JP2012017045A - Curtain air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To urge a strap to move into a cabin from a clearance between a panel end part and a trim end part of a front pillar in the initial time of deployment when deploying an air bag body.SOLUTION: A curtain air bag device 1 includes: an inflator 1; the air bag body 2; the strap 3; a head lining 4; a pillar trim 5; and a strap guide member 6. The air bag body 2 is installed into an inlet part position of the front pillar 10. The strap 3 supports a front edge of the air bag body 2 in the front pillar 10 when the air bag is deployed. The head lining 4 covers a cabin-inside of a roof side panel 7, in which the inflator 1 and the air bag body 2 are installed. The pillar trim 5 covers a cabin-inside of a pillar panel 11, in which an end of the air bag body 2 and the strap 3 are installed. The strap guide member 6 has a slope surface 6a provided in an inner surface on a head lining 4 side of the pilar trim 5 and smoothly connecting a trim bottom part 5a to a trim end part 5b.

Description

  The present invention is one of vehicle occupant protection devices, and relates to a curtain airbag device that reduces an impact on an occupant by deploying an airbag main body at the time of a side collision.

  Conventionally, curtain airbag devices that extend the occupant protection area to the front pillar are known by extending the airbag body from the roof side to the front pillar and connecting the airbag body and the front pillar with a strap. (For example, refer to Patent Document 1).

  In this conventional device, when deploying the airbag body at the time of a side collision, the strap moves from the gap between the pillar inner panel of the front pillar and the pillar trim to the vehicle interior, so that the edge of the headlining extension protrudes from the pillar trim. Is formed.

JP 2008-239127 A

  However, in the conventional curtain airbag device, the edge of the head lining extension portion protrudes along the shape (depressed shape) of the pillar trim (see FIG. 8 of the publication). For this reason, stress concentrates on the headlining extension due to the force in the deployment direction of the airbag body (vertically downward), and there is a possibility that the strap may not be pushed up to the edge, and the strap cannot be moved into the passenger compartment. There was a problem.

  The present invention has been made paying attention to the above problems, and when deploying the airbag main body, at the initial stage of deployment, it is urged to move the strap from the gap between the panel end portion of the front pillar and the trim end portion into the vehicle interior. An object of the present invention is to provide a curtain airbag device that can perform the above-described operation.

In order to achieve the above object, the curtain airbag device of the present invention is a means including an inflator, an airbag main body, a strap, a headlining, a pillar trim, and a strap guide member.
The inflator is fixed to the vehicle interior side of the roof side panel.
The airbag main body is connected so as to introduce inflation gas from the inflator, and is incorporated along the vehicle interior side of the roof side panel to the position of the front pillar entrance.
The strap has one end connected to the airbag body and the other end fixed to the pillar panel of the front pillar, and supports the front edge of the airbag body when the airbag is deployed.
The headlining is disposed in a roof portion on the vehicle interior side and covers the vehicle interior side of the roof side panel in which the inflator and the airbag main body are incorporated.
The pillar trim extends from the head lining, and covers the end of the airbag body, the end of the airbag body, and the interior of the pillar panel in which the strap is incorporated.
The strap guide member is provided on the inner surface of the pillar trim on the head lining side, and smoothly from a trim bottom where the end of the airbag body is stored toward a trim end that becomes a deployment gap of the airbag body. It has a connecting slope surface.

In the initial deployment of the airbag body, the strap built into the front pillar moves smoothly along the slope surface of the strap guide member and enters the vehicle interior via the gap between the panel end and trim end. Moving.
When the airbag main body is expanded at the initial stage of deployment of the airbag main body, the amount of deformation of the pillar trim toward the vehicle interior gradually increases. When the airbag main body expands simultaneously with the deformation of the pillar trim, the length of the airbag main body in the vehicle front-rear direction is gradually shortened, and the strap is pulled rearward of the vehicle. Then, the strap moves downward in accordance with the deployment direction of the airbag body (vehicle downward direction), and pushes the pillar trim downward.
That is, due to the deformation of the pillar trim accompanying the expansion of the airbag main body, the slope surface of the strap guide member changes to a vehicle downward surface that facilitates the movement of the strap into the vehicle interior. In addition, the force by which the pillar trim is pushed downward by the strap by the strap becomes a force that promotes the sliding movement of the strap along the slope surface of the strap guide member. Therefore, the movement of the strap into the vehicle compartment is completed promptly at the initial deployment of the airbag body.
As a result, when the airbag main body is deployed, it is possible to urge the strap to move into the vehicle interior from the gap between the panel end portion of the front pillar and the trim end portion at the initial stage of deployment.

