Airbag device

Abstract

To provide an airbag device that can enhance the protection performance for an occupant seated on a vehicle seat.SOLUTION: An airbag device 5 includes: an airbag module 51; a webbing 54 which surrounds the airbag module 51; an isolation member 55 which is fixed to the webbing 54 and arranged between the webbing 54 and a backside frame 11; and a connection member 56 which connects the airbag module 51 to the backside frame 11 via the isolation member 55. The isolation member 55 is formed so as to extend in the direction Y along the backside frame 11. Additionally, a recessed part 60 that is recessed toward an end edge 55X2 side in the direction X is formed in an end edge 55X1 in the direction X which intersects with the direction Y of the isolation member 55.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an airbag device. [Background technology]

[0002] Patent Document 1 describes an airbag system including a fastener assembly that connects an airbag module to a seat frame, a webbing connected to the fastener assembly and surrounding the airbag module, and an isolator provided between the seat frame and the airbag module, wherein the seat frame has a first shape, and the isolator has a second shape proximal to the airbag module and the webbing that substantially matches the first shape. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5270568 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the technique disclosed herein is to provide an airbag device that can improve the protection performance of an occupant in a vehicle seat. [Means for solving the problem]

[0005] An airbag device according to one embodiment of the technology disclosed herein comprises an airbag module, a cloth member surrounding the airbag module, an isolation member fixed to the cloth member and positioned between the cloth member and a frame of a vehicle seat, isolating the frame and the cloth member, and a connecting member connecting the airbag module to the frame via the isolation member, wherein the isolation member is formed to extend in a first direction along the frame, and a recessed portion is formed at one end edge of the isolation member in a second direction intersecting the first direction, the recessed portion being recessed toward the other end edge in the second direction. Effect of the Invention

[0006] According to the technique of the present disclosure, it is possible to improve the protection performance of an occupant in a vehicle seat. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is an external perspective view showing a schematic configuration of a vehicle seat 1 including an airbag device 5 according to one embodiment of the technology of the present disclosure. [Diagram 2] FIG. 2 is a schematic cross-sectional view of a portion of the left side of the seat back 3 where the airbag device 5 is provided. [Diagram 3] FIG. 3 is a schematic diagram of the airbag device 5 as viewed from the left. [Figure 4] FIG. 4 is a plan view of the isolation member 55. As shown in FIG. [Diagram 5] FIG. 5 is a schematic diagram for explaining the state in which the inner strength fabric 54B and the covering material 14F are sewn together. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] FIG. 1 is an external perspective view showing a schematic configuration of a vehicle seat 1 including an airbag device 5 according to an embodiment of the technology of the present disclosure. The vehicle in this specification includes an automobile, an airplane, a train, a ship, and the like. In the following description, the front of a seated person sitting in a normal posture on the vehicle seat 1 shown in FIG. 1 is described as a forward direction Fr, the opposite direction of the forward direction Fr is described as a rearward direction Rr, and these are collectively described as a front-rear direction. In addition, the right side of the seated person when the seated person is seen from behind is described as a right direction R, and the left side of the seated person is described as a left direction L, and these are collectively described as a left-right direction. The left-right direction is synonymous with the seat width direction of the vehicle seat 1. In addition, the direction perpendicular to the front-rear direction and the left-right direction, from the headrest 4 toward the seat cushion side, is described as a downward direction D, and the opposite direction of the downward direction D is described as an upward direction U, and these are collectively described as a vertical direction. The vertical direction is synonymous with the height direction of the vehicle seat 1.

[0009] The vehicle seat 1 includes a seat cushion 2 that supports the buttocks and thighs of the seated occupant, a seat back 3 that supports the waist and back of the seated occupant, a headrest 4 that supports the head of the seated occupant, and an airbag device 5 to protect the seated occupant.

[0010] 1, the airbag device 5 is installed on one side of the seat back 3 in the seat width direction. The airbag device 5 may be installed on one side of the seat cushion 2 in the seat width direction. The airbag device 5 may be installed on the rear side of the seat back 3 to protect an occupant sitting behind the vehicle seat 1.

