Airbag webbing mounting structure

Abstract

To provide an airbag webbing mounting structure that suppresses an increase in the number of components and provides improved assembly workability.SOLUTION: An airbag webbing mounting structure includes: an airbag; a first webbing 6 and a second webbing 7; and a connecting member 5 by which a first hook member 9 of the first webbing 6 and a second hook member 10 of the second webbing 7 are fixed to a back frame. The connecting member 5 is fixed to the back frame and includes: a first hook portion 52 and a second hook portion 54 that are integrally formed; a first stopper portion 52c and a locking claw portion 64 that are configured to stop sliding of the first hook member 9 in a state where the first hook member 9 is engaged with the first hook portion 52; and a second stopper portion 54c and a head portion 63 that are configured to stop sliding of the second hook member 10 when the second hook member 10 is engaged with the second hook portion 54. A locking member 62 including the locking claw portion 64 and the head portion 63 is attached integrally to a base portion 51 via a plate-like portion 61.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a webbing mounting structure for an airbag, and more particularly to a webbing mounting structure for an airbag that fixes an end portion of a webbing, which is a member that regulates the deployment direction of an airbag, to a frame. [Background technology]

[0002] Conventionally, when an airbag installed inside a vehicle seat inflates, a webbing is sometimes provided to smoothly open a breakable portion provided in a seat cover, allowing the airbag to inflate outside the seat. In the vehicle seat described in Patent Document 1, a pair of strip-shaped webbings are arranged to surround the airbag, one end of each of which is attached to the breakable portion of the seat cover and the other end of which is attached to the seat frame via an attachment portion.

[0003] As shown in FIG. 10 , the mounting portion 105 is a member for mounting the ends of a pair of strip-shaped first and second webbing 106 and 107 to the seat frame 131. The mounting portion 105 is flat and has a first locking portion 152, a second locking portion 154, and a fixing portion 155 fixed to the seat frame 131. The first locking portion 152 is a portion that protrudes from the mounting portion 105 and has a substantially L-shaped cross section, and is provided with a turned portion 153 at its tip, so that the end of the first webbing 106 can be locked. The second locking portion 154 is a portion that protrudes from the mounting portion 105 and has a substantially L-shaped cross section, and is provided with a turned portion 156 at its tip, so that the end of the second webbing 107 can be locked. One end of each of the webbing 106 and 107 is sewn to the seat cover, and the other end has locking members 109 and 110. Locking members 109 and 110 are flat plate members each having a roughly J-shaped cross section, and are locked by being moved in a direction perpendicular to the plane of the paper relative to mounting portion 105. To maintain this locked state, pin-like holding members (not shown) are provided that penetrate and support both locking members 109 and 110 to prevent them from moving relative to mounting portion 105 in a direction perpendicular to the plane of the paper. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-84080 Summary of the Invention [Problem to be solved by the invention]

[0005] The mounting portion 105 described in Patent Document 1 required a separate pin-like retaining member to maintain the state when the locking members 109, 110 arranged at the ends of the pair of belt-shaped webbing 106, 107 were locked and prevent the locking members 109, 110 from coming off the mounting portion 105. This resulted in an increase in the number of parts and also hindered the workability during assembly.

[0006] In view of the above problems, an object of the present invention is to provide a webbing mounting structure for an airbag that can be easily assembled while suppressing an increase in the number of parts. [Means for solving the problem]

