Vehicle seats

Abstract

To provide a vehicular seat which can facilitate mounting of webbing for guiding a deployment direction of an air bag.SOLUTION: A seat S is a vehicular seat provided with an air bag module 10 including a bag body 11. The seat S includes: a side frame 20 on which the air bag module 10 is mounted; a first webbing 30 which guides a deployment direction of the bag body 11; and a webbing bracket 40 which is mounted in the side frame 20 and is for fixing the first webbing 30. The first webbing 30 has a first lock section 31 formed into a ring-shape. The webbing bracket 40 has a first slit 41 to mount the first webbing 30. The first slit 41 has a first opening 41A provided at a first edge 40B of the webbing bracket 40 and a first holding section 41B for holding the first lock section 31 of the first webbing 30 passed through the first opening 41A.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a vehicle seat, and particularly to a vehicle seat provided with an airbag.

Background Art

[0002] There is known a vehicle seat provided with a side airbag device that protects an occupant by inflating and deploying an airbag provided on a side portion of the vehicle seat during a side collision of the vehicle (see, for example, Patent Document 1 below).

[0003] In the vehicle seat described in Patent Document 1, a hole is formed in a bracket fixed to a side frame, and after passing an end portion of a force cloth through the hole, the end portion of the force cloth is sewn to attach the force cloth to the bracket.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the above prior art, since it is necessary to sew the force cloth after passing it through the hole in the bracket, the labor for attaching the force cloth to the bracket is large.

[0006] The present invention has been made in view of the above problems, and an object thereof is to provide a vehicle seat that can facilitate the attachment of a force cloth that guides the deployment direction of an airbag. Another objective is to provide a vehicle seat that can improve the rigidity of the bracket, thereby suppressing the strong force applied to the bracket when the airbag deploys.

Means for Solving the Problems

[0007] The above problem is solved by the vehicle seat according to the present invention, which comprises a vehicle seat having an airbag module including a bag, wherein the airbag module is attached to a frame member and the deployment direction of the bag is guided The power Cloth and attached to the frame member, front Writing ability It includes a fabric bracket for securing the fabric. ,before The writing force cloth bracket is front Writing ability To attach the fabric No S Lit and , a stepped portion that slopes in the width direction of the vehicle seat, Having The stepped portion is arranged to extend in a direction perpendicular to the longitudinal direction of the slit. This will resolve the issue.

[0008] According to the above vehicle seat, the fabric bracket Since a stepped portion is positioned in a direction perpendicular to the length direction of the slit, the tensile force of the reinforcing fabric can be efficiently transmitted. This prevents the tensile force of the reinforcing fabric from being strongly applied to the reinforcing fabric bracket.

[0009] In the above-mentioned vehicle seats, The reinforcing fabric bracket has a first fastening portion and a second fastening portion for fastening the reinforcing fabric bracket to the frame member, and the slit may include a portion extending laterally and be positioned between the first fastening portion and the stepped portion.

[0010] In the above-mentioned vehicle seats, The slit has an opening provided at the edge of the reinforcing fabric bracket and a holding portion that holds the reinforcing fabric passed through the opening, and the stepped portion may extend in a direction perpendicular to the extending direction of the holding portion. By doing this, This makes it easier to attach the reinforcement fabric.

[0011] In the above-mentioned vehicle seats, The second fastening portion is preferably positioned below the retaining portion.

[0012] In the above-mentioned vehicle seats, The reinforcing fabric bracket may have a flange portion formed along the holding portion. By doing this, The rigidity of the reinforcing fabric bracket can be improved. This allows the reinforcing fabric bracket to stably hold the reinforcing fabric.

[0013] In the above-mentioned vehicle seats, The flange portion may be longer than the retaining portion. By doing this, The rigidity of the reinforcing fabric bracket can be further improved. This allows the reinforcing fabric bracket to hold the reinforcing fabric more stably.

[0014] In the above-mentioned vehicle seat, record keeping Mochibe, Writing ability It is preferable that it be formed in a straight line that is longer than the width of the fabric. By doing this ,force Without creating wrinkles at the edges of the fabric, the fabric bracket to force It can hold the fabric.

[0015] In the above vehicle seat, The slit has a bent portion that connects the opening and the holding portion, front Diction The curved portion may be connected between the upper and lower ends of the front record keeping holding portion. By doing so, it is possible to further suppress the force cloth bracket or ra power the cloth from coming off.

[0016] In the above vehicle seat, The retaining portion and the line segment connecting the first fastening portion and the second fastening portion should be approximately parallel. Thus, By positioning the retaining portion approximately parallel to the line segment connecting the first and second fastening portions, the force applied to the locking portion of the reinforcing fabric during airbag deployment can be evenly distributed. This allows for stable deployment of the airbag.

[0017] In the above vehicle seat, The length of the retaining portion in the extending direction is preferably longer than the length of the stepped portion in the extending direction.

