JP3146851B2 - Strap mounting structure for airbag door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strap mounting structure for an airbag door used for an airbag for inflating an airbag bag body to an occupant when the vehicle suddenly decelerates. The present invention relates to a strap mounting structure for an airbag door to be used.

[0002]

2. Description of the Related Art An airbag device for a passenger's seat is roughly classified into two types: an airbag device installed above a glove box in an instrument panel, and an airbag device installed at the top of an instrument panel. There is a type to be done. In either case, the airbag door is deployed when the vehicle suddenly decelerates, and the airbag bag is inflated toward the occupant seated in the passenger seat.

There are various types of strap mounting structures for determining the amount of deployment of the airbag door. One example of the latter type of strap mounting structure is disclosed in Japanese Patent Laid-Open No. Hei 1-2048.
No. 38 discloses this. Hereinafter, the structure disclosed in this publication will be briefly described.

As shown in FIG. 20, a passenger airbag apparatus 100 includes an airbag case 102 having a hollow interior, in which an inflator 104 and a folded airbag body 106 are provided.
Is housed. Further, the opening 108 of the airbag case 102 is closed by airbag doors 110 and 112 that are continuously arranged vertically. Further, a strap 114 is attached to the upper airbag door 110, and the amount of deployment of the airbag door 110 is determined by the strap 114.
0 does not touch the windshield glass 116.

[0005] Such a strap 114 is generally attached as shown in FIG. That is, anchors 122 are respectively attached to both ends 114A of the strap 114 through a pair of arches 120 formed on the back surface near both ends in the vehicle width direction of the airbag door 110, and these anchors 122 are attached to the airbag case 124. Is fixed to a pin 126 erected on the side wall portion 124A by a nut 128. An anchor 1 is attached to the other end 132A of the strap 132 through an arch 130 formed on the back surface of the airbag door 110 near the front end of the vehicle.
The anchor 134 is fixed to a pin 136 erected on the front wall 124B of the airbag case 124 by a nut 138.

Accordingly, when the vehicle suddenly decelerates, the airbag door 110 is pressed by the inflation of an airbag (not shown), and expands to a predetermined position while being regulated by the straps 114 and 132.

The reason for adopting the strap in this way is as follows.
It is as follows. That is, in a recent vehicle, in order to improve the appearance of the instrument panel 115, the instrument panel 1 that is curved in a plan view is used.
15 may be used. In this case, the airbag door 1
Since the hinge axis of 10 is curved, it is difficult to appropriately deploy the airbag door 110 with a normal hinge structure. Therefore, a hinge structure using the straps 114 and 132 is adopted to solve such a problem.

However, in the above-mentioned strap mounting structure, the ends of the straps 114 and 132 are passed through the long holes 140 and 142 of the anchors 122 and 134, respectively, and then sewn. For this reason, the anchors 12 are attached to the straps 114 and 132 with the airbag door 110 attached.
The productivity was not good because 2,134 had to be sutured.

An object of the present invention is to provide a strap mounting structure for an airbag door that can improve productivity in consideration of the above facts.

[0010]

According to a first aspect of the present invention, there is provided an airbag door strap mounting structure provided with an anchor for mounting a strap to an airbag case, wherein the anchor is overlapped at both ends. It is an overlapping portion fixed to the airbag case by a single fixing means, and the overlapping portion is provided with biasing forces separated from each other.

According to a second aspect of the present invention, there is provided a strap mounting structure for an airbag door having an anchor for attaching a strap to an airbag case, wherein the anchor is overlapped at both ends and air is provided by a single bolt. It is an overlapping portion fixed to the bag case, and the overlapping portion is provided with biasing forces separated from each other.

According to a third aspect of the present invention, there is provided the strap mounting structure for an airbag door according to the first aspect, wherein the overlapping portion is configured to wrap the fixing means, and the wrapping direction is changed. When a load is applied from the strap, the overlapping portion is set to a direction in which the overlapping portion is wound around the fixing means.

According to a fourth aspect of the present invention, there is provided a strap mounting structure for an airbag door having an anchor for attaching the strap to the airbag case, wherein the strap is relatively moved in the longitudinal direction with respect to the airbag door. The strap is temporarily attached to the airbag door by positioning means.

According to a fifth aspect of the present invention, there is provided the airbag door strap mounting structure according to the fourth aspect, wherein the positioning means generates a frictional force between the strap and the airbag door. I have.

According to a sixth aspect of the present invention, there is provided the strap mounting structure for an airbag door according to the fourth aspect, wherein the positioning means is a bent portion attached to the strap.

According to a seventh aspect of the present invention, there is provided an airbag door strap mounting structure in which an arch portion embedded in an airbag door and through which a strap is inserted protrudes from the airbag door, wherein the arch portion is an iron plate insert. And at least the left and right arch portions are formed by an integral iron plate insert.

The present invention according to claim 8 is an airbag door strap mounting structure in which an arch portion embedded in the airbag door and through which the strap is inserted projects from the airbag door, wherein the strap is formed by the arch portion. And a strap guiding means for preventing interference with the edge portion.

