JP4933152B2 - Airbag device mounting structure - Google Patents

Description

  The present invention relates to an attachment structure for an airbag device.

  A vehicle such as an automobile is provided with an instrument panel in the front part of the vehicle interior. On the passenger seat side of the instrument panel, an airbag device for the passenger seat is provided as an emergency safety measure. This airbag device for a passenger seat includes an airbag body that is folded and stored in an airbag module disposed inside an instrument panel when an impact load of a predetermined value or more is applied to the vehicle body. Deployed by supplying high-pressure gas from the engine, the air grid member provided on the instrument panel is opened and inflated toward the passenger in the passenger compartment, and the passenger seat passenger is received and restrained from secondary collision with the instrument panel, etc. It protects (for example, refer to Patent Documents 1 and 2).

  The airbag device for a passenger seat includes an airbag grid member and an airbag module that are connected in a vertically floating manner via front and rear connecting portions.

  The air bag grid member is closably attached to the air bag mounting opening formed in the instrument panel, and the air bag module is disposed in the vehicle body side member disposed inside the instrument panel. Is attached via an attachment portion.

  The attachment portion includes a vehicle body side bracket attached to the vehicle body side member, and a module side bracket provided at a lower portion of the airbag module and capable of being bolted to the vehicle body side bracket.

  The airbag device is attached by inserting the airbag device from the outside into the inside of the instrument panel through the airbag attachment opening, attaching the airbag grid member to the airbag attachment opening, and attaching the lower portion of the airbag module to the attachment portion. To be attached to the vehicle body side member.

  In the attachment portion, the vehicle body side bracket attached to the vehicle body side member and the module side bracket provided at the lower portion of the airbag module are bolted.

When the bolts of both brackets are fastened, the airbag module is temporarily held by the temporary holding portion.
Japanese Patent Application Laid-Open No. 07-267034 JP 2000-255359 A

  When the airbag module is lowered by its own weight during the temporary holding described above, and the connecting portion is not in a floating state, the screw hole of the vehicle body side bracket and the screw hole of the module side bracket will be misaligned. As a result, the bolts cannot be fastened well, so that the temporary holding part has a complicated structure so that it can be temporarily held while being positioned in a floating state. However, since the temporary holding portion has a complicated structure, there are problems such as poor workability and high costs.

In order to solve the above-described problem, in the invention described in claim 1, the airbag device includes an airbag grid member and an airbag module that are vertically connected in a floating state via front and rear connecting portions, the airbag lid member, Rutotomoni mounted for closed to the air bag mounting opening formed in the instrument panel, the airbag module, the vehicle body side member which is disposed inside the instrument panel The vehicle body side bracket attached to the vehicle body side member and the module side bracket provided at the lower part of the airbag module and capable of being bolted to the vehicle body side bracket are attached to the vehicle body side member. And an airbag including a temporary holding portion for temporarily holding the airbag module when the bolts of both brackets are fastened. In the mounting structure of the mounting device, the temporary holding portion is provided on the holding surface portion provided on the vehicle body side bracket and on the module side bracket, and by attaching the airbag grid member to the instrument panel, And a temporary upper part that protrudes downward from the upper part, and a provisional part formed on the holding surface part. And a projecting portion that causes a feeling of moderation by being dropped into the pit hole portion and that causes both the front and rear connecting portions to be in a floating state, and the vehicle body side bracket and the module side bracket each have a vertical surface portion. In addition, the holding surface portion and the riding portion extend from the vertical surface portions toward the rear of the vehicle, respectively, and the front-rear dimensions of the drop hole portion and the projection portion are the same. Is characterized in the mounting structure of Kunasare was airbag device.
According to a second aspect of the present invention, the ride-up portion is formed by cutting and raising the vertical surface portion of the module-side bracket to the rear side, and for raising the ride-up portion in the vertical surface portion of the module-side bracket. The width dimension of the notch part is equal to the width dimension of the holding surface part.

