JP3144277B2 - Airbag device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag device for a side collision of a vehicle.

[0002]

2. Description of the Related Art As is well known, an occupant is prevented from coming into direct contact with members constituting a vehicle body side wall such as a door and a vehicle body of a vehicle which are deformed by a side collision load generated by a side collision of the vehicle. There have been proposed various airbag devices for shifting the timing at which the deformation of the vehicle body affects the occupant and absorbing the energy of the side collision load.

For example, a conventional airbag device will be described. As shown in FIGS. 6 to 8, a seat 6 including a seat back 4 pivotally supported by a seat cushion 2 is disposed on a vehicle body. As shown in FIGS. 8A to 8C, the seat back 4 is provided with mounting frame portions 10 on both sides of the seat back frame 8, and has a panel 16 that covers the frame 8. The panel 16 holds the cushion material 12 such as urethane.

[0004] Resin case 16 containing airbag 14
Is the panel 16 and the frame 1 via the bracket 18.
0 is attached to at least one of them. When inflated, the airbag 14 is provided so as to be deployed in front of the vehicle in parallel with the occupant.
6 is closed by a hard resin cover 20.

When the vehicle is subjected to a side collision, the air bag 14 is generated by the explosion of a well-known explosive (not shown).
Is unfolded, and the resin case 16 and the cover 20 are connected as shown in FIG.
As shown by arrows Y1 and Y2 in (C), the front side of the vehicle is opened in the vehicle inward direction and divided into two parts, and the airbag 14 is expanded and deployed forward of the vehicle. Another conventional example is disclosed in Japanese Utility Model Laid-Open No. 4-50052.

In the technique described in the publication, as shown in FIGS. 9 to 12, the airbag device 25 is housed inside a side surface of a seat back 29 corresponding to the side door 27, and a seat corresponding to this housing portion is provided. A vertically long opening 31 is formed in the side surface of the back 29. A concave portion 35 for accommodating an airbag 32 (not shown) is formed in a side portion of the seat substrate 33 of the seatback 29 corresponding to the opening 31, and the airbag 32 is folded in the concave portion 35. It is arranged in.

An inflator 37 having a priming agent for instantly inflating the airbag 32 is disposed slightly behind the center of the airbag 32 in a side view when the airbag 32 is inflated. By disposing the inflator 37 at such a rear position of the vehicle, when the airbag 32 is inflated, the side plate 39 is opened by the inflation output from the seat base 33, and is shown by a two-dot chain line in FIGS. The airbag 32 to the side door 2
It is formed so as to expand toward the side 7.

[0008]

[0006] However, FIGS.
In the related art shown in FIG. 8, the airbag 14 is inflated toward the door trim, and the inflated airbag 14 is pushed back by the door trim toward the occupant and urges the occupant toward the passenger compartment. Therefore, there is a problem that the occupant is suddenly suddenly pushed toward the passenger compartment by the urging force of the airbag and receives a large impact.

Further, as shown in FIG. 7, the airbag 14 is also expanded and deployed to the rear of the seat 6 as shown by a two-dot chain line. Therefore, since the airbag 14 can be deployed also in the rear without the occupant's body, effective inflation and deployment of the airbag 14 are not performed. In addition, since the hard resin case 16 containing the airbag 14 having a predetermined length in the front-rear direction of the vehicle is disposed on the side of the seat back 4, the hard resin case 16 is not contacted when the occupant is seated. It feels strange but uncomfortable.

[0010] Further, if a cushion material such as urethane is sufficiently interposed to eliminate this uncomfortable feeling, the space in the front-rear direction of the seat is further reduced, so that the occupant's living space is reduced, and the occupancy is impaired. The technique described in JP-A-4-50052 described as another conventional example is disclosed in FIG.
As shown in FIGS. 12 and 13, the inflated airbag 32 is inflated from the position of the inflator 37 to the side door 27 side and the direction inclined toward the front of the vehicle body.
Is deployed so as to reach the side of the headrest 41 and its lower end reaches near the lower end of the seat back 29, and the airbag 32 can be deployed to the rear of the seat back 29 as shown in FIG. Is configured.

