JP2003002150A - Head protective air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a head protective air bag device capable of smoothly disposing an unfolded and inflated air bag between an occupant and a window even when the occupant is close to the window. SOLUTION: The head protective air bag device S1 has the air bag 51 which is folded and housed in an upper edge side UW of the window SW1 on the cabin side of a vehicle, and is unfolded and inflated so as to cover the cabin side I of the window SW1 when inflation gas flows in. The air bag 51 is housed so as to be covered with a lower edge part 8a of a roof head lining 8 and to be unfolded and inflated by pushing open the lower edge part 8a toward the cabin side I. The air bag 51 is arranged to set the level of its interference with the lower edge part 8a when the air bag is completely unfolded and inflated, so as to allow swinging toward the cabin side I of the lower end 51b when positioned in the cabin side I of the occupant M, and to be disposed along the window SW1 when positioned in the vehicle outer side O of the occupant M.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head protection airbag device for deploying and inflating an airbag at the time of rollover (overturning / overturning) or side collision of a vehicle. It is folded and stored on the upper edge side of the window, and when the inflation gas flows in, it expands and inflates so as to cover the inside of the vehicle.

[0002]

2. Description of the Related Art Conventionally, as a device for covering a window inside a vehicle with an inflated airbag, as is known from International Publication No. WO98 / 19894, a side window located on the side surface of the vehicle. The airbag is folded and stored in a portion on the upper edge side of the peripheral edge of the side window, and the inflation gas from the inflator is introduced into the airbag at a predetermined time, and the inflated airbag covers the inside of the side window.

The airbag at the completion of deployment and inflation is
In order to prevent the vehicle from being pushed outside by the occupant and moving to the outside of the vehicle, tension is generated in the front-rear direction of the vehicle and the vehicle is arranged.

However, when such an air bag is used in a head protection air bag device which is operated when rollover (overturning / overturning) of a vehicle is predicted, the following problems occur. .

That is, during rollover of the vehicle, it is unavoidable that the upper half of the occupant swings greatly to the left and right as the vehicle rotates. For example, when the occupant's head is extremely close to the side window, When the airbag is deployed and inflated, the airbag may be placed inside the passenger's head rather than between the occupant's head and the side window, and in such a case, the airbag is completely inflated. When tension is applied to the airbag in the vehicle front-rear direction, the airbag cannot be repositioned between the occupant's head and the side window, and conversely, the airbag presses the occupant's head against the side window.

[0006] The present invention solves the above-mentioned problems, and even when an occupant is approaching the windshield, the airbag for expanding and inflating the head can be smoothly arranged between the occupant and the windshield. An object is to provide a bag device.

[0007]

A first head protection airbag device according to the present invention is folded and housed on the upper edge side of a window inside a vehicle, and when the inflation gas flows in, the window is protected. A head protection airbag device configured to deploy and inflate so as to cover the inside of the vehicle, wherein the airbag pushes the lower edge of the roof head lining toward the inside of the vehicle when the airbag is deployed and inflated. The roof head lining is stored so that it can be opened and deployed to be inflated so that it can be stored in the lower edge of the roof head lining. When the vehicle is located in the vehicle, when the passenger moves in the vehicle inner direction, the vehicle inner side of the lower end side of the airbag is arranged so that the passenger can move to the vehicle inner side position of the airbag. Is arranged so that it can be swung in the direction, and when the airbag is located outside the vehicle of the occupant, the airbag is set along the window. It is characterized by

The setting of the state of interference with the lower edge of the roof head lining at the completion of deployment and expansion of the airbag is set by the area of the inflated portion of the airbag that interferes with the lower edge of the roof head lining. It is desirable to do.

The second head protection airbag device according to the present invention is folded and housed on the upper edge side of the window inside the vehicle so as to cover the inside of the window when the inflation gas flows in. A head protection airbag device configured to include an airbag that expands and inflates, wherein the airbag is near an intermediate portion in a vertical direction at the time of expansion and inflation, and a lower end side of the airbag is placed inside the vehicle. A head protection airbag device comprising a movable bending portion.

It is desirable that the bent portion is formed by a non-inflated portion of the airbag.

[0011]

According to the first head protection airbag device of the present invention, when the expanded and inflated airbag is located inside the passenger, the airbag is moved when the passenger moves toward the inside of the passenger. In order to allow the occupant to move to the vehicle inside position, the lower end side of the airbag is allowed to swing toward the inside of the vehicle, and when the airbag is located outside the occupant, As you arrange the bag along the wind,
The state of interference with the lower edge of the roof head lining of the airbag at the time of completion of deployment and inflation is set.

Therefore, even if the airbag is arranged inside the vehicle at the head of the occupant approaching the window at the beginning of deployment and inflation, the occupant can move to the inside position of the airbag. That is, the vehicle rolls over, moves laterally,
If there is a side collision, the occupant may move inward from the window toward the inside of the vehicle.At that time, the airbag swings the lower end side toward the inside of the vehicle without pressing the occupant toward the outside of the vehicle. Then, it becomes possible to move the lower end side to the outside of the vehicle so as to get over the occupant's head and enter between the occupant and the window.

After that, the airbag is arranged along the window due to the interference state with the lower edge of the roof head lining, and even if the occupant moves to the outside of the vehicle, the airbag causes the occupant's head to move. The section can be properly restrained.

Of course, from the beginning of deployment and inflation of the airbag,
If deployed and inflated between the occupant and the window, when the deployment and inflation are completed, the airbag is arranged along the window due to the state of interference with the lower edge of the roof headlining of the airbag. Even if you move outside,
The occupant's head can be properly restrained by the airbag.

Therefore, in the first head protection airbag device according to the present invention, even if the occupant is approaching the window, the inflated and inflated airbag can be provided to the occupant and the window without pressing the occupant to the outside of the vehicle. It can be arranged smoothly between and.

As set forth in claim 2, the setting of the state of interference with the lower edge portion of the roof head lining in the airbag at the time of completion of deployment and inflation is set to the inflated portion of the airbag that interferes with the lower edge portion of the roof head lining. If the configuration is set by the area of, for example, by changing the shape of the inflated portion itself of the airbag, to adjust the interference area with the lower edge of the roof head lining of the airbag inflated portion,
Alternatively, without changing the shape of the airbag inflation portion, the mounting position of the airbag on the vehicle is adjusted in the vertical direction to adjust the increase or decrease in the interference area between the airbag inflation portion and the lower edge of the roof head lining. As a result, the predetermined interference state can be easily secured without using a separate member.

Further, in the second head protection airbag device according to the present invention, when the inflation gas flows in, the airbag is inflated and inflated downward from the upper edge side of the window to the inside of the window. Cover.

Even when the airbag is arranged inside the vehicle in the head of the occupant approaching the window at the beginning of the deployment and inflation, the airbag is located near the intermediate portion in the vertical direction during deployment and inflation. The air bag is configured to include a bent portion capable of moving the lower end side of the airbag to the inside of the vehicle. Therefore, the airbag that has completed the expansion and inflation does not strongly press the occupant toward the wind side. On the contrary, if the vehicle rolls over, laterally moves, or collides with the side surface, the occupant may move in a direction away from the window to the inside of the vehicle.
The airbag bends the bent portion, moves the lower end side to the inside of the vehicle, and then returns so as to ride over the occupant's head, and suppresses the amount of movement of the entire airbag to the inside of the vehicle, and It becomes possible to enter smoothly during the period.
Then, after that, if the airbag is sandwiched between the occupant's head and the window, the occupant's head can be accurately restrained by the airbag.

Therefore, in the second head protection airbag apparatus according to the present invention, even if the occupant is approaching the window, the expanded and inflated airbag can be restrained in the amount of movement so that the occupant can swiftly and smoothly. And can be placed between the wind and the window.

In this second head protection airbag device, if the bent portion is formed by the non-inflatable portion of the airbag as described in claim 4, the bent portion can be easily formed. can do.

[0021]

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

Head protection airbag device S of the first embodiment
As shown in FIGS. 1 and 10, the reference numeral 1 denotes an airbag 51 (51F, which is folded to the upper edge side UW of the inside of the side windows SW (SW1 and SW2) located on the side surface VS of the vehicle V1.
.51R) and an inflator 66 capable of supplying inflation gas to the airbags 51F and 51R.