According to the invention of claim 1, the temporary holding portion is provided on the holding surface portion provided on the vehicle body side bracket and on the module side bracket, and is mounted on the instrument panel of the air bag grid member on the holding surface portion. And a provisional upper part that puts the front and rear connecting parts into a one-floating state, and a temporary holding part protrudes downward from the riding part to the pit part. By being provided with a protrusion that generates a moderation feeling and that causes the front and rear connecting portions to float in both directions, the temporary holding portion can be made simple and inexpensive. In addition, since it is only necessary to check the moderation feeling by placing the upper part on the holding surface part and dropping the projection part into the hole part, temporary holding is easy even in difficult-to-see places, and positioning can be performed reliably. Therefore, workability can be improved. Further, by providing the protrusion on the riding part, it is possible to ensure the supporting rigidity for the airbag module on the riding part.
At this time, the vehicle body side bracket and the module side bracket each have a vertical surface portion, and the holding surface portion and the riding section extend from the respective vertical surface portions toward the rear of the vehicle, so that the protruding portion becomes the pit portion. Position restriction in the up-down direction can be performed between the holding surface portion and the riding section when dropped.
In addition, since the front and rear dimensions of the drop hole part and the protrusion part are made equal, the protrusion part is dropped into the drop hole part, thereby making it possible to regulate the position in the front-rear direction.
According to the second aspect of the present invention, the width dimension of the notch portion for raising and lowering the riding portion in the vertical surface portion of the module side bracket and the width dimension of the holding surface portion are made equal, thereby restricting the position in the vehicle width direction. Can be performed.

  For the purpose of making the temporary holding portion simple, inexpensive and easy to work, the temporary holding portion is provided on the holding surface portion provided on the vehicle body side bracket and the module side bracket, and the air bag grid member And mounting on the instrument panel so as to ride on the holding surface part and place the front and rear connecting parts in a one-floating state, and the temporary holding part includes a fall hole part formed on the holding surface part, By projecting downward from the upper part and being dropped into the pit, it is realized by means of providing a projecting part that generates a feeling of moderation and has both the front and rear connecting parts in a floating state.

  Hereinafter, embodiments embodying the present invention will be described together with illustrated examples.

  1 to 9 show an embodiment of the present invention.

  First, the configuration will be described. A vehicle such as an automobile is provided with an instrument panel 1 as shown in FIG. There are various types of instrument panels 1. In this case, the instrument panel 1 is a lower part (instrument panel lower part) divided into upper and lower parts. The instrument panel 1 may be an instrument panel upper part, a non-divided (integrated) instrument panel lower part, or the like. As shown in FIG. 2, an airbag device 2 for the passenger seat is provided at a portion on the passenger seat side of the instrument panel 1 as safety means in an emergency.

  As shown in FIG. 3, the airbag device 2 for the passenger seat includes an airbag grid member 5 and an airbag module 6 that are connected to each other in a floating state via front and rear connecting portions 3 and 4. Yes. The airbag grid member 5 is disposed on the upper side, and the airbag module 6 is disposed on the lower side.

  Here, the front and rear connecting portions 3 and 4 are a hook portion 7 and a locking hole 8, respectively. And it is comprised so that it can float by forming the clearance gap between the up-down direction between the hook part 7 and the locking hole 8. FIG. The airbag module 6 is formed in a metal container shape that extends horizontally in the vehicle width direction 10 and has an upper surface opened. Although not particularly illustrated, the airbag module 6 has a folded airbag. A main body and an inflator that generates high-pressure gas are housed up and down. The hook portion 7 is provided in the vicinity of the upper edge portion on the front and rear surfaces of the airbag module 6. Further, the locking hole 8 is provided at a position corresponding to the hook portion 7 on the front and rear surfaces of the mounting leg portion 11 integrally formed so as to extend from the back surface side of the airbag grid member 5. Here, the hook portion 7 is outward and the tip is downward, and is inserted into and locked from the lower side with respect to the locking hole 8 from the inner side. The mounting leg 11 surrounds the vicinity of the upper edge of the airbag module 6 and has a function of guiding the airbag body toward the center of the airbag grid member 5 when deployed. Moreover, the attachment leg part 11 is formed toward the direction which inclines a little back rather than the perpendicular upper direction. The direction of the mounting leg portion 11 is the bulging direction of the airbag body.

