JP2000168485A - Seat for vehicle incorporating air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize the expanding performance while restraining the energy loss due to the deformation of a seat pad at the time of expanding an air bag. SOLUTION: A resin press felt 44 made of the material harder than a general part 36A of a seat pad 36 and for guiding an air bag body 28 in the predetermined direction while being deformed by the expansion pressure of the air bag body 28 is arranged in a front side extension part 38A of a felt 38 extended to a door side from a flange 18A of a side frame 18 of a seat back frame. A door side part 44A of the resin press felt 44 is arranged in front of the air bag body 28, and an inside part 44B of the resin press felt 44 in the cross direction thereof is overlapped with the flange part 18A of the side frame 18 by the predetermined quantity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat incorporating an airbag device, and more particularly to a vehicle seat incorporating an airbag device on a side portion of a seat back frame.

[0002]

2. Description of the Related Art Conventionally, as an example of a vehicle seat having an airbag device built in a side portion of a seatback frame,
JP-A-10-76904 is known.

As shown in FIG. 10, in a vehicle seat incorporating the airbag device, the pad 102 of the seatback 100 receives the deployment pressure of the airbag 104 from the pad 102, and the pad 102 starts to expand and break. A notch groove 106 is provided as a pad spreading starting point setting part, and the notch groove 106 is formed by the airbag 104 with the pad 10.
2 is set at a position offset in the airbag bag deployment direction until it comes into contact with the inner surface of the seat. Further, the cut groove portion 106 is provided on a side opposite to the center of the seat with respect to a line 112 connecting the top of the side support 100A and the axis of the inflator 110 in the airbag device 108.

[0004]

However, in the vehicle seat incorporating the airbag device, if the pad 102 is formed softly in order to improve the sitting comfort, the pad 102 is inflated when the airbag bag body 104 is inflated and deployed. 10
2 easily expands like a balloon. As a result, in the process until the airbag bag 104 breaks the pad 102 and the skin 114, energy loss related to the deployment performance of the airbag bag 104 occurs. For this reason, the airbag bag 104
Deployment performance may be unstable.

In view of the above, it is an object of the present invention to provide a vehicle seat including an airbag device capable of suppressing energy loss due to deformation of a seat pad during deployment.

[0006]

According to a first aspect of the present invention, there is provided a vehicle seat incorporating an airbag device according to the present invention, wherein the airbag device fixed to a door side of a seat back side frame is opened rearward of the vehicle. In a vehicle seat containing an airbag device housed in a recess of a seatpad and covering them with a seat skin, a flat surface connecting an axis of an inflator of the airbag device and a sewing portion for breaking the seat skin is provided. A seat pad located closer to the center of the seat and located in the airbag bag deployment area is harder than the general portion of the seatpad, and is deformed by the inflation pressure of the airbag bag to guide the airbag bag in a predetermined direction. A guide means is provided.

Therefore, by the guide means additionally set to the seat pad, in the initial stage of deployment of the airbag body, the deployment direction of the airbag body is deflected by the rigidity effect, and the deployment aimed at the seam for breaking the seat skin is performed. realizable. As a result, energy loss due to deformation of the seat pad during deployment of the airbag bag can be suppressed, and pressure can be concentrated on the break sewing portion,
Since this can be instantaneously broken, the deployment speed of the airbag bag can be improved. In addition, the guide means is deformed by the inflation pressure of the airbag body with the deployment of the airbag body, and guides the airbag body in a predetermined direction. it can.

According to a second aspect of the present invention, in the vehicle seat incorporating the airbag device according to the first aspect, the guide means is a resin press felt.

Therefore, in addition to the contents described in the first aspect, by using a resin press felt as the guide means, the production is facilitated and the cost can be reduced.

According to a third aspect of the present invention, in the vehicle seat incorporating the airbag device according to the first aspect, the guide means is a hard pad which is harder than a general portion of the pad.

Therefore, in addition to the contents described in the first aspect, by making the guide means a hard pad, it is easy to manufacture and the cost can be reduced.

According to a fourth aspect of the present invention, in the vehicle seat incorporating the airbag device according to the first aspect, the guide means extends to a position inside the seat width direction in which the guide means overlaps a predetermined amount with the front end of the seat back side frame. It is characterized by being extended.

