JP2001010440A - Head protection airbag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the deployment performance of an airbag body while avoiding an increase in number of part items, and preventing the quality of appearance and replace workability from being lowered. SOLUTION: A metallic clip 50 extending in the longitudinal direction of a vehicle is disposed on the part of the upper end of a C-pillar garnish 38 located on the outside of the vehicle interior, and when an airbag body 16 is inflated and deployed, engaging pawl parts 54, 56 are deformed in a mutually approaching direction, so that engagement between engaging recesses 54A, 56A and engaging holes 44, 46 in a quarter inner panel 18 is reinforced. When the longitudinal center of the upper part of the C-pillar garnish 38 is pressed outward of the vehicle interior, the engaging pawl parts 54, 56 are deformed in a mutually separating direction, so that the engaging recesses 54A, 56A are disengaged from the engaging holes 44, 46 in the quarter inner panel 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head for injecting gas from an inflator when a predetermined high load is applied to a side of a vehicle body, and inflating the airbag bag into a curtain shape below a roof side rail portion by the gas. The present invention relates to a head protection airbag device.

[0002]

2. Description of the Related Art In order to improve the protection performance of the head of an occupant seated in a front seat and a rear seat when a predetermined high load is applied to a side portion of a vehicle body, an airbag bag is moved from at least a C pillar to a roof side rail. A head-protecting airbag device which is arranged so as to straddle and has an inflator attached and fixed to a C-pillar and an airbag bag body and an inflator covered with an interior material such as a C-pillar garnish is DE 29806200U1,
It is disclosed in GB2324068.

[0003] In such a head protection airbag device, when the airbag bag is deployed, the C-pillar garnish corresponds to the deployed portion of the airbag bag so as not to hinder the deployment of the airbag bag. Attach a deployable lid separate from the C-pillar garnish to the part of the C-pillar garnish, and deploy this lid when the airbag is deployed, so that the C-pillar garnish deploys the airbag. There is known a configuration that prevents the C-pillar garnish from being fixed to the C-pillar inner panel (quarter inner panel) due to obstruction or the inflation pressure of the airbag bag.

[0004]

However, when a deployable lid separate from the C-pillar garnish is mounted, a separate lid is required, which increases the number of parts and leads to an increase in cost. The appearance quality is degraded due to the parting line of another lid. Further, there is a problem that the removal is complicated and the replacement workability is reduced.

[0005] In view of the above facts, the present invention is a head-protecting airbag capable of suppressing an increase in the number of parts, preventing a reduction in appearance quality and replacement workability, and improving the deployment performance of the airbag body. The purpose is to get the device.

[0006]

According to the first aspect of the present invention, a curtain-deployed airbag bag is provided at least from a C pillar to a roof side rail, and an inflator is provided to a C side.
In the head protection airbag device in which the airbag bag body and the inflator are covered with an interior material, the pair of front and rear engagement claws are opposed to the upper end of the C pillar garnish base material. The C-pillar garnish is provided integrally in a positional relationship, and the two engagement claws are engaged with a pair of front and rear engagement holes formed above the C-pillar inner panel by pressing the C-pillar garnish from the vehicle interior.

Therefore, when the inflator is activated, the gas introduction portion of the airbag bag inflates and presses the center of the upper end of the C-pillar garnish in the front-rear direction toward the vehicle interior. As a result, the upper end of the C-pillar garnish is elastically deformed into a curved shape and the space for deploying the airbag body is expanded, so that the airbag body can be deployed smoothly. Also, at this time, the upper end of the C pillar garnish receives a force in a direction in which the distance between the front and rear engaging claws becomes narrower, so that the engaging force of the engaging claws is strengthened, and the C pillar garnish is detached from the C pillar inner panel. Can be reliably prevented. Furthermore, the C pillar garnish can be easily attached to and detached from the C pillar inner panel by pressing the center part in the front and rear direction of the upper end of the C pillar garnish from the vehicle interior side to open the front and rear engagement claws. In addition, since there is no need to provide a separate lid as in the prior art, the increase in the number of parts is suppressed, the appearance quality and the ease of replacement are prevented, and the deployment performance of the airbag bag is improved. can do.

According to a second aspect of the present invention, a curtain-deployed airbag bag is attached and fixed from at least a C pillar to a roof side rail, and an inflator is attached to a C pillar. In a head protection airbag device covered with a material, a pair of front and rear pins having an engagement head are integrally provided at an upper end portion of a C pillar garnish base material, and an airbag body corresponding portion and a pin in the base material are provided. The set portion is formed of a softer material than the others, and a pair of front and rear keyhole-shaped engagement holes are formed above the C pillar inner panel corresponding to the pins so that the small diameter holes face each other, and the C pillar garnish is removed from the vehicle interior. It is characterized in that the engaging head of the pin is pressed to lock the engaging hole.

Therefore, when the inflator is activated, the gas introduction portion of the airbag bag inflates and presses the center in the front-rear direction of the upper end of the C pillar garnish toward the vehicle interior. As a result, the upper end of the C-pillar garnish is elastically deformed into a curved shape and the space for deploying the airbag body is expanded, so that the airbag body can be deployed smoothly. Also, at this time, the engaging heads of the pair of front and rear pins at the upper end of the C pillar garnish engage with the small-diameter holes above the C pillar inner panel, so that the engagement force between the two is strengthened and the C pillar garnish is securely removed. Can be prevented. Further, the center of the upper end of the C pillar garnish in the front and rear direction is pressed from the vehicle interior side to open the front and rear pins, and the engaging head of the pin is inserted into the large-diameter hole, so that the C pillar garnish is moved to the C pillar inner. It can be easily attached to and detached from the panel. In addition, since there is no need to provide a separate lid as in the prior art, the increase in the number of parts is suppressed, the appearance quality and the ease of replacement are prevented, and the deployment performance of the airbag bag is improved. can do.

According to a third aspect of the present invention, a curtain-deployed airbag bag is attached and fixed from at least a C pillar to a roof side rail, and an inflator is attached to a C pillar. In a head protection airbag device covered with a material, a pair of front and rear pins having an engaging head are integrally provided at an upper end portion of a C pillar garnish substrate, and a front and rear pin is disposed above a C pillar inner panel corresponding to the pin. A pair of keyhole-shaped engagement holes are formed so that their axes are non-parallel, and a C-pillar garnish is rotated and slid around one of the pins to move the engagement head of the pin into the engagement head. It is characterized by being locked in a mating hole.

Therefore, when the inflator is actuated, the gas introduction portion of the airbag bag inflates and presses the center of the upper end of the C-pillar garnish in the front-rear direction toward the vehicle interior. As a result, the upper end of the C-pillar garnish is elastically deformed in a curved shape, and moves to the vehicle interior side to a position where the engaging head of the pin engages with the periphery of the engaging hole. As a result, the airbag bag deployment space is expanded, and the airbag bag is deployed smoothly. Also, at this time, since the axes of the front and rear engagement holes in the C pillar inner panel are set to be non-parallel, the C pillar garnish can be reliably prevented from coming off.
Further, the C pillar garnish can be easily attached and detached only by rotating and sliding the C pillar garnish. In addition, since there is no need to provide a separate lid as in the prior art, the increase in the number of parts is suppressed, the appearance quality and the ease of replacement are prevented, and the deployment performance of the airbag bag is improved. can do.

According to a fourth aspect of the present invention, in the head protecting airbag device according to the third aspect, the engaging hole is formed by cutting and raising the engaging hole with the engaging head of the pin. It has a possible claw part.

