That is, the upper partition portion which extends upwards with respect to a front-to-rear direction of the backrest is defined and thereby the upper part of the rear pocket portion extends towards the upper side of the pocket portion front so as to restrict the seated occupant's shoulder. Once the upper partition portion is defined as such, it is possible to suppress an increase in a posterior pocket portion capacity and make the upper portion of the posterior pocket portion, i.e., the forward-extending portion is turned successfully to the shoulder of the seated occupant. As a result, the posterior parts of the chest and abdomen and shoulder can be effectively restrained, which is able to improve a lateral air bag restraining performance in relation to the seated occupant.
    [0015] Additionally, an inner side surface of the front bag portion in the width direction of the vehicle in an expanded and unfolded state is curved so that its upper side relative to its central part in the vertical direction goes upwards in the direction of an outer side in the vehicle width direction (directed in the outer side direction in the vehicle width direction as it goes up). Hereby, the side air bag and the seated occupant come relatively close to each other due to an impact of a side collision, so that the thus curved surface makes sliding contact with the seated occupant's arm, which thereby makes a force to push the arm up. As a result, the arm is pushed up to the top of the front pocket portion and constrained by the forward-extending portion. By means of this, it is possible to prevent the arm from being positioned between the seated person's chest and the lateral air pocket, which in this way makes it possible to reduce a load on the chest.
    [0016] A vehicle side air bag device, according to a second aspect of the present invention, is configured so that: in the first aspect, when an expanded, deployed state of the side air bag is viewed from a wide direction of the vehicle, the upper partition portion is positioned between a center of the seated occupant's shoulder and a longitudinally central part of an arm.
    [0017] In the second aspect, since the upper partition portion of the side air bladder is defined as described above, an upward thrust force from the front bladder portion to the arm can be successfully applied to the part. longitudinally central of the arm, that is, close to a centroid of the arm. By means of this, the arm can be effectively pushed upwards.
    [0018] A vehicle side air bag device, according to a third aspect of the present invention, is configured so that: in the first or second aspect, when the unfolded, expanded state of the side air bag is viewed from the direction of vehicle width, the longitudinal partition portion is provided to extend toward the center of the shoulder from a position that overlaps a seated occupant's hip point to a lower side of an armpit.
    [0019] In the third aspect, since the longitudinal partition portion that partitions the front pouch portion and the posterior pouch portion is defined as described above, lateral surfaces of the seated occupant's chest and abdomen may be restricted by the portion of front pouch and the back pouch portion so that the side surfaces are covered with them along and their front side and back side curves. Through this, a positional relationship, in the front-posterior direction of the vehicle, of the chest and abdomen with the lateral air bag can be stabilized.
    [0020] A vehicle side air bag device, according to a fourth aspect of the present invention, is configured so that: in any one of the first to third aspects, the longitudinal partition portion and the upper partition portion are consisting of a strip sewn to a side air bag base fabric or a seam formed by sewing the base fabric.
    [0021] In the fourth aspect, the longitudinal parting portion and the upper parting portion are constituted by the strip or the seam. Consequently, in a state where the side air bag is expanded and unfolded, an inner side surface of the side air bag in the vehicle width direction is recessed outward in the vehicle width direction, close to the longitudinal partition portion and to the upper partition portion. An intermediate part, in the front-posterior direction of the lateral surface of the chest (i.e. a more projecting part towards the outside in the steering vehicle; the central part in the front-posterior direction or close to the central part in the front-posterior direction ) is fitted into a recessed portion formed close to the longitudinal partition portion. This makes it possible to reduce a load to the chest (ribs and the like). Additionally, the arm pushed up by sliding contact with the front pocket portion is fitted to a recessed portion formed near the upper partition portion. By means of this, it is possible to successfully restrain the arm in a position where the arm is pushed upwards.
    [0022] A vehicle side air bladder device, in accordance with a fifth aspect of the present invention, is configured so that: in the first or second aspect, a straightening member covering the inflator is provided in the rear bladder portion , the rectifying member including a body portion configured to guide the gas generated from the inflator in a vertical direction and a branching portion of the body portion so that its tip side is inserted into the communicating opening, wherein the branch portion configured to guide gas to the front pocket portion along the upper partition portion of a tip opening thereof open to the front pocket portion.
    [0023] In the fifth aspect, the body portion of the straightening member provided in the posterior pocket portion of the lateral air pocket guides, in the vertical direction, the gas generated from the inflator. This makes it possible to successfully deliver gas to an upper part of the posterior pouch portion and a lower part thereof. In addition, a tip side of the branching branch portion of the body portion is inserted into the communicating opening provided in the longitudinal partition portion, so that gas is guided to the front pocket portion from the tip opening of the portion. of branching along the upper partition portion. This makes it possible to expand and unfold the top of the front pouch portion at an early stage, so that the arm can be pushed up through the top of the front pouch portion at an early stage.
    [0024] A vehicle side air pocket, according to a sixth aspect of the present invention, is configured so that: in the fifth aspect, the branch portion is formed in a tubular shape of which a diameter in the direction of the side of the vehicle. tip.
    [0025] In the sixth aspect, since the branch portion is formed in such a way, it is possible to increase a flow velocity of the gas ejected from the tip opening of the branch portion towards the top of the front pocket portion. As a result, an upward push arm effect through the top of the front pocket portion can be promoted.
    [0026] A vehicle side air bag device, in accordance with a seventh aspect of the present invention, is configured so that: in the fifth or sixth aspect, a fan hole is formed in a front end portion of the portion of front pocket in the unfolded state expanded so that the fan hole is positioned on a side lower than the branch portion.
    [0027] In the seventh aspect, the gas guided from the tip opening of the branch portion of the grinding member to the top of the front bag portion is discharged outside the side air bag through the fan hole formed at the front end of the front pouch portion, on a side lower than the tip opening. By means of this, it is possible to prevent the internal pressure of the frontal pocket portion from increasing too much, thus making it possible to reduce a load to the front parts of the chest and abdomen which have relatively low resistances. In addition, the tip opening of the branch portion and the fan hole are moved to the upper side and to the lower side so that it is possible to prevent the gas supplied to the front bag portion of the tip opening from being discharged to out directly (linearly) from the fan hole. As a result, it is possible to ensure an initial unfolding performance of the upper part of the front pocket portion. Additionally, it is possible to adjust the internal pressure of the rear bag portion by discharging, out of the side air bag from the fan port, the gas that has flowed into the front bag portion from the rear bag portion through the rectification member.