BRIEF DESCRIPTION OF THE DRAWINGS It is the whole perspective view seen from the vehicle interior side which shows the electric vehicle to which the curtain airbag apparatus of Example 1 was applied. It is the perspective view seen from the vehicle interior side which shows the front pillar part of the electric vehicle to which the curtain airbag device of Example 1 is applied. It is the SA-SA sectional view taken on the line of FIG. 2 which shows the front pillar of the curtain airbag apparatus of Example 1. FIG. It is a perspective view which shows the pillar trim of the curtain airbag apparatus of Example 1. FIG. It is the perspective view seen from the arrow B direction of FIG. 4 which shows the strap guide member provided in the pillar trim of the curtain airbag apparatus of Example 1. FIG. It is the front pillar part perspective view seen from the vehicle interior side which shows the expansion | deployment initial stage effect | action of the airbag main body of the curtain airbag apparatus of Example 1. FIG. It is a pillar trim perspective view which shows the expansion | deployment initial stage effect | action of the airbag main body of the curtain airbag apparatus of Example 1. FIG. FIG. 3 is a front pillar cross-sectional view illustrating an initial operation of the airbag body of the curtain airbag device according to the first embodiment. It is the front pillar part perspective view seen from the vehicle interior side which shows the expansion | deployment middle stage effect | action of the airbag main body of the curtain airbag apparatus of Example 1. FIG. It is the front pillar figure seen from the vehicle interior side which shows the expansion | deployment middle stage effect | action of the airbag main body of the curtain airbag apparatus of Example 1. FIG. It is the front pillar part perspective view seen from the vehicle interior side which shows the expansion | deployment final stage effect | action of the airbag main body of the curtain airbag apparatus of Example 1. FIG. It is a perspective view which shows the strap guide member provided in the pillar trim of the curtain airbag apparatus of Example 2. FIG. It is a perspective view which shows the strap guide member provided in the pillar trim of the curtain airbag apparatus of Example 3. FIG.

  Hereinafter, the best mode for realizing the curtain airbag device of the present invention will be described based on Examples 1 to 3 shown in the drawings.

First, the configuration will be described.
FIG. 1 is an overall perspective view of an electric vehicle to which the curtain airbag device of the first embodiment is applied as viewed from the vehicle interior side. FIG. 2 is a perspective view showing the front pillar portion, and FIG. 3 is a cross-sectional view showing the front pillar. The overall configuration will be described below with reference to FIGS.

  As shown in FIG. 1, the curtain airbag device according to the first embodiment includes an inflator 1, an airbag body 2, a strap 3, a headlining 4, a pillar trim 5, and a strap guide member 6. .

  The curtain airbag device is a system that is incorporated in the left and right roof side portions, and that mitigates the impact on the front seat occupant and the rear seat occupant by deploying the airbag body at the time of a side collision. The curtain airbag device incorporated in the left and right roof side portions has the same configuration. For this reason, in Example 1, the curtain airbag apparatus incorporated in the left roof side part is shown, and illustration and description of the right curtain airbag apparatus are omitted.

  The inflator 1 is fixed to the vehicle interior side of the vehicle rear portion of the roof side panel 7, and the heating agent is burned by the squib 1a which is an electric ignition device, and this combustion expands the gas in the chamber. The inflator 1 operates when the squib 1 a that has received a collision signal from the airbag sensor unit 8 burns the heating agent. The air bag sensor unit 8 outputs a collision signal to the squib 1a upon receiving a voltage signal from the satellite sensor 9 that senses deceleration during a side collision exceeding the set limit of the vehicle.

