JP2002362295A - Head protecting air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a head protecting air bag device capable of arranging its air bag smoothly between an occupant and a window even if he is seated in proximity to the window. SOLUTION: The head protecting air bag device is equipped with the air bag 20F and a pressing device 31. The pressing device 31 is installed around the window WF and can press the occupant MF seated near the window WF to the cabin interior side I. The air bag 20F is accommodated at the upper rim UW of the vehicle window WF and developed and inflated in such a way as covering the cabin interior side I of the window WF so as to restrain the head MH of the occupant MF when the inflating gas flows in from the inflator at the time of actuation. The development and inflation of the air bag 20F are made between the occupant MF pressed by the pressing device 31 and the window WF.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle which is housed at the upper edge of a window of a vehicle and covers the inside of the window to restrain an occupant's head when inflation gas flows from an inflator during operation. The present invention relates to a head protection airbag device configured to include an airbag that can be deployed and inflated.

[0002]

2. Description of the Related Art In a conventional head protection airbag device, an airbag is folded inside the vehicle at the upper edge side of a window of the vehicle, as disclosed in Japanese Patent Application Laid-Open No. 2000-332225. When the inflation gas from the inflator at the time of operation flows in, the airbag is
The head of the occupant could be restrained and deployed downward from the upper edge of the window to cover the inside of the window.

However, when the airbag is deployed and inflated while the occupant is approaching the window, for example, leaning on the periphery of the window, the airbag is moved between the occupant and the window. , It may not be arranged smoothly and may be deployed inside the occupant's vehicle.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and provides a head protection airbag apparatus capable of smoothly disposing an airbag between an occupant and a window even when the occupant is approaching the window. The purpose is to provide.

[0005]

In the head protection airbag device according to the present invention, the airbag is housed in the upper edge of a window of a vehicle and is supplied to the window when inflation gas flows from the inflator during operation. An airbag that covers the inside of the vehicle and expands and inflates so that the head of the occupant can be restrained, wherein the airbag device can press an occupant approaching the window toward the inside of the vehicle. A pressing device is disposed around the window, and the airbag is disposed between the pressed occupant and the window so as to be deployed and inflated.

It is preferable that the pressing device is provided with a pressing member which protrudes in an inward direction of the vehicle substantially perpendicular to the window and can press an occupant approaching the window in operation.

[0007] The pressing device can be disposed at a lower edge side portion of the periphery of the window inside the vehicle, or can be disposed on a seat on which the occupant sits.

[0008]

In the head protection airbag apparatus according to the present invention, even if the occupant approaches the window by leaning on the periphery of the window, the occupant approaching the window can be operated by the pressing device. Can be pressed in the direction of the vehicle interior away from the window to move the occupant away from the window. Then, when the airbag is activated, the airbag is smoothly deployed and inflated between the occupant separated from the window and the window, and the head of the occupant can be restrained.

Therefore, in the head protection airbag device according to the present invention, the airbag can be smoothly disposed between the occupant and the window even when the occupant is approaching the window.

[0010] When the pressing device is provided with a pressing member which protrudes in a vehicle inward direction substantially perpendicular to the window and is capable of pressing an occupant approaching the window, when the pressing device is configured, the pressing device is provided by the pressing member. Therefore, the occupant approaching the window can be accurately pushed out toward the inside of the vehicle.

Further, if the pressing device is arranged at the lower edge side portion of the periphery of the window on the inside of the vehicle, even if the pressing device is actuated, it does not easily interfere with the airbag covering the window, and the airbag can smoothly move. It can cover the inside of the car from the window.

Further, if the pressing device is disposed on the seat on which the occupant sits, the occupant can be accurately pressed away from the window even if the seat is adjusted in the longitudinal direction of the vehicle.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

The head protection airbag device S of the first embodiment
1 is an airbag 20 (20F / 20R) capable of covering the inside I of a window W (WF / WR) as shown in FIGS.
And an inflator 27 capable of supplying an inflation gas to the airbag 20 and a pressing device 31 capable of pressing the occupant M (MF / MR) against the vehicle interior I.