    [0028] A vehicle side air bag device, in accordance with an eighth aspect of the present invention, is configured so that: in any one of the first through seventh aspects, an angle of inclination of the upper partition portion with respect to a front-to-back direction of the backrest is set within a range of 30 to 60 degrees.
    [0029] A vehicle side air bag device, in accordance with a ninth aspect of the present invention, is configured so that: in any one of the first through eighth aspects, when the deployed, expanded state of the side air bag is seen from the vehicle's width direction, at least one swath of a virtual circle having a diameter of 80° around the center of the seated occupant's shoulder is constrained by the portion that extends forward.
    [0030] A vehicle side air bag device, in accordance with a tenth aspect of the present invention, is configured so that: in any one of the first through ninth aspects, the backrest height direction is a direction connecting a center, in the front-to-rear direction, from an upper end of a backrest structure to an axis center of a reclining pole in a seat side view.
    [0031] A vehicle side air bag device, in accordance with an eleventh aspect of the present invention, is configured so that: in any one of the first through tenth aspects, the front bag portion is established to have a vehicle width dimension greater than that of a portion that extends forward in the expanded unfolded state and an inner side surface, in the vehicle width direction, of the front bag portion on its upper end side serves as a surface of tilted or curved upward arm thrust so as to go upwards towards an outer side in the vehicle's width direction. ADVANTAGEOUS EFFECTS OF THE INVENTION
    [0032] As described above, in the vehicle side air bag device according to the present invention, it is possible to prevent an upper part of the arm from being positioned between a side air bag and the chest of a seated occupant and to improve a side air bag restraining performance in relation to the seated occupant. BRIEF DESCRIPTION OF THE DRAWINGS
    [0033] [Figure 1] Figure 1 is a side view of a vehicle seat provided with a vehicle side air bag device, according to a first embodiment of the present invention, and illustrates an expanded, unfolded state of a bag of side air.
    [0034] [Figure 2] Figure 2 is an enlarged side view illustrating the side air pocket in an enlarged manner.
    [0035] [Figure 3] Figure 3 is a reduced sectional view illustrating a cut surface taken along line F3-F3 of Figure 2 in a reduced manner.
    [0036] [Figure 4] Figure 4 is a reduced sectional view illustrating a cut surface taken along the line F4-F4 of Figure 2 in a reduced manner.
    [0037] [Figure 5] Figure 5 is a side view illustrating a state where a side air bladder of a vehicle side air bladder device, according to a second embodiment of the present invention, is expanded and unfolded.
    [0038] [Figure 6] Figure 6 is a side view illustrating a state where a side air bag of a vehicle side air bag device, according to a third embodiment of the present invention, is expanded and unfolded. WAYS TO PERFORM THE INVENTION FIRST MODE
    [0039] The following describes a vehicle side air bag device 10, according to a first embodiment of the present invention, with reference to Figures 1 to 4. Note that an arrow FR, an arrow up and an arrow out , which are appropriately shown in each figure, indicate a front vehicle direction (a direction of travel), an up vehicle direction, and an outside side in a vehicle width direction, respectively. Hereinafter, in a case where a description is made by using merely front and rear directions and up and down directions, they indicate front and rear of a front-to-rear direction of the vehicle and up and down of a vertical direction of the vehicle, respectively, unless otherwise specified. SETTINGS
    [0040] As illustrated in Figure 1, the vehicle side air bag device 10, in accordance with the present embodiment, is provided in a side portion of port side 14A (a side portion closer to a side port (not shown)) of a backrest 14 on a vehicle seat 12. The backrest 14 is connected to a rear end of a bench seat 16 in an inclined manner and a headrest 18 is connected to an upper end of the backrest 14.
    [0041] Note that, in the present mode, a front-rear direction, a right-left direction (width direction) and a vertical direction of the vehicle seat 12 coincide with the front-rear direction, the right direction -left (width direction) and the vertical direction of the vehicle. Additionally, in Figure 1, a World Side Impact Test Dummy (Worldwide SID) P sits in vehicle seat 12 instead of the actual occupant. A seated posture of the World Side Impact Test Dummy P serves a side impact test procedure performed on a vehicle in which the vehicle side air bag device 10 is provided. Additionally, an angle of inclination (a reclining angle) of the backrest 14 relative to the bench seat 16 is set as a reference setting position corresponding to the sitting posture. By virtue of the description, the world side impact test dummy P is hereinafter referred to as the "seated occupant P".
    [0042] The side air bag device 10 primarily includes a side air bag 20 and an inflator (gas generator) 22 configured to generate gas in the side air bag 20. The side air bag 20 is folded and unitized with the inflator 22, etc. and is disposed (housed) on the door side side portion 14A. Upon receiving a gas pressure generated from the inflator 22, the side air pocket 20 is expanded and deployed between the seated occupant P and a side door (a side portion of the vehicle) (see status in Figure 1). At the time when the side air pocket 20 is expanded and unfolded, a back pad 24 (see Figure 3) and a seat film (not shown) disposed on the door side side portion 14A are ruptured by receiving pressure from inflation of the side air bag 20. Note that the front, rear, up and down directions of the side air bag 20 to be described in the following description indicate directions in a state where the side air bag 20 is expanded and unfolded, the unless otherwise specified and generally coincide with front, posterior, upper and lower directions of the backrest 14.
    [0043] As illustrated in Figures 1 to 4, the side air bag 20 is a so-called twin chamber side air bag and is formed into a bag shape by sewing a base fabric 28 formed by cutting a material from nylon or polyester fabric, for example. The base fabric 28 is folded along a fold line 29 shown in Figures 2 and 3 to overlap one side portion 28A onto the other side portion 28B via fold line 29 and outer peripheries thereof are sewn into a seam line (a seam portion) T1 (not shown in Figure 1). Side air pocket 20 can be formed by stitching the outer peripheries of two overlapping base fabrics together.