Therefore, in addition to the contents of the third aspect, the claw portion formed by cutting and raising the airbag body under the inflation pressure of the airbag body is plastically deformed, and the upper end of the C pillar garnish moves to the cabin side. As a result, the airbag bag deployment space is expanded, so that the airbag bag can be deployed smoothly. Also,
At this time, since the load accompanying the inflation of the airbag bag is absorbed by the plastic deformation of the claw portion, the load on the C-pillar garnish fixing portion can be reduced accordingly.

According to a fifth aspect of the present invention, in the head protection airbag device according to any one of the first to third aspects, a surface of the base material of the C pillar garnish on the vehicle interior side is covered with a skin. In addition, a fragile portion is formed at the upper end of the base material along the axial direction of the airbag bag.

Therefore, in addition to the contents described in any one of claims 1 to 3, the upper end portion of the base material of the C pillar garnish expands in the fragile portion when the airbag bag is inflated.
The deployment space of the airbag body is further expanded, and the deployment performance of the airbag body can be improved.

According to a sixth aspect of the present invention, in the head protection airbag device according to any one of the first to third aspects, the surface of the base material of the C pillar garnish on the vehicle interior side is covered with a skin. In addition, a fragile portion that intersects the axial direction of the airbag body is formed at the upper end of the base material.

Therefore, in addition to the contents described in any one of claims 1 to 3, the upper end portion of the base material of the C pillar garnish can be easily placed in the vehicle interior due to the formation of the fragile portion when the airbag bag is inflated. Because it bends, deployment of ceiling materials becomes easy,
The deployment space of the airbag body is further expanded, and the deployment performance of the airbag body can be improved.

According to a seventh aspect of the present invention, an airbag bag which is deployed in a curtain shape is fixedly mounted at least from a C pillar to a roof side rail, and an inflator is fixed to a C pillar. In the head protection airbag device covered with the material, the upper end of the C-pillar garnish is attached and fixed to the C-pillar inner panel at two front and rear positions, and the base material between the two fixed portions is provided along both sides of the airbag bag body. An extended slit is formed so that the base material between the two fixing portions can be deployed to the vehicle interior side, and the vehicle interior side of the base material of the C pillar garnish is covered with a skin.

Therefore, when the inflator is actuated, the airbag bag inflates and presses the center of the upper end of the C pillar garnish in the front-rear direction toward the vehicle interior. At this time, the central portion in the front-rear direction of the upper end of the C-pillar garnish develops in a slit extending along both sides of the airbag body formed on the base material between the two fixing portions to the C-pillar inner panel. As a result, the deployment space of the airbag bag body is expanded,
The airbag bag deploys smoothly. In addition, since there is no need to provide a separate lid as in the prior art, the increase in the number of parts is suppressed, the appearance quality and the ease of replacement are prevented, and the deployment performance of the airbag bag is improved. can do. In addition, at this time, the inflation pressure of the airbag bag is C
Since it hardly acts on both fixing portions of the pillar garnish to the C pillar inner panel, it is possible to prevent the C pillar garnish from falling off. Further, by changing the slit length, width, and the like, the deployment mode of the rear portion of the airbag bag for the rear seat can be controlled.

According to the present invention, the airbag bag which is deployed in the shape of a curtain is fixedly mounted on at least the C-pillar to the roof side rail, and the inflator is fixedly mounted on the C-pillar. In the head protection airbag device covered with a material, the upper end of the C pillar garnish can be engaged with a pin having an engagement head and a keyhole-shaped engagement hole, and can be plastically deformed integrally provided on the C pillar inner panel. It is attached to and fixed to the C-pillar inner panel at two positions before and after the engagement between the metal sheet bracket and the clip.

Therefore, when the inflator is actuated, the airbag bag is inflated, and the central portion in the front-rear direction of the upper end of the C-pillar garnish is pressed toward the vehicle interior, so that the engaging head of the pin comes into contact with the peripheral edge of the engaging hole. Up to this point, the upper end of the C pillar garnish moves toward the vehicle interior, and the sheet metal bracket is plastically deformed to move the upper end of the C pillar garnish toward the interior of the vehicle. As a result, the deployment space for the airbag bag is expanded, and the airbag bag is deployed smoothly. Also,
Since it is not necessary to provide a separate lid as in the prior art, it is necessary to suppress an increase in the number of parts, to prevent a reduction in appearance quality and replacement workability, and to improve the deployment performance of the airbag bag. Can be. Further, when the occupant's head comes into contact with the upper end of the C pillar garnish when the airbag bag is not deployed, the impact on the occupant's head can be reduced by plastic deformation of the sheet metal bracket.

According to a ninth aspect of the present invention, a curtain-deployed airbag bag is attached and fixed to at least a roof side rail from a C pillar and an inflator is attached to a C pillar, and the airbag bag and the inflator are installed inside. In the head protection airbag device covered with a material, the deployment part of the airbag bag is arranged on the ceiling material side of the parting line between the C pillar garnish and the ceiling material, and the airbag bag and the inflator are connected with a metal pipe. It is characterized by being connected.

Accordingly, since the airbag inflatable portion is not arranged in the C-pillar garnish, the load due to the inflation of the airbag does not act on the fixed portion at the upper end of the C-pillar garnish. As a result, since there is no need to provide a separate lid as in the prior art, the increase in the number of parts is suppressed, the appearance quality and the workability of replacement are prevented, and the deployment performance of the airbag bag is reduced. Can be improved. In addition, it is possible to prevent the C pillar garnish from falling off.

According to a tenth aspect of the present invention, a curtain-deployed airbag bag is attached and fixed from at least a C-pillar to a roof side rail, and an inflator is attached to a C-pillar. In the head protection airbag device covered with a material, the airbag bag in the region from the inflator to the parting line between the C pillar garnish and the ceiling material is covered with a sheet metal bracket fixed to the C pillar inner panel. And

Accordingly, since the airbag inflatable portion located in the C-pillar garnish is covered with the sheet metal bracket, the load due to the inflation of the airbag does not act on the fixed portion of the C-pillar garnish. As a result, since there is no need to provide a separate lid as in the prior art, the increase in the number of parts is suppressed, the appearance quality and the workability of replacement are prevented, and the deployment performance of the airbag bag is reduced. Can be improved. In addition, it is possible to prevent the C pillar garnish from falling off. In addition, by making the sheet metal bracket plastically deformable,
If the occupant head abuts on the upper end of the C-pillar garnish when the airbag bag is not deployed, the impact on the occupant head can be reduced by plastic deformation of the sheet metal bracket.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A head protection airbag device according to a first embodiment of the present invention will be described with reference to FIGS.

In the drawings, an arrow FR indicates a forward direction of the vehicle, an arrow UP indicates an upward direction of the vehicle, and an arrow IN indicates an inward direction of the vehicle width.

As shown in FIG. 1, a head protection airbag device 10 according to the present embodiment includes a sensor (not shown) for detecting a side collision state, and a column-shaped inflator that ejects gas when activated. 14 and an airbag bag 16
And as main components. The sensor is
For example, it is disposed near the lower end of the B pillar (center pillar), and detects a side collision state when a side collision load of a predetermined value or more acts on the vehicle body side. Also,
The inflator 14 is fixed to a quarter inner panel 18 as a C pillar inner panel via a bracket 20, and is connected to the above-described sensor. Therefore,
When the sensor detects the side collision state, the inflator 14 operates.

A gas introduction passage 22 extends obliquely downward and rearward from the upper rear end of the main body 16 A of the airbag bag 16, and the gas introduction passage 22 is connected to the inflator 14. Therefore, the gas ejected from the inflator 14 is supplied to the airbag 1 by the gas introduction passage 22.
6 into the main body 16A.