Therefore, this prior art is not applicable to the airbag 32.
Seat back 2 where the occupant's body does not exist at the time of the above deployment
Since the airbag 32 is also deployed behind 9, the effective inflation is not performed. Further, since the lower end of the inflated airbag 32 is inflated until reaching the vicinity of the lower end of the seat back 29, the inflation output of the airbag 32 may be weakened.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and an airbag provided on a side portion of a seat back of a vehicle is inflated and deployed between a side wall of the vehicle body and the seat toward the front of the vehicle body. It is an object of the present invention to provide an airbag device that protects an occupant at least at the time of a side collision of the vehicle.

[0013]

[SUMMARY OF To this end, the air bag device of the present invention according to claim 1, the airbag body provided on the seat bag side portion of a vehicle, the predetermined value or more from the side of the vehicle
When the above impact force is applied, between the seat side and the vehicle body side wall
Receiving the inflated airbag and the inflated airbag
And provided on the side wall of the vehicle body so as to guide the vehicle forward.
And a concave portion .

[0014] air bag device of the present invention described in claim 2, in the configuration of claim 1, wherein said air bag body
Always stored the airbag and caused the impact force
When the airbag is opened by the airbag body
Having the airbag door for applying a biasing force to the front of the vehicle.
And restrict the opening of the airbag door to the rear of the vehicle.
A projection is provided on the vehicle body side wall . The airbag device according to the third aspect of the present invention is the first or the second aspect.
In the configuration described in 2 , the airbag is elongated.
Folded in bellows shape inside the airbag body
In the vertical direction and the vehicle width direction of the vehicle.
A bell that connects the inner walls of the airbag to suppress swelling
At least one restraining means is provided .

According to a fourth aspect of the present invention, in the airbag device according to any one of the first to third aspects, the side wall of the vehicle body is a door trim .

[0016]

[0017]

[0018]

[0019]

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view of a seat showing a seat cushion and a seat back pivotally supported by the seat cushion. FIG. 2 is a diagram schematically showing the relationship between the seat back and the airbag body in FIG. Is 2A-2A in FIG.
2B is an external perspective view of FIG. 2A, FIG. 3 is a schematic exploded view of a main part of the seat back of FIG. 1, FIG. 3A is a frame of the seat back, and FIG. B) is a resin panel attached to the seat frame of FIG.
FIG. 4C is a schematic perspective view of an airbag main body attached to the airbag arrangement portion in FIGS. 3A and 3B, and FIG.
FIG. 5A is a view showing an application example of the turning means of FIG. 5A, and is a lateral partial cross-sectional view. FIG.

As shown in FIG. 1, the seat 50 includes a seat cushion 52 and a seat back 54 pivotally supported by the seat cushion 52 so as to be reclined.
Although not shown, the vehicle body has a generally known configuration and is slidably mounted in the vehicle front-rear direction. The seat back 54 is formed of a frame 56 of the seat back 54 as shown in FIG. 1 and a U-shaped resin panel disposed so as to cover the frame 56 and has a resin panel 58 as shown in FIG. A urethane pad 60 is mounted on the front side in the front-rear direction, and a skin 62 covering these surfaces is provided.

As shown in FIG. 2A, an airbag main body 66 is attached to a gap S between the frame 56 and the urethane pad 60 via a bracket 67 or the like on an attachment frame 64 at one end of the frame 56. It is built into one end of the seat back. The airbag body 66 is mounted such that the opening 68 of the airbag body 66 is inclined obliquely forward of the vehicle as shown in FIG.

As shown in FIG. 2A, the shape of the inside of the urethane pad 60 in the vicinity of one side end is shown in FIG.
A turning means 6 which is formed so as to have a so-called cut cross section 63 inclined obliquely forward of the vehicle substantially parallel to the mounting direction of the vehicle 6 and guides the inflating airbag 74 to the front of the vehicle.
5. The side surface of the resin panel 58 is shown in FIG.
As shown in (B), a lid (airbag door) 72 facing the opening 68 of the airbag body 66 having a thin edge portion 70 formed in a U-shape for cutting and a thin portion 71 for hinges. have.