  The airbag main body 2 is connected so as to introduce inflation gas from the inflator 1, and is assembled from the vehicle rear position to the entrance position of the front pillar 10 along the vehicle interior side of the roof side panel 7. The airbag main body 2 is folded into a cylindrical shape, and a folded shape is maintained by winding a tape that is easily broken by expansion at a predetermined interval. When the airbag main body 2 is deployed, the vehicle interior side of the rear side window and the front side window is closed as shown by the phantom line in FIG.

  The strap 3 has one end connected to the airbag main body 2 and the other end fixed to the pillar panel 11 of the front pillar 10. When the airbag is deployed, as shown by the phantom line in FIG. Support the front edge of the. The front pillar 10 includes a pillar panel 11 on the outside of the vehicle and a pillar trim 5 on the vehicle interior side fixed to the pillar panel 11. As shown in FIG. 3, the pillar panel 11 has an outer panel 11a, an inner panel 11b, and a center panel 11c, and is integrated by overlapping and closing the three panels 11a, 11b, and 11c along both ends. ing.

  The headlining 4 is disposed in a roof portion on the vehicle interior side and covers the vehicle interior side of the roof side panel 7 in which the inflator 1 and the airbag main body 2 are incorporated. The outside of the headlining 4 is covered with a roof panel 12 as shown in FIG. The headlining 4 is overlapped and connected to the pillar trim 14 of the center pillar 13 and the pillar trim 5 of the front pillar 10. As with the front pillar 10, the center pillar 13 includes a pillar panel 15 on the vehicle outer side and a pillar trim 14 on the vehicle interior side fixed to the pillar panel 15.

  The pillar trim 5 extends from the vehicle front end portion of the head lining 4 and covers the vehicle interior side of the pillar panel 11 in which the end portion of the airbag main body 2 and the strap 3 are incorporated. As shown in FIG. 3, a clip member 16 that is inserted and fixed to the inner panel 11 b of the pillar panel 11 is provided at the inner surface position of the pillar trim 5. Further, as shown in FIG. 3, a weather strip 17 is provided at the panel end of the pillar panel 11 to seal a gap between the panel end 11 d of the pillar panel 11 and the trim end 5 b of the pillar trim 5. The weather strip 17 is provided so as to extend to the end of the headlining 4. A gap between the panel end 11 d of the pillar panel 11 sealed by the weather strip 17 and the trim end 5 b of the pillar trim 5 becomes a deployment gap of the airbag body 2.

  The strap guide member 6 is provided on the inner surface of the pillar trim 5 on the head lining 4 side, from the trim bottom portion 5a in which the end portion of the airbag main body 2 is accommodated to the trim end portion 5b serving as a development gap of the airbag main body 2. It has the slope surface 6a which connects smoothly toward.

  FIG. 4 is a perspective view illustrating a pillar trim of the curtain airbag device according to the first embodiment. FIG. 5 is a perspective view of the strap guide member provided on the pillar trim of the curtain airbag device of the first embodiment when viewed from the direction of arrow B in FIG. 4. Hereinafter, a detailed configuration of the strap guide member 6 according to the first embodiment will be described with reference to FIGS. 4 and 5.

  As shown in FIG. 4, the pillar trim 5 is provided with a clip member 16 that is inserted and fixed to the inner panel 11 b of the pillar panel 11 at the inner surface position on the headlining 4 side. The pillar trim 5 is also provided with a main clip member 18 at the center of the inner surface. The inner surface on the vehicle front side from the clip member 16 is the rib inner surface 5c provided with a plurality of ribs 19, and the inner surface on the vehicle rear side from the clip member 16 is the rib-free surface that houses the end of the airbag body 2. It is said.

  The strap 3 is incorporated and disposed along the rib inner surface 5 c on the vehicle front side of the clip member 16 in the inner surface of the pillar trim 5. On the other hand, the strap guide member 6 is provided on the inner surface of the pillar trim 5 at a position on the vehicle rear side from the clip member 16.

  As shown in FIG. 5, the strap guide member 6 includes a first guide plate 61, a second guide plate 62, and a connecting plate 63, and is configured in an H-shaped rib shape.

  The said 1st guide plate 61 is provided in the inner surface of the pillar trim 5, and makes the board end surface into the slope surface 6a which connects smoothly from the trim bottom part 5a to the trim end part 5b by arrange | positioning orthogonally with the trim end part 5b.