The airbag 20 is composed of two front and rear airbags 20F and 20R so as to cover the window WF of the front door FD and the window WR of the rear door RD. Each of the airbags 20F and 20R has a substantially rectangular plate shape as a bag shape in which inflation gas from one inflator 27 flows and inflates. Airbag 20F ・ 2
Each of the ORs is provided with a main body part 21 that inflates the inflating gas by flowing the inflating gas, and a cylindrical gas inflow part 22 that causes the inflating gas to flow into the main body part 21. In the airbag 20F, the gas inflow portion 22 is disposed at an upper rear end of the main body 21. In the airbag 20R, the gas inflow portion 22 is disposed at an upper front end of the main body 21.
Is connected to At the upper end side of each airbag 20F / 20R, a plurality of mounting portions 2 fixed to the inner panel 2 on the body (vehicle) 1 side of the roof side rail portion RR.
3 are provided. As shown in FIG. 2, a mounting bracket 24 is fixed to each mounting portion 23, and each mounting portion 23 is attached to the inner panel 2 by a bolt 25 together with the mounting bracket 24.
It has been stopped. Note that a member denoted by reference numeral 3 shown in FIG. 2 is an outer panel on the body 1 side.

Each of the airbags 20F and 20R is
Only the upper end 21a side of the main body 21 at the time of deployment and inflation is fixed to the inner panel 2 by using each mounting portion 23, and the lower end 21b side of the main body at the time of expansion and inflation is a free end, and the window WF is used as a free end. -It is provided so as to be swingable in the vehicle interior I direction and the vehicle exterior O direction in a direction substantially perpendicular to the WR.

The airbags 20F and 20R are folded in a bellows form from the lower end 21b to the upper end 21a.
The roof side rail portion RR corresponding to the upper edge portion UW of the periphery of the windows WF and WR is covered and stored by the roof head lining 5 inside the vehicle. The roof head lining 5 is made of a synthetic resin, and a door portion 5a that can be opened to the vehicle interior I is disposed at a lower edge thereof. When the airbags 20F and 20R are deployed and inflated, the airbags 20F and 20R are arranged so as to push open the door portion 5a, protrude downward, and cover the inside I of the windows WF and WR.

At the time of deployment and inflation, the airbag 20F
The airbag 20R covers the rear inner side of the window WF, the upper side of the inner side of the center pillar portion CP, and the inner side of the front side of the window WR of the rear door RD. The airbag 20R includes the rear inner side of the window WR and the rear pillar portion. This will cover the inside of the RP.

The inflator 27 is of a cylinder type and of a dual type capable of discharging inflation gas from both front and rear ends. The dual type is mounted on the inner panel 2 of the roof side rail portion RR while being held by a mounting bracket 28.
It is mounted using mounting bolts 29.

In the case of the first embodiment, the pressing device 31 is disposed on the inner side I of the lower edge side portion DW of the periphery of the window WF / WR of each door FD / RD, and each of the pressing members 32
And a drive source 36 for operating the pressing member 32. When the pressing member 32 is operated, the window WF
The window WF / W protrudes in the direction I inside the vehicle, which is substantially perpendicular to the WR.
Interfering with the crew MF / MR approaching R, the crew MF / MR
The MR is pressed against the inside I of the vehicle.

In the case of the first embodiment, each pressing member 32
The driving source 3 includes an airbag 33 and a pad 34.
6 is provided with an inflator 37.

Each of the airbags 33 is formed into a substantially cylindrical bag shape whose axis is arranged in the front-rear direction of the vehicle when the deployment and inflation is completed, and the inside of the window edge garnish 7 at the lower edge side portion DW of the windows WF and WR. The garnish 7 is provided with a pad 34 that is closed and closed, and covers the opening 7a provided in the vehicle interior I of the garnish 7 and is fixed to the surface of the vehicle interior I. When the pad 34 interferes with the occupant M (MF / MR), the occupant M
Since the F / MR is pressed against the inside I, the occupant MF / M
As in the case of the garnish 7, the base 34a made of a soft synthetic resin made of a thermoplastic elastomer such as an olefin or polyurethane or the like, and the lower edge side part DW are not deteriorated so as to reduce the impact force to R. And a skin 34b covering the surface of the base 34a.

A supply pipe 38 extending rearward from the inflator 37 is provided in each airbag 33. A plurality of supply ports 38a arranged in the supply pipe 38 along the axial direction of the pipe 38 are opened,
The supply pipe 38 allows the inflation gas from the inflator 37 to flow into the airbag 33 from each supply port 38a,
The airbag 33 is configured to be inflated and protrude toward the inside I of the vehicle.

Each of the inflators 37 is a cylinder type, and uses a mounting bracket 39 to form a door FD / F.
It is fixed to a predetermined frame of R (illustration omitted).

The operation of the inflator 37 of each pressing device 31 and the inflator 27 for inflating the airbags 20F and 20R is controlled by the control device 16,
When the side collision detection signal at the time of the side collision of the vehicle from the side collision sensor 18 is input, the control device 16
・ 27 will be activated. Further, in the case of the embodiment, the control device 16 is configured to operate the inflator 37 of each pressing device 31 first, and to operate the inflator 27 after a delay of 5 to 10 ms.
Note that the control device 16 and the side collision sensor 18 are arranged at predetermined positions of the vehicle.