    [0044] In an expanded, unfolded state, the side air pocket 20 is arranged so that a side portion 28A of the base fabric 28 is facing an inner side (a seated occupant side P) in the vehicle width direction. and the other side portion 28B of the base fabric 28 faces an outer side (a side door side) in the width direction of the vehicle. Additionally, the side air pocket 20 is formed generally in an elongated oblong shape along a back height direction in a side view of the expanded unfolded state as illustrated in Figures 1 and 2 and has a size that can constrain a shoulder S , chest C, abdomen B and lower back L of seated occupant P.
    [0045] The inside of the side air pocket 20 is partitioned by a strip (a partition fabric) 30 formed into a long belt shape by a fabric material similar to the base fabric 28. The strip 30 is configured of so that a long side edge portion is sewn onto a side portion 28A of the base fabric 28 at a seam (a seam portion) T2 (see Figures 3 and 4; not shown in Figures 1 and 2) and the other long side edge portion is sewn into the other side portion 28B of base fabric 28 at a seam line (a seam portion) T3 (see Figures 3 and 4; not shown in Figures 1 and 2). The strip 30 is constituted by a longitudinal partition portion 32 which extends in the abutment height direction from a vertically intermediate portion of the side air pocket 20 to a lower portion thereof and an upper partition portion (a partition portion of slope) 34 extending diagonally upwards toward a front side of the back 14 from an upper end of the longitudinal partition portion 32. The side air pocket 20 is partitioned to a front pocket portion 36 and a posterior pouch portion 38.
    [0046] An inside of the front pouch portion 36 is a front chamber 40 and an inside of the rear pouch portion 38 is a rear chamber 42. The front chamber 40 and the rear chamber 42 communicate with each other by means of one or more (in this document, paired upper and lower) communicating openings 46, 48 formed in the longitudinal partition portion 32 (see Figures 2 and 3; not shown in Figure 1).
    [0047] As illustrated in Figure 2, when the unfolded, expanded state of the side air pocket 20 is viewed from the vehicle's width direction, the longitudinal partition portion 32 is defined to extend from a position that overlaps a point of seated occupant's hip HP P to be close to an underside of an armpit U toward a shoulder center S. Note that a shoulder center position S is a position of a center axis of a screw 50 provided in the shoulder S of world side impact test dummy P sitting in vehicle seat 12.
    [0048] The longitudinal partition portion 32 is provided to face the intermediate parts, in the front-posterior direction of the chest C, the abdomen B and the lumbar L of the seated occupant P in the expanded unfolded state of the lateral air bag 20. Hereby, the front parts of the chest C, abdomen B and lumbar L of the seated occupant P are restricted by the frontal pocket portion 36 and the front parts of the chest C, abdomen B and lumbar L are restricted by the portion of rear pocket 38. In the vicinity of the longitudinal partition portion 32, an inner side surface of the side air pocket 20 in the vehicle-width direction is recessed outwardly in the vehicle-width direction to form a recessed portion 49, as illustrated in Figure 3. The recessed portion 49 extends in the abutment height direction along the longitudinal partition portion 32. The recessed portion 49 is facing the intermediate part, in the front-posterior direction of the chest C (i.e. a part which protrudes further outwards in the width direction of the vehicle).
    [0049] However, the partition portion 34 is slanted relative to the front-to-rear direction of the backrest 14, that is, a direction (a direction along an alternative long and short dashed line X in Figure 2) perpendicular to the direction of height of the back 14 (one direction along an alternative long and short dashed line Y in Figure 2) in a seat side view so as to go up towards the front side of the back 14. Note that the height direction of the seat 14 is a direction connecting an axis center of a reclining pole 52 and a center, in the front-to-rear direction of an upper end of a seat frame 15 in a seat side view. Additionally, in the present embodiment, an angle of inclination θ of the upper partition portion 34 relative to the front-to-rear direction of the seat 14 is set within 40 to 50 degrees, for example. The tilt angle θ is preferably an angle at which the upper partition portion 34 is generally perpendicular to a longitudinal direction of arm A, in a state where arm A of the seated occupant P or of the world side impact test dummy P is established as an angle defined by the side impact test procedure. More specifically, the tilt angle θ is preferably within 30 to 60 degrees and more specifically within 40 to 50 degrees.
    [0050] When the expanded unfolded state of the side air bag 20 is viewed from the vehicle's width direction, the upper partition portion 34 is established to be positioned close to a center between a shoulder center S and the seated occupant P and a longitudinally central part of arm A (a position of a centroid AG of arm A or a position close to the centroid AG). When the upper partition portion 34 is established as such, a forwardly extending portion 38A partitioned from a front pocket portion 36 is formed in an upper portion of the rear pocket portion 38. The forwardly extending portion 38A is expanded and unfolded towards the upper side of the front bag portion 36 so as to constrain the shoulder S of the seated occupant P. Note that, in the present embodiment, at least one swath of a virtual circle VC (see Figure 2) with a diameter of 80Φ to 100Φ around the center axis of the bolt 50 provided at shoulder S is constrained by the forwardly extending portion 38A.
    [0051] Additionally, in the vicinity of the upper partition portion 34, the inner side surface of the side air pocket 20 in the vehicle width direction is recessed outward in the vehicle width direction to form a recessed portion 51, as illustrated in Figure 4. The recessed portion 51 is provided to extend diagonally upwards towards the front side of the seat 14 along the upper partition portion 34. Additionally, an inner side surface of the front pocket portion 36, in the vehicle width direction in an expanded and unfolded state, it is curved so that its upper side in relation to its central part in the vertical direction goes up towards the outside in the vehicle width direction (directed in the direction from the outside in the vehicle width direction as it goes up).