The airbag bag 16 folded in a bellows shape
Of the roof side rail inner panel 24
Are arranged along. At the upper edge of the airbag body 16, mounting portions 26 are formed to protrude at predetermined intervals in the front-rear direction, and the airbag bag 16 is fixed to these mounting portions 26 by fixing members such as bolts. 28, it is fixed to the roof side rail inner panel 24.

As shown in FIG. 2, the main body portion 16A of the airbag bag body 16 which has been folded and elongated has a roof side rail inner panel 24 and a roof head lining 32 serving as a ceiling member, which is located outside the vehicle width direction. It is stored between the unit 32A.

As shown in FIG. 1, the air bag 16
A jump table 34 is fastened together by a fixing member 28 to a portion where the rear end 16B of the main body 16A is disposed. The jump table 34 is substantially L-shaped in side view,
A front portion 34A extends forward of the vehicle, and a rear portion 34B extends obliquely rearward below the vehicle. In addition, the jump table 34
Supports the rear end 16B of the main body 16A of the airbag body 16.

As shown in FIG. 2, the cross section of the front portion 34A of the jump stand 34 as viewed from the longitudinal direction is substantially L-shaped, and the vertical wall portion 34C is formed in the vehicle interior of the roof side rail inner panel 24. It is in contact with the side. Vertical wall 3
A lower wall portion 34D is formed from the lower end portion of 4C toward the vehicle interior, and a flange 34E is formed at a distal end portion of the lower wall portion 34D substantially downward. In addition, the flange 34 </ b> E reaches the front end portion 32 </ b> B of the outer portion 32 </ b> A in the vehicle width direction of the roof head lining 32. Further, the front end portion 32B of the outer portion 32A in the vehicle width direction of the roof head lining 32 is connected to the upper end edge 38 of the C pillar garnish 38.
When the airbag 16 is engaged with the outside of the vehicle compartment A and the airbag 16 is deployed, the airbag 16 is inflated and deployed toward the passenger compartment by the lower wall 34D of the jumping stand 34. Therefore, as shown by the two-dot chain line in FIG.
2 is disengaged from the upper edge 38A of the C-pillar garnish 38, the vehicle width direction outer portion 32A of the roof head lining 32 is expanded into the vehicle interior, and the airbag bag body 16 is opened through the gap. It is designed to expand and deploy to the vehicle interior.

As shown in FIG. 3, the quarter inner panel 18 is provided with a recess 4
0 is formed substantially along the vertical direction. This recess 40
A gas introduction passage 22 for the airbag bag 16 is provided at a rear portion of the airbag bag 16.
2 are provided.

As shown in FIG. 1, a pair of front and rear engagement holes 44 and 46 for fixing the upper portion of the C-pillar garnish 38 at predetermined intervals in the front-rear direction are formed above the quarter inner panel 18. The engaging holes 44 and 46 are formed in a rectangular shape. The C-pillar garnish 38 is fixed to the quarter inner panel 18 at a plurality of portions other than the engagement holes 44 and 46.

As shown in FIG. 3, a metal clip 50 extending in the front-rear direction of the vehicle is disposed at the upper end of the C-pillar garnish 38 and outside the cabin. The metal clip 50 is fixed to the base material 38B by a heat caulking 52, and the inside of the vehicle interior of the base material 38B is covered with a skin 38C.

As shown in FIG. 1, an engaging claw 76 is formed at the rear of the lower end of the base material 38B so as to protrude downward. A chamfer 76 </ b> A for insertion is formed below the front end of the engaging claw 76, and the engaging claw 76 is locked in a mounting hole 80 formed in the package tray 78.

As shown in FIG. 3, a metal clip 50 is provided.
38B of C pillar garnish 38 fixing
Is thin and easily deformed. The front and rear ends of the metal clip 50 extend outward from the vehicle cabin.
4, 56. The engaging claw portions 54 and 56 have a positional relationship in which the both claw portions face each other, and a rear side portion of the front engaging claw portion 54 and a front side portion of the rear side engaging claw portion 56 are respectively engaged. Joint recesses 54A and 56A are formed. Further, the tips of the engaging claws 54 and 56 are folded back in a triangular shape, and when the C pillar garnish 38 is pressed from the vehicle interior, the engaging recesses 54A and 5A of the engaging claws 54 and 56 are formed.
6A engages with the engagement holes 44 and 46 of the quarter inner panel 18.

Accordingly, when the airbag bag body 16 is inflated and deployed, the gas introduction passage 22 of the airbag bag body 16 expands and expands as shown in FIG. When the central portion in the direction is pressed toward the interior of the vehicle, the central portion in the front-rear direction of the metal clip 50 is bent toward the interior of the vehicle together with the C pillar garnish 38, and the engaging claws 54 and 56 approach each other. Therefore, the engagement state between the engagement recesses 54A, 56A and the engagement holes 44, 46 of the quarter inner panel 18 is maintained.

On the other hand, as shown in FIG. 5, when the center of the upper part of the C pillar garnish 38 in the front-rear direction is pressed outwardly (in the direction of arrow F in FIG. 5), the metal clip together with the C pillar garnish 38 is formed. The central portion in the front-rear direction of 50 is curved toward the outside of the cabin, and each engaging claw portion 54, 56
Are deformed in a direction away from each other, so that each engagement recess 54
A, 56A and the engagement hole 44 of the quarter inner panel 18,
The engagement state with 46 is released.

Next, the operation of the present embodiment will be described.

In this embodiment, when a side impact load of a predetermined value or more acts on the vehicle body side, a side collision is detected by a sensor. For this reason, the inflator 14 operates and a predetermined amount of gas is ejected. Thereby, the airbag bag 16 starts to inflate, and the inflated airbag bag 1
As shown by a two-dot chain line in FIG. 2, a curtain is provided below the roof side rail inner panel 24 from the vehicle rear side to the vehicle front side while pushing and opening the vehicle width direction outer portion 32A of the roof head lining 32. Swelling in a shape.

At this time, in this embodiment, the jump table 34
The rear end 16 of the main body 16A of the airbag body 16
B, the lower wall portion 34D of the jump table 34
Thereby, the airbag bag body 16 is inflated and deployed toward the vehicle interior. As a result, as shown by a two-dot chain line in FIG.
Due to the inflation pressure of the airbag bag body 16, the front end portion 32B of the roof head lining 32 and the C pillar garnish 3
8 is disengaged from the upper edge 38A, the outer portion 32A of the roof head lining 32 in the vehicle width direction expands toward the vehicle interior, and the airbag bag body 16 expands and expands toward the vehicle interior through the gap. Therefore, the main body 1 of the airbag bag body 16
The rear end 16B of 6A can be prevented from sneaking into the outside of the cabin of the C pillar garnish 38.

In the present embodiment, the airbag 1
4, the gas introduction passage 22 of the airbag bag body 16 is inflated and expanded to press the central portion in the front-rear direction of the upper part of the C pillar garnish 38 toward the vehicle interior, as shown in FIG. I do. As a result, C pillar garnish 3
8, the central portion in the front-rear direction of the metal clip 50 curves toward the interior of the vehicle, and the engaging claws 54, 56 are deformed in a direction approaching each other, so that the engaging recesses 54A, 56A and the quarter inner panel are formed. The engagement force of the engagement pillar 18 with the engagement holes 44 and 46 is strengthened, and the C pillar garnish 38 can be reliably prevented from coming off the quarter inner panel 18.