  The second guide plate 62 is provided on the inner surface of the pillar trim 5 and is disposed orthogonally to the trim end portion 5b so that the plate end surface is a slope surface 6a that smoothly connects at least the trim end portion 5b.

  The connecting plate 63 is provided by connecting the inner surface position of the pillar trim 5 and the side surface positions of the guide plates 61 and 62 in parallel arrangement, and is arranged in parallel with the trim end portion 5b so that the first guide plate 61 and the second guide plate 61 are connected to each other. The guide plate 62 is connected.

Next, the operation will be described.
The operation of the curtain airbag device according to the first embodiment will be described by dividing it into “an initial deployment operation of the airbag main body” and “an intermediate to final deployment operation of the airbag main body”.

[Initial deployment of airbag body]
When the airbag sensor unit 8 receives a voltage signal from the satellite sensor 9 that senses deceleration during a side collision exceeding the set limit of the vehicle, it outputs a collision signal to the squib 1a of the inflator 1. Upon receiving the collision signal, the squib 1a burns the heating agent by the electric ignition operation, and this combustion expands the gas in the chamber.

  The inflation gas from the inflator 1 is introduced into the airbag body 2 to inflate the airbag body 2. Then, the gap between the panel end 11d of the pillar panel 11 of the front pillar 10 and the trim end 5b of the pillar trim 5 is defined as a bulging gap, and the airbag main body 2 faces downward so as to cover the front side window and the rear side window. expand.

  When the airbag main body 2 is deployed in this way, as shown in FIG. 6, the strap 3 that supports the front end edge of the airbag main body 2 needs to move into the vehicle interior at the initial stage of deployment of the airbag main body 2. . The movement of the strap 3 in the vehicle interior is performed by passing through the gap between the panel end portion 11d and the trim end portion 5b from the space surrounded by the pillar panel 11 and the pillar trim 5 of the front pillar 10. When the strap 3 moves in the vehicle interior, as shown by the phantom line in FIG. 7, the strap 3 incorporated in the vicinity of the trim bottom portion 5 a in which the airbag main body 2 is accommodated is attached to the slope surface 6 a of the strap guide member 6. And smoothly passes toward the trim end 5b. And the airbag main body 2 and the strap 3 move to a vehicle interior, as shown to the continuous line of FIG.

  That is, when the airbag main body 2 is inflated at the initial stage of deployment of the airbag main body 2, the amount of deformation of the pillar trim 5 toward the vehicle interior gradually increases, so that the panel end 11d and the trim end 5b of the front pillar 10 are increased. Increase the gap. That is, the pillar trim 5 has a shape indicated by a phantom line in FIG. 8 before the airbag body 2 is deployed, but is deformed to a shape indicated by a solid line in FIG.

  When the airbag main body 2 expands simultaneously with the deformation of the pillar trim 5 in the vehicle interior direction, the length of the airbag main body 2 in the vehicle front-rear direction gradually decreases, and the strap 3 is indicated by an arrow C in FIG. Pulled to the rear of the vehicle. Then, the strap 3 moves downward in accordance with the deployment direction of the airbag body 2 (the vehicle downward direction indicated by arrow D in FIG. 7), and pushes the pillar trim 5 downward in the vehicle.

  As described above, due to the deformation of the pillar trim 5 accompanying the expansion of the airbag body 2, the slope surface 6a of the strap guide member 6 faces downward of the vehicle to promote the movement of the strap 3 into the vehicle interior as shown by the solid line in FIG. It changes to the surface. In addition, the force that pushes the pillar trim 5 downward by the strap 3 by the strap 3 becomes a force that promotes the sliding movement of the strap 3 along the slope surface 6 a of the strap guide member 6. That is, the component force of the downward force of the vehicle due to the inclination angle of the slope surface 6a becomes the moving force that the strap 3 slides on the slope surface 6a. Therefore, before the force that pushes the pillar trim 5 downward by the strap 3 by the strap 3 increases, the strap 3 slides from the virtual line position in FIG. 8 to the solid line position in FIG. The move is complete.

