JP4852510B2 - Airbag mounting bracket - Google Patents

Description

  The present invention relates to an airbag mounting bracket for mounting an airbag installed in a folded state on an edge of a roof of a vehicle to a vehicle body side.

  2. Description of the Related Art Conventionally, a so-called curtain airbag device is known that protects a passenger's head by deploying an airbag in a curtain shape on a side surface of a vehicle interior when a vehicle collides or rolls over (for example, Patent Document 1). reference). As disclosed in Patent Document 1, an airbag of a conventional curtain airbag device is provided with attachment pieces at a plurality of positions at the upper end of the airbag, and the attachment pieces are attached to the vehicle body via an airbag attachment fitting. It is fixed.

3A and 3B are views showing a conventional airbag mounting bracket that is generally used. FIG. 3A is a perspective view, and FIG. 3B is a side view.
As shown in FIGS. 3 (a) and 3 (b), the conventional airbag mounting bracket 100 is used for inserting and mounting an airbag mounting piece 200 on a substrate portion 110 made of a substantially triangular metal flat plate material. The slit 120, the insertion hole 130 for inserting the bolt 300 for fixing the airbag mounting bracket 100 to the vehicle body mounting portion 400, and the locking piece 140 for rotation prevention are formed by press molding.

4A and 4B are diagrams showing another conventional airbag mounting bracket that is generally used, wherein FIG. 4A is a perspective view, and FIG. 4B is a side view.
As other conventional airbag mounting brackets 500, as shown in FIGS. 4A and 4B, similarly to Patent Document 1, a so-called crank section bent portion (continuous connection portion) 550 is formed on the substrate portion 510. There is what formed. The bent portion 550 bends the central portion of the upper portion of the substrate portion 510 outward to form the substrate portion 510 in a stepped shape.
JP 2005-104234 A

  However, in the conventional airbag mounting bracket 100 as shown in FIG. 3B, when the airbag mounting piece 200 is attached to the vehicle body mounting portion 400 such as a bracket by the bolt 300, the airbag mounting piece 200 is located on the back side of the arrow a. The airbag mounting bracket 100 and the vehicle body mounting portion 400 are sandwiched between the airbag mounting bracket 100 and the vehicle body mounting portion 400. The bag mounting bracket 100 and the bolt 300 may be sandwiched and attached.

  Thus, when the airbag mounting bracket 100 is fixed to the vehicle body mounting portion 400 with the bolt 300, the mounting piece 200 is attached to the vehicle body mounting portion 400 while being sandwiched between the back surface side or the front surface side of the airbag mounting bracket 100. When attached, there is a problem that the tightening force (torque) of the bolt 300 decreases. In this case, the mounting position of the airbag is not stable, and there is a risk of functional loss such as the airbag mounting bracket 100 being detached when the airbag is deployed.

  Further, even when the curtain airbag device disclosed in Patent Document 1 and the airbag mounting bracket 500 as shown in FIGS. When attaching to the part 400, the attachment piece 200 of the airbag may move upward in the direction of the surface of the arrow c and be attached between the airbag attachment fitting 500 and the bolt 300. Therefore, as described above, the airbag mounting bracket 100 fixed to the vehicle body mounting portion 400 with the bolt 300 does not stabilize the tightening force of the bolt 300 and the mounting position of the airbag, and the airbag mounting bracket 100 is mounted when the airbag is deployed. There was a risk of functional loss such as the metal fitting 100 coming off.

  Therefore, the present invention provides an airbag mounting bracket that prevents an airbag mounting piece from being sandwiched between the airbag mounting bracket and the vehicle body when the airbag mounting bracket is fastened to the vehicle body side. Objective.

  In order to solve the above-described problem, the airbag mounting bracket according to claim 1 is an airbag mounting bracket for mounting an airbag installed in a folded state on an edge of a roof of a vehicle to a vehicle body. A slit for inserting the mounting piece formed in the bag; a support portion for supporting the mounting piece inserted through the slit; and an insertion hole for inserting a fastening member to the vehicle body. The slit and the insertion hole Between the two, there is provided a restricting portion that restricts the attachment piece from moving to the insertion hole side.

