Airbag system

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 Art

[0002] Patent Document 1 describes an airbag system including a fastener assembly connecting an airbag module to a seat frame, a force cloth 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 substantially matching the first shape proximal to the airbag module and the force cloth.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The technology of the present disclosure aims to provide an airbag device capable of enhancing the protection performance of a seated person on a vehicle seat.

Means for Solving the Problems

[0005] An airbag device according to one aspect of the technology of the present disclosure comprises an airbag module, a fabric member surrounding the airbag module, an isolation member fixed to the fabric member and positioned between the fabric member and the frame of a vehicle seat to isolate the frame from the fabric member, and a connecting member connecting the airbag module to the frame via the isolation member, wherein the isolation member is formed extending in a first direction along the frame, and one end edge of the isolation member in a second direction intersecting the first direction has a recess formed therein that is recessed toward the other end edge in the second direction. [Effects of the Invention]

[0006] The technology disclosed herein can enhance the protective performance of seat occupants in vehicle seats. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is an external perspective view showing a schematic configuration of a vehicle seat 1 including an airbag device 5, which is one embodiment of the technology of this disclosure. [Figure 2] Figure 2 is a schematic cross-sectional view of the left side of the seatback 3 where the airbag device 5 is installed. [Figure 3] Figure 3 is a schematic diagram of the airbag system 5 viewed from the left. [Figure 4] Figure 4 is a plan view of the isolation member 55. [Figure 5] Figure 5 is a schematic diagram illustrating the suture state between the internal reinforcement fabric 54B and the outer layer material 14F. [Modes for carrying out the invention]

[0008] Figure 1 is an external perspective view showing a schematic configuration of a vehicle seat 1 including an airbag device 5, which is one embodiment of the technology of this disclosure. In this specification, vehicles include automobiles, aircraft, trains, or ships. In the following description, the direction in front of a sitter sitting in the vehicle seat 1 shown in Figure 1 in a normal posture is described as the forward direction Fr, the opposite direction of the forward direction Fr is described as the rear direction Rr, and these together are referred to as the front-rear direction. Also, when viewing a sitter from behind, the direction to the right of the sitter is described as the right direction R, and the direction to the left of the sitter is described as the left direction L, and these together are referred to as the left-right direction. The left-right direction is synonymous with the seat width direction of the vehicle seat 1. Also, the direction perpendicular to the front-rear direction and the left-right direction, from the headrest 4 toward the seat surface side, is described as the downward direction D, the opposite direction of the downward direction D is described as the upward direction U, and these together are referred to as the up-down direction. The up-down direction is synonymous with the height direction of the vehicle seat 1.

[0009] The vehicle seat 1 comprises a seat cushion 2 that supports the occupant's buttocks and thighs, a seat back 3 that supports the occupant's waist and back, a headrest 4 that supports the occupant's head, and an airbag device 5 for protecting the occupant.

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

[0011] The seat back 3 has a frame 10 that forms the skeleton of the seat back 3. The frame 10 includes a pair of back side frames 11 and 12 that are spaced apart in the left-right direction and extend in the vertical 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 surface material such as leather, woven fabric, or non-woven fabric.

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

[0013] Figure 2 is a schematic cross-sectional view of the left side of the seat back 3 where the airbag device 5 is installed. The airbag device 5 comprises an airbag module 51, a single strip-shaped reinforcing cloth 54 which constitutes a fabric member surrounding the airbag module 51 in the example shown, an isolation member 55 which is positioned between the reinforcing cloth 54 and the backside frame 11 to separate the backside frame 11 and the reinforcing cloth 54, and a connecting member 56 which connects the airbag module 51 to the backside frame 11 via the isolation member 55. In the example shown in Figure 2, the connecting member 56 is composed of fasteners such as a bolt 56a and a nut 56b. The airbag device 5 is positioned 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 comprises an airbag 52 and an inflator 53 for inflating and deploying the airbag 52. In the example shown in Figure 2, the inflator 53 is a cylindrical shape extending vertically and is connected to the left side surface (end face 11A, described later) of the backside frame 11 by a connecting member 56. The inflator 53 may also be disc-shaped.

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

[0016] The trim cover 14 has a rupture portion EX that serves as the inflation outlet of the airbag 52. The rupture portion EX is constituted by a stitched portion where a plurality of skin materials are stitched together. In the example of FIG. 2, the rupture portion EX is constituted by the stitched portion between the skin material 14F covering the front surface of the seat back 3 and the skin material 14S covering the side surface of the seat back 3, and is disposed on the front side of the airbag module 51. A slit 13a leading to the rupture portion EX is formed in the cushion pad 13. The inflating and deploying airbag 52 reaches the rupture portion EX through the slit 13a and ruptures the rupture portion EX by the inflation pressure. The airbag 52 bulges out of the seat back 3 through the ruptured rupture portion EX.