[0025] According to the present invention, it is possible to facilitate the attachment of the force cloth that guides the deployment direction of the airbag. According to the present invention, it is possible to suppress the first force cloth from coming off the force cloth bracket. According to the present invention, when attaching the first force cloth to the first slit, it is possible to suppress the first force cloth from being damaged. According to the present invention, the rigidity of the force cloth bracket can be improved. According to the present invention, when the airbag is deployed, it is possible to suppress the first force cloth from being damaged by the flange portion of the force cloth bracket. According to the present invention, the first force cloth can be held by the force cloth bracket without creating wrinkles at the end of the first force cloth. According to the present invention, the force applied to the first locking portion of the first force cloth during airbag deployment can be evenly dispersed. According to the present invention, the deployment direction of the airbag can be made more stable. According to the present invention, the attachment rigidity of the force cloth bracket against the outward pulling force can be improved. According to the present invention, it is easy to position the bolt attached to the bolt fastening portion. According to the present invention, by making the pulling directions of the first force cloth and the second force cloth opposite during airbag deployment, the pulling forces of each other can be offset. According to the present invention, it is possible to suppress the pulling forces of the first force cloth and the second force cloth from being strongly applied to the bolt fastening portion. [Brief explanation of the drawing]

[0026] [Figure 1] This is a perspective view of the sheet according to this embodiment. [Figure 2] This is a cross-sectional view taken along line II-II in Figure 1. [Figure 3] This diagram shows the airbag module mounted on the side frame. [Figure 4] This diagram shows the reinforcement bracket attached to the side frame. [Figure 5] This diagram shows the configuration of the side frame. [Figure 6] This diagram shows the configuration of the reinforcement bracket. [Figure 7] This diagram shows the first and second reinforcing fabrics attached to the reinforcing fabric bracket. [Figure 8] This figure shows a reinforcement bracket relating to the first modified example. [Figure 9] This figure shows a reinforcement bracket relating to a second modified example. [Figure 10] This figure shows a reinforcement bracket relating to the third modified example. [Figure 11] This figure shows a reinforcement bracket relating to the fourth modified example. [Figure 12] This figure shows a reinforcement bracket relating to the fifth modified example. [Figure 13] This figure shows a reinforcement bracket relating to the sixth modified example. [Modes for carrying out the invention]

[0027] Hereinafter, the sheet S according to an embodiment of the present invention (hereinafter referred to as this embodiment) will be described with reference to Figures 1 to 13. In this embodiment, the seat S will be described using a vehicle seat as an example, but it is not limited to vehicle seats mounted on ground vehicles with wheels such as automobiles and trains, but may also be seats mounted on aircraft or ships that move on surfaces other than the ground. The embodiments described below are merely examples to facilitate understanding of the present invention and do not limit it. In other words, the shape, dimensions, arrangement, etc., of the components described below can be changed or improved without departing from the spirit of the present invention, and of course, equivalents thereof are included in the present invention.

[0028] In the following explanation, "front-to-back direction" refers to the front-to-back direction as viewed from the perspective of the person seated in seat S, and is the direction that coincides with the direction of travel of the vehicle. "Seat width direction" refers to the width direction of seat S, which corresponds to the left-right direction as viewed from the perspective of the person sitting in seat S. Furthermore, "vertical direction" refers to the height direction of the sheet S, which coincides with the vertical direction when the sheet S is viewed from the front.

[0029] <Configuration of Sheet S> Figure 1 shows a perspective view of the seat S. Note that, for illustrative purposes, a portion of the seat S (specifically, the front corner of the seat back S1) is shown with the surface material 2 removed.

[0030] The seat S mainly consists of a seat back S1 which is the backrest portion that supports the back of the sitter, a seat cushion S2 which is the seat portion that supports the buttocks of the sitter, and a headrest S3 which is positioned on top of the seat back S1 and supports the head of the sitter.

[0031] The seat back S1 is constructed by placing a pad material 1 on the seat back frame and covering it with a surface material 2. The seat cushion S2 is constructed by placing a pad material 1 on a seat cushion frame and covering it with a surface material 2. The headrest S3 is constructed by placing a pad material 1 on a core material and covering it with a surface material 2. Pad material 1 is a urethane base material molded by foam molding using, for example, urethane foam material. Furthermore, the surface material 2 provided on the seat S is made of a material such as cloth or leather.

[0032] Furthermore, as shown in Figure 1, an airbag module 10 is provided inside the side of the seatback S1. As shown in Figure 2, the airbag module 10 includes a bag 11 and an inflator 12 inside. The inflator 12 is a device that generates gas when it receives an activation signal from a sensor that detects a vehicle collision, and injects the generated gas into the bag 11 to inflate and deploy the bag 11. The mounting structure of the airbag module 10 will be described in detail below.

[0033] As shown in Figures 2 and 3, the airbag module 10 is attached to the side frame 20. The side frame 20 is a frame member that constitutes the side of the seat back frame, which forms the skeleton of the seat back S1. In this embodiment, the side frame 20 is configured with a shape in which the front and rear ends of a plate-shaped member are bent inward in the seat width direction.