Therefore, in addition to the contents described in the first aspect, it is difficult for the deployable airbag body to enter between the front end of the seat back side frame and the seat pad.
The deployment direction of the airbag body can be reliably adjusted.

According to a fifth aspect of the present invention, there is provided a vehicle seat including the airbag device according to the first aspect, wherein the guide means is a deformable plate having one end fixed to a front end of a seat back side frame. There is a feature.

Therefore, in addition to the contents described in the first aspect, the deployment direction of the airbag body can be easily adjusted by the material and thickness of the plate.

According to a sixth aspect of the present invention, there is provided an airbag system in which an airbag device fixed to a door side of a seat back side frame is accommodated in a recess of a seat pad opened to the rear of the vehicle and covered with a seat cover. In a vehicle seat having a built-in bag device, a seat pad located in an airbag body deployment area closer to the center of the seat than a plane connecting an axis portion of an inflator of the airbag device and a sewn portion for rupture of a seat skin. And a hard pad which is harder than a general portion of the pad.

Therefore, in the initial stage of the deployment of the airbag body, the rigid pad located in the airbag body deployment area deflects the deployment direction of the airbag body due to its rigidity effect, thereby forming the sewing portion for breaking the seat skin. The targeted deployment is realized. As a result, energy loss due to the deformation of the seat pad during deployment of the airbag body can be prevented, pressure can be concentrated on the sewn portion for breakage, and this can be broken instantaneously, thereby improving the deployment speed of the airbag body. it can. Further, as the airbag bag is deployed, the hard pad located in the airbag bag deployment area is deformed by the inflation pressure of the airbag bag, and the airbag is guided in a predetermined direction. The time required to complete the bag deployment can be shortened.

According to a seventh aspect of the present invention, there is provided a vehicle seat including the airbag device according to any one of the first to sixth aspects, wherein the seatpad faces the door side of the airbag device. An auxiliary guide means, which is harder than the general portion of the pad and is deformable by the inflation pressure of the airbag body, is provided on the side surface.

Therefore, in addition to the contents described in any one of the first to sixth aspects, the deployment direction of the airbag body can be effectively adjusted by both the guide means and the auxiliary guide means, and the caseless side is provided. In the case of the airbag device, since the airbag device itself is soft, if the thickness of the pad is thin, the rigidity of the seat side portion touched from outside may be insufficient, but the rigidity of the seat side portion is impaired by setting the auxiliary guide means. There is nothing.

According to an eighth aspect of the present invention, in the vehicle seat incorporating the airbag device according to the seventh aspect, the auxiliary guide means is fixed to a door side portion of a seat back side frame when a side collision occurs. It is characterized in that it extends to a protector for securing a deployment space for the airbag bag body and a rearward position where the airbag wraps by a predetermined amount.

Therefore, the interference between the edge of the protector and the pad can be prevented by the auxiliary guide means, so that the pad can be prevented from being damaged by the edge of the protector.

According to a ninth aspect of the present invention, there is provided an airbag device in which an airbag device fixed to a door side portion of a seat back side frame is housed in a recess of a seat pad opened rearward of the vehicle and covered with a seat cover. In a vehicle seat having a built-in bag device, the seat is located in an airbag body deployment area closer to the center of the seat than a plane connecting an axis of an inflator of the airbag device and a sewing portion for breaking the seat skin. It is provided on the back side frame,
The seat pad is harder than a general portion of the seat pad, and is provided with guide means for deforming by the inflation pressure of the air bag body and guiding the air bag body in a predetermined direction.

Therefore, in the initial stage of deployment of the airbag body, the deployment direction of the airbag body is deflected by the rigidity effect of the guide means provided on the seat back side frame, and the deployment is aimed at the sewing portion for breaking the seat skin. Can be realized. As a result, energy loss due to deformation of the seat pad during deployment of the airbag bag can be suppressed, pressure can be concentrated on the sewn portion for breaking, and this can be broken instantaneously, thereby improving the deployment speed of the airbag bag. Can be. In addition, the guide means is deformed by the inflation pressure of the airbag body with the deployment of the airbag body, and guides the airbag body in a predetermined direction. it can.

According to a tenth aspect of the present invention, there is provided a vehicle seat incorporating the airbag device according to any one of the first, sixth, and ninth aspects, wherein the airbag device comprises an airbag caseless. It is a type of airbag device.