[0007] A first aspect of the present invention is a webbing mounting structure for an airbag, the webbing mounting structure comprising: an airbag fixed to a seat frame; band-shaped first and second webbings that surround the airbag and guide the inflating airbag to the outside of the seat; and a connecting member that fixes one end of the first webbing and one end of the second webbing to the seat frame, wherein a first hook member having a substantially J-shaped cross section and extending in an in-plane direction of the first webbing is attached to the one end of the first webbing, and a second hook member having a substantially J-shaped cross section and extending in an in-plane direction of the second webbing is attached to the one end of the second webbing, and the connecting member has a substantially planar main body portion and a locking member that can be fitted into a through-hole formed in the main body portion that passes through in the thickness direction and is connected to the main body portion by a plate-shaped portion having an integral hinge portion, and wherein the main body portion is fixed to the seat frame, and a first surface of the main body portion has a substantially L-shaped cross section that extends in one in-plane direction of the first surface. a first hook portion is integrally formed on the connecting member, and a second hook portion having a generally L-shaped cross section and extending in the one direction is integrally formed on a second surface opposite to the first surface; the connecting member is characterized in that the connecting member is integrally formed with: a first stopper portion on the main body portion that causes the first hook member to slide in the one direction relative to the first hook portion, and a first locking portion on the locking member that abuts against one end side of the first hook member to stop the sliding when the first hook member is engaged with the first hook portion; and a second stopper portion on the main body that causes the second hook member to slide in the one direction relative to the second hook portion, and abuts against one end side of the second hook member to stop the sliding when the second hook member is engaged with the second hook portion; and a second locking portion on the locking member that engages against the other end side of the second hook member to stop the sliding in the direction opposite to the one direction.

[0008] According to the first aspect of the present invention, the connecting member is integrally formed with the first hook portion, the second hook portion, the first stopper portion, and the second stopper portion. Furthermore, the first and second locking portions are provided on a locking member that can be fitted into and fixed to a through-hole in the main body portion, and the locking member is connected to the main body portion by a plate-shaped portion having an integral hinge portion and is integrally formed so as to be able to be fitted into the through-hole by being bent at the integral hinge portion. This prevents the first and second hook members engaged with the connecting member from coming off the connecting member without the need for a separate component such as a pin, thereby providing an airbag webbing mounting structure that minimizes the number of parts and improves assembly workability.

[0009] A second aspect of the present invention is characterized in that, in the first aspect, the plate-like portion is formed to extend in the one direction from the main body portion.

[0010] According to the second aspect of the present invention, the plate-like portion is formed to extend in one direction in the same manner as the first hook portion and the second hook portion, which makes it easy to form the connecting member.

[0011] A third aspect of the present invention is characterized in that in the first or second aspect of the present invention, only one integral hinge portion is formed on the plate-like portion.

[0012] According to the third aspect of the present invention, a simpler structure can be achieved than by providing a plurality of integral hinge portions on the plate-like portion and bending it in multiple stages.

[0013] The fourth invention of the present invention is characterized in that, in the first invention, the locking member is formed with a snap-fit ​​type locking claw portion that engages with the outer peripheral edge of the through hole when inserted into the through hole to make it difficult to come out in the direction opposite to the insertion direction, and the direction in which the locking claw portion moves to engage and disengage with respect to the outer peripheral edge of the through hole is perpendicular to the one direction.

[0014] According to the fourth invention, when the locking member is fitted into the through hole and the locking claw portion functions as the first stopper portion or the second stopper portion, even if the first hook member or the second hook member abuts the locking claw portion, a force is unlikely to act in a direction that disengages the locking claw portion from the outer peripheral edge portion of the through hole, making it easier to maintain the locking member fitted into the through hole.

[0015] The fifth invention of the present invention is characterized in that, in the first invention, a raised portion that rises in an out-of-plane direction to guide the first hook member or the second hook member is formed at the end of the main body portion in a direction perpendicular to the one direction, and the engaging member is formed so that when it is inserted into the through hole, the height of the main body portion from the outer peripheral edge of the through hole in the direction opposite to the insertion direction is equal to or greater than the height of at least one of the raised portions.