The airbag 33 completes the deployment and inflation within 10 to 15 ms after the start of operation of the inflator 37, and the airbags 20F and 20R within about 20 ms after the start of operation of the inflator 27. It is configured to complete the deployment and inflation.

Further, when the deployment of the airbag 33 is completed, the amount of protrusion L of the pressing member 32 toward the inside I of the vehicle is determined by the upper edge UW of the window WF / WR.
If the occupant MF / MR is located in a region where the occupant MF / MR is located in a region that expands and inflates downward from the vehicle, the occupant MF / MR can be pushed out to the inside I of the vehicle so that the occupant MF / MR comes off the inside I of the region. In the expansion and expansion area of 20F / 20,
If the crew MF / MB is not located, the crew MF / MB
Is set so as not to interfere with

The head protection airbag device S of the first embodiment
First, the mounting of the pad 34 on the vehicle will be described.
The supply pipes 38 connected to the inflator 37 are fastened to the airbags 33 to which the airbags 33 are fixed, respectively, while securing the sealing properties, the airbags 33 are folded, and the pressing devices 31 are assembled. . When assembling the doors FD / RD, the pressing devices 31
If you attach each door FD / RD to the vehicle,
Each pressing device 31 can be mounted on a vehicle.

The mounting of the airbags 20F and 20R on a vehicle will be described.
Are folded to the upper end 21a side, and the airbags 20F and 20R are wrapped with a breakable tape material (not shown) so as not to be broken. Then, each airbag 2
Attachment brackets 24 are attached to the respective attachment portions 23 of the OF and 20R, and the respective gas inflow portions 22 are connected to the inflator 27, and the attachment brackets 28 are attached to the inflator 27 to form an airbag assembly. . After that, the mounting brackets 24 and 28 are fixed to the inner panel 2 by bolts 25 and 29, and the roof head lining 5 is mounted on the inner panel 2, so that the airbags 20F and 20R and the inflator 27 can be mounted on the vehicle. it can. Then, if each of the pressing devices 31, the airbags 20F and 20R, and the inflator 27 are attached to the vehicle, the head protection airbag device S1 can be mounted on the vehicle.

The control device 16 and the side collision sensor 18 are separately mounted at predetermined positions on the vehicle, and extend from the inflator 37 or the inflator 27 when the head protection airbag device S1 is mounted on the vehicle. The lead wires will be connected to the control device 16.

After the head protection airbag device S1 is mounted on the vehicle, the control device 16 inputs a side collision detection signal from the side collision sensor 18 at the time of a side collision of the vehicle. Inflator 37 as source 36
Activate Then, the inflator 37 discharges the inflation gas, so that the inflation gas is supplied to each supply pipe 3.
8, the air flows into the airbags 33 as the pressing members 32 from the respective supply ports 38a, and the respective airbags 33 are deployed while projecting the pads 34 into the vehicle interior I as shown by the two-dot chain line in FIG. Swell.

The controller 16 controls the inflator 3
5 to 10 ms after the start of the operation of the inflator 2,
Activate 7 Therefore, each airbag 20F ・ 20
R applies inflation gas from the inflator 27 to the main body 21.
And expands, breaks the tape material (not shown), pushes the door portion 5a of the roof head lining 5 open, and as shown by the two-dot chain line in FIG. It will expand and expand downward so as to shield.

Immediately before the operation of the head protection airbag device S1, for example, as shown in FIG.
However, even if the pressing device 31 is actuated even when approaching the window WF by leaning against the periphery of the window WF, the airbag 33 as the pressing member 32 is inflated as shown in FIG. The pad 34 projects in the vehicle interior I direction, interferes with the occupant MF approaching the window WF, and presses the vicinity of the shoulder MS of the occupant MF in the vehicle interior I direction away from the window WF, thereby causing the occupant MF to move. It can be separated from the window WF. Therefore, if the airbag 20F is operated so as to expand and inflate after the operation of the pressing device 31, as shown in FIG.
0F is between the window WF and the occupant MF away from the window WF.
The occupant's head MH can be restrained by expanding and expanding smoothly.

Therefore, in the head protection airbag device S1 of the first embodiment, even if the occupant MF is approaching the window WF, the airbag 20F is smoothly moved between the occupant MF and the window WF.
Can be arranged. The window W on the rear door RD side
Also in R, if the occupant MR is approaching the window WR, the pressing device 31 similarly presses the occupant WR toward the vehicle interior I, and then the airbag 20R moves the occupant MR away from the window WR.
And the window WR, smoothly expand and inflate, and the occupant head MH
Can be restricted.

