Distal airbag device for vehicle

Abstract

The present disclosure relates to a distal airbag apparatus of a vehicle, the apparatus comprising: an airbag cushion inflated and deployed so as to correspond to one side of an upper body of an occupant at the time of a side collision of the vehicle; an inflator that generates a gas according to an impact detection signal and supplies the gas to the airbag cushion at the time of a side collision of the vehicle; and an airbag cover that accommodates the airbag cushion and the inflator therein, and that is mounted in a backrest of a seat. The airbag cover includes: an inner cover and an outer cover, the inner cover and the outer cover forming a rectangular parallelepiped by being coupled to each other; and a noise prevention member for preventing noise generated at a contact portion of the inner cover and the outer cover when an external force is applied. The noise prevention member is applied to the airbag cover so as to be capable of effectively preventing noise caused by movement of contact portions of the inner cover and the outer cover that are in contact with each other due to external force acting on the airbag cover.

Description

Technical Field

[0001] The present disclosure relates to a distal airbag apparatus for a vehicle, and more particularly to a distal airbag apparatus for a vehicle that protects passengers by preventing collision between passengers at the time of a side collision of the vehicle. Background Art

[0002] Generally, an airbag apparatus of a vehicle is a safety device for protecting passengers by injecting gas into the airbag according to a signal of an impact sensor to quickly inflate the airbag when the vehicle collides.

[0003] The airbag device is mounted on a steering wheel or instrument panel, a seat, a side wall, etc. provided in a vehicle, and is inflated toward the front or side of a passenger to protect the passenger when the vehicle collides.

[0004] That is, the vehicle may be provided with front airbags that deploy in front of the driver and passenger seats, curtain airbags and side airbags that deploy in the direction of a side collision (hereinafter referred to as the "collision side") to protect passengers, and knee airbags for protecting passengers' knees, etc.

[0005] Side airbags include so-called near-side airbags, which are inflated and deployed between the passenger and body parts such as doors and protect the passenger from body parts protruding inwardly due to the impact of a side collision, and far-side airbags or center-side airbags, which restrict the passenger from moving toward the inside of the vehicle due to the reaction of the side collision.

[0006] The far side airbag is deployed between a passenger and a passenger sitting next to the passenger during a vehicle collision to prevent the passengers from colliding with each other, reduce the impact applied to the passenger, and prevent the passenger from being thrown out of the vehicle due to the impact.

[0007] For example, the present applicant has applied for patents by disclosing the configurations of the distal airbag devices in Patent Documents 1 and 2 listed below.

[0008] Meanwhile, in order to perform the above functions, the far-side airbag needs to be able to stably support the passenger and absorb the shock when colliding with the passenger.

[0009] For example, Figure 1 is a diagram showing a state in which a far-side airbag according to the prior art is deployed, Figure 2 Is to show the accommodation Figure 1 FIG. 1 shows a state in which the airbag cover of the airbag cushion is mounted on the seatback, and Figure 3 It is along Figure 2 A cross-sectional view taken along line AA' is shown.

[0010] likeFigure 1 As shown, a prior art far-side airbag device 10 includes: an airbag cushion 20 that inflates and deploys during a side collision of a vehicle to correspond to one side of a passenger's upper body; and an inflator 30 that generates gas through an impact detection signal and supplies the gas to the airbag cushion 20 during a side collision of the vehicle.

[0011] The airbag cushion 20 is folded in a rolled or folded manner and then installed on one side of the backrest frame 12 of the seat 11, with its inner side facing another passenger, and is accommodated in the airbag cover 40 together with the inflator 30.

[0012] As Figure 2 and Figure 3 shown, the airbag cover 40 is composed of an inner cover 41 and an outer cover 42 that are coupled to each other to form an approximate parallelepiped shape, and when the airbag cushion 20 inflates and deploys, the outer cover 42 rotates around a connecting member 43 connected to the rear end of the inner cover 41 to pull the airbag cushion 20 out of the airbag cover 40.

[0013] In this way, the airbag cover 40 applied to the prior art far-side airbag device 10 has a structure in which the inner cover 41 and the outer cover 42 are coupled to each other by contacting each other.