As described above, in the first embodiment, the configuration in which the strap guide member 6 having the slope surface 6a is provided at the inner surface position of the pillar trim 5 on the headlining 4 side is employed.
That is, the deformation of the pillar trim 5 in the initial stage of deployment of the airbag main body 2 and the force of pushing the pillar trim 5 downward by the strap 3 by the strap 3 are used to promote the movement of the strap 3 into the vehicle interior.
Therefore, when the airbag main body 2 is deployed, the strap 3 is urged to move into the vehicle interior from the gap between the panel end 11d of the front pillar 10 and the trim end 5b in the initial deployment.

In the first embodiment, the strap 3 is incorporated and arranged along the rib inner surface 5 c provided with a plurality of ribs 19 on the vehicle front side from the clip member 16 among the inner surfaces of the pillar trim 5. And the structure which provided the strap guide member 6 in the position of the vehicle rear side rather than the clip member 16 among the inner surfaces of the pillar trim 5 was employ | adopted.
That is, when the strap 3 is incorporated and arranged along the rib inner surface 5c provided with the plurality of ribs 19, the strap 3 is easily caught on the rib 19, and in particular, the smooth movement of the strap 3 into the vehicle interior cannot be expected. However, if the pillar trim 5 without the ribs 19 is used, the rigidity of the pillar trim 5 cannot be secured.
On the other hand, in the first embodiment, the plurality of ribs 19 are provided to ensure the rigidity of the pillar trim 5 and ensure the smooth movement of the strap 3 into the vehicle interior at the initial stage of deployment of the airbag body 2.

In the first embodiment, the strap guide member 6 includes a first guide plate 61, a second guide plate 62, and a connection plate 63.
That is, the connecting plate 63 serves as a reinforcing plate that increases the mounting rigidity of the guide plates 61 and 62, and even if a force that pushes the vehicle downward from the strap 3 is applied, the deformation of the strap guide member 6 is prevented. In addition, since both guide plates 61 and 62 in parallel arrangement have slope surfaces 6a and 6a, the distance between the two contact surfaces of the strap 3 with respect to the slope surfaces 6a and 6a is parallel to the trim end portion 5b. Guide stability leading to the portion 5b is obtained.
Therefore, at the initial stage of deployment of the airbag main body 2, it is possible to prevent deformation of the strap guide member 6 against the force of pushing the vehicle downward from the strap 3 and to improve the guide stability when the strap 3 is moved into the vehicle interior. The

[Medium-term to final effects of airbag body]
As described above, when a part of the airbag body 2 and the strap 3 are moved into the vehicle interior in the initial stage of deployment of the airbag body 2, as shown by the arrows in FIG. 2 expands further downward in the vehicle.

  At this time, the strap 3 connected to the airbag main body 2 also follows the unfolding operation of the airbag main body 2, and the gap between the panel end 11 d of the pillar panel 11 of the front pillar 10 and the trim end 5 b of the pillar trim 5. To move down the vehicle. This movement is a movement in which the strap 3 is gradually drawn out along the gap of the front pillar 10 as indicated by an arrow E in FIG.

  Then, when the airbag main body 2 reaches the deployment limit toward the vehicle lower side, the deployment end of the airbag main body 2 is reached. As shown in FIG. 11, the deployed airbag main body 2 causes the front side window and the rear side window to be deployed. Cover.

  Thus, by deploying the airbag main body 2 so as to cover the front side window and the rear side window instantaneously at the time of a side collision, the impact on the occupant, particularly the head, can be mitigated by the deployed airbag main body 2. Can do.

Next, the effect will be described.
In the curtain airbag device according to the first embodiment, the following effects can be obtained.