In the vehicle V1 of the first embodiment, the windows SW1 and SW2 are the front door FD and the rear door R.
The airbag 51F is disposed in each of D and D so as to be able to cover the inside of the window SW1 when deployed and inflated, and the roof side rail on the body 1 side from above the front door FD to above the center pillar CP at the peripheral edge of the window SW1. The airbag 51R is disposed in the portion RR so that the airbag 51R can cover the inside of the window SW2 when deployed and inflated, and is provided on the roof side rail portion RR on the body 1 side from above the rear door RD to above the rear pillar portion RP at the periphery of the window SW2. It is arranged.

Further, in the head protecting airbag apparatus S1 of the first embodiment, as shown in FIGS. 2, 6 and 10, each of the airbags 51F and 51R at the completion of deployment and inflation is the window SW.
Even if the windshield WG is opened, the movement restricting means 40 is provided so as not to move largely to the outside O of the vehicle.
It is arranged so as to be supported by. Movement restriction means 4
0 is the window SW1, SW by the feeding means 48
A support member 41 (41F / 41R) that is extended from the peripheral edge of 2 and can shield the inside I of the windows SW1 and SW2.
It is configured with. In the case of the embodiment, the feeding means 48 is composed of a pretensioner 49.

The operation of the inflator 66 and the pretensioner 49 is controlled by the control device 70, and the control device 70 outputs a rollover detection signal from the rollover sensor 71 for predicting rollover of the vehicle V1 or the like. The inflator 66 and the pretensioner 49 are operated at the time of inputting, and when the detection signal at the time of the side collision of the vehicle V1 is input from the side collision sensor 72.
The control device 70, the rollover sensor 71, and
The side impact sensor 72 is arranged at a predetermined position of the vehicle V1.

As shown in FIG. 2, the front door FD and the rear door RD are different from each other in the opening shape and the peripheral shape of the windows SW1 and SW2, and have substantially the same structure, and are the same as the door frame 12 outside the vehicle. , A door frame garnish 21 arranged on the periphery of the windows SW1 and SW2 inside the door frame 12, and a door frame 1
2 and a door trim 37 arranged below the garnish 21 on the inner side of the vehicle.

Each of the door frames 12 is made of sheet metal, and has an upper edge portion 13 on the upper edge side which is arranged at the periphery of each of the windows SW1 and SW2, and front and rear portions which are arranged substantially vertically on both front and rear sides. The vertical edge portions 14 and 15 and the lower edge portion 16 on the lower edge side are provided. Rear vertical edge 15
Mounting holes 15a and 15b for mounting the respective support members 41F and 41R are formed near the upper and lower ends (see FIG. 7).
reference).

Each of the door frame garnishes 21 is made of a synthetic resin such as a thermoplastic polyolefin elastomer, and has an upper edge portion 22 on the upper edge side disposed on the periphery of each of the windows SW1 and SW2, and substantially at both front and rear ends. Front / rear vertical edge portions 23 and 24 arranged in the vertical direction, and
A lower edge portion 25 on the lower edge side is provided. The upper edge portion 22, the front vertical edge portion 23, and the rear vertical edge portion 24 are the window SW1.
-The upper edge 13 of the door frame 12 at the periphery of SW2
The front vertical edge portion 14 and the rear vertical edge portion 15 have a substantially U-shaped cross section that can be fitted to the vehicle interior I (see FIG. 3).

The rear vertical edge portion 24 that covers the stored support members 41F and 41R has a mounting hole 15 for the door frame 12.
A metal locking pin 30 that is inserted and locked into the a and 15b is embedded (see FIG. 7). Also, each garnish 21
As shown in FIG. 3, the rear vertical edge portion 24 is provided with a door portion 27 that is pushed and opened by each support member 41 when the stored support members 41F and 41R are unrolled. The door portion 27 is provided with a thin hinge portion 28 at the vehicle inner end portion so as to be easily opened. The vertical edge side storage portion 45, which will be described later, of each of the support members 41 folded and stored is the door portion 27.
The front side is covered and is housed between the door portion 27 and the rear vertical edge portion 15 of the door frame 21.

Further, on the upper edge side of the lower edge portion 25 of each garnish 21, as shown in FIG. 6, a thin breakable portion 33 extending in the longitudinal direction of the vehicle is arranged and a cover portion 32 is arranged. ing. The cover portion 32 covers an upper portion of a lower edge side storage portion 46 of the support member 41 which is folded and stored and which will be described later, and covers an upper portion of a trajectory of the traction material tip 49c in the pretensioner 49 serving as the feeding means 48. There is. When the leading end 49c of the traction material moves forward (see FIGS. 1 and 2), the support material 41 causes the portion 3 to be broken.
3 is broken to form the opening 34, and the lower edge portion 41b of the expanded support material 41 is arranged in the opening 34.

The garnish 21 is formed as a compatible two-color molded product, and has a door portion 27 and a hinge portion 28.
The vicinity of the cover portion 32 is formed of a polyolefin-based thermoplastic elastomer or the like so that it can be easily opened when the support material 41 is expanded, and the other portion is compatible with the polyolefin-based thermoplastic elastomer such as the hinge portion 28. In order to secure the strength, it is made of synthetic resin such as hard polypropylene.

Further, as shown in FIG. 3, an inner panel 2 and an outer panel 3 are arranged on the periphery of the doors FD and RD on the body 1 side, and further, on the body 1 side, the door FD is formed. A weather strip 5 that seals the outer peripheral edge of the RD is provided. And the weather strip 5
When the doors FD / RD are closed, the top 21a of the garnish 21 that protrudes toward the inside of the vehicle and the lower front edge / lower edge of the doors FD / RD away from the garnish 21
It will be pressed against the trailing edge. The top portion 21a protruding toward the inside of the vehicle of the garnish 21 has an upper edge portion 22 and a front vertical edge portion 23.
It is arranged on the rear vertical edge portion 24. Further, a member 18 shown in FIG. 3 is a weather strip fixed to the outer edge side of the door frame 12, and this weather strip 18
Is pressed against the outer panel 3 on the body 1 side when the doors FD and RD are closed. Further, the member of reference numeral 19 is a glass run.

Then, each support member 41 (41F / 41R)
As shown in FIGS. 1 and 2, the sheet is formed of a sheet-like cloth material made of flexible polyester thread or polyamide thread so as to shield the windows SW1 and SW2. Most of the support material 41F is a vertical edge side portion VW arranged in the rear side substantially vertical direction at the peripheral edge of the window SW1.
Most of the support member 41R is also housed in the rear edge side portion VW arranged in the rear side of the peripheral edge of the window SW2 in a substantially vertical direction. In the case of the embodiment, the windows SW1 and SW2 are the front and rear doors FD and R.
The support members 41F and 41R are opened at D, and are provided between the rear vertical edge portion 15 of the door frame 12 and the rear vertical edge portion 24 of the door frame garnish 21 at the window SW1 and SW2 peripheral edges of the doors FD and RD, respectively. It is folded and stored in the
Door frame 1 located at the lower edge side portion DW of SW2 peripheral edge
It is folded and accommodated between the lower edge portion 16 of the second frame 2 and the lower edge portion 25 of the door frame garnish 21.

The support members 41F and 41R have a shape when the feeding is completed, with the top and bottom of the storage side vertical edge portion VW being the apexes 42 and 43, and the window SW1.
・ The tip part extending along the lower edge of the SW2 periphery is apex 44.
And has a substantially triangular plate shape. Then, the top and bottom apex portions 42 and 43 are fixed to the rear vertical edge portion 15 of the door frame 12 in the vertical edge portion VW, and the tip side apex portion 44 is connected to the traction member 49b of the pretensioner 49. There is. The upper and lower apex portions 42 and 43 are respectively provided with mounting holes 42a and 43a (see FIG. 7). Then, the locking pin 30 embedded in the garnish 21 arranged on the vehicle interior side of the door frame 12 is inserted into the mounting holes 42a and 43a, and the mounting is provided above and below the rear vertical edge portion 15 of the door frame 12. Holes 15a ・ 15b
The upper and lower apex portions 42 and 43 are fixed to the door frame 12 by being locked and attached to the door frame 12. Each tip-side apex portion 44 is connected to the tip 49c of the traction member 49b of the pretensioner 49.

Further, as shown in FIG. 2, the supporting members 41F and 41R are arranged so as to straddle the lower rear corners C of the windows SW1 and SW2 during storage, so that the rear longitudinal edges 24 of the respective door frame garnishes 21. And the lower edge portion 25 are covered with the vertical edge side storage portion 45 and the lower edge side storage portion 46, respectively, and are stored in an inverted L shape. The folding of these support members 41 is performed by using the upper apex portion 42 of the support material 41 in a flattened state as the center of the fan.
It is fan-folded so that the folding width on the side of the lower edge 41b is wider than that on the side.