[0016] According to the fifth invention, the locking member is formed so that when it is fitted into the through hole, the height of the main body portion from the outer edge of the through hole in the direction opposite to the fitting direction is equal to or greater than the height of at least one raised portion, so that the locking member can be easily fitted into the through hole by pressing it with a finger. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a perspective view of an automobile seat to which an airbag webbing mounting structure according to one embodiment of the present invention is applied; [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] 10 is a perspective view showing a state in which a first hook member and a second hook member are engaged with a connecting member. FIG. [Figure 4] FIG. 4 is a side view of FIG. 3. [Figure 5] 5 is a cross-sectional view taken along line VV in FIG. 4, showing a state before the locking member is fitted into the through-hole. [Figure 6] FIG. 5 shows a state in which the locking member is fitted into the through-hole. [Figure 7]7 is a view seen from direction VII in Fig. 4. The solid line indicates the state in which the locking member is fitted into the through-hole, and the two-dot chain line indicates the state before the locking member is fitted into the through-hole. [Figure 8] FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7. [Figure 9] FIG. 8 is a diagram corresponding to FIG. 7 and illustrating another embodiment of the present invention. [Figure 10] FIG. 1 is a cross-sectional view illustrating a conventional technique. DETAILED DESCRIPTION OF THE INVENTION

[0018] 1 to 8 show one embodiment of the present invention. This embodiment is an example in which the present invention is applied to a seat back 3 of an automobile seat 1. In each figure, arrows indicate the directions when the automobile seat 1 is installed in an automobile. In the following description, directions will be described based on these directions. The automobile seat 1 comprises a seat cushion 2 serving as a seating portion, a seat back 3 serving as a backrest, and a headrest 4 serving as a head support portion.

[0019] 1 and 2, the seat back 3 has a back frame 31 forming a skeleton, a back pad 32 which is a cushioning material placed on the back frame 31, and a back cover 33 which is a skin material that covers the back pad 32. Here, the back frame 31 corresponds to the "seat frame" in the claims.

[0020] The back frame 31 has a gate-like shape when viewed from the front. It includes a pair of left and right side frames 31a extending vertically and an upper frame 31f connecting the upper ends of the side frames 31a. Each side frame 31a has a generally U-shaped cross section that opens toward the inside of the seat. It includes a main body 31b, a front plate 31c extending from the front edge of the main body 31b toward the inside of the seat, and a rear plate 31d extending from the rear edge of the main body 31b toward the inside of the seat. As clearly shown in FIG. 2, the rear plate 31d of the left side frame 31a has a larger dimension extending in the left-right direction than the front plate 31c. A bent portion 31e extending toward the front right is formed at the right end, which is the tip of the rear plate 31d toward the inside of the seat. The bent portion 31e is a portion to which a connecting member 5, described below, is attached.

[0021] As shown in FIG. 2 , the back pad 32 is a cushioning material made of urethane foam resin that forms the outer shape of the seat back 3 and elastically supports the body of a seated occupant. The back pad 32 has a main portion 32a in the center in the left-right direction and a pair of side portions 32b located on both the left and right sides of the main portion 32a. The main portion 32a primarily supports the waist and back of the seated occupant from behind, while the side portions 32b primarily support the waist and back of the seated occupant from the sides. A first slit 32c penetrating in the front-rear direction is formed between the main portion 32a and each side portion 32b, and a second slit 32d penetrating in the left-rear direction is formed in the approximate center in the front-rear direction of the left side portion 32b. The first slit 32c is a portion through which the first webbing 6 is passed, and the second slit 32d is a portion through which the second webbing 7 is passed. A thin portion 32e is formed on the front end side of the left side portion 32b. The thin portion 32e is a portion that breaks when the airbag 8 inflates.

[0022] As shown in FIG. 2, the back cover 33 is a member that covers the back pad 32, which is formed into a bag-like shape by sewing together multiple pieces. Each piece is cut from a sheet material formed by laminating a thin urethane slab pad and a thin woven backing fabric, in that order, on the back side of the fabric. The back cover 33 has a main cover portion 33a that covers the main portion 32a from the front, side front cover portions 33b that cover each side portion 32b from the front, and side rear cover portions 33c that cover each side portion 32b from the lateral and rear sides. The seams between the main cover portion 33a and each side front cover portion 33b are first seams 33d, and the seams between each side front cover portion 33b and each side rear cover portion 33c are second seams 33e. The first seams 33d are pulled and fixed to the back frame 31 by a hanging member (not shown). The second seam 33e is formed to be weaker than the first seam 33d, and is the portion that breaks and opens when the airbag 8 inflates.

