Occupant restraint device for vehicle

Abstract

Provided is a vehicle occupant restraint device capable of smoothly inflating and deploying an airbag cushion while efficiently holding the airbag cushion in a housed state. A side airbag safety device (100) is provided with a side frame (110) and an airbag module (112). An airbag module (112) is provided with: an airbag cushion (114); and a cover member (120) that covers a part of the outer periphery of the airbag cushion (114) in a direction (L2) orthogonal to the side frame (110). The side frame (110) has: a frame vertical wall section (130) provided along the side surface of the seat back (104); and a frame protrusion (132) that protrudes outward in the width direction of the seat back (104). The cover member (120) is disposed in a state in which the cover member (120) is erected between the frame vertical wall portion (130) and an end portion (142) on the outside in the width direction of the frame protruding portion (132) in an A-A cross-section in the orthogonal direction (L2) of the side frame (110).

Description

Technical Field

[0001] This invention relates to a vehicle occupant restraint device for restraining vehicle occupants in emergency situations. Background Technology

[0002] In recent years, airbags have become standard equipment in vehicles for occupant restraint. Airbags are safety devices that operate in emergency situations such as vehicle collisions, using airbags that inflate under air pressure to restrain and protect occupants.

[0003] Airbag devices come in various types depending on their placement and application. For example, in Patent Document 1... Figure 1 The present invention discloses a side airbag device disposed on the side of the seat 1. In the technology of Patent Document 1, the airbag module 11 is housed in a resin module housing 12 and mounted on the outside of the side frame 2F.

[0004] Existing technical documents Patent documents Patent Document 1: Japanese Patent Application Publication No. 2015-58884 Summary of the Invention

[0005] The problem the invention aims to solve In recent years, there has been a trend of increasing performance requirements and specifications in automotive crash safety evaluations. To meet these requirements, airbag cushions have inevitably become larger. Furthermore, with the advancement of autonomous driving in automobiles, seat frame shapes are also evolving. These increases in airbag cushion size and the new shapes of seat frames have made it difficult to ensure sufficient storage space for side airbag safety devices.

[0006] In particular, the aforementioned new seat frame shape sometimes hinders the smooth inflation and deployment of the airbag cushions. To further improve the performance of the side airbag safety device, efficient storage and smooth inflation and deployment are necessary.

[0007] In view of these problems, the present invention aims to provide a vehicle occupant restraint device that can efficiently maintain the airbag cushion's stowed shape and smooth inflation and deployment.

[0008] Problem Solving Methods To address the aforementioned problems, the representative structure of the vehicle occupant restraint device according to the present invention comprises: a side frame, which is built into the seat back of a vehicle seat and extends along the side of the seat back; an airbag module, which is installed on the outer side of the seat back in the width direction of the side frame; characterized in that the airbag module has: an airbag cushion, which is formed in a predetermined storage shape of being rolled up or folded; a cover member, which wraps around at least a portion of the outer periphery of the stored airbag cushion in a direction orthogonal to the length direction of the side frame; the side frame has: a frame longitudinal wall portion, which is formed along the side of the seat back; a frame protrusion, which is provided on the front side of the seat back in the frame longitudinal wall portion and protrudes outward in the width direction of the seat back of the frame longitudinal wall portion; and the cover member is configured to be mounted between the ends of the frame longitudinal wall portion and the frame protrusion on the cross section in the orthogonal direction of the side frame.

[0009] According to the aforementioned cover component, compared to a resin shell or the like, the airbag cushion can be effectively housed within the limited space inside the seat back. Furthermore, according to the aforementioned structure, by covering the space between the inner corners of the longitudinal wall portion of the side frame and the inner corner of the frame protrusion, the airbag cushion can be prevented from entering these inner corners during deployment, allowing the airbag cushion to smoothly and quickly inflate and deploy towards the front of the seat back.

[0010] The aforementioned cover component can also extend linearly from the longitudinal wall of the frame to the outer end of the frame protrusion in the width direction.

