JP2003048503A - Heat part protection air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a head part protection air bag device capable of smoothly guiding an air bag by a guide member to complete deployment even when constituting the air bag so as to generate tension in the forward and backward directions on a lower fringe side upon completion of deployment and inflation. SOLUTION: This head part protection air bag device M1 is provided with the air bag 16 folded and stored in an upper fringe side of a window SW, an inflater 37 for supplying inflating gas into the air bag 16, the guide member 41 attached to a vehicle body side and arranged in the vertical direction so as to guide downward deployment of the air bag 16, and an engaging part 32 arranged in the air bag 16, engaged with the guide member 41, and guided by the guide member 41 when the air bag 16 is deployed and inflated. An initial vertical inflating part 24A inflating along the guide member 41 so as to lower and move the engaging part 32 along the guide member 41 at the initial time when inflating flows in is arranged in the air bag 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is folded and accommodated on the upper edge side of a window on the inside of a vehicle, and expands and expands downward from the upper edge side of the window when inflating gas flows in to expand the inside of the window. The present invention relates to a head protection airbag device provided with an airbag capable of covering the head, and more particularly to a head protection airbag device in which the airbag is guided and expanded by a guide member.

[0002]

2. Description of the Related Art Conventionally, as a head protection airbag device, there has been a structure shown in JP-A-9-249089.

This head protection airbag device is constructed by disposing a guide member for guiding the end portion of the airbag downward when the airbag folded and stored on the upper edge side of the window is deployed and inflated. It was The guide member is arranged along the center pillar portion and guides the rear end portion of the airbag downward along the center pillar portion.

However, in the head protection airbag apparatus having the above-mentioned structure, for example, when the head protection airbag apparatus is applied to an airbag which causes tension in the front-rear direction on the lower edge side at the completion of deployment and inflation, If tension is generated on the lower edge side, the lower edge of the airbag does not descend smoothly along the guide member, resulting in insufficient deployment of the airbag.

The present invention is to solve the above-mentioned problems. Even if an airbag is constructed so as to generate tension in the front-rear direction on the lower edge side at the time of completion of deployment and expansion, the airbag serves as a guide member. An object of the present invention is to provide a head protection airbag device that can be smoothly guided to complete deployment.

[0006]

A head protection airbag device according to the present invention is folded and housed on the upper edge side of a window on the inside of a vehicle, and when the inflating gas flows in, the head protection airbag apparatus is inserted from the upper edge side of the window. An airbag that can be inflated and inflated to cover the inside of the window, an inflator that supplies inflation gas to the airbag, and an inflator that is attached to the vehicle body side and guides the inflating of the airbag downward A guide member that is arranged in a vertical direction as much as possible, and an engaging portion that is arranged in the airbag, engages with the guide member, and is guided by the guide member when the airbag is expanded and inflated. In a head protection airbag apparatus configured to include the engaging portion along the guide member, the engaging portion can be moved downward along the guide member when the inflation gas initially flows into the airbag. Expansion Initial vertical chambers which is characterized by being provided.

The guide member covers the inside of the vehicle with an edge of the interior material of the vehicle that can be opened to the inside of the vehicle,
It is desirable to provide it.

In the above case, the guide member is formed of a flexible material, and when the airbag is expanded and inflated, the edge portion of the interior material is opened so that the guide member is accommodated inside the vehicle. It is desirable to dispose it so that it can be protruded to prevent interference between the airbag and the interior material.

[0009]

In the head protecting airbag apparatus according to the present invention, when the inflation gas from the inflator is introduced into the airbag, first, the initial vertical inflating portion is inflated.
With the inflation of the initial vertical inflating portion, the engaging portion is guided by the guide member to move downward, and is disposed at a predetermined airbag deployment completion position. That is, before the inflation gas flows into the other part of the airbag and the tension is generated on the lower edge side of the airbag, the engaging portion is guided in advance by the guide member to complete the deployment of the airbag. Therefore, the airbag can complete the expansion and inflation without causing any trouble, and can generate the tension in the front-rear direction on the lower edge side.

Therefore, in the head protecting airbag apparatus according to the present invention, even if the airbag is constructed so as to generate the tension in the front-rear direction on the lower edge side at the time of completion of the expansion and inflation, the airbag serves as the guide member. You can be guided smoothly to complete the deployment.