When the pressing device 31 operates, the window W
The window WF protrudes in the direction I on the inside of the vehicle, which is substantially orthogonal to F · WR.
-It is configured to include an airbag 33 and a pad 34 as a pressing member 32 capable of pressing the occupant MF / MR approaching the WR, and by the pressing member 32,
Passengers MF / MR approaching the window WF / WR to the inside I
Can be extruded in any direction.

In the first embodiment, the pressing device 31
Are arranged at the lower edge side portion DW of the periphery of the window W on the inner side of the vehicle I, so that even if the pressing device 31 is actuated, it hardly interferes with the airbag 20 covering the window W.
Can smoothly cover the inside I of the window W.

The lower edge portion DW of the periphery of the window W
In addition, the pressing device 31 that presses the occupant M approaching the window W toward the inside of the vehicle is not limited to the pressing device that is disposed on the doors FD and RD. It may be arranged.

As the pressing device 31, the pad 34 that interferes with the occupant M approaching the window W only needs to be able to press and move the occupant M toward the inside I of the vehicle. Without being used, the pad 34 itself is used as the pressing member 32, and the driving force 36 for projecting the pad 34 toward the inside I of the vehicle is discharged from the inflator 37 or the urging force when the electromagnetic solenoid or the compressed spring is opened. A piston cylinder using gas or the like may be used.

Further, the pressing member 32 for pressing the occupant M against the vehicle interior I may be constituted by the airbag 33 itself without using the pad 34. In this case,
If the window edge garnish 7 is provided with a door that can be pushed open by the airbag 33 that expands and inflates or that can be opened by breaking the peripheral edge, the airbag 33 has good design.
Can be stored.

The head protection airbag device S2 according to the second embodiment shown in FIGS. 4 to 6 includes the airbag 20 and the inflator 27 according to the first embodiment.
1 is disposed on the seat 9 on which the occupant M sits.

The pressing device 41 includes a seat portion 10 and a backrest portion 11,
The airbag 43 includes an airbag 43 serving as a pressing member 42 and an inflator 47 serving as a drive source 46 for supplying inflation gas to the airbag 43.

The member indicated by reference numeral 12 shown in FIG. 5 is a frame, the member indicated by reference numeral 13 is a cushion, and the member indicated by reference numeral 14 is a skin 14.

The inflator 47 is disposed in the airbag 43, and is configured to discharge inflation gas from a gas discharge port (not shown) when activated. The inflator 47 is operated by the inflator 27 that deploys and inflates the airbag 20 as in the first embodiment.
5-10 ms, operated quickly, multiple mounting brackets 4
8, the seat 9 is fixed to the frame 12 in the backrest 11 of the seat 9.

Each mounting bracket 48 includes a substantially annular clamp 48a for holding the inflator 47, and a bolt 48b coupled to the clamp 48a and capable of being fixed to the frame 12 with a nut 49.
Is made of sheet metal and is externally mounted on the inflator 47 and caulked so as to reduce the diameter, thereby forming the inflator 4.
7 is held.

The airbag 43 has a substantially rectangular plate shape and has an inflator 47 disposed therein. The airbag 43 is provided with a hole (not shown) through which the bolt 48 b of each mounting bracket 48 is inserted, and is folded and stored in the case 50. Airbag 43
Is the inflator 4 with the mounting bracket 48 attached.
In a state in which the front end 43a is brought closer to the rear end 43b, the front end 43a is moved from the surface of the back O of the backrest portion 11 to the front side during the expansion and inflation. When it protrudes to expand the thickness dimension T in the left-right direction and protrudes in the direction I inside the vehicle,
The occupant M is pressed against the inside I of the vehicle.

The thickness T is such that the airbag 20
If the occupant M is located in a region that expands and expands downward from the upper edge side portion UW, the occupant M can be pushed out to the vehicle interior I so that the occupant M is disengaged from the region to the vehicle interior I,
When the occupant M is not located in the deployment and inflation region of the airbag 20, the occupant M is set so as not to interfere with the occupant M. The airbag 43 at the time of completion of the deployment and inflation may be configured so that the occupant M can be pushed out to the vehicle interior I without the vehicle exterior side surface 43c coming into contact with the vehicle interior side wall IW such as the door FD. In a state where the occupant M is in contact with and supported by the portion IW, the occupant M can easily be pushed out in the direction of the vehicle interior I that is substantially perpendicular to the window W when the thickness is expanded.

The case 50 includes the folded airbag 43.
The frame 1 is formed in a U-shaped cross section that covers the rear side of the vehicle.
2 is provided with a bolt 50a to be fixed to the nut 51, and is fixed to the frame 12 by the nut 51 of the bolt 50a and the nut 49 of the mounting bracket 48.