[0023] 1 and 2, the airbag 8 has a generally rectangular parallelepiped shape that extends vertically when uninflated, and is fixed to the left surface of the main body 31b of the left side frame 31a by means of bolts or the like. When the vehicle receives an impact due to a collision or the like, the airbag 8 is rapidly inflated and deployed by high-pressure gas generated by the inflator.

[0024] As shown in Figure 2, the first webbing 6 and the second webbing 7 are strip-shaped members made of fabric that is less stretchy than the pieces of the back cover 33. The front end 6a of the first webbing 6 and the front end 7a of the second webbing 7 are sewn to the left end of the left side front cover part 33b and the left front end of the side rear cover part 33c by the second seam 33e. A first hook member 9 is attached to the rear end 6b of the first webbing 6 by the third seam 6c. A second hook member 10 is attached to the rear end 7b of the second webbing 7 by the fourth seam 7c. Here, the rear end 6b and the rear end 7b each correspond to "one end" in the claims.

[0025] As shown in FIGS. 3 and 4 , the first hook member 9 is a resin member having a generally J-shaped cross section and extending in the vertical direction. The first hook member 9 has a generally rectangular, flat main body portion 91 and a folded portion 92 that rises from one end of the main body portion 91 and extends opposite the main body portion 91. An inner surface 91a of the main body portion 91 facing the folded portion 92 is flat. An outer surface 91b of the main body portion 91 opposite the inner surface 91a is formed with a connecting surface 91c parallel to the inner surface 91a at an end opposite to the connecting portion with the folded portion 92. A rear end side 6b, which is one end of the first webbing 6, is overlapped on the connecting surface 91c of the main body portion 91 and sewn together by a third seam 6c. An engaging claw 92a extending toward the main body portion 91 is formed at an end of the folded portion 92 opposite to the connecting portion with the main body portion 91. The second hook member 10 has a substantially rectangular, flat main body portion 11 and a folded portion 12 that rises from one end of the main body portion 11 and extends opposite the main body portion 11. An inner surface 11a, which is the surface of the main body portion 11 facing the folded portion 12, is flat. An outer surface 11b of the main body portion 11 opposite the inner surface 11a is formed with a connecting surface 11c parallel to the inner surface 11a at the end opposite the connecting portion with the folded portion 12. A rear end side 7b, which is one end of the second webbing 7, is overlapped on the connecting surface 11c of the main body portion 11 and sewn together by four stitches 7c. An engaging claw 12a extending toward the main body portion 11 is formed at the end of the folded portion 12 opposite the connecting portion with the main body portion 11. The vertical dimension of the first hook member 9 is set to be approximately 1.2 times the vertical dimension of the second hook member 10.

[0026] 2 to 8, the connecting member 5 has a substantially rectangular flat base portion 51, a first hook portion 52 and a first webbing contact portion 53 disposed on the left end side of the base portion 51, and a second hook portion 54 and a frame fixing portion 55 disposed on the right end side of the base portion 51. Here, the base portion 51 corresponds to the "main body" in the claims.