An airbag 74 is accommodated through an opening 68 of a storage section 66a forming the inside of the airbag body 66. Body side wall 7 facing the side of seat back 54
A door trim 78 of the side door as No. 6 is provided. When the lid 72 is opened, the door trim 7
As shown in FIG. 2 (A), the front end 72a of the lid 72 abuts on the front of the vehicle in an inclined manner as shown in FIG. 2 (A), and the airbag 74 inflates by the door regulating means 75 for regulating the opening position of the lid 72. Are guided to the front of the vehicle and are prevented from expanding to the rear of the vehicle.

Further, as shown in FIG. 2A, when the airbag 74 is inflated and deployed, a belt serving as a restraining means 80 for suppressing the inflation of the vehicle in the vehicle width direction is sewn on the inner wall of the airbag 74, for example. At least one portion is connected by mounting means or the like, and may be provided at a plurality of portions at appropriate intervals in the front-rear direction of the vehicle according to specifications. or,
The belt 80 has a role of forming an elongated shape when the airbag 74 is inflated.

Further, the belt 80 is inclined in the vertical direction or an appropriate direction of the vehicle to connect the inner walls of the airbag 74 to suppress the bulging shape, and to make the bulging shape of the airbag 74 a desired shape. Thus, the present invention can be appropriately applied to the protection of the occupant. Since the embodiment of the present invention is formed as described above, at the time of side collision of the vehicle, FIG.
As shown in (A), when a side impact load acts on the side door, which is the vehicle body side wall 76, and exceeds a predetermined impact value on the side door 76, a well-known detection sensor that is not shown and is generally used is used. Detects and sends the detection signal to the airbag 74,
Output to a connected inflator not shown.

When the inflator receives the detection signal, it explodes the priming agent and sends air into the airbag 74, whereby the airbag 74 is instantly inflated. At this time, as shown in FIG.
With the inflation force of 4, the lid 72 is sheared at the thin edge 70 and the thin portion 71 is opened as a hinge, or after the lid 72 is opened, the airbag 74 is guided in the forward direction of the vehicle and the door trim 78 is door trimmed. 78, it can be expanded and deployed along the inner wall.

Since the belt 80 suppresses the bulging of the vehicle in the vehicle width direction as described above, the airbag 74
Does not come into contact with the occupant in the process up to full deployment, or the contact is relatively small, and the occupant trunk can be accurately restrained by shortening the fully open time of the airbag 74.
In addition, since the tip 72a of the lid 72 abuts against the door trim 78 in a forward direction of the vehicle, the inflation of the airbag 74 to the rear of the seat back 54 where the occupant's body does not exist can be prevented. The full opening time of the airbag 74 can be reduced by effectively using the gas pressure in the upwardly expanding and deploying direction.

In the above-described embodiment, the resin panel 58 is used. However, this may be a metal panel. If the resin or metal panel 58 is not used, the end of the opening 68 of the airbag 66 may be used. The same operation and effect can be obtained by providing a lid that is opened similarly to the lid 72 and disposing the airbag body 66 on the frame portion 64 of the seat back 54 via a bracket or the like.

Further, the above-mentioned lid 72 is a
a is brought into contact with the door trim 78 to regulate the opening position, but as shown by a dotted line in FIG.
A protrusion 72b may be provided on the side surface or the door trim 78. Also, as shown in FIG.
A concave portion 84 extending to the front of the vehicle and an unillustrated inclined member having an appropriate shape are provided, so that the bulging airbag 74 can be provided.
Can be guided by the concave portion 84 and the inclined member and can be developed forward of the vehicle.

