JP3036122B2 - Mounting structure of airbag unit for side collision - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a side collision airbag unit in an airbag apparatus for protecting an occupant from a secondary collision with a window glass of a side door or a side wall of a vehicle interior at the time of a collision. .

[0002]

2. Description of the Related Art In many cases, an airbag of a side collision airbag apparatus is housed in a case in a folded state and is sealed. This is to prevent foreign matter from entering or adhering to the periphery of the folded airbag. Generally, the airbag is housed in a case together with an inflator that inflates the airbag, and a cover made of aluminum alloy is used. After being sealed to be openable and closable by, for example, the presence or absence of foreign matter is checked by X-ray inspection, and the device is treated as an airbag unit.
The airbag unit is attached to a predetermined portion of the side door or the like while being enclosed in a case and sealed with a lid. When a vehicle collides, the airbag is inflated by gas generated by igniting an inflator and the lid is expanded. The door is opened and deployed between the passenger side wall and the window glass of the side door and the occupant to protect the occupant from a secondary collision.

[0003] As an example of a side collision airbag device which has been developed, a device described in US Pat. No. 4,966,388 can be mentioned. As shown in FIG. 11, an airbag 2 for a side collision is accommodated in an upper part of a side door 1 of a vehicle inside a vehicle cabin. The airbag 2 is folded in a case 3 which also serves as a backup plate. An inflator 4 is attached to the case 3. And side door 1
When a side collision is detected by a collision sensor 6 attached to a flat plate 5 inside, the inflator 4 is ignited to generate gas and inflate the airbag 2. The inflating airbag 2 pushes the lid 7 that closes the opening for airbag inflation formed on the side of the side door 1 toward the vehicle interior, and opens the lid 7 toward the interior of the vehicle. Deployed between the window glass 1a and the occupant D to protect the occupant D from a secondary collision.

[0004]

In the case of the side collision airbag device described in the above-mentioned patent specification, the case 3 accommodating the airbag 2 is disposed in the side door 1. Since the reaction force when the inflator 4 is ignited at the time of the collision and the airbag 2 rapidly expands upward is large, the case 3 needs to have a mounting structure that can sufficiently withstand the reaction force when the airbag is inflated. If the support rigidity of the case 3 is insufficient, the case 3
There is a possibility that the airbag 2 may not be deployed at a predetermined position due to a change in the mounting state of the airbag 2 and the airbag 2 may not be deployed at a predetermined position. For example, a mounting reinforcing member is provided so as to surround the periphery of the airbag unit, for example, and is firmly supported on the inner panel via the mounting reinforcing member for mounting. As a result, there is a problem that the weight of the vehicle body increases because the mounting reinforcement is used for mounting the airbag unit. Moreover, since the use of the mounting reinforcing material does not contribute to the improvement of vehicle performance, there is a problem that other door members cannot be reduced in weight.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an aspect in which an airbag unit can be firmly mounted so as to withstand a reaction force when an airbag is inflated, and an increase in weight can be minimized. It is an object of the present invention to provide a mounting structure for a collision airbag unit.

[0006]

As a means for solving the above-mentioned problems, the present invention provides a side collision airbag unit in which a folded airbag and an inflator for inflating the airbag are housed in a case. in the mounting structure, the airbag unit for a side collision, the belt line reinforcement of the side door and the lock reinforcement is fitted to the inside of the corner portion coupled, form a corner portion of Katsuso <br/> The belt line info
And / or at least one of the lock reinforcements.
It is characterized in that you have fixed or one.

Further, in the mounting structure of the air bag unit for a side collision which dedicated and an inflator for inflating the airbag and the airbag in the case, a part of In'napane Le of the side door, at least part of the periphery Convex shape
Are recesses and the reinforcing convex part of the surface is formed, the airbag unit for a side collision in the concave portion is fitted and periphery of the recess
It is characterized that you are fixed to the reinforcing protrusions at the edges.