[0034] Then, as shown in Figure 4, a reinforcing fabric bracket 40 is attached to the side of the side frame 20. Specifically, the reinforcing fabric bracket 40 is attached to the outer side of the side frame 20 in the seat width direction. Here, the reinforcing fabric bracket 40 is a component for attaching the first reinforcing fabric 30 (inner reinforcing fabric) and the second reinforcing fabric 35 (outer reinforcing fabric), which are reinforcing fabrics that guide the deployment direction of the bag body 11 of the airbag module 10. The configuration of the reinforcing fabric bracket 40 will be described below with reference to Figures 6 and 7.

[0035] <Configuration of the reinforcing fabric bracket 40> As shown in Figures 6 and 7, the reinforcing fabric bracket 40 has a plate portion 40A, flange portions 43 (front flange portion 43A and rear flange portion 43B) provided at the front and rear ends of the plate portion 40A, and bolt fastening portions 46. The plate portion 40A may be made of a material such as resin or metal.

[0036] Here, the plate portion 40A is a flat plate-shaped part to which the first reinforcing fabric 30, the second reinforcing fabric 35, and the airbag module 10 are attached. Specifically, a first slit 41, a second slit 42, a first through hole 44, and a second through hole 45 are formed in the plate portion 40A.

[0037] <<First Slit 41>> The first slit 41 is a slit formed in the reinforcing fabric bracket 40 for attaching the first reinforcing fabric 30, and is formed inward from the first edge 40B at the upper end of the plate portion 40A. Specifically, the first slit 41 has a first opening 41A, a first holding portion 41B, and a first bending portion 41C.

[0038] Furthermore, as shown in Figures 2 and 7, the first reinforcing fabric 30 has a first locking portion 31 which is formed in a loop shape by folding back the end and sewing it with the first sewing portion 31A. Then, by passing the first locking portion 31 of the first reinforcement fabric 30 through the first opening 41A, the first bent portion 41C, and the first holding portion 41B in that order, the first locking portion 31 of the first reinforcement fabric 30 can be locked to the first holding portion 41B, as shown in Figure 7.

[0039] The first opening 41A is provided on the first edge 40B, and the corner 41Aa of the first opening 41A is chamfered and rounded. This prevents the first reinforcing cloth 30 from being damaged when the first locking portion 31 of the first reinforcing cloth 30 is passed through the first opening 41A.

[0040] The first retaining portion 41B holds the first locking portion 31 of the first reinforcement cloth 30 that has been passed through the first opening 41A. Here, the first retaining portion 41B extends in the vertical direction. In other words, the first retaining portion 41B is formed in a straight line substantially parallel to the flange portion 43 formed at the front-rear end of the reinforcing cloth bracket 40. Furthermore, the flange portion 43 (front flange portion 43A, rear flange portion 43B) is longer in the vertical direction than the first retaining portion 41B.

[0041] Furthermore, the first retaining portion 41B is formed in the plate portion 40A between the first edge portion 40B and the second edge portion 40C. Furthermore, as shown in Figure 7, the first retaining portion 41B is formed in a straight line and is longer than the width of the first reinforcing cloth 30 (first locking portion 31). In this way, since the first holding portion 41B is formed in a straight line and is longer than the width of the first reinforcing cloth 30, the first reinforcing cloth 30 can be held by the reinforcing cloth bracket 40 without creating wrinkles in the first locking portion 31 of the first reinforcing cloth 30.

[0042] The first slit 41 has a first bent portion 41C that connects the first opening 41A and the first holding portion 41B. Specifically, the first bent portion 41C is bent in an L-shape, and the portion of the first bent portion 41C that connects to the first retaining portion 41B is located between the upper end 41Ba and the lower end 41Bb of the first retaining portion 41B. This prevents the first locking portion 31, which is held by the first holding portion 41B, from moving towards the first bending portion 41C even if it shifts upward. This prevents the first reinforcing fabric 30 from coming loose from the first holding portion 41B.

[0043] <<Second Slit 42>> Next, we will explain the second slit 42. The second slit 42 is a slit formed in the reinforcing fabric bracket 40 for attaching the second reinforcing fabric 35, and is formed inward from the second edge portion 40C at the lower end of the plate portion 40A. Specifically, as shown in Figure 7, the second slit 42 has a second opening 42A, a second holding portion 42B, and a second bending portion 42C.

[0044] Furthermore, as shown in Figures 2 and 7, the second reinforcing fabric 35 has a second locking portion 36 which is formed in a loop shape by folding back the end and sewing it with the second sewing portion 36A. Then, by passing the second locking portion 36 of the second reinforcement fabric 35 through the second opening 42A, the second bent portion 42C, and the second holding portion 42B in that order, the second locking portion 36 of the second reinforcement fabric 35 can be locked to the second holding portion 42B, as shown in Figure 7.

[0045] The second opening 42A is provided on the second edge 40C, and the corner 42Aa of the second opening 42A is chamfered and rounded. This prevents the second reinforcing fabric 35 from being damaged when the second locking portion 36 of the second reinforcing fabric 35 is passed through the second opening 42A.