[0011] The cover component with the above structure can also prevent the airbag from entering the inner corner of the side frame during deployment, allowing the airbag to expand and deploy smoothly.

[0012] The aforementioned cover component may also have: a rear grounding portion that runs along and contacts the longitudinal wall of the frame; an inclined portion that extends from the rear grounding portion to the end of the frame protrusion in the width direction; and a front grounding portion that contacts the end of the frame protrusion while extending towards the front of the seat back.

[0013] The cover component with the above structure can also efficiently store the airbag cushion in the limited space inside the seat back, and can prevent the airbag cushion from entering the inner corner of the side frame during deployment.

[0014] The aforementioned cover component can also cover the inner angle formed by the longitudinal wall of the frame and the protrusion of the frame on a cross section in the orthogonal direction to the side frame, so as to form a specified space.

[0015] The cover component with the above structure can also prevent the airbag from entering the inner corner of the side frame during deployment, allowing the airbag to expand and deploy smoothly.

[0016] The aforementioned cover component may also have at least a portion of a rigid part that compresses multiple polymer fibers.

[0017] For example, by using the rigid part of the above structure to cover the inner corner of the side frame, it is possible to effectively prevent the airbag cushion from entering the inner corner of the side frame during deployment, and the airbag cushion can be smoothly inflated and deployed.

[0018] The airbag module described above can also be used for side airbags. With the above structure, a side airbag safety device that can efficiently house the airbag cushion can be realized.

[0019] Invention Effects According to the present invention, a vehicle occupant restraint device is provided that enables the airbag cushion to maintain its stored shape efficiently and to expand and deploy smoothly. Attached Figure Description

[0020] Figure 1 This is a diagram illustrating an outline of a vehicle side airbag safety device according to an embodiment of the present invention.

[0021] Figure 2 This example illustrates the inner side of the seat back in the width direction. Figure 1 The image shows an observation of the side airbag safety device.

[0022] Figure 3 It is shown as a separate example. Figure 2 (a) is a diagram of the airbag module.

[0023] Figure 4 This example illustrates Figure 2 (a) is a diagram showing the operation of the side airbag safety device.

[0024] Figure 5 This example illustrates Figure 4 The diagram shows a variation of the cover component. Detailed Implementation

[0025] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific values ​​shown in the above embodiments are merely illustrative to facilitate understanding of the invention and do not limit the invention unless otherwise stated. Furthermore, in this specification and the accompanying drawings, elements having substantially the same function or structure are omitted from repeated description by using the same symbols; additionally, elements not directly related to the present invention are omitted from the illustrations.

[0026] Figure 1 This is a diagram illustrating the outline of a vehicle occupant restraint device (hereinafter referred to as side airbag safety device 100) according to an embodiment of the present invention. Figure 1 (a) is a diagram illustrating the state of the side airbag safety device 100 before activation.

[0027] In this embodiment, when the occupant is seated in a proper posture on seat 102, the direction the occupant is facing is referred to as forward, and the opposite direction is referred to as rearward. Furthermore, when the occupant is seated in a proper posture on seat 102, the occupant's right side is referred to as the right direction, and the occupant's left side is referred to as the left direction. Moreover, when the occupant is seated in a proper posture, the direction of the occupant's head is referred to as upward, and the direction of the occupant's waist is referred to as downward. In the accompanying drawings used in the following description, the forward, backward, left, right, up, and down directions based on these occupants will be illustrated using arrows F (Forward), B (Back), L (Left), R (Right), U (Up), and D (Down), respectively.

[0028] Typically, vehicle seats can rotate in any direction. Therefore, the direction relative to the occupant seated in the aforementioned seat 102 may differ from the direction relative to the vehicle. Furthermore, the side airbag safety device 100 can be installed in any seat on the front, rear, or even either side of the vehicle.

[0029] Seat 102 includes: a seat back 104 that supports the occupant's back; and a seat cushion 106 that supports the occupant's buttocks. Figure 1 In (a), the outer surface of the seat back 104 is shown by dashed lines through the inner seat frame 108, etc.