Therefore, the operation according to any one of the first, sixth, and ninth aspects can be obtained even in a vehicle seat incorporating an airbag device of an airbag caseless type.

According to an eleventh aspect of the present invention, in the vehicle seat having the airbag device according to any one of the first, sixth, and ninth aspects, the guide means includes the seat back side frame. Characterized in that it is a deformable plate having one end fixed to the side surface of the plate.

Therefore, claims 1, 6, and 9 are provided.
In addition to the contents described in any of the above, since the guide means is fixed to the seat back side frame, the seat back side frame and the seat pad may have the same structure as the conventional structure, manufacturing becomes easy, and cost reduction becomes possible. .

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a vehicle seat incorporating an airbag device of the present invention will be described with reference to FIGS.

The arrow UP in the figure indicates the upward direction of the vehicle, the arrow FR in the figure indicates the forward direction of the vehicle, and the arrow IN in the figure.
Indicates the inside direction of the vehicle width.

As shown in FIG. 5, in the seat structure provided with the side airbag device of the present embodiment, the side portion 1 formed on the door side of the seat back 12 of the seat 10 is provided.
An airbag device 14 extending in the up-down direction is provided in 2A.

As shown in FIG. 3, the seat back frame 16 includes a pair of left and right seat back side frames (hereinafter referred to as side frames) 18 and 20 as strength members. They are arranged substantially parallel to each other in the front-rear direction. The upper ends of the pair of left and right side frames 18 and 20 are connected to each other by an upper frame 22 made of a pipe material bent in a U-shape. Further, the rear edges of the pair of left and right side frames 18 and 20 are connected to each other by a plurality of sheet wires 24.

An airbag device to be described later is fixed to the side frame 18 on the door side. Thereafter, the seat pad 36 shown in FIG. 4 is covered by the seat frame 16 from above, and a seat skin 50 to be described later is covered on the outside of the seat pad 36, thereby forming the seat 10 of the present embodiment.

As shown in FIG. 1, a flange 18A is formed at the front end of the side frame 18 on the side door side (hereinafter referred to as the door side) of the vehicle so as to face the inside of the seat. A flange 18B is formed at the rear end toward the inside of the seat. In the middle part of the side frame 18 in the front-rear direction, a recess 26 for storing the airbag device is formed which is recessed inward in the seat along the seat up-down direction. The rear part of the recess 26 for storing the airbag device is further depressed inwardly of the seat to form an inflator storage 26A.

A folded airbag body 28 is stored in the airbag device storage recess 26 and in front of the recess 26. A cylindrical inflator 30 is stored in the inflator storage portion 26A, and two upper and lower bolts 29 erected from the outer peripheral portion of the inflator 30 inward in the vehicle width direction. The inflator 30 is fixed to the side frame 18 by the nut 31 thus formed. Further, the inflator 30 is used for the airbag 2.
The airbag body 28 is disposed inside the airbag 8 and is deployed substantially forward of the vehicle by gas ejected from the inflator 30.

A protector 32 is provided on the outer peripheral portion of the inflator 30 outside the airbag bag 28 so that a space for deploying the airbag bag 28 can be secured at the time of a side collision. Has become.
The protector 32 has a U-shaped cross section as viewed from above and below, with the opening facing forward, and the vehicle width direction inner side wall 32A is welded to the inflator housing 26A.

The airbag bag 28 is held in a folded state by a wrap 34 made of a cloth bag or the like, and the wrap 34 can be easily broken when the airbag 28 is deployed. ing.

The seat pad 36 that covers the seat back frame has an opening 37 on the rear side of the vehicle, and the airbag device 14 is housed in a concave portion 39 formed on the inside on the door side. A felt 38 is provided on the inner side surface of the seat pad 36, and a portion of the seat pad 36, which is on the front side of the door-side front end portion 28 </ b> A of the folded airbag body 28, is substantially provided. A concave portion 40 that is recessed forward is formed substantially along the vertical direction. This recess 4
At 0, a notch 42 is formed in the felt 38 and extends substantially vertically, so that when the airbag body 28 is deployed, the seat pad 36 is easily broken along the recess 40.

The front extension 38A of the felt 38 extended from the flange 18A of the side frame 18 toward the door.
2, the airbag body 28 is deformed by the inflation pressure of the airbag body 28 as shown in FIG. 2 so as to move the airbag body 28 in a predetermined direction (arrow A in FIG. 2).
Direction), a resin press felt 44 is provided as a guide means.
Is sandwiched between the seat pad 36 and the felt 38. The resin press felt is a felt made of a resin material such as a resin waste material in a pressed state, impregnated with a resin, and solidified.