The folded airbag 43 is wrapped by a breakable wrapping material 52 for preventing breakage, and is covered by a cover 53 that can be opened to the outside O of the vehicle when mounted on the backrest 11. It will be.

The head protection airbag device S2 of the second embodiment is mounted on a vehicle by first mounting the mounting bracket 4 in the airbag 43 with a predetermined insertion hole opened.
The inflator 47 to which 8 has been fixed is inserted. The bolts 48b of each mounting bracket 48 are made to protrude out of the airbag 43 from predetermined holes. In addition, a lead wire (not shown) connected to the inflator 47 and connected to the control device 16 side is also projected from a predetermined hole.

Then, the airbag 43 is cactus-folded and wrapped with a wrapping material 52, and furthermore, each bolt 48
b, while inflating the inflator 4 in the case 50.
7 together with the airbag 43. Then, case 50
The case 50 is fixed to the frame 12 by fixing the bolts 50a and 48b to the nuts 49 and 51, and the cover 53
When the seat 9 is mounted on the backrest portion 11, the pressing device 41 can be mounted on the seat 9, and when the seat 9 is mounted on the vehicle, the pressing device 41 can be mounted on the vehicle.

The airbag 20 and the inflator 2
7 is mounted on the vehicle similarly to the first embodiment,
1. If the airbag 20 and the inflator 27 are mounted on a vehicle, the head protection airbag device S2 can be mounted on the vehicle. The control device 16 and the side collision sensor 18 are separately mounted at predetermined positions on the vehicle, and control the lead wires (not shown) extending from the inflators 47 and 27 when the head protection airbag device S2 is mounted on the vehicle. It will be connected to the device 16.

After the head protection airbag device S2 is mounted on the vehicle, the control device 16 inputs a side collision detection signal from the side collision sensor 18 at the time of side collision of the vehicle. The inflator 47 as 46 is operated. Then, since the inflator 47 discharges the inflation gas, the inflation gas inflates the airbag 43 as the pressing member 42, and the airbag 43
As shown by the two-dot chain line in FIGS. 4 and 5, the wrapping material 52 is broken, and the cover 53 is pushed open to the vehicle outside O so that the front end 43a projects toward the vehicle front side, and the thickness is further increased. It will expand like so.

The control device 16 controls the inflator 4
5 to 10 ms after the start of the operation of the inflator 2,
7, the airbag 20 is inflated by flowing the inflation gas from the inflator 27 into the main body 21 to break the tape material (not shown), as in the first embodiment. Then, as shown by the two-dot chain line in FIG. 4, the door portion 5a is expanded and inflated downward so as to cover the inside I of the window W.

Immediately before the operation of the head protection airbag device S2, for example, as shown in FIG.
Even when approaching the window W by leaning on the periphery of the window W,
When the pressing device 41 is actuated, the airbag 43 of the pressing member 42 expands and interferes with the occupant M approaching the window W, as shown in FIG. To
The occupant M can be separated from the window W by pressing in the direction of the inside I away from the window W. Therefore, if the airbag 20 is operated so as to deploy and inflate after the operation of the pressing device 41,
As shown in FIG. 6C, the airbag 20 can be smoothly deployed and inflated between the occupant M and the window W apart from the window W, and the occupant head MH can be restrained.

Therefore, also in the head protection airbag device S2 of the second embodiment, the occupant M approaching the window W and the window W
The airbag 20 can be disposed smoothly between the airbag 20 and the airbag 20.

When the pressing device 41 is operated, it protrudes so as to increase its thickness in the direction of the vehicle interior I substantially perpendicular to the window W.
An airbag 43 as a pressing member 42 capable of pressing the occupant M approaching the window W is provided, and the occupant M approaching the window W can be accurately moved by the airbag 43 to the inside of the vehicle. It can be extruded in the I direction.

Further, in the second embodiment, the pressing device 41
However, since the seat 9 is disposed on the seat 9 on which the occupant M sits, the occupant M can be accurately pressed away from the window W even if the position of the seat 9 is adjusted in the front-rear direction of the vehicle.

Further, the pressing device 41 of the second embodiment
In the head protection airbag device S2 according to the second embodiment, the airbag 43 at the time of deployment and inflation covers the vehicle exterior near the chest MB of the occupant M, similarly to the side collision airbag device. The head MH of M and the chest MB can be restrained.

The head protection airbag device S3 according to the third embodiment shown in FIGS. 7 to 9 is also the airbag 2 according to the first and second embodiments.
Although it includes the inflator 27 and the inflator 27, similarly to the second embodiment, the sheet 9 is provided with a pressing device 61 disposed thereon.