(1) an inflator 1 fixed to the vehicle interior side of the roof side panel 7;
An airbag main body 2 which is connected so as to introduce the inflation gas from the inflator 1 and is installed along the vehicle interior side of the roof side panel 7 to the position of the entrance of the front pillar 10;
A strap 3 having one end connected to the airbag main body 2 and the other end fixed to the pillar panel 11 of the front pillar 10 and supporting the front end edge of the airbag main body 2 when the airbag is deployed;
A headlining 4 which is disposed on the roof portion on the vehicle interior side and covers the vehicle interior side of the roof side panel 7 in which the inflator 1 and the airbag main body 2 are incorporated;
A pillar trim 5 that extends from the headlining 4 and covers the end of the airbag body 2 and the interior side of the pillar panel 11 in which the strap 3 is incorporated;
Smoothly from the trim bottom 5a provided on the inner surface of the pillar trim 5 on the head lining 4 side, in which the end of the airbag body 2 is accommodated, toward the trim end 5b serving as a deployment gap of the airbag body 2. A strap guide member 6 having a connecting slope surface 6a;
Is provided.
For this reason, when the airbag main body 2 is deployed, movement of the strap 3 from the gap between the panel end portion 11d of the front pillar 10 and the trim end portion 5b into the vehicle interior can be urged at the initial deployment stage.

(2) The pillar trim 5 is provided with a clip member 16 that is inserted into and fixed to the pillar panel 11 at an inner surface position on the headlining 4 side, and a plurality of ribs 19 are provided on the inner surface on the vehicle front side from the clip member 16. Rib inner surface 5c,
The strap 3 is incorporated and arranged along the rib inner surface 5c on the vehicle front side of the clip member 16 among the inner surfaces of the pillar trim 5.
The strap guide member 6 is provided on the inner surface of the pillar trim 5 at a position on the vehicle rear side with respect to the clip member 16.
For this reason, in addition to the effect of (1), by providing a plurality of ribs 19, while ensuring the rigidity of the pillar trim 5, the smooth movement of the strap 3 into the vehicle interior is ensured in the initial stage of deployment of the airbag body 2. be able to.

(3) The strap guide member 6 is provided on the inner surface of the pillar trim 5, and a first guide plate 61 having a plate end surface as a slope surface 6a smoothly connecting the trim bottom portion 5a to the trim end portion 5b, and the pillar trim. 5, a second guide plate 62 having a plate end surface that is smoothly connected to at least the trim end portion 5 b, and an inner surface position of the pillar trim 5, and both guide plates 61, 62 in parallel arrangement. , And a connecting plate 63 that connects the first guide plate 61 and the second guide plate 62.
For this reason, in addition to the effect of (2), in the initial stage of deployment of the airbag main body 2, the strap guide member 6 is prevented from being deformed by a force pushing the strap 3 downward from the vehicle, and the strap 3 is moved to the vehicle interior. Improved stability can be achieved.

  The second embodiment is an example in which a strap guide member having a shape of a tower rib specification is applied.

First, the configuration will be described.
FIG. 12 is a perspective view illustrating a strap guide member provided on a pillar trim of the curtain airbag device according to the second embodiment. Hereinafter, a detailed configuration of the strap guide member 6 ′ of the second embodiment will be described.

  As shown in FIG. 12, the strap guide member 6 ′ of the second embodiment includes a tower plate 64 and a guide plate 65, and is configured in the shape of a tower rib specification.

  The tower plate 64 is provided from the position of the trim bottom 5a to a position slightly lower than the trim end 5b among the positions of the inner surface of the pillar trim 5, and is arranged parallel to the trim end 5b so that the outer surface of the plate is the first. 1 slope surface 6a1.

The guide plate 65 is provided by connecting the inner surface position of the pillar trim 5 and the upper surface position of the pillar plate 64, and is arranged orthogonal to the trim end portion 5a, so that the plate end surface is changed from the first slope surface 6a1 to the trim end portion 5b. The second slope surface 6a2 is smoothly connected toward the surface. That is, the slope surface 6a is configured by combining the first slope surface 6a1 and the second slope surface 6a2.
Since other configurations are the same as those of the first embodiment, illustration and description thereof are omitted.

Next, the operation will be described.
In the second embodiment, the strap guide member 6 ′ is configured to have the tower plate 64 and the guide plate 65.
In other words, the mounting strength that prevents the strap guide member 6 ′ from being deformed is secured by the tower plate 64 even when a force pushing the vehicle 3 downward from the strap 3 is applied. In addition, by setting the outer surface of the tower plate 64 as the first slope surface 6a1, a larger area than the slope surface by the plate end surface is secured, and guide stability for guiding the strap 3 to the trim end portion 5b is obtained.
Therefore, the improvement of the attachment strength of the strap guide member 6 'against the force of pushing the vehicle downward from the strap 3 and the improvement of the guide stability when the strap 3 is moved into the vehicle interior are achieved.
Since other operations are the same as those of the first embodiment, description thereof is omitted.