[0011] The seat back 3 has a frame 10 that forms the framework of the seat back 3. The frame 10 includes a pair of back side frames 11, 12 that are spaced apart in the left-right direction and extend in the up-down direction. The frame 10 is covered with a cushion pad 13 made of a relatively soft resin foam material such as urethane foam, and is further covered with a trim cover 14 made of a covering material such as leather, woven fabric, or nonwoven fabric.

[0012] The seat cushion 2, like the seat back 3, has a frame including a pair of cushion side frames that are spaced apart in the left-right direction and extend in the front-rear direction. This frame is covered with a cushion pad made of a relatively soft resin foam material such as urethane foam, and is further covered with a trim cover made of a skin material such as leather, woven fabric, or nonwoven fabric.

[0013] 2 is a schematic cross-sectional view of a portion of the left side of the seat back 3 where the airbag device 5 is provided. The airbag device 5 includes an airbag module 51, a single strip-shaped webbing 54 in the illustrated example constituting a fabric member surrounding the airbag module 51, an isolating member 55 disposed between the webbing 54 and the back side frame 11 and isolating the back side frame 11 and the webbing 54, and a connecting member 56 that connects the airbag module 51 to the back side frame 11 via the isolating member 55. In the example of FIG. 2, the connecting member 56 includes fasteners such as a bolt 56a and a nut 56b. The airbag device 5 is disposed in a hollow portion provided in the cushion pad 13, is covered by the cushion pad 13 and the trim cover 14, and is built into the seat back 3.

[0014] The airbag module 51 includes an airbag 52 and an inflator 53 that inflates and deploys the airbag 52. In the example of Fig. 2, the inflator 53 is a cylinder type that is a cylindrical shape extending in the vertical direction, and is connected to a left surface (an end surface 11A described below) of the backside frame 11 by a connecting member 56. The inflator 53 may be a disk type.

[0015] A vehicle including the vehicle seat 1 is equipped with an acceleration sensor that detects a collision, and an ECU (Electronic Control Unit) that determines whether or not to deploy the airbag 52 based on a signal output from the acceleration sensor. The ECU activates the inflator 53, and the airbag 52 is inflated and deployed by gas generated by the activated inflator 53.

[0016] The trim cover 14 has a breakage portion EX that becomes an opening for the airbag 52. The breakage portion EX is formed by a sewn portion where a plurality of skin materials are sewn together. In the example of FIG. 2, the breakage portion EX is formed by a sewn portion between a skin material 14F that covers the front surface of the seat back 3 and a skin material 14S that covers the side surface of the seat back 3, and is disposed on the front side of the airbag module 51. The cushion pad 13 is formed with a slit 13a that leads to the breakage portion EX. The inflated and deployed airbag 52 reaches the breakage portion EX through the slit 13a and breaks the breakage portion EX by the inflation pressure. The airbag 52 inflates to the outside of the seat back 3 through the broken breakage portion EX.

[0017] The webbing 54 is provided to guide the inflating and deploying airbag 52 to the breaking portion EX. The webbing 54 is made of a material having poor elasticity, for example, a woven or nonwoven fabric using polyester-based fibers or polyamide-based fibers.

[0018] One end 54ea in the longitudinal direction of the webbing 54 is sewn to an end 14Se near the broken portion EX of the skin material 14S. The other end 54eb in the longitudinal direction of the webbing 54 is sewn to an end 14Fe near the broken portion EX of the skin material 14F. As a result, the webbing 54 forms an annular storage space together with the trim cover 14, and a part of the airbag module 51 is stored in the storage space to surround the airbag module 51.

[0019] The webbing 54 is folded back behind the airbag module 51. In the following, the portion of the webbing 54 from the folded back portion to one end 54ea is referred to as an outer webbing 54A, and the portion from the folded back portion to the other end 54eb is referred to as an inner webbing 54B.

[0020] Fig. 3 is a schematic diagram of the airbag device 5 as viewed from the left. In Fig. 3, the airbag module 51 and the inner force cloth 54B are shown by imaginary lines. In Fig. 3, the outer force cloth 54A and the connecting member 56 are omitted. Fig. 4 is a plan view of the isolation member 55.

[0021] The isolating member 55 is in the form of a plate whose thickness direction is approximately the same as the left-right direction, and has an elongated shape extending along the back side frame 11. The isolating member 55 is made of a resin such as PC (polycarbonate), PE (polyethylene), PP (polypropylene), or PA (polyamide). From the viewpoints of strength, ease of molding, flame retardancy, and the like, the isolating member 55 is preferably made of PP.

[0022] 3, the direction in which the isolating member 55 extends (the longitudinal direction of the isolating member 55) is shown as direction Y, and the direction intersecting (orthogonal in the illustrated example) direction Y (the transverse direction of the isolating member 55 or the thickness direction of the seat back 3) is shown as direction X. Of the direction Y, the direction from the seat cushion 2 toward the headrest 4 is shown as direction Y1, and the opposite direction to direction Y1 is shown as direction Y2. Of the direction X, the direction from the front surface of the seat back 3 toward the rear surface is shown as direction X1, and the opposite direction to direction X1 is shown as direction X2.

[0023] The back side frame 11 extends upward from the bottom and is inclined backward, and includes an end face 11A on the isolating member 55 side. The end face 11A is a flat surface (a surface perpendicular to the left-right direction). The isolating member 55 is disposed inside the outer periphery of the end face 11A and is sandwiched between the end face 11A and the inner strength cloth 54B.

[0024] The isolating member 55 is disposed at a position eccentric to the X2 direction on the end surface 11A. As shown in Fig. 3, the isolating member 55 has an edge 55X2 on the X2 direction side that is shaped along an edge 11Ae on the X2 direction side of the end surface 11A of the back side frame 11 and is disposed adjacent to the edge 11Ae. The edge 11Ae and the edge 55X2 may overlap when viewed in the left-right direction.

[0025] The isolating member 55 has two holes arranged in the longitudinal direction at approximately the center of the isolating member 55. The hole on the Y1 side of the two holes has a ring-shaped first washer 55a, and the hole on the Y2 side of the two holes has a ring-shaped second washer 55b. The first washer 55a and the second washer 55b are preferably formed integrally with the isolating member 55.

[0026] In the inner force cloth 54B, holes are formed at positions overlapping with the first washer 55a and the second washer 55b. In the end surface 11A of the back side frame 11, holes are formed at positions overlapping with the first washer 55a and the second washer 55b. As shown in FIG. 2, two bolts 56a fixed to the inflator 53 pass through holes in the inner force cloth 54B and are inserted into the first washer 55a and the second washer 55b, respectively, and further, the tips of the bolts 56a are inserted into holes provided in the end surface 11A and are fastened by nuts 56b from the back side of the end surface 11A, thereby connecting the inflator 53 to the end surface 11A of the back side frame 11. The first washer 55a and the second washer 55b each constitute an insertion portion through which the bolt 56a as the connecting member 56 is inserted.

[0027] As shown in FIG. 3, the inner force cloth 54B overlaps a part of the isolating member 55, and is fixed to the isolating member 55 in the range where it overlaps with the isolating member 55. In the example of FIG. 3, a first fixing region 71 that fixes the isolating member 55 and the inner force cloth 54B is provided in a region of the isolating member 55 between the first washer 55a and the second washer 55b. In the example of FIG. 3, a second fixing region 72 that fixes the isolating member 55 and the inner force cloth 54B is provided in a region of the isolating member 55 on the direction Y2 side of the second washer 55b. The first fixing region 71 and the second fixing region 72 are respectively fixed by sewing, welding, adhesion, rivets, screws, or the like. As shown in FIG. 3, the first fixing region 71 and the second fixing region 72 are preferably formed in a straight line.

[0028] The first fastening region 71 is preferably provided as close as possible to the imaginary line L connecting the centers of the first washer 55a and the second washer 55b. As shown in FIG. 3, the first fastening region 71 preferably extends along the imaginary line L, and more preferably is located on the imaginary line L. As shown in FIG. 3, the second fastening region 72 is preferably provided at a position where at least a portion overlaps the imaginary line L. The second fastening region 72 may be provided so as to extend along the imaginary line L and be located on the imaginary line L. The length of the first fastening region 71 is preferably greater than the length of the second fastening region 72.

[0029] 3, the entire first fastening region 71 is provided in a range overlapping with the inflator 53. Also, a portion of the second fastening region 72 is provided in a range overlapping with the inflator 53. The second fastening region 72 may be provided in a range overlapping with the inflator 53 in its entirety.

[0030] 3 and 4, a recess 60 is formed in an edge 55X1 on the X1 side of the separating member 55, the recess 60 being recessed toward an edge 55X2 on the X2 side of the separating member 55. As shown in FIG. 3, the recess 60 is formed in an area overlapping with the inner strength cloth 54B.

[0031] As shown in FIG. 4, the edge 55X1 includes a recessed portion 60, a first straight portion 551 adjacent to the recessed portion 60 on the direction Y1 side, and a second straight portion 552 adjacent to the recessed portion 60 on the direction Y2 side, and the recessed portion 60 is recessed in the direction X2 side with respect to a line LA connecting the first straight portion 551 and the second straight portion 552.

[0032] The first straight line portion 551 is located on the direction X1 side of the recessed portion 60 and is linear extending in the direction Y. The second straight line portion 552 is adjacent to the direction Y2 side of the recessed portion 60, is located on the direction X1 side of the recessed portion 60 and is linear extending in the direction Y. The first straight line portion 551 and the second straight line portion 552 do not need to be linear and may be curved.

[0033] In this specification, a recessed portion refers to an area that is sufficiently recessed compared to its surroundings, and does not include minute recesses that may occur during molding, etc. A recessed portion refers to an area whose depth is, for example, 0.1 times or more, and preferably 0.25 times or more, the maximum width of isolation member 55 in direction X.

[0034] The recess 60 has a meandering curved shape and includes contact points P1, P2, P3, P4, and P5, which are connected by tangents parallel to the direction Y. The contact points P1, P2, P3, P4, and P5 are arranged in this order from the direction Y1 side. The contact point P1 is disposed on the direction Y1 side of the first washer 55a. The contact point P2 is disposed at approximately the same position as the center of the first washer 55a in the direction Y. The contact point P3 is disposed between the first washer 55a and the second washer 55b in the direction Y. The contact point P4 is disposed at approximately the same position as the center of the second washer 55b in the direction Y. The contact point P5 is disposed on the direction Y2 side of the second washer 55b in the direction Y.

[0035] The contact point P1 is disposed on the X1 side of the center of the first washer 55a in the direction X. The contact point P2 is disposed on the X1 side of the contact point P1 in the direction X. The contact point P3 is disposed on the X2 side of the contact point P2 and on the X1 side of the virtual line L in the direction X. The contact point P4 is disposed on the X1 side of the contact point P3 in the direction X. The contact point P5 is disposed on the X2 side of the contact point P4 in the direction X and on the X1 side of the contact point P1. It is preferable that the contact point P5 is disposed on the X2 side of the center of the second washer 55b.

[0036] A first recessed portion 61 is formed by a curve connecting an end 551e of the first straight portion 551 on the Y2 side, the tangent point P1, and the tangent point P2. A second recessed portion 62 is formed by a curve connecting an end 552e of the second straight portion 552 on the Y1 side, the tangent point P5, and the tangent point P4. As shown in FIG. 3, the second recessed portion 62 overlaps with the inflator 53 when viewed in the left-right direction. A third recessed portion 63 is formed by a curve connecting the tangent points P2, P3, and P4. The distance from the line LA to the tangent point P1 in the X direction is defined as the depth of the first recessed portion 61. The distance from the line LA to the tangent point P5 in the X direction is defined as the depth of the second recessed portion 62. The distance from the line LA to the tangent point P3 in the X direction is defined as the depth of the third recessed portion 63. Thus, the recess 60 includes a first recess 61, a second recess 62 that is deeper than the first recess 61, and a third recess 63 between the first recess 61 and the second recess 62.

[0037] If the position of the contact point P1 in the direction Y is defined as the position of the first recessed portion 61, the first recessed portion 61 can be said to be disposed between the first washer 55a and the first edge 55Y1 on the direction Y1 side of the isolating member 55. If the position of the contact point P5 in the direction Y is defined as the position of the second recessed portion 62, the second recessed portion 62 can be said to be disposed between the second washer 55b and the second edge 55Y2 on the direction Y2 side of the isolating member 55. If the position of the contact point P3 in the direction Y is defined as the position of the third recessed portion 63, the third recessed portion 63 can be said to be disposed between the first washer 55a and the second washer 55b.

[0038] FIG. 5 is a schematic diagram for explaining the sewing state between the inner force cloth 54B and the upholstery material 14F. As described above, the end 14Fe of the upholstery material 14F and the other end 54eb of the inner force cloth 54B are sewn together. The end 14Fe and the other end 54eb are folded back and sewn at both ends in the short direction of the other end 54eb. That is, the seam between the end 14Fe and the other end 54eb has a straight seam SM1 and a seam SM2 folded back at both ends of the seam SM1. Both ends in the short direction of the other end 54eb are doubly sewn together by the seam SM1 and the seam SM2. The sewing between the outer force cloth 54A and the upholstery material 14S is similar. By performing such sewing, the force cloth 54 and the trim cover 14 can be firmly sewn together, and the force cloth 54 can function normally when the inflator 53 is activated.

[0039] In the airbag device 5 configured as above, the first region between the contact P1 and the contact P5 in the isolating member 55 is connected to the backside frame 11 by the connecting member 56. On the other hand, the second region between the contact P1 and the first edge 55Y1 and the third region between the contact P5 and the second edge 55Y2 in the isolating member 55 are located away from the connecting member 56. Therefore, when the inflator 53 is activated, the second region and the third region are pressed against the backside frame 11 more strongly than the first region by the inflation pressure of the airbag 52, and a twisting force may be generated in the isolating member 55. Even if such a force is generated, the force can be released by the first recessed portion 61 and the second recessed portion 62, and damage to the isolating member 55 can be prevented. In addition, since the recessed portion 60 is formed in the isolating member 55, the surface pressure of the isolating member 55 can be reduced, and from this viewpoint, damage to the isolating member 55 can also be prevented.

[0040] The isolating member 55 is subjected to a strong force in the area overlapping with the inflator 53 when the inflator 53 is activated, but by arranging the second recessed portion 62 in this area, this force can be effectively released, preventing damage to the isolating member 55. The second recessed portion 62 is formed deeper than the first recessed portion 61 and the third recessed portion 63, so that the force can be released more effectively. The first recessed portion 61 and the third recessed portion 63 are each formed shallow, so that the strength of the isolating member 55 can be maintained.

[0041] 4, for example, even in a configuration in which contacts P2, P3, and P4 are moved to the position of line LA (a configuration in which third recessed portion 63 is omitted), it is possible to prevent damage to isolating member 55 by the action of first recessed portion 61 and second recessed portion 62. However, by providing third recessed portion 63, it is possible to further reduce the surface pressure, and the durability of isolating member 55 can be further improved.

[0042] In addition, the effect of preventing damage to the isolation member 55 by the action of the recess 60 can also be obtained by, for example, a configuration in Figure 4 in which contacts P1, P2, P3, and P4 are moved to the position of line LA (a configuration in which the first recess 61 and the third recess 63 are omitted), or by, for example, a configuration in Figure 4 in which contacts P5, P2, P3, and P4 are moved to the position of line LA (a configuration in which the second recess 62 and the third recess 63 are omitted).

[0043] In the airbag device 5, the isolating member 55 is provided with a recess 60, so that the end surface 11A of the back side frame 11 is exposed from the recess 60. However, since the recess 60 is provided in a range overlapping with the inner strength cloth 54B, the back side frame 11 exposed from the recess 60 does not come into direct contact with the inflator 53. This makes it possible to prevent the performance of the airbag module 51 from deteriorating due to rust.

[0044] In the airbag device 5, the isolating member 55 and the inner force cloth 54B are fixed between the first washer 55a and the second washer 55b. That is, the isolating member 55 and the inner force cloth 54B are fixed at a position close to the inflator 53 disposed at approximately the center in the short side direction of the isolating member 55. As a result, when the inflator 53 is activated, the isolating member 55 is pulled by the inner force cloth 54B at approximately the center in the short side direction. As a result, compared to a case in which a pulling force is applied from the force cloth 54 to the end of the isolating member 55 in the short side direction, twisting of the isolating member 55 around the rotation axis about the virtual straight line L shown in FIG. 3 can be suppressed, and damage to the isolating member 55 can be prevented.

[0045] Moreover, in the airbag device 5, the isolating member 55 is disposed inside the outer circumferential edge of the end face 11A. Therefore, when the isolating member 55 is pressed against the back side frame 11 by the activation of the inflator 53, the isolating member 55 is not pressed against the outer circumferential edge of the end face 11A, and damage to the isolating member 55 can be prevented.

[0046] The airbag device 5 described above can be modified in various ways. For example, one of the bolt 56a inserted through the first washer 55a and the bolt 56a inserted through the second washer 55b may be a locking member that is locked to the end surface 11A. For example, the inflator 53 may be fixed to the end surface 11A by the bolt 56a inserted through the first washer 55a, and a locking member inserted through the second washer 55b may be used to prevent the inflator 53 from rotating around the bolt 56a.

[0047] Although the force cloth 54 is formed in a single belt shape, the force cloth 54 may be configured to be separate from the inner force cloth 54B and the outer force cloth 54A.

[0048] As described above, this specification discloses the following items. Note that, in parentheses, the components corresponding to those in the above-mentioned embodiment are shown, but the present invention is not limited to these.

[0049] (1) an airbag module (airbag module 51); a fabric member (weave cloth 54) surrounding the airbag module; an isolating member (55) fixed to the fabric member and disposed between the fabric member and a frame (back side frame 11) of the vehicle seat (vehicle seat 1), isolating the frame and the fabric member; a connecting member (connecting member 56) that connects the airbag module to the frame via the isolating member, The isolation member is formed to extend in a first direction (direction Y) along the frame, An airbag device, wherein one end edge (edge ​​55X1) of the isolating member in a second direction (direction X) intersecting the first direction has a recess (recess 60) recessed toward the other end edge (edge ​​55X2) in the second direction.

[0050] According to (1), when the airbag module is activated, the force applied to the isolating member by the inflation of the airbag may be uneven, causing a twisting force on the isolating member. Even if such a force is generated, the recessed portion can release the force and prevent damage to the isolating member. As a result, the performance of the airbag module can be fully demonstrated, and the protection performance of the seat occupant of the vehicle seat can be improved.

[0051] (2) An airbag device according to (1), The airbag device, wherein the recessed portion includes a first recessed portion (first recessed portion 61) disposed between a first end edge (first end edge 55Y1) in the first direction of the isolating member and the connecting member.

[0052] According to (2), when a twisting force is applied to the isolating member when the airbag module is activated, the force can be released by the first recessed portion, thereby preventing damage to the isolating member.

[0053] (3) The airbag device according to (2), The airbag device, wherein the recessed portion includes a second recessed portion (second recessed portion 62) disposed between a second end edge (second end edge 55Y2) in the first direction of the isolating member and the connecting member.

[0054] According to (3), when a twisting force is applied to the isolating member when the airbag module is activated, the force can be released by the second recessed portion, thereby preventing damage to the isolating member.

[0055] (4) The airbag device according to (3), The airbag module includes an inflator (inflator 53) connected to the frame by the connecting member, The second recess overlaps with the inflator.

[0056] According to (4), the second recess is located at a position where the impact when the airbag module is activated is strong, and the impact force can be effectively dissipated to prevent damage to the isolating member.

[0057] (5) An airbag device according to (4), The second recessed portion is formed deeper than the first recessed portion.

[0058] According to (5), the impact generated when the airbag module is activated can be effectively dissipated by the second recess, thereby preventing damage to the isolating member.

[0059] (6) An airbag device according to any one of (3) to (5), The airbag device, wherein the recessed portion includes a third recessed portion (third recessed portion 63) disposed between the first recessed portion and the second recessed portion.

[0060] According to (6), the third recess allows the impact generated when the airbag module is activated to be absorbed, thereby preventing damage to the isolating member.

[0061] (7) An airbag device according to any one of (1) to (6), The recessed portion is formed in a range overlapping with the fabric member.

[0062] According to (7), the frame exposed from the recessed portion can be prevented from contacting the airbag module by the cloth member, and deterioration of the performance of the airbag module due to rust can be prevented.

[0063] (8) An airbag device according to any one of (1) to (7), The isolating member includes a plurality of insertion portions (first washers 55a and second washers 55b) arranged in the first direction through which the connecting member is inserted, The airbag device has a fixing region (first fixing region 71) between the fabric member and the separating member provided between the plurality of insertion portions.

[0064] According to (8), when the airbag module is activated, the force with which the isolating member is pulled by the fabric member can be weakened, and damage to the isolating member can be prevented.

[0065] (9) An airbag device according to any one of (1) to (8), The airbag module includes an inflator (inflator 53) connected to the frame by the connecting member, The airbag device includes a fixing region (a first fixing region 71 and a second fixing region 72) between the fabric member and the separating member provided in an area of ​​the separating member that overlaps with the inflator.

[0066] According to (9), when the airbag module is activated, the force with which the isolating member is pulled by the fabric member can be weakened, and damage to the isolating member can be prevented.

[0067] (10) An airbag device according to any one of (1) to (9), The airbag device, wherein the isolating member is disposed inside an outer periphery of an end face (end face 11A) of the frame on the isolating member side when viewed in a direction in which the isolating member and the frame are aligned.

[0068] According to (10), when the airbag module is activated, the isolating member is not pressed against the outer peripheral edge of the frame, so that damage to the isolating member can be prevented. [Explanation of symbols]

[0069] 55X2,55X1,11Ae edge 55Y1 First edge 55Y2 Second edge 1 Vehicle seat P1,P2,P3,P4,P5 contacts 2 Seat cushion 3 Seat back 4 Headrest 5. Airbag device 10 Frames 11,12 Backside frame 11A End face 13 Cushion pad 13a Slit 14 Trim cover 14F,14S Surface material 14Se,14Fe End 51 Airbag module 52 Airbag 53 Inflator 54 Rikifu 54A External force cloth 54B Internal force cloth 54ea one end 54eb Other end 55 Isolation member 55a 1st washer 55b Second washer 56 Connection parts 56a Bolt 56b Nut 60 Recess 61 First recess 62 Second recess 63 Third recess 71 1st fixation area 72 Second fixed area 551 1st straight line section 551e,552e edge 552 2nd straight section SM1, SM2 seam

Claims

1. An airbag module; a fabric member surrounding the airbag module; an isolating member fixed to the fabric member and disposed between the fabric member and a frame of a vehicle seat, the isolating member isolating the frame and the fabric member; a connecting member that connects the airbag module to the frame via the isolating member, The isolation member is formed to extend in a first direction along the frame, the isolating member has an edge at one end in a second direction intersecting the first direction, the edge having a recess that is recessed toward the other end edge in the second direction.

2. 2. The airbag device according to claim 1, The recessed portion includes a first recessed portion formed between a first end edge of the isolation member in the first direction and the connecting member.

3. 3. The airbag device according to claim 2, the recessed portion includes a second recessed portion formed between a second end edge of the isolation member in the first direction and the connecting member.

4. 4. The airbag device according to claim 3, the airbag module includes an inflator connected to the frame by the connecting member; The second recess overlaps with the inflator.

5. 5. The airbag device according to claim 4, The second recessed portion is formed deeper than the first recessed portion.

6. 6. The airbag device according to claim 3, The recessed portion includes a third recessed portion formed between the first recessed portion and the second recessed portion.

7. 6. The airbag device according to claim 1, The recessed portion is formed in a range overlapping with the fabric member.

8. 6. The airbag device according to claim 1, the isolation member includes a plurality of insertion portions aligned in the first direction through which the connection member is inserted, The airbag device, wherein a fastening region between the fabric member and the isolating member is provided between the plurality of insertion portions.

9. 6. The airbag device according to claim 1, the airbag module includes an inflator connected to the frame by the connecting member; a bonding region between the fabric member and the isolation member is provided in a region of the isolation member that overlaps with the inflator,

10. 6. The airbag device according to claim 1, The airbag device, wherein the isolation member is disposed inside an outer periphery of an end face of the frame facing the isolation member when viewed in a direction in which the isolation member and the frame are aligned.

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