    [0052] Note that, in the present embodiment, the side air bag 20 is formed by sewing the base fabric 28 and the strip 30. However, the present embodiment is not limited to this and a method of manufacturing the air bag 20 side is not limited in particular. For example, the side air pocket can be formed by a double weaving method (a method called OPW) using an automatic loom.
    [0053] Additionally, in the present embodiment, the longitudinal partition portion 32 and the upper partition portion 34 are both constituted by the strip 30. However, the present embodiment is not limited thereto and the longitudinal partition portion 32 can be constructed by strip 30 and the upper parting portion may be constituted by a seam (a seam portion). Additionally, in the present embodiment, the longitudinal partition portion 32 and the top partition portion 34 are established to be linearly unfolded in a side view as illustrated in Figures 1 and 2. However, the present embodiment is not limited thereto and the longitudinal partition portion 32 and the upper partition portion 34 can be unfolded into an arc shape in a side view.
    [0054] However, the inflator 22 is a so-called cylinder inflator and is formed in a columnar shape. The inflator 22 is disposed within the rear bag portion 38 in a state where its geometric axis direction is along the height direction of the seat 14. In a state where the side air bag 20 is expanded and unfolded, the inflator. dor 22 is provided to be positioned close to a central portion, in the vertical direction, of the posterior end of the posterior pouch portion 38.
    [0055] A pair of top and bottom studs 54 (see Figure 3) protrude from an outer peripheral portion of the inflator 22 towards the inner side in the vehicle width direction. Studs 54 penetrate through a side portion 28A of base fabric 28 and a side frame 15A of seat frame 15 and nuts 56 are threadedly engaged with their tip sides. Hereby, the inflator 22 and the side air bag 20 are secured and secured to the side frame 15A (called the side surface grip). Note that studs that protrude towards a rear side of the vehicle from the outer peripheral part of the inflator 22 can penetrate through a bracket (a reaction plate) or similar that has a flat L-shaped section and is secured to the side frame 15A of the front side of the vehicle so as to be threadedly engaged with nuts (called a rear surface grip).
    [0056] A gas ejection portion 22A (see Figure 2) is provided on an upper end side of the inflator 22 (see Figure 2). A plurality of gas ports aligned in a circumferential direction of the inflator 22 is formed in the gas ejection portion 22A. When inflator 22 is activated, gas is ejected radially from the plurality of gas ports.
    [0057] A side impact ECU 58 supplied in the vehicle is electrically connected to the inflator 22, as illustrated in Figure 1. A side impact sensor 60 configured to detect a side collision is electrically connected to the side impact ECU 58 The Side Collision ECU 58 is configured to activate the inflator 22 at the moment when the Side Collision ECU 58 detects a side collision (inevitably the same) based on a signal from the Side Collision Sensor 60. a case where a pre-accident sensor that predicts (predicts) a side collision is electrically connected to the side collision ECU 58, the side collision ECU 58 can be configured to activate the inflator 22 at the moment when the side collision ECU 58 predicts a side collision based on a pre-crash sensor signal.
    [0058] The inflator 22 is covered with an inner tube (a grinding fabric) 62. The inner tube 62 is formed by sewing, in a tubular shape, a fabric material similar to the base fabric 28 of the side air bag 20 and the inflator 22 is inserted into the inner tube 62. The pair of upper and lower studs 54 of the inflator 22 penetrates through the inner tube 62 and part of the inner tube 62 sandwiched between the inflator 22 and the side portion 28A of the base fabric 28. Inner tube 62 has a function (a function to rectify gas) to guide gas ejected from the inflator 22 to the top and bottom sides through top and bottom openings (see arrows G1, G2 in Figure 2). Gases G1, G2 ejected from the inner tube 62 are supplied to the rear bag portion 38 and then supplied to the front bag portion 36 through the communicating openings 46, 48 of the longitudinal partition portion 32. Consequently, an internal pressure of the rear pouch portion 38 is higher than an internal pressure of front pouch portion 36. That is, in the present embodiment, inflator 22 is provided in rear pouch portion 38 and communicating openings 46, 48 are formed in the longitudinal partition portion 32, which thereby constitutes an internal pressure adjusting means configured to increase the internal pressure of the rear pocket portion 38 to be higher than the internal pressure of the front pocket portion 36.
    [0059] Additionally, the side air bag 20, according to the present embodiment, is configured so that, in the expanded unfolded state, one dimension, in the vehicle width direction, from a front side (the front bag portion 36) on an underside with respect to the forwardly extending portion 38A is less than one dimension, in the width direction of the vehicle, from a rear side (a main body portion of the rear bag portion 38) on one side lower than the forwardly extending portion 38A. Additionally, the side air pocket 20 is configured so that a dimension, in the vehicle width direction, of the forwardly extending portion 38A in the expanded unfolded state is less than one dimension, in the vehicle width direction, of the front bag portion 36. When the dimension, in the vehicle width direction, of the forwardly extending portion 38A is established as less than the dimension, in the vehicle width direction, of the front bag portion 36 as such, an inner side surface, in the width direction of the vehicle, of an upper side of the front bag portion 36 serves as an upward arm thrust surface 68 curved so that it goes up towards the outer side in the width direction. of vehicle (directed outward in the vehicle width direction as it goes up), as illustrated in Figure 4. Note that the up arm push surface 68 can be configured to be tilted up in the right direction. tion from the outside in the vehicle width direction. OPERATIONS AND EFFECTS
    [0060] The operations and effects of the first mode will be described below.
    [0061] In the side air bag device 10 configured as described above, when the side collision ECU 58 detects a side collision based on a signal from the side collision sensor 60, the inflator 22 is activated by the side collision ECU 58 Then, the gas ejected from the inflator 22 is supplied to the side air bag 20 and the side air bag 20 is expanded and deployed between the seated occupant P and a side door door trim. In the side air pouch 20, the front pouch portion 36 that restricts the front chest C, abdomen B and lumbar L of the seated occupant P and the posterior pouch portion 38 that restricts the rear chest C, of the abdomen B and lumbar L are partitioned by the longitudinal partition portion 32. The inflator 22 is provided in the posterior bag portion 38 and the gas generated from the inflator 22 is supplied to the front bag portion 36 through the communicating openings 46, 48 provided in the longitudinal partition portion 32 (see arrows G3, G4 in Figure 2). This makes it possible to expand and unfold the posterior pouch portion 38 initially at a higher pressure than the front pouch portion 36, which thus makes it possible to restrict, at an early stage, those posterior parts of the chest C and abdomen B which have relatively greater resistance than the front parts of the chest C and the abdomen B by the posterior pouch portion 38.