According to the second aspect of the invention, when the airbag is not deployed, the guide member is covered with an interior material such as a pillar garnish or a trim on the inside of the vehicle. The design of the vehicle equipped with the member is improved. Of course, when the airbag is deployed and inflated,
There is no possibility that the edge of the guide member covering the inside of the vehicle will be opened to the inside of the vehicle and the deployment and inflation of the airbag will be hindered.

Further, according to the third aspect of the invention, when the airbag is deployed and inflated, the flexible guide member causes the edge portion of the interior material to open so that the interior position of the interior material can be reduced. By projecting to, the airbag can be smoothly deployed and inflated without the engaging portion of the airbag interfering with the interior material.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

A head protection airbag apparatus (hereinafter abbreviated as "airbag apparatus") M1 of the first embodiment shown in FIG.
Is mounted on the double-cab vehicle V and includes an airbag 16, an inflator 37, a guide member 41, and an airbag cover 13.

The double cab vehicle V is a window SW (SW1, SW2) as a side window which is located on the side of the vehicle and is located on the side of the front and rear seats on which the occupant is seated.
And a rear wall portion 10 arranged on the rear side of the window SW2 so as to be substantially orthogonal to the window SW2. Further, the double cab vehicle V extends diagonally downward from the roof side rail portion RR on the front side of the window SW1 and is disposed substantially vertically, and the roof side rail portion between the windows SW1 and SW2. The center pillar portion CP extends downward from the RR, and the rear pillar portion RP extends downward from the roof side rail portion RR between the window SW2 and the rear wall portion 10. The window SW1 is arranged on the side of the front seat, and in the case of the embodiment, it is a window of the front door, and the window SW2 is
It is arranged on the side of the rear seat and serves as a window of the rear door in the case of the embodiment.

The pillar portions FP, CP and RP are respectively provided with synthetic resin garnishes 6, 8 and 9 so as to cover the sheet metal inner panel 2 on the vehicle body (body 1) side. . Further, also in the roof side rail portion RR, a roof head lining 7 made of synthetic resin is arranged inside the vehicle so as to cover the inner panel 2.

Further, the rear wall portion 10 is, as shown in FIG.
A rear window RW is arranged on the upper part, and a rear panel 11 made of sheet metal on the vehicle body (body 1) side and a rear trim 12 made of synthetic resin for covering the inside of the rear panel 11 are provided. The upper end side of the rear wall portion 10 is covered with a roof head lining 7 extending from the ceiling side,
The inflator 37 is covered by the lower edge 7a thereof.

In the case of the embodiment, the airbag cover 13 is composed of the front pillar garnish 6 and the roof head lining 7 and lower edges 6a and 7a. The airbag cover 13 is provided so as to cover the inside of the folded and stored airbag 16 inside the vehicle, and the airbag cover 13 shown in FIG. As indicated by the dotted line, the airbag 16 is configured to be pushed by the airbag 16 and open to the inside I of the vehicle.

As shown in FIG. 1, the airbag 16 straddles the center pillar portion CP and extends through the window SW (SW1.SW).
It is folded and stored at the upper edge of the inside of 2). As shown in FIGS. 1, 4, and 5, the airbag 16 includes an airbag body 17 capable of covering the inside of the windows SW1 and SW2, the center pillar portion CP, and the rear pillar portion RP, and an airbag body 17 A plurality of (two in the embodiment) ring portions 32, which are disposed on the rear edge 17c side and are engaged with the guide member 41, are configured.

The airbag body 17 has an extension portion 3 which will be described later.
Except for No. 1, it is formed by bag-weaving using polyamide yarn, polyester yarn, or the like. Then, the airbag body 17 receives the inflation gas G from the inflator 37.
And a non-inflow part 26 that does not allow the expansion gas G to flow in. The gas inflow part 18 expands by inflowing the vehicle interior side wall part 18a and the vehicle exterior side wall part 18b away from each other. The extending portion 31 is sewn to the front edge side of the peripheral edge joining portion 28, which will be described later.