[0014] Generally, the inner cover 41 and the outer cover 42 remain in contact with each other.

[0015] On the other hand, when an external force, vibration, or impact is applied to the airbag cover 40, there is a problem that noise is generated when movement occurs at the contact surface between the inner cover 41 and the outer cover 42.

[0016] (Patent Document 1) Korean Patent Registration No. 10-1916007 (published on November 8, 2018)

[0017] (Patent Document 2) Korean Patent Registration No. 10-1781387 (published on February 20, 2017) SUMMARY OF THE INVENTION

[0018] [Technical Problem]

[0019] An object of the present disclosure is to solve the above problems and provide a far-side airbag device for a vehicle that inflates and deploys between passengers during a side collision of the vehicle to prevent collisions between passengers.

[0020] Another object of the present disclosure is to provide a far-side airbag device for a vehicle that can prevent noise generation by preventing movement generated at the contact surface between an inner cover and an outer cover that are coupled to each other when an external force is applied to the airbag cover that houses the airbag cushion and the inflator.

[0021] [Technical Solution]

[0022] To achieve this object, one aspect of the present disclosure provides a far-side airbag device for a vehicle, including: an airbag cushion that inflates and deploys during a side collision of the vehicle to correspond to one side of a passenger's upper body; an inflator that generates gas according to an impact detection signal during the side collision of the vehicle and supplies the gas to the airbag cushion; and an airbag cover that houses the airbag cushion and the inflator therein, and the airbag cover is installed in a backrest of a seat, wherein the airbag cover includes: an inner cover and an outer cover that are coupled to each other to form a rectangular parallelepiped; and a noise prevention member that prevents noise generated at a contact portion between the inner cover and the outer cover when an external force is applied.

[0023] [Advantageous Effects]

[0024] As described above, according to the far-side airbag device for a vehicle of the present disclosure, a noise prevention member is applied to the airbag cover to obtain an effect of preventing movement of a contact portion where the inner cover and the outer cover come into contact with each other due to an external force acting on the airbag cover.

[0025] Therefore, according to the present disclosure, an effect of effectively preventing noise caused by movement occurring at the contact portion of the airbag cover is obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a view showing a state in which a far-side airbag is deployed according to the prior art,

[0027] Figure 2 is for showing a state in which an airbag cover housing Figure 1 the airbag cushion shown is installed on the backrest,

[0028] Figure 3 is a cross-sectional view taken along line A-A' shown in Figure 2 ,

[0029] Figure 4 is a view showing a state in which a far-side airbag device for a vehicle according to a preferred embodiment of the present disclosure is installed on a backrest frame,

[0030] Figure 5 is for showing Figure 4 a state in which the airbag cover shown is deployed,

[0031] Figure 6 is a cross-sectional perspective view taken along line B-B' shown in Figure 5 and

[0032] Figure 7 is an enlarged cross-sectional view of the portion where the inner cover and the outer cover are joined to each other.

[0033] [Best Mode of the Invention]

[0034] Hereinafter, a far-side airbag device for a vehicle according to a preferred embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

[0035] Figure 4 is a view showing a state in which a far-side airbag device for a vehicle according to a preferred embodiment of the present disclosure is mounted on a backrest frame, Figure 5 is a view showing Figure 4 a state in which the airbag cover shown is deployed, [[ID= is a perspective sectional view along line B-B' shown in ​ and ​ is an enlarged cross-sectional view of the portion where the inner cover and the outer cover are joined to each other.

[0036] Hereinafter, the direction toward the front of the vehicle with the seat 11 as the center is referred to as "front (F)", and the direction opposite to the front, that is, the direction in which the backrest is mounted with the seat 11 as the center is referred to as "rear (B)". In addition, terms indicating directions such as "left (L)", "right (R)", "up (U)", and "down (D)" are defined to indicate each direction based on the front side and the rear side.

[0037] In this embodiment, the configuration of the far-side airbag device 10 shown in ​ is described. Therefore, the same configuration is described by designating the same reference numerals.