That is, as shown in FIG. 1, the center of the sheet is closer to the center of the sheet than a plane S1 connecting an axis P of the inflator 30 and a break sewing portion 54 of the sheet skin 50 described later (FIG. 1).
A resin press felt 44 is disposed on the inner surface of the seat pad 36 located at the right side of the seat pad 36 and in the deployment region of the airbag bag 28.

The door side 44A of the resin press felt 44 is located in front of the airbag body 28, and the vehicle width direction inner side 44B of the resin press felt 44 wraps a predetermined amount with the flange 18A of the side frame 18. .

The side extension 3 of the felt 38 extending from the door side wall 32B of the protector 32 to the front of the vehicle.
8B is harder than the side camber portion 36B as a general portion of the seat pad 36 and is deformed by the inflation pressure of the airbag bag 28 as shown in FIG.
A resin press felt 46 is provided as an auxiliary guide means for guiding the sheet in a predetermined direction (the direction of arrow A in FIG. 2).
And felt 38. The vehicle front side portion 46A of the resin press felt 46 is on the door side of the airbag body 28, and the vehicle rear side portion 46B of the resin press felt 46 is on the door side wall portion 32B of the protector 32.
And a predetermined amount of wrap.

The outside of the seat pad 36 is the seat cover 5.
Covered with 0. In the seat skin 50, several skins are sewn at seams 52, 54 and the like, and the seam 54 facing the front end edge of the side camber portion 36 </ b> B of the seat pad 36 is used when the airbag body 28 is deployed. Seam 54 as a breakable seam that is easily broken
It has become. One end 58A of the webbing 58 is connected to the seam 54, and the other end 5A of the webbing 58 is connected to the seam 54.
8B is an inflator storage portion 26A of the side frame 18.
, Are fastened together with a bolt 29 for fixing the inflator. The intermediate portion 58C of the webbing 58 passes through the outer peripheral portion of the side pad portion 36B of the seat pad 36 on the door side. When the airbag bag is deployed, the breaking force is effectively applied to the seam 54 via the webbing 58. To act on.

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

In the seat structure provided with the airbag device for side collision according to the present embodiment, when the inflator 30 of the airbag device 14 operates at the time of a side collision, the airbag body 28 is inflated by the gas ejected from the inflator 30. expand. At this time, due to the rigidity effect of the resin press felts 44 and 46, at the initial stage of deployment of the airbag bag 28, the deployment direction of the airbag bag 28 is deflected toward the vehicle outward direction as shown by a solid line in FIG. Angle α1 direction (see FIG. 1) aimed at a seam 54 as a break sewing portion of the sheet skin 50
Deployment can be realized. As a result, energy loss due to deformation of the seat pad 36 during deployment of the airbag bag can be suppressed, and pressure can be concentrated on the seam 54 as a sewing portion for breakage, which can be broken instantaneously.
8 can be improved in speed.

Further, a seam 54 as a break sewing portion is provided.
2 is broken by the inflation pressure of the airbag bag 28, as shown by the dashed line in FIG.
Is further deformed, and the airbag bag 28 is deployed in the direction of the angle α2 (α2 <α1) (see FIG. 1) aimed at between the vehicle body side portion 60 and the occupant side portion 62. Therefore, the time until the deployment of the airbag bag 28 indicated by the two-dot chain line in FIG. 2 can be shortened.

Further, in this embodiment, since both the resin press felt 44 as the guide means and the resin press felt 46 as the auxiliary guide means are used, the deployment direction of the airbag body 28 can be effectively adjusted. .

In this embodiment, since the guide means is made of the resin press felt 44 and the auxiliary guide means is made of the resin press felt 46, the production becomes easy and the cost can be reduced.

In the present embodiment, the inner portion 44B of the resin press felt 44 in the vehicle width direction is extended to a position where the resin press felt 44 overlaps the flange 18A of the side frame 18 by a predetermined amount. Since it is difficult to enter between the flange 18A of the side frame 18 and the general portion 36A of the seat pad 36, the deployment direction of the airbag bag 28 can be reliably adjusted.