On the other hand, in the present embodiment, as shown in FIG. 5, when the central portion in the front-rear direction of the upper part of the C pillar garnish 38 is pushed outwardly of the vehicle compartment (in the direction of arrow F in FIG. 5), the C pillar garnish 38 Along with 38, the central portion of the metal clip 50 in the front-rear direction curves outwardly of the vehicle compartment, and the engaging claw portions 54 and 56 are deformed in a direction away from each other. As a result, the engagement between the engagement recesses 54A, 56A and the engagement holes 44, 46 of the quarter inner panel 18 is released, so that the C pillar garnish 38 can be easily detached from the quarter inner panel 18. Further, since there is no need to provide a separate lid as in the related art, it is possible to suppress an increase in the number of parts and to prevent a reduction in appearance quality and replacement workability.

Next, a second embodiment of the head protection airbag device of the present invention will be described with reference to FIGS.

The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 6, in the present embodiment, C
A pair of front and rear pins 60 having a spherical engaging head 60A are insert-molded at the upper end of the base material 38B of the pillar garnish 38. Further, the portion of the base material 38B corresponding to the airbag bag 16 and the portion where the pins 60 are set are formed of a softer material than the other portions. Further, a pair of front and rear keyhole-shaped engagement holes 62 and 64 are formed in a portion above the quarter inner panel 18 corresponding to the pins 60.

As shown in FIG. 7, the keyhole-shaped engagement holes 62,
64 is a top portion 66 of the convex portions 66, 68 protruding into the vehicle cabin
A, 68A, and small diameter holes 62A, 64A are formed so as to face each other.

As shown in FIG. 6, the tops 66A, 68A of the projections 66, 68 are inclined so that the sides facing each other are closer to the interior of the vehicle than the other side. When the C pillar garnish 38 is pressed from the vehicle interior to the exterior of the vehicle interior in a state where the 60A is in contact with the tops 66A, 68A of the convex portions 66, 68, the upper end of the C pillar garnish 38 is elastically deformed and The engagement head 60A slides toward the large diameter portion along the tops 66A, 68A of the projections 66, 68, and passes through the keyhole-shaped engagement holes 62, 64. Thereafter, when the pressing force is released, the upper end of the C pillar garnish 38 returns to the original shape, and the engaging head 6 of each pin 60
0A moves toward the small-diameter holes 62A and 64A, and the engaging head 60 moves.
A locks into the small diameter holes 62A and 64A.

Next, the operation of the present embodiment will be described.

In this embodiment, when the airbag bag 16 is inflated and deployed in the same manner as in the first embodiment, the gas introduction passage 22 of the airbag bag 16 is inflated and expanded as shown in FIG. Then, the center of the upper part of the C pillar garnish 38 in the front-rear direction is pressed toward the vehicle interior. As a result, together with the C pillar garnish 38, the engaging head 60
A is deformed in the direction of approaching each other, so that the engaging force between the engaging head 60A of each pin 60 and the keyhole-shaped engaging holes 62, 64 of the quarter inner panel 18 is strengthened, and the quarter inner panel of the C pillar garnish 38 is strengthened. 18 can be reliably prevented.

On the other hand, in the present embodiment, as shown in FIG. 6, when the center of the upper part of the C pillar garnish 38 in the front-rear direction is pressed outward of the vehicle compartment (in the direction of arrow F in FIG. 6), the C pillar garnish is With 38, the engaging heads 60A of the pins 60 are deformed in a direction away from each other. As a result, the engaging head 60A of each pin 60 is inserted into the small-diameter holes 62A, 64A.
The C pillar garnish 38 can be easily attached to and detached from the quarter inner panel 18 because it comes out of A and moves to the large diameter portion. Further, since there is no need to provide a separate lid as in the related art, it is possible to suppress an increase in the number of parts and to prevent a reduction in appearance quality and replacement workability.

Next, a third embodiment of the head protection airbag device according to the present invention will be described with reference to FIGS.

The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 9, in this embodiment, C
A pair of front and rear pins 70 having a disc-shaped engaging head 70A is insert-molded at the upper end of the base material 38B of the pillar garnish 38. Further, a pair of front and rear keyhole-shaped engagement holes 72 and 74 are formed in a portion above the quarter inner panel 18 corresponding to the pins 70.

As shown in FIG. 10, the keyhole-shaped engagement holes 7
Reference numerals 2 and 74 denote an axis 72A of the keyhole-shaped engagement hole 72 (small diameter hole 7).
2B extends toward the rear of the vehicle, and the axis 74A of the keyhole-shaped engaging hole 74 (the extending direction of the small-diameter hole 74B) is obliquely downward toward the rear of the vehicle. As a result, the axis 72A of the keyhole-shaped engagement hole 72 and the axis 74A of the keyhole-shaped engagement hole 74 are not parallel (angle difference θ> 45 °).

As shown in FIG. 11A, the engaging claw 76 of the C pillar garnish 38 is
8 is engaged with a mounting hole 80 formed in the mounting hole 8. As shown in FIG. 11B, a plurality of resin ribs 70B are provided on the back side of each engaging head 70A of the pair of pins 70 in the radial direction of the engaging head 70A (this embodiment). In the state where the C-pillar garnish 38 is mounted on the quarter inner panel 18, these ribs 70 </ b> B are fixed to the keyhole-shaped engagement holes 72, respectively, as shown in FIG. 9. By locking to the peripheral edge of 74, the C pillar garnish 38 is prevented from floating.

Next, the operation of the present embodiment will be described.

In this embodiment, when the airbag bag 16 is inflated and deployed in the same manner as in the first embodiment, as shown in FIG. 12, the gas introduction passage 22 of the airbag bag 16 is inflated and expanded. Then, the center of the upper part of the C pillar garnish 38 in the front-rear direction is pressed toward the vehicle interior. As a result, C
Engagement head 7 of each pin 70 together with pillar garnish 38
OA are deformed in directions approaching each other. At this time, the axis 72A of the keyhole-shaped engagement hole 72 and the axis 74
A is non-parallel, so that the engagement head 70A of each pin 70 and the keyhole-shaped engagement hole 7 of the quarter inner panel 18
The engagement state with 2, 74 is maintained, and the separation of the C pillar garnish 38 from the quarter inner panel 18 can be reliably prevented.

In this embodiment, the airbag 1
6, when the central portion in the front-rear direction of the upper part of the C pillar garnish 38 is pressed toward the vehicle interior, each pin 7
The resin rib 70B of No. 0 is damaged, and the engaging head 70A comes into contact with the periphery of the keyhole-shaped engaging holes 72, 74. As a result,
The upper part of the C-pillar garnish 38 has a rib 70 toward the passenger compartment.
Since the airbag 16 can be moved by approximately the height of B, the airbag 16 is more smoothly deployed.

On the other hand, in the present embodiment, when assembling the C pillar garnish 38 to the vehicle body, first, the rear pin 70 is inserted into the large-diameter portion of the rear keyhole-shaped engaging hole 74, and the C pillar garnish 38 is inserted. 38 around the pin 70 on the rear side,
The front pin 70 is inserted into the large diameter portion of the front keyhole-shaped engagement hole 72. As a result, the C-pillar garnish 38 at the position shown by the two-dot chain line in FIG. 10 is moved so that each pin 70 enters each of the small-diameter holes 72B and 74B of each of the keyhole-shaped engagement holes 72 and 74. Engagement claw 76 of garnish 38
Is locked in the mounting hole 80 formed in the package tray 78, and the mounting position is indicated by a solid line in FIG. Therefore, the C pillar garnish 38 can be easily detached from the quarter inner panel 18. Further, since there is no need to provide a separate lid as in the related art, it is possible to suppress an increase in the number of parts and to prevent a reduction in appearance quality and replacement workability.