[0038] As ​ and ​ shown, a far-side airbag device 10 for a vehicle according to a preferred embodiment of the present disclosure includes: an airbag cushion 20 that inflates and deploys during a side collision of the vehicle to correspond to one side of a passenger's upper body; an inflator 30 that generates gas through an impact detection signal during a side collision of the vehicle and supplies the gas to the airbag cushion 20; and an airbag cover 40 that houses the airbag cushion 20 and the inflator 30 therein and is mounted on the backrest 12 of the seat 11.

[0039] The airbag cushion 20 inflates and deploys forward, upward, and downward from the backrest 12 of the seat 11 so as to correspond to the pelvic region and the entire upper body of the passenger, i.e., the sides of the passenger's abdomen, chest, neck, and head. In this way, the airbag cushion 20 inflates and deploys between the passenger and other passengers (hereinafter referred to as "opposite passengers"), and is used to safely protect the passenger from the collision between passengers caused by the impact of a side collision.

[0040] For this purpose, the airbag cushion 20 includes an inner plate that contacts the right side of the passenger (i.e., the driver) and an outer plate that contacts the left side of the opposite passenger, and the edges of the inner plate and the outer plate can be joined by a stitching method or the like to form a bag shape.

[0041] The airbag cushion 20 is formed to inflate and deploy in an approximately circular, elliptical, or parallelepiped shape, and can inflate and deploy forward, upward, and downward from the right side of the passenger.

[0042] The inflator 30 has the function of igniting the internal gunpowder during a vehicle collision accident and supplying gas through an introduction component provided on one side of the airbag cushion 20.

[0043] Such an inflator 30 is formed in an approximately cylindrical shape, and a pair of stud bolts that penetrate the airbag cover 20 and are coupled to the backrest frame 12 can be installed on one side of the inflator 30.

[0044] As ​ and ​ shown, the airbag cover 40 can include an inner cover 41 and an outer cover 42, and the inner cover and the outer cover are coupled to each other to form an approximately rectangular parallelepiped shape.

[0045] The inner cover 41 and the outer cover 42 can each be formed in an approximately parallelepiped shape with an open surface to be coupled to each other. Here, as ​ shown, it is described that the inner cover 41 is disposed on the left side to contact the backrest frame 12, and the outer cover 42 is disposed on the right side to face other passengers.

[0046] When the airbag cushion 20 inflates and deploys, the outer cover 42 can rotate around a connection member 43 connected to the rear end of the inner cover 41 to pull the airbag cushion 20 outward.

[0047] The inner cover 41 and the outer cover 42 can be formed with a coupling protrusion member 44 and a coupling hole member 45 to be coupled to each other.

[0048] That is, a plurality of coupling hole members 45 can be formed at the front edge, upper edge, and lower edge of the inner cover 41, each coupling hole member having a coupling hole, and a plurality of coupling projection members 44 can be formed on the outer cover 42 to be respectively coupled to the plurality of coupling hole members 45. Here, each coupling projection member 44 can be formed in a hook shape that engages with the coupling hole member 45 so as not to be separated by external vibration or impact when coupled to each coupling hole member 45.

[0049] In addition, a pair of through holes 46 can be formed in the inner cover 41 to allow a pair of stud bolts coupled to the inflator 30 to pass through.

[0050] For example, since a pair of stud bolts are respectively fastened to one side of the inflator 30 so as to be separated at a predetermined interval in the vertical direction, a pair of through holes 46 can be respectively formed at positions corresponding to the pair of stud bolts, that is, substantially at the central portion and the lower portion of the inner cover 41.

[0051] Therefore, when the inflator 30 is connected to the introduction member of the airbag cushion 20, a pair of stud bolts 31 are coupled to the fixing holes formed in the backrest frame 12 through each through hole 46 of the inner cover 41 and can be firmly fixed by fastening nuts.

[0052] Meanwhile, in the prior art, the inner cover 41 and the outer cover 42 are coupled to each other. Therefore, the outer end of the side wall of the inner cover 41 and the inner end of the side wall of the outer cover 42 remain in contact with each other.

