• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Articulation (10) of a vehicle seat for angular adjustment of a backrest relative to a seat, the hinge comprising two flanges (7,8), the first flange comprising a base toothing on a border directed inwards , with N teeth spaced at an angular pitch of 360 / N degrees, a series of first grains (21) cooperating with a first control cam (31) biased by first springs (41), a series of second grains (22) ) cooperating with a second control cam (32) biased by second springs (42), a control hub (1) for moving the control cams to an unlocking position against the first and second springs, wherein the teeth (27) of the series of first grains are angularly offset by at most one half-tooth relative to the teeth (28) of the series of second grains, so as to obtain a locking pitch at least twice as fine.
    公开号:FR3025758A1
    申请号:FR1458572
    申请日:2014-09-12
    公开日:2016-03-18
    发明作者:Didier Gallienne；Damien Grimaud
    申请人:Faurecia Sieges dAutomobile SA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to the articulations and 5 angular adjustment devices for vehicle seat, and particularly relates to the seat back joints with discontinuous adjustment. More specifically, the invention relates to a vehicle seat joint an automobile allowing an angular adjustment of a seat back relative to a seat seat around a main axis of articulation, comprising first and second hinge flanges adapted to be integrally connected respectively to said seat back and seat, the first flange comprising a base toothing on a circular rim directed radially inwards, with N teeth regularly spaced a basic angular pitch of 360 / N degrees. Furthermore, such a joint further comprises toothed locking grooves 20 movable and guided relative to the second flange in a radial displacement, between an engagement position where the teeth of the grains are engaged in the toothing of the first flange. opposite, and a release position in which there is no mutual engagement of the teeth.
    [0002] A control cam associated with a control plate makes it possible to radially move the locking grains between the two aforementioned positions. A hinge is thus obtained which can be locked in one of the possible locking positions, the different possible positions being separated by an angular gap (also called "locking pitch") of 360 / N degrees. In the known art, the toothing of the first flange comprises a number of teeth between 100 and 200, which corresponds to a locking pitch of between 3.6 degrees and 1.8 degrees.
    [0003] Such a seat joint is known, for example from document FR2977204. It is desirable to be able to decrease the locking pitch to provide an increased number of possible adjustment positions for the comfort of the occupants of the seat; in particular, it is desired to obtain a locking pitch of less than 1.5 degrees, or even preferably less than 1 degree. The teeth of the teeth are usually formed with a generally triangular profile. The solution of increasing the number of teeth encounters a basic problem of geometry because, as the number of teeth is increased, the depth of teeth decreases and consequently the depth of engagement decreases. However, the safety requirements that require the position to be maintained in the event of an impact on the vehicle involve a relatively large engagement between the teeth of the displaceable grains and the basic toothing of the flange, in order to guarantee a high degree of robustness in case of choc. It therefore appeared the need to propose a solution that allows to obtain a thinner locking step while continuing to meet the safety requirements imposed on the articulation between the backrest and seat.
    [0004] To this end, according to the invention, a seat joint of the kind in question comprises: a set of P subsets of toothed grains, of which at least: a first subset of one or more co-operating first grains; with a first control cam recalled by one or more first springs, - a second subassembly of one or more second grains cooperating with a second control cam recalled by one or more second springs, the first and second grains being displaceable at least 3025758 3 radially, guided by guides formed in the second flange and comprising teeth to engage with the base teeth, the first and second grains being movable between an engagement position where the teeth 5 grains are engaged in the basic toothing vis-à-vis, and a release position in which there is no mutual engagement of the teeth, - a control hub adapted to move the first and second cams of control to an unlocking position, while the first and second springs independently bias the first and second cams to a locking position, wherein the teeth of the first grain (s) are angularly offset about the axis relative to the teeth of the second (s) grain (s), a difference substantially equal to (K + 1 / P) 360 / N degrees, K being whole. By means of which only one of the grain subassemblies is in full engagement position while the grains of the other subassemblies are in the partially engaged position or tooth on tooth, and thus a split lock step can be obtained. by P relative to the pitch of the toothing base, in this case less than 1.5 degrees or even preferably less than 1 degree.
    [0005] Thus one can improve the comfort of the seat user who has a step of adjustment and finer adjustment. It is understood that if the grain or grains of a first subassembly is in the engagement position, and that it is desired to modify the position of the backrest by an angle corresponding to less than one tooth of the basic toothing. then it is the grain or grains of a second subassembly which will come into full engagement position, while the grains of the first subassembly will be partially engaged or tooth on tooth.
    [0006] In various embodiments of the invention, one and / or other of the following arrangements may also be used. The control hub can be returned to a rest position by one or more third (s) spring (s). Thus, the control hub, and optionally the link bar and the user control handle, are, in the absence of user bias, recalled to a rest position regardless of the action of the first 10 and second springs; thus the return of the first and second cams can be decoupled from the return means of the control hub, which guarantees the good re-locking of the grains. According to an advantageous option, the first, second and third springs may be identical, arranged in the same plane at the same axial position, and distributed around the axis every 60 °. This optimizes the axial compactness of the joint, because the three return functions are housed in a reduced axial space.