[0046] The second retaining portion 42B holds the second locking portion 36 of the second reinforcement cloth 35 that has been passed through the second opening 42A. Here, the second retaining portion 42B extends in the vertical direction. In other words, the second retaining portion 42B is formed in a straight line substantially parallel to the flange portion 43 formed at the front-rear end of the reinforcing cloth bracket 40. Furthermore, the flange portion 43 (front flange portion 43A, rear flange portion 43B) is longer in the vertical direction than the second retaining portion 42B. Furthermore, the second retaining portion 42B is formed in the plate portion 40A between the first edge portion 40B and the second edge portion 40C.

[0047] Furthermore, as shown in Figure 7, the second retaining portion 42B is formed in a straight line and is longer than the width of the second reinforcement cloth 35 (second locking portion 36). In this way, since the second holding portion 42B is formed in a straight line and is longer than the width of the second reinforcing cloth 35, the second reinforcing cloth 35 can be held by the reinforcing cloth bracket 40 without creating wrinkles in the second locking portion 36 of the second reinforcing cloth 35.

[0048] The second slit 42 has a second bent portion 42C that connects the second opening 42A and the second holding portion 42B. Specifically, the second bent portion 42C is bent in an L-shape, and the portion of the second bent portion 42C that connects to the second retaining portion 42B is located between the upper end 42Ba and the lower end 42Bb of the second retaining portion 42B. This prevents the second locking portion 36, which is held by the second holding portion 42B, from moving towards the second bending portion 42C even if it shifts upward. This prevents the second reinforcement fabric 35 from coming loose from the second holding portion 42B.

[0049] <<Flange section 43>> The flange portion 43 has a front flange portion 43A provided on the front side of the reinforcing fabric bracket 40 and a rear flange portion 43B provided on the rear side. The flange portion 43 is bent from the plate portion 40A so as to protrude outward in the seat width direction, in other words, toward the airbag module 10 side.

[0050] <<First through-hole 44 and second through-hole 45>> Furthermore, in the reinforcing fabric bracket 40, a first through hole 44 and a second through hole 45 are formed at positions that straddle the first slit 41. Specifically, the first through hole 44 is formed on the upper side of the first bent portion 41C, and the second through hole 45 is formed on the lower side of the first bent portion 41C.

[0051] The first through-hole 44 and the second through-hole 45 are respectively fitted to the first bolt 13A and the second bolt 13B provided on the inflator 12 included in the airbag module 10. As shown in Figure 2, the first bolt 13A extends inward from the inflator 12 in the seat width direction and is fastened with a nut 15 while being inserted through the first through hole 44 and through holes formed in the protrusion 21 of the side frame 20. Specifically, as shown in Figure 5, the side plate of the side frame 20 has a first protrusion 21A and a second protrusion 21B arranged vertically. Both the first protrusion 21A and the second protrusion 21B are parts of the side plate of the side frame 20 that protrude outward from the sheet. A first through hole 22A and a second through hole 22B are formed in the center of each of the first protrusion 21A and the second protrusion 21B. The first through-hole 44 of the reinforcing fabric bracket 40 is positioned opposite the first through-hole 22A of the first protrusion 21A, and the second through-hole 45 of the reinforcing fabric bracket 40 is positioned opposite the second through-hole 22B of the second protrusion 21B. Then, a reinforcing fabric bracket 40 is placed between the side frame 20 and the airbag module 10, and the first bolt 13A extending from the inflator 12 is inserted through the first through hole 22A, and the second bolt 13B is inserted through the second through hole 22B, and nuts 15 are screwed onto the first bolt 13A and the second bolt 13B respectively to fasten them. As a result, the airbag module 10, the reinforcing fabric bracket 40, and the side frame 20 are fastened together. At this time, as shown in Figure 2, the reinforcing fabric bracket 40 is supported in contact with the protrusions 21 (first protrusion 21A, second protrusion 21B) of the side frame 20.

[0052] Here, the positional relationship between the first retaining portion 41B, the second retaining portion 42B, the first through hole 44, and the second through hole 45 will be explained. As shown in Figure 6, the line segment L connecting the first through hole 44 and the second through hole 45 is approximately parallel to the first retaining portion 41B and the second retaining portion 42B. Furthermore, the first retaining portion 41B and the second retaining portion 42B are formed in positions that overlap in the vertical direction with the line segment L connecting the first through hole 44 and the second through hole 45. Furthermore, the line segment L connecting the first through hole 44 and the second through hole 45 is located between the first retaining portion 41B and the second retaining portion 42B. In other words, in the front-rear direction of the sheet, the first through hole 44 and the second through hole 45 are provided between the first retaining portion 41B and the second retaining portion 42B.

[0053] <<Bolt fastening section 46>> Next, the bolt fastening portion 46 will be described. As shown in Figures 6 and 7, a bolt fastening portion 46 is provided below the second slit 42. Here, the bolt fastening portion 46 has a notch 46A that is closed at the top and open at the bottom. Then, as shown in Figures 4 and 5, the reinforcement bracket 40 can be fixed to the side frame 20 by fastening the bolt 16 through the notch 46A of the bolt fastening portion 46 and the third through hole 23 formed in the side frame 20. In this embodiment, the reinforcing fabric bracket 40 is fastened to the side frame 20 at three points: the first bolt 13A and the second bolt 13B extending from the inflator 12, and the bolt 16 mentioned above. This makes the attachment of the reinforcing fabric bracket 40 to the side frame 20 more secure.