In the embodiment, the gas inflow portion 18 includes front and rear inflow portions 21 and 22 for the front seats, and the inflation gas G discharged from the inflator 37 for the front seats.
An inflow expansion part 19 for guiding the rear seat inflow parts 21 and 22;
It consists of The front seat inflow part 21 is configured to cover the inside of the front window SW1 on the side of the front seat, and the rear seat inflow part 22 is configured to cover the interior of the rear side window SW2 on the inside of the vehicle. is there. Each of the front seat / rear seat inflow portions 21 and 22 is partitioned by a partition coupling portion 29 described later, and a plurality of vertical inflating portions 24 that inflate the inflating gas and inflate vertically in a rod shape are provided. ,It is configured. Then, the vertical inflating portion 24 arranged on the rear end side of the rear seat inflow portion 22 guides each wheel portion 32 to the guide member 41 at the beginning of inflow of the inflating gas G.
The initial vertical expansion portion 24A is configured to expand along the guide member 41 so as to be able to move downward along the guide member 41.

The inflow inflating portion 19 is located on the upper edge 17a side of the airbag body 17 so as to communicate with the upper ends of the vertical inflating portions 24 in the front and rear seat inflow portions 21 and 22.
It is arranged so as to extend in the front-rear direction. The rear end of the inflow inflating portion 19 is an inflow port portion 19 a that projects obliquely upward from the rear edge side of the airbag body 17 and is connected to the inflator 37.

The non-inflow portion 26 is formed by connecting the vehicle interior side wall portion 18a and the vehicle exterior side wall portion 18b to each other, and includes a mounting portion 27, a peripheral edge coupling portion 28, a partition coupling portion 29, a plate portion 30,
And an extension portion 31.

The peripheral connecting portion 28 is arranged around the gas inflow portion 18, including the periphery of the plate-like portion 30, in a portion in contact with the gas inflow portion 18, and is tightly woven so that gas leakage does not occur. Is made. The plurality of mounting portions 27 are arranged so as to project upward from the peripheral edge coupling portion 28 on the upper edge 17a side of the airbag body 17. A mounting bracket 34 for mounting to the inner panel 2 is fixed to each mounting portion 27, and a mounting hole 27a for inserting the mounting bolt 35 is formed. And each mounting portion 2
7 uses the mounting bolt 35 to mount the mounting bracket 34
Is fixed to the inner panel 2 on the body 1 side.

The partition connecting portion 29 extends upward from the lower edge side portion of the peripheral connecting portion 28 to the inflow inflating portion 19 in the region of the front seat / rear seat inflow portions 21 and 22 for the front seat.・
The rear seat inflow portions 21 and 22 are divided into a plurality of vertical inflating portions 24, and a plurality of them are arranged in order to make the thicknesses substantially equal.
The partition connecting portion 29 arranged on the rear end side, that is, the partition connecting portion 29A arranged adjacent to the front side of the initial vertical expansion portion 24A, has an upper end 29a as shown in FIG.
Is arranged above the upper ends of the other compartment coupling parts 29, and the expansion gas G discharged from the inflator 37.
Is easily configured to flow into the initial vertical expansion portion 24A.

The plate-like portion 30 and the extending portion 31 ensure the overall shape of the airbag body 17, and the gas inflow portion 1
It is arranged to reduce the volume of 8 and shorten the time until the completion of expansion and expansion. The plate-shaped portion 30 has a substantially rectangular shape and is arranged below the inflow expansion portion 19 between the front seat inflow portion 21 and the rear seat inflow portion 22. Further, the peripheral edge coupling portion 28 is also disposed between the gas inflow portion 18 (front seat / rear seat inflow portions 21, 22 / inflow inflating portion 19) around the plate-shaped portion 30.

The extending portion 31 has a substantially triangular plate shape extending forward from the front end side of the front seat inflow portion 21, and has a tip 31a,
It is attached and fixed to the inner panel 2 on the body 1 side on the lower side of the front pillar portion FP. That is, the extending portion 31 serves as a portion for fixing the front end 17d side, which is one end in the front-rear direction of the airbag body 17, to the front pillar portion FP as a vertical edge arranged substantially vertically in the peripheral edge of the window SW1. . The distal end 31a of the extended portion 31 is configured to include a mounting hole 31b into which the mounting bolt 35 is inserted, the mounting bracket 34 is fixed, and the mounting bolt 35 is used to fix the inner panel below the front pillar portion FP. It is fixed at 2. In the embodiment, the extension portion 31
Is formed of a woven fabric using polyamide yarn, polyester yarn, or the like, separately from the airbag body 17, and is sewn to the front edge side of the peripheral edge joining portion 28. Of course, the extension portion 31 is
It may be integrally formed with the airbag body 17 by means of a hollow weave.