According to a ninth aspect of the present invention, there is provided an airbag door strap mounting structure in which an arch portion embedded in the airbag door and through which a strap is inserted protrudes from the airbag door. An airbag guiding means for preventing the bag from interfering with the arch portion is provided.

According to a tenth aspect of the present invention, there is provided an airbag door strap mounting structure in which an arch portion embedded in an airbag door and through which a strap is inserted protrudes from the airbag door. In addition to the members, the left and right arch portions are connected by a connecting member having lower rigidity than the arch portion.

[0020] The eleventh aspect of the present invention is the airbag door strap attaching structure according to the tenth aspect, wherein the arch portion is formed of a member having a circular cross section.

According to a twelfth aspect of the present invention, there is provided the strap mounting structure for an airbag door according to the eleventh aspect, wherein the arch portion is formed of a pipe-shaped member and embedded in the airbag door of the arch portion. It is characterized by crushing the processed base.

According to a thirteenth aspect of the present invention, there is provided the airbag door strap mounting structure according to the tenth aspect, wherein an end of the connecting member is extended to insert the arch portion formed in the airbag door base material. Is closed by an end of the connecting member.

[0023]

According to the strap attachment structure for an airbag door of the present invention, the fixed end of the strap can be attached to the anchor even after the fixed end of the strap is sewn to form a loop. That is, the end of the loop-shaped strap can be attached to the anchor by passing between the overlapping portions at both ends of the anchor. This makes it possible to attach the anchor to the strap in the final assembly step. Further, the anchor can be fixed to the airbag case by a single fixing means. For this reason, productivity can be improved. In addition, since the biasing forces which are separated from each other are given to the overlapping portion, loosening can be prevented without using a washer.

According to the second aspect of the present invention, even after the fixed end portion of the strap is sewn to form a loop, the strap can be attached to the anchor. That is, the end of the loop-shaped strap can be attached to the anchor by passing between the overlapping portions at both ends of the anchor. This makes it possible to attach the anchor to the strap in the final assembly step. Further, the anchor can be fixed to the airbag case with one bolt.
For this reason, productivity can be improved. In addition, since the biasing force that is separated from each other in the axial direction of the bolt is given to the overlapping portion, without using a washer,
Loosening can be prevented.

According to the third aspect of the present invention, even when a large load is applied from the strap to the anchor when the bag is deployed, the overlapping portion of the anchor is tightly wound around the fixing means. Since it moves in the direction, productivity can be improved, and a firm fixed state can be achieved.

According to the strap attaching structure for an airbag door of the present invention, before the airbag is deployed,
Since the strap is temporarily fixed at an arbitrary position with respect to the airbag door, the airbag door can be deployed in a predetermined direction. Further, it is possible to prevent the strap from being caught between the airbag door and the airbag case when the door is assembled.

According to the fifth aspect of the present invention, the strap does not relatively move with respect to the airbag door due to a frictional force with a relatively small force. Since the strap moves relative to the airbag door, the position of the strap can be adjusted even after the strap is attached to the airbag door.

According to the sixth aspect of the present invention, the strap can be positioned relative to the airbag door only by providing a bent portion on the strap by pressing or the like. Also,
If the strap is inserted through the arch portion of the airbag door and inserted into the approximate position, positioning can be automatically performed by the bent portion.

According to the seventh aspect of the present invention, the central portion of the airbag door is maximally bent when the airbag door is deployed, but the left and right arch portions are formed by an integral iron plate insert. With the configuration, productivity is improved, and the iron plate insert serves as a reinforcing material at the center of the door. Further, the load input to the arch portion from the strap is dispersed by the iron plate insert.

According to the strap mounting structure for an airbag door of the present invention, since the strap guiding means does not interfere with the edge of the arch and the edge of the arch portion, it is possible to prevent the strap from being damaged. Further, a coating for preventing scratches is not required, and productivity is improved.

According to the ninth aspect of the present invention, the airbag door can be prevented from rubbing against the arch by the airbag guiding means when the airbag is deployed. Also, the coating for preventing the arch portion from being damaged is not required, and the productivity is improved.

According to the strap mounting structure for an airbag door of the present invention, the required strength is secured only in the arch portion, and the connecting member, which also serves as the reinforcement of the door, allows the door to bend to some extent. It is possible to make use of the original characteristics of the door made of steel.

According to the eleventh aspect of the present invention, the cross section of the arch portion is circular and the edge is eliminated, so that the strap can be prevented from being damaged. Also, the coating for preventing the arch portion from being damaged is not required, and the productivity is improved.

According to the strap attaching structure for an airbag door according to the twelfth aspect of the present invention, since the base of the arch is bent along the curvature of the door, it is possible to prevent the fixed end of the arch from being forcedly deformed.

According to the thirteenth aspect of the present invention, the airbag door strap mounting structure can prevent leakage from the slit when urethane foams, thereby improving productivity. In addition, since the irregularities on the surface of the airbag door base material are reduced, the quality of the design surface of the airbag door is stabilized.