    [0007] We can choose P = 2, the first series of grains can then advantageously comprise three grains shifted at 120 ° from each other; so that the locking points are equitably distributed around the base teeth and that the robustness of the lock is adequate to meet the safety requirements. In other words, this amounts to splitting the series of locking grains with a half-tooth offset to double the number of possible positions. Thus one can improve the comfort of the seat user who has a step of adjustment and finer adjustment. Similarly, the second series of grains may advantageously comprise three grains shifted at 120 ° to each other.
    [0008] The first and second grains may advantageously be arranged in the same plane at the same axial position, arranged alternately all around the basic toothing; an axial compactness equivalent to a single-grain system is thus obtained; The first grains are similar to the second grains, except for the toothing of the first grains which is offset by half a tooth with respect to the toothing of the second grains; thus the offset is obtained by a change in the toothing of the grains, while the second flange can form six similar guides regularly arranged at 60 ° each. It is preferable to choose N as a multiple of 6. By means of this, the basic teeth are provided with a repeating pattern every 60 ° which simplifies the design of the second flange in which the six guides are identical and regularly arranged at 60 °. ° each one. According to an advantageous option, each of the first and second control cams may comprise an annular main body and a plurality of radial thrust lugs, preferably three in number, the radial thrust lugs of the first and second cams being arranged in the same plane to the same axial position as the locking grains, while the annular main body of the first cam is axially offset from the annular main body of the second cam. Thus the above-mentioned annular bodies of the cams are arranged one after the other in the axial direction, while all the thrust tabs are at the same axial position; This makes it possible to cleverly house the two control cams, which remain independent of one another, in a small space. According to an advantageous option, there are two third diametrically opposed springs, two second springs 3025758 6 arranged at 120 degrees from each other, two third springs arranged at 120 degrees from each other, the six springs being disposed in six similar cuvettes formed in the second flange and evenly spaced about the axis. By means of which the method for obtaining the second flange in which six similar cuvettes are formed for their purpose is simplified. According to another embodiment, independently one can choose P = 5 under-housing springs 10 sets each comprising a toothed grain, the teeth of two consecutive toothed grains being separated by an angular distance of 72 degrees and N not being multiple of 5 So that a setting step can be obtained five times smaller than the pitch of the basic toothing.
    [0009] Advantageously, the control cams are metal wedges guided in a tangential motion and driven by helical compression springs; which forms a compact solution for the control cams; Advantageously, the metal wedges are arranged in the same plane at the same axial position, the helical compression springs being also preferably arranged in the same plane. With this, the bulk of such a joint can be similar to the joints of the prior art. Advantageously, the control hub may be a plastic control plate comprising lugs protruding axially and configured to push the corners when the control plate rotates to an unlocking position; thus the control hub is made of one piece five plastic molded. According to another embodiment, it is possible to choose P = 3 subassemblies each comprising two toothed grains. In this way, the locking pitch 3025758 7 can be divided threefold with respect to the pitch of the basic toothing, while having two fully engaged toothed grains. According to an advantageous option, each of the first and second control cams comprises a return pin on which is carried the free end of the corresponding return spring and at least one drive notch provided to cooperate with at least one hub finger control. Thus, the control and recall functions use integrated forms in each of the control cams. According to an advantageous option, the control cams are metallic and are controlled by a plastic control plate, said control plate making it possible to pull the locking grains inwards by acting on axially projecting pins of each of the locking grains. . This optimizes the means for controlling the locking toothed grains. It is possible to provide an angular clearance (0) between the rest position (a0) of the control hub and the driving position of each of the control cams (a1, a2), this angular clearance being greater than 3 °. The rest position is well angularly separated from the driving positions of the first and second cams.
    [0010] Finally, the invention also relates to a vehicle seat comprising a seat, a backrest and at least one hinge as described above. The present invention will be better understood and other features and advantages will become apparent upon reading the following detailed description comprising embodiments given by way of illustration with reference to the appended figures, presented by way of non-limiting examples. which may be used to complete the understanding of the present invention and the presentation of its realization and, where appropriate, contribute to its definition, in which: FIG. 1 is a general view of a vehicle seat equipped with FIG. 2 is a front view of an angular adjustment device used in the seat of FIG. 1 comprising first and second articulations; FIG. 3 represents in perspective an exploded view; of the first articulation of the device of Figure 2, according to a first embodiment, - Figure 4 is an axial sectional view of the articulat According to the first embodiment, FIG. 5 shows in more detail and in perspective the two sets of locking grains, the two control cams, the different return springs, according to the first embodiment, the FIG. 6 shows in perspective a control plate associated with the control hub, according to the first embodiment; FIG. 7 is a partial cross sectional view of the hinge in the locked position, along the section line VII-VII; FIG. 8 is a partial cross-sectional view of the hinge in the locked position by the second series of locking grains, along the section line VIII-VIII of FIG. 4; FIG. 9 is a partial cross-sectional view of the hinge in the locked position by the second set of locking grains, along the section line IX-IX of FIG. 4; FIG. 9A is a more detailed view of a by In Fig. 9, again according to the first embodiment, Fig. 10 is a partial cross-sectional view of the hinge in the unlocked position, still according to the first embodiment, and Fig. 11 shows the second hinge flange still according to the first embodiment, - Figures 12 to 15 show a second embodiment, Figure 12 shows a partial perspective view of the hinge, Figure 13 is an axial sectional view Fig. 14 shows another partial perspective view of the hinge and Fig. 15 shows the control plate viewed in perspective. FIG. 1 shows a motor vehicle seat 100 comprising a backrest 102 which is pivotally mounted on a seat 101 about a transverse horizontal pivot axis Y, also called a hinge axis, the seat 101 being mounted on the floor of the vehicle 105 if necessary via longitudinal rails 104. In addition, in the region of the hinge mechanism, there is provided a control handle 103 which allows a user to adjust the angular position of the backrest by 20 relation to the seat. The pivoting of the backrest 102 is possible thanks to an angular adjustment device, represented in FIG. 2, comprising a first articulation 10, on the left side of the seat, and a second articulation 20, optional 25 according to the invention, on the right side of the seat. seat, operable synchronously by the control handle 103 on the left side or any other actuating device (for example an 'easy entry' type control for access to the rear seats of a 3-door vehicle).