Each wheel portion 32 is engaged with the guide member 41 to form an engaging portion which is guided by the guide member 41 when the airbag 16 is deployed and inflated. In the embodiment, it is separate from the airbag body 17. The body is formed into a cylindrical shape from a woven fabric using polyamide yarn, polyester yarn, etc.
8 Sewn on the trailing edge side. The ring portion 32 is 2 in the vertical direction.
Each of them is arranged so as to project rearward, and is opened in the vertical direction so that a main body portion 41a of the guide member 41, which will be described later, can be inserted therethrough.

As shown in FIG. 1, the inflator 37 is of a cylinder type having a substantially columnar shape, and the inflow port 19a of the inflow inflating portion 19 of the airbag body 17 is externally mounted, and the clamp 40 is used to make the airbag body. It is connected to 17. Then, the inflator 37 utilizes the mounting bracket 38 and the mounting bolt 39 to arrange the body 1 on the upper edge side of the rear window RW of the rear wall portion 10.
The inside of the vehicle is covered with the lower edge 7a of the roof head lining 7 and fixedly attached to the rear panel 11 on the side.

The guide member 41 is made of a flexible metal wire rod, and as shown in FIGS. 2 and 3, on the rear end side of the rear pillar portion RP, the air when the expansion and expansion of the rear pillar garnish 9 is completed is completed. At the rear edge 17a of the bag 16 on the rear edge side, which extends vertically, the inside 9
Are arranged so as to be covered. The body 1 side of the rear pillar portion RP is configured by arranging an inner panel 2 and an outer panel 3 as shown in FIGS. The guide member 41 includes a main body portion 41a which is vertically arranged by engaging the ring portion 32 so that the wheel portion 32 can be moved downward, and mounting portions 41b which are arranged at upper and lower ends of the main body portion 41a. 41
c is provided. Then, the guide member 41
Is fixed to the inner panel 2 on the body 1 side by fixing the mounting portions 41b and 41c with bolts 42. When the airbag 16 is deployed and inflated, the body portion 41a is pulled toward the vehicle interior I by the moving wheel portion 32. Then, as shown by the alternate long and two short dashes line in FIGS.

In the case of the embodiment, the upper mounting portion 4
1b is fixed to the inner panel 2 on the upper side of the airbag 16 that is folded and stored, and the mounting portion 41c on the lower side.
Is fixed to the inner panel 2 near the lower edge 17b of the airbag 16 when the expansion and inflation are completed.

As shown in FIG. 2, a hinge portion 9b is formed in the vicinity of the front side of the edge portion 9a of the rear pillar garnish 9 so that the guide member 41 projecting toward the inside I of the vehicle when the airbag 16 is deployed and inflated. It is configured so that it can be opened to the inside I of the vehicle by being pushed by the main body portion 41a. The member denoted by reference numeral 44 in FIG. 2 is a glass run. Also, the main body 4
1a is set to have a length dimension that allows the airbag 16 to project to the inside I of the vehicle in a bent state in a state where the airbag 16 is substantially inflated. Then, the airbag main body 17 is held in the main body portion 41a of the guide member 41 with its rear end 17c side being restricted from moving to the front side in a state where the inflation is substantially completed.

The mounting of the airbag apparatus M1 of the first embodiment on the vehicle V will be described. First, the airbag 16 is folded. The airbag 16 is provided with a large number of folds along the front-rear direction so that the lower edge 17b side of the airbag body 17 approaches the upper edge 17a side from the flattened state except for the site of the inflow port portion 19a. C (see the chain double-dashed line in FIG. 4) is attached and the bellows is folded. Then, a predetermined portion of the folded airbag 16 is appropriately wrapped with a breakable tape material (not shown) for preventing folding.

After that, the mounting bracket 34 is fixed to the tip 31a of each mounting portion 27 and the extending portion 31, and the inlet portion 1
9a, using the clamp 40, the inflator 37
To connect. Then, the mounting bracket 38 is attached to the inflator 37, and the inflator 37 is assembled to the airbag 16 to form an airbag assembly.

After that, the tip 31a of each mounting portion 27 and the extended portion 31 is attached to the inner panel 2 by using the mounting bolt 35.
If the mounting bracket 38 is mounted and fixed to the rear panel 11 using the mounting bolts 39,
The airbag assembly can be attached to the body 1 of the vehicle V.