At this time, the lid 72 does not necessarily have to be inclined and stopped in the forward direction of the vehicle, and may be any as long as the airbag 74 can prevent the airbag 74 from expanding toward the rear of the vehicle. In the embodiment, the airbag body 66 is shown in FIG.
As shown in (A), the vehicle is inclined in the forward direction of the vehicle and disposed on the seat back 54. However, although not shown, the opening 68 of the airbag 54 may be provided so as to be substantially perpendicular to the door trim 78. The inflated airbag 74 is guided in the forward direction of the vehicle by the recessed portion 84 of the door trim shown in FIG. 4 or the lid 72 shown in FIG. While being able to
Since the bulging of the seat back 54 to the rear can be prevented, the same operation and effect as described above can be obtained.

Further, as shown in FIG. 5, the airbag 74 is arranged so as to be folded in a bellows shape from the opening 68 of the storage portion 66a in the airbag main body 66.
As compared with the case where the airbag 74 is folded into a W shape as shown in FIG.
4 can be shortened and the space for accommodating the airbag 74 can be reduced.

When the airbag 74 is folded into a W shape as in the case of a digestive hose, the gas pressure generated from the inflator cannot be directly transmitted to the lid 72, but the application of the embodiment shown in FIG. As in the example, in the case of the airbag 74 folded in a bellows shape, the gas pressure can be directly transmitted to the lid 72, so that the deployment time of the airbag 74 can be shortened, and the restraint of the occupant's chest can be accurately performed. Can be done.

[0034]

As described above in detail, according to the airbag device of the first aspect of the present invention, the airbag body provided on the side of the seatbag of the vehicle and the predetermined value from the side of the vehicle.
When the above impact force is applied, the seat side
An airbag that inflates between the airbag and the inflated airbag is received.
And provided on the side wall of the vehicle body to guide the vehicle forward.
Since the has a recess, by allowed to inflated to deploy the air bag incorporated in the above-mentioned seat bag side in the vehicle forward from the seat side, the contact between the airbag and the occupant which bulges By preventing as much as possible and shortening the air bag deployment time, the occupant can be securely restrained. In addition, the airbag body inflated from the airbag body
Receiving the airbag and guiding it in front of the vehicle
The bulges due to the guide or recess provided on the side wall of the vehicle
The airbag quickly and effectively in the forward direction of the vehicle.
To quickly and accurately restrain the occupant's torso
Can be

[0035] According to the air bag device of the present invention described in claim 2, in the structure according to claim 1, wherein said air bag
The main body always stores the airbag and generates the impact force.
The air bag is opened by the air bag body when
The airbag door for applying a forward biasing force to the vehicle.
That regulates the opening of the airbag door to the rear of the vehicle.
Is provided on the side wall of the vehicle, so that the side of the seat bulges forward between the side wall of the vehicle and the side wall of the vehicle at the time of a side collision of the vehicle, so that the body of the occupant can be promptly and accurately positioned. Can be constrained. When the airbag is inflated, the seat
Prevent the airbag from inflating to the rear of the bag, and
Swells in the direction to quickly and accurately restrain the occupant's torso
can do.

According to the third aspect of the present invention, in the airbag device according to the first or second aspect , the airbag device has the above configuration.
The bag is formed to be elongated and the airbag body
It is arranged so that it folds in bellows inside,
Inflates by connecting the airbag inner walls in the direction
At least one restraining means consisting of a belt that restrains
Since is provided, suppressing inflating of the air bag
The swelling in the vehicle width direction is regulated by the belt
Deployed in a slender shape, accurately and promptly restrains the occupant's torso
can do. Further, the inflating and deploying airbag can be guided to the front of the vehicle along the side wall of the vehicle, preventing contact between the inflating airbag and an occupant,
The airbag deployment time can be shortened to reliably restrain the occupant.