[0008]

[Action] As described above, the airbag unit for a side collision, forms shapes combined and the corner fitting to the inside of the corner portion of the beltline reinforcement and lock reinforcement of rigid side door is coupled Belt
Low with line and rock reinforcements
Since fixed to either the at Ku or not provided mounting reinforcement at all, or mounted just strongly providing mounting stiffener small amounts, to sufficiently withstand mounting structure in a counter-force during air bag inflation And increase in weight can be minimized.

Also, the inner panel of the side door is bent.
At least a part of the peripheral portion is a reinforcing convex portion having a convex cross section.
The rigidity by forming a concave portion, combined and the peripheral edge of the recess fitting the airbag unit for a side collision in the recess
Since the fixing portion is fixed to the reinforcing convex portion, the mounting structure can sufficiently withstand the reaction force when the airbag is inflated, and the increase in weight can be minimized.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a side collision airbag unit mounting structure according to the present invention will be described below with reference to FIGS.

FIGS. 1 to 4 show the mounting structure of the first embodiment. A front side door 11 has a highly rigid hat-shaped portion formed on the inner surface of an inner panel 12 along a lower edge of a window opening 11a. A belt line reinforce 13 having a cross section is provided in the front-rear direction of the door, and a lock reinforce 14 having a crank-shaped cross section is provided at the rear end side of the door (the right end side in FIG. 1). One end of the belt line reinforce 13 is connected in the middle of the lock reinforce 14 to be connected in a substantially T-shape, and the airbag unit 15 is fitted into a corner portion C where the belt line reinforce 13 and the lock reinforce 14 are connected. It is fixed. Although not shown, the airbag unit 15 houses a folded airbag and an inflator for inflating the airbag.

The angle of one corner 15a of the airbag unit 15 is different from that of the belt line reinforcement 1.
3 and the lock reinforcement 14 are formed in a thin box shape having an angle substantially equal to the inner angle of the lower corner portion C where the T-shape is connected, and both sides sandwiching the one corner portion 15a. Mounting ribs 15b, 15 with bolt holes
c. In addition, a surface that is on the vehicle interior side (front side in FIG. 2) at the time of mounting is closed by a lid 15d so as to be openable and closable. The airbag unit 15 in which one corner 15a is fitted into the corner C without any gap,
The mounting ribs 15b and 15c are fixed to the belt line reinforcement 13 and the lock reinforcement 14 by bolts. Reference numeral 16 denotes the side door 1
1 is an outer panel.

Therefore, as described above, the airbag unit
The Tsu door 15, high rigidity belts line reinforcement 1
3 and the lock reinforcement 14 and are you bound corners C
And fixed to both reinforces 13 and 14
By the child, the air bag unit 15, it is possible to attach the optimal sites for passenger seating position, since the beltline reinforcement 13 and the lock reinforcement 14 is stiffer respectively, without providing a separate reinforcing member However, the mounting structure can sufficiently withstand the reaction force when the airbag is inflated. As a result, the correct deployment posture of the airbag is ensured, and the occupant can be reliably protected.

FIGS. 5 to 8 show a mounting structure according to a second embodiment. A front side door 21 has a horizontally long working opening 22a at the lower portion of an inner panel 22 for mounting a window regulator or the like. The recess between the working opening 22a and the lower edge of the upper window opening 21a is formed by indenting inward in the door thickness.
An upper portion of the concave portion 23 has a hat-shaped reinforcing projection 24 along the lower edge of the window opening 21a, and a lower portion has a hat-shaped reinforcing convex portion 25 along the upper edge of the working opening 22a. An inner reinforcement 26 is welded to the inner surface of the upper reinforcement projection 24, and a lock reinforcement 27 is provided in the vertical direction on the rear end side (right end side in FIG. 5) of the door. One end of the inner reinforce 26 is connected in the middle of the lock reinforce 27 so as to be substantially T-shaped. And a concave portion 2 having reinforcing convex portions 24 and 25 on the upper and lower sides.
An airbag unit 28 is fitted and fixed to the rear end side of the airbag unit 3. The airbag unit 28 includes a folded airbag (not shown) and the airbag unit 28. And an inflator for inflating the inflator.