[0036]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment will be described below with reference to FIGS. The first embodiment corresponds to one embodiment of the present invention described in claims 1 and 2. Also,
In these figures, an arrow FR appropriately shown indicates a front side of the vehicle, an arrow UP indicates an upper side of the vehicle, and an arrow IN indicates an inner side in the vehicle width direction.

FIG. 3 shows an airbag device 10 for a passenger seat.
Are shown in the activated state. As shown in this figure, a predetermined opening 14 is formed in the instrument panel 12 of the vehicle on the passenger seat side of the top portion 12A, and the airbag device 10 is disposed inside the opening 14. ing. Note that this instrument panel 1
2 is curved along the windshield glass 28, so that the front edge of the opening 14 is also curved.

The airbag device 10 is provided with a substantially box-shaped airbag case 16 in which the top 12A of the instrument panel 12 is open. A cylindrical inflator 18 is provided inside the airbag case 16. Further, around the inflator 18, the airbag bag body 20 is disposed in a folded state (a state shown by a dashed line in FIG. 3).

The inflator 18 generates a large amount of gas when a mechanical ignition type or electric ignition type sensor (not shown) detects a sudden deceleration state of the vehicle. An example of the internal structure of the inflator 18 will be briefly described as follows. A primer (in the case of a mechanical ignition type) or an ignition device (in the case of an electric ignition type) is disposed at one end of the inflator 18 in the axial direction. The device operates. In addition, a transfer agent is provided on the shaft core of the inflator 18, and a gas generating agent is sealed around the transfer agent. Therefore, when the primer is ignited or the ignition device is activated, the gas generating agent burns through the transfer agent to generate a large amount of gas. The generated gas is supplied to the inflator 18.
Through a plurality of gas holes formed in the peripheral surface of the airbag bag 20 in the folded state.

The open side ends of the airbag case 16 accommodating the inflator 18 and the airbag body 20 are bent in directions away from each other (hereinafter, this portion is referred to as a "flange portion 16A"). . Opening end of flange 16 (end of flange 16A)
Is closed by an airbag door 22 formed of a resin such as urethane. Since the airbag door 22 also closes the opening 14 described above, the front end 22A is curved in a plan view similarly to the opening 14.

As shown in FIG. 2, the front end 22A of the above-described airbag door 22 is connected to the front surface 16B of the airbag case 16 by a relatively short strap 24 at a substantially central portion thereof. That is, one end 24A of the strap 24 is attached in a loop around an arch 25 formed on the back surface of the front end of the airbag door 22 and attached by suturing the end.

The other end 24B of the strap 24 is sewn to form a loop, and an anchor 26 is engaged with the end 24B. In addition, strap 2
4 are disposed at the front end 2 of the airbag door 22.
It is preferable to select a part where the distance between 2A and the front surface 46B of the airbag case 16 is the shortest, and a straight part that is not curved in a plan view or a part that curves gently. Thereby, the front end 22A of the airbag door 22
And the front surface 16B of the airbag case 16 are connected only at one local portion.

An anchor 26 attached to the strap 24 is attached by a nut 30 to a weld bolt 28 serving as a fixing means provided on the front surface 16B of the airbag case 16 toward the front of the vehicle.

Further, a rear end portion 22B of the airbag door 22 is provided.
Near both sides and both side walls 16 of airbag case 16
C and 16D are connected to each other by a cloth strap 32. That is, the strap 32 is inserted through a pair of arch portions 34 and 36 formed on the back surfaces of both sides near the rear end portion 22B of the airbag door 22, and both end portions 32A and 32B are respectively formed in a loop shape. Is sutured. An anchor 26 is engaged with these ends 32A and 32B.

The anchor 26 attached to the strap 32 is attached to both side walls 16 C, 1 C of the airbag case 16.
A nut 38 is attached to a weld bolt 37 serving as a fixing means that stands in the vehicle width direction in 6D.

The length of the strap 32 is set to a predetermined length, and the airbag door 22 can be deployed to the state shown in FIG. That is, the strap 32 regulates the deployment angle of the airbag door 22 to a predetermined angle, thereby preventing the rear end portion 22B of the airbag door 22 from contacting the windshield glass 28.

Thus, the airbag door 22 at the time of deployment is
Are supported by the airbag case 16 at three locations (straps 24, 32).

As shown in FIGS. 1 (A) and 1 (B), the anchor 26 is provided with an engaging portion 40 formed of a U-shaped bent wire steel having a circular cross section which engages with the end of the strap. And a pair of long circular plate-shaped mounting portions 42 connected to both ends of the engaging portion 40. The wire steel has a spring effect by annealing.

One end 4 in the longitudinal direction of each mounting portion 42
Both ends 40 of the engaging portion 40 are welded to 2A. The other end in the longitudinal direction of each mounting portion 42 is formed as an overlapping portion 42B.
Are provided with through-holes 44, and the overlapping portions 42B are opposed to each other with a gap 43 so that the through-holes 44 are coaxial.

Therefore, the weld bolt 37 is formed in the through hole 44.
When the nut 38 is tightened, the overlapping portion 42B on the nut 38 side is actuated by the spring effect of the engaging portion 40.
Are elastically deformed toward the other overlapping portion 42B (in the direction of arrow A in FIG. 1B).