[0030] The seat frame 108 is a skeleton component built into the seat back 104. Seat cushioning, such as polyurethane material, is filled around the seat frame 108. The side frame 110 is a portion of the seat frame 108 that extends along the side of the seat back 104. The side airbag safety device 100 is mounted on the side frame 110 and is used when the seat is built into the seat back 104.

[0031] Figure 1 (b) Example shows Figure 1 (a) The side airbag safety device 100 after activation. In emergency situations such as vehicle impact, the side airbag safety device 100 inflates the airbag cushion 114 to restrain the occupant seated in seat 102 from the side.

[0032] The airbag cushion 114 is a bag-shaped component that catches the occupant. It is formed by sewing or bonding multiple base fabrics that overlap to form its surface, or by using OPW (One-Piece Woven) textiles.

[0033] The inflator 116 is a gas generating device that operates upon receiving an operation signal from the vehicle side during an impact, supplying gas into the airbag cushion 114. In this embodiment, the inflator 116 is a cylinder-type (cylindrical) inflator.

[0034] The inflator 116 is built into the rear side inside the airbag cushion 114. The inflator 116 has a plurality of studs 118 that are fastened to the side frame 110.

[0035] Currently popular air inflators include types that fill with a gas-generating agent and burn it to produce gas, types that fill with compressed gas but supply gas without generating heat, and types that utilize a mixture of combustion gas and compressed gas simultaneously. As air inflator 116, any type can be used.

[0036] Figure 2 This example illustrates the inner side of the seat back 104 in the width direction. Figure 1 The figure shows the side airbag safety device 100 under observation. Figure 2 (a) illustrates the position of the seat back 104 from the inside in the width direction. Figure 1 (a) A diagram showing the side airbag safety device 100 under observation.

[0037] Before operation, the airbag cushion 114, with the inflator 116 inserted, is in a rolled-up or folded storage form, and is modularized as an airbag module 112 by surrounding its outer periphery with a cover member 120. This airbag module 112 is assembled to the outer side of the seat back 104 in the width direction relative to the side frame 110.

[0038] In this embodiment, the airbag module 112 is mounted on the side frame 110 on the right side of the seat back 104 in the width direction, but it can also be mounted on the side frame on the left side in the width direction. That is, the airbag module 112 can be located on the side of the seat 102 near the door (proximal side) or on the side of the seat 102 away from the collision site (distal side) inside the vehicle.

[0039] Figure 2 (b) illustrates the position of the seat back 104 from the inside in the width direction. Figure 1 (b) A diagram showing the side airbag safety device 100. The airbag cushion 114, when receiving gas from the inflator 116, expands forward from the side frame 110 by using the expansion pressure to open the cover component 120.

[0040] Figure 3 It is shown as a separate example. Figure 2 (a) is a diagram of the airbag module 112. Figure 3 (a) is an example Figure 2 (a) A diagram of the airbag module 112 before operation.

[0041] As described above, the airbag module 112 is in a state where the cover component 120 surrounds the airbag pad 114 in a storage form. The cover component 120 is made of a stretchable fabric material containing multiple polymer fibers, and wraps around the outer periphery of the airbag pad 114 in a storage form. Under the expansion pressure of the airbag pad 114, it breaks and releases the airbag pad 114.

[0042] The cover component 120 can be configured to completely cover the outer periphery of the airbag cushion 114 in its storage form, or it can be configured to only cover a part of the outer periphery of the airbag cushion 114 in its storage form. That is, the cover component 120 only needs to be a structure that can keep the airbag cushion 114 rolled up or folded.

[0043] The cover component 120 is in a state where the stud 118 of the inflator 116 extends from the inside to the outside. In order to keep the airbag cushion 114 in a wrapped state, the cover component 120 can be hooked on the stud 118 for fixation, or it can be fixed with a breakable strap or the like.