[0054] Furthermore, the plate portion 40A and the bolt fastening portion 46 are offset in the sheet width direction. In other words, the bolt fastening portion 46 is positioned inward in the sheet width direction relative to the plate portion 40A. Specifically, a stepped portion 47 that slopes in the sheet width direction is formed between the plate portion 40A and the bolt fastening portion 46. Furthermore, the plate portion 40A is supported by a protrusion 21 that extends outward in the sheet width direction on the side frame 20, so that a part of the plate portion 40A is separated from the side frame 20. As shown in Figure 6, the bolt fastening portion 46 is located below the first slit 41 and the second slit 42.

[0055] <Installation of airbag module 10> Next, we will explain the installation procedure for the airbag module 10. First, as shown in Figure 7, the first reinforcing cloth 30 and the second reinforcing cloth 35 are attached to the reinforcing cloth bracket 40. Specifically, the ring-shaped first locking portion 31 of the first reinforcing cloth 30 is passed through the first slit 41 of the reinforcing cloth bracket 40, and the first locking portion 31 is locked to the first holding portion 41B. Similarly, the second locking portion 36 of the second through hole 45 is passed through the second slit 42 of the reinforcing cloth bracket 40, and the second locking portion 36 is locked to the second holding portion 42B.

[0056] Next, the reinforcement bracket 40, to which the first reinforcement fabric 30 and the second reinforcement fabric 35 are attached, is attached to the side frame 20. Specifically, bolts 16 are attached to the bolt fastening portion 46 to attach the reinforcement bracket 40 to the side frame 20.

[0057] Next, the airbag module 10 is attached to the reinforcement bracket 40. Specifically, the first bolt 13A and the second bolt 13B protruding from the inflator 12 of the airbag module 10 are passed through the first through hole 44 and the second through hole 45 of the reinforcement bracket 40, and fastened to each with nuts 15 from the inside of the side frame 20. In this way, the airbag module 10, the reinforcement bracket 40, and the side frame 20 are fastened together.

[0058] Next, pad material 1 is placed in front of and to the side of the airbag module 10, and then a covering material 2 is placed over the pad material 1. Here, a break portion 50 is provided in the pad material 1 at a location slightly in front of the airbag module 10 on the outside of the seat. For example, the break portion 50 is a part of the pad material 1 in which a slit is formed in the vertical direction. Then, at the broken portion 50, the broken portion end 32 of the first reinforcing fabric 30, the broken portion end 37 of the second reinforcing fabric 35, and the end of the surface material 2 are sewn together while being pulled in. The fractured end portion 32 mentioned above refers to the end of the first reinforcement fabric 30 opposite to the first locking portion 31. Similarly, the fractured end portion 37 refers to the end of the second reinforcement fabric 35 opposite to the second locking portion 36.

[0059] When the inflator 12 of the airbag module 10 is activated, the gas generated by the inflator 12 is injected into the bag 11, causing the bag 11 to inflate. At this time, the bag 11 is guided so that its deployment direction is toward the break section 50 by the reinforcing fabric bracket 40 located on the inside of the seat, the first reinforcing fabric 30 which serves as the inner reinforcing fabric and is attached to the break section 50 and the first holding portion 41B of the reinforcing fabric bracket 40, and the second reinforcing fabric 35 which serves as the outer reinforcing fabric and is attached to the break section 50 and the second holding portion 42B of the reinforcing fabric bracket 40. Specifically, as the bag 11 expands, the first reinforcing fabric 30 and the second reinforcing fabric 35 act to tear the rupture portion 50, causing the bag 11 to rupture the rupture portion 50 and bulge outwards from the rupture portion 50.

[0060] As described above, in the sheet S, the first reinforcing fabric 30 and the second reinforcing fabric 35 can be easily attached to the reinforcing fabric bracket 40 by passing the first locking portion 31 of the first reinforcing fabric 30 and the second locking portion 36 of the second reinforcing fabric 35 through the first slit 41 and the second slit 42 of the reinforcing fabric bracket 40.

[0061] <Modified example of the reinforcing cloth bracket 40> Next, the first to fourth modified examples of the reinforcement bracket 40 will be described with reference to Figures 8 to 13.

[0062] Figure 8 shows the reinforcing fabric bracket 140 according to the first modified example. As shown in Figure 8, the reinforcing fabric bracket 140 according to the first modified example differs from the reinforcing fabric bracket 40 in that a third through hole 48 and a fourth through hole 49 are further formed in the plate portion 40A, but otherwise they are the same.

[0063] The third through-hole 48 and the fourth through-hole 49 may be used to fasten the reinforcing fabric bracket 40 to the side frame 20 by passing bolts through them, or they may be used in place of the first through-hole 44 and the second through-hole 45 when attaching the airbag module 10.