Then, the main body portion 41a is inserted through each wheel portion 32, and the mounting portions 41b and 41c are attached to the bolts 52 at predetermined portions of the inner panel 2 arranged at the portion of the rear pillar portion RP.
Then, the guide member 41 is fixed.

Next, a lead wire (not shown) extending from the inflator 37 is connected to a predetermined airbag operating circuit, and at the front pillar portion FP, the front pillar garnish 6 is attached and fixed to the inner panel 2.
At the roof side rail portion RR, the roof head lining 7 is attached and fixed to the inner panel 2, and further, the center pillar portion CP and the rear pillar portion RP have garnishes 8 and 9.
If is fixed to the inner panel 2 of the body 1, the airbag device M1 can be mounted on the vehicle V.

After that, when the inflator 37 is operated, the expansion gas G flows from the inflow port 19a into the inflow expansion part 1
The tape material (not shown) is broken by flowing into the inside. The inflating gas G is introduced into the front seat / rear seat inflow portion 21.2.
2, the front pillar garnish 6 as the airbag cover 13 and the lower edges 6a, 7a of the roof head lining 7 are pushed open, and as shown by the chain double-dashed line in FIG. 1 and FIG. 16 are windows SW1 and SW2
The center pillar portion CP and the rear pillar portion RP are deployed and inflated so as to cover the inside of the vehicle. The airbag 16 has an inner panel 2 in which the front end 17d side is located at a portion of the front pillar portion FP in a state where the inflation is substantially completed.
The rear end 17c side of the guide member 41 is fixed to the main body portion 41a of the guide member 41 and its forward movement is restricted and held. A large number of vertical inflatable portions 24 are arranged in the airbag body 17,
Each vertical inflatable part 24 reduces the length in the front-rear direction,
The airbag 16 that has substantially completed the inflation because it is inflated
Tension is generated along the front-rear direction of the vehicle V on the lower edge 17b side. In addition, when the airbag 16 is substantially inflated, the body portion 41a of the guide member 41 is
Is contracted in the front-back direction of each vertical expansion part 24,
As indicated by the chain double-dashed line in FIG. 2, the vehicle slightly bends toward the front side of the vehicle.

At this time, the airbag apparatus M1 of the embodiment
Then, when the inflation gas G from the inflator 37 flows into the airbag 16, first, the initial vertical inflatable portion 24A inflates, so that as the initial vertical inflatable portion 24A inflates, a ring as an engaging portion is formed. The portion 32 is guided by the main body portion 41a of the guide member 41 to move downward, and is arranged at the predetermined deployment completion position of the airbag 16. That is, before the inflation gas G flows into the other vertical inflating portion 24 of the airbag 16 and tension is generated on the lower edge side of the airbag 16, the ring portion 32 is guided to the main body portion 41 a of the guide member 41 in advance. Thus, the deployment of the airbag 16 is brought to a substantially completed state, so that the airbag 16 can complete the deployment and inflation without any trouble, and can generate the tension in the front-rear direction on the lower edge 17b side.

Therefore, in the airbag apparatus M1 of the embodiment, even if the airbag 16 is constructed so as to generate the tension in the front-rear direction on the lower edge 17b side at the time of completion of the expansion and inflation, the airbag 16 does not function as a guide member. The deployment can be completed by being smoothly guided by 41.

Next, an airbag device M2 which is a second embodiment of the present invention will be described. In the airbag device M2, as shown in FIG. 7, the inflator 37 is arranged above the center pillar portion CP, and an airbag 46 is provided.
The configuration is the same as that of the airbag device M1 of the above-described first embodiment except that the shape is changed, and the same reference numerals are given and description thereof is omitted.

As shown in FIGS. 6 and 7, the airbag 46 is capable of covering the windows SW1 and SW2, the center pillar portion CP and the rear pillar portion RP with the inside of the vehicle.
7 and a ring portion 32 as an engaging portion that is disposed on the rear end 47c side of the airbag body 47 and that engages with the guide member 41.
And an inner tube 50 disposed inside the airbag body 47. The airbag main body 47 has the same configuration as the airbag main body 17 in the airbag device M1 of the first embodiment except for the inflow inflating section 49, and the same reference numerals are given and description thereof is omitted.