[0017] The force cloth 54 is provided to guide the inflating and deploying airbag 52 to the rupture portion EX. The force cloth 54 is made of a material with poor stretchability, and is, for example, a woven fabric or a non-woven fabric using polyester-based fibers or polyamide-based fibers.

[0018] One end portion 54ea in the longitudinal direction of the force cloth 54 is stitched to the end portion 14Se near the rupture portion EX of the skin material 14S. The other end portion 54eb in the longitudinal direction of the force cloth 54 is stitched to the end portion 14Fe near the rupture portion EX of the skin material 14F. Thereby, the force cloth 54 forms an annular accommodation space together with the trim cover 14, and a part of the airbag module 51 is accommodated in the accommodation space, and the airbag module 51 is surrounded.

[0019] The force cloth 54 is folded back behind the airbag module 51. Hereinafter, among the force cloth 54, the portion from the folded-back portion to the one end portion 54ea is referred to as an external force cloth 54A, and the portion from the folded-back portion to the other end portion 54eb is referred to as an internal force cloth 54B.

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

[0021] The isolation member 55 is in the shape of a plate whose thickness direction substantially coincides with the left - right direction, and has an elongated shape extending along the back - side frame 11. The isolation 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, or flame retardancy, etc., the isolation member 55 is preferably formed of PP.

[0022] In FIG. 3, the direction in which the isolation member 55 extends (the longitudinal direction of the isolation member 55) is shown as the direction Y, and the direction intersecting (orthogonal in the example of the figure) with the direction Y (the short - hand direction of the isolation member 55 or the thickness direction of the seat - back 3) is shown as the direction X. Among the direction Y, the direction from the seat - cushion 2 toward the head - rest 4 is shown as the direction Y1, and the reverse direction of the direction Y1 is shown as the direction Y2. Among the direction X, the direction from the front surface to the back surface of the seat - back 3 is shown as the direction X1, and the reverse direction of the direction X1 is shown as the direction X2.

[0023] The back - side frame 11 has a shape that extends from the lower side to the upper side and is inclined backward, and includes the end - face 11A on the side of the isolation member 55. The end - face 11A is a flat surface (a surface perpendicular to the left - right direction). The isolation member 55 is arranged inside the outer - peripheral edge of the end - face 11A, and is configured to be sandwiched between the end - face 11A and the internal - force cloth 54B.

[0024] The isolation member 55 is arranged at an eccentric position on the direction X2 side at the end - face 11A. As shown in FIG. 3, the edge 55X2 on the direction X2 side of the isolation member 55 has a shape along the edge 11Ae on the direction X2 side of the end - face 11A of the back - side frame 11, and is arranged in close proximity to the edge 11Ae. The edge 11Ae and the edge 55X2 may overlap when viewed in the left - right direction.

[0025] The isolation member 55 has two holes aligned along its longitudinal direction, approximately in the center of its longitudinal direction. A ring-shaped first washer 55a is provided in the hole on the direction Y1, and a ring-shaped second washer 55b is provided in the hole on the direction Y2. Preferably, the first washer 55a and the second washer 55b are integrally molded with the isolation member 55.

[0026] In the internal reinforcement cloth 54B, holes are formed at positions that overlap with the first washer 55a and the second washer 55b, respectively. In the end face 11A of the backside frame 11, holes are formed at positions that overlap with the first washer 55a and the second washer 55b, respectively. As shown in Figure 2, two bolts 56a fixed to the inflator 53 pass through the holes in the internal reinforcement cloth 54B and are inserted through the first washer 55a and the second washer 55b, respectively. Furthermore, the tips of each bolt 56a are inserted into holes provided in the end face 11A and fastened from the back side of the end face 11A with nuts 56b, thereby connecting the inflator 53 to the end face 11A of the backside frame 11A. The first washer 55a and the second washer 55b each constitute an insertion portion through which the bolts 56a, which serve as connecting members 56, are inserted.