[0064] Figure 9 shows a reinforcing fabric bracket 240 according to a second modified example. As shown in Figure 9, the reinforcing fabric bracket 240 according to the second modified example differs from the reinforcing fabric bracket 40 in that a hole 46Xa is formed in the bolt fastening portion 46X instead of a notch 46A, but otherwise it is the same. A bolt 16 is passed through this hole 46Xa, similar to the reinforcement bracket 40. This allows the reinforcement bracket 240 to be attached to the side frame 20.

[0065] Figure 10 shows a reinforcing fabric bracket 340 according to a third modified example. As shown in Figure 10, the reinforcing fabric bracket 340 according to the third modified example differs from the reinforcing fabric bracket 40 in that the notch formed in the bolt fastening portion 46Y opens toward the rear, but otherwise it is the same. A bolt 16 is passed through this bolt fastening portion 46Y, similar to the reinforcing fabric bracket 40. This allows the reinforcing fabric bracket 340 to be attached to the side frame 20.

[0066] Figure 11 shows the reinforcing fabric bracket 440 according to the fourth modified example. As shown in Figure 11, the reinforcing fabric bracket 440 according to the fourth modified example differs from the reinforcing fabric bracket 40 in that the notch formed in the bolt fastening portion 46Z opens forward, but otherwise it is the same. A bolt 16 is passed through this bolt fastening portion 46Z, similar to the reinforcing fabric bracket 40. This allows the reinforcing fabric bracket 440 to be attached to the side frame 20.

[0067] Figure 12 shows a reinforcing fabric bracket 540 according to the fifth modified example. As shown in Figure 12, the reinforcing fabric bracket 540 differs from the reinforcing fabric bracket 40 in that it does not have the bolt fastening portion 46 and the stepped portion 47 of the reinforcing fabric bracket 40, but is otherwise identical. That is, the reinforcing fabric bracket 540 is fastened to the side frame 20 at two points, the first through hole 44 and the second through hole 45.

[0068] Figure 13 shows a reinforcing fabric bracket 640 according to the sixth modified example. As shown in Figure 13, the reinforcing fabric bracket 640 differs from the reinforcing fabric bracket 40 in that a bead portion 51 is formed instead of the stepped portion 47 in the reinforcing fabric bracket 40, but is otherwise identical. The bead portion 51 is a recessed portion in the sheet width direction from the plate portion 40A and is connected to the bolt fastening portion 46. Specifically, the bead portion 51 is formed on the upper part of the notch portion 46A of the bolt fastening portion 46. The bead portion 51 and the bolt fastening portion 46 are in contact with the side plate of the side frame 20, and the reinforcing fabric bracket 640 is attached to the side frame 20 in this state. This suppresses rattling when the reinforcing fabric bracket 640 is attached to the side frame 20. In addition, the rigidity of the reinforcing fabric bracket 640 can be improved by providing the bead portion 51.

[0069] <Summary> The main features of the sheet S according to this embodiment are as follows: [1] The seat S is a vehicle seat comprising an airbag module 10 including a bag 11. The seat S comprises a frame member (e.g., a side frame 20) to which the airbag module 10 is attached, a first reinforcing cloth 30 that guides the deployment direction of the bag 11, and a reinforcing cloth bracket 40 attached to the frame member for fixing the first reinforcing cloth 30. The first reinforcing cloth 30 has a first locking portion 31 formed in the shape of a ring, and the reinforcing cloth bracket 40 has a first slit 41 for attaching the first reinforcing cloth 30. The first slit 41 has a first opening 41A provided on a first edge 40B of the reinforcing cloth bracket 40, and a first holding portion 41B that holds the first locking portion 31 of the first reinforcing cloth 30 passed through the first opening 41A. According to the sheet S described above, a portion of the first slit 41 for attaching the first reinforcing cloth 30 is open in the reinforcing cloth bracket 40, so the ring-shaped first locking portion 31 of the first reinforcing cloth 30 can be attached to the reinforcing cloth bracket 40 through the first slit 41. In other words, the sheet S described above makes it easy to attach the reinforcing fabric. The first reinforcement fabric mentioned above may be either the inner or outer reinforcement fabric.

[0070] [2] In the sheet S described above, the first slit 41 has a first bent portion 41C that connects the first opening 41A and the first holding portion 41B. This prevents the first reinforcing cloth 30 from coming off the reinforcing cloth bracket 40.

[0071] [3] In the sheet S described above, the corners 41Aa of the first opening 41A are chamfered. This prevents the first reinforcing cloth 30 from being damaged when it is attached to the first slit 41.

[0072] [4] In the sheet S described above, the reinforcing fabric bracket 40 has a flange portion 43 formed along the first holding portion 41B. This improves the rigidity of the reinforcing fabric bracket 40. As a result, the reinforcing fabric bracket 40 can stably hold the first reinforcing fabric 30. Furthermore, by distributing the contact points between the first locking portion 31 of the first reinforcement cloth 30 and the reinforcement cloth bracket 40, the load on the first locking portion 31 can be distributed. This helps to suppress damage to the first reinforcement cloth 30.