  According to the first aspect of the present invention, the airbag mounting bracket is provided with a restricting portion that restricts movement of the mounting piece toward the insertion hole between the slit and the insertion hole. When fastening the mounting bracket to the vehicle body, it is possible to prevent the airbag mounting piece from being sandwiched between the airbag mounting bracket and the vehicle body or between the airbag mounting bracket and the fastening member.

  The airbag mounting bracket according to claim 2 is the airbag mounting bracket according to claim 1, wherein the support portion is bent in a crank shape on the vehicle inner side with respect to the base portion in which the insertion hole is formed. In addition, the restricting portion is formed so as to protrude from the base portion toward the support portion, and is formed such that the height of the restricting portion is equal to or greater than the distance between the base portion and the support portion. It is characterized by that.

  According to the second aspect of the present invention, the airbag mounting bracket is formed by bending the support portion into the vehicle interior in a crank shape with respect to the base portion in which the insertion hole is formed. The movement of the mounting piece can be prevented by contacting the crank-shaped bent portion. Further, the restricting portion is formed so as to protrude from the base portion toward the support portion, and the restriction portion is formed so that the height of the restricting portion is equal to or greater than the distance between the base portion and the support portion. Thus, the movement of the mounting piece of the airbag can be prevented.

  The airbag mounting bracket according to claim 3 is the airbag mounting bracket according to claim 1 or 2, wherein the restricting portion is bent so as to protrude from the edge of the slit to the vehicle interior side. It is characterized by comprising a projected piece.

  According to the third aspect of the present invention, the airbag mounting bracket is formed on the airbag mounting bracket by the restricting portion being formed of a projecting piece bent so as to protrude from the edge of the slit to the vehicle interior side. When the slit is press-molded, the restricting portion can be easily formed together with the slit.

  According to the airbag mounting bracket according to the present invention, when the airbag mounting bracket is fastened to the vehicle body side by the fastening member, between the airbag mounting bracket and the vehicle body or between the airbag mounting bracket and the fastening member. The attachment piece of the airbag can be prevented from being caught between the two, and the attachment piece can be attached to the vehicle body side in a stable state.

Next, an example of the airbag mounting bracket according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2.
Hereinafter, the description will be made assuming that the traveling direction of the vehicle is “front”, the backward direction is “rear”, and the vehicle width direction is “left” and “right”. First, before describing the airbag mounting bracket, a vehicle, a vehicle body, and an airbag device provided with the airbag mounting bracket will be described.
FIG. 1 is a schematic side view showing an airbag apparatus including an airbag mounting bracket according to an embodiment of the present invention. 2A and 2B are views showing an airbag mounting bracket according to an embodiment of the present invention, in which FIG. 2A is an enlarged perspective view of a portion A in FIG. 1, and FIG. 2B is a view when the airbag mounting bracket is mounted on a vehicle body fixing bracket. It is a schematic front view which shows a state.

≪Vehicle configuration≫
As shown in FIG. 1, the vehicle 1 includes an airbag device 2 that includes windows on the left and right sides of the vehicle body 11 and includes airbags 3 that are deployed to cover the left and right windows.
In addition, the vehicle 1 should just be a motor vehicle which has a window, and the model etc. of the vehicle 1 are not specifically limited. Hereinafter, the airbag apparatus 2 will be described by taking a passenger car as an example.
Further, the vehicle 1 on which the airbag device 2 is mounted includes, for example, a car having a single row seat of only the front row seat, or two rows or more such as three rows composed of a front row seat, a middle row seat, and a rear row seat. Although the present invention can be used in the same manner for a vehicle having a seat, an embodiment of the present invention will be described below by taking as an example a vehicle 1 having two rows of seats (not shown) including a front row seat and a rear row seat. To do.

<Body structure>
As shown in FIG. 1, the vehicle body 11 includes, for example, a front pillar 13 provided on the front side of a front row seat (not shown) and a center provided near the center between the front row seat (not shown) and the rear row seat. The upper end of the pillar 14 and the quarter pillar 15 and the rear pillar 16 provided on the rear side of the rear row seat are connected by the roof side rail 17 and the floor (not shown) and the roof 12 are connected. . A door opening 11a is provided between the front pillar 13 and the center pillar 14 of the vehicle body 11, and a side door on the front row seat side is disposed in the door opening 11a. Between the center pillar 14 and the quarter pillar 15 of the vehicle 1, there is a door opening 11b, and a side door for the rear row seat is disposed.