    [0062] Additionally, the forwardly extending portion 38A configured to restrain the shoulder S of the seated occupant P is provided on top of the rear pouch portion 38. The forwardly extending portion 38A is expanded and unfolded in one stage so that the shoulder S of seated occupant P can be restricted at an early stage. In addition, the forwardly extending portion 38A is partitioned from the front pocket portion 36 by the upper partition portion 34 which extends diagonally upward toward the front side of the back 14 from the upper end of the portion. of longitudinal partition 32 and is expanded and unfolded towards the upper side of the front pocket portion 36. That is, the upper partition portion 34 which extends upwardly relative to the front-to-rear direction of the seat 14 is established and, by middle of which, the upper portion (the forwardly extending portion 38A) of the rear bag portion 38 extends toward the upper side of the front bag portion 36 so as to constrain the shoulder S of the seated occupant P. The angle inclination θ of the upper partition portion 34 relative to the front-to-rear direction of the seat 14 is set within 40 to 50 degrees, for example. Hereby, it is possible to suppress an increase in a capacity of the posterior pouch portion 38 and make the upper part (the forwardly extending portion 38A) of the posterior pouch portion 38 to be successfully turned towards the shoulder S of the seated occupant P. As a result, the posterior parts of the chest C and abdomen B and shoulder S can be effectively restrained, which is able to improve a restraining performance of the lateral air bag 20 relative to the seated occupant P .
    [0063] Additionally, as illustrated in Figure 4, the inner side surface, in the vehicle width direction, of the expanded and unfolded front bag portion 36 is curved so that its upper side relative to its central part in the upward direction -downward go up towards the outside in the vehicle width direction (see the up arm push surface 68 illustrated in Figure 4). Thereby, the side air bag 20 and the seated occupant P come relatively close to each other due to an impact from a side collision, so that the thrust surface of the upward arm 68 makes sliding contact with the arm A of the seated occupant P, who thus causes a force F to push arm A upwards. As a result, arm A is pushed up to the top of the front pocket portion 36 and constrained by the forwardly extending portion 38A. By means of this, it is possible to restrict the arm A from being positioned between the chest C of the seated person P and the lateral air bag 20, which in this way makes it possible to reduce a load for the chest C.
    [0064] Furthermore, in the present embodiment, when the expanded, unfolded state of the side air bag 20 is viewed from the vehicle's width direction, the upper partition portion 34 is positioned near the center between the center of the shoulder S of the seated occupant P and the longitudinally central part of arm A (near the centroid AG of arm A). Consequently, compared to a case where the upper partition portion 34 is established close to the centroid AG of the arm A, an upward thrust force F from the front pocket portion 36 to the arm A can be successfully applied to approximate the centroid AG of the A-arm. By means of this, the A-arm can be effectively pushed upwards.
    [0065] That is, if the upper partition portion 34 is established along a line X in Figure 2, for example, the upper partition portion 34 passes close to the centroid AG of arm A. As illustrated in Figure 4, in proximate the upper partition portion 34, the inner side surface of the side air pocket 20 in the vehicle width direction is recessed outwardly in the vehicle width direction to form the recessed portion (valley) 51. Consequently, the recessed portion 51 abuts a proximal vicinal area of the centroid AG of arm A. The recessed portion 51 is formed at the upper end (an end point on the upper side) of the upward arm thrust surface 68, so a distance and a time of sliding contact between the area near the centroid AG of arm A and the thrust surface of the upward arm 68 is shortened, which makes it difficult to apply the upward thrust force F sufficiently to bring the centroid AG together. of arm A. In contrast, in the present embodiment, when arm A begins to make sliding contact with the thrust surface of the upward arm 68, the centroid AG is sufficiently distanced downwardly from the recessed portion 51 (the portion of upper partition 34), the upward thrust force F of the upward arm thrust surface 68 can be successfully applied to the area near the centroid AG of the arm A. As a result, the arm A may be pushed upward by effectively.
    [0066] In addition, the forward-extending portion 38A extends from a lateral side of the shoulder S of the seated occupant P towards the front side of the vehicle, so as to be positioned on the upper side of the front bag portion 36, as described above. Consequently, even in a case where a side collision is a so-called oblique side collision and the seated occupant P moves obliquely towards the front side of the vehicle in an inertial manner, for example, it is possible to prevent the occupant's shoulder S from sitting P exit the forward-extending portion 38A. Consequently, regardless of the type of side collision, the shoulder S of the seated occupant P can be successfully restricted by the side air bag 20 and the shoulder S can be continued to be restricted until a second half of the collision. Note that in the vehicle side air bag device described in the Background Art, in a case where the seated occupant P moves obliquely towards the front side of the vehicle in an inertial manner at the time of an oblique side collision, the the seated occupant's shoulder may come out of the portion that restricts the shoulder. However, the present modality can prevent this problem;
    [0067] Additionally, in the present embodiment, in a case where the side air bag 20 is cut along a line connecting the center (the screw 50) of the shoulder S of the seated occupant P to the centroid AG of the arm A in Figure 2, the recessed portion 51 is formed between the shoulder center S and the centroid AG of the arm A. The recessed portion 51 extends diagonally upwards towards the front side of the seat 14 along the upper partition portion 34. Accordingly, an outwardly curved surface in the vehicle width direction as it goes diagonally downwards towards the front side of the seat 14 is formed on the front end side of the forwardly extending portion 38A. Hereby, at the moment when the side air bag 20 expanded and unfolded and the seated occupant P approach each other relatively due to an impact of a side collision, the shoulder S of the seated occupant P on the outer side in the width direction of the vehicle moves towards the upper partition portion 34 (the front side of the vehicle) along the curved surface formed on the front end side of the forwardly extending portion 38A, in addition to the upward thrust operation on the arm A as described above. As a result, the upper body of the seated occupant P is rotated around a generally vertical geometric axis in a direction where the shoulder S on the outer side in the vehicle width direction moves towards the front side of the vehicle so that the The seated occupant's back P are facing the side air bag 20. Hereby, the back side having a relatively high load resistance can be effectively restricted by the side air bag 20. chest C is displaced (rotated) in a direction away from the side air pocket 20, it is possible to additionally reduce a load to the chest C. In addition, the shoulder S on the outer side in the vehicle width direction moves towards the side front of the vehicle so as to be fitted to the recessed portion 51 so that the shoulder S is difficult to get out of the forward extending portion 38A, which is a portion that restricts the shoulder, which thereby results in the shoulder S can continue the be restricted even at the moment of an oblique collision.