    [0011] These first and second joints 10,20, are adapted to block the pivoting of the backrest 102 relative to the seat 101 under normal use, and are also adapted to allow a rotational movement of the folder when the user requests the control handle 103.
    [0012] It will be appreciated that the first hinge 10 and optionally the second hinge 20 may be used to connect any seat member to another seat member and not necessarily the seat and the backrest. It will be noted here that FIGS. 1 and 2 are common to the two embodiments illustrated in the following figures. As represented in FIGS. 3 to 9, concerning the first embodiment, the first articulation 10 firstly comprises first and second metal flanges 7, 8 respectively fixed to the structural reinforcement of the seat and to the structural frame of the folder (the opposite is of course possible). These two flanges 7, 8 have a general shape of disc 15 and are interconnected by a metal outer ring crimped 87 thus delimiting an interior space which contains a locking device which will be detailed later. By pure convention, the first flange 7 is sometimes called the 'mobile' flange, and the second flange 8 is called the 'fixed' flange; however, the first flange may be integrally connected to either the backrest or the seat, and the second flange integrally connected inversely to the seat or backrest.
    [0013] The locking device comprises a plurality of displaceable metal locking beads 21, 22, each having an external toothing 27, 28 in the form of a circular arc and an operating peg 59. The first flange 7 comprises a peripheral annular zone 30, called also curb 70, having a toothed surface 71, oriented radially inwards and located vis-à-vis the external teeth 27,28 of the locking elements 21,22. This toothed surface 71 is circular and is referred to as the 'base toothing' in the present document.
    [0014] The basic toothing comprises N teeth evenly spaced at an angular pitch of 360 / N degrees. Preferably, N will be chosen as a multiple of 6, so as to have a repetition of pattern on the basic toothing every 60 °. In the illustrated example, N is 192, but N could be different, for example 186, 180, 174, 168, or 198 or the like. Advantageously, two sets of locking grains (also called 'locking' elements), a first series of first grains marked 21 and a second series of second grains marked 22 are provided. More generally, a set of P sub-elements is defined. sets of toothed grains, each subassembly comprising one or more toothed grains, the notion of subassembly corresponding to the possibility for all the toothed grains of this subset to be engaged at the same time in the basic toothing. Here in this case in this first embodiment, we have P = 2, and three toothed grains in each of the two subsets. The first subset 20 comprises three first grains the second subset comprises three second grains. Each locking grain 21,22 is radially displaceable in guides 14 belonging to the second flange 8, between an engaged position where the toothing 27,28 of the locking grain engages the above-mentioned base toothing 71 (grains 22, FIG. 8) and a disengaged position (FIG. 10) in which the locking grain 21, 22 is moved radially inwards so that its toothing 27, 28 does not cooperate with the base toothing 71, and thus releases the rotation of the second flange 8 relative to the first flange 7. In the example, the guides 14 flank the grains and define a purely radial translation with their edges 14a but it is not excluded to have an inclination of the guide relative to the 35 radial direction.
    [0015] The first hinge 10 further comprises a control hub 1 pivotally mounted about the Y axis and adapted to cause the locking grains 21,22 to move between their engaged position and their disengaged position. This control hub 1 is integrally associated with a control plate 9 (also called 'control mask') and cooperates with two control cams 31, 32 as will be detailed hereinafter.
    [0016] The first control cam 31 cooperates with the first locking beads 21 by means of radial thrust lugs 81 that ramp on their outer peripheral rim to push the grains outwardly.