The lower edge side storage portion 46 of each support member 41 in the stored state is the lower edge portion 25 of the garnish.
Is not stored in the entire length in the front-rear direction, but is stored near the vertical edge portion 24 side after the garnish as about 1/3 to 1/5 of the entire length of the lower edge portion 25.

Feeding means 4 for each supporting member 41F / 41R
The pretensioner 49 as 8 is an inflator.
A flexible traction member 49b extending from the main body 49a by utilizing an electric motor, a restoring force of a spring, an electromagnetic solenoid, and the like.
It is configured to be able to tow immediately. In the case of the embodiment, the main body 49a is fixed to the lower edge portion 16 of the door frame.

The airbags 51F and 51R are shown in FIGS.
As shown in FIG. 10, the inflation gas from the inflator 66 is made to flow and inflates, and they are separated and independent from each other. In the case of the embodiment, the airbags 51F and 51R are
Both of them have a substantially rectangular plate shape and are woven by thread weaving from threads such as polyester and polyamide.

The airbags 51F and 51R are
As shown in FIG. 9, a gas inflow portion 52 that inflates the inflation gas so as to separate the vehicle interior side wall portion 52a and the vehicle exterior side wall portion 52b from each other, and a vehicle interior sidewall portion that does not allow the inflation gas to flow in. It is composed of a non-expandable portion 55 which is formed by connecting the outer side wall portion 52b and the vehicle outer wall portion 52b.

The gas inflow portion 52 is connected to the inflator 66 and has a cylindrical connection port portion 5 into which the inflation gas can flow.
3 and a substantially rectangular plate-shaped inflating portion 54 that inflates by inflating the inflating gas. Connection port 53
Is arranged at the upper rear end of the airbag 51F, and is arranged at the upper front end of the airbag 51R. Then, each connection port portion 53 is
It is connected to the inflator 66.

The inflating section 54 has a restricting section 57, 57 which will be described later.
Is composed of three cell portions 54a that bulge like a horizontal bar. Then, as shown in FIGS. 8 and 12, the cell portion 54a on the upper end side includes an upper edge 56a of a peripheral edge portion 56 described later.
A plurality of extending portions 54b extending upward so as to enter the side
Is provided.

The non-inflatable portion 55 is disposed on the upper edge side of the peripheral portion 56, the peripheral portion 56 surrounding the peripheral portion of the inflatable portion 54, the restricting portion 57 disposed inside the inflatable portion 54 away from the peripheral portion 56. And a mounting portion 58 that

The mounting portions 58 are provided with mounting holes 58a, respectively, and are disposed in the vicinity of the upper and lower edges of the peripheral portions 56 of the airbags 51F and 51R in the front-rear direction. As shown in FIG. 4, the mounting brackets 63 are fixed, and each mounting portion 58 is mounted on the inner panel 2 together with the mounting brackets 63 by the mounting bolts 64 that are inserted through the mounting holes 58a.

The airbags 51F and 51R are
The inner panel 2 is provided with the upper ends 51a of the airbags 51F and 51R at the time of deployment and expansion, using the respective mounting portions 58.
It is only fixed to the lower end 51 when expanded and expanded.
The b side is provided as a free end so as to be swingable in a vehicle interior I direction and a vehicle exterior O direction that are substantially orthogonal to the windows SW1 and SW2.

Further, the restricting portion 57 is provided for each airbag 51F.
-In the expansion part 54 of 51R, it is arrange | positioned near the intermediate part of an up-down direction in two steps of a substantially horizontal direction. Each regulation section 5
Both front and rear ends of 7 are arranged apart from the peripheral edge portion 56. These restricting portions 57 are arranged so that the thickness of each portion of the inflating portion 54 becomes substantially equal. Further, the restricting portion 57 of the embodiment allows each inflating portion 54 to be inflated by three cell portions 54a that inflate so as to extend in the front-rear direction.
It is arranged so as to be divided in the vertical direction. Therefore, in each of the airbags 51F and 51R, the restricting portion 57 disposed in the inflating portion 54 is used as the bending portion 61, and the lower end 51b side is bent in two steps to make the vehicle in a direction substantially orthogonal to the windows SW1 and SW2. It is possible to swing more easily in the inner I direction and the outer O direction.

The airbags 51F and 51R are
It is folded in a bellows shape from the lower end 51b side to the upper end 51a side, and is housed in the upper edge side portion UW at the peripheral edge of each of the windows SW1 and SW2. Specifically, the folded airbags 51F and 51R are housed while being covered by the lower edge portion 8a of the roof head lining 8 on the vehicle inner side of the roof side rail portion RR. The roof head lining 8 is made of synthetic resin and has a lower edge 8
The a is configured to be opened to the inside I of the vehicle. That is, at the time of deployment and inflation, the airbags 51F and 51R push the lower edge portion 8a toward the vehicle inner side I, project downward, and are arranged between the occupant M and the support members 41F and 41R.

When the airbag 51F is deployed and inflated,
The airbag 51R covers the rear vehicle inside of the wind SW1, the upper side of the center pillar garnish 9 in the vehicle inside of the center pillar portion CP, and the front vehicle inside of the window SW2, and the airbag 51R includes the rear vehicle inside of the window SW2 and the rear pillar. The front side of the rear pillar garnish 10 on the vehicle inner side of the portion RP is covered.

In the embodiment, each airbag 5
The window shields 60 that cover the windows SW1 and SW2 of 1F / 51R have substantially the entire length of the lower end 60b.
The support members 41F and 41R are arranged so that they can be overlapped in the horizontal direction when the feeding is completed (see FIG. 10).

Furthermore, each airbag 5 at the time of completion of deployment and inflation
In the interference state with the roof head lining lower edge portion 8a on the upper end 51a side of the 1F / 51B, a part of the extending portion 54b of each inflating portion 54 is such that the lower edge portion 8a (in particular, the lower end 8b thereof).
As a result, when the airbags 51F and 51R, which are inflated and inflated, are positioned on the vehicle exterior O of the occupant M as a state of being pressed in the vehicle exterior O direction, they are arranged along the windshield WG of the windows SW1 and SW2. Is set as follows (see FIG. 11B and FIG. 12). Further, the state of interference with the roof head lining lower edge portion 8a on the upper end 51a side of each airbag 51F / 51B at the time of completion of deployment / inflation is such that the airbags 51F / 51R at deployment / inflation are located inside the vehicle I of the occupant M. At this time, when the occupant M moves in the vehicle interior I direction, the occupant M is allowed to move to the vehicle interior I position of the airbags 51F and 51R.
It is set so as to allow the lower end 51b of 51R to swing in the direction I inside the vehicle (see AB of FIG. 11).

In the case of the first embodiment, the state of interference between the upper end 51a side of each of the airbags 51F and 51B and the roof head lining lower edge portion 8a at the time of completion of deployment and inflation is as shown in FIG. It is set by the area of the inflating portion 54 of the airbag 51F / 51R that interferes with the lower edge portion 8a of the headlining. Further, in the case of the first embodiment, a plurality of extending portions 54b are arranged on the upper edge side of the inflating portion 54, and the extending portions 54b that interfere with the roof head lining lower edge portion 8a of the extending portion 54b. Is adjusted by increasing or decreasing the force F that presses the extending portion 54b at the lower end 8b of the lower edge portion 8a in the vehicle outside O direction.

The inflator 66 is a cylinder type and is attached to the inner panel 2 of the roof side rail portion RR.
While being held by the mounting bracket 67, the mounting bolt 6
It is attached by using 8. Inflator 6
6 is a dual type in which the inflation gas can be discharged from both ends, the inflation gas discharged from the front end side expands and inflates the front airbag 51F, and the inflation gas discharged from the rear side is the rear air. The bag 51R will be expanded and inflated.

The mounting of the head protecting airbag apparatus S1 of the first embodiment on the vehicle V1 will be described. First, the movement restricting means 40 is assembled. That is, first, each support member 41 in a flattened state has the upper apex portion 42 as the center of the fan, and the folding width of the lower edge portion 41b side is wider than that of the upper apex portion 42 side to form the tip side apex portion 44. The lower apex part 4
3 is folded in a fan shape, and then each folded support member 41 is wrapped with a plurality of breakable tape members (not shown) for preventing collapse. In this folded state, the folded parts from the upper apex part 42 to the lower apex part 43 are accommodated between the rear vertical edge part 15 of the door frame 12 and the rear vertical edge part 24 of the door frame garnish 21. The storage portion 45 is formed, and the folding portion from the lower apex portion 43 to the tip side apex portion 44 is stored between the lower edge portion 16 of the door frame 12 and the lower edge portion 25 of the door frame garnish 21. It becomes the part 46. The tip-side apex portion 44 is in a folding completed state, and the traction material tip 49c of a pretensioner 49 described later.
It is exposed at the tip position so that it can be easily connected to.