<Configuration of roof side rail>
As shown in FIG. 1, the roof side rail 17 is a frame member that forms the periphery of the upper portion 11c of the door openings 11a and 11b. The upper side is joined to the roof 12 (see FIG. 1), and the lower side is the center pillar. 14 is joined to a pillar such as a quarter pillar 15. Each of the roof side rails 17 includes an inner member (not shown), a center member, and an outer member. For example, the airbag mounting bracket 9 is attached to the roof side rail 17 via a vehicle body fixing bracket 10 (see FIG. 2B).

<Roof configuration>
The roof 12 is a member that forms a ceiling portion of the vehicle 1 and includes an interior material (not shown), an inner member, a center member, and an outer member. The lower end portion of the roof 12 and the upper end portion of the roof side rail 17 are joined by welding or the like. On the side of the roof 12, an upper end 3a (see FIG. 2A) of the airbag 3 is disposed.

≪Configuration of airbag device≫
As shown in FIG. 1, the airbag device 2 has door openings 11 a and 11 b or pillars 13 when an impact of a predetermined magnitude or more is applied to the side of the vehicle 1 in a side collision or the like. , 14, 15, 16 is a so-called curtain airbag device that protects the occupant's head and the like by deploying the airbag 3 disposed in the upper portion 11c. The airbag device 2 is disposed along the roof side rail 17 at a portion from the front pillar 13 through the roof side rail 17 to the rear pillar 16, for example.

The airbag device 2 is ignited by an impact signal from a collision detection sensor (not shown), an airbag 3 to be described later, a cover body 4 that is attached by fixing a cover body fixing bracket 8 to the vehicle body 11 with a fixture 7. The apparatus instantly burns the gas generant and generates high-pressure gas to instantly inflate the airbag 3, the metal pipe P connecting the airbag 3 and the inflator 6, the side collision and rollover of the vehicle 1 A collision detection sensor for detecting a force applied from the lateral direction, and an electronic control unit (not shown) for controlling the airbag device 2 are configured.
Since the airbag device 2 has the same configuration and operation on the left and right sides of the vehicle body 11 and operates in the same manner, only the device installed on the right side will be described and the device installed on the left side. The description of is omitted.

≪Airbag configuration≫
As shown in FIG. 1, the airbag 3 is a bag body that is deployed between a window glass of a side door and a seated occupant to restrain and protect the occupant from the side direction. The cloth is formed by sewing a cloth into a substantially bag shape. The airbag 3 is normally folded into a long length and stored in the cover body 4 and restrained by the binding band 5 together with the cover body 4, and the cover body 4 is fixed to the fixture 7 and a clip (not shown). Then, the vehicle body is fixed to the vehicle body 11 side by being fixed to the roof side rail 17 via the vehicle body fixing bracket 10 (see FIG. 2B). Further, the airbag 3 is provided with a strap 31 for fixing the airbag 3 to the vehicle body 11 and an attachment piece 32 on the outer peripheral portion. The airbag 3 is inflated when gas is supplied from the inflator 6 at the time of a collision, breaks the binding band 5, pushes open an interior material (not shown) such as roof lining (not shown), and deploys. After 3 expands, it is formed so that the gas escapes and witheres.

<Configuration of strap>
As shown in FIG. 1, the strap 31 is a string for fixing the airbag 3 to the front pillar 13, and is sewn to the front end portion of the airbag 3.

<Configuration of mounting piece>
As shown in FIG. 1, the attachment piece 32 is a protruding piece for fixing the airbag 3 to the roof side rail 17, and a thick cloth belt-like member is formed in a strap shape (see FIGS. 2A and 2B). Formed. The attachment pieces 32 are installed at two or a plurality of locations in the airbag 3 in a state of projecting to the upper end portion of the inflating portion deployed on the front seat side and the upper end portion of the inflating portion deployed on the rear seat side. Yes.
2 (a) and 2 (b), the attachment piece 32 has a lower end side base end portion 32a fixed to the upper end 3a of the base fabric of the airbag 3 by sewing means, and an upper end side tip end portion 32b. Is pulled out from the pull-out hole 4 a of the cover body 4, inserted into the slit 91 of the airbag mounting bracket 9, and sewed into a substantially ring shape when viewed from the front and attached to the support portion 92.