Next, a fourth embodiment of the head protection airbag device according to the present invention will be described with reference to FIGS.

The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 13, in this embodiment,
A pair of front and rear pins 82 having a disk-shaped engaging head 82A are insert-molded at the upper end of the base material 38B of the C pillar garnish 38. A pair of front and rear engagement holes 84 and 86 are formed in the upper portion of the quarter inner panel 18 corresponding to the pins 82.

As shown in FIG. 14, the engagement hole 84 is formed by the plastically deformable claw 8 which engages with the engagement head 82A of the pin 82.
4A, and the claw portion 84A is formed by cutting and raising the quarter inner panel 18. Also, the claw portion 8
An opening 84B with which the engaging head 82A of the pin 82 engages is formed at the tip of 4A. The engagement hole 86 has the same configuration.

As shown in FIG. 15, the engaging direction at the claw portion 84A (the opening direction of the opening portion 84B) is toward the front of the vehicle, and the engaging direction at the claw portion 86A (the opening portion 86B).
B opening direction) is directed upward along an arc 88 centered on the claw portion 84A.

Next, the operation of the present embodiment will be described.

In this embodiment, when the airbag bag 16 is inflated and deployed in the same manner as in the first embodiment, the gas introduction passage 22 of the airbag bag 16 is inflated and expanded as shown in FIG. Then, the center of the upper part of the C pillar garnish 38 in the front-rear direction is pressed toward the vehicle interior. As a result, C
Engagement head 8 of each pin 82 together with pillar garnish 38
2A move toward each other. At that time, the claw 8
The engagement direction at 4A is toward the front of the vehicle, and the engagement direction at the claw portion 86A is upward along an arc 88 centered on the claw portion 84A. Engagement hole 8 of quarter inner panel 18
The engagement state with the fourth and 86 is maintained, and the C pillar garnish 38 is securely held by the quarter inner panel 18.

In the present embodiment, the airbag 1
6, when the central part in the front-rear direction of the upper part of the C pillar garnish 38 is pressed toward the vehicle interior, each claw 8
4A and 86A are plastically deformed toward the vehicle interior. As a result, C
The upper end of the pillar garnish 38 faces each claw 8 toward the vehicle interior.
4 and 86, so that the air bag 16 can be moved.
Is developed more smoothly.

On the other hand, in the present embodiment, as shown in FIG. 15, when assembling the C pillar garnish 38 to the vehicle body, first, the C pillar garnish 3 is attached to the front claw portion 84A.
The engaging head 82A of the pin 82 of FIG. 8 is engaged, the position is indicated by a two-dot chain line in FIG.
The C-pillar garnish 38 is rotated downward (in the direction of arrow B in FIG. 15) to lock the engaging head 82A of the pin 82 of the C-pillar garnish 38 on the rear claw portion 86A, The engaging claws 76 are engaged with mounting holes 80 formed in the package tray 78. As a result, the C pillar garnish 38 can be easily detached from the quarter inner panel 18. Further, since there is no need to provide a separate lid as in the related art, it is possible to suppress an increase in the number of parts and to prevent a reduction in appearance quality and replacement workability.

The upper end of the base material 38B of the C-pillar garnish 38 in the first to fourth embodiments is attached to the upper end of FIG.
As shown in (A), a slit 90 as a weak portion may be formed along the axial direction of the airbag bag 16. Also, as shown in FIG. 17B, the slit 90 is closed with a tape 92 in order to improve the surface properties after the skin 38C is attached to the base material 38B. The slit 90 like this
When the airbag bag body is inflated, the upper end portion of the base material 38B of the C pillar garnish 38 easily bends toward the vehicle interior, so that the outer portion 32A of the roof head lining 32 in the vehicle width direction is also easily deployed. Thus, the space for deploying the airbag body can be further expanded, and the deployment performance of the airbag body 16 can be improved.

The weak portion is not limited to the slit, but may be a notch 94 as shown in FIGS. 18 (A) and 18 (B). In addition, FIG. 19A and FIG.
As shown in (B), a notch 9 is provided behind the slit 90.
4 may be formed substantially parallel, and the lower end of the slit 90 may extend rearward. In this case, as shown in FIG. 19C, when the airbag bag is deployed, the upper end of the base material 38B of the C pillar garnish 38 is broken along the slit 90, and the notch 94 is hinged to the vehicle interior. It is possible to largely bend in the direction.

As shown in FIG. 20, a plurality of slits 96 may be formed at predetermined intervals as fragile portions intersecting with the axial direction of the airbag body 16. Also in this case, since the upper end portion of the base material 38B of the C pillar garnish 38 easily bends toward the interior of the vehicle, the outer portion 32A of the roof head lining 32 in the vehicle width direction is easily deployed, and the airbag bag deployment space is reduced. The airbag bag 16 can be further enlarged, and the deployment performance of the airbag bag 16 can be improved.

Next, a fifth embodiment of the head protection airbag device of the present invention will be described with reference to FIGS.

The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 21, in the present embodiment,
The upper end of the base material 38B of the C pillar garnish 38 is fixed to the quarter inner panel 18 by fixing members such as clips at fixing portions 38D and 38E formed near both ends in the front-rear direction.

The base material 3 of the C pillar garnish 38
8B, a gas inlet passage 22 of the airbag body 16 is provided between the fixing portions 38D and 38E.
Are formed extending along both front and rear sides of the slits 98, and the vicinity of the lower ends of these slits 98, 100 are connected by notches 102.

As shown in FIG. 22, the inside surface of the base material 38B of the C pillar garnish 38 is covered with a skin 38C, and the front and rear edges of the base material 38B between the slits 98 and 100 The vertical wall portions 38F and 38G are formed toward the outside of the cabin.

Next, the operation of the present embodiment will be described.

In the present embodiment, as shown in FIG. 23, when the airbag bag 16 is inflated and deployed in the same manner as the first embodiment, the gas introduction passage 22 of the airbag bag 16 is inflated and expanded. Then, the center of the upper part of the C pillar garnish 38 in the front-rear direction is pressed toward the vehicle interior. As a result, C
The portion between the slits 98 and 100 of the pillar garnish 38 becomes a hinge at the notch 102 and is deformed toward the vehicle interior as shown by a two-dot chain line in FIG. As a result, the outer side portion 32A of the roof head lining 32 in the vehicle width direction is easily deployed, the space for deploying the airbag body is further expanded, and the airbag body 16 is smoothly deployed. Can be improved. Moreover, at this time, since the inflation pressure of the airbag bag body 16 hardly acts on the fixing portions 38D and 38E of the C pillar garnish 32,
The C pillar garnish 32 can be prevented from falling off. Also,
Since there is no need to provide a separate lid as in the prior art, it is possible to suppress an increase in the number of parts and to prevent a reduction in appearance quality and operability. Further, in the present embodiment, the lengths, widths, and the like of the slits 98 and 100 are changed to thereby inflate the rear seat inflatable portion of the airbag body 16 (the rear portion of the main body 16A corresponding to the head of the occupant seated in the rear seat). Can control the form of deployment.

Next, a sixth embodiment of the head protection airbag device according to the present invention will be described with reference to FIGS.