Further, the locking pin 30 is inserted into the mounting holes 42a and 43a, and the upper and lower apex portions 42 and 43 of the respective support members 41 are attached to the vehicle outside of the vertical edge portion 24 after the garnishing.

The main body 49a of the pretensioner 49
Is fixed to the lower edge portion 16 of the door frame 12 in each door FD / RD, and the tip-side apex portion 44 of each support member 41 is connected to the tip 49c of the traction member 49b of the pretensioner 49. Stop pin 30.3
0 is attached to the mounting holes 15a and 15b of the door frame 12, and the upper edge portion 22, the front vertical edge portion 23, and the rear vertical edge portion 24 of the garnish 21 are attached to the upper edge portion 13 of the door frame 12.
・ While fitting the front vertical edge portion 14 and the rear vertical edge portion 15,
Garnish 2 by using bolts, etc.
If 1 is fixed to the door frame 12 of each door FD / RD, the movement restricting means 40 can be assembled to each door FD / RD. After that, if each door trim 37 is attached to the lower portion of the lower edge 16 of the door frame, the door FD
Door FD / R that can complete the assembly of RD
If D is attached to the body 1, the movement restricting means 40 can be mounted on the vehicle V1.

In addition, the vehicle V of the airbag 51F / 51R
Speaking of mounting on 1, the airbag 51F ・ 5
1R is folded to the upper end 51a side, and each of the airbags 51F and 51R is wrapped with a breakable tape material so as not to be folded. Then, the mounting brackets 63 are attached to the respective attachment portions 58 of the airbags 51F and 51R, the connection port portions 53 are connected to the inflator 66, and the attachment brackets 67 are attached to the inflator 66 to attach the airbag assembly. Form. After that, the mounting brackets 63 and 67 are fixed to the inner panel 2 with bolts 64 and 68, and the roof head lining 8 is attached to the inner panel 2.
The 1F / 51R and the inflator 66 can be mounted on a vehicle. Then, if the support members 41F / 41R, the pretensioner 49, the airbags 51F / 51R, and the inflator 66 are attached to the vehicle V1, the head protection airbag device S1 can be mounted on the vehicle V1.

The control device 70, the rollover sensor 71, and the side collision sensor 72 are separately attached to predetermined positions of the vehicle V1, and when the head protection airbag device S1 is mounted on the vehicle V1, the The lead wire (not shown) extending from the tensioner 49 or the inflator 66 is connected to the controller 7
It will be connected to 0.

After the head protection airbag device S1 is mounted on the vehicle V1, the control device 70 inputs a rollover detection signal from the rollover sensor 71 that predicts the rollover or the like of the vehicle V1. Activate 49. Then, each pretensioner 49 is pulled by the traction member 4
Since the tip 49c of 9b is pulled so as to move forward, the respective support members 41F and 41R are changed from the folded state as shown by the chain double-dashed lines in FIGS. Since the tip side apex part 44 moves forward,
The door portion 27 of the vertical edge portion 24 after the garnish is pushed open, and the breakable portion 33 of the lower edge portion 25 of the garnish is opened so that the windows SW1 and SW2 are deployed so as to be shielded.

At this time, the control device 70 inputs the rollover detection signal from the rollover sensor 71,
Since the inflation gas is discharged from the inflator 66 by operating the inflator 66,
In the F / 51R, the inflation gas is flown into the gas inflow portion 52 to be inflated to rupture the tape material (not shown) and push the lower edge portion 8a of the roof head lining 8 to the inside I of the vehicle to open it. As shown in FIG. 4, the support members 41F and 41R are deployed and inflated downward so as to shield the windows SW1 and SW2 on the inner side I of the vehicle.

That is, in the head protection airbag apparatus S1 of the first embodiment, the vehicle interior I of the windows SW1 and SW2 is I.
Thus, the support members 41F and 41R shield the windows SW1 and SW2, and the air bags 51F and 51R shield the windows SW1 and SW2 between the support members 41F and 41R and the occupant M on the inside I of the vehicle. , The occupant M and the support member 41 (41F / 41R) and the airbag 51.
(51F / 51R) can be properly restrained.

In the first embodiment, when the inflated and inflated airbags 51F and 51R are located inside the vehicle interior I of the occupant M, the airbags 51F and 51R are moved when the occupant M moves in the vehicle interior O direction. To allow the occupant M to move to the vehicle inside I position of the airbag 51F and to allow the lower end 51b of the airbag 51 to swing in the vehicle interior I direction.
When the 51R is located on the outside O of the occupant M, the airbags 51F and 51R are arranged along the windshield WG of the windows SW1 and SW2 so that the roofs of the airbags 51F and 51R at the time of completion of deployment and inflation are completed. An interference state with the lower edge 8a of the headlining is set.

Therefore, for example, as shown in A of FIG. 11, even if the airbag 51F is arranged on the inside I of the head MH of the occupant M approaching the window SW1 at the beginning of deployment and inflation, The occupant M can move to the position I inside the airbag 51F. That is, if the vehicle V1 rolls over, laterally moves, or strikes a side surface, the occupant M may move in the direction I inside the vehicle away from the window SW1, and at that time, as shown in B of FIG. Airbag 5
1F swings the lower end 51b side toward the inner side I of the vehicle without pressing the occupant M to the outer side O, and then moves the lower end 51b side to the outer side O so as to get over the occupant's head MH. It becomes possible to enter between the occupant M and the window SW1.

After that, the airbag 51F is
Due to the interference state with the roof head lining lower edge portion 8a, the roof head lining is arranged along the window SW1. As shown in FIG. 11C, even if the occupant M moves to the outside O of the vehicle, the airbag 51F causes The occupant's head MH can be restrained appropriately.

Of course, if the airbags 51F and 51R are deployed and inflated between the occupant M and the windows SW1 and SW2 from the beginning of the deployment and inflation, the airbag 5 is completed at the completion of the deployment and inflation.
Since the airbags 51F and 51R are arranged along the windows SW1 and SW2 due to the state of interference with the roof headlining lower edge portion 8a of the 1F and 51R,
Even if the occupant M moves to the outside O of the vehicle, the airbag 51F / 5
With 1R, the occupant's head MH can be properly restrained.

In the above embodiment, the control device 70 operates the pretensioner 49 and the inflator 66 even when the detection signal is input from the side collision sensor 72 which detects the side collision of the vehicle V1. In that case, the same action and effect as described above can be obtained.

Therefore, in the head protection airbag system S1 of the first embodiment, the occupant M is forced to use the windows SW1 and SW2.
Even if the vehicle is approaching the vehicle, the inflated airbags 51F and 51R can be smoothly arranged between the vehicle occupant M and the windows SW1 and SW2 without pressing the vehicle occupant M to the outside O of the vehicle.

Further, in the first embodiment, the setting of the state of interference with the roof head lining lower edge portion 8a in the airbags 51F and 51R at the time of completion of deployment and expansion is set to the airbag 51F which interferes with the roof head lining lower edge portion 8a.・
The configuration is made according to the area of the expansion portion 54 of 51R. That is, the airbag inflating portion 54 is provided with a large number of extending portions 54b so as to increase the area of interference with the lower edge portion 8a of the roof head lining, and is adjusted, without using a separate member. By setting the shape of the inflatable portion 54 of the bag 51F / 51R itself, it is possible to easily ensure a predetermined interference state.

Further, in the first embodiment, the airbag 51
The F / 51R is configured to include a bent portion 61 that is capable of moving the lower end 51b side of the airbag 51F / 51R to the vehicle inner side I near the intermediate portion in the vertical direction during deployment and inflation.
Therefore, the airbag 51F ・ 5 that has completed the expansion and inflation
Even if 1R is placed inside the vehicle I of the occupant M at the beginning of deployment and expansion, the airbags 51F and 51R do not strongly press the occupant M toward the windows SW1 and SW2, and conversely, the vehicle V1.
If there is a rollover, a lateral movement, a side collision, or the like, the occupant M may move in a direction away from the windows SW1 and SW2 to the inside I of the vehicle. At that time, as shown in B of FIG. The bags 51F and 51R bend the bending portion 61 to move the lower end 51b side to the inside I of the vehicle. Then, the airbags 51F and 51R return so as to get over the occupant head MH. At this time, the airbag 51F / 5
Since the lower end 51b of the 1R is bent, the amount of movement of the entire airbag 51F / 51R to the vehicle interior I can be suppressed, and the 1R can smoothly enter between the occupant M and the windows SW1 and SW2. By the way, at this time, the movement amount of the occupant's head MH to the vehicle inner side I is at least the airbag 51F.
Since the turning radius from the bent portion 61 to the lower end 51b is small, the lower end 51b easily separates from the occupant's head MH at the portion bent toward the vehicle interior I on the lower end 51b side of 51R. Airbags 51F and 51R
It becomes possible to smoothly enter between the occupant M and the windows SW1 and SW2. And after that, the airbag 5
1F ・ 51R is occupant head MH and window SW1 ・ SW
If sandwiched between the two, the occupant head MH can be accurately restrained by the airbags 51F and 51R.

Therefore, in the head protection airbag apparatus S1 of the first embodiment, the occupant M is forced to use the windows SW1 and SW2.
51F ・ 5, expanded and inflated even when approaching
It is possible to quickly and smoothly arrange the 1R between the occupant M and the windows SW1 and SW2 while suppressing the amount of movement.

In the first embodiment, the airbag 5
The bent portion 61 of 1F / 51R is the airbag 51F / 51.
It is formed by the restriction portion 57 of the non-inflatable portion 55 provided on the R itself, and the bent portion 61 can be easily formed on the airbag 51F / 51R.

In the head protection airbag apparatus S1 of the first embodiment, the occupant head MH approaches the windows SW1 and SW2 when the airbags 51F and 51R are deployed and inflated, and the airbags 51F and 51R are released. Even if it is arranged on the inside I of the passenger head MH, the inside I of the windows SW1 and SW2
Since sheet-shaped support members 41F and 41R that shield the windows SW1 and SW2 are arranged in the
1F ・ 41R restrains the occupant's head MH,
It does not deteriorate the restraint performance of.

Further, in the first embodiment, the air bag 51
The windshield 60 of F / 51R has the lower end 6 respectively.
Supporting material 41F ・ 41 when feeding is completed
Since it is arranged so that it can be overlapped with R in the horizontal direction,
Even if the window glass WG of the windows SW1 and SW2 is opened, the airbags 51F and 51R are supported by the support material 41F.
-Stablely supported by 41R, the cushioning property is good, and the occupant M can be restrained.

Further, in the first embodiment, the rear side of each of the airbags 51F and 51R also covers the inside of the center pillar portion CP and the rear pillar portion RP, so these airbag portions 51F and 51R are covered by the airbag portions 51F and RP.・ 51R
Is supported more stably, and conversely, the airbag 51F / 51
Depending on R, center pillar part CP and rear pillar part RP
The interference with the occupant M can also be prevented.

In the first embodiment, even if the window glass WG is opened, the window SW1 is set so as not to move the airbags 51F and 51R to the outside O of the vehicle.
The movement restricting means 40 provided with the support members 41F and 41R covering the vehicle inner side I of SW2 is exemplified, but these support members 41F and 41R are the windows SW1 and SW.
It may be arranged so as to cover the outside O of the vehicle 2. The support members 41F and 41R not only cover the windows SW1 and SW2 of the doors FD and RD, but also when the airbags 51F and 51R cover the windows provided on the body 1 side. It may be configured so as to extend from the peripheral edge of the one side window.

The support members 41F and 41R may be net-like sheet members having meshes as long as they can support the airbags 51F and 51R.
Further, it may be formed from a strip-shaped sheet material or a strip-shaped or string-shaped member.

Further, the feeding means 48 for feeding the support material 41 is the pretensioner 49 as in the embodiment.
In addition, an inflator, a cylinder, or the like that utilizes gas pressure, such as a type that is ignited to generate combustion gas, a type that releases compressed gas, or a mixed type thereof, may be used. When the inflator is used, the support material may be expanded to shield the window.

Head protection airbag device S of the second embodiment
2 is a side surface VS of the vehicle V2 as shown in FIGS.
The airbag 74 folded and stored in the upper edge side UW of the inside of the side windows SW (SW1 and SW2), the front window FW, and the rear window RW located at
And an inflator 94 that supplies inflation gas to the airbag 74.

As shown in FIG. 16, the vehicle V2 is provided with airbag devices S2 on the left and right side surfaces VS, respectively, as is the case with the airbag device S1 mounted on the vehicle V1. These airbag devices S2 are mounted on the vehicle V2.
In the following description, the airbag device S2 on the right side of the vehicle V2 will be described, and the airbag device S2 on the left side of the vehicle V2 will be described. Is omitted.

Also, in the vehicle V2, like the vehicle V1, the center pillar portion CP is arranged between the front pillar portion FP and the rear pillar portion RP, and the side window SW is formed by the center pillar portion CP. It is composed of a side window SW1 of the front door FD and a side window SW2 of the rear door RD which are divided into front and rear.

The airbag 74 is shown in FIG.
As shown in, a main body 75 that covers the inside of the side windows SW1 and SW2 by straddling the center pillar CP, and a front window FW and a rear window RW that are disposed on both front and rear ends of the main body 75. Vehicle side V on the inside
An extended portion 86 (86F / 86B) covering approximately half of the S side,
It is configured with.

The extended portions 86F and 86B constitute the movement restricting means 100 for preventing the airbag main body 75 from largely moving to the outside O of the vehicle even when the wind glass WG of the window SW is opened. And the main body 7
The front and rear ends 75c and 75d of 5 are restricted in movement so as to be pulled in the direction I of the inside of the vehicle. Each of these extended portions 86F and 86B is formed as a flexible sheet, and is formed from the front and rear ends 75c and 75d of the main body portion 75 to the inside I of the vehicle in a direction substantially orthogonal to the side windows SW1 and SW2.
The front extension portion 86F is disposed in front of the occupant MF in the front seat when the airbag 74 is inflated and inflated, and the rear extension portion 86B extends in the rear seat occupant when the airbag 74 is inflated and inflated. It is configured to be arranged on the rear side of the MB.

In the case of the embodiment, the main body portion 75 is formed from a yarn of polyamide, polyester or the like by a hollow weave, and as shown in FIGS. Gas inflow part 7 expandable so as to separate the part 76a and the vehicle outer side wall part 76b from each other.
6 and a non-expansion portion 80 that does not allow the expansion gas G to flow in. The gas inflow portion 76 is configured so that it can maintain the internal pressure for at least 5 seconds after the expansion is completed, that is, the expanded state can be maintained.

The gas inflow portion 76 comprises a connection port portion 77 and an inflating portion 78, and the inflating portion 78 is juxtaposed in the front-rear direction by a restriction portion 82 of the non-inflatable portion 80, which will be described later. A plurality (eight in the embodiment) of cell units 78a (78a)
a ・ 78ab ・ 78ac ・ 78ad ・ 78ae ・ 78a
f.78ag.78ah), a gas supply passage portion 78b for supplying the expansion gas G from the inflator 94 to each cell portion 78a, and a communication portion 78d.

The gas supply passage portion 78b extends in the front-rear direction and is arranged on the upper end 75a side of the main body portion 75 so as to communicate with the upper end of each cell portion 78a. Then, in the vicinity of an intermediate portion in the front-rear direction of the gas supply passage portion 78b, a substantially cylindrical connection port portion 77 connected to the inflator 94 is provided so as to project upward. Further, the gas supply passage portion 78b is configured such that the front and rear end portions 78c slightly enter the upper ends of the extending portions 86F and 86B. These end portions 78c easily push the lower edge portion 8a of the roof head lining 8 on the upper edge side of the front window FW or the rear window RW to the inside I of the vehicle when the airbag 74 is deployed and inflated, and each extension portion 78c. 86F and 86B are arranged so that they can smoothly project downward.

The lower ends of the cell portions 78a communicate with each other and the upper ends thereof communicate with the gas supply passage portion 78b. The two cell portions 78a (78ad and 78ae) of the non-expandable portion 80, which sandwich a plate-shaped portion 84, which will be described later, are provided in the plate-shaped portion 84.
They are communicated with each other by a communication portion 78d arranged below. At the time of expansion, these cell parts 78a are expanded and expanded into a columnar rod shape so as to extend in the up-down direction by the restricting part 82 arranged in the up-down direction. The length dimension L1 at the time of completion of expansion is set to be shorter than the length dimension L0 of expansion that is flattened.

In the case of the second embodiment, the front four cell parts 78a (78aa, 78ab, 78ac, 78a) are arranged.
d) covers the inner side of the side window SW1 on the side of the front seat and the front side of the center pillar part CP, and the four rear side cell parts 78a (78ae / 78af / 78ag / 78ah).
However, the side window SW2 on the rear seat side and the rear pillar R
The inside of the car with a part of P will be covered.

The non-expansion portion 80 has a substantially I-shape that divides the peripheral edge portion 81 arranged around the gas inflow portion 76 and the gas inflow portion 76 at the time of expansion into each cell portion 78a with a substantially uniform thickness. The regulating portion 82 and the peripheral edge portion 8 on the upper end 75a side of the main body portion 75
1, a plurality of mounting portions 83 extending upward and a substantially rectangular plate-shaped portion 84 disposed between the central cell portions 78ad and 78ae. The peripheral portion 81 is also arranged around the plate-shaped portion 84. The peripheral portion 81, the regulating portion 82, and the mounting portion 83 are densely woven, and the plate-shaped portion 84 is
Since it is not in direct contact with the gas inflow portion 76, it is coarsely woven.

The plate-like portion 84 is provided to secure the overall shape of the main body portion 75 and to reduce the volume of the gas inflow portion 76. In the case of the embodiment, the plate-shaped portion 84 is
When the airbag 74 is deployed and inflated, it is provided so as to cover the inside of the vehicle near the rear side of the center pillar CP and the front side of the side window SW2.

Each of the mounting portions 83 is for mounting the main body portion 75 to the inner panel 2 on the body 1 side of the vehicle V2, and the mounting holes 8 into which the mounting bolts 92 are inserted respectively.
3a. Each mounting portion 83 has a structure shown in FIG.
5, a mounting bracket 9 that acts as a backing plate
1 is attached, and each attachment portion 83 is attached and fixed together with the attachment bracket 91 to the inner panel 2 on the body (vehicle body) 1 side of the roof side rail portion RR on the upper edge side of the side windows SW1 and SW2. . Then, each mounting portion 83 is attached to the inner panel 2 on the upper end 75a side of the main body portion 75.
Attached to the lower end 75b of the main body 75
The side becomes the free end, and side windows SW1 and SW2
It is possible to swing in a vehicle interior I direction and a vehicle exterior O direction that are substantially orthogonal to.

The mounting portion 83F on the front end side is fixed to the inner panel 2 above the front pillar portion FP, and the mounting portion 83B on the rear end side is fixed to the inner panel 2 above the rear pillar portion RP. .

Further, in the airbag 74 of the embodiment,
Each restricting portion 82 has a protruding portion 82a protruding in the front-rear direction, which is arranged at an intermediate portion in the vertical direction. Therefore, the protruding portions 82a serve as bending portions 90 that divide the cell portions 78a into upper and lower portions, and the main body portion 75 is easily bent in a V-shape in cross section.
1. Inward I direction or O outside the vehicle in a direction substantially orthogonal to 1 / SW2
Direction, it is possible to swing more easily.

Each of the extending portions 86F and 86B is formed in a substantially right-angled triangular plate shape that narrows the tip portion 88 side from the front and rear ends 75c and 75d of the main body portion 75. The base portion 87 on the main body portion 75 side of each extended portion 86F / 86B is the main body portion 7
5 are formed so as to extend from the entire length of the front and rear ends 75c and 75d in the substantially vertical direction. That is, each extended portion 86
When the F / 86B is flatly deployed together with the main body 75, the upper edge 86a side extends in the front-rear direction in parallel with the upper end 75a side of the main body 75, and the lower edge 86b side is oblique from the lower end 75b side of the main body 75. It is formed as a hypotenuse extending upward. Further, in the case of the embodiment, each extended portion 86F / 86
B is the mesh material 85, and the front and rear end portions 75 of the main body portion 75.
It is sewn to the c-75d and arranged. The mesh material 85 is made of polyamide thread, polyester thread, or the like, and is woven so as to have a large number of small through holes and openings, and is formed into a flexible sheet shape.

Further, the main body portion 7 of each extended portion 86F / 86B
At the tip portion 88 separated from 5, so as to project upward,
A substantially rectangular plate-shaped mounting portion 89 having a mounting hole 89a through which the bolt 92 can be inserted is formed (see FIG. 14). These mounting portions 89 also have mounting brackets 91 fixed,
It is fixed to the inner panel 2 on the body 1 side with a bolt 92. Then, the mounting portion 89 of the front side extension portion 86F
Is fixed to the upper edge UW of the front window FW near the center of the roof portion R in the vehicle left-right direction.
Further, the mounting portion 89 of the rear side extension portion 86R is fixed to the upper edge side UW of the rear window RW near the center of the roof portion R in the vehicle left-right direction.

Further, in the airbag 74 of the embodiment,
The main body portion 75 straddles over the center pillar portion CP,
It is folded and stored on the upper edge side of the side windows SW1 and SW2 on the inside of the vehicle, and is covered by the lower edge 8a of the portion of the roof headlining 8 that covers the inside of the roof R and is located on the roof side rail portion RR. There is. Further, the front-side extending portion 86F extends from above the front pillar portion FP to above the front side of the occupant MF in the front seat, that is, in the case of the embodiment, over the upper edge side UW of the front window FW in the roof portion R. It is folded and stored, and is covered by the lower edge portion 8a of the roof head lining 8 on the front side of the roof portion R. Further, the rear-side extending portion 86B extends from above the rear pillar portion RP to above the rear side of the occupant MR in the rear seat, that is, in the embodiment, over the upper edge side UW of the rear window RW in the roof portion R. The lower edge portion 8a of the roof head lining 8 on the rear side of the roof portion R that is folded and stored
Is covered with. Similar to the first embodiment, these lower edge portions 8a are also configured to be pushed by the airbag 74 when deployed and inflated, and to move the lower end 8b side to the vehicle inside I and open it.

The interference state with the roof head lining lower edge portion 8a in the airbag main body portion 75 at the time of completion of the expansion and inflation is similar to that of the first embodiment in that a part of the gas supply passage portion 78b of the inflation portion 78 is generated. , The lower edge portion 8a (in particular, the lower end 8b thereof) is pressed by the pressing force F in the vehicle outer side O direction when the main body portion 75 at the time of deployment and expansion is located on the vehicle outer side O of the occupant M. It is set so as to be arranged along the wind glass WG of the windows SW1 and SW2 (see B in FIG. 20). Further, the state of interference with the roof headlining lower edge portion 8a of the airbag main body 75 at the time of completion of deployment and expansion is that the main body 75 at the time of deployment and expansion is located inside the vehicle I of the occupant M. When moving in the vehicle interior I direction, the occupant M moves to the vehicle interior I position of the main body 75.
Is set so that the lower end 75b side of the main body portion 75 can be swung in the inward direction I of the vehicle (see A and B in FIG. 20).

In the case of the second embodiment, the state of interference between the main body 75 and the lower edge portion 8a of the roof head lining at the time of completion of the expansion and expansion is the same as in the second embodiment.
It is set by the area of the inflating portion 78 of the main body portion 75 that interferes with. More specifically, the airbag body 75
Of the vehicle V2 of the mounting portion 83 by adjusting the protruding length of the mounting portion 83 protruding upward from the peripheral portion 81 without changing the shape of the mounting portion 83.
This is done by adjusting the mounting position to the vertical direction and adjusting the increase or decrease in the interference area between the gas supply passage portion 78b of the expansion portion 78 and the lower edge portion 8a of the roof head lining.

The inflator 94 is a cylindrical cylinder type main body 94a, and an inflation gas G discharged from the main body 94a connected to the main body 94a (see FIG. 17).
And a connecting pipe portion 94b in the shape of a bent pipe that guides the air bag 74 to the connection port 77 of the airbag 74. The inflator 94 is held by a mounting bracket 96 that holds the outer periphery of the main body portion 94a, and is fixed to the inner panel 2 near the center pillar portion CP by fixing the bracket 96 to a bolt 97. The lower end of the connecting tubular portion 94b is covered with the connection port 77, and the connection port 77 is attached by a fastener such as a clamp (not shown).
It is in communication with.

The inflator 94 is electrically connected to the control device 70 via a lead wire (not shown), and is operated by inputting an operation signal from the control device 70. The control device 70 controls the vehicle V
When a signal is input from the rollover sensor 71 that detects the rollover or turning of the vehicle No. 2 and when a signal is input from the side collision sensor 72 that detects the side collision of the vehicle V2.
Each outputs an operation signal to the inflator 94.

Head protection airbag apparatus S of the second embodiment
As for the mounting of the vehicle No. 2 on the vehicle V2, first, the main body portion 75 formed by the hollow weave is attached to the front / rear extension portions 86F / 86.
B is sewn and connected, and the airbag 74 is manufactured. Then, after deploying the airbag 74 flat, the main body 75
Together with the front and rear extension parts 86F and 86B together with the lower end 7
The bellows fold is performed so that the 5b side approaches the upper end 75a side, and the airbag 74 is wrapped with a breakable tape material (not shown) so as not to collapse.

Next, each mounting portion 83 of the airbag 74
While attaching the mounting bracket 91 to 89,
The connection port portion 77 is connected to the connecting cylinder portion 94b of the inflator 94, and the mounting bracket 96 is attached to the inflator 94 to form the airbag assembly.

Then, the mounting brackets 91 and 96 are fixed to the inner panel 2 at predetermined positions by bolts 92 and 97,
If the roof head lining 8 is attached to the inner panel 2, the airbag 74 and the inflator 94 are attached to the vehicle V.
2 can be mounted.

The control device 70, the rollover sensor 71, and the side collision sensor 72 are separately attached to predetermined positions of the vehicle V2, and when the head protection airbag device S2 is mounted on the vehicle V2, the inflator is installed. A lead wire (not shown) extending from 94 is connected to the control device 70.

After the head protection airbag device S2 is mounted on the vehicle V2, the control device 70 inputs a rollover detection signal from the rollover sensor 71, which predicts the rollover of the vehicle V2, etc. Activates the inflator 94. Then, since the inflation gas is discharged from the inflator 94, the airbag 74 is
The expansion gas is caused to flow into the gas supply passage portion 78b from the connection port portion 77, and the gas supply passage portion 78b is connected to the respective cell portions 7b.
The expansion gas is caused to flow into 8a. Therefore, the main body portion 75 of the airbag 74 breaks the tape material (not shown) and expands, pushing the lower edge portion 8 of the roof head lining 8 toward the inside I of the vehicle and opening the upper edge side UW of the side windows SW1 and SW2. Expands and expands downward from the side window SW
The inner side of the 1 · SW2 and the center pillar portion CP is covered. In addition, front and rear end portions 75c and 75 of the main body portion 75
The front / rear extension parts 86F / 86B extending from d are pulled by the main body part 75 to push the roof head lining lower edge part 8a to the inside I of the vehicle and project downward from the housed roof part R, The front side extension portion 86F is arranged on the front side of the front seat occupant MF so as to cover the front window FW, and the rear side extension portion 86B is arranged on the rear side of the rear seat occupant MB so as to cover the rear window RW. Will be placed.

Also in the second embodiment, when the expanded and inflated airbag main body 75 is located inside the vehicle occupant I, the main body 75 is moved when the occupant M moves in the vehicle interior O direction.
To enable the movement of the occupant M to the I position inside the vehicle,
When the lower end 75b side of the main body portion 75 is allowed to swing in the vehicle interior direction I and the main body portion 75 is positioned on the vehicle exterior side O of the occupant M, the main body portion 75 is moved to the window glass of the windows SW1 and SW2. An interference state with the roof head lining lower edge portion 8a in the main body portion 75 at the time of completion of expansion and expansion is set so as to be arranged along the WG.

Therefore, for example, as shown in A of FIG. 20, when the main body portion 75 is inflated and expanded, the window SW is
1 inside the vehicle at the head MH of the occupant MF approaching 1
However, if the vehicle V2 rolls over, laterally moves, collides against the side surface, etc., the occupant MF may move in the direction I inside the vehicle away from the window SW1. As shown, the main body 75 swings the lower end 75b side in the vehicle inner direction I without pressing the occupant M to the vehicle outer side O, and then the lower end 75b side is the vehicle outer side so as to get over the occupant head MH. It is possible to move it to O and enter between the occupant MF and the window SW1.

Then, after that, the main body portion 75 is arranged along the window SW1 due to the state of interference with the lower edge portion 8a of the roof head lining.
As shown in, even if the occupant MF moves to the outside O of the vehicle, the body 75 can accurately restrain the occupant's head MH.

Of course, from the beginning of the expansion and expansion of the main body 75,
If the expansion and the expansion are completed between the occupant M and the windows SW1 and SW2, when the expansion and the expansion are completed, the main body 75 is interfered by the interference state with the roof head lining lower edge 8a of the main body 75.
Is disposed along the windows SW1 and SW2, so that even if the occupant M moves to the outside O of the vehicle, the main body portion 75 can accurately restrain the occupant head MH.

The extended portion 86F.8 of the airbag 74 is
6B has flexibility even if the tip portion 88 separated from the main body portion 75 is fixed to the inner panel 2 on the body (vehicle body) 1 side. , The extended portions 86F and 86B are bent to form the lower end 75b.
The side can be swung like a free end, and the lower end 75b
It is possible to smoothly move the vehicle side to the vehicle inner side I and the vehicle side to the vehicle outer side O when returning.

Further, in the above embodiment, the control device 70 operates the inflator 94 even when the detection signal is input from the side collision sensor 72 which detects the side collision of the vehicle V2. The same action and effect as above can be obtained.

Therefore, also in the head protection airbag system S2 of the second embodiment, the occupant M is forced to use the windows SW1 and SW2.
Even when the vehicle body is approaching, the expanded and inflated airbag main body 75 can be smoothly arranged between the vehicle occupant M and the windows SW1 and SW2 without pressing the vehicle occupant M to the outside O of the vehicle.

Further, also in the second embodiment, the setting of the interference state with the roof head lining lower edge portion 8a in the airbag main body portion 75 at the time of completion of the expansion and inflation is set to the main body portion 75 which interferes with the roof head lining lower edge portion 8a. Expansion part 78
The area is set according to the area. That is,
Without changing the shape of the airbag inflating portion 78, the attachment position of the airbag main body portion 75 to the vehicle V2 is adjusted in the vertical direction so that the interference area between the airbag inflating portion 78 and the roof headlining lower edge portion 8a. By adjusting the increase or decrease of
The predetermined interference state can be easily secured without using a separate member.

Also in the second embodiment, the airbag main body 75 is provided with a bent portion 90, which is movable toward the vehicle inner side I on the lower end 75b side of the main body 75, in the vicinity of an intermediate portion in the vertical direction during deployment and inflation. It is equipped with. Therefore, even if the airbag main body 75 that has completed the expansion and inflation is arranged inside the vehicle I of the occupant M at the beginning of the completion of the expansion and inflation,
Do not press the occupant M strongly against the windows SW1 and SW2,
On the contrary, if the vehicle V2 rolls over, moves laterally, collides with the side surface, or the like, the occupant M may move in a direction away from the windows SW1 and SW2 toward the inside I of the vehicle.
As shown in B of 0, the main body portion 75 bends the bending portion 90 to move the lower end 75b side to the inside I of the vehicle, and then,
It is possible to return so as to get over the occupant's head MH, suppress the amount of movement of the entire airbag main body 75 to the vehicle interior I, and smoothly enter between the occupant M and the windows SW1 and SW2. After that, if the main body 75 is sandwiched between the occupant head MH and the windows SW1 and SW2,
The occupant's head MH can be accurately restrained by the main body 75.

Therefore, also in the head protection airbag apparatus S2 of the second embodiment, the occupant M is forced to use the windows SW1 and SW2.
75, which is expanded and inflated even when it is close to
Can be quickly and smoothly arranged between the occupant M and the windows SW1 and SW2 while suppressing the amount of movement.

Also in the second embodiment, the bent portion 90 of the airbag main body 75 is formed by the protrusion 82a of the restriction portion 82 in the non-inflatable portion 80 provided on the main body 75 itself.
Since it is formed, the bent portion 90 can be easily formed in the airbag main body 75.

Further, in the second embodiment, the airbag 74
When the expansion and inflation are completed, the front extension portion 86F arranged on the front side of the occupant MF has the tip portion 88 of the extension portion 86F which is separated from the main body portion 75 and the inner panel 2 on the body (vehicle body) 1 side.
Since the base portion 87 is connected to the airbag main body 75, it is difficult to move to the front side even if the occupant head MH disposed inside the airbag main body 75 moves forward. The occupant head MH can be properly restrained by the airbag extension portion 86F.

Further, in the second embodiment, the airbag 7
The front extended portion 86F of No. 4 is formed so as to extend from a portion of the front end portion 75c of the main body portion 74 that is substantially the entire length in the vertical direction, and includes the vicinity of the base portion 87 near the boundary with the main body portion 75 as much as possible. It is possible to secure a wide area of the extended portion 86F and improve the restraint performance when the occupant MF moves forward.

Furthermore, in the head protection airbag apparatus S2, the front extension portion 86F of the airbag 74 is formed in a mesh shape capable of ensuring the front side visibility.
Therefore, even if the airbag 74 completes the expansion and inflation, and the front side extension portion 86F is disposed on the front side of the occupant MF, the front side extension portion 86F has a mesh shape, and the front side visibility can be secured, The occupant MF can easily grasp the surrounding situation. The mesh shape includes a net shape, a grid shape, and the like, and it is sufficient that the extending portion 86F can restrain the occupant MF moving forward and ensure the visibility on the front side.

Of course, if the above points are not taken into consideration, the extension portion 86F may be configured as a flexible sheet having no visibility.

By the way, in the case of the embodiment, the rear extended portion 8
6B is also formed in a mesh shape, and visibility on the rear side can be secured.

Further, in the head protecting airbag apparatus S2 of the second embodiment, the airbag 74 has front and rear extension portions 86F and 86B at the front and rear ends 75c and 75d of the main body portion 75.
And the extended portions 86F and 86B fix the front end portion 88 extending in the vehicle interior direction I to the inner panel 2 on the body 1 side. Even if the main body 75 is pushed by the occupant MF / MB moving to the outside O of the vehicle, the main body 75 moves to the outside O of the vehicle. It becomes difficult, and the restraint performance of the occupants MF / MB can be improved.

In particular, in the second embodiment, the airbag main body 75 expands and inflates so as to contract from the length dimension L0 in the front-rear direction to the length dimension L1 from the uninflated state, and The front and rear extension portions 86F and 86B extending from the front and rear ends 75c and 75d of the main body portion 75 are
Since the front end portion 88 extending from is fixed to the inner panel 2 on the body 1 side, the main body portion 75 and the extending portions 86F and 86B at the time of deployment and expansion are approximate to a substantially cylindrical shape that surrounds the occupant M. In this state, the main body portion 75 arranged on the vehicle outer side O of the occupant M does not easily move to the vehicle outer side O even when pushed by the occupant M moving to the vehicle outer side O.
The occupant M can be accurately restrained by the vehicle inner side I of the vehicle 5 and the extended portions 86F and 86B. When the airbag main body 75 is configured so as to reduce the length dimension L1 in the front-rear direction at the completion of deployment and inflation from the length dimension L0 in the front-rear direction in the uninflated deployed state, If the extending portion 86 is provided at at least one end in the front-rear direction of the portion 75, the above-described action and effect can be obtained. Therefore, the airbag may be configured by omitting only the rear extension portion 86B or by omitting only the front extension portion 86F.

A pillar portion CP extending substantially vertically is provided and side windows S are provided in front of and behind the pillar portion CP.
In the airbag device S2 of the second embodiment to be mounted on the vehicle V2 in which W1 and SW2 are arranged, the main body portion 75 of the airbag 74 straddles the pillar portion CP and the side windows SW1 and SW1 before and after the pillar portion CP. Since the airbag main body 75 is arranged so as to cover the SW2 and the movement of the airbag main body 75 to the outside O of the vehicle is also restricted by the pillar portion CP, the airbag 74 having a long front-rear direction has an outside O of the vehicle O. Crew M moving to
Even if it is pressed by F / MB, it will be difficult to move to the outside O of the vehicle. Therefore, as the airbag 74 to be mounted on such a vehicle, at least one of the front / rear extension parts 86F / 86B may be arranged so as to be connected to the main body part 75.

In the second embodiment, the extension portion 86 is
The structure is shown in which it is formed separately from the airbag main body 75 and is connected to the main body 75 by using suture or the like.
May be integrally formed with the main body portion 75. In that case, a bag-weave may be performed integrally with the main body portion 75. Alternatively, the airbag 74 does not need to be manufactured using a hollow weave, but a single piece of flat cloth is folded, and predetermined portions such as peripheral edges overlapped with each other are sewn, adhered, welded, etc. 78 may be formed. In this case, the extension portion 86 may be formed integrally with the main body portion 74, or may be formed as a separate body and sewn, bonded, welded, or the like to the main body portion 74, eyelet stop, rivet stop, or the like. You may connect using the fixing means of.

[Brief description of drawings]

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

FIG. 2 is a front view of the door of the vehicle according to the first embodiment as viewed from the inside of the vehicle.

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

FIG. 4 is a schematic enlarged cross-sectional view of a IV-IV portion of FIG.

5 is a schematic enlarged cross-sectional view of a VV portion in FIG.

6 is a schematic enlarged cross-sectional view of a VI-VI portion of FIG.

FIG. 7 is a schematic enlarged cross-sectional view of a VII-VII portion of FIG.

FIG. 8 is a front view of the airbag according to the first embodiment.

9 is a vertical cross-sectional view of the airbag of the first embodiment when inflated, and is a schematic cross-sectional view taken along the line IX-IX in FIG.

FIG. 10 is a front view of the head protection airbag apparatus according to the first embodiment when it is operating, as viewed from the inside of the vehicle.

FIG. 11 is a diagram for explaining the behavior of the airbag when the vehicle rolls over in the first embodiment.

FIG. 12 is a perspective view showing an interference state with the lower edge portion of the roof head lining when the airbag of the first embodiment is deployed and inflated.

FIG. 13 is a front view of the head protection airbag device according to the second embodiment as viewed from the inside of the vehicle.

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

FIG. 15 is a schematic enlarged cross-sectional view of the XV-XV portion of FIG.

FIG. 16 is a plan view of a vehicle equipped with the head protection airbag device of the second embodiment.

FIG. 17 is a front view showing a state in which the airbag used in the second embodiment is flatly deployed.

FIG. 18 is a transverse cross-sectional view showing the airbag of the second embodiment when inflated, showing a portion XVIII-XVIII in FIG. 17.

FIG. 19 is a schematic perspective view showing an airbag of the second embodiment when inflated in a vehicle-mounted state.

FIG. 20 is a diagram illustrating the behavior of the airbag when the vehicle rolls over in the second embodiment.

[Explanation of symbols]

8 ... Roof head lining, 8a ... Lower edge part, 51 / 51F / 51R / 74 ... Air bag, 51b / 75b ... Lower end, 54/78 ... Inflatable part, 55/80 ... Non-inflatable part, 61/90 ... Bent part , SW (SW1, SW2) ... (Wind) Side window, V1, V2 ... Vehicle, I ... Inside of car, O ... Outside of car, M (MF / MB) ... Occupant, S1, S2 ... Head protection airbag device.

Claims (4)

[Claims] 1. An airbag which is folded and stored on an upper edge side of a window inside a vehicle, and which is expanded and inflated so as to cover the inside of the window when inflating gas flows in.
A head protection airbag device comprising: a lower part of the roof head lining, the airbag being capable of being expanded and inflated by pushing a lower edge portion of the roof head lining toward the inside of the vehicle when the airbag is expanded and inflated. When the airbag is located inside the passenger's vehicle, it is stored in the vehicle's interior direction when the airbag is located inside the vehicle. To allow the occupant to move to the vehicle inner side position of the airbag, the lower end side of the airbag is allowed to swing toward the vehicle inner side, and the airbag is A head protection airbag device, wherein the airbag is set so that the airbag is arranged along the window when the airbag is located outside the vehicle of the occupant. 2. The setting of the state of interference with the lower edge of the roof head lining at the completion of deployment and expansion of the airbag is set by the area of the inflated portion of the airbag that interferes with the lower edge of the roof head lining. The head protection airbag apparatus according to claim 1, wherein the head protection airbag apparatus is provided. 3. An airbag which is folded and stored on an upper edge side of a window inside a vehicle, and which is expanded and inflated so as to cover the inside of the window when an inflation gas flows in.
A head protection airbag device comprising: a airbag, wherein the airbag has a bent portion capable of moving a lower end side of the airbag to a vehicle inner side in the vicinity of an intermediate portion in a vertical direction at the time of deployment and inflation. A head protection airbag device characterized in that it is provided with. 4. The bent portion is formed by a non-inflated portion of the airbag.
The head protection airbag device according to.