[0044] Figure 3 (b) is to open Figure 3 (a) A diagram showing the state of the cover component 120. Figure 3 In (b), the cover component 120 is illustrated in a state of unfolding on a plane. The cover component 120 is provided with bolt holes 122 at various locations to allow the studs 118 of the inflator 116 to pass through.

[0045] As described above, the cover component 120 is formed of a stretchable fabric material containing a plurality of polymer fibers, and in this embodiment, it is specifically implemented as a felt-like nonwoven fabric. Polyester fibers can be cited as an example of polymer fibers.

[0046] The aforementioned polymer fibers can be single-component fibers or bi-component composite fibers with different properties in the core and coating. In the case of bi-component composite fibers, if the melting point of the coating is set lower than that of the core, it is suitable for melting and bonding the fibers together. Furthermore, stretchable fabric materials can also be formed by containing various types of polymer fibers.

[0047] In the cover component 120 of this embodiment, in order to maintain its shape while enclosing the airbag cushion 114, a rigid portion 124 is formed on part or all of it. The rigid portion 124 is made hard and difficult to bend by pressing multiple polymer fibers using a specified machine.

[0048] The rigid portion 124 is formed by pressing and fusing multiple polymer fibers of the cover component 120. The pressing process is applied to the bicomponent composite fibers contained in the cover component 120 at a temperature higher than the melting point of the coating and lower than the melting point of the core. Through this operation, the bicomponent composite fibers are fused with other fibers.

[0049] The bending stiffness (second moment of cross section × Young's modulus) of the aforementioned rigid portion 124 is higher than that of other regions. On the other hand, the areas that have not undergone stamping can be utilized as flexible portions that retain their original flexibility. The soft portions are characterized by a lower proportion of polymer fibers that are not fused or at least fused compared to the rigid portion 124.

[0050] A vulnerable portion 128 is provided on the cover member 120. The vulnerable portion 128 is the location where the airbag cushion 114 becomes the starting point for cracking when it expands and unfolds. The vulnerable portion 128 can be implemented, for example, as a dotted-line slit formed longitudinally through the cover member 120.

[0051] The cover component 120, by providing a vulnerable portion 128, can smoothly rupture under the inflation pressure of the airbag cushion 114, thereby releasing the airbag cushion 114. In addition, the vulnerable portion 128 can be implemented as a structure with slits arranged in a serrated pattern or small slits (through holes) in addition to the dotted slits.

[0052] Figure 4 This example illustrates Figure 2 (a) is a diagram showing the operation of the side airbag safety device 100. Figure 4 (a) is Figure 2 (a) is a cross-sectional view of the side airbag safety device 100 (AA section). This AA section is consistent with... Figure 2 (a) A section on the orthogonal direction L2 orthogonal to the length direction L1 of the illustrated side frame 110.

[0053] The airbag module 112 is mounted on the outer side of the seat back 104 in the width direction of the side frame 110 using studs 118. The airbag cushion 114 in its storage form has a rear part 114a of the airbag cushion with a built-in inflator 116 and a front part 114b of the airbag cushion that is folded or otherwise disposed of.

[0054] Side frame 110 in orthogonal direction L2 (refer to) Figure 2 (a) The cross-section is curved. In detail, a frame longitudinal wall portion 130 and a frame protrusion 132 are formed on the side frame 110.

[0055] The frame longitudinal wall 130 is along the seat back 104 (see reference). Figure 1 (a)) The planar part on the side. On the rear side of the frame longitudinal wall 130, the frame rear wall 134 extends inward in the width direction toward the seat back 104.

[0056] The frame protrusion 132 is a part located on the front side of the seat back 104 of the frame longitudinal wall portion 130, and protrudes outward in the width direction of the seat back 104 relative to the frame longitudinal wall portion 130.

[0057] Cover component 120 becomes in Figure 2(a) The state in which at least a portion of the outer periphery of the airbag cushion 114 in the illustrated orthogonal direction L2 is wrapped.

[0058] The cover component 120 is provided with the aforementioned rigid portion 124. In particular, the rigid portion 124 is formed with a rear grounding portion 136, an inclined portion 138, and a front grounding portion 140 according to the cross-sectional shape of the side frame 110.