The operation of the first embodiment will be described below.
When the vehicle suddenly decelerates, this vehicle sudden deceleration state is sensed by a sensor (not shown). As a result, the primer in the inflator 18 is ignited or the ignition device is activated, so that the gas generating agent burns through the transfer agent. For this reason,
A large amount of gas is generated and flows into the folded airbag body 20 (shown by a dashed line in FIG. 3). Therefore, the airbag body 20 is inflated to expand the airbag door 22.
Is pressed from the inside. Thereby, the airbag door 22
Is deployed toward the windshield glass 28 with the hinge 24 as a center. At this time, the arch part 25 of the airbag door 22 and the front wall part 16B of the airbag case 16 are connected by the strap 24,
Of the airbag case 16 are connected to the side walls 16C, 16D of the airbag case 16 by the strap 32, so that the deployment angle of the airbag door 22 is regulated by the strap 32 extending with a predetermined tension. You.
Accordingly, the airbag door 22 is deployed to the deployment angle shown in FIG. 3, and in this state, the airbag body 20 is inflated toward the occupant sitting on the passenger seat (the state shown by the two-dot chain line in FIG. 3). ).

In the attachment of the strap for the airbag door according to the first embodiment, the ends 24A, 32A and 32B of the straps 24 and 32 can be attached to the anchor 26 even after they are sewn to form a loop. . That is, each end 24A, 3A of the strap 24, 32 formed into a loop through the gap 43 between the two overlapping portions 42B.
2A and 32B can be attached to the anchor 26. As a result, the anchor 26 is attached to the strap 2 in the final assembly process.
4 and 32, and each anchor 26
Can be fixed to the airbag case 16 by one weld bolt 28, 37, respectively. For this reason, productivity can be improved.

When the weld bolt 37 is passed through the through hole 44 of the anchor 26 and the nut 38 is tightened,
A weld bolt 3 is provided on the overlapping portion 42B of the anchor 26.
In the axial direction of FIG. 7, in this case, the urging forces which are separated from each other in the directions indicated by arrows A and B in FIG. .

In the first embodiment, the anchor 26 is
Although the engagement portion 40 and the attachment portion 42, which are separate members, are welded to each other, instead of this, the anchor 26 is formed of a single plate member 48 as shown in FIG. May be bent to form the overlapping portion 48A.

Hereinafter, the second embodiment will be described with reference to FIG. The second embodiment corresponds to one embodiment of the present invention.

FIG. 5 shows an anchor 50 according to the second embodiment. The anchor 50 is made of wire steel having a circular cross section.
It has been. The overlapping portions 50B and 50C formed at both ends of the anchor 50 are curved in a ring shape so as to wind the weld bolt 37 from different directions, and the winding direction is such that when a load is applied from the strap 32, The overlapping portions 50B and 50C are weld bolts 3
7 is tight. That is, the intersecting portion 50D is formed between the engaging portion 50A and the overlapping portions 50B and 50C.

Therefore, when a load is applied from the strap 32, the engaging portion 50A of the anchor 50 bends upward (in the direction of arrow C in FIG. 5) and crosses as shown in the two-dot chain line diagram of FIG. Direction in which the parts 50D approach each other (arrow D in FIG. 5).
Direction). As a result, the overlapping portions 50B, 50C
Move in the direction of winding the weld bolt 37 radially inward (the direction of arrow E in FIG. 5). For this reason,
Even when the load is applied from the strap 32 and the anchor 50 is bent, the overlapped portions 50B and 50C are not
7 and can be firmly fixed.

Hereinafter, a third embodiment will be described with reference to FIG. The third embodiment corresponds to an embodiment of the present invention.

As shown in FIG. 6, in the third embodiment,
The strap 32 is attached to the airbag door 22 so as to be relatively movable in the longitudinal direction, that is, in the vehicle width direction, and is temporarily fixed near the center of the back surface of the airbag door 22 by a tape 52 as positioning means.

Therefore, in the third embodiment, the strap 32 is temporarily fixed to the airbag door 22 at an arbitrary position before the airbag is deployed.
The left and right lengths do not deviate from a predetermined value. Therefore, the airbag door 22 can be deployed in a predetermined direction. In addition, one of the left and right sides of the strap 32 does not become unnecessarily long, preventing the strap 32 from being caught between the airbag door 22 and the airbag case 16 when the airbag door 22 is assembled. it can.

In the third embodiment, the tape 52 is used as the positioning means. However, the positioning means is not limited to the tape, but may be tapping, rivets, tucker, or the like. In the third embodiment, the strap 32 is temporarily fixed near the center of the back surface of the airbag door 22. Alternatively, as shown in FIG.
6 is screwed with a tapping 54 as a positioning means.
Alternatively, the strap 32 may be interposed and temporarily fixed.

The fourth embodiment will be described below with reference to FIGS. The fourth embodiment corresponds to an embodiment of the present invention.