Inflow inflating section 49 of airbag 46
Similarly to the inflow inflating portion 19 of the airbag 16 of the first embodiment, the air bag body 47 of the airbag body 47 is connected to the upper ends of the vertical inflating portions 24 of the front seat / rear seat inflow portions 21 and 22. It is located on the side of the upper edge 47a and is arranged so as to extend in the front-rear direction. Then, as shown in FIG. 7, the inflow expansion section 49 has an inflow port section 49a projecting vertically upward above the vertical expansion section 24 arranged on the rear end side of the front seat inflow section 21. Is configured.

The partition connecting portion 29 disposed adjacent to the initial vertical inflating portion 24A disposed on the rear end 47c side of the airbag body 47 has its upper end substantially the same as the upper ends of the other partition connecting portions 29. It is formed so as to be located at. further,
In the second embodiment, the ring portions 32 are arranged at three positions on the rear end 47c side of the airbag body 47 along the vertical direction.

The inner tube 50 is arranged in the inflow expansion section 49 so that the expansion gas G discharged from the inflator 37 flows into the front seat inflow section 21 side and the rear seat inflow section 22 side. It is said that. Inner tube 50
Is formed of a woven fabric using polyamide yarn, polyester yarn, etc.
9a, a substantially cylindrical mounting portion 51 that is externally mounted on the inflator 37, and a substantially cylindrical main body that communicates with the mounting portion 51 and that is disposed substantially orthogonal to the mounting portion 51 and has openings at both ends. And a section 52. Then, as shown in FIG. 8, the main body portion 52 is formed so that the inner diameter dimension d1 of the opening portion 52a arranged on the front side is smaller than the inner diameter dimension d2 of the opening portion 52b arranged on the rear side. The inflating gas G discharged from the inflator 37 is easily introduced into the initial vertical inflating portion 24A arranged on the rear end 47c side of the airbag body 47.

The airbag 46 having the above structure can be folded in the same manner as the airbag 16 of the first embodiment, with the inner tube 50 inserted in the airbag body 47. Then, the inflator 37 is attached and fixed to the inner panel 2 above the center pillar portion CP, and the folded airbag 46 is mounted on the vehicle V in the same manner as in the first embodiment. Can be mounted on.

Even in the airbag apparatus M2 using the airbag 46 having the above-described structure, when the inflation gas G from the inflator 37 flows into the airbag 46, first, the initial vertical inflating section 24A inflates. Vertical expansion part 24A
As a result of the expansion, the wheel portion 32 as an engaging portion is guided by the main body portion 41a of the guide member 41 to move downward, and is arranged at a predetermined deployment completion position of the airbag 46. That is, before the inflation gas G flows into the other vertical inflating portion 24 of the airbag 46 and tension is generated on the lower edge 47b side of the airbag 46, the ring portion 32 is previously formed.
Is guided by the main body portion 41a of the guide member 41 to bring the deployment of the airbag 46 to a substantially completed state, so that the airbag 46 completes the deployment and inflation without any trouble, and the lower edge 4
Tension in the front-back direction can be generated on the 7b side.

Next, an airbag device M3 which is a third embodiment of the present invention will be described. As shown in FIGS. 10 and 12, this airbag device M3 has the same configuration as that of the airbag device M1 of the above-described first embodiment except for the airbag 56, and the description will be given with the same reference numerals. Is omitted.

The airbag 56 used in the airbag device M3 of the third embodiment, as shown in FIGS.
The structure is the same as that of the airbag 16 in the first embodiment described above, except that the rear seat inflow portion 22 has an extending portion 58 that is disposed so as to project rearward from the rear end side of the rear seat inflow portion 22. The reference numerals are given and the description is omitted.

The extending portion 58 has a substantially triangular plate shape extending rearward from the rear end side of the rear seat inflow portion 22, and has a tip 58a,
It is attached and fixed to the rear panel 11 on the body 1 side on the upper side of the rear window RW. Tip 5 of extension 58
8a is configured to include a mounting hole 58b into which the mounting bolt 35 is inserted, the mounting bracket 34 is fixed, and the mounting bolt 35 is used to fix the mounting bracket 35 to the rear panel 11 on the upper side of the rear window RW.