[0027] As shown in FIGS. 3 to 5, the base portion 51 has a first surface S1, which is the rear surface, and a second surface S2, which is the front surface. A protrusion 51a is formed on the upper end of the base portion 51, protruding upward. A plate-like portion 61, which is a thin, rectangular plate when viewed from the front, extends upward from the upper end of the protrusion 51a. A locking member 62, which is approximately square when viewed from the front, is integrally attached to the upper end of the plate-like portion 61. The locking member 62 has a head portion 63, which is square when viewed from the rear, and a pair of locking claw portions 64 extending forward from the left and right ends of the head portion 63. A pair of claws 64a are formed on the tip end of the locking claw portion 64, protruding in directions separating from each other in the left-right direction. The plate-like portion 61 is formed with an integral hinge portion 61a, which is formed by a V-shaped groove extending in the left-right direction and whose cross section opens rearward. A through-hole 51b that is rectangular when viewed from the front and penetrates in the front-rear direction is formed in the base portion 51 below the protrusion 51a. As clearly shown in Figures 5 and 6, when the plate-like portion 61 is folded back in the front-rear direction at the integral hinge portion 61a and a pair of locking claws 64 of the locking member 62 is inserted into the through-hole 51b, the pair of claws 64a engage with the rear outer peripheral edge of the through-hole 51b in a snap-fit ​​manner, and the locking member 62 is fitted and fixed in the through-hole 51b. Figure 6 shows the state in which the locking member 62 is fitted and fixed in the through-hole 51b.

[0028] 3 to 5, a first hook portion 52 having a generally L-shaped cross section is disposed on the left end side of the base portion 51, rising generally rearward from the first surface S1 of the base portion 51 and extending in the left-right direction opposite the first surface S1 of the base portion 51. An engagement claw 52a extending toward the base portion 51 is formed on a tip end portion 52d of the surface of the first hook portion 52 facing the first surface S1 of the base portion 51. An outer surface 52b of the first hook portion 52, which is the surface opposite the base portion 51, is formed as a flat surface parallel to the first surface S1 of the base portion 51. A generally rectangular column-shaped first stopper portion 52c is formed on a lower end side of the outer surface 52b of the first hook portion 52. When the inner surface 91a abuts against the outer surface 52b and the main body 91 of the first hook member 9 slides downward, the first stopper portion 52c abuts against the lower end of the main body 91 to stop the sliding of the first hook member 9. Furthermore, a first webbing abutment portion 53 having an abutment surface 53a that abuts against the first webbing 6 and guides the first webbing 6 is disposed on the left end side of the base portion 51. Here, the up-down direction corresponds to the "one direction" in the claims.

[0029] 3 to 5, a second hook portion 54 having a generally L-shaped cross section is disposed on the right end side of the base portion 51, rising generally forward from the second surface S2 of the base portion 51 and extending in the left-right direction opposite the second surface S2 of the base portion 51. An engagement claw 54a extending toward the base portion 51 is formed on a tip end 54d of the surface of the second hook portion 54 facing the second surface S2 of the base portion 51. An outer surface 54b of the second hook portion 54, which is the surface opposite the base portion 51, is formed as a flat surface parallel to the second surface S2 of the base portion 51. A generally rectangular column-shaped second stopper portion 54c is formed on a lower end side of the outer surface 54b of the second hook portion 54. When the inner surface 11a abuts against the outer surface 54b and the main body portion 11 of the second hook member 10 slides downward, the second stopper portion 54c abuts against the lower end of the main body portion 11 to stop the sliding of the second hook member 10. Furthermore, a frame fixing portion 55 that fixes the connecting member 5 to the bent portion 31e of the back frame 31 is disposed on the right end side of the base portion 51. The frame fixing portion 55 has a rear gripping portion 55a that grips the bent portion 31e of the back frame 31 from the rear side and a front gripping portion 55b that grips it from the front side. The connecting member 5 is fixed to the bent portion 31e of the back frame 31 by moving the connecting member 5 up or down so that the rear gripping portion 55a and the front gripping portion 55b grip the bent portion 31e of the back frame 31.