As shown in FIG. 8, the airbag door 22
A strap holding portion 56 as a positioning means is formed substantially at the center of the back surface of the device. Strap holder 56
Extends parallel to the airbag door 22 in the front-rear direction, that is, in a direction crossing the strap 32, and one end 56 </ b> A is connected to the airbag door 22.
The other end 56 </ b> B of the strap holding portion 56 is curved toward the side away from the airbag door 22, so that the strap 32 can be easily inserted between the strap holding portion 56 and the airbag door 22.

As shown in FIG. 9, the airbag door 22
, A projection 58 having a semicircular cross section is formed as positioning means near both sides of the strap holding portion 56. These projections 58 are in the front-rear direction,
The strap 32 extends in a direction intersecting with the strap 32, and does not move in the longitudinal direction (the direction of arrow F in FIG. 9) with a relatively small force due to a frictional force with the protrusion 58 and the strap suppressing part 56. It has become.

On the other hand, when a large force acts, the strap 3
2 moves in the longitudinal direction (the direction of the arrow F in FIG. 9) with respect to the airbag door 22, so that the position of the strap can be adjusted even after the strap 32 is attached to the airbag door 22.

In the fourth embodiment, the projections 58 are provided near both sides of the strap holding portion 56. Instead, as shown in FIG. 10, projections 58 are provided near the arch portions 34 and 36. Part 58, a projection part 58 and an arch part 34,
The strap 32 may be prevented from moving in the longitudinal direction due to a frictional force with the strap 36.

Hereinafter, a fifth embodiment will be described with reference to FIG. The fifth embodiment corresponds to one embodiment of the present invention.

As shown in FIG. 11, the strap 32 has bent portions 60 and 62 as positioning means. These bent portions 60 and 62
When the strap 32 is inserted through the arch portions 34, 36, the bent portions 60, 62 are automatically positioned by engaging with the arch portions 34, 36, respectively. Can be done.

Accordingly, the strap 32 can be positioned with respect to the airbag door 22 simply by attaching the bent portions 60 and 62 to the strap 32 by pressing or the like. Further, if the strap 32 is inserted through the arch portions 34 and 36 of the airbag door 22 and inserted to the approximate position, the positioning can be performed automatically.

In the fifth embodiment, an intermediate portion between the bent portions 60 and 62 of the strap 32 and both end portions 32A and 32B is provided.
Bent portions 63, 64 bent in the opposite direction to bent portions 60, 62
And bent portions 65 and 66 bent in the same direction as the above. Therefore, when the airbag door 22 is closed, the strap 32 is bent at the bent portions 63, 64, 65, and 66 and enters the airbag case, so that the strap 32 is caught between the airbag door 22 and the airbag case. Can be prevented and productivity is improved.

Hereinafter, the sixth embodiment will be described with reference to FIG. The sixth embodiment corresponds to an embodiment of the present invention.

As shown in FIG. 12, iron plate inserts 68 and 70 are embedded in the airbag door 22 in the sixth embodiment. The iron plate insert 68 has a U-shaped base 68.
A and a protruding portion 6 protruding downward from the central portion of the base portion 68A.
8B, and the projection 68B is
(See FIG. 2). In addition, iron plate insert 7
0 is extended in the vehicle width direction, and both end portions 70A, 70
B is bent downward, and both ends 70A and 70B constitute arches 34 and 36 (see FIG. 2), respectively.

Therefore, in the sixth embodiment, each arch portion 25,
Loads input to the plates 34 and 36 (see FIG. 2) are distributed to the area where the iron plate inserts 68 and 70 are embedded.

In the sixth embodiment, the iron plate insert 7
0 at both ends 70A, 70B, respectively.
6 (see FIG. 2), the arch portions 34 and 36 (see FIG. 2) may be alternatively formed by the iron plate insert 68, and the arch portions may be formed at each end of the triangular iron plate insert. 32, 34, and 36 (see FIG. 2) may be configured.

In the sixth embodiment, when the airbag door 22 is deployed, the deflection at the center of the airbag door 22 in the vehicle width direction is maximized, but the left and right arch portions 34 and 36 are integrated with the iron plate insert 70. , The iron plate insert 70 serves as a reinforcing material at the center of the door.

Hereinafter, the seventh embodiment will be described with reference to FIG. The seventh embodiment corresponds to an embodiment of the present invention.

As shown in FIG. 13, in the seventh embodiment, an iron plate insert 7 projecting from an airbag door 22 is provided.
0 end 70A, that is, arch-shaped ridges 72 and 74 as strap guiding means integrally formed with the airbag door 22 with the arch 34 interposed therebetween.
The strap 32 does not interfere with the edge portion 34A of the arch portion 34.

Therefore, in the seventh embodiment, the strap 32
And the edge portion 34A of the arch portion 34 do not interfere,
The damage of the strap 32 can be prevented. Further, a coating for preventing scratches is not required, and productivity is improved.

Although not shown in the drawing, a protruding portion is similarly formed on the other arch portion. Hereinafter, the eighth embodiment will be described with reference to FIG. The eighth embodiment corresponds to an embodiment of the present invention.

As shown in FIG. 14, in the eighth embodiment, an inclined portion as an airbag guiding means is provided in front of the left and right arch portions 34 and 36 of the airbag door 22, that is, on the side where the airbag is deployed. The part 75 is the airbag door 2
2 so that the airbag does not interfere with the arch portions 34 and 36 when the airbag is deployed.