In the third embodiment, the portion 58c of the extended portion 58 near the initial vertical inflating portion 24A is engaged with the main body portion 41a of the guide member 41, and the airbag 5
6 is an engaging portion that is guided by the main body portion 41a during expansion and expansion. That is, in the third embodiment, the main body portion 41a of the guide member 41 is disposed on the vehicle interior side I of the extension portion 58, and when the airbag 56 is deployed and inflated,
The portion 58c near the initial vertical inflatable portion 24A moves downward along the main body portion 41a as the initial vertical inflatable portion 24A expands.

In the airbag 56 of the third embodiment, the front end 56d side is fixed to the inner panel 2 arranged at the portion of the front pillar portion FP, and the rear end 56c side is the rear window in a state where the inflation is substantially completed. The airbag 56 is configured to be fixed to the rear panel 11 arranged above the RW.
Is substantially inflated, the guide member 4 is attached to the inside I of the engaging portion 58c near the rear end of the initial vertical inflating portion 24A.
The main body portion 41a of No. 1 is arranged, and the engaging portion 58c is restricted from moving forward and held by the main body portion 41a. Therefore, on the lower edge 56b side of the airbag 56 that has substantially completed the inflation,
Tension is generated along the front-rear direction of the vehicle V from the front end 56d side to the guide member 41. Also,
When the airbag 56 is substantially inflated, the body portion 41a of the guide member 41 is contracted in the front-rear direction of each vertical inflatable portion 24, as in the first embodiment.
As shown in FIG. 13, it slightly bends toward the front side of the vehicle.

The airbag 56 having the above structure can be folded in the same manner as the airbag 16 of the first embodiment, and the folded airbag 56 can be folded as in the first embodiment.
If mounted on the vehicle V, the airbag device M3 can be mounted on the vehicle V. The guide member 41 is arranged inside the folded airbag 56 inside the vehicle, as shown in FIG. 11.

Even in the airbag device M3 using the airbag 56 having the above structure, when the inflation gas G from the inflator 37 flows into the airbag 56, first, the initial vertical inflating portion 24A inflates. Vertical expansion part 24A
Along with the expansion, the portion 58c (engagement portion) of the extended portion 58 arranged in the vicinity of the initial vertical inflating portion 24A is guided by the main body portion 41a of the guide member 41 to move downward, and the predetermined airbag 56. Will be placed at the deployment completion position. That is, before the inflation gas G flows into the other vertical inflating portion 24 of the airbag 56 and tension is generated on the lower edge side of the airbag 56, the engaging portion 58c is previously attached to the main body portion 41a of the guide member 41. By being guided, the deployment of the airbag 56 is brought to a substantially completed state, so that the airbag 56 completes the deployment and inflation as shown in FIG. 14 to generate tension in the front-rear direction on the lower edge side. be able to.

In the airbag devices M1 to M3, the guide member 41 is covered by the edge portion of the rear pillar garnish 9 when the airbags 16, 46 and 56 are not deployed. The design of the mounted vehicle V is improved. And the airbag 16,46.
At the time of deploying and inflating 56, the edge 9a covering the vehicle interior I of the guide member 41 opens to the vehicle interior I, so that there is no risk of inhibiting the deployment and inflation of the airbags 16, 46, 56. If this point is not taken into consideration, the interior of the guide member 41 may not be covered with the interior material, but may be disposed so as to be exposed to the interior of the vehicle. Further, the interior material that covers the vehicle interior I of the guide member 41 is not limited to the pillar garnish, and for example, the vehicle interior I of the guide member 41 may be covered with a trim or the like.

Further, the airbag devices M1 to M according to the embodiment.
In 3, the guide member 41 is formed of a flexible material, and the guide member 41 opens the edge portion 9a of the rear pillar garnish 9 when the airbags 16, 46, and 56 are deployed and inflated, so that the guide member 41 is stored at the storage position. Since it is configured to project from the inside to the vehicle inner side I, the engaging portions 32, 58 of the airbags 16, 46, 56
It is possible to smoothly deploy and inflate the airbags 16, 46, 56 without causing c to interfere with the rear pillar garnish 9. If this point is not taken into consideration, the guide member may be made of a rigid rod-shaped member or the like.

Further, in the embodiment, the airbag device M
Although 1 to M3 are mounted on the double cab vehicle V, the airbag device of the present invention is not limited to the double cab vehicle V, and may be mounted on a single cab vehicle or a sedan type vehicle. .