As in the second embodiment, the pressing device 61 is also provided on the backrest 11 of the seat 9, and includes a pressing member 62 and an inflator 67 as a driving source 66.
And is provided.

The pressing member 62 is composed of an airbag 63 which inflates by flowing inflation gas from the inflator 67, and a cover portion 11a which covers the folded airbag 63 and is movable together with the airbag 63. I have. The cover portion 11a is arranged near the waist portion MW of the occupant M on the front edge side near the vehicle outer side surface of the backrest portion 11,
In the case of the embodiment, it is composed of a part of the skin 14.

The airbag 63 includes a main body 63a that expands into a substantially elliptical sphere and a gas inflow portion 63b through which inflation gas flows into the main body 63a. The waist M of the occupant M on the front edge side
It is folded and stored near W. When the airbag 63 is deployed and inflated, the cover portion 11a is protruded forward, and the waist MW of the occupant M is moved obliquely forward through the window W.
It is configured to be pushed out in the vehicle interior I direction which is substantially orthogonal to.

The inflator 67 is attached to the mounting bracket 6.
8 and is fixed to the frame 12. The inflator 67 has a gas inflow portion 63 a of the airbag 63.
Are fastened by fasteners (not shown) such as clamps. As in the first and second embodiments, the inflator 67 also controls the airbag 20 by the control device 16.
The operation of the inflator 27 for expanding and inflating
It is configured to be activated as early as 10 ms.

The pressing device 61 is mounted on the vehicle by assembling the folded airbag 63 and the inflator 67 and assembling the seat 9 with the pressing device 61 when the seat 9 is assembled. Is going.

The airbag 20 and the inflator 2
7 is mounted on a vehicle similarly to the first and second embodiments, and includes a pressing device 61, an airbag 20, and an inflator 27.
Is attached to the vehicle, the head protection airbag device S3
Can be mounted on a vehicle. The control device 16 and the side collision sensor 18 are separately mounted at predetermined positions on the vehicle, and control the lead wires (not shown) extending from the inflators 67 and 27 when the head protection airbag device S3 is mounted on the vehicle. It will be connected to the device 16.

After the head protection airbag device S3 is mounted on the vehicle, the control device 16 inputs a side collision detection signal from the side collision sensor 18 at the time of a side collision of the vehicle. The inflator 67 as 66 is operated. Then, since the inflator 67 discharges the inflation gas, the inflation gas is supplied to the airbag 63 as the pressing member 62 as shown by a two-dot chain line in FIGS.
The main body 63a is inflated so that the cover 11a projects forward with the airbag 63.

The control device 16 controls the inflator 6
5 to 10 ms after the start of the operation of the inflator 2,
7, the airbag 20 is inflated by flowing the inflation gas from the inflator 27 into the main body 21 to break the tape material (not shown), as in the first and second embodiments. The door portion 5a of the lining 5 is pushed open, and as shown by a two-dot chain line in FIG.

Immediately before the operation of the head protection airbag device S3, for example, as shown in FIG.
Even when approaching the window W by leaning on the periphery of the window W,
When the pressing device 61 operates, as shown in FIG. 9B, the cover portion 11a of the pressing member 62 projects together with the airbag 63 and interferes with the occupant M approaching the window W, and the occupant M
Near the waist MW of the vehicle, the vehicle interior I diagonally forward away from the window W
The occupant M can be separated from the window W by pressing in the direction.
Therefore, if the airbag 20 is operated so as to expand and inflate after the operation of the pressing device 61, the airbag 20 moves between the occupant M and the window W away from the window W, as shown in FIG. , The occupant's head MH can be restrained.

Therefore, also in the head protection airbag device S3 of the third embodiment, the occupant M approaching the window W and the window W
The airbag 20 can be smoothly disposed between the
Further, as in the second embodiment, since the pressing device 61 is disposed on the seat 9 on which the occupant M is seated, even if the position of the seat 9 is adjusted in the front-rear direction of the vehicle, the window W can be properly adjusted.
The occupant M can be pressed away from the vehicle.

When the seat 9 is provided with a pressing device, the head protection airbag device S4 of the fourth embodiment shown in FIGS. In the fourth embodiment as well, the airbag 20 and the inflator 27 have the same configuration as the first to third embodiments.

The pressing device 71 according to the fourth embodiment includes a pressing member 72 that interferes with the occupant M, and an inflator 77 as a driving source 76 for driving the pressing member 72.