[0059] The rear grounding portion 136 is the part that contacts the longitudinal wall portion 130 of the frame and is formed on the side frame 110 of the rear portion 114a of the airbag. The rear grounding portion 136 is formed in a planar shape to facilitate grounding with the longitudinal wall portion 130 of the frame.

[0060] The inclined portion 138 is a portion that extends obliquely from the front side of the rear grounding portion 136 and is formed on the side frame 110 from the rear portion 114a of the airbag to the front portion 114b of the airbag. The inclined portion 138 extends obliquely and linearly from the rear grounding portion 136 toward the outer end 142 of the frame protrusion 132 in the width direction.

[0061] The front ground contact portion 140 is the portion that contacts the end 142 of the frame protrusion 132, and is formed on the side frame 110 of the front portion 114b of the airbag cushion. The front ground contact portion 140 extends from the inclined portion 138 toward the front side of the seat back 104 so as to contact the end 142.

[0062] Figure 4 (b) is an example. Figure 4 (a) is a diagram showing the state of the side airbag safety device 100 when it is in operation.

[0063] When the vehicle's sensors detect an impact, gas is supplied from the inflator 116. At this time, a vulnerable portion 128 is provided on the cover assembly 120, for example, located on the front side of the seat back 104 or on the outer side in the vehicle width direction. Then, the vulnerable portion 128 ruptures under the inflation pressure of the airbag cushion 114, and the cover assembly 120 releases the airbag cushion 114.

[0064] When the airbag cushion 114 begins to inflate and deploy, it expands forward from the seat back 104. However, on the side frame 110 of the seat back 104, there are sometimes irregularities formed by frame protrusions 132, etc. Therefore, in this embodiment, an inclined portion 138 is provided as a rigid part 124 on the cover member 120, and the irregularities of the side frame 110 are covered by this inclined portion 138.

[0065] The inclined portion 138 is configured in the orthogonal direction L2 of the side frame 110 (see reference). Figure 2In section AA of (a)), the space E1 is formed at the inner angle 144 of the frame longitudinal wall portion 130 and the frame protrusion 132. Therefore, when viewed from the rear portion 114a of the airbag cushion, a guide formed by the inclined portion 138 is formed from the end 142 of the frame longitudinal wall portion 130 toward the frame protrusion 132.

[0066] The inclined portion 138 is arranged in a straight line between the longitudinal wall portion 130 of the frame and the end 142 of the frame protrusion 132. Through the inclined portion 138, the area near the inner corner 144 is divided into a triangular space E1, so that the airbag cushion 114 will not enter the space E1 during deployment.

[0067] According to this embodiment, the rigid portion 124 of the cover member 120 forms an inclined portion 138, which covers the space E1 between the longitudinal wall portion 130 of the side frame 110 and the inner corner 144 of the frame protrusion 132, thereby preventing the airbag cushion 114 from entering the inner corner 144 during deployment. That is, the inclined portion 138 prevents the airbag cushion 114 from being stuck by the frame protrusion 132. With this structure, the airbag cushion 114 can be prevented from interfering with the frame protrusion 132 during deployment, and the airbag cushion 114 can be smoothly and quickly inflated and deployed towards the front of the seat back 104.

[0068] In this embodiment, the cover member 120, having a rigid portion 124, allows the retracted airbag cushion 114 to be kept smaller. In particular, if the cover member 120 is made of polymer fibers, its shape can be altered to a certain extent compared to a resin shell, thus allowing the airbag cushion 114 to be retracted into surrounding structures. Therefore, according to this cover member 120, the seat back 104 (see reference...) can be retracted... Figure 1 (a)) The limited space within the device effectively accommodates the airbag cushion 114.