[0053] However, if an external force, vibration, or impact is applied to the airbag cover 40 (collectively referred to as "applying an external force" hereinafter), noise may be generated when the outer end of the side wall of the inner cover 41 and the inner end of the side wall of the outer cover 42 alternate with each other.

[0054] That is, in order to couple the inner cover 41 and the outer cover 42, a plurality of coupling projection members 44 and coupling hole members 45 are applied, but when the side walls of the inner cover 41 and the outer cover 42 move due to an external force, the portions where the coupling projection members 44 and the coupling hole members 45 are not provided alternate with each other, thereby generating noise.

[0055] To solve these problems, in this embodiment, a noise-proof member 50 is applied to the side wall portion of the outer cover 41 that contacts the side wall of the inner cover 41.

[0056] As ​ and ​ shown, the noise-proof member 50 can include: a plurality of guide members 51 formed to extend from the side wall of the outer cover 42 to fix the outer surface of the side wall of the inner cover 41; and a support member 52 formed on the inner side of the side wall of the outer cover 42 to fix the inner surface of the side wall of the inner cover 41.

[0057] A plurality of guiding members 51 may be formed to extend from the sidewall of the outer cover 42 to the outer surface, that is, from the rear surface to the right side when viewed in ​ the [specific viewing direction].

[0058] One or more guiding members 51 are disposed between a plurality of coupling protruding members 44, and may be formed in an approximately plate shape with a preset thickness and width to have sufficient rigidity.

[0059] When the inner cover 41 and the outer cover 42 are coupled to each other, the guiding members 51 are disposed toward the left side as ​ shown, to fix the outer surface of the sidewall of the inner cover 41 facing the right side, thereby preventing the inner cover 41 from deforming in the outward direction (i.e., forward) due to an external force.

[0060] A plurality of support members 52 may be provided as support ribs respectively formed along the inner surface of the sidewall of the outer cover 42 in the left - right direction. Thus, the plurality of support members 52 can support the sidewall of the outer cover 42 to enhance the rigidity of the sidewall of the outer cover 42.

[0061] One or more of the plurality of support members 52 may be formed at positions corresponding to each support member 51 on the inner surface of the sidewall of the outer cover 42.

[0062] Each support member 52 may be formed to extend outward from the sidewall of the outer cover 42. Thus, when the inner cover 41 and the outer cover 42 are coupled to each other, the support member 52 can fix the inner surface of the sidewall of the inner cover 41 to prevent the inner cover 41 from deforming in the inward direction (i.e., backward) due to an external force.

[0063] Meanwhile, as ​ shown, a crimping space 53 may be formed between the outer ends (i.e., the left ends) of each guiding member 51 and the support member 52, such that the sidewall of the inner cover 41 is coupled by crimping.

[0064] For this purpose, an inclined surface 54 may be formed at the front end (i.e., the left end) of the support member 52 extending from the sidewall of the outer cover 42, such that the sidewall of the inner cover 41 is pressed in.

[0065] The inclined surface 54 may be formed to incline toward the left rear side, such that the sidewall of the inner cover 41 is inserted and contacts the inclined surface 54.

[0066] Thus, the crimping space 53 becomes narrower from the outer end to the inner end (i.e., from left to right).

[0067] Therefore, the sidewall of the inner cover 41 can be coupled to the crimping space 53 in a wedge shape for firm fixation.

[0068] Next, the coupling relationship and operation method of the far - side airbag device of the vehicle according to the preferred embodiment of the present disclosure will be described.

[0069] First, when the operator connects the inflator 30 to the introduction component of the airbag cushion 20, the airbag cushion 20 is folded by rolling or folding. The folded airbag cushion 20 and the inflator 30 are accommodated in a space formed in the inner cover 41 of the airbag cover 40.

[0070] Next, the outer cover 42 of the airbag cover 40 is rotated 180° around the connecting component 43 to couple the inner cover 41 and the outer cover 42 to each other.

[0071] At this time, a plurality of coupling protruding components 44 provided on the outer cover 42 are respectively coupled to a plurality of coupling hole components 45 formed in the inner cover 41.