    [0017] In the illustrated example, there are three first locking beads 21 arranged at 120 ° from each other, and there are also three radial thrust tabs 81 facing each other in the first control cam 31. Similarly, the second control cam 32 cooperates with the second locking beads 22 by means of radial thrust tabs 82 which ramp on their outer peripheral edge. In the illustrated example, there are three second locking beads 22 arranged at 120 ° from each other, offset by 60 ° with respect to the first locking beads 21, and there are also three pushing lugs. radial 82 facing the second control cam 32. Advantageously, the first three locking beads 21 and the three second locking beads 22 are arranged in the same plane at the same axial position, alternately all around the base teeth (Figure 5), a grain every 60 °. The first three locking beads 21 are identical to each other and have a set of teeth 27, the three second grains 22 are identical to one another and 3025758 13 have a set of teeth 28. Advantageously, the teeth 27 of the first series of grains are offset. angularly about the axis with respect to the teeth 28 of the second series of grains, with a gap (K + 0.5) 360 / N, K being an integer, in other words an offset of half a tooth . Thus, the first series of grains and the second series of grains can not be engaged at the same time, it will be one or the other. It should be noted here that the offset of a half-tooth 10 could be obtained in alternative solution by a slight shift (1/2 tooth) of the three guides 14 guiding the second grains with respect to the three guides guiding the first grains, and this with strictly identical grains. The first control cam 31 is biased towards a so-called locking position which, by means of a cam effect, engages the toothing 27 of the first grains in the basic toothing 71, this return being provided by two first springs 41 arranged in cuvettes 94 of the second flange 8.
    [0018] Similarly, the second control cam 32 is biased towards a locking position which, by camming, causes engagement of the toothing 28 of the second grains in the base toothing 71, this return being provided by two second springs. 42 arranged in two other cuvettes 94 of the second flange. It should be noted that the return of the first and second cams is provided independently by the first and second springs 41,42 mentioned above. The first control cam 31 is a stamped metal part and comprises an annular main body 35 from which radially extending the radial thrust lugs 81 already mentioned, two return pins 51 extending axially from the base of the two legs. radial thrust, and a drive notch 37 formed on the radially inner face of the main body. Similarly, the second control cam 32 is a stamped metal part, and comprises an annular main body 36 from which radially extending radial push tabs 82 already mentioned, two return pins 52 extending axially from the base of the two radial thrust tabs 82, and a drive notch 38 formed on the radially inner face of the main body.
    [0019] The control hub 1, made of plastic, comprises a cylindrical bearing surface 16 received in a bearing 80 of the second flange, a flange 17, three driving walls 19 for driving the two cams and the control plate; in addition, there are two diametrically opposed return pins 53 which extend outwardly from the collar but which are thicker; The control hub 1 is elastically biased by two third springs 40 to a rest position also called the neutral position, these third springs coming to rest on the aforementioned return pins 53. As illustrated in FIG. 5, the first, second and third springs 41, 42, 40 are preferably identical, arranged in the same plane at the same axial position, and distributed around the axis every 60 °.
    [0020] Each spring is in the form of a spiral spring and comprises firstly a first end 46 forming an anchorage on a semicircular pin 84 of the first flange, and secondly a second end 47 bearing respectively on a spigot 51 belonging to the first cam 31, a lug 52 belonging to the second cam 32, or a lug 53 belonging to the control hub 1. In the illustrated example, there are first 2 springs 41, but there could be one or three, likewise there are two second springs 42 shown but there could be one or three. Each spring is housed in an individual bowl 94. In the illustrated example (FIG 11) each bowl is interposed between two guides 14 of grains formed in the shape of the second flange 8. The control hub 1, also called the internal hub is supplemented by an outer hub 6. The control hub 1 can be moved in rotation by the actuation of the handle 103 via the outer hub 6 to an unlocking position 10 where the control plate 9 causes the locking grains 21,22 to move them radially inwards to the unlocked position (Figure 10). The control plate 9 is preferably made of plastic. It is presented as a disk with a central axial opening 92, with drive notches 99 (receiving the walls 19 of the inner hub 1) and peripheral edges 93 with ramp shapes 95, adapted to cooperate by camming with the maneuvering pins 59 of the locking grains 21, 22 (FIG. 10). As illustrated in FIGS. 2, 3, an optional connecting bar 5, preferably metal, connecting the two joints 10, 20 (see below) is provided.
    [0021] Once the assembly is made, the three parts that are the inner hub 1, the outer hub 6, and the connecting bar 5 form an integral whole here called 'control shaft', immobilized along the axial direction thanks to trapping the inner hub in articulation, but with a degree of angular freedom with respect to the first and second control cams 31,32. The external control hub 6 comprises three stop lobes 66 designed to cooperate with stops (not shown) coming from the armature connected to the second flange. The outer hub 6 also comprises flexible clipping tabs 61 which extend in the axial direction Y, and which are provided to snap into grooves 12 of rectangle shape formed in the central orifice of the inner hub 1.
    [0022] It is important to note, although this case is not shown in the figures, that only one hinge 10 can be used for the implementation of the present invention, without a link bar proper. When, as shown, the connecting bar 5 comprises a cylindrical tube centered on Y with trilobal ends at each end, each lobe 54 being provided to be housed in a concave housing 18 of the inner hub 1, in particular to ensure the rotational drive.