[0073] [5] In the above sheet S, the flange portion 43 is longer than the first retaining portion 41B. This further improves the rigidity of the reinforcing fabric bracket 40. As a result, the reinforcing fabric bracket 40 can hold the first reinforcing fabric 30 more stably.

[0074] [6] In the above-described seat S, the flange portion 43 protrudes toward the airbag module 10. This prevents the first reinforcing fabric 30 from being damaged by the flange portion 43 of the reinforcing fabric bracket 40 when the airbag deploys.

[0075] [7] In the sheet S described above, the first retaining portion 41B is formed in a straight line and is longer than the width of the first reinforcing fabric 30. In this way, the first reinforcing fabric 30 can be held in place by the reinforcing fabric bracket 40 without creating wrinkles at the end of the first reinforcing fabric 30.

[0076] [8] In the sheet S described above, the first bent portion 41C is connected between the upper and lower ends of the first holding portion 41B. This further prevents the first reinforcing cloth 30 from coming off the reinforcing cloth bracket 40.

[0077] [9] In the seat S described above, the reinforcing fabric bracket 40 has a first through hole 44 and a second through hole 45 formed in a position that straddles the first slit 41 for mounting the airbag module 10. In this way, by mounting the airbag module 10 in a position that straddles the first slit 41, it is possible to prevent the first reinforcing fabric 30 from coming off the reinforcing fabric bracket 40.

[0078]

[10] In the seat S described above, bolts 13 provided on the inflator 12 included in the airbag module 10 are attached to the first through hole 44 and the second through hole 45. By installing the inflator 12 in this manner to block the first slit 41, the first reinforcing cloth 30 can be further prevented from coming off the reinforcing cloth bracket 40.

[0079]

[11] In the sheet S described above, the first holding portion 41B and the line segment L connecting the first through hole 44 and the second through hole 45 are approximately parallel. In this way, by providing the first retaining portion 41B approximately parallel to the line segment L connecting the first through hole 44 and the second through hole 45, the force applied to the first locking portion 31 of the first reinforcement fabric 30 during airbag deployment can be evenly distributed. This allows the airbag to be deployed stably.

[0080]

[12] In the sheet S described above, the first holding portion 41B is formed at a position that overlaps in the vertical direction with the line segment L connecting the first through hole 44 and the second through hole 45. This allows the force applied to the first locking portion 31 of the first reinforcement fabric 30 during airbag deployment to be evenly distributed. As a result, the airbag can be deployed more stably.

[0081]

[13] The sheet S described above is provided with a second reinforcing cloth 35 that guides the unfolding direction of the bag body 11, the second reinforcing cloth 35 having a second locking portion 36 formed in the shape of a ring, and the reinforcing cloth bracket 40 having a second slit 42 for attaching the second reinforcing cloth 35. The second slit has a second opening 42A provided on the second edge portion 40C of the reinforcing cloth bracket 40 and a second holding portion 42B that holds the second locking portion 36 of the second reinforcing cloth 35 that has been passed through the second opening 42A. This allows the first reinforcement fabric 30 and the second reinforcement fabric 35 to be attached to a single reinforcement fabric bracket 40. This makes the deployment direction of the airbag more stable.

[0082]

[14] In the above sheet S, the first reinforcing cloth 30 is an inner reinforcing cloth, the second reinforcing cloth 35 is an outer reinforcing cloth, and the reinforcing cloth bracket 40 has a bolt fastening portion 46 provided below the second retaining portion 42B. This allows for more stable deployment of the airbag. Furthermore, the bolt fastening portion 46 is further formed on the reinforcing fabric bracket 40, which improves the mounting rigidity of the reinforcing fabric bracket against outward tensile forces.

[0083]

[15] In the sheet S described above, the bolt fastening portion 46 is closed on the upper side and open on the lower side. Because the upper side of the bolt fastening portion 46 is closed in this way, it becomes easier to position the bolt 16 to be attached to the bolt fastening portion 46.

[0084]

[16] In the sheet S described above, the line segment L connecting the first through hole 44 and the second through hole 45 is located between the first retaining portion 41B and the second retaining portion 42B. This allows the first retaining portion 41B and the second retaining portion 42B to be positioned with the fastening point of the airbag module 10 separated by each other. This makes it possible to reverse the pulling directions of the first reinforcing fabric 30 and the second reinforcing fabric 35 when the airbag is deployed, thereby canceling out the pulling forces between them. As a result, it is possible to suppress the strong force applied to the reinforcing fabric bracket 40 when the airbag is deployed and to prevent the reinforcing fabric bracket 40 from coming off when the airbag is deployed.

[0085]

[17] In the above sheet S, the reinforcing fabric bracket 40 has a stepped portion 47 formed between the bolt fastening portion 46 and the second holding portion 42B. This prevents strong tensile forces from being applied to the bolt fastening portion 46 by the first reinforcing fabric 30 and the second reinforcing fabric 35. This prevents strong forces from being applied to the reinforcing fabric bracket 40 when the airbag deploys, and thereby further prevents the reinforcing fabric bracket 40 from coming off.