In the present embodiment, the airbag device 1
Since the resin press felt 46 is arranged on the side of the door 4 of the case 4, the caseless side airbag device 14 as in the present embodiment is soft because the airbag device itself is soft.
If the side camber portion 36B of the seat pad 36 is thin, there is a concern that the rigidity of the seat touched from the outside may be insufficient, but the rigidity is not impaired by the resin press felt 46.

In this embodiment, since the protector 32 is disposed, the protector 32 can secure a space for deploying the airbag 28 at the time of a side collision.

In the present embodiment, since the vehicle rear side portion 46B of the resin press felt 46 is extended to a position where it overlaps the door side wall portion 32B of the protector 32 by a predetermined amount, the edge 32C of the protector 32 is used. The damage of the felt 38 and the pad 36 can be prevented.

Next, a second embodiment of the vehicle seat incorporating the airbag device of the present invention will be described with reference to FIG.

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. 6, in the present embodiment, instead of the resin press felt 44 of the first embodiment, a hard pad 64 as guide means harder than the general portion 36A of the seat pad 36 is provided. In place of the resin press felt 46 of the first embodiment, a hard pad 66 is provided as auxiliary guide means that is harder than the side camber portion 36B of the seat pad 36.

Therefore, in the present embodiment, the same effects as in the first embodiment can be obtained. Further, since the guide means is made of the hard pad 64 and the auxiliary guide means is made of the hard pad 66, the production becomes easy and the cost can be reduced.

Next, a third embodiment of a vehicle seat incorporating the airbag device of the present invention will be described with reference to FIG.

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. 7, in the present embodiment, instead of the resin press felt 44 of the first embodiment, a deformable plate 68 made of a plate material such as metal or resin is provided as guide means. I have. Door end 6 of plate 68
8A is folded back toward the front of the vehicle, and when the airbag bag 28 contacts the plate 68, the airbag bag 2
8 and the plate cutout 68C of the plate 68 do not come into contact with each other. Inside portion 68B in the vehicle width direction of plate 68
Is fixed to the flange 18A of the side frame 18 by a fixing means 70 such as a rivet or a screw.

Therefore, in the present embodiment, the same effects as in the first embodiment can be obtained. Further, the deployment direction of the airbag bag body 28 can be easily adjusted by the material and thickness of the plate 68.

Next, a fourth embodiment of a vehicle seat incorporating the airbag device of the present invention will be described with reference to FIG.

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. 8, in the present embodiment, instead of the resin press felt 44 of the first embodiment, a plate 45 as guide means is disposed on the felt 38 side of the air bag body 28, and 45 to side frame 1
8 and extend rearward along the rear end 45C of the plate 45.
Are fastened to the door side surface of the inflator storage section 26A by bolts 29 and nuts 31. In addition, plate 4
Reference numeral 5 is made of a deformable plate material such as resin or metal.

Therefore, also in the present embodiment, the door side portion 45A of the plate 45 is deformed by the inflation pressure of the airbag bag 28, and the same effect as in the first embodiment can be obtained. Further, depending on the material and thickness of the resin plate 45, the airbag bag 28 may be used.
Can easily be adjusted in the developing direction. Further, the plate 45 connects the inflator 30 to the side frame 18.
Since it is fixed to the side frame 18 by bolts 29 and nuts 31 for fixing to the side frame, it is only necessary to add the plate 45 to the conventional seat structure, and the side frame 18 and the seat pad 36 may have the conventional structure, Manufacturing becomes easy and cost reduction becomes possible.

Next, a fifth embodiment of a vehicle seat incorporating the airbag device of the present invention will be described with reference to FIG.

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 the present embodiment, instead of the resin press felt 44 of the first embodiment, a shaft center portion P of the inflator 30 of the airbag device 14 and a sewing portion for breaking the seat skin 50 are provided. The portion (the portion indicated by hatching in FIG. 9) located in the airbag body deployment area closer to the center of the seat (the right side in FIG. 9) than the plane S <b> 1 connecting the seam 54 as the other general portion of the pad 36 36A and the hard pad 72 which is harder than the side camber portion 36B.