    [0023] With reference to the figures, the operation of the joint is now described. At rest, the control shaft is in the so-called rest position denoted a0 (FIG.9), without any action on the control cams, due to the presence of the angular clearance 0 ("dead" stroke). When the user actuates the handle 103 (in the illustrated example clockwise), the control shaft rotates to the position al (driving position) where it first contacts the control cam (first or second) corresponding to the series of 25 locked grains. As illustrated in FIG. 8, the fingers or walls 19 for driving the inner hub then contact the edge of the notches 38 of the second cam to rotate said cam and release the engagement of the second grains. Continuing the rotation, the inner hub 1 then drives (position a2) the first control cam 31 which was not fully biased to the locking position (the first grains were tooth to tooth). In parallel, in the same movement, under the effect of the ramp shapes 95 of the control plate 9, the six locking grains 21,22 are pulled radially inwards to perfectly release the relative rotation of the first and second flanges 7,8, that is to say the adjustment of the position of the backrest.
    [0024] Note that the resisting force is progressive along the angular stroke; in the dead stroke only the third springs 40 oppose the stress of the user, they are then seconded by the second springs 42 on the next part of the race and finally 10 is added the effort of the first springs 41 when both cams are pushed towards the unlocking position (Fig. 10). The zero stroke 0 is typically between 3 ° and 10 °. If the second hinge 20 is present, for the second part of the stroke, both the first, second and third springs oppose the user exertion. For the second articulation 20, the dead stroke 0 'may be slightly different from 0, but there is of course an angular difference which ensures that, the control shaft being returned to the rest position, the two joints are perfectly locked. When the user releases the stress on the control shaft, the first and second springs recall the cams to their locking position (trigonometric direction in the illustrated example) and therefore they tend to push the grains locking to the engagement position. However, as already mentioned, only one of the series of grains of the two series will be in a more favorable position for the engagement in the base teeth 71. Thus, the series of grains in the most favorable position (the second in the illustrated example) engages in the basic toothing, while the other series of grains will remain in a tooth-to-tooth position (FIG. 9A). In addition, the control shaft 35 returns to its rest position under the effect of the third springs 40, away from the driving positions of the first and second cams. As regards the assembly, the inner hub 1 is integrated with the hinge itself and is immobilized axially by the flange 17 as sandwiched by the stack of the first flange 7, the control plate 9 , the first cam 31, the second cam 32 and the second flange 8, all closed by the crimped outer ring 87.
    [0025] To assemble the control shaft, the control rod 5 is threaded into the axial recesses, then the external hub 6 is clipped. The tongues 61 provided with hook shapes are clipped onto the internal hub 1 (grooves 12). ), and other forms of clipping are housed in square holes 55 provided at the end of the control rod 5. As a result, the control shaft is assembled manually without tools. In this way, there is no need to provide axial immobilization at the second hinge when it is present. The second articulation 20 may be a symmetrical image of the first articulation 10 with respect to the Y axis on the opposite side of the seat, it may also contain two series of grains and two control cams 25 to obtain an equal locking pitch at half the pitch of the basic toothing. note that obtaining a step of inferior 1 ° favors the locking joints left to right, and decreases the one of the two joints is not well locked due to a slight angular shift between the left and right joints. As illustrated by the second embodiment, it is intended to further reduce the pitch of the articulation relative to a base pitch of the toothing. this is illustrated in particular in FIGS. 12 to 15. Any elements or entities which are not specifically described with respect to this second embodiment will be considered as similar or identical to the elements already described for the first embodiment. In this second embodiment, we have five (P = 5) subsets of grains, each subset comprising a single locking grain, respectively labeled 21,22,23,24,25. In this configuration, only one grain is fully engaged (the third marked 23 in the case illustrated in Fig 12) while the others are partially engaged or in the tooth-to-tooth configuration.
    [0026] The control cams are formed by metal wedges guided in a tangential direction by recessed shapes 95 in the second flange 8; It should be noted that the metal wedges here play the role of the annular cams of the first embodiment, but here an individual control cam is found for each of the locking grains. The first cam 31 acts on the first grain 21, and similarly the other control cams 32-35 respectively act individually on the other grains 22-25 (Fig 12).