The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIGS. 25 and 26, in this embodiment, the front portion of the upper end of the C-pillar garnish 38 is fixed to the quarter inner panel 18 by pins 104. The pin 104 is inserted into the base material 38B of the C pillar garnish 38, and has a disk-shaped engaging head 1
04A. Engagement head 104A of pin 104
Is engaged with a keyhole-shaped engaging hole 106 formed in the quarter inner panel 18, and the pin 104 causes the upper end of the C-pillar garnish 38 to stroke toward the vehicle compartment (movement amount L) when the airbag body is deployed. It is set to a possible length.

As shown in FIG. 24, at the rear of the upper end of the C pillar garnish 38, the inflator 14
A lower portion 110A of a sheet metal bracket 110 is wound around a connection between the airbag bag 16 and the gas introduction passage 22.
The middle part 110B in the vertical direction of the sheet metal bracket 110
Are formed with a pair of front and rear cutouts 112 and 114.

As shown in FIG. 26, the sheet metal bracket 1
The cross-sectional shape of the upper portion 110C of the upper portion 10 is in a hat shape with the opening facing the outside of the vehicle compartment, and faces the gas introduction passage 22 of the airbag bag 16. Also, sheet metal bracket 1
A mounting hole 115 is formed in the upper part 110C of the C-type garnish 10 and the C-pillar garnish 38
The clip 117 fixed to the base material 38B is engaged.

Next, the operation of the present embodiment will be described.

In the present embodiment, when the airbag body 16 is inflated and deployed in the same manner as in the first embodiment, the gas introduction passage 22 of the airbag body 16 is opened as shown by a two-dot chain line in FIG. It expands and expands the diameter, and presses the upper part 110C of the sheet metal bracket 110 toward the vehicle interior. As a result, the upper part 110C of the sheet metal bracket 110 is
, The rear portion of the upper end of the C pillar garnish 38 moves toward the vehicle interior. In addition, the front part of the upper end of the C pillar garnish 38 also strokes (moves L) toward the vehicle interior until the engagement head 104A of the pin 104 comes into contact with the periphery of the keyhole-shaped engagement hole 106. Therefore, the deployment space of the airbag bag 16 is expanded, so that the airbag 16 is deployed smoothly.
Further, since there is no need to provide a separate lid as in the related art, it is possible to suppress an increase in the number of parts and to prevent a reduction in appearance quality and replacement workability.

Further, in this embodiment, when the occupant's head abuts on the upper end of the C-pillar garnish 38 when the airbag bag is not deployed, the impact on the occupant's head due to the collision is caused by the sheet metal bracket 110. The upper portion 110C can be alleviated by plastically deforming outward from the vehicle cabin starting from the vertical middle portion 110B.

Next, a seventh embodiment of the head protection airbag device according to the present invention will be described with reference to FIGS.

The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 28, in this embodiment,
The upper end of the C-pillar garnish 38 is fixed to the quarter inner panel 18 by a fixing member such as a clip at fixing portions 38D and 38E formed near both ends in the front-rear direction.

As shown in FIG. 29, in this embodiment,
The airbag bag 16 is connected to the inflator 14 by a metal pipe 111. As shown in FIG. 30, the deployed portion 16C of the airbag bag 16 is connected to the upper end edge of the C pillar garnish 38 (the roof head lining 3).
2) is set at a position above 38H.

Next, the operation of the present embodiment will be described.

In this embodiment, the C pillar garnish 3
Since the inflated portion of the airbag body 10 is not disposed in the airbag 8, when the airbag body 16 is inflated and deployed,
As shown by a two-dot chain line in FIG.
Expands and deploys at a position above the C-pillar garnish 38. As a result, the load caused by the expansion of the C-pillar garnish 38 does not act on the fixing portions 38D and 38E before and after the upper end of the C-pillar garnish 38, so that the C-pillar garnish 38 can be prevented from falling off. Further, since there is no need to provide a separate lid as in the related art, it is possible to suppress an increase in the number of parts and to prevent a reduction in appearance quality and replacement workability.

Next, an eighth embodiment of the head protection airbag device of the present invention will be described with reference to FIGS.

The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 31, in the present embodiment,
The upper end of the C-pillar garnish 38 is fixed to the quarter inner panel 18 by a fixing member such as a clip at fixing portions 38D and 38E formed near both ends in the front-rear direction. Further, the gas introduction passage 22 of the airbag bag body 16 in a region from the inflator 14 to the parting line 38H between the C pillar garnish 38 and the roof head lining 32 is covered with a sheet metal bracket 116. The lower portion 116A of the sheet metal bracket 116 is
4 is welded to a connection portion between the gas introduction passage 22 of the airbag body 16.

As shown in FIG. 32, the sheet metal bracket 1
The upper portion 116B of the 16 has a hat-shaped cross section,
The front and rear flanges 116C and 116D are fixed to the quarter inner panel 18 by fixing members 118 such as bolts and nuts. Also, the sheet metal bracket 116
The upper portion 116B is plastically deformed to the outside of the vehicle compartment when pressed by a large force from the vehicle interior side.

Next, the operation of the present embodiment will be described.

In the present embodiment, the inflator 14
Pillar garnish 38 and roof head lining 32
The gas introduction passage 22 of the airbag bag 16 in the region reaching the parting line 38H is covered by the sheet metal bracket 116, so that when the airbag bag 16 is inflated and deployed, the C-pillar garnish is used. It expands and deploys at a position above 38. As a result, the load due to the expansion of the C pillar garnish 38 does not act on the fixing portions 38D and 38E before and after the upper end of the C pillar garnish 38,
The C pillar garnish 38 can be prevented from falling off. Also,
Since there is no need to provide a separate lid as in the prior art, it is possible to suppress an increase in the number of parts and to prevent a reduction in appearance quality and operability.

Further, in this embodiment, the sheet metal bracket 1
The upper portion 116B of the vehicle 16 is plastically deformed to the outside of the vehicle compartment when pressed by a large force from the vehicle interior side. In the case of contact with the upper end, the impact on the occupant's head due to the collision can be mitigated by the upper portion 116B of the sheet metal bracket 116 being plastically deformed to the outside of the cabin.

In each of the above embodiments, FIG.
As shown in FIG. 2, the folded airbag bag body 16 passes over the upper part of the B pillar (center pillar) 120 along the roof side rail inner panel 24 and reaches further forward, and the head of the occupant seated in the front seat The part can also be protected. In addition, before and after the B pillar 120, the mounting portion 26 of the airbag bag 16 is attached
2, and is fixed to the roof side rail inner panel 24 by a fixing member 28 such as a bolt.

As shown in FIG. 34, the roof head lining 32 is composed of a substrate 124 and a skin 126, and the B pillar garnish 128 is composed of the substrate 130 and the skin 1
32. B pillar garnish 128
Head lining 3 that engages the upper end 128A of the
The predetermined portion along the vehicle front-rear direction of the end surface 32C of the terminal portion on the outside in the vehicle width direction of No. 2 is protruded as compared with other portions,
Its tip is cut obliquely by a water jet, and the cut surface is substantially in the vertical direction of the vehicle. As a result,
In this portion, the end portion of the roof head lining 32 on the outer side in the vehicle width direction becomes thinner downward, and the base portion 124 of the overall wrap margin W with the upper end portion 128A of the B pillar garnish 128 is formed. The wrap margin W1 with the material 130 is about W / 4 = W1.

A bracket 140 having an L-shaped cross section is insert-molded on the upper portion of the base material 130 of the B pillar garnish 128. Through this bracket 140, the upper part of the B pillar garnish 128 is locked in an engagement hole 144 formed in the B pillar inner panel 142, and the B pillar is formed by body deformation at the time of deployment of an airbag body and collision. The garnish 128 is prevented from coming off the B-pillar inner panel 142. Note that a rubber sheet 146 for soundproofing is attached to a contact portion of the bracket 140 with the B pillar inner panel 142,
The rubber sheet 146 has fins 146A for positioning with the engagement holes 144.