[0030] 2 to 8, the assembly procedure for the seat back 3 will be described. The airbag 8 and the connecting member 5, in which the locking members 62 are not fitted into the through-holes 51b and fixed as shown in FIGS. 5 and 7, are attached to the back frame 31. Then, the back pad 32 is placed on the back frame 31 in this state, and the back cover 33 is placed on top of it. During this process, the first webbing 6 is passed through the first slit 32c of the back pad 32 from the side of the first hook member 9 and abuts against the abutment surface 53a of the connecting member 5, and the first hook member 9 is engaged with the first hook portion 52 of the connecting member 5. Specifically, when the first hook member 9 is slid from top to bottom with the inner surface 91a of the first hook member 9 abutting against the outer surface 52b of the first hook portion 52, the lower end of the main body portion 91 of the first hook member 9 abuts against the first stopper portion 52c, and the sliding of the first hook member 9 is stopped. Furthermore, in the process of placing the back pad 32 on the back frame 31 and then covering it with the back cover 33, the second webbing 7 is passed through the second slit 32d of the back pad 32 from the side of the second hook member 10 and brought into contact with the rear surface of the frame fixing portion 55 of the connecting member 5, and the second hook member 10 is then engaged with the second hook portion 54 of the connecting member 5. Specifically, when the second hook member 10 is slid from top to bottom with the inner surface 11a of the second hook member 10 in contact with the outer surface 54b of the second hook portion 54, the lower end side of the main body portion 11 of the second hook member 10 comes into contact with the second stopper portion 54c, and the sliding of the second hook member 10 is stopped.

[0031] In this state, as shown in FIGS. 6 and 7 , the plate-like portion 61 is folded back in the front-rear direction at the integral hinge portion 61a, and the pair of locking claws 64 of the locking member 62 is inserted into the through-hole 51b. Then, in this state, when the pressing surface 63a, which is the surface of the head 63 opposite the locking claws 64, is pressed rearward, the pair of claws 64a snap-fit ​​into the rear outer peripheral edge of the through-hole 51b, and the locking member 62 is fitted and fixed in the through-hole 51b. The solid lines in FIGS. 6 and 7 indicate the state in which the locking member 62 is fitted and fixed in the through-hole 51b. At this time, as shown in FIG. 8 , the dimension of the pressing surface 63a from the second surface S2 of the base portion 51 is set to be approximately the same as the front-most portion 53b of the first webbing contact portion 53 when the locking member 62 is fitted and fixed in the through-hole 51b. This makes it easier to press the pressing surface 63a of the locking member 62 backward to fit and fix the locking member 62 into the through-hole 51b. Here, the foremost portion 53b corresponds to "at least one raised portion" in the claims.

[0032] 6 and 7 , when the locking member 62 is fitted and fixed in the through hole 51b, when the first hook member 9 moves upward, the upper end side of the folded portion 92 of the first hook member 9 abuts against the lower side of the pair of locking claw portions 64 of the locking member 62, thereby stopping sliding. That is, the engagement of the first hook member 9 with the first hook portion 52 of the connecting member 5 is maintained. Furthermore, when the locking member 62 is fitted and fixed in the through hole 51b, when the second hook member 10 moves upward, the upper end side of the folded portion 12 of the second hook member 10 abuts against the lower side of the head 63 of the locking member 62, thereby stopping sliding. That is, the engagement of the second hook member 10 with the second hook portion 54 of the connecting member 5 is maintained. At this time, the direction in which the pair of locking claw portions 64 of locking member 62 move to engage and disengage with the outer periphery of through hole 51b is perpendicular to the direction of movement of first hook member 9, so force is unlikely to act in the direction of disengaging locking claw portions 64 from the outer periphery of through hole 51b. This makes it easier to maintain locking member 62 fitted into through hole 51b. Here, locking claw portions 64 and head 63 correspond to the "first locking portion" and "second locking portion" in the claims, respectively.

[0033] The present embodiment configured as described above provides the following advantageous effects. The first hook portion 52, the second hook portion 54, the first stopper portion 52c, and the second stopper portion 54c are integrally formed with the connecting member 5. The connecting member 5 also has a locking member 62, which has a locking claw portion 64 and a head portion 63, and is connected to the connecting member 5 by a plate-like portion 61. By fitting the locking member 62 into the through-hole 51b, the locking member 62 functions as a substitute for a separate member such as a pin. This prevents the first hook member 9 and the second hook member 10, which are engaged with the connecting member 5, from coming off the connecting member 5 without the need for a separate member such as a pin, thereby providing an airbag webbing mounting structure that minimizes the number of parts and improves assembly workability.