    [0027] More precisely, in the example illustrated, the cams have a parallelepipedal general external shape, with a cutaway portion 39 which serves as a cam or wedge shape. Each metal corner 31-35 is independently recalled by an individual spring 41-45; in the illustrated example, it is a spring working in compression which is supported on the one hand in the bottom 86 of a housing 85 and on the other hand on the rear 30b of the metal wedge. In the illustrated example, the return springs 41-45 are small compression-acting coil springs 35 and urge the locking wedges straight in a tangential direction. In FIG. 14, only the first return spring 41 is shown, the other return springs 42-45 of the locking cams are not shown for the sake of clarity. The control hub 1 is formed simply by the plastic control plate 9 which has axially projecting lugs 90, each of these lugs being adapted to respectively push each of the locking wedges 10 against its return spring. More specifically, the lug 90 comes to bear on the front end face 30a of the corner. In the illustrated example, the teeth of two consecutive toothed grains are separated by an angular difference of 72 degrees, and the basic toothing 71 has N teeth, N not being a multiple of five, for example 192, or else any other value in the ranges 151-154, 156-159, 161164, 166-169, etc. Preferably N is chosen to be a multiple of five plus or minus 1, for example 189 or 186 teeth, to thereby obtain a possible setting step equivalent to a division by five of the pitch of the basic toothing. It will be noted that the housings 86 for guiding the locking cams 31-35 are obtained directly in shape in the second flange 8 of the articulation, in the same plane as the guides 14 which frame the movement of the locking grains 21. 25. With regard to the operation of such an articulation according to the second embodiment, it is understood that starting from a position where one of the grains is engaged and that the handle 103 is urged to modify the angular adjustment of the backrest, all the grains are returned inwards by the rotation of the control plate 9 and the cam effect of the ramps 95 which pull the grains via their operating pins 59, and then the user releases the handle, then locking is obtained by engaging one of the five grain, not necessarily a grain adjacent to the previously engaged grain, generally the one that is angularly closest to a full engagement position. Of course, the number P of subsets could be 3 or 4. For example, it would be possible to have three subsets (P = 3) of each two diametrically arranged toothed grains that can be simultaneously engaged in the basic toothing. It is thus possible to express, in a generalized manner, the characteristic of the angular offset of the teeth of the toothed grains the following formulation: the teeth (27) of the first grain (s) are angularly offset around the axis with respect to the teeth (28) of the second (s) grain (s), a difference substantially equal to (K + 1 / P) 360 / N degrees, K being integer, N being the number of teeth of the basic toothing 71 and P being the number of toothed grain subsets.
    [0028] Ultimately, the number P of subassemblies may advantageously take a value of between 2 and 6. In the case where P = 2, each subassembly may comprise either a single toothed grain, or two toothed grains, or three grains. As illustrated in the first embodiment, four toothed grains are provided. In the case where P = 3, each subassembly may comprise either a single toothed grain or two toothed grains In the case where P = 4, each subassembly may comprise either a single toothed grain or two toothed grains. In the case where P = 5, each subassembly will comprise a single toothed grain as illustrated in the second embodiment.
    [0029] In the case where P = 6, each subassembly will comprise a single toothed grain. When the subset contains an even number of toothed grains, the latter will preferably be arranged diametrically opposite two by two. 5
    权利要求:
    Claims (14)
    [0001]
    REVENDICATIONS1. A motor vehicle seat joint (10) for angular adjustment of a seat back (102) relative to a seat seat (101) about a hinge axis (Y), the hinge comprising: first and second hinge flanges (7, 8) intended to be integrally connected respectively to said seat back and seat, the first flange (7) comprising a base toothing (71) on a radially directed rim (70); inward, with N teeth evenly spaced at an angular pitch of 360 / N degrees, - a set of P subsets of toothed grains of which at least: - a first subset of one or more first grain (21) cooperating with a first control cam (31) recalled by one or more first springs (41), - a second subassembly of one or more second grains (22) cooperating with a second control cam (32) 20 recalled by one or more second springs (42), the first and second grains and at least radially displaceable, guided by guides formed in the second flange and comprising teeth for engaging with the base toothing (71), the first and second grains 25 being movable between an engagement position where the teeth of the grains are engaged in the basic toothing vis-à-vis, and a release position in which there is no mutual engagement of the teeth, - a control hub (1) adapted to move the first 30 and second control cams to an unlocking position, while the first and second springs independently bias the first and second cams (31,32) to a locking position, wherein the teeth (27) of the first grain (s) (s) 35 are angularly offset about the axis relative to the 24 teeth (28) of the second (s) grain (s), a difference substantially equal to (K + 1 / P) 360 / N degrees, K being whole.
    [0002]
    2. Articulation according to claim 1, wherein the control hub (1) is returned to a rest position by one or more third springs (40).
    [0003]
    3. Articulation according to one of claims 1 to 2, wherein P = 2, the first subset of first grains (21) comprises three grains offset at 120 ° from each other, and the second subset of second grains (22) comprises three grains offset at 120 ° from each other.
    [0004]
    4. Articulation according to claim 3, wherein the first 15 and second grains are arranged in the same plane at the same axial position, arranged alternately all around the base toothing.
    [0005]
    5. Articulation according to one of claims 3 to 4, wherein the first grains (21) are similar to the second grains (22), except the toothing (27) of the first grains which is shifted by half a tooth by relative to the teeth of the second grains (28). 25
    [0006]
    6. Articulation according to one of claims 3 to 5, wherein N is chosen as a multiple of 6.
    [0007]
    The joint according to one of claims 3 to 6, wherein each of the first and second control cams 30 is rotatably mounted about the hinge axis (Y) and comprises an annular main body (35,36). and a plurality of radial thrust lugs (81, 82), preferably three in number, the radial thrust lugs of the first and second cams being arranged in the same plane at the same axial position as the locking grits, while 3025758 The annular main body (35) of the first cam is axially offset from the annular main body (36) of the second cam.
    [0008]
    8. Articulation according to claim 1, wherein there are P = 5 subassemblies each comprising a toothed grain, the teeth of two consecutive toothed grains being offset from each other by an angular distance of 72 degrees and N n not being multiple of 5.
    [0009]
    9. Articulation according to claim 8, wherein the control cams are metal wedges (31,32) guided in a tangential motion and driven by helical compression springs (41,42).