    [0068] Additionally, in the present embodiment, when the expanded, unfolded state of the side air pocket 20 is viewed from the vehicle's width direction, the longitudinal partition portion 32 is established to extend from a position that overlaps the hip point HP of seated occupant P to underside of armpit U towards center of shoulder S. Consequently, lateral surfaces of chest C and abdomen B of seated occupant P may be restricted by front bag portion 36 and portion of back pocket 38 so that the side surfaces are covered between them along their curves from the front side of the back side. By means of this, a positional relationship, in the front-posterior direction of the vehicle, of the chest C and the abdomen B with the lateral air bag 20 can be stabilized.
    [0069] Additionally, in the present embodiment, the longitudinal partition portion 32 and the upper partition portion 34 are constituted by the strip 30 sewn into the base fabric 28 of the side air bag 20. Hereby, in a state where the bag of the side air bag 20 is expanded and unfolded, the inner side surface of the side air bag 20 in the vehicle width direction is recessed outward in the vehicle width direction, close to the longitudinal partition portion 32 and the upper partition portion 34. An intermediate part, in the front-posterior direction of the lateral surface of the chest C (i.e. a more projecting part towards the outside in the steering vehicle; the central part in the front-posterior direction or close to the central part in the direction front-posterior) is fitted to the recessed portion 49 formed close to the longitudinal partition portion 32. By means of this, it is possible to reduce a load to the chest C (rib, or similar). Additionally, the arm A pushed up by sliding contact with the front pocket portion 36 is fitted to the recessed portion 51 formed close to the upper partition portion 34. Hereby, it is possible to successfully restrain the arm A in a position where the arm is pushed up.
    [0070] Additionally, in the present embodiment, the longitudinal partition portion 32 and the upper partition portion 34 are constituted by the strip 30. Consequently, expansion thicknesses (dimensions in the width direction of the vehicle in the expanded unfolded state) of the bag portion The front 36 and the rear pocket portion 38 can be enlarged only by a width dimension of the strip 30. This makes it possible to successfully secure impact-absorbing courses of the front pocket portion 36 and the rear pocket portion 38.
    [0071] Note that, in the first embodiment, in a case where the upper parting portion 34 is constituted by a seam (a seam portion), it is possible to achieve a large curve of an upward arm thrust surface 68 , which in this way makes it possible to increase the upward thrust force F applied to the arm A. The same applies to a case where the upper partition portion 34 is constituted by a strip having a thinner width than the strip 30.
    [0072] Additionally, in the first embodiment, the pair of upper and lower communication openings 46, 48 are formed in the longitudinal partition portion 32 and no communication opening is formed in the upper partition portion 34. However, the present invention is not limited thereto and one or more communicating openings may be formed in each of the longitudinal partition portion 32 and the upper partition portion 34.
    [0073] Next, another embodiment of the present invention will be described. Note that a setting/operation basically similar to a setting/operation of the first modality has the same numerical reference as the setting/operation of the first modality and its description is omitted. SECOND MODE
    [0074] Figure 5 is a side view illustrating an expanded, deployed state of a side air bladder 72, which is a constituent member of a vehicle side air bladder device 70, in accordance with a second embodiment of the present invention . In the side air pocket 72, the strip 30, according to the first embodiment, is omitted and a front pocket portion 36 and a rear pocket portion 38 are partitioned by seam lines (seam portions) T4, T5 , T6 constituting a longitudinal parting portion 32 and a seam (a seam portion) T7 constituting an upper parting portion 34. Seam lines T4, T5, T6 are established to be aligned in the vertical direction near a central part of the side air bag 72 in the vertical direction. Upper seam T4 is formed in a round shape and central seam T5 and lower seam T6 are formed in an elongated elliptical shape in a seat 14 height direction (not shown in Figure 5). Additionally, the junction line T7 constituting the upper partition portion 34 extends diagonally upwards towards a front side of the seat 14 from the junction line T4, i.e. an upper end of the upper partition portion. 34.
    [0075] Communication openings 74, 76, 78 are formed, respectively, between the T4 tie trunk and the T5 tie trunk, between the T5 tie trunk and the T6 tie trunk, and between the T6 tie trunk and a The lower end of the side air pocket 72 and a front chamber 40 communicates with a rear chamber 42 via these communicating openings.
    [0076] The side air bag device 70 has the same configuration as the side air bag device 10, according to a first embodiment, except for the above configuration. Consequently, basically the same effect as the first modality can be obtained. Furthermore, the longitudinal partition portion 32 and the upper partition portion 34 are constituted by the junction lines T4, T5, T6, T7, it is possible to manufacture the side air bag 72 at a low cost. THIRD MODE
    [0077] Figure 6 is a side view illustrating an expanded, deployed state of a side air bladder 82, which is a constituent member of a vehicle side air bladder device 80, in accordance with a third embodiment of the present invention . The side air bag 82 has basically the same configuration as the side air bag 20, according to the first embodiment, but the communicating opening 48, according to the first embodiment, is omitted. Additionally, in the side air pocket 82, a seam portion T1 is omitted (split) in part from a bottom end side of a front end of a front pocket portion 36 so that a fan hole 83 is formed. .