≪Configuration of airbag mounting bracket≫
As shown in FIG. 1, the airbag mounting bracket 9 includes a plurality of mounting pieces 32 of the airbag 3 housed in the cover body 4 in a folded state at the edge of the roof 12 of the vehicle 1. 2 (b)) for attaching to the vehicle body 11.
As shown in FIGS. 2A and 2B, the airbag mounting bracket 9 to which the mounting piece 32 of the airbag 3 is mounted inserts the fastening member B made of a bolt or the like into the fixing hole 10 a of the vehicle body fixing bracket 10. Then, the nut N is screwed into the fastening member B, thereby being fixed to the vehicle body fixing bracket 10 provided at the vehicle body fixing portion of the vehicle body 11. The airbag mounting bracket 9 includes a slit 91, a support portion 92, an insertion hole 93, a restriction portion 94, a base portion 95, a projecting piece 96, a bent portion 97, and a locking piece 98. Is formed. The airbag mounting bracket 9 is formed, for example, by punching or bending a metal thick plate member such as steel with a press. That is, the airbag mounting bracket 9 is formed by punching the outer peripheral portion of the airbag mounting bracket 9, the slit 91, and the protruding piece 96, the bent portion 97, the protruding piece 96, The locking piece 98 is formed by bending.

<Slit configuration>
The slit 91 is a laterally elongated hole for inserting the attachment piece 32 provided on the upper end 3 a of the base fabric of the airbag 3, and is formed above the support portion 92 at the lower end. The slit 91 is in an oblique state with bent portions 97 formed on the left and right edges.

<Composition of support part>
The support portion 92 is a portion that supports the attachment piece 32 of the airbag 3 inserted through the slit 91, and is provided so as to form a frame around the lower side of the slit 91. A bent portion 97 is continuously formed at both ends of the support portion 92 so as to form a side frame of the slit 91.

<Configuration of insertion hole>
The insertion hole 93 is a hole through which the fastening member B for fixing the airbag mounting bracket 9 to the vehicle body 11 side is inserted, and is formed in the central portion of the base portion 95.

<Composition of the regulation department>
The restricting portion 94 is a stopper that restricts the movement of the attachment piece 32 toward the insertion hole 93, and is provided between the slit 91 and the insertion hole 93. The restricting portion 94 is formed by a protruding piece 96 that is bent so as to protrude from the edge of the slit 91 toward the inside of the vehicle. The restricting portion 94 is formed so as to protrude from the base portion 95 toward the support portion 92, so that the height H of the restricting portion 94 is equal to or greater than the distance L between the base portion 95 and the support portion 92. .

<Configuration of protruding piece>
The projecting piece 96 is a part for forming the restricting portion 94, and is formed by bending 90 degrees in an L shape from the left and right two places on the upper edge of the slit 91 toward the inside of the vehicle. The projecting piece 96 only has to protrude from the lower end of the base portion 95 toward the inside of the vehicle or swell, and another member may be fixed by welding means.

<Configuration of base>
The base portion 95 is a flat portion that forms a surface on which the airbag mounting bracket 9 is in close contact with the vehicle body fixing bracket 10. The base 95 is formed with an insertion hole 93 at the center, a locking piece 98 at the upper end, a slit 91, a protruding piece 96 and a bent portion 97 at the lower end.

<Composition of bending part>
The bent portion 97 is formed by obliquely bending the two portions along the upper edge of the slit 91 formed in the airbag mounting bracket 9 and the vicinity of the lower edge of the slit 91. ing. The bent portion 97 is formed by bending the support portion 92 in a crank shape on the vehicle inner side with respect to the base portion 95 in which the insertion hole 93 is formed.