Next, the effect will be described.
In the curtain airbag device of the second embodiment, in addition to the effect (2) of the first embodiment, the following effects can be obtained.

(4) The strap guide member 6 ′ is provided to straddle from the position of the trim bottom portion 5 a to a position slightly lower than the trim end portion 5 b among the inner surface positions of the pillar trim 5, and the outer surface of the plate is the first slope surface 6 a 1. And a second plate that connects the inner surface position of the pillar trim 5 and the upper surface position of the tower plate 64, and smoothly connects the plate end surface from the first slope surface a1 toward the trim end portion 5b. And a guide plate 65 as a slope surface a2.
For this reason, at the initial stage of deployment of the airbag main body 2, the attachment strength of the strap guide member 6 'with respect to the force of pushing the vehicle downward from the strap 3 is improved, and the guide stability when the strap 3 is moved into the vehicle interior is improved. , Can be achieved.

  The third embodiment is an example in which a strap guide member having a T-rib shape is applied.

First, the configuration will be described.
FIG. 13 is a perspective view illustrating a strap guide member provided on a pillar trim of the curtain airbag device according to the third embodiment. Hereinafter, a detailed configuration of the strap guide member 6 ″ of the third embodiment will be described.

  As shown in FIG. 12, the strap guide member 6 ″ according to the second embodiment includes a guide plate 66 and a reinforcing plate 67, and is configured in a T-rib shape.

  The guide plate 66 is provided on the inner surface of the pillar trim 5 and is disposed orthogonally to the trim end portion 5b, so that the plate end surface is a slope surface 6a that smoothly connects the trim bottom portion 5a to the trim end portion 5b.

The reinforcing plate 67 is provided by connecting the inner surface position of the pillar trim 5 and the side surface position of the guide plate 66, and reinforces the guide plate 66 by being arranged in parallel with the trim end portion 5b. The reinforcing plate 67 has a triangular shape.
Since other configurations are the same as those of the first embodiment, illustration and description thereof are omitted.

Next, the operation will be described.
In Example 3, a configuration having a guide plate 66 and a reinforcing plate 67 was adopted as the strap guide member 6 ″.
In other words, the reinforcing plate 67 that reinforces the guide plate 66 prevents the strap guide member 6 ″ from being deformed even if a downward pushing force from the strap 3 is applied to the guide plate 66. In addition, the strap guide member 6 ″ is prevented from being deformed. Compared with the strap guide member 6 of Example 1, it can be set as a simple structure.
Therefore, it is possible to prevent the strap guide member 6 ″ from being deformed by a force pushing the strap 3 downward from the strap 3 with a simple configuration.
Since other operations are the same as those of the first embodiment, description thereof is omitted.

Next, the effect will be described.
In the curtain airbag device of the third embodiment, in addition to the effect (2) of the first embodiment, the following effects can be obtained.

(5) The strap guide member 6 ″ is provided on the inner surface of the pillar trim 5, and a guide plate 66 having a plate end surface as a slope surface 6a smoothly connecting the trim bottom portion 5a to the trim end portion 5b, and the pillar trim 5 And a reinforcing plate 67 that reinforces the guide plate 66.
For this reason, it is possible to achieve the prevention of deformation of the strap guide member 6 ″ against the force of the strap 3 pushing downward in the vehicle in the initial stage of deployment of the airbag body 2 with a simple configuration.

  As mentioned above, although the curtain airbag apparatus of this invention has been demonstrated based on Example 1-3, it is not restricted to these Examples about a concrete structure, Each claim of a claim Design changes and additions are permitted without departing from the spirit of the invention.