[0069] Because the airbag module 112 can prevent the airbag pad 114 from becoming disordered, such as rolling up, through the cover member 120, it is easy to perform assembly operations of the airbag pad 114 on vehicles, etc. In addition, after the airbag module 112 is assembled in the vehicle, the cover member 120 can prevent other structures from interfering with the airbag pad 114, and even if it is subjected to vibration during driving, it can properly maintain the rolling up or folding of the airbag pad 114.

[0070] In this embodiment, the rigid portion 124 is pre-formed on the cover member 120 before surrounding the airbag cushion 114. Therefore, compared to the case where the cover member 120 after surrounding the airbag cushion 114 is processed, there is no risk of disturbing the airbag cushion 114's winding, and the impact on devices such as the inflator 116 is also small and appropriate.

[0071] The vulnerable portion 128 can be provided not only on the front side of the airbag cushion 114, but also appropriately at various locations on the cover member 120. Furthermore, there is no limitation on the number of sheets of stretchable fabric forming the cover member 120; for example, multiple sheets of stretchable fabric can be overlapped and stamped to form a rigid portion with higher bending rigidity. This can improve the bending rigidity of the cover member 120, thereby improving the retention performance of the airbag cushion 114, or improve the bending rigidity of the inclined portion 138 to more effectively prevent the airbag cushion 114 from interfering with the frame protrusion 132.

[0072] The cover member 120 can also be formed by thermally fusing the edges of multiple end pieces made of polymer fibers together. In this case, since the edges of the end pieces peel off from each other under the inflation pressure of the airbag cushion 114, these edges can be used as weak points 128. Furthermore, the cover member 120 is not limited to nonwoven materials and can also be formed of woven materials. That is, the cover member 120 is sufficient as long as it is a fabric with a material composition or fiber structure that imparts mobility or elasticity to the fibers.

[0073] Figure 5 This example illustrates Figure 4 A diagram showing a variation of the cover component 120 (cover component 204). In the following description, the same symbols will be used to denote the already described components, thus omitting their descriptions. Furthermore, components with the same names as the already described components, even if labeled with different symbols, have the same structure and function.

[0074] Figure 5 (a) is the corresponding Figure 4 (a) A diagram illustrating the cover component 204 is shown. In this cover component 204, the inclined portion 206 is not a straight line but is formed in a stepped shape.

[0075] Inclined portion 206 is also the same as inclined portion 138 (see reference). Figure 4 (a) Similar to the previous example, the inclined portion 206 extends obliquely in a stepped manner from the rear grounding portion 136 toward the outer end 142 of the frame protrusion 132 in the width direction. The inclined portion 206 is also configured such that, in the orthogonal direction L2 of the side frame 110 (see reference...). Figure 2 (a)) The AA section is covered in a state in which a space E2 is formed at the inner angle 144 between the frame longitudinal wall portion 130 and the frame protrusion 132.

[0076] Figure 5 (b) is the corresponding Figure 4 (b) A diagram illustrating the cover component 204. Viewed from the rear portion 114a of the airbag cushion via the inclined portion 206, a guide is formed at the end 142 of the frame longitudinal wall portion 130 toward the frame protrusion portion 132.

[0077] The inclined portion 206 is configured to be erected in a stepped manner between the longitudinal wall portion 130 of the frame and the end 142 of the frame protrusion 132. Through this inclined portion 206, the area near the inner corner 144 is also divided into a space E2, so that the airbag cushion 114 will not enter the space E2 during deployment.

[0078] As described above, even if the inclined portion 206 has irregularities such as a stepped shape rather than a straight line, it can still cover the space E2 of the inner corner 144 of the frame longitudinal wall portion 130 and the frame protrusion 132, thereby preventing the airbag cushion 114 from entering the inner corner 144 during deployment. This cover component 204 also prevents the airbag cushion 114 from interfering with the frame protrusion 132 during deployment, allowing the airbag cushion 114 to expand smoothly and quickly towards the front of the seat back 104.

[0079] In this embodiment, the occupant restraint device is implemented and described as a side airbag safety device 100 that restrains occupants from the side. However, the occupant restraint device according to the present invention may also be implemented as a device other than the side airbag safety device 100. For example, the occupant restraint device may also be implemented as a center airbag disposed on the central side of the rear seat.