[0027] As shown in Figure 3, the internal reinforcement fabric 54B overlaps a portion of the isolation member 55 and is fixed to the isolation member 55 in the overlapping area. In the example in Figure 3, a first fixing area 71 is provided in the region of the isolation member 55 sandwiched between the first washer 55a and the second washer 55b, for fixing the isolation member 55 and the internal reinforcement fabric 54B. Also in the example in Figure 3, a second fixing area 72 is provided in the region of the isolation member 55 on the Y2 side of the second washer 55b, for fixing the isolation member 55 and the internal reinforcement fabric 54B. The first fixing area 71 and the second fixing area 72 are areas fixed by stitching, welding, bonding, riveting, or screws, respectively. The first fixing area 71 and the second fixing area 72 are preferably formed in a straight line, as shown in Figure 3.

[0028] The first fixing region 71 is preferably located as close as possible to a virtual straight line L connecting the centers of the first washer 55a and the second washer 55b. As shown in Figure 3, the first fixing region 71 is preferably extending along the virtual straight line L, and more preferably located on the virtual straight line L. The second fixing region 72 is preferably located so that at least a portion of it overlaps with the virtual straight line L, as shown in Figure 3. The second fixing region 72 may be provided so as to extend along the virtual straight line L and be located on the virtual straight line L. The length of the first fixing region 71 is preferably greater than the length of the second fixing region 72.

[0029] As shown in Figure 3, the entirety of the first fixing region 71 is located in an area that overlaps with the inflator 53. Furthermore, a portion of the second fixing region 72 is located in an area that overlaps with the inflator 53. The entirety of the second fixing region 72 may also be located in an area that overlaps with the inflator 53.

[0030] As shown in Figures 3 and 4, a recessed portion 60 is formed on the edge 55X1 of the isolation member 55 on the direction X1 side, and recessed on the edge 55X2 of the isolation member 55 on the direction X2 side. As shown in Figure 3, the recessed portion 60 is formed in an area that overlaps with the internal reinforcement fabric 54B.

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

[0032] The first straight section 551 is located on the X1 side of the recessed section 60 and is a straight line extending in the Y direction. The second straight section 552 is adjacent to the Y2 side of the recessed section 60, is located on the X1 side of the recessed section 60 and is a straight line extending in the Y direction. The first straight section 551 and the second straight section 552 do not necessarily have to be straight; they may be curved.

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

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

[0035] Contact point P1 is located in direction X1, closer to the center of the first washer 55a than in direction X. Contact point P2 is located in direction X1, closer to contact point P1 than in direction X. Contact point P3 is located in direction X2, closer to contact point P2 than in direction X, and closer to the virtual line L than in direction X1. Contact point P4 is located in direction X1, closer to contact point P3 than in direction X. Contact point P5 is located in direction X2, closer to contact point P4 than in direction X, and closer to contact point P1 than in direction X1. It is preferable that contact point P5 is located in direction X2, closer to the center of the second washer 55b.

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

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

[0038] Figure 5 is a schematic diagram illustrating the stitching between the internal reinforcing fabric 54B and the outer material 14F. As described above, the end 14Fe of the outer material 14F and the other end 54eb of the internal reinforcing fabric 54B are stitched together. The end 14Fe and the other end 54eb are folded and stitched at both ends of the other end 54eb in the short direction. In other words, the stitching between the end 14Fe and the other end 54eb has a straight seam SM1 and a folded seam SM2 at both ends of seam SM1. Both ends of the other end 54eb in the short direction are double-stitched by seam SM1 and seam SM2. The same applies to the stitching between the external reinforcing fabric 54A and the outer material 14S. By performing such stitching, the reinforcing fabric 54 and the trim cover 14 can be firmly stitched together, and the reinforcing fabric 54 can function normally when the inflator 53 is operated.

[0039] In the airbag device 5 configured as described above, the first region of the isolation member 55 between contact P1 and contact P5 is connected to the backside frame 11 by a connecting member 56. On the other hand, the second region of the isolation member 55 between contact P1 and the first edge 55Y1, and the third region between contact P5 and the second edge 55Y2, are located away from the connecting member 56. Therefore, when the inflator 53 is activated, the inflation pressure of the airbag 52 causes the second and third regions to be pressed more strongly against the backside frame 11 than the first region, potentially generating a torsional force in the isolation member 55. Even if such a force is generated, the first recess 61 and the second recess 62 can release the force, preventing damage to the isolation member 55. Furthermore, the formation of the recess 60 in the isolation member 55 reduces the surface pressure on the isolation member 55, which also helps prevent damage to the isolation member 55.

[0040] The isolation member 55 will be subjected to strong forces when the inflator 53 operates in the area where it overlaps with the inflator 53. However, the placement of the second recess 62 in this area allows this force to be effectively dissipated, preventing damage to the isolation member 55. The second recess 62 is formed deeper than the first recess 61 and the third recess 63, allowing it to dissipate the force more effectively. The first recess 61 and the third recess 63 are formed shallowly, which helps maintain the strength of the isolation member 55.