    [0010]
    10. Articulation according to claim 9, wherein the metal corners are arranged in the same plane at the same axial position, the helical compression springs also being preferably arranged in the same plane.
    [0011]
    11. Articulation according to claim 9, wherein the control hub (1) is a plastic control plate (9) comprising lugs (90) protruding axially and configured to push the corners when the control plate rotates to a position unlocking.
    [0012]
    12. Articulation according to claim 1, wherein there are P = 3 subassemblies each comprising two toothed grains.
    [0013]
    13. Articulation according to one of claims 1 to 12, wherein there is provided an angular clearance (0) between the rest position (a0) of the control hub and the driving position of each of the control cams (al , a2), this set 3025758 26 angular being greater than 3 °.
    [0014]
    14. Vehicle seat comprising at least one hinge (10) according to any one of claims 1 to 13.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP2995498B1|2018-01-03|Device for adjusting the tilt of a vehicle seat by smaller increments
    EP0770514B1|1999-05-06|Hinge mechanism for vehicle seats
    EP0694434B1|1997-09-24|Hinge fitting for vehicle seat
    FR2977205A1|2013-01-04|ANGULAR ADJUSTMENT DEVICE FOR VEHICLE SEAT
    EP0023863A1|1981-02-11|Hinge devices for seat backs
    FR2882708A1|2006-09-08|ROTARY INCLINATION DEVICE FOR THE VEHICLE SEAT ASSEMBLY
    FR2837434A1|2003-09-26|Seat reclining mechanism for vehicle, has pawl with a side surface that forms clearance with guide surface of guide groove which can be changed to have optimal width when pawl is shifted from non-engaging to engaging positions
    FR2920713A1|2009-03-13|MECHANISM FOR ADJUSTING THE TILT OF A MOTOR VEHICLE SEAT
    FR2873633A1|2006-02-03|JOINT MECHANISM FOR A VEHICLE SEAT AND SEAT COMPRISING SUCH A MECHANISM
    FR2967102A1|2012-05-11|ADJUSTING MECHANISM FOR VEHICLE SEAT
    FR2946927A1|2010-12-24|ASSEMBLY WITH STOP CLOSURE AND FREE PIVOTING MECHANISM
    FR2884463A1|2006-10-20|ADJUSTING MECHANISM AND VEHICLE SEAT COMPRISING SUCH A MECHANISM
    FR2792583A1|2000-10-27|Articulation mechanism for a vehicle seat, utilizes a fixed and a rotating flange assemblies fitted within an annular toothed arrangements
    FR3024080A1|2016-01-29|ANGULAR ADJUSTMENT DEVICE FOR VEHICLE SEAT
    FR2972972A1|2012-09-28|JOINT SYSTEM AND VEHICLE SEAT COMPRISING SUCH A JOINT SYSTEM
    FR2949719A1|2011-03-11|AUTOMOTIVE VEHICLE SEAT TILTING ADJUSTMENT MECHANISM, VEHICLE SEAT AND METHOD OF MANUFACTURING THE SAME.
    FR2841838A1|2004-01-09|VEHICLE SEAT HAVING A JOINT MECHANISM
    FR2945772A1|2010-11-26|STOP CLUTCH FOR CLOSING TWO PARTS OF VEHICLE
    FR2956623A1|2011-08-26|Motor vehicle seat joint for use in angular adjusting device, has control plate comprising elastic legs exerting radial force on drive shaft for reducing radial clearance between drive shaft and control component
    FR2869848A1|2005-11-11|Vehicle seat articulation mechanism, has flange with teeth series having irregularity to avoid partial notching of teeth series in teeth series of dowel when pinion contacts with irregularity
    FR2884191A1|2006-10-13|Motor vehicle`s seat articulation mechanism, has rising step in shape of wedge pushing back locking step in locking position when rising step is in active position and unlocking position when rising step is in pitch position
    FR3001927A1|2014-08-15|Mechanism for articulating seat of motor vehicle, has leg with maintenance portion extending radially into longitudinal axis with respect to cam, where leg is integrated into control plate and extended from control plate to cam
    EP3253615B1|2019-04-10|Releasable hinge assembly for a motor vehicle seat
    WO2014080114A1|2014-05-30|Motor vehicle seat articulation mechanism
    FR2971748A1|2012-08-24|Hinge assembly for connecting base and backrest of seat of motor vehicle, has set of flanges, and hinge mechanism that is placed between one of flanges and third flange in direction of articulation axis
    同族专利:
    公开号 | 公开日
    EP2995498A1|2016-03-16|
    US9616780B2|2017-04-11|
    US20160075261A1|2016-03-17|
    EP2995498B1|2018-01-03|
    ES2658788T3|2018-03-12|
    EP3296152A1|2018-03-21|
    KR20160031444A|2016-03-22|
    FR3025758B1|2016-10-21|
    KR101781474B1|2017-09-25|
    CN105416112B|2018-01-02|
    CN105416112A|2016-03-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2004080748A2|2003-03-10|2004-09-23|Porter Group, Llc|Vehicle seat back recliner|
    DE102005026966B3|2005-06-10|2006-12-21|Keiper Gmbh & Co.Kg|Fitting for motor vehicle seat has separate fittings in form of locking fittings, and first fitting part in center of fitting common to both separate fittings|
    US20070040435A1|2005-08-22|2007-02-22|Yasukazu Oki|Recliner adjuster having main and auxiliary lock gears|
    FR2920713A1|2007-09-12|2009-03-13|Faurecia Sieges Automobile|MECHANISM FOR ADJUSTING THE TILT OF A MOTOR VEHICLE SEAT|
    US20140159458A1|2011-08-24|2014-06-12|Hubei Aviation Precision Machinery Technology Co.,|Seat angle adjustment device and seat having the same|
    DE19508328C2|1995-03-09|2002-10-31|Keiper Gmbh & Co|locking device|
    FR2873633B1|2004-07-29|2006-10-27|Faurecia Sieges Automobile|JOINT MECHANISM FOR A VEHICLE SEAT AND SEAT COMPRISING SUCH A MECHANISM|
    CN102026562A|2008-02-05|2011-04-20|费希尔动力有限公司|Multi-pawl round-recliner mechanism|
    KR101372058B1|2008-04-16|2014-03-07|주식회사다스|seat reclining device|
    FR2977204B1|2011-06-28|2016-09-30|Faurecia Sieges D'automobile|ANGULAR ADJUSTMENT DEVICE FOR VEHICLE SEAT|
    US8985689B2|2012-06-27|2015-03-24|Lear Corporation|Recliner mechanism|
    US20150321585A1|2014-05-12|2015-11-12|Lear Corporation|Recliner Mechanism|
    FR3025758B1|2014-09-12|2016-10-21|Faurecia Sieges D'automobile|ANGLE ADJUSTING DEVICE NOT REDUCED FOR VEHICLE SEAT|FR3025758B1|2014-09-12|2016-10-21|Faurecia Sieges D'automobile|ANGLE ADJUSTING DEVICE NOT REDUCED FOR VEHICLE SEAT|
    JP6491978B2|2015-08-07|2019-03-27|シロキ工業株式会社|Reclining device|
    CN106183905A|2016-08-31|2016-12-07|宁波志海汽车部件科技发展有限公司|A kind of angle regulating device for seat of vehicle with fine setting operation handle|
    CN106335411A|2016-08-31|2017-01-18|宁波志海汽车部件科技发展有限公司|Automobile seat angle adjuster|
    EP3293041A1|2016-09-09|2018-03-14|Hubei Aviation Precision Machinery Technology Co., Ltd.|Angle adjusting device and seat having the same|
    KR101959006B1|2017-06-20|2019-03-18|현대트랜시스|Recliner for vehicle seat|
    FR3072620B1|2017-10-25|2021-03-19|Faurecia Sieges Dautomobile|ANGULAR ADJUSTMENT DEVICE FOR VEHICLE SEAT|
    KR101972336B1|2017-10-31|2019-04-25|주식회사 다스|Recliner Of Vehicle Seat|
    EP3825170A1|2018-07-20|2021-05-26|Hubei Aviation Precision Machinery Technology Co., Ltd.|Vehicle seat and angle adjustment device thereof|
    KR20200093098A|2019-01-25|2020-08-05|주식회사 대동시스템|Actuating assembly for vehicle seat tilt adjustment|
    法律状态:
    2015-08-27| PLFP| Fee payment|Year of fee payment: 2 |
    2016-03-18| PLSC| Search report ready|Effective date: 20160318 |
    2016-08-22| PLFP| Fee payment|Year of fee payment: 3 |
    2017-08-22| PLFP| Fee payment|Year of fee payment: 4 |
    2018-08-22| PLFP| Fee payment|Year of fee payment: 5 |
    2019-08-20| PLFP| Fee payment|Year of fee payment: 6 |
    2020-08-19| PLFP| Fee payment|Year of fee payment: 7 |
    2021-08-19| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1458572A|FR3025758B1|2014-09-12|2014-09-12|ANGLE ADJUSTING DEVICE NOT REDUCED FOR VEHICLE SEAT|FR1458572A| FR3025758B1|2014-09-12|2014-09-12|ANGLE ADJUSTING DEVICE NOT REDUCED FOR VEHICLE SEAT|
    EP17193825.1A| EP3296152A1|2014-09-12|2015-09-09|Angular adjustment device with reduced pitch for vehicle seat|
    EP15184540.1A| EP2995498B1|2014-09-12|2015-09-09|Device for adjusting the tilt of a vehicle seat by smaller increments|
    ES15184540.1T| ES2658788T3|2014-09-12|2015-09-09|Reduced pitch angular adjustment device for vehicle seat|
    US14/852,416| US9616780B2|2014-09-12|2015-09-11|Device for adjusting the tilt of a vehicle seat by smaller increments|
    CN201510580956.8A| CN105416112B|2014-09-12|2015-09-14|The inclined device of automotive seat is adjusted with smaller increment|
    KR1020150129610A| KR101781474B1|2014-09-12|2015-09-14|Device for adjusting the tilt of a vehicle seat by smaller increments|
    [返回顶部]