Above the engagement hole 144 in the B-pillar inner panel 142, a convex portion 150 protruding into the vehicle interior is formed integrally by press molding or the like.

As shown in FIG. 33, the portion of the airbag body 16 above the B pillar 120 is disposed on the vehicle cabin side of the convex portion 150, and is closer to the vehicle cabin than the other portions. It is protruding. On the rear side of the B pillar 120, the jump stand 15 is attached to the mounting portion 26 of the airbag bag 16.
2 are provided.

As shown in FIG. 35, this jump table 1
52 has an L-shaped cross section, and the vertical wall portion 152A is fastened together with the roof side rail inner panel 24 by the fixing member 28. In addition, the bottom wall 1 of the jump table 152
52B extends toward the interior of the vehicle compartment, and has a flange 152C formed at the front end thereof.

Therefore, the wrap margin required to absorb the variation at the time of assembly is secured by the entire wrap margin W with the upper end portion 128A of the B pillar garnish 128, so that the roof head lining 32 and the B pillar garnish 128 Can be easily absorbed. Moreover, since the wrap margin W1 between the base material 124 of the roof head lining 32 and the base material 130 of the B pillar garnish 128 can be minimized, the deployability of the B pillar garnish 128 during inflation of the airbag body can be improved. The airbag body 16 can be quickly deployed.

Further, the protrusion 15 projecting toward the vehicle interior is provided above the engagement hole 144 in the B pillar inner panel 142.
0 is integrally formed by press molding or the like, and B pillar 1 is formed.
Since the portion of the airbag body 16 above the upper part 20 is made to protrude toward the interior of the vehicle as compared with other parts, it is possible to prevent the airbag body 16 being deployed from being caught on the upper edge of the B pillar garnish 128. Can be prevented and the B pillar 12
There is no need to separately provide a catching prevention means such as a jump stand above the zero.

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are within the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, in each of the above embodiments, the airbag 1
Although the main body 16A of the airbag bag body 16A is folded in a bellows shape, the main body 16A of the airbag bag body 16 may be folded in another form such as a roll instead of the bellows shape. Further, the shape of the main body 16A of the airbag bag body 16 is not limited.

[0112]

As described above, the head protection airbag device according to the first aspect of the present invention suppresses an increase in the number of parts, and prevents the appearance quality and the replacement workability from being deteriorated. Has an excellent effect of improving the deployment performance of the.

According to the second aspect of the present invention, there is provided a head protection airbag apparatus which suppresses an increase in the number of parts, prevents a reduction in appearance quality and replacement workability, and improves the deployment performance of the airbag bag. It has an excellent effect that it can be produced.

According to the third aspect of the present invention, there is provided an airbag apparatus for protecting a head, which suppresses an increase in the number of parts, prevents deterioration in appearance quality and operability, and improves the deployment performance of an airbag bag. It has an excellent effect that it can be produced.

According to the fourth aspect of the present invention, in addition to the effect of the third aspect, in addition to the effect of the third aspect, the burden on the C pillar garnish fixing portion due to the inflation of the airbag bag can be reduced. It has an excellent effect of being able to.

According to the fifth aspect of the present invention, in addition to the effect of any one of the first to third aspects, in addition to the effects of the first to third aspects, the space for deploying the airbag body is further expanded, and the airbag body is further expanded. Has an excellent effect that it is possible to improve the deployment performance.

According to the sixth aspect of the present invention, in addition to the effect of any of the first to third aspects, in addition to the effects of the first to third aspects, the space for deploying the airbag body is further increased, and the airbag body is further expanded. Has an excellent effect that it is possible to improve the deployment performance.

According to the head protection airbag device of the present invention, it is possible to improve the deployment performance of the airbag bag body while suppressing an increase in the number of parts, preventing a reduction in appearance quality and replacement workability. In addition to this, there is an excellent effect that the form of deployment of the rear inflatable portion of the airbag body can be controlled.

In the head protection airbag device according to the present invention, it is possible to improve the deployment performance of the airbag bag body while suppressing an increase in the number of parts, preventing a reduction in appearance quality and replacement workability. And the effect of reducing the impact on the occupant's head due to the collision when the airbag body is not deployed is provided.

According to a ninth aspect of the present invention, there is provided a head protection airbag apparatus which suppresses an increase in the number of parts, prevents deterioration in appearance quality and replacement workability, and improves the deployment performance of the airbag bag. It has an excellent effect that it can be produced.

According to a tenth aspect of the present invention, there is provided a head protection airbag device which suppresses an increase in the number of parts, prevents a reduction in appearance quality and replacement workability, and improves the deployment performance of the airbag bag. And the effect of reducing the impact on the occupant's head due to the collision when the airbag body is not deployed is provided.

[Brief description of the drawings]

FIG. 1 is a side view showing a main portion of a head protection airbag device according to a first embodiment of the present invention, as viewed from the inside of a vehicle cabin.

FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.

FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is a cross-sectional view corresponding to FIG. 3, showing an expanded state of the airbag body in the head protection airbag device according to the first embodiment of the present invention.

FIG. 5 is a cross-sectional view corresponding to FIG. 3, illustrating a method of removing a C-pillar garnish in the head protection airbag device according to the first embodiment of the present invention.

FIG. 6 is a cross-sectional view corresponding to FIG. 3, illustrating a head protection airbag device according to a second embodiment of the present invention.

FIG. 7 is a perspective view showing a keyhole-shaped engagement hole of the head protection airbag device according to the second embodiment of the present invention.

FIG. 8 is a cross-sectional view corresponding to FIG. 3, showing an expanded state of the airbag body in the head protection airbag device according to the second embodiment of the present invention.

FIG. 9 is a cross-sectional view corresponding to FIG. 3, showing a head protection airbag device according to a third embodiment of the present invention.

FIG. 10 is a side view showing a C-pillar garnish of a head protection airbag device according to a third embodiment of the present invention, as viewed from the inside of a vehicle cabin.

11A is an enlarged sectional view taken along line AA of FIG. 10, and FIG. 11B is a perspective view showing an engagement pin of the head protection airbag device according to the third embodiment of the present invention. FIG.

FIG. 12 is a cross-sectional view corresponding to FIG. 3, showing an airbag body deployed state in a head protection airbag device according to a third embodiment of the present invention.

FIG. 13 is a sectional view corresponding to FIG. 3, showing a head protection airbag device according to a fourth embodiment of the present invention.

FIG. 14 is a perspective view showing an engagement hole of a head protection airbag device according to a fourth embodiment of the present invention.

FIG. 15 is a side view showing a C-pillar garnish of a head protection airbag device according to a fourth embodiment of the present invention, as viewed from the inside of a vehicle cabin.

FIG. 16 is a cross-sectional view corresponding to FIG. 3, showing an expanded state of the airbag body in the head protection airbag device according to the fourth embodiment of the present invention.

FIG. 17A is a side view showing a base material of a C-pillar garnish in a head protection airbag device according to another embodiment of the present invention, and FIG. 17B is a BB line of FIG. FIG.

FIG. 18A is a side view showing a base material of a C-pillar garnish in a head protection airbag device according to another embodiment of the present invention, and FIG. 18B is a line BB in FIG. FIG.

FIG. 19A is a side view showing a base material of a C pillar garnish in a head protection airbag device according to another embodiment of the present invention, and FIG. 19B is a BB line of FIG. (C) is a cross-sectional view corresponding to FIG. (B) showing an expanded state of the airbag body.