  The airbag grid member 5 is made of resin, and is attached to a portion of the airbag attachment opening 15 formed in the instrument panel 1 so that the airbag attachment opening 15 can be closed. For this attachment, locking claws 16 and 17 that can be locked on the back surface of the airbag attachment opening 15 or in the vicinity thereof are provided at least on the front and rear or upper and lower edges of the airbag grid member 5. The airbag grid member 5 is attached to the airbag attachment opening 15 so as to be substantially flush with the instrument panel 1. For this purpose, a stepped portion having a step amount substantially equal to the thickness of the airbag grid member 5 and capable of locking and holding the peripheral portion of the airbag grid member 5 from below is provided at the peripheral portion of the airbag mounting opening 15. It is done. A split groove for defining a door portion that is opened by the expansion of the airbag body is formed in a portion inside the mounting leg portion 11 on the back surface side of the airbag grid member 5.

  On the other hand, the airbag module 6 is attached to a vehicle body side member 20 disposed inside the instrument panel 1 via an attachment portion 21. The vehicle body side member 20 is a strength member that extends substantially in the vehicle width direction 10 and connects the left and right vehicle body panels. The vehicle body side member 20 is usually called a steering support member or the like by being used to support the steering column. In this case, the vehicle body side member 20 is disposed slightly in front of the airbag attachment opening 15 below the airbag mounting opening 15.

  As shown in FIG. 4, the attachment portion 21 is provided on the vehicle body side bracket 22 attached to the vehicle body side member 20 and on the lower portion of the airbag module 6 as shown in FIG. 5. A module side bracket 23 that can be bolted is provided. The vehicle body side bracket 22 is attached to a rear portion of the vehicle body side member 20, and the module side bracket 23 is provided at a position corresponding to the vehicle body side member 20 below the airbag module 6. The vehicle body side bracket 22 and the module side bracket 23 are respectively attached to the vehicle body side member 20 and the airbag module 6 by welding, bolt fixing, or the like. In this case, the vehicle body side bracket 22 and the module side bracket 23 each have a substantially U-shaped cross-sectional shape with the front opened when viewed from above, and the module side bracket 23 can hold the vehicle body side bracket 22. It is formed in a large size. And the U-shaped intermediate part of the vehicle body side bracket 22 and the module side bracket 23 is made into the vertical surface parts 24 and 25 used as a contact fixing surface. The vertical surface portions 24 and 25 are substantially directed in the direction in which the airbag body is inflated by the mounting leg portion 11. Screw holes 26 and 27 are formed at corresponding positions of the vertical surface portions 24 and 25, respectively. In this case, two screw holes 26 and 27 are provided apart from each other on the left and right. For example, a weld nut or the like is attached to the back side of the screw hole 26.

  Further, as shown in FIGS. 4 to 6, a temporary holding portion 31 that temporarily holds the airbag module 6 is provided when the bolts of the brackets 22 and 23 are fastened.

  In this embodiment, the temporary holding portion 31 is provided on the holding surface portion 32 provided on the vehicle body side bracket 22 and the module side bracket 23, and is held by attaching the airbag grid member 5 to the instrument panel 1. Riding on the surface portion 32 is provided with an upper portion 33 that places the front and rear connecting portions 3 and 4 in a single floating state (see FIG. 9).

  In this case, the holding surface portion 32 extends substantially rearward from an intermediate portion of the left and right screw holes 26 in the vertical surface portion 24 of the vehicle body side bracket 22. Similarly, the riding portion 33 extends substantially rearward from the middle portion of the left and right screw holes 27 in the vertical surface portion 25 of the module side bracket 23. In this case, the holding surface portion 32 and the riding portion 33 are formed by cutting up part of the vertical surface portions 24 and 25 to the rear side. The bending direction of the holding surface portion 32 and the riding portion 33 is substantially perpendicular to the bulging direction of the airbag body by the attachment leg portion 11. Moreover, when the riding part 33 gets on the holding | maintenance surface part 32, the connection part 4 of the rear side is floated. Further, a climbing guide 34 is formed at the front end (rear end) of the holding surface portion 32 so as to be bent slightly downward so that the riding section 33 can be easily climbed.