Accordingly, in the eighth embodiment, when the airbag is deployed, it is possible to prevent the airbag from rubbing against the arch portions 34, 36. Also, the coating for preventing the arch portion from being damaged is not required, and the productivity is improved.

The ninth embodiment will be described below with reference to FIG. The ninth embodiment corresponds to an embodiment of the present invention.

As shown in FIG. 15, in the ninth embodiment, the left and right arch portions 3 buried inside the airbag door 22 are provided.
The inserts 76, 78 constituting the left and right inserts 4, 36 are separate left and right members, and the left and right inserts 76, 78 are thinner and thinner than the inserts 76, 78.
Are connected by

Therefore, in the ninth embodiment, only the left and right arch portions 34 and 36 have the required strength, and the airbag door 2
2 and the rigidity of the connecting member 80 is lower than that of the inserts 76 and 78, so that the airbag door 22 is allowed to flex to some extent.
2 original characteristics can be utilized.

Hereinafter, the tenth embodiment will be described with reference to FIG. This tenth embodiment corresponds to an embodiment of the present invention.

As shown in FIG. 16, in the ninth embodiment, each of the arch portions 25, 34, and 36 is formed of a round bar 82 as a member having a circular cross section. , 34, 36 are fixed to each vertex of the substantially triangular insert 84 by arc welding or the like.

Therefore, in the tenth embodiment, the arch 2
Since the cross sections of 5, 34 and 36 are circular and have no edges, the strap can be prevented from being damaged. In addition, a coating for preventing the arch portions 25, 34, and 36 from being scratched is not required, which has an excellent effect that productivity can be improved.

Hereinafter, the eleventh embodiment will be described with reference to FIGS. 17 and 18.
An example will be described. The eleventh embodiment corresponds to an embodiment of the present invention.

As shown in FIG. 17, in the eleventh embodiment, each of the arch portions 25, 34, and 36 is constituted by a pipe-shaped member 86, and the airbag door 2 of the pipe-shaped member 86 is provided.
The fixed ends 86A and 86B at both ends embedded in the inside 2 are crushed and fixed to the insert 84.

Therefore, in the eleventh embodiment, as shown by the two-dot chain line in FIG. 18, the arch portions 25, 34, and 36 extend along the curve of the airbag door 22, that is, the curve of the insert 84 in FIG. Since it bends in the direction of the arrow S, it is possible to prevent the fixed ends 86A and 86B of the pipe-shaped member 86 from being unduly deformed, and to reduce the curvature of the insert 84. This is because if the arch portions 25, 34, 36 are L-shaped and rigid, the bending of the insert 84 when the airbag is deployed tends to absorb the bending force acting on the arch portions 25, 34, 36. When the curvature of 84 decreases, the curvature of the airbag door 22 also decreases, so that interference between the airbag door 22 and the windshield glass can be prevented.

The twelfth embodiment will be described below with reference to FIG. The twelfth embodiment corresponds to an embodiment of the present invention.

As shown in FIG. 19, in the twelfth embodiment, an end 84A of an insert 84 as a connecting member is extended, and this end 84A is connected to the airbag door 22.
Pipe-shaped slit 8 formed in base material 23
8 is closed. The fixed end 86 of the pipe-shaped member 86
A and 86B are fixed to the back surface 84B of the insert 84.

Therefore, in the twelfth embodiment, the urethane can be prevented from leaking from the slit 88 when urethane is foamed at the time of manufacturing the airbag door, and the productivity is improved. Also, the base material 8
4 has less irregularities on the surface 84C.
2C quality is stable. In particular, unevenness during environmental degradation is reduced.

[0094]

As described above, in the strap mounting structure for an airbag door according to the first aspect of the present invention, the anchor is overlapped at both ends and fixed to the airbag case by a single fixing means. Since the overlapping portions are provided with biasing forces that are separated from each other, the overlapping portions have an excellent effect that productivity can be improved.

In the strap mounting structure for an airbag door according to the second aspect of the present invention, both ends of the anchor are overlapped, and the anchor is an overlapping portion fixed to the airbag case with one bolt. Since the overlapping portions are provided with biasing forces that are separated from each other, there is an excellent effect that productivity can be improved.

In the strap mounting structure for an airbag door according to the present invention, the overlapping portion is configured so that the fixing means is involved, and the overlapping direction is such that a load acts from the strap. In addition, since the overlapping portion is set so as to be tightly wound around the fixing means, it is possible to improve productivity and to obtain a strong fixing state.

In the strap attaching structure for an airbag door according to the present invention, the strap is attached to the airbag door so as to be relatively movable in the longitudinal direction, and the strap is attached to the airbag door by the positioning means. On the other hand, since the structure is temporarily fixed, the productivity can be improved, and there is an excellent effect that the strap can be prevented from being caught between the airbag door and the airbag case when the door is assembled.