[0072] In addition, the side wall of the inner cover 41 is pressed into a crimping space 53 formed between a guiding member 51 and a supporting member 52 of a noise-proof component 50 provided at the outer cover 42.

[0073] The assembled far-side airbag device 10 is installed on one side, that is, the left side, of the backrest frame 12 of the seat 11.

[0074] Therefore, since the side wall of the inner cover 41 is coupled to the noise-proof component 50 applied to the outer cover 42 by a crimping method, deformation can be prevented even when an external force, vibration, or impact is applied to the airbag cover 40 during vehicle travel.

[0075] That is, the guiding member 51 of the noise-proof component 50 prevents the side wall of the inner cover 41 from moving outward, and the supporting member 52 prevents the side wall of the inner cover 41 from moving inward.

[0076] Therefore, according to the present disclosure, noise generated when the contact portions of the inner cover and the outer cover alternate with each other due to an external force during movement can be prevented.

[0077] Through the above process, according to the present disclosure, by applying a noise-proof member to the airbag cover, movement of the contact portions of the inner cover and the outer cover in contact with each other due to an external force applied to the airbag cover can be prevented.

[0078] Therefore, according to the present disclosure, noise caused by movement of the contact portions of the airbag cover can be effectively prevented.

[0079] In the above, the present disclosure made by the present inventor has been specifically described according to the embodiments, but the present disclosure is not limited to these embodiments and can be modified in various ways without departing from the gist.

[0080] ​

[0081] 10: Far-side airbag device of the vehicle

[0082] 11: Seat 12: Backrest frame

[0083] 20: Airbag cushion

[0084] 30: Inflator

[0085] 40: Airbag cover 41, 42: Inner cover and outer cover

[0086] 43: Connecting component 44: Coupling protrusion component

[0087] 45: Coupling hole component 46: Through hole

[0088] 50: Noise-proof component

[0089] 51: Guide member 52: Support member

[0090] 53: Crimping space 54: Inclined surface

Claims

1. A far-side airbag device for a vehicle, comprising: An airbag cushion that inflates and deploys during a side collision of the vehicle to correspond to one side of the passenger's upper body; An inflator that generates gas according to an impact detection signal during the side collision of the vehicle and supplies the gas to the airbag cushion; And An airbag cover that houses the airbag cushion and the inflator therein, and the airbag cover is mounted in the backrest of the seat, Wherein the airbag cover includes: an inner cover and an outer cover, and the inner cover and the outer cover are coupled to each other to form a rectangular parallelepiped; And A noise-proof component for preventing noise generated at the contact portion between the inner cover and the outer cover when an external force is applied.

2. The far-side airbag device for a vehicle according to claim 1, wherein the inner cover and the outer cover are coupled to each other by a plurality of coupling protrusion components and coupling hole components provided at corresponding positions, and The noise-proof component includes a plurality of guiding members formed by extending from the side wall of the outer cover to fix the outer surface of the side wall of the inner cover, and a supporting member formed on the inner side of the side wall of the outer cover to fix the inner surface of the side wall of the inner cover.

3. The far-side airbag device for a vehicle according to claim 2, wherein the guiding member is formed in a plate shape with a preset thickness and width.

4. The far-side airbag device for a vehicle according to claim 2, wherein the supporting member is formed to extend from the side wall of the outer cover, and A crimping space is formed at the outer ends of the guiding member and the supporting member to couple the side wall of the inner cover.

5. The far-side airbag device for a vehicle according to claim 4, wherein one or more of the supporting members are formed at positions corresponding to the guiding members on the inner surface of one side of the inner cover to enhance the stiffness of the side wall of the outer cover.

6. The far-side airbag device for a vehicle according to claim 4, wherein an inclined surface is formed at the front portion of the supporting member that extends from the side wall of the outer cover so that the side wall of the inner cover can be pressed in, and The crimping space narrows as the side wall of the inner cover is coupled.

7. The far-side airbag device for a vehicle according to any one of claims 2 to 6, wherein one or more of the guiding members and the supporting members are provided between the plurality of coupling protrusion components and coupling hole components.

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