The airbag unit 28 has a thin box shape, and has mounting ribs 28a and 28b provided with bolt holes at upper and lower sides thereof. In addition, a surface that becomes the vehicle interior side (the front side in FIG. 5) at the time of mounting is closed by a lid 28c so that it can be opened and closed. And the recess 23
Airbag unit 28 fitted to, in a state that the lower surface which is in contact with the upper surface of the lower auxiliary Tsuyototsu portion 25, provided above and below the two mounting ribs 28a, and 28b on the inner surface of the reinforcing protrusions 24 and 25 A mounting bolt 30 is screwed to the weld nut 29. Reference numeral 31 denotes an outer panel of the side door 21.

Therefore, by fitting the airbag unit 28 into the recess 23 having the reinforcing projections 24 and 25 above and below, the airbag unit 28 can be mounted at an optimum position with respect to the seating position of the occupant. The upper and lower reinforcing projections 24 and 25 have high rigidity, and the lower surface of the airbag unit 28 is fixed in contact with the upper surface of the reinforcing projection 25. compared to the structure, the airbag Guyunitto with four corners of 2 8 are all fixed, for receiving the reaction force when the air bag is inflated in terms, of the airbag correct deployment posture occupant is more securely held Protection can be ensured. Furthermore, since the lower surface of the airbag unit 28 and the mounting Li blanking 28b is mounted in contact with the respective two surfaces of the top and the vehicle interior side surface of the reinforcing projections 25, the fastening portion by the mounting bolt 30 Can be reduced.

FIG. 9 shows the mounting structure of the third embodiment. The inner panel 32 of the side door 31 has a large diameter work for facilitating mounting of a window regulator and the like mounted in the door. The opening 32a has an upper portion formed below the belt line reinforce 33 and a rear portion formed along the edge of the lock reinforcement 34 at the rear end of the door.

The airbag unit 35 has a thin box shape, and mounting ribs 35
a, 35b, and a lower mounting rib 35a is fastened to a substantially horizontal brace 36 with both ends attached to the rim of the working opening 32a by a mounting bolt 37, and the upper part thereof is a belt. The work opening 32a is fastened to the line reinforcement 33 by the mounting bolt 37.
It is attached to the rear end side of the inside door.

Therefore, as described above, the upper part of the airbag unit 35 is
Since the lower portion is provided by being fastened to the brace 36, the airbag unit 35 can be mounted substantially in the same manner as in the second embodiment even when the large-diameter work opening 32a is formed in the inner panel 32. The airbag can be mounted at the optimum position with respect to the seating position of the occupant, and the mounting structure can sufficiently withstand the reaction force when the airbag is inflated. Protection can be ensured. In addition, 1
Since it is only necessary to add the brace 36, the increase in vehicle weight can be minimized.

FIG. 10 shows the mounting structure of the fourth embodiment. The inner panel 42 of the side door 41 has
A large working opening 42a for facilitating the work of mounting a window regulator or the like to be installed in the door, an upper opening along the lower part of the belt line reinforce 43, and a rear opening along the edge of the lock reinforcement 44 at the rear end of the door. Thus, it is formed so as to occupy almost the rear half of the door.

The airbag unit 45 has a thin box shape. In FIG. 10, mounting ribs 45a, 45b, and 45c are provided on upper and left and right sides excluding the lower side, and the left mounting rib is provided. 45a to the working opening 42a
The upper and lower ends are attached to the edge of the brace and fastened to a brace 46 provided substantially vertically by a mounting bolt, the upper mounting rib 45b is connected to the belt line reinforcement 43, and the right mounting rib 45c is connected to the lock reinforcement 44. And is attached to the rear end side of the door in the working opening 42a.