<Configuration of locking piece>
The locking piece 98 is a detent for preventing the airbag mounting bracket 9 from rotating relative to the vehicle body fixing bracket 10 when and after fixing the airbag mounting bracket 9 to the vehicle body fixing bracket 10. . The locking piece 98 is formed at the upper end portion of the base portion 95 by bending 90 degrees toward the vehicle outer side. The locking piece 98 is engaged with a locking hole 10 b formed in the vehicle body fixing bracket 10.

≪Composition of fastening member≫
The fastening member B is a member for fixing the airbag mounting bracket 9 to the vehicle body fixing bracket 10, and is composed of, for example, a general-purpose bolt. The fastening member B is inserted into the fixing hole 10a of the vehicle body fixing bracket 10 and screwed into the nut N, thereby fixing the airbag mounting bracket 9 to the vehicle body 11 side.

≪Configuration of body fixing bracket≫
As shown in FIG. 2B, the vehicle body fixing bracket 10 is a member for fixing the airbag mounting bracket 9 to the vehicle body 11, and is fixed to the vehicle body 11 such as the roof side rail 17. The vehicle body fixing bracket 10 is formed of a metal flat plate member in which the fixing hole 10a and the locking hole 10b are formed.

≪Composition of cover body≫
As shown in FIG. 1, the cover body 4 is a long member that is substantially U-shaped downward and accommodates the airbag 3 in a folded state along the side of the roof 12 of the vehicle 1. This is a case without a cover made of a synthetic resin extending toward the side. The cover body 4 is installed on the vehicle inner surface of the roof side rail 17 extending from the front pillar 13 to the rear pillar 16 with the opening portion directly below, and is covered with an interior material (not shown) such as roof lining. .

≪Operation of airbag mounting bracket≫
Next, with reference to FIG. 1 and FIG. 2, the operation of the airbag mounting bracket 9 according to the embodiment of the present invention will be described together with the mounting procedure to the vehicle body 11.
In this case, first, the airbag 3 shown in FIG. 1 is folded into a long shape and stored in the cover body 4. Then, with the attachment piece 32 of the airbag 3 pulled out from the lead-out hole 4a (see FIG. 2A) of the cover body 4, a plurality of locations of the airbag 3 and the cover body 4 are respectively held by the binding band 5. Then, the airbag 3 is bound so that it does not fall off from the cover body 4.
Subsequently, the airbag fitting 9 is attached to the attachment piece 32.

  Next, a clip (not shown) formed integrally with the cover body 4 is pushed into a locking hole (not shown) of the roof side rail 17 from the inside of the vehicle so that the cover body 4 is temporarily fixed to the vehicle body 11. Fix it. Then, the strap 31 at the front end of the airbag 3 is fixed to the front pillar 13. As shown in FIG. 2B, the attachment pieces 32 provided at a plurality of positions on the upper end portion of the airbag 3 are fastened to the vehicle body fixing bracket 10 by fastening members B as shown in FIG. Fix to rail 17.

  At this time, even if the mounting piece 32 provided on the upper end 3a of the airbag 3 is loaded with a force to move upward in the direction of the arrow D (see FIG. 2B), the mounting piece 32 is connected to the fastening member B or The restriction portion 94 can prevent the base 95 and the insertion hole 93 that are in close contact with the vehicle body fixing bracket 10 from moving upward. Thereby, it is eliminated that the attachment piece 32 is sandwiched between the fastening member B and the base portion 95 or between the base portion 95 and the vehicle body fixing bracket 10.

  As a result, the fastening member B is maintained in a state where the airbag mounting bracket 9 is fixed to the vehicle body fixing bracket 10 with a strong fastening force. For this reason, the attachment piece 32 is firmly fixed to the vehicle body fixing bracket 10 in a stable state.

  Further, the three cover body fixing brackets 8 attached to the cover body 4 are fixed to the roof side rail 17 by the fixing tool 7. The cover body 4 is covered with roof lining (not shown), and the strap 31, the pipe P, the inflator 6 and each pillar are covered with a pillar garnish (not shown), so that the vehicle body of the airbag 3 and the airbag apparatus 2 is covered. 11 is completed.