[0041] In Figure 4, for example, even in a configuration where contacts P2, P3, and P4 are moved to the position of line LA (a configuration in which the third recess 63 is omitted), it is still possible to prevent damage to the isolation member 55 through the action of the first recess 61 and the second recess 62. However, by providing the third recess 63, it is possible to further reduce the surface pressure, thereby increasing the durability of the isolation member 55.

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

[0043] In the airbag device 5, a recess 60 is provided in the isolation member 55, so that the end face 11A of the backside frame 11 is exposed from this recess 60. However, since the recess 60 is provided in an area that overlaps with the internal reinforcement fabric 54B, the backside frame 11 exposed from the recess 60 does not come into direct contact with the inflator 53. This prevents the performance of the airbag module 51 from deteriorating due to rust.

[0044] Furthermore, in the airbag device 5, the isolation member 55 and the internal force fabric 54B are fixed between the first washer 55a and the second washer 55b. In other words, the isolation member 55 and the internal force fabric 54B are fixed at a position close to the inflator 53, which is located approximately in the center of the short side of the isolation member 55. As a result, when the inflator 53 is activated, the isolation member 55 is pulled by the internal force fabric 54B approximately in the center of its short side. Compared to the case where a pulling force from the force fabric 54 is applied to the short side end of the isolation member 55, twisting of the isolation member 55 around the rotation axis with the virtual straight line L shown in Figure 3 as the rotation axis can be suppressed, and damage to the isolation member 55 can be prevented.

[0045] Furthermore, in the airbag device 5, the isolation member 55 is positioned inward from the outer edge of the end face 11A. Therefore, when the isolation member 55 is pressed against the backside frame 11 by the operation of the inflator 53, the isolation member 55 is not pressed against the outer edge of the end face 11A, thus preventing damage to the isolation member 55.

[0046] The airbag device 5 described above can be modified in various ways. For example, either the bolt 56a inserted through the first washer 55a or the bolt 56a inserted through the second washer 55b may be a locking member that engages with the end face 11A. For example, the inflator 53 may be fixed to the end face 11A with the bolt 56a inserted through the first washer 55a, and the locking member inserted through the second washer 55b may be used to prevent the inflator 53 from rotating around the bolt 56a as an axis.

[0047] The reinforcing fabric 54 is a single strip, but it may also be configured with separate inner reinforcing fabric 54B and outer reinforcing fabric 54A.

[0048] As described above, the following matters are disclosed in this specification. Note that the components etc. in parentheses indicate those corresponding to the embodiments described above, but are not limited thereto.

[0049] (1) Airbag module (airbag module 51), The above airbag module is surrounded by a fabric member (reinforcement fabric 54), A separating member (separating member 55) is fixed to the above-mentioned fabric member and positioned between the above-mentioned fabric member and the frame (backside frame 11) of the vehicle seat (vehicle seat 1), separating the frame and the above-mentioned fabric member. The system includes a connecting member (connecting member 56) that connects the airbag module to the frame via the isolation member, The above-mentioned isolation member is formed to extend in a first direction (direction Y) along the frame, An airbag device in which one end edge (end edge 55X1) of the above-mentioned isolation member in a second direction (direction X) intersecting the above-mentioned first direction has a recessed portion (recessed portion 60) formed on the other end edge (end edge 55X2) in the second direction.

[0050] According to (1), when the airbag module is activated, the force applied to the isolation member by the inflation of the airbag may be uneven, potentially causing a torsional force to be generated in the isolation member. Even if such a force is generated, the recessed portion can release the force, preventing damage to the isolation member. As a result, the performance of the airbag module can be fully utilized, and the protective performance of the seat occupant in the vehicle can be enhanced.

[0051] (2) (1) The airbag device described above, The airbag device includes a first recess (first recess 61) positioned between the first end edge (first end edge 55Y1) of the isolation member in the first direction and the connecting member.

[0052] According to (2), when the airbag module is activated and a torsional force is applied to the isolation member, the first recess can release that force, thereby preventing damage to the isolation member.

[0053] (3) (2) The airbag device described above, The airbag device includes a second recess (second recess 62) positioned between the second end edge (second end edge 55Y2) of the isolation member in the first direction and the connecting member.

[0054] According to (3), when the airbag module is activated and a torsional force is applied to the isolation member, the second recess can release that force, thereby preventing damage to the isolation member.