  Further, the temporary holding part 31 is projected downward from the drop hole part 35 formed on the holding surface part 32 and the riding part 33 and dropped into the drop hole part 35, thereby generating a feeling of moderation and the front and rear. The connecting parts 3 and 4 are both provided with a projecting part 36 that floats.

  In this case, the drop hole portion 35 is a rectangular hole facing in the front-rear direction and the vehicle width direction 10. The protrusion 36 is a vertical bead formed by bending the riding portion 33 substantially downward (bending out of plane). This vertical bead extends in the front-rear direction.

  Regarding the position restriction in the vehicle width direction 10, as shown in FIG. 6, the width dimension of the holding surface portion 32 and the width dimension of the left and right cut portions 41 for raising the ride-up portion 33 are substantially equal. Thus, the holding surface portion 32 is guided and regulated by the cut portion 41. At this time, rounded portions 42 are provided at the entrance portions (lower portions) of the left and right cut portions 41 for easy and reliable introduction.

  Further, the position restriction in the vertical direction is set so as to be performed between the holding surface portion 32 and the riding portion 33 when the projection portion 36 is dropped into the drop hole portion 35.

  Further, the position restriction with respect to the front-rear direction is performed by dropping the projection 36 into the hole 35. For this purpose, the longitudinal dimension of the drop hole part 35 and the longitudinal dimension of the vertical bead that is the projection part 36 are set to be substantially equal.

  Next, the operation of this embodiment will be described.

  The airbag device 2 for the passenger seat includes an airbag body that is folded and stored in an airbag module 6 disposed inside the instrument panel 1 when an impact load of a predetermined value or more is applied to the vehicle body. The air-grid member 5 is deployed by supplying high-pressure gas from the inflator, and the airbag grid member 5 provided on the instrument panel 1 is opened and inflated toward the passenger in the passenger compartment. Constraint protection to prevent collision.

  The airbag device 2 is attached by inserting the airbag device 2 from the outside into the instrument panel 1 through the airbag attachment opening 15 as shown in FIGS. The member 5 is attached to the airbag attachment opening 15 and the lower portion of the airbag module 6 is attached to the vehicle body side member 20 via the attachment portion 21.

  The attachment of the airbag grid member 5 to the airbag attachment opening 15 is usually carried out with an attachment locus such that the front locking claw 16 is locked first and then the rear locking claw 17 is locked. . Along with this, the airbag module 6 (the module side bracket 23) is also brought close to the vehicle body side member 20 (the vehicle body side bracket 22) according to the attachment locus.

  In the mounting portion 21, the vertical surface portions 24 and 25 of the vehicle body side bracket 22 attached to the vehicle body side member 20 and the module side bracket 23 provided in the lower part of the airbag module 6 are brought into contact with each other and bolted. .

  When the bolts of the brackets 22 and 23 are fastened, the air bag module 6 is temporarily held by the temporary holding portion 31.

  That is, as shown in FIG. 9, the riding portion 33 of the module side bracket 23 is placed on the holding surface portion 32 of the vehicle body side bracket 22 with the air bag grid member 5 attached to the instrument panel 1. In this state, the front and rear connecting portions 3 and 4 are in a single floating state. In this case, the rear connecting portion 4 is floated.

  Next, by pushing the module side bracket 23 to the back side, as shown in FIG. 3, the projecting portion 36 projecting downward from the riding portion 33 is dropped into the fall hole portion 35 formed in the holding surface portion 32. A sense of moderation occurs. As a result, the front and rear connecting portions 3 and 4 are both floated, and the screw hole 26 of the vehicle body side bracket 22 and the screw hole 27 of the module side bracket 23 are all in the vehicle width direction 10, the vertical direction, and the front and rear direction. Is positioned.