The pressing member 72 is composed of an airbag 73 which is inflated by flowing an inflation gas from an inflator 77.
As shown in FIG. 1A, from the vicinity of the upper edge of the side surface of the vehicle outside O near the front of the seat 10 of the seat 9, the backrest 11
It is arranged near the front edge of the side surface of the vehicle outside O near the upper part of the vehicle, and is covered and stored by the seat 10 and the skins 10a and 14 of the backrest 11. As shown in FIGS. 11A and 11B, the airbag 73 has a main body 73a that expands in a substantially columnar shape when inflated, mounting portions 73c and 73d arranged at both upper and lower ends thereof, and inflation gas flows into the main body 73a. And a gas inflow portion 73e. The main body portion 73a is configured such that the length is reduced and the thickness is increased when the inflation gas flows, and the occupant M is moved in the vehicle interior I direction substantially orthogonal to the window W when the inflation gas is inflated. Pressing is possible. In the case of the embodiment, the main body 73
“a” is configured by connecting a plurality of annular inflatable portions 73b that communicate with each other. The mounting portions 73c and 73d are fixed to respective frames (not shown) of the backrest 11 and the seat 10. The gas inflow portion 73e is attached to the mounting portion 7
It is arranged near 3d, and is connected to the inflator 77 using a clamp (not shown).

The inflator 77 is attached to the mounting bracket 7.
8, and is fixed to a frame (not shown) of the seat portion 10, and a cushion or skin 10 a (not shown) of the seat portion 12.
Covered in.

The inflator 77 is also configured to be operated by the control device 16 5 to 10 ms earlier than the operation of the inflator 27 for deploying and inflating the airbag 20.

The pressing device 71 is also mounted on the vehicle when the seat 9 is mounted on the vehicle in a state where the pressing device 71 is mounted on the vehicle in advance.

After the head protection airbag device S4 is mounted on the vehicle, the control device 16 inputs a side collision detection signal from the side collision sensor 18 at the time of a side collision of the vehicle. Since the inflator 77 is operated as the inflator 76 and the inflator 77 discharges the inflation gas, as shown in a two-dot chain line in FIG. 10 and FIG. The bag 73 expands thickly so that the inflatable portions 73b of the main body 73a are inflated and the skins 10a and 14 are broken and protruded, and the main body 73a connects the mounting portions 73c and 73d in a straight line. Become.

The control device 16 controls the inflator 6
5 to 10 ms after the start of the operation of the inflator 2,
7, the airbag 20 is inflated by flowing the inflation gas from the inflator 27 into the main body portion 21 to break the tape material (not shown), as in the first to third embodiments. The door portion 5a of the lining 5 is pushed open, and as shown by a two-dot chain line in FIG.

Immediately before the operation of the head protection airbag device S4 of the fourth embodiment, the occupant M approaches the window W by leaning on the periphery of the window W, for example, as shown in FIG. However, if the pressing device 71 is operated, as shown in FIG.
a protrudes from the backrest portion 12 and the seat portion 10 so as to linearly tie the vicinity of the outside of the vehicle near the upper portion of the backrest portion 12 and the vicinity of the front portion of the seat portion 10 and further expands thickly. Interfering with the occupant M approaching the window W, the occupant M
Move the vicinity of the chest MB and waist MW inside the car I away from the window W
Direction, and the occupant M can be separated from the window W. Therefore, if the airbag 20 is operated so as to be deployed and inflated after the operation of the pressing device 71, the airbag 20 moves between the occupant M and the window W away from the window W, as shown in FIG. , The occupant's head MH can be restrained.

Therefore, in the head protection airbag device S4 of the fourth embodiment, as in the second embodiment, the window W
Can be pushed out to the vehicle interior I substantially perpendicular to the window W by the airbag 73 as the pressing member 72, and the airbag 20 can be smoothly disposed. However, since the seat 9 is disposed on the seat 9 on which the occupant M sits, the occupant M can be accurately pressed away from the window W even if the position of the seat 9 is adjusted in the front-rear direction of the vehicle.

Further, since the airbag 73 when the pressing device 71 is deployed and inflated covers the vehicle outside near the waist MW and the chest MB of the occupant M, the occupant in the head protection airbag device S4 of the fourth embodiment is different from the occupant M in FIG. M head MH, chest MB, waist MW
Is also possible. In particular, the main body 7 of the airbag 73
3a fixes the mounting portions 73c and 73d at the front and rear ends in the oblique direction to the frame of the seat 9 and is difficult to move to the outside O of the vehicle, so that the occupant M can be stably restrained.

As in the case of the airbag 73 of the pressing device 71 of the fourth embodiment, the main body 73a is inflated thickly and shortly so as to protrude from the backrest portion 12 and the seat portion 10 so that the occupant M
13 and 14 may be configured as the airbags 73A and 73B in FIGS.