[0086] Furthermore, in the above-described seat S, the reinforcing fabric bracket 40 is attached to the frame member by bolts 13 of the inflator 12. The reinforcing fabric bracket 40 is then attached to the frame member at the bolt fastening portion 46 using bolts 16 separate from the bolts 13 of the inflator 12. Furthermore, the frame members mentioned above are not limited to the side frame 20, but also include various components such as the metal frame, metal wires, and resin plates inside the seat S.

[0087] <Other Embodiments> The present invention is not limited to the embodiments described above. Although an example showing the airbag module 10 attached to one side of the seat S is provided, the airbag module 10 may also be attached to both sides of the seat S. In this case, the side closer to the vehicle door becomes the near-side airbag, and the side further from the vehicle door becomes the far-side airbag.

[0088] Furthermore, the frame member to which the reinforcement bracket 40 is attached is not limited to the side frame 20. The reinforcement bracket 40 can also be attached to frame members located inside the vehicle. In this case, the reinforcing fabric bracket 40 may be positioned between the frame member and the airbag module 10.

[0089] Furthermore, other frame members may be placed between the reinforcing fabric bracket 40 and the side frame 20. Furthermore, the reinforcing fabric bracket 40 (and other variations thereof) may be coated entirely with nylon. [Explanation of symbols]

[0090] S Seat S1 Seatback S2 Seat Cushion S3 Headrest 1. Pad material 2 Skin material 10 Airbag Modules 11 Bag body 12 Inflators 13 volts 13A First bolt 13B Second bolt 15 nuts 16 volts 20 Side Frames 21 Convex part 21A First protrusion 21B Second protrusion 22A 1st through hole 22B 2nd through hole 23 Third through hole 30. First reinforcement fabric (inner reinforcement fabric) 31 First locking part 31A 1st sewing section 32 End portion of fractured section 35. Second reinforcement fabric (outer reinforcement fabric) 36 Second locking section 36A 2nd sewing section 37 End of fractured portion 40 Reinforcement Fabric Bracket 40A plate part 40B First edge 40C 2nd edge 41. First Slit 41A 1st opening 41Aa Corner 41B 1st holding part 41Ba upper end 41Bb Lower end 41C 1st bending part 42. Second Slit 42A 2nd opening 42Aa Corner 42B 2nd holding part 42Ba upper end 42Bb Lower end 42C 2nd bending part 43 Flange section 43A Front flange section 43B Rear flange section 44 First through hole 45 Second through hole 46 Bolt fastening section 46A Notch 46X Bolt fastening section 46Xa hole 46Y Bolt fastening section 46Z Bolt fastening section 47 Stepped section 48 Third through hole 49 Fourth through hole 50 Fracture section 51 Bead section 140 Reinforcement Fabric Bracket 240 Reinforcement Fabric Bracket 340 Reinforcement Fabric Bracket 440 Reinforcement Bracket 540 Reinforcement Bracket 640 Reinforcement Bracket L-shaped line segment

Claims

1. A vehicle seat comprising an airbag module including a bag, A frame member to which the airbag module is attached, A reinforcing cloth that guides the unfolding direction of the bag, The frame member is attached to a reinforcing fabric bracket for fixing the reinforcing fabric, and the bracket is provided for this purpose. The aforementioned reinforcement bracket is A slit for attaching the aforementioned reinforcing fabric, The vehicle seat has a stepped portion that slopes in the width direction, The seat for a vehicle is characterized in that the stepped portion is arranged to extend in a direction perpendicular to the longitudinal direction of the slit.

2. The reinforcing fabric bracket has a first fastening portion and a second fastening portion for fastening the reinforcing fabric bracket to the frame member, The vehicle seat according to claim 1, characterized in that the slit includes a portion extending laterally and is positioned between the first fastening portion and the stepped portion.

3. The slit is An opening provided at the edge of the reinforcing fabric bracket, It has a holding part that holds the reinforcing cloth passed through the opening, The vehicle seat according to claim 2, characterized in that the stepped portion extends in a direction perpendicular to the extending direction of the holding portion.

4. The vehicle seat according to claim 3, characterized in that the second fastening portion is positioned below the holding portion.

5. The vehicle seat according to claim 3 or 4, characterized in that the reinforcing fabric bracket has a flange portion formed along the holding portion.

6. The vehicle seat according to claim 5, characterized in that the flange portion is longer than the retaining portion.

7. The vehicle seat according to any one of claims 3 to 6, characterized in that the retaining portion is formed in a straight line and is longer than the width of the reinforcing cloth.

8. The slit has a bent portion that connects the opening and the holding portion, The vehicle seat according to any one of claims 3 to 7, characterized in that the bent portion is connected between the upper and lower ends of the holding portion.

9. The vehicle seat according to any one of claims 3 to 8, characterized in that the holding portion and the line segment connecting the first fastening portion and the second fastening portion are substantially parallel.

10. The vehicle seat according to any one of claims 3 to 9, characterized in that the length of the holding portion in the extending direction is longer than the length of the stepped portion in the extending direction.

Images