Further, in the embodiment, the guide member 41 is
The airbag 16 is placed at the rear pillar portion RP.
The rear end 17c of the rear seat inflow portion 22 at 46/56
Although the engaging portions 32 and 58c are arranged on the 47c and 56c sides, the arrangement positions of the guide member and the engaging portions are not limited to this. For example, the guide member may be arranged at the center pillar portion CP, and the engaging portion may be arranged between the front seat inflow portion and the rear seat inflow portion of the airbag. The inside of the vehicle may be covered with a center pillar garnish provided with a breakable portion that can be broken due to the protrusion of the guide member during expansion and expansion.

[Brief description of drawings]

FIG. 1 is a schematic front view showing a usage state of a head protection airbag apparatus according to an embodiment of the present invention as viewed from the inside of a vehicle.

FIG. 2 is a schematic enlarged cross-sectional view of a II-II portion of FIG.

FIG. 3 is a schematic enlarged cross-sectional view of a III-III portion of FIG.

FIG. 4 is a front view showing a state in which the airbag used in the same embodiment is flatly deployed.

5 is a partially enlarged cross-sectional view showing a state where the airbag of the same embodiment is inflated by itself, and shows a state where the VV portion of FIG. 4 is inflated.

FIG. 6 is a schematic perspective view showing a state where the airbag is deployed and inflated in the head protection airbag device of the same embodiment.

FIG. 7 is a schematic front view showing the usage state of the head protection airbag device according to the second embodiment of the present invention as seen from the inside of the vehicle.

FIG. 8 is a front view showing a state in which the airbag used in the same embodiment is flatly deployed.

FIG. 9 is an enlarged view of a portion where an inflator is arranged in the head protection airbag apparatus of the same embodiment.

FIG. 10 is a schematic front view showing a usage state of the head protection airbag apparatus according to the third embodiment of the present invention as seen from the inside of the vehicle.

11 is a schematic enlarged cross-sectional view of the XI-XI portion of FIG.

FIG. 12 is a front view showing a state in which the airbag used in the same embodiment is flatly deployed.

FIG. 13 is a schematic perspective view showing a state where the airbag is deployed and inflated in the head protection airbag device of the same embodiment.

14 is a schematic enlarged cross-sectional view of the XIV-XIV portion of FIG.

[Explanation of symbols]

1 ... body, 2 ... Inner panel, 9 ... Rear pillar garnish, 9a ... edge, 16, 46, 56 ... Airbags, 24A ... initial vertical expansion section, 32 ... Wheel part (engagement part), 37 ... Inflator, 41 ... Guide member, 41a ... main body, 58 ... extension part, 58c ... engaging portion, SP ... storage position, SW (SW1, SW2) ... window, V ... Double cab car, M1, M2, M3 ... Head protection airbag device.

Continued front page    (72) Inventor Chiharu Toya             Aichi Prefecture Kasuga-cho, Nishikasugai-gun Ochiai character Nagahata 1             Address within Toyoda Gosei Co., Ltd. F-term (reference) 3D054 AA07 AA20 CC04 CC11 DD14

Claims (3)

[Claims] 1. The vehicle is folded and stored on the upper edge side of the window inside the vehicle, and when the expansion gas flows in, the vehicle is inflated and expanded downward from the upper edge side of the window to cover the inner side of the window. An airbag, an inflator that supplies inflation gas to the airbag, a guide member that is attached to the vehicle body, and is vertically arranged to guide downward deployment of the airbag, and the airbag A head protection airbag device, comprising: an engaging portion that is disposed in the guide member and that is engaged with the guide member and is guided by the guide member when the airbag is deployed and inflated. At the beginning of the inflow of the inflation gas, an initial vertical inflating portion that inflates along the guide member is provided so that the engaging portion can move downward along the guide member. Tosu Head protection air bag device. 2. The head according to claim 1, wherein the guide member is arranged such that the inside of the vehicle is covered with an edge portion of the interior material of the vehicle that can be opened to the inside of the vehicle. Protective airbag device. 3. The guide member is flexible, and when the airbag is deployed and inflated, the edge portion of the interior material is opened so that the guide member protrudes from the storage position of the guide member to the inside of the vehicle.
The head protection airbag apparatus according to claim 2, wherein the airbag is arranged so as to prevent interference between the airbag and the interior material.