[0034] Furthermore, the plate-shaped portion 61 is formed to extend upward in the same manner as the first hook portion 52 and the second hook portion 54, which facilitates molding of the connecting member 5. Furthermore, since only one integral hinge portion 61a is formed on the plate-shaped portion 61, a simpler structure can be achieved than if multiple integral hinge portions were provided on the plate-shaped portion 61 and it were bent in multiple stages.

[0035] Furthermore, locking member 62 is formed with a pair of snap-fit ​​locking claws 64 to prevent it from coming out when fitted into through hole 51b, and the direction in which the pair of locking claws 64 move to engage and disengage with respect to the outer periphery of through hole 51b is perpendicular to the direction of movement of first hook member 9. As a result, when first hook member 9 moves upward with locking member 62 fitted into through hole 51b, the upper end side of first hook member 9 abuts against the lower side of the pair of locking claws 64, preventing it from sliding. At this time, a force is unlikely to act in the direction of disengaging locking claws 64 from the outer periphery of through hole 51b, making it easier to maintain locking member 62 fitted into through hole 51b.

[0036] In addition, when the locking member 62 is fitted into the through-hole 51b, the dimension of the pressing surface 63a from the first surface S1 of the base portion 51 is set to be approximately the same as the dimension from the first surface S1 of the front-most portion 53b of the first webbing contact portion 53. This makes it easier to press the pressing surface 63a with a finger to fit the locking member 62 into the through-hole 51b.

[0037] FIG. 9 shows another embodiment of the present invention. The difference from the first embodiment is the extension direction of a plate-like portion 65, which is a thin, rectangular plate when viewed from the front and connects a locking member 62 to a base portion 51 of a connecting member 5. Configurations common to the first embodiment are given the same reference numerals and will not be described again. Specifically, the plate-like portion 65 extends in the left-right direction perpendicular to the up-down direction and is formed integrally with the base portion 51 of the connecting member 5. A locking member 62 is attached integrally to the left end of the plate-like portion 65. The plate-like portion 65 is formed with an integral hinge portion 65a formed by a V-shaped groove that extends in the up-down direction and has a cross section that opens rearward. When the plate-shaped portion 65 is folded back in the left-right direction at the integral hinge portion 65a and the pair of locking claw portions 64 of the locking member 62 is inserted into the through hole 51b, the pair of claws 64a engage with the rear outer peripheral edge portion of the through hole 51b in a snap-fit ​​manner, and the locking member 62 is fitted into and fixed in the through hole 51b. The function of the locking member 62 fitted into the through hole 51b is the same as in the first embodiment, but because the direction in which the locking claw portions 64 move to engage and disengage with respect to the outer peripheral edge portion of the through hole 51b is the same as the direction in which the first hook member 9 moves, it is more difficult than in the first embodiment for the locking member 62 to maintain a state in which it is fitted into the through hole 51b.

[0038] Although specific embodiments have been described above, the present invention is not limited to those external appearances and configurations, and various modifications, additions, and deletions are possible within the scope of the present invention. For example, the following can be mentioned.

[0039] 1. In the above embodiment, the airbag 8 is configured to be disposed on the left side frame 31a, but the airbag 8 may be disposed on each of the left and right side frames 31a. In this case, the first webbing 6, the second webbing 7, the first hook member 9, the second hook member 10, and the connecting member 5 are disposed on the left and right side frames 31a in a symmetrical shape.

[0040] 2. In the above embodiment, the first stopper portion 52c is disposed on the first hook portion 52, and the second stopper portion 54c is disposed on the second hook portion 54. However, this is not limiting, and the first stopper portion 52c and / or the second stopper portion 54c may be disposed on the base portion 51.

[0041] 3. In the above embodiment, the locking member 62 is configured to have a head 63 and a pair of locking claws 64. However, this is not limited to this, and the locking member 62 may be configured as a columnar or rectangular pillar, or as a cylindrical or rectangular tubular member. Furthermore, the side of the columnar or cylindrical member may be provided with claws that engage with the outer periphery of the snap-fit ​​through-hole 51b.