FIG. 20 is a side view showing a base material of a C pillar garnish in a head protection airbag device according to another embodiment of the present invention.

FIG. 21 is a side view showing a base material of a C-pillar garnish in a head protection airbag device according to a fifth embodiment of the present invention, as viewed from the inside of a vehicle cabin.

FIG. 22 is an enlarged sectional view taken along line 22-22 of FIG. 21;

FIG. 23 is an enlarged sectional view taken along line 23-23 of FIG.

FIG. 24 is a side view showing a main part of a head protection airbag device according to a sixth embodiment of the present invention, as viewed from the inside of a vehicle cabin.

FIG. 25 is an enlarged sectional view taken along line 25-25 of FIG. 24;

FIG. 26 is an enlarged sectional view taken along line 26-26 of FIG.

FIG. 27 is an enlarged sectional view taken along line 27-27 of FIG. 26;

FIG. 28 is a side view showing a main part of a head protection airbag device according to a seventh embodiment of the present invention, as viewed from the inside of a vehicle cabin.

FIG. 29 is an enlarged sectional view taken along line 29-29 of FIG. 28;

FIG. 30 is an enlarged sectional view taken along line 30-30 in FIG. 29;

FIG. 31 is a side view showing a main part of a head protection airbag device according to an eighth embodiment of the present invention, as viewed from the inside of a vehicle cabin.

32 is an enlarged sectional view taken along line 32-32 of FIG. 31.

FIG. 33 is a perspective view showing the upper part of the B pillar of the head protection airbag device according to each embodiment of the present invention, as viewed from the front inside of the vehicle.

FIG. 34 is an enlarged sectional view taken along line 34-34 of FIG.

FIG. 35 is an enlarged sectional view taken along line 35-35 of FIG. 33;

[Explanation of symbols]

Reference Signs List 10 Head protection airbag device 14 Inflator 16 Airbag bag 16A Main body of airbag bag 16B Rear end of main body of airbag bag 18 Quarter inner panel (C pillar inner panel) 22 Gas introduction path 24 Roof side Rail inner panel 32 Roof head lining (ceiling material) 34 Jump table 38 C pillar garnish 38B Base material of C pillar garnish 38C C pillar garnish skin 38H Upper edge of C pillar garnish (parting line with roof head lining) 44 Mating hole 46 Engagement hole 50 Metal clip 54 Engagement claw 56 Engagement claw 60 Pin 60A Pin engagement head 62 Keyhole-shaped engagement hole 64 Keyhole-shaped engagement hole 70 Pin 70A Pin engagement head 70B Pin rib 72 Keyhole-shaped engagement hole 74 Keyhole-shaped engagement hole 2 Pin 82A Pin engagement head 84 Engagement hole 84A Claw portion 86 Engagement hole 86A Claw portion 90 Slit (fragile portion) 94 Notch (fragile portion) 96 Slit (fragile portion) 98 Slit 100 Slit 102 Notch 104 Pin 104A Pin engagement head 106 Keyhole-shaped engagement hole 110 Sheet metal bracket 111 Metal pipe 112 Notch 114 Notch 115 Mounting hole 117 Clip 116 Sheet metal bracket

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (10)

[Claims] 1. A head protection in which a curtain-shaped airbag bag is attached and fixed from at least a C pillar to a roof side rail, and an inflator is attached to a C pillar, and the airbag bag and the inflator are covered with an interior material. In the airbag device, a pair of front and rear engagement claws are integrally provided at an upper end portion of the C pillar garnish base material in a positional relationship in which both claw portions face each other.
A head protection airbag device wherein a C-pillar garnish is pressed from the interior of the vehicle to lock the two engagement claws into a pair of front and rear engagement holes formed above the C-pillar inner panel. 2. A head protection in which a curtain-deployed airbag bag is attached and fixed to at least a roof side rail from a C pillar and an inflator to a C pillar, and the airbag bag and the inflator are covered with an interior material. In the airbag device, a pair of front and rear pins having an engaging head are integrally provided at an upper end portion of a C pillar garnish base material, and a portion corresponding to an airbag body and a pin setting portion of the base material are softer than others. A pair of front and rear keyhole-shaped engagement holes are formed above the C-pillar inner panel corresponding to the pins so that the small-diameter holes are opposed to each other. A head protection airbag device wherein a joint head is locked in the engagement hole. 3. A head protection in which a curtain-deployed airbag bag is attached and fixed to at least a roof side rail from a C pillar and an inflator is attached to a C pillar, and the airbag bag and the inflator are covered with an interior material. In the airbag device, a pair of front and rear pins having an engagement head are integrally provided at an upper end of a C pillar garnish base material, and a pair of front and rear keyhole-shaped engagement holes are provided above the C pillar inner panel corresponding to the pins. Are formed so that their axes are non-parallel, and the C-pillar garnish is rotated and slid around one of the pins to lock the engaging head of the pin in the engaging hole. A head protection airbag device characterized by the above-mentioned. 4. The head protection air according to claim 3, wherein the engaging hole has a plastically deformable claw formed by cutting and raising the engaging hole with the engaging head of the pin. Bag device. 5. The C-pillar garnish substrate has a vehicle interior side surface covered with a skin, and a fragile portion is formed at the upper end of the substrate along the axial direction of the airbag bag. The head protection airbag device according to any one of claims 1 to 3, wherein: 6. The C-pillar garnish base material has a vehicle interior side surface covered with a skin, and a fragile portion is formed at an upper end portion of the base material that intersects with an axial direction of the airbag body. The head protection airbag device according to any one of claims 1 to 3, wherein: 7. A head protection in which a curtain-shaped airbag bag body is attached and fixed to at least a roof side rail from a C pillar and an inflator to a C pillar, and the airbag bag body and the inflator are covered with an interior material. In the airbag device, the upper end of the C-pillar garnish is attached and fixed to the C-pillar inner panel at two front and rear positions, and a slit extending along both sides of the airbag bag body is formed in a base material between the fixed portions. A head protection airbag device, wherein a base material between the two fixed portions is configured to be deployable in the vehicle interior, and the vehicle interior side of the base material of the C pillar garnish is covered with a skin. 8. A head protection in which a curtain-deployed airbag bag is attached and fixed at least from a C pillar to a roof side rail, and an inflator is attached to a C pillar, and the airbag bag and the inflator are covered with an interior material. In the airbag device, the upper end of the C-pillar garnish is formed by engaging a pin having an engagement head with a keyhole-shaped engagement hole, and a plastically deformable sheet metal bracket integrally provided on the C-pillar inner panel and a clip. A head protection airbag device, wherein the airbag device is attached and fixed to a C-pillar inner panel at two positions before and after engagement. 9. A head protection in which an airbag bag deploying in a curtain shape is attached and fixed to at least a roof side rail from a C pillar and an inflator to a C pillar, and the airbag bag and the inflator are covered with an interior material. In the airbag device, the deployment portion of the airbag bag is disposed closer to the ceiling material than the parting line between the C pillar garnish and the ceiling material, and the airbag bag and the inflator are connected by a metal pipe. Head protection airbag device. 10. A head protection in which a curtain-shaped airbag bag is fixedly mounted on at least a roof side rail from a C pillar and an inflator is fixed on a C pillar, and the airbag bag and the inflator are covered with an interior material. In the airbag device, an airbag body in a region from an inflator to a parting line between a C pillar garnish and a ceiling material is covered with a sheet metal bracket fixed to a C pillar inner panel. apparatus.