  In Example 1, the structure which has the 1st guide plate 61, the 2nd guide plate 62, and the connection plate 63 as the strap guide member 6 was shown. In the second embodiment, the strap guide member 6 ′ is configured to include the tower plate 64 and the guide plate 65. In the third embodiment, a configuration including the guide plate 66 and the reinforcing plate 67 is shown as the strap guide member 6 ″. However, the specific configuration of the strap guide member is limited to the configuration shown in the first to third embodiments. In short, if the strap guide member has a slope surface that smoothly connects from the trim bottom where the end of the airbag body is stored to the trim end that becomes the development gap of the airbag body, Various modifications are also included.

  In Examples 1-3, the example which applied the curtain airbag device of the present invention to the electric vehicle was shown. However, the curtain airbag device of the present invention can of course be applied to vehicles other than electric vehicles, for example, other vehicles such as engine vehicles, hybrid vehicles, and fuel cell vehicles.

DESCRIPTION OF SYMBOLS 1 Inflator 1a Squib 2 Airbag main body 3 Strap 4 Headlining 5 Pillar trim 5a Trim bottom part 5b Trim end part 5c Rib inner surface 6 Strap guide member 6a Slope surface 61 First guide plate 62 Second guide plate 63 Connecting plate 7 Roof side panel 8 Airbag sensor unit 9 Satellite sensor 10 Front pillar 11 Pillar panel 11d Panel end 12 Roof panel 13 Center pillar 14 Pillar trim 15 Pillar panel 16 Clip member 17 Weather strip 18 Main clip member 19 Rib 6 'Strap guide member 6a Slope surface 6a1 First 1 slope surface 6a2 second slope surface 64 tower plate 65 guide plate 6 "strap guide member 6a slope surface 66 guide plate 67 reinforcing plate

Claims (5)

An inflator fixed to the vehicle interior side of the roof side panel;
An airbag main body connected so as to introduce inflation gas from the inflator and incorporated into the entrance portion of the front pillar along the vehicle interior side of the roof side panel;
One end is connected to the airbag body, the other end is fixed to the pillar panel of the front pillar, and when the airbag is deployed, a strap that supports the front edge of the airbag body;
A headlining that is disposed on the roof portion on the vehicle interior side and covers the vehicle interior side of the roof side panel in which the inflator and the airbag main body are incorporated;
Pillar trim that extends from the headlining and covers the interior side of the pillar panel in which the end of the airbag body and the strap are incorporated;
A strap provided on an inner surface of the pillar trim on the head lining side and having a slope surface that smoothly connects from a trim bottom portion in which an end portion of the airbag main body is stored toward a trim end portion serving as a development gap of the airbag main body. A guide member;
A curtain airbag device comprising: In the curtain airbag device according to claim 1,
The pillar trim is provided with a clip member that is inserted and fixed to the pillar panel at the inner surface position on the headlining side, and the inner surface on the vehicle front side from the clip member is a rib inner surface provided with a plurality of ribs,
The strap is incorporated and arranged along the inner surface of the pillar trim along the rib inner surface of the vehicle front side from the clip member,
The curtain guide device according to claim 1, wherein the strap guide member is provided at a position on the rear side of the vehicle from the clip member on the inner surface of the pillar trim. In the curtain airbag device according to claim 2,
The strap guide member is provided on the inner surface of the pillar trim, and is provided on the inner surface of the pillar trim, the first guide plate having a plate end surface that smoothly connects the trim bottom portion to the trim end portion. A second guide plate having a slope surface smoothly connected to at least the trim end portion, an inner surface position of the pillar trim, and a side surface position of the both guide plates in a parallel arrangement; and the first guide plate and the first guide plate A curtain airbag device comprising a connecting plate for connecting two guide plates. In the curtain airbag device according to claim 2,
The strap guide member is provided to straddle from the position of the bottom of the trim to a position slightly lower than the end of the trim among the positions of the inner surface of the pillar trim. A guide plate provided by connecting an inner surface position and an upper surface position of the tower plate, and having a plate end surface smoothly connected from the first slope surface toward the trim end portion. Curtain airbag device. In the curtain airbag device according to claim 2,
The strap guide member is provided on the inner surface of the pillar trim, and a guide plate having a plate end surface that smoothly connects the trim bottom portion to the trim end portion, and an inner surface position of the pillar trim and a side surface position of the guide plate. A curtain airbag device, comprising: a reinforcing plate that is connected and reinforces the guide plate.

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