Therefore, the hard pad 72 located in the airbag bag deployment area prevents energy loss at the time of airbag deployment as in the first embodiment, and provides a seam as a break sewing portion of the seat skin 50. By concentrating the pressure on the airbag 54 and instantaneously breaking it,
Deployment speed can be improved. Moreover, since the hard pad 72 is further deformed by the inflation pressure of the airbag bag 28, similarly to the first embodiment, the airbag bag 2
8 unfolds in the direction between the vehicle body side and the occupant side. Therefore, the time until the deployment of the airbag bag 28 is completed can be shortened. Further, the occupant holdability of the seat back can be improved by the hard pad 72.

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 included 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 auxiliary guide means including the resin press felt 46 or the hard pad 66 is provided, but the configuration may be such that the auxiliary guide means is omitted.
Further, the folded shape of the airbag bag body 28 is not limited to the folded shape of each of the above embodiments, and may be a cactus fold,
Other folding shapes such as roll folding may be used. Further, the means for holding the folded shape of the airbag body 28 is not limited to the wrapping material 34 in each of the above embodiments, and another shape holding member such as a belt may be used. Wrap material 3
4 may use a paper material other than a cloth bag. Further, the seat pad of the present invention may have a configuration in which the felt 38 is not provided in addition to the configuration in which the felt 38 is disposed on the inner surface of the seat of the seat pad 36 as in the above-described embodiment.

Although the present embodiment is a seat provided with a conventional airbag device without an airbag case without an airbag case, the present invention is not limited to this, and an airbag device having an airbag case is not limited to this. Also in the seat provided with the above, the same effect as in the above embodiment can be obtained as long as the airbag bag body comes into contact with the seat pad at the time of deployment, so that the seat pad expands and breaks. . Therefore, the present invention can be applied to a seat provided with an airbag device having an airbag case.

[0070]

The vehicle seat incorporating the airbag device according to the first aspect of the present invention has an excellent effect that energy loss due to deformation of a seat pad during deployment can be suppressed and deployment performance can be stabilized. Having. In addition, there is an excellent effect that the time for completing the deployment of the airbag body can be shortened.

The present invention described in claim 2 has an excellent effect that the manufacturing is easy and the cost can be reduced in addition to the effect described in claim 1.

The present invention described in claim 3 has, in addition to the effects described in claim 1, an excellent effect that manufacturing is easy and cost reduction is possible.

The present invention described in claim 4 has an excellent effect that the deployment direction of the airbag body can be reliably adjusted in addition to the effect described in claim 1.

The fifth aspect of the present invention has an excellent effect that the deployment direction of the airbag body can be easily adjusted in addition to the effect of the first aspect.

The vehicle seat incorporating the airbag device of the present invention has an excellent effect that energy loss due to deformation of the seat pad during deployment can be suppressed, and the deployment performance can be stabilized. In addition, there is an excellent effect that the time for completing the deployment of the airbag body can be shortened.

According to a seventh aspect of the present invention, in addition to the effects of the first to sixth aspects, the deployment direction of the airbag bag can be effectively adjusted and the rigidity of the side portion of the seat back can be improved. Has an excellent effect of not being impaired.

The present invention described in claim 8 has an excellent effect that damage to the pad due to the edge of the protector can be prevented in addition to the effect described in claim 7.

The vehicle seat incorporating the airbag device according to the ninth aspect of the present invention has an excellent effect that the energy loss due to the deformation of the seat pad during deployment can be suppressed and the deployment performance can be stabilized. . In addition, there is an excellent effect that the time for completing the deployment of the airbag body can be shortened.

According to the tenth aspect of the present invention, the effect according to any one of the first, sixth and ninth aspects can be obtained in a vehicle seat having a built-in airbag device of an airbag caseless type. It has an excellent effect.

The present invention described in claim 11 provides the effects described in any of claims 1, 6, and 9 in addition to the effects described in claim 9.
It has an excellent effect that manufacturing is easy and cost reduction is possible.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view taken along line 1-1 of FIG.

FIG. 2 is an operation explanatory view of a vehicle seat incorporating the airbag device according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing a seat back frame of a vehicle seat incorporating the airbag device according to the first embodiment of the present invention, as viewed obliquely from the front.

FIG. 4 is a perspective view showing a seat pad of a vehicle seat incorporating the airbag device according to the first embodiment of the present invention, as viewed obliquely from the front.

FIG. 5 is a perspective view showing a vehicle seat incorporating the airbag device according to the first embodiment of the present invention, as viewed obliquely from the front.

FIG. 6 is a sectional view corresponding to FIG. 1, showing a vehicle seat incorporating an airbag device according to a second embodiment of the present invention.