[0080] A center airbag is a device that uses an airbag cushion to prevent rear seat occupants from colliding with each other. In this case, it is implemented in the center section of the rear seats. Figure 4 (a) The side frame 110 and airbag module 112. According to this example, the side frame 110 and airbag module 112 also enable the airbag cushion 114 to be effectively housed in the limited space within the rear seat, and enable the airbag cushion 114 to smoothly and quickly inflate and deploy towards the front of the seat back of the rear seat.

[0081] The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the embodiments described above are preferred examples of the present invention, and other embodiments can also be implemented or completed by various methods. Unless otherwise specified in this application specification, the present invention is not limited to the shape, size, and structural configuration of the detailed components shown in the accompanying drawings. Furthermore, the expressions and terms used in this application specification are for illustrative purposes and are not limited thereto unless otherwise specified.

[0082] Therefore, those skilled in the art will obviously be able to conceive of various modifications or alterations within the scope of the claims, and these are of course also within the technical scope of this invention.

[0083] Industrial availability This invention relates to a vehicle occupant restraint device that can be used to restrain vehicle occupants in emergency situations.

[0084] Symbol Explanation 100…Side airbag safety device 102…Seat 104… Seat backrest 106… Seat cushion 108…Seat frame 110…Side frame 112…Airbag Module 114…Airbag Cushion 114a…rear part of the airbag cushion 114b…front part of the airbag cushion 116…Inflator 118…Stud 120… Cover component 122… Bolt hole 124… Hard part 128… Vulnerable part 130… Frame longitudinal wall section 132… Frame protrusion section 134… Rear wall of the frame 136… Rear grounding part 138… Inclined section 140… Front grounding section 142…end 144…inner corner E1…space L1…length direction L2…Orthogonal direction 200…Side airbag safety device 202…Airbag Module 204…Cover Component 206… Inclined section E2… Space

Claims

1. A vehicle occupant restraint device comprising: a side frame, which is built into the seat back of a vehicle seat and extends along the side of the seat back; and an airbag module, which is mounted on the outer side of the side frame in the width direction of the seat back. The occupant restraint device for this vehicle is characterized by the following features: The airbag module has: Airbag cushions, which are formed into a prescribed storage shape by rolling or folding; A cover component that, in a direction orthogonal to the length direction of the side frame, wraps around at least a portion of the outer periphery of the retractable airbag cushion. The side frame has: The frame longitudinal wall portion is the portion along the side of the seat back; A frame protrusion is provided on the front side of the seat back in the longitudinal wall portion of the frame and protrudes outward in the width direction of the seat back in the longitudinal wall portion of the frame. The cover component is configured to be mounted between the outer ends of the longitudinal wall portion of the frame and the outer side of the protrusion of the frame in the width direction on the cross section of the side frame in the orthogonal direction.

2. The occupant restraint device for vehicles as described in claim 1, characterized in that, The cover component extends linearly from the longitudinal wall portion of the frame to the outer end of the frame protrusion in the width direction.

3. The occupant restraint device for vehicles as described in claim 1, characterized in that, The cover component has: The rear grounding part is along and in contact with the longitudinal wall of the frame; An inclined portion extends from the rear grounding portion to the outer end of the frame protrusion in the width direction; The front grounding portion extends towards the front of the seat back while contacting the end of the frame protrusion.

4. The occupant restraint device for a vehicle as described in claim 1, characterized in that, The cover component, in a cross-section perpendicular to the side frame in the direction, covers the inner angle formed by the longitudinal wall of the frame and the protrusion of the frame, thereby forming a defined space.

5. The occupant restraint device for a vehicle as described in any one of claims 1 to 4, characterized in that, At least a portion of the cover component has a rigid portion that compresses the plurality of polymer fibers.

6. The occupant restraint device for a vehicle as described in any one of claims 1 to 4, characterized in that, The airbag module is used for the side airbag.

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