[0055] (4) (3) The airbag device described above, The above airbag module includes an inflator (inflator 53) connected to the frame by the above connecting member, The second recessed area described above is an airbag device that overlaps with the inflator described above.

[0056] According to (4), the presence of a second recess at a location where the impact is strongest when the airbag module deploys effectively dissipates the impact force and prevents damage to the isolation member.

[0057] (5) (4) The airbag device described above, An airbag device wherein the second recess described above is formed to be deeper than the first recess described above.

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

[0059] (6) An airbag device as described in any of (3) to (5), The airbag device includes a third recess (third recess 63) positioned between the first recess and the second recess.

[0060] According to (6), the impact when the airbag module is deployed can be dissipated by the third recess, preventing damage to the isolation member.

[0061] (7) An airbag device as described in any of (1) to (6), The above-mentioned recessed portion is formed in an area that overlaps with the above-mentioned fabric member, and is part of the airbag device.

[0062] According to (7), the fabric material can prevent the frame exposed from the recess from coming into contact with the airbag module, thereby preventing a decrease in the performance of the airbag module due to rust.

[0063] (8) An airbag device as described in any of (1) to (7), The above-mentioned isolation member includes a plurality of insertion portions (first washer 55a and second washer 55b) arranged in the first direction through which the connecting member is inserted. An airbag device in which a fixing region (first fixing region 71) between the fabric member and the isolation member is provided between the multiple insertion portions described above.

[0064] According to (8), when the airbag module is activated, the force pulling the isolation member by the fabric member can be reduced, and damage to the isolation member can be prevented.

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

[0066] According to (9), when the airbag module is activated, the force pulling the isolation member by the fabric member can be reduced, and damage to the isolation member can be prevented.

[0067] (10) An airbag device as described in any of (1) to (9), The above-mentioned isolation member is positioned on the inner side of the outer peripheral edge of the end face (end face 11A) of the frame on the side of the isolation member when viewed in the direction in which the isolation member and the frame are aligned, in an airbag device.

[0068] According to (10), when the airbag module is deployed, the isolation member is not pressed against the outer edge of the frame, thus preventing damage to the isolation member. [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 cushions 3 Seatback 4 headrests 5. Airbag system 10 frames 11,12 Backside frame 11A End face 13 Cushion pads 13a Slit 14 Trim Cover 14F,14S Surface material 14Se,14Fe end 51 Airbag Module 52 airbags 53 Inflator 54 Rikifu 54A External force cloth 54B Internal force cloth 54ea one end 54eb Other end 55 Isolation member 55a First Washer 55b Second Washer 56 Connecting Member 56a Bolt 56b Nut 60 Recessed area 61 First depression 62 Second depression 63 Third depression 71 1st fixation area 72 Second fixation area 551 1st straight section 551e,552e edge 552 2nd straight section SM1, SM2 seams

Claims

1. Airbag module and A fabric member surrounding the airbag module, A separator member is fixed to the fabric member and positioned between the fabric member and the frame of the vehicle seat, separating the frame and the fabric member. The system includes a connecting member that connects the airbag module to the frame via the isolation member, The isolation member is formed to extend in a first direction along the frame, An airbag device in which one end edge of the isolation member in a second direction intersecting the first direction has a recess formed on the other end edge in the second direction.

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

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

4. An airbag device according to claim 3, The airbag module includes an inflator connected to the frame by the connecting member, The second recessed portion is an airbag device that overlaps with the inflator.

5. An airbag device according to claim 4, An airbag device wherein the second recess is formed to be deeper than the first recess.

6. An airbag device according to any one of claims 3 to 5, The airbag device wherein the recessed portion includes a third recessed portion formed between the first recessed portion and the second recessed portion.

7. An airbag device according to any one of claims 1 to 5, The aforementioned recess is formed in an area that overlaps with the fabric member, in an airbag device.

8. An airbag device according to any one of claims 1 to 5, The isolation member includes a plurality of insertion portions arranged in the first direction through which the connecting member is inserted, An airbag device in which a fixing area between the fabric member and the isolation member is provided between the plurality of insertion portions.

9. An airbag device according to any one of claims 1 to 5, The airbag module includes an inflator connected to the frame by the connecting member, An airbag device in which a fixing region between the fabric member and the isolation member is provided in the area of ​​the isolation member that overlaps with the inflator.

10. An airbag device according to any one of claims 1 to 5, An airbag device wherein the isolation member is positioned on the inner side of the outer peripheral edge of the end face of the frame on the side of the isolation member when viewed in the direction in which the isolation member and the frame are aligned.

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