    [0078] Additionally, in the side air bag device 80, a configuration of an inner tube (a grinding fabric: a grinding member) 84 is different from that of the inner tube 62, according to the first embodiment. The inner tube 84 is comprised of a body portion 84A sewn into a tubular shape that is increased in diameter toward an upper end side and a branch portion 84B sewn into a tubular shape and branched from the body portion. 84A. The body portion 84A is established so that a groove area of an upper opening 88 formed at an upper end is greater than a groove area of a lower opening 86 formed at a lower end. An inflator 22 is covered with the body portion 84A.
    [0079] The branch portion 84B is formed so that its diameter is decreased towards a tip side. The tip side of the branch portion 84B is inserted into a communicating opening 46 of a longitudinal partition portion 32 and a tip opening 90 is opened towards an upper part of a front chamber 40. Thereby, a side from the inside of the body portion 84A communicates with the front chamber 40 through an inside of the branch portion 84B. The nose opening 90 is positioned on an upper side of the fan hole 83. Note that, in the present embodiment, the inner tube 84 including the body portion 84A and the branch portion 84B is formed by sewing a fabric material. . However, the present embodiment is not limited thereto and the method of sewing the inner tube 84 may be modified accordingly.
    [0080] In a state where the side air pocket 82 is expanded and unfolded, the branch portion 84B extends diagonally upwards towards the front side of the vehicle from the body portion 84A and a tip of the body portion. branch 84B is positioned proximate to an underside of upper partition portion 34. A direction in which branch portion 84B extends is established generally parallel to a direction in which upper partition portion 34 extends.
    [0081] Additionally, in this embodiment, the inflator 22 is covered with a cylindrical diffuser 92. The diffuser 92 includes an upper end opening 94 configured to guide ejected gas from a gas ejection portion 22A of the inflator 22 to the upper side, a lower end opening 96 configured to guide gas towards the underside and a front end opening 98 configured to guide gas towards the front side. This modality has a similar setting to the first modality except for the setting above.
    [0082] In the thus configured side air bladder device 80, gas ejected from the lower end opening 96 of the diffuser 92 is guided to the underside by the lower opening 86 of the body portion 84A (see arrow G2 in Figure 6 ). Hereby, an underside side of the rear pocket portion 38 is promoted to be expanded and unfolded. Additionally, the gas ejected from the upper end 94 of the diffuser 92 is guided to the upper side and the front side of the vehicle (one side of the forwardly extending portion 38A) by the upper opening 88 of the body portion 84A (see arrow G1 in Figure 6). Hereby, that upper side of the rear pocket portion 38 which includes the forwardly extending portion 38A is promoted to be expanded and unfolded. Furthermore, the groove area of the upper opening 88 is set larger than the groove area of the lower opening 86 so that more gas can be flown towards the upper opening 88 of the body portion 84A. This makes it possible to supply, at an early stage, gas to the upper side of the posterior pouch portion 38 which includes the forwardly extending portion 38A, so that the shoulder S of the seated occupant P can be restricted at an early stage.
    [0083] Additionally, in this mode, the tip opening 90 of the branch portion 84B branched from the body portion 84A is opening towards the front chamber 40 and gas ejected from the tip opening 90 of the diffuser 92 towards the front side of the vehicle is supplied to an upper part of the front chamber 40 through the branch portion 84B (see arrow G5 in Figure 6). As such, the exclusive branch portion 84B for supplying gas to the upper part of the front chamber 40 is provided, so that the upper part of the front chamber 40 can be promoted to be expanded and unfolded. As a result, the arm A can be pushed up through the top of the front pocket portion 36 at an early stage.
    [0084] Furthermore, in the present embodiment, the diameter of the branch portion 84B is decreased towards the tip side, it is possible to increase a flow velocity of the gas G5 ejected from the tip opening 90 of the branch portion 84B. As a result, an effect of pushing the arm A upwards through the top of the front pocket portion 36 can be promoted.
    [0085] Additionally, in the present embodiment the G% gas guided from the tip opening 90 of the branch portion 84B of the inner tube 84 to the top of the front pocket portion 36 is discharged out of the side air pocket 82 through the orifice of fan 83 formed at the front end of the front bag portion 36 on a lower side of the tip opening 90. Hereby, it is possible to prevent the internal pressure of the front bag portion 36 from increasing too much, which thereby makes it possible to reduce a load of the front parts of the chest C and abdomen B which have relatively low resistances. In addition, the tip opening 90 of the branch portion 84B and the fan hole 83 are moved to the upper side and the lower side, so that it is possible to prevent the gas G5 supplied to the front pocket portion 36 of the tip opening 90 is discharged out directly (linearly) from the fan hole 83 and to ensure an initial deployment performance of the upper portion of the front pocket portion 36. Additionally, it is also possible to adjust the internal pressure of the front pocket portion 36. rear bladder 38 discharging, out of the side air bladder 82 from the fan port 83, the fluid gas into the front bladder portion 36 from the rear bladder portion 38 through the inner tube 84. ADDITIONAL DESCRIPTION OF MODALITIES
    [0086] In the third embodiment, the side air pocket 82 is configured to be partitioned by the strip 30 into the front pocket portion 36 and the rear pocket portion 38. However, the present embodiment is not limited to that and the pocket of side air 82 can be configured to be partitioned by a seam for the front pocket portion 36 and the rear pocket portion 38.
    [0087] Additionally, in the third embodiment, the branch portion 84B is formed into a tubular shape of which the diameter is decreased towards the tip side. However, the present embodiment is not limited thereto and all parts of the branch portion 84B can be formed to have the same diameter.
    [0088] Additionally, in each of the first through third modes, shoulder S, chest C, abdomen B, and lumbar L of seated occupant P are restricted by the lateral air pocket 20, 72, 82. However, each of the modes is not limited to this and the side air bag is configured to be able to restrict at least the shoulder, chest and abdomen of the seated occupant.