In the strap mounting structure for an airbag door according to the present invention, since the positioning means generates a frictional force between the strap and the airbag door, the strap is attached to the airbag door. There is an excellent effect that the position of the strap can be adjusted even after the attachment. Further, in the strap mounting structure for an airbag door according to the present invention, since the positioning means is a bent portion attached to the strap, the strap can be prevented from being caught between the airbag door and the airbag case. The performance is improved.

In the strap mounting structure for an airbag door according to the present invention, since the arch portion is formed by an iron plate insert and at least the left and right arch portions are formed by an integrated iron plate insert, productivity is improved. Along with the improvement, the iron plate insert becomes a reinforcement at the center of the door. Further, there is an excellent effect that the load input from the strap to the arch portion is dispersed by the iron plate insert.

In the strap mounting structure for an airbag door according to the present invention, the strap is provided with strap guiding means for preventing the strap from interfering with the edge portion of the arch portion. Can be prevented. In addition, there is an excellent effect that a coating for preventing scratches is not required and productivity is improved.

In the ninth aspect of the present invention, the airbag door strap mounting structure according to the present invention has an airbag guiding portion for preventing the airbag body from interfering with the arch portion when the airbag is deployed. This prevents the airbag from rubbing against the arch. In addition, a coating for preventing the arch portion from being damaged is not required, which has an excellent effect that productivity is improved.

In the strap mounting structure for an airbag door according to the present invention, the left and right arch portions are separate members, and the left and right arch portions are connected by a connecting member having a lower rigidity than the arch portion. With the configuration, only the arch portion secures the required strength, and the connecting member that also serves as the reinforcement of the door has a superior effect that the original characteristics of the resin door can be utilized because the door allows some bending of the door. .

Further, in the strap mounting structure for an airbag door according to the present invention, since the arch portion is formed of a member having a circular cross section, the strap can be prevented from being damaged. In addition, there is no need for a coating for preventing the arch portion from being damaged, which has an excellent effect that productivity can be improved.

In the strap mounting structure for an airbag door according to the present invention, the arch portion is formed of a pipe-shaped member, and the base portion of the arch portion embedded in the airbag door is crushed. Therefore, there is an excellent effect that an unreasonable deformation of the fixed end of the arch portion can be prevented.

According to a thirteenth aspect of the present invention, in the strap mounting structure for an airbag door according to the present invention, the end of the connecting member is extended, and the slit for inserting the arch portion formed in the airbag door base is connected to the connecting member. Since the portion is closed, leakage from the slit at the time of urethane foaming can be prevented, thereby improving productivity.
Further, since the unevenness on the surface of the airbag door base material is reduced, an excellent effect that the quality of the design surface of the airbag door is stabilized is obtained.

[Brief description of the drawings]

FIG. 1A is a perspective view of an anchor of an airbag door strap mounting structure according to a first embodiment of the present invention, as viewed obliquely from the rear of a vehicle, and FIG. 1B is a perspective view of FIG. -B
It is a line sectional view.

FIG. 2 is an exploded perspective view showing the first embodiment of the strap mounting structure for an airbag door according to the present invention, as viewed obliquely from the rear rear side of the vehicle.

FIG. 3 is a side sectional view showing a first embodiment of the strap mounting structure for an airbag door according to the present invention.

FIG. 4 is a perspective view of a modification of the anchor of the first embodiment of the strap attachment structure for an airbag door according to the present invention, as viewed obliquely from the rear rear side of the vehicle.

FIG. 5 is a perspective view of an anchor of the strap mounting structure for an airbag door according to the second embodiment of the present invention, as viewed obliquely from the rear outside of the vehicle.

FIG. 6 is a perspective view showing a third embodiment of the strap mounting structure for an airbag door according to the present invention, as viewed from obliquely outside the rear of the vehicle.

FIG. 7 is a cross-sectional view of a modification of the third embodiment of the strap mounting structure for an airbag door according to the present invention, as viewed from the rear of the vehicle.

FIG. 8 is a perspective view of a fourth embodiment of the strap mounting structure for an airbag door according to the present invention, as viewed from obliquely outside the rear of the vehicle.

FIG. 9 is a sectional view taken along line 9-9 of FIG. 8;

FIG. 10 is a perspective view of a modification of the fourth embodiment of the strap mounting structure for an airbag door according to the present invention, as viewed obliquely from the rear outside of the vehicle.

FIG. 11 is a perspective view of a fifth embodiment of the strap mounting structure for an airbag door according to the present invention, as viewed obliquely outside the rear of the vehicle.

FIG. 12 is a perspective view of a sixth embodiment of the strap mounting structure for an airbag door according to the present invention, as viewed from obliquely outside the rear of the vehicle.

FIG. 13 is a cross-sectional view of a seventh embodiment of the airbag door strap mounting structure according to the present invention, as viewed from the rear of the vehicle.

FIG. 14 is a perspective view showing an eighth embodiment of the strap mounting structure for an airbag door according to the present invention, as viewed from obliquely outside the rear of the vehicle.

FIG. 15 is a cross-sectional view of a ninth embodiment of the strap mounting structure for an airbag door according to the present invention, as viewed from the rear of the vehicle.