Therefore, as described above, the mounting ribs 4 on the three sides of the airbag unit 45 except for the lower side in FIG.
5a, 45b, 45c are fastened to the brace 46, the belt line reinforce 43, and the lock reinforce 44, respectively, so that even if the inner panel 42 has a large-diameter work opening 42a, the third In substantially the same manner as in the embodiment, the airbag unit 48
Can be installed at the optimum position for the occupant's seating position, and can have a mounting structure that can sufficiently withstand the reaction force when the airbag inflates, ensuring the correct deployment posture of the airbag. As a result, the protection of the occupant can be ensured. In addition, one brace 46 is used as a mounting reinforcing material.
, It is possible to minimize the increase in vehicle weight.

[0023]

As described above, the mounting structure of the side collision airbag unit according to the present invention is such that the side collision airbag unit is provided at the corner of the side door where the belt line reinforcement and the lock reinforcement are connected. bell forms form a combined and the corner fitting inside
Tri-reinforce and lock-reinforce
At least one of them, it is possible to provide a highly rigid mounting structure that can sufficiently withstand the reaction force when the airbag is inflated, and to minimize the weight increase because almost no reinforcing member is required for mounting. be able to.

The inner panel of the side door has a peripheral portion.
At least partially forms a recess which is a reinforcing convex part of the convex section, it is fixed to the reinforcing protrusion in the peripheral portions of the engagement and the recess thereof fitted airbag unit for a side collision in the concave portion, the reinforcement of The mounting structure can be firmly mounted without using any members, and can sufficiently withstand the reaction force when the airbag is inflated.

[Brief description of the drawings]

FIG. 1 is a perspective view of a side door showing a first embodiment of a mounting structure of an airbag unit for side collision according to the present invention.

FIG. 2 is a perspective view of an airbag unit.

3 is a III-III line enlarged cross-sectional view of FIG.

4 is a IV-IV line enlarged cross-sectional view of FIG.

FIG. 5 is a perspective view of a side door showing a mounting structure according to a second embodiment of the present invention.

FIG. 6 is a perspective view of an airbag unit.

7 is a VII-VII line enlarged cross-sectional view of FIG.

FIG. 8 is an enlarged view of a main part of FIG. 7;

FIG. 9 is a partially omitted perspective view of a side door showing a mounting structure according to a third embodiment of the present invention.

FIG. 10 is a partially omitted perspective view of a side door showing a mounting structure according to a fourth embodiment of the present invention.

FIG. 11 is an explanatory view showing a mounting structure of a conventional side collision airbag.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Side door 12 Inner panel 13 Belt line reinforce 14 Lock reinforce 15 Airbag unit 16 Outer panel 21 Side door 22 Inner panel 22a Work opening 23 Concave part 24 Reinforcement convex part 25 Reinforcement convex part 28 Airbag unit 31 Side door 32 Inner panel 32a Working opening 33 Brace 34 Airbag unit 41 Side door 42 Inner panel 42a Working opening 43 Brace 44 Airbag unit

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60R 21/20

Claims (2)

(57) [Claims] 1. A mounting structure of an airbag unit for a side collision which dedicated and an inflator for inflating the airbag and the airbag in the case, the air bag unit for a side collision, the belt line reinforcement of the side door fitted inside the corner portion and the lock reinforcement is coupled, said belt line reinforcement which forms the shape of the corner portion of the Katsuso
And at least one of the lock reinforce
Mounting structure of the air bag unit for a side collision, characterized in that it is fixed to one. 2. A mounting structure of a side impact air bag unit housed an inflator for inflating the airbag and the airbag in the case, a part of In'napane Le of the side door, the least of the periphery
Also a concave part is formed, part of which is a reinforcing convex part with a convex cross section,
Do fitted airbag unit for a side collision in the recess
Fixed to the reinforcing projections at the peripheral edge of the recess
Mounting structure of the air bag unit for a side collision, wherein the Iruko.