  As described above, according to this embodiment, the temporary holding portion 31 is provided on the holding surface portion 32 provided on the vehicle body side bracket 22 and the module side bracket 23, so that the air bag grid member 5 is attached to the instrument panel 1. The mounting portion 33 is mounted on the holding surface portion 32 to mount the front and rear connecting portions 3 and 4 in a single floating state, and the temporary holding portion 31 is formed in the holding surface portion 32. And a projecting portion 36 that protrudes downward from the riding portion 33 and is dropped into the pit 35 to generate a moderation feeling and to make the front and rear connecting portions 3 and 4 both float. Thus, the temporary holding portion 31 can be made simple and inexpensive.

  In addition, since the riding portion 33 is placed on the holding surface portion 32 and the protruding portion 36 is dropped into the pit portion 35 to check the moderation feeling, temporary holding is easy even in places where it is difficult to see, and positioning is ensured. As a result, workability can be improved. For example, one-handed work can be performed.

  In addition, by providing a protrusion 36 such as a vertical bead on the riding portion 33, the rigidity of the riding portion 33 can be increased and the supporting rigidity of the riding portion 33 with respect to the airbag module 6 can be ensured.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are only examples of the present invention, and the present invention is not limited to the configurations of the embodiments. Needless to say, design changes and the like within a range not departing from the gist of the invention are included in the present invention. Further, when a plurality of embodiments and modifications are shown, it is a matter of course that these possible combinations are included.

It is a partial perspective view of the instrument panel to which the airbag apparatus concerning the Example of this invention is attached. It is a front view of FIG. 1 with which the airbag apparatus was attached. FIG. 3 is a side sectional view of FIG. 2. It is a perspective view which shows a vehicle body side bracket. It is a perspective view which shows a module side bracket. It is a perspective view which shows the state which combined the vehicle body side bracket and the module side bracket. It is an attachment process figure of FIG. FIG. 8 is an attachment process diagram following FIG. 7. It is an attachment process figure following FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument panel 2 Airbag apparatus 3 Connection part 4 Connection part 5 Airbag grid member 6 Airbag module 15 Airbag attachment opening part 20 Car body side member 21 Attachment part 22 Car body side bracket 23 Module side bracket 31 Temporary holding part 32 Holding surface part 33 Upper part 35 Pitfall part 36 Projection part

Claims (2)

The airbag device includes an airbag grid member and an airbag module that are connected to each other in a floating state via front and rear connecting portions,
The airbag lid member, Rutotomoni mounted for closed to the air bag mounting opening formed in the instrument panel, the airbag module, the vehicle body side member which is disposed inside the instrument panel It is attached via the mounting part,
The mounting portion includes a vehicle body side bracket attached to the vehicle body side member, and a module side bracket that is provided at a lower portion of the airbag module and can be bolted to the vehicle body side bracket.
In the mounting structure of the airbag device provided with the temporary holding portion that temporarily holds the airbag module when the bolts of both the brackets are fastened,
The temporary holding portion is provided on the holding surface portion provided on the bracket on the vehicle body side and on the module side bracket. With the riding part which makes a connection part a single floating state,
The temporary holding portion is provided with a pit portion formed in the holding surface portion, and is projected downward from the riding portion and dropped into the pit portion, thereby generating a moderation feeling and a front and rear connecting portion. And a projecting portion that floats both ,
The vehicle body side bracket and the module side bracket each have a vertical surface portion, and the holding surface portion and the riding section extend from the vertical surface portions toward the vehicle rear, respectively.
A structure for attaching an airbag device, wherein the front and rear dimensions of the drop hole part and the protrusion part are equal . The riding part is formed by cutting and raising the vertical surface part of the module side bracket to the rear side,
2. The airbag apparatus according to claim 1, wherein a width dimension of a cut portion for raising and lowering the ride-up portion in a vertical surface portion of the module side bracket is equal to a width dimension of the holding surface portion. Construction.

Images