FIG. 16 is a perspective view of a tenth embodiment of a strap mounting structure for an airbag door according to the present invention, as viewed from obliquely outside the rear of the vehicle.

FIG. 17 is a perspective view showing an eleventh embodiment of the strap mounting structure for an airbag door according to the present invention, as viewed from obliquely outside the rear of the vehicle.

FIG. 18 is a sectional view taken along line 18-18 of FIG. 17;

FIG. 19 is a cross-sectional view of a twelfth embodiment of the strap mounting structure for an airbag door according to the present invention, as viewed from the rear of the vehicle.

FIG. 20 is a side sectional view showing a structure for attaching a strap for an airbag door according to a conventional example.

FIG. 21 is an exploded perspective view showing a strap mounting structure for an airbag door according to a conventional example, as viewed obliquely from the outside rear of the vehicle.

[Explanation of symbols]

 Reference Signs List 10 airbag device 16 airbag case 20 airbag bag body 22 airbag door 24 strap 25 arch part 26 anchor 28 weld bolt (fixing means) 32 strap 34 arch part 36 arch part 37 weld bolt (fixing means) 40 engaging part 42 mounting part 42B overlapping part 50 anchor 50B overlapping part 50C overlapping part 52 tape (positioning means) 54 tapping (positioning means) 56 strap restraining part (positioning means) 58 protrusion (positioning means) 60 bending part positioning means) 62 Bending part positioning means) 63 Bending part positioning means) 64 Bending part positioning means) 65 Bending part positioning means) 66 Bending part positioning means) 68 Iron plate insert 70 Iron plate insert 72 Raised part (Strap guidance means) 7 Ridges (strap guiding means) 75 inclined portion (airbag guidance means) 80 the connection member 82 (round) bar material (circular cross section of the member) 84 insert (connecting member) 86 pipe-shaped member 88 a pipe-shaped member through slit

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-283147 (JP, A) JP-A-1-204838 (JP, A) JP-A-5-147489 (JP, A) JP-A-7- 164986 (JP, A) JP-A-7-144594 (JP, A) JP-A-6-344852 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60R 21/16-21 / 32

Claims (13)

(57) [Claims] 1. An airbag door strap mounting structure including an anchor for mounting a strap to an airbag case, wherein the anchor is overlapped at both ends and fixed to the airbag case by a single fixing means. A strap mounting structure for an airbag door, wherein the overlapping portion is provided with biasing forces that are separated from each other. 2. An airbag door strap mounting structure having an anchor for mounting a strap to an airbag case, wherein the anchor is overlapped at both ends and fixed to the airbag case with a single bolt. A strap attachment structure for an airbag door, wherein the attachment portion is an overlapping portion, and the overlapping portions are provided with biasing forces separated from each other. 3. The overlapping portion is configured to wind around the fixing means, and the direction of winding is such that when a load is applied from the strap, the overlapping portion winds around the fixing means. The strap mounting structure for an airbag door according to claim 1, wherein: 4. An airbag door strap mounting structure provided with an anchor for mounting the strap to an airbag case, wherein the strap is attached to the airbag door so as to be relatively movable in the longitudinal direction.
The strap mounting structure for an airbag door, wherein the strap is temporarily fixed to the airbag door by positioning means. 5. The strap mounting structure for an airbag door according to claim 4, wherein said positioning means generates a frictional force between the strap and the airbag door. 6. The strap mounting structure for an airbag door according to claim 4, wherein said positioning means is a bent portion attached to a strap. 7. An airbag door strap mounting structure in which an arch portion embedded in the airbag door and through which a strap is inserted protrudes from the airbag door, wherein the arch portion is formed of an iron plate insert and has at least left and right sides. A strap mounting structure for an airbag door, wherein the arch portion is formed by an integral iron plate insert. 8. An airbag door strap mounting structure in which an arch portion embedded in an airbag door and through which a strap is inserted protrudes from the airbag door, and the strap does not interfere with an edge portion of the arch portion. A strap mounting structure for an airbag door, wherein the strap guiding means is provided. 9. An airbag door strap mounting structure in which an arch portion embedded in an airbag door and through which a strap is inserted protrudes from the airbag door, wherein the airbag bag body is connected to the arch portion when the airbag is deployed. An airbag door strap mounting structure, comprising an airbag guiding means for preventing interference. 10. An airbag door strap mounting structure in which an arch portion embedded in the airbag door and through which a strap is inserted protrudes from the airbag door, the left and right arch portions are separate members, and the left and right arch portions are separate members. A strap mounting structure for an airbag door, wherein the arch portion is connected by a connecting member having lower rigidity than the arch portion. 11. The airbag door strap mounting structure according to claim 10, wherein said arch portion is formed of a member having a circular cross section. 12. The strap attachment for an airbag door according to claim 11, wherein the arch portion is formed of a pipe-shaped member, and a base portion of the arch portion embedded in the airbag door is crushed. Construction. 13. The connecting member according to claim 1, wherein the end of the connecting member is extended, and the slit for inserting the arch formed in the base material of the airbag door is closed by the end of the connecting member.
10. The strap mounting structure for an airbag door according to item 0.