FIG. 7 is a sectional view corresponding to FIG. 1, showing a vehicle seat incorporating an airbag device according to a third embodiment of the present invention.

FIG. 8 is a sectional view corresponding to FIG. 1 showing a vehicle seat incorporating an airbag device according to a fourth embodiment of the present invention.

FIG. 9 is a sectional view corresponding to FIG. 1 showing a vehicle seat incorporating an airbag device according to a fifth embodiment of the present invention.

FIG. 10 is a cross-sectional view corresponding to FIG. 1, showing a vehicle seat incorporating an airbag device according to a conventional embodiment.

[Explanation of symbols]

 Reference Signs List 10 seat 12 seat back 12A side portion of seat back 14 airbag device 16 seatback frame 18 seatback side frame 20 seatback side frame 26 recess for storing airbag device 28 airbag bag body 30 inflator 32 protector 34 wrap material 36 sheet Pad 36A General part of seat pad 36B Side camber part (general part) of seat pad 38 Felt 44 Resin press felt (guide means) 45 Plate (guide means) 46 Resin press felt (auxiliary guide means) 50 Seat skin 54 Break sewing part Seam 64 Hard pad (guide means) 66 Hard pad (auxiliary guide means) 68 Plate (guide means) 72 Hard pad

Claims (11)

[Claims] 1. A vehicle having a built-in airbag device in which an airbag device fixed to a door side portion of a seatback side frame is housed in a concave portion of a seatpad opened to the rear of the vehicle and covered with a seat cover. In the seat, the seat pad located in the air bag body deployment area closer to the center of the seat than the plane connecting the axial center portion of the inflator of the air bag device and the sewn portion for breaking the seat skin, the general portion of the seat pad A vehicle seat having a built-in airbag device, characterized by being provided with guide means which are harder and are deformed by the inflation pressure of the airbag body to guide the airbag body in a predetermined direction. 2. The vehicle seat according to claim 1, wherein the guide means is a resin press felt. 3. The vehicle seat according to claim 1, wherein the guide unit is a hard pad that is harder than a general portion of the pad. 4. The vehicle having a built-in airbag device according to claim 1, wherein the guide means extends to an inner position in a seat width direction in which the guide means overlaps a front end portion of the seat back side frame by a predetermined amount. Sheet. 5. The vehicle seat according to claim 1, wherein the guide means is a deformable plate having one end fixed to a front end of the seat back side frame. 6. A vehicle having a built-in airbag device in which an airbag device fixed to a door side portion of a seatback side frame is housed in a concave portion of a seatpad opened rearward of the vehicle and covered with a seat cover. In the seat, the seat pad located in the airbag body deployment area closer to the center of the seat than the plane connecting the axial center portion of the inflator of the airbag device and the sewn portion for breaking the seat skin, A vehicle seat incorporating an airbag device, comprising a hard pad. 7. An auxiliary guide means, which is harder than a general portion of the pad and is deformable by the inflation pressure of the airbag body, is provided on an inner surface of the seat pad facing the door side of the airbag device. A vehicle seat incorporating the airbag device according to any one of claims 1 to 6. 8. A protector fixed to the door side of the seat back side frame for securing a space for deploying the airbag body at the time of a side collision, and extending to a rear position for wrapping by a predetermined amount. A vehicle seat incorporating the airbag device according to claim 7, wherein the vehicle seat is provided. 9. A vehicle having a built-in airbag device in which an airbag device fixed to a door side portion of a seatback side frame is housed in a concave portion of a seatpad opened to the rear of the vehicle and covered with a seat cover. In the seat, the airbag device is located in the airbag bag deployment area closer to the center of the seat than a plane connecting the axial center portion of the inflator of the airbag device and the sewn portion for breaking of the seat skin, and is provided on the seatback side frame, A vehicle having a built-in airbag device, characterized by being provided with guide means which are harder than the general portion of the seat pad and which are deformed by the inflation pressure of the airbag body and guide the airbag body in a predetermined direction. Sheet. 10. The airbag device according to claim 1, wherein the airbag device is an airbag device of an airbag caseless type. Vehicle seat. 11. The apparatus according to claim 1, wherein said guide means is a deformable plate having one end fixed to a side surface of said seat back side frame. A vehicle seat incorporating the airbag device according to the above.