[0042] 4. In the above embodiment, only one integral hinge portion 61a, 65a is formed on the plate-shaped portion 61, 65. However, this is not limited to this, and multiple integral hinge portions may be formed. If multiple integral hinge portions are formed, it becomes easier to bend the plate-shaped portion 61, 65 and fit the locking member 62 into the through hole 51b.

[0043] 5. In the above embodiment, the present invention is applied to the seat back 3 of the automobile seat 1, but it can also be applied to the seat cushion 2. Furthermore, it may also be applied to seats installed in airplanes, ships, trains, etc. [Explanation of symbols]

[0044] 1. Car seats 3 Seat back 5 Connecting members 6 1st Rikifu 6b Rear end side (one end side) 7 2nd Rikifu 7b Rear end side (one end side) 8 Airbags 9. First hook member 10 second hook member 31 Back frame (seat frame) 51 Base part (main body part) 51b Through hole 52 First hook part 52c First stopper part 53 Webbing contact part 53b Front (at least one raised part) 54 Second hook part 54c Second stopper part 61a Integral hinge part 61 Plate-shaped part 62 Locking member 63 Head (second locking part) 63a Pressing surface 64 Locking claw portion (first locking portion) 65 Plate-shaped part 65a Integral hinge part S1 page 1 S2 side 2

Claims

1. An airbag webbing mounting structure, an airbag fixed to a seat frame; strip-shaped first and second webbings surrounding the airbag and guiding the inflating airbag to an exterior of the seat; and connecting members fixing one end side of the first webbing and one end side of the second webbing to the seat frame, a first hook member having a substantially J-shaped cross section and extending in an in-plane direction of the first webbing is attached to the one end side of the first webbing, and a second hook member having a substantially J-shaped cross section and extending in an in-plane direction of the second webbing is attached to the one end side of the second webbing, the connecting member has a substantially planar main body portion and a locking member that can be fitted into a through-hole formed in the main body portion and penetrates the main body portion in a thickness direction, and is connected to the main body portion by a plate-like portion having an integral hinge portion, and the main body portion is fixed to the seat frame; a first hook portion having a substantially L-shaped cross section and extending in one direction within the plane of the first surface is integrally formed on a first surface of the main body portion, and a second hook portion having a substantially L-shaped cross section and extending in the one direction is integrally formed on a second surface opposite to the first surface, a first stopper portion on the main body portion that abuts against one end side of the first hook member to stop the sliding when the first hook member is engaged with the first hook member in the one direction relative to the first hook portion, and a first locking portion on the locking member that locks against the other end side of the first hook member to stop movement in the direction opposite to the one direction; and a second stopper portion on the main body portion that abuts against one end side of the second hook member to stop the sliding when the second hook member is engaged with the second hook member in the one direction relative to the second hook portion, and a second locking portion on the locking member that locks against the other end side of the second hook member to stop movement in the direction opposite to the one direction, which are integrally formed on the connecting member.

2. In claim 1, The plate-like portion is formed to extend in the one direction from the main body portion.

3. In claim 1 or claim 2, The integral hinge portion is formed on the plate portion only once.

4. In claim 1, The locking member is formed with a snap-fit ​​type locking claw portion that engages with the outer peripheral edge of the through hole when fitted into the through hole to make it difficult to come out in the direction opposite to the fitting direction, The direction in which the engaging claw portion moves to engage and disengage with respect to the outer peripheral edge of the through hole is perpendicular to the one direction.

5. In claim 1, a raised portion that is raised in an out-of-plane direction and that guides the first hook member or the second hook member is formed at an end portion of the main body in a direction perpendicular to the one direction, The retaining member is formed so that when fitted into the through hole, the height of the main body portion from the outer peripheral edge of the through hole in the direction opposite to the fitting direction is equal to or greater than the height of at least one of the raised portions.

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