[0037]

[0038]

[0039]

[0040]

[0041]

[0042]

[0043]

[0044]

The airbag device according to the fourth aspect of the present invention
According to the configuration described in any one of claims 1 to 3,
And the vehicle body side wall is a door trim, so that the vehicle
In the event of a side collision, the airbag is released by the inflation pressure of the airbag,
The bag can be inflated while restraining the occupants.
It can be done quickly and accurately. Also, always use the airbag
Since the opening of the main body is closed and the inside is not visible,
Is improved. In addition, at the time of side collision of the vehicle, the vehicle expands forward.
Get out and restrain the occupant's torso quickly and accurately
Can be. Also, the air built in the seat back side
The bag goes forward between the side of the seat and the side wall of the vehicle
By expanding the airbag,
Is pushed back to the side wall of the vehicle body,
Relieves occupants from being hit by sudden pushes
You. In addition, the impact between the inflating airbag and the occupant is shocked.
Minimize the contact and reduce the time required to deploy the airbag
By doing so, the occupant can be reliably restrained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a seat showing an embodiment to which an airbag device of the present invention is applied.

FIGS. 2A and 2B are diagrams schematically showing a relationship between a seat back and an airbag body in FIG. 1; FIG. 2A is an enlarged cross-sectional view taken along line 2A-2A in FIG. 1; FIG.

FIGS. 3A and 3B are schematic exploded views of main parts of the seat back of FIG. 1, wherein FIG. 3A is a seat back frame, and FIG.
FIG. 4A is a schematic perspective view of a resin panel attached to a frame, and FIG. 4C is a schematic perspective view of an airbag body disposed on a side of a seat back.

FIG. 4 is a view showing an application example of the turning means of FIG. 2 (A), and is a lateral partial sectional view substantially similar to FIG. 2 (A).

FIG. 5 is a schematic view showing an airbag housed state provided in the airbag body of FIG. 4;

FIG. 6 is an exploded perspective view of a sheet showing a conventional example.

FIG. 7 is a cross-sectional view taken along the line 7A-7A of FIG.

8 is a schematic exploded view of a main part of the seat back of FIG. 6, (A) is a seat back frame, and (B) is FIG.
(A) Resin panel attached to frame, FIG.
(C) is a schematic perspective view of the airbag main body disposed on the side of the seat back.

FIG. 9 is a plan view schematically showing the vicinity of a sheet showing another conventional example.

FIG. 10 is a front view of FIG. 9;

FIG. 11 is a schematic perspective view showing the left side of the seat in FIG. 9;

12 is a schematic enlarged view showing the vicinity of a sheet base material on a side surface of the seat back in FIG. 11;

[Explanation of symbols]

 Reference Signs List 50 seat 52 seat cushion 54 seat back 56 frame 58 resin panel 60 urethane pad 62 skin 63 cut section 64 frame part 65 turning means 66 airbag body 66a storage part 67 bracket 68 opening 70 thin edge 71 thin part 72 lid (air Door of bag) 72a Tip of lid 74 Airbag 75 Door regulating means (convex portion 72b) 76 Side wall of vehicle body (side door) 78 Door trim 80 Suppressing means (belt) 84 Recess S gap

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-4-356246 (JP, A) JP-A-4-50052 (JP, A) JP-A-7-228213 (JP, A) JP-A-7-228 215159 (JP, A) JP-A-8-244552 (JP, A) JP-A-8-324372 (JP, A) JP-A-5-71063 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60R 21/16-21/32

Claims (4)

(57) [Claims] An airbag body provided on a side portion of a seat bag of a vehicle is subjected to an impact force of a predetermined value or more from a side of the vehicle.
Air that expands between the side of the seat and the side wall of the vehicle when
A bag and the inflated airbag are received and forward of the vehicle.
A recess provided on the side wall of the vehicle body for guiding.
An airbag device, characterized in that: 2. The air bag main body is always provided with the air bag.
When the bag is stored and the impact force is generated, the airbag is
Opened by the main body, biasing the airbag forward of the vehicle
The airbag having the airbag door for applying force;
The protrusion that regulates the opening of the door to the rear of the vehicle is
The airbag device according to claim 1, wherein the airbag device is provided with: 3. The airbag is formed to be elongated.
And fold it into the bellows shape inside the airbag body.
The airbag is installed in the vertical direction and the vehicle width direction of the vehicle.
A belt that connects the inner walls of the
3. The airbag device according to claim 1, wherein at least one restraining means is provided . 4., characterized in that the vehicle body side wall is a door trim, air <br/> back grayed device according to any one of claims 1 to 3.