    [0089] Additionally, in the side air pockets 20, 72 of the first and second embodiments, a fan hole 83 may be formed in a lower portion of a front edge portion, similarly to the side air pocket 82 of the third embodiment.
    [0090] Please note that the entire disclosure of Patent Application No. JP 2012-160476 is incorporated herein by reference. Additionally, all documents, patent applications and technical standards described in this specification are hereby incorporated into this document by way of reference to the same extent as in cases where each document, patent application or technical standard is specifically and individually described as incorporated by way of reference.
    [0091] In addition, the present invention can be carried out with several modifications without deviating from an essence of the present invention. Additionally, it goes without saying that the scope of the present invention is not limited to each of the above embodiments.
    权利要求:
    Claims (11)
    [0001]
    1. Vehicle side air bag device (10, 70, 80) characterized in that it comprises: an inflator (22) provided on a vehicle seat (12) and configured to be activated in order to generate gas when a side collision of a vehicle is detected or predicted; and a side air bag (20, 72, 82) provided in a side portion of a backrest (14) of the vehicle seat (12) and configured to be extended and unfolded between a seated occupant and a side portion of the vehicle body. when gas generated from the inflator (22) is supplied therein, the side air pocket (20, 72, 82) includes: a front pocket portion (36) configured to restrict front chest portions and of the adme of the setted occupant; a posterior pouch portion (38) configured to constrain posterior portions of the seated occupant's chest and abdomen, the posterior pouch portion (38) being configured such that a forwardly extending portion (38A) configured to constrain a shoulder of the seated occupant is provided in an upper part of the same and the heel is provided in the lower part of the occupant; a longitudinal partition portion (32) configured to partition the front pocket portion (36) from the rear pocket portion (38), the longitudinal partition portion (32) having a communication opening configured to communicate an inside. the front pocket portion (36) with an inside of the rear pocket portion; and an upper partition portion (34) extending diagonally upwards toward a front side of the abutment (14) from an upper end of the longitudinal partition portion (32) in an expanded and unfolded state, the upper partition portion (34) being configured to partition the forwardly extending portion (38A) from the front pocket portion (36) and to go up towards the front side relative to the front-rear direction of the backrest (14) which is perpendicular to a height direction of the backrest (14) in a seat side view.
    [0002]
    2. Vehicle side air bag device (10, 70, 80) according to claim 1, characterized in that: when an expanded unfolded state of the side air bag (20, 72, 82) is seen from a vehicle width direction, the upper partition portion (34) is positioned between a center of the seated occupant's shoulder and a longitudinally center portion of an arm.
    [0003]
    3. Vehicle side air bag device (10, 70, 80) according to claim 1 or 2, characterized in that: when the unfolded state of the side air bag (20, 72, 82) is expanded is seen from the width direction of the vehicle, the longitudinal partition portion (32) is provided to extend towards the center of the shoulder from a position that overlaps a seated occupant's hip point to a lower side of an armpit.
    [0004]
    4. Vehicle side air bag device (10, 70, 80) according to any one of claims 1 to 3, characterized in that: a longitudinal partition portion (32) and the upper partition portion ( 34) are comprised of a strip (30) sewn into a base fabric of the side air pocket (20, 72, 82) or a seam formed by sewing the base fabric.
    [0005]
    5. Vehicle side air bag device (10, 70, 80) according to any one of claims 1 to 4, characterized in that: a straightening member (84) covering the inflator (22) is provided in the rear pocket portion (38), the straightening member (84) including a body portion (84A) configured to guide the gas generated from the inflator (22) to a vertical direction and a branch portion (84B) branched from the body portion (84A) so that its tip side is inserted into the communicating opening, the branch portion (84B) being configured to guide gas to the front pocket portion (36) along the portion. of upper partition (34) from an opening therein open to the front pocket portion (36).
    [0006]
    6. Vehicle side air bag device (10, 70, 80) according to claim 5, characterized in that: the branch portion (84B) is formed in a tubular shape of which a diameter is decreased towards the edge side.
    [0007]
    7. Vehicle side air bag device (10, 70, 80) according to claim 5 or 6, characterized in that: a fan hole (83) is formed in a front end portion of the portion of front pouch (36) in the expanded, unfolded state so that the fan hole (83) is positioned on an underside of the branch portion (84B).
    [0008]
    8. Vehicle side air bag device (10, 70, 80) according to any one of claims 1 to 7, characterized in that: an angle of inclination of the upper partition portion (34) with respect to a front-to-back direction of the back (14) is set within a range of 30 to 60 degrees.
    [0009]
    9. Vehicle side air bag device (10, 70, 80) according to any one of claims 1 to 8, characterized in that: when the unfolded state of the side air bag (20, 72) is expanded , 82) is seen from the vehicle's width direction, at least one band of a virtual circle having a diameter of 80Φ around the center of the seated occupant's shoulder is constrained by the forward-extending portion (38A).
    [0010]
    10. Vehicle side air bag device (10, 70, 80) according to any one of claims 1 to 9, characterized in that: the height direction of the backrest (14) is a direction that co- nects a center, in the front-to-rear direction, from a top end of a backrest structure (14) to an axis center of a reclining pole in a seat side view.
    [0011]
    11. Vehicle side air bag device (10, 70, 80) according to any one of claims 1 to 10, characterized in that: the front bag portion (36) is established to have a dimension of vehicle width greater than that of the forwardly extending portion (38A) in the expanded unfolded state, and an inner side surface, in the vehicle width direction, of the front bag portion (36) at its end side top serves as an upward sloping or curved arm thrust surface so as to go up towards an outer side in the width direction of the vehicle.
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    同族专利:
    公开号 | 公开日
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    JPWO2014013822A1|2016-06-30|
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    WO2014013822A1|2014-01-23|
    US20150197212A1|2015-07-16|
    CA2879525A1|2014-01-23|
    BR112015001133A2|2017-06-27|
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-01-14| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-03-09| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-05-04| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 13/06/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2012160476|2012-07-19|
    JP2012-160476|2012-07-19|
    PCT/JP2013/066396|WO2014013822A1|2012-07-19|2013-06-13|Side airbag device for vehicle|
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