  In the airbag mounting bracket 9 fixed to the vehicle body fixing bracket 10 on the vehicle body 11 side in this way, when the vehicle 1 is not loaded with an impact in the side surface portion direction, the locking piece 98 is locked to the locking hole 10b of the vehicle body fixing bracket 10. Therefore, the fastening member B is relaxed by vibrations or the like while the vehicle 1 is running, and the airbag mounting bracket 9 is firmly fixed without rattling. For this reason, the state in which the airbag 3 is folded and accommodated in the cover body 4 is maintained.

  Even when an impact of a predetermined magnitude or larger is applied to the side surface of the vehicle 1 and the airbag 3 is deployed, the airbag mounting bracket 9 maintains the fastening force of the fastening member B. Can be maintained firmly fixed. For this reason, since the airbag mounting bracket 9 can hold the airbag 3 being deployed in a suspended state so that the airbag 3 can be deployed in a predetermined state, the deployment characteristics are stable. Further improved.

  As described above, the airbag 3 firmly fixed to the vehicle body 11 by the airbag mounting bracket 9 is directed to the front left seat (not shown) and the rear row seat (not shown). Expands downward as if a curtain was hung on. Thus, the airbag 3 can restrain and protect the head of the occupant and can suppress the occupant from jumping out of the vehicle.

  Note that the airbag device 2 and the airbag mounting bracket 9 have the same configuration and action on the left side body of the vehicle 1, and when an impact of a predetermined level or more is applied to the right side portion of the vehicle 1. Operates in the same way.

  The present invention is not limited to the above-described embodiment, and various modifications and changes can be made within the scope of the technical idea. The present invention extends to these modifications and changes. Of course.

  For example, the restricting portion 94 only needs to be able to prevent the base end portion 32a of the mounting piece 32 from moving upward in the direction of the arrow D. For example, a convex portion formed in a swollen state or a screw head Alternatively, a bolt head, a rivet caulking portion, and other members may be provided.

  Further, the vehicle body fixing bracket 10 may be omitted. That is, the airbag mounting bracket 9 may be fixed to the vehicle body 11 and may be directly fixed to the vehicle body 11 such as the roof side rail 17.

  The vehicle 1 can be applied to any type of automobile as long as the airbag 3 can be installed on the upper portions 11c of the door openings 11a and 11b.

It is a schematic side view which shows the airbag apparatus provided with the airbag attachment metal fitting which concerns on embodiment of this invention. It is a figure which shows the airbag attachment metal fitting which concerns on embodiment of this invention, (a) is the A section enlarged perspective view of FIG. 1, (b) is a schematic which shows the state when attaching an airbag attachment metal fitting to a vehicle body fixing bracket. It is a front view. It is a figure which shows the conventional airbag attachment metal fitting generally used, (a) is a perspective view, (b) is a side view. It is a figure which shows the other conventional airbag attachment metal fitting generally used, (a) is a perspective view, (b) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Airbag apparatus 3 Airbag 9 Airbag attachment metal fitting 10 Car body fixing bracket 11 Car body 12 Roof 32 Attachment piece 91 Slit 92 Support part 93 Insertion hole 94 Restriction part 95 Base part 96 Protrusion piece 97 Bending part B Fastening member H Restriction Part height L Distance between base and support

Claims (3)

An airbag mounting bracket for mounting an airbag installed in a folded state on the edge of a vehicle roof to a vehicle body,
A slit for inserting the mounting piece formed in the airbag;
A support part for supporting the mounting piece inserted through the slit;
An insertion hole for inserting a fastening member for the vehicle body,
An airbag mounting bracket, wherein a restricting portion that restricts movement of the mounting piece toward the insertion hole is provided between the slit and the insertion hole. With respect to the base portion in which the insertion hole is formed, the support portion is bent and formed in the vehicle interior in a crank shape,
The restricting portion is formed so as to protrude from the base portion toward the support portion, and is formed so that the height of the restricting portion is equal to or greater than the distance between the base portion and the support portion. The airbag mounting bracket according to claim 1, wherein:   3. The airbag mounting bracket according to claim 1, wherein the restricting portion includes a projecting piece that is bent from the edge of the slit so as to project inward of the vehicle.

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