The airbag 73A shown in FIG.
The inflatable portions 73b are substantially spherical and connected so as to communicate with each other, and operate in the same manner as the airbag 73.

The airbag 73B shown in FIG.
a is a substantially elliptical sphere, around which a body 7
A flexible cylindrical net member 74 having an axial direction 3a as a bias direction is provided. When the net material 74 is pulled in the axial direction, the inner diameter is reduced to increase the axial length, and when the inner diameter is expanded, the inner diameter is increased and the axial length is reduced. This airbag 73
B, if the inflation gas flows into the main body 73a,
With the regulating force of the net material 74, the airbag body 73a is
The airbags 73, 73 are inflated to be thick and short columns.
It will operate in the same way as A.

In each embodiment, the pressing devices 31.4
The case where the inflator 27 is operated with a delay after 5 to 10 ms after the inflators 37, 47, 67, and 77 as the drive sources 36, 46, 66, and 76 of the 1.61, 71 are operated is described. Members 32, 42, 62
Since the airbag 20 only needs to be deployed and inflated between the occupant M and the window W after the occupant M approaches the window W from the window W, the pressing device 31.・
The time difference for operating the inflator 27 after the start of the 71 is not limited to the embodiment. And
If the airbag 20 is deployed and inflated between the occupant M and the window W after the occupant M approaching the window W is separated from the window W, for example, the pressing devices 31, 41, 61, 71 and the inflator 27 And simultaneously, or conversely, before the pressing devices 31, 41, 61, 71 are activated, the inflator 2
7 may be activated.

[Brief description of the drawings]

FIG. 1 is a front view of a head protection airbag device according to a first embodiment of the present invention as viewed from the inside of a vehicle.

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

FIG. 3 is a diagram illustrating behavior of the pressing device and the airbag according to the first embodiment.

FIG. 4 is a front view of the head protection airbag device according to the second embodiment as viewed from the inside of the vehicle.

FIG. 5 is a schematic enlarged cross-sectional view taken along a line VV in FIG. 4;

FIG. 6 is a diagram for explaining the behavior of a pressing device and an airbag according to a second embodiment.

FIG. 7 is a front view of the head protection airbag device according to the third embodiment as viewed from the inside of the vehicle.

FIG. 8 is a schematic enlarged cross-sectional view of a portion VIII-VIII in FIG. 7;

FIG. 9 is a view for explaining the behavior of the pressing device and the airbag according to the third embodiment.

FIG. 10 is a front view of a head protection airbag device according to a fourth embodiment as viewed from the inside of the vehicle.

FIG. 11 is a schematic perspective view illustrating an operation of a pressing device according to a fourth embodiment.

FIG. 12 is a view for explaining the behavior of a pressing device and an airbag according to a fourth embodiment.

FIG. 13 is a schematic perspective view showing an operation of a modification of the pressing device of the fourth embodiment.

FIG. 14 is a schematic perspective view showing the operation of still another modification of the pressing device according to the fourth embodiment.

[Explanation of symbols]

 9: Sheet, 20 (20F / 20R): Airbag, 27: Inflator, 31/41/61/71: Pressing device, 32/42/62/72: Pressing member, 36/46/66/76 (Pressing) Drive source, W (WF / WR): window, DW: lower edge portion, UW: upper edge portion, M (MF / MR): occupant, I: vehicle interior, O: vehicle exterior, S1, S2, S3, S4: Head protection airbag device.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Motoki Hayashi 1 Nagahata, Ochiai, Kasuga-cho, Nishi-Kasugai-gun, Aichi Prefecture Inside Toyoda Gosei Co., Ltd. Address Toyoda Gosei Co., Ltd. F-term (reference) 3D054 AA02 AA03 AA04 AA07 AA17 AA18 AA21 BB21 DD14 EE08 EE30 FF20

Claims (4)

[Claims] 1. An inflator is housed at the upper edge of a window of a vehicle and, when inflation gas flows from an inflator at the time of operation, covers the inside of the window and expands so that the head of an occupant can be restrained. An airbag device comprising: an airbag, wherein a pressing device capable of pressing an occupant approaching the window in a vehicle inward direction is disposed around the window, the airbag comprising: Is disposed between the pressed occupant and the window so as to be deployed and inflated. 2. The apparatus according to claim 2, wherein the pressing device includes a pressing member that protrudes in a vehicle inward direction substantially orthogonal to the window and that can press an occupant approaching the window when activated. The head protection airbag device according to claim 1, wherein: 3. The head protection airbag device according to claim 1, wherein the pressing device is disposed at a lower edge side portion of a periphery of the window inside the vehicle. 4. The head protection airbag device according to claim 1, wherein the pressing device is disposed on a seat on which the occupant sits.