JPH0580919U - Airbag device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an airbag device having a knee protector function. [Structure] When the airbag E is deployed and inflated rearward from the airbag module M, a part of the airbag E and an upper portion of the garnish (tilting member) G are coupled by coupling means 112, 113, 114. From that,
Since the upper part of the garnish G is pulled rearward by the airbag E via the connecting means, the garnish G tilts rearward about the lower fulcrum α. Further, since the link means 116, 117 for restricting the forward movement of the garnish G are provided between the garnish G and the seat frame 102 in the rearward tilted state, the garnish G is maintained in the rearward tilted state. As a knee protector, the knee portion 119 of the occupant H is protected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an airbag device, and more particularly to an airbag device in which an airbag module is installed above a seat back.

[0002]

[Prior Art]

 For example, as is known in Japanese Utility Model Publication No. 50-49833, an airbag module is installed on the upper part of the seat back, and from there, the airbag is deployed and inflated rearward so that a vehicle collision occurs. An airbag device for protecting a rear passenger is known.

[0003]

[Problems to be solved by the device]

 However, even in the case of this type of airbag device, as with a general airbag device for a front seat occupant installed in a steering wheel, etc. There are technical requirements.

For example, as is the case with a general airbag device for protecting the front seat occupant, even with this type of airbag device installed in the seat back, the airbag is used to occupant's head. It is preferable to take some kind of knee protector measure that can protect the occupant's knees while protecting the torso and chest (first request).

Further, since the airbag module in this type of airbag device is directly fixed to the seat frame that constitutes the skeleton of the seat back, all the impact force from the airbag at the time of a vehicle collision is absorbed by the seat frame. Although it will be received, it is preferable from the viewpoint of occupant protection and seat frame protection if some measures other than this seat frame can be taken to absorb the impact force (second request).

Further, in the case of this type of airbag device, when the seat back is reclined rearward, the orientation of the airbag module is changed and the deployment / inflation direction of the airbag is changed. As such, it is necessary to have a structure that does not allow reclining. Therefore, since it is very inconvenient for the occupant, it is preferable that the seat back of the type in which the air bag module is installed should be able to recline backward without impairing the air bag performance (third request).

The present invention has been made by paying attention to such a conventional technique, and provides an airbag device which can meet the various technical demands as described above.

[0008]

[Means for Solving the Problems]

 In order to meet the first request, the airbag device according to the invention according to claim 1 is an airbag module attached to an upper portion of a seat frame of a seat back so that the airbag can be deployed and inflated rearward, The tilting member is attached to the rear part of the seat back so as to be tiltable rearward about a lower fulcrum, and the upper part of the tilting member and a part of the airbag are arranged to transmit the expansion / inflation force of the airbag to the upper part of the tilting member. And a link mechanism for restricting the forward tilting of the garnish in the backward tilting state.

In order to meet the second requirement, the airbag device according to the second aspect of the present invention is mounted on the upper part of the seat frame of the seat back so as to be rotatable about the upper end. An impact absorbing member, an airbag module attached to the first impact absorbing member so that the airbag can be deployed and inflated rearward, and a lower end portion of the first impact absorbing member and a seat frame. The second shock absorbing member is provided.

In order to meet the third demand, an airbag device according to a third aspect of the present invention includes an air bag module in which an inflator fixing portion and an airbag storage portion are connected by a flexible tubular body, and a lower end. Another lower end is attached to the front and rear of the seat frame that is swingable back and forth around the mounting point, and a subframe that is swingably mounted back and forth around the mounting point and has a height different from that of the seat frame. The inflator fixing portion is fixed to the seat frame or the subframe, and the airbag storage portion is rotatably attached between the upper ends of the seat frame and the subframe. ..

[0011]

[Action]

 In the airbag device according to the invention as set forth in claim 1, when the airbag is deployed and inflated from the airbag module, a part of the airbag and an upper part of the tilting member are connected by a connecting means. Since the upper part of the tilting member is pulled rearward by the airbag via the connecting means, the tilting member tilts rearward about the lower fulcrum. Further, since the tilt mechanism restricts the forward tilt of the tilting member in the rearward tilting state, the rearward tilting state of the tilting member is maintained as it is. Therefore, the tilting member in the backward tilted state can be used as a knee protector, and the knee part of the occupant can be protected by the tilting member.

According to the airbag device of the second aspect of the present invention, the impact force applied to the airbag is transmitted to the first impact absorbing member and absorbed there. Further, when the impact force from the airbag is transmitted to the first impact absorbing member, the lower end portion of the first impact absorbing member rotates toward the seat frame side, and the impact force from the airbag is applied to the second impact absorbing member. Since it also reaches the absorbing member, the impact force is also absorbed there. Therefore, the impact force applied to the airbag is first absorbed by the first and second impact absorbing members and then transmitted to the seat frame, which improves the protection performance of the rear seat occupant by the airbag and enhances the seat frame. The worm itself is also protected.

According to the airbag device of the third aspect of the present invention, since the seat frame, the subframe, and the airbag storage portion constitute a kind of parallel link mechanism, the parallel link mechanism is swung rearward. If it is deformed, the direction of the airbag storage unit mounted between the seat frame and the upper end of the subframe changes from a substantially vertical state to an upward inclined state. Therefore, the airbag storage section always points to the same point in the rear seat space regardless of the front and rear swing angle of the seat frame, and the airbag is always expanded and inflated toward the same portion to ensure the occupant's protection. Can be achieved. Since the inflator fixing part and the air bag accommodating part are connected by a flexible cylinder, the gas is reliably sent from the inflator fixing part side to the air bag accommodating part side.

[0014]

【Example】

 A preferred embodiment of the present invention will be described below with reference to the drawings. Embodiments include first to sixth embodiments, of which the first to third embodiments relate to the invention of claim 1, and the fourth and fifth embodiments relate to the invention of claim 2. The sixth embodiment relates to the device according to the third aspect.

First Embodiment (see FIGS. 1 to 4) Inside the seat back 101, a gate-shaped seat frame 102 made of a metal pipe is arranged, and above the seat frame 102, the seat frame 102 is provided. An auxiliary frame 103, which is parallel to the upper side portion 102a, is attached. The airbag module M is fixed to the upper side portion 102a of the sheet frame 102 and the auxiliary frame 103.

A support panel 104 is joined to the upper portion of the seat frame 102, and a deployment cover 105 that covers the airbag module M is attached to the upper edge of the support panel 104. In addition, 106 is a headrest.

As shown in FIG. 2, in the airbag module M, a base plate 108 is attached to the module cover 107 to seal the internal space, and the airbag E is stored in the internal space in a folded state. The inflator I is fixed to 108. The airbag E has a bag shape so as to inflate gas therein to inflate it, and its inlet 109 is fixed around the injection port 110 of the inflator I via a retainer R. A slit 111 is formed at one corner of the module cover 107, and a resin plate 112 is inserted into the slit 111. A stopper 112a that engages with the inner surface of the module cover 107 is provided on the plate 112, and the front end of the plate 112 is provided with a cloth piece 113 on a part of the airbag E that is stored in the folded state. Are linked together.

Further, the rear end portion of the plate 112 is connected to the upper portion of the garnish G as a “tilting member” provided at the rear portion of the seat back 101 via the connecting piece 114, and accordingly, “in this embodiment”. The “connecting means” is composed of the plate 112, the cloth piece 113, and the connecting piece 114.

The lower end portion of the garnish G is attached to the support portion 115 welded to the lower portion of the seat frame 102 via a rotatable lower support point α, and the entire garnish G is attached to the lower support point α. It is possible to tilt backward around the.

Further, one end of each link 116 is attached to the left and right sides at a substantially central position on the inner surface of the garnish G via a rotation fulcrum β. An inward bent portion 116a is formed at the other end of the link 116, and the bent portion 116a is vertically movably inserted into an inclined guide hole 118 of a guide bracket 117 fixed to the seat frame 102. ing. The guide hole 118 is in a state in which the lower side is slightly inclined rearward, and an engaging portion 118a notched forward is provided at the lower end thereof. The "link mechanism" according to this embodiment includes the link 116, the guide bracket 117 and the like.

Next, the operation of the airbag device will be described. When a vehicle collision occurs, a sensor (not shown) detects this and ignites the gas generating agent provided in the inflator I, and a large amount of gas is emitted from the injection port 110 of the inflator I to the airbag E. Injected and supplied. Then, the airbag E pushes through the module cover 107 and pushes up the deployment cover 105 to deploy and inflate toward the rear occupant H in the rear. At this time, since a part of the airbag E and the upper portion of the garnish G are connected via the cloth piece 113, the plate 112, and the like, as the airbag E expands and inflates rearward, these cloths E The piece 113 and the plate 112 pull the upper part of the garnish G backward.

Then, the entire garnish G tilts rearward about the lower fulcrum α, and the bent portion 116 a of the link 116 descends in the guide hole 118 according to the rearward tilting of the garnish G. When the bent portion 116a of the link 116 descends to the lower end of the guide hole 118, the airbag E is also in a sufficiently inflated state, and the airbag E in the inflated state falls forward. The head and chest of the rear occupant H can be received. At the same time, since the garnish G is tilted rearward, the garnish G can catch the knee portion 119 of the rear seat occupant H. When the knee portion 119 hits the garnish G, the link 116 is pushed forward and the bent portion 116a enters into the engaging portion 118a and is locked there. Therefore, the tilted state of the garnish G is maintained as it is, and the knee portion as a knee protector is maintained. The part 119 can be protected.

In the above operation, when the airbag E is deployed and inflated rearward, the upper portion of the garnish G is pulled rearward through the cloth piece 113 and the plate 112. As seen from the above, since a part of the airbag E is connected to the upper portion of the garnish G by the cloth piece 113 and the plate 112, the airbag E is pulled downward by the cloth piece 113 and the plate 112 while the airbag E is deployed and inflated. As a result, the inflated airbag E can be prevented from escaping upward. Therefore, the airbag E can more reliably catch the rear-seat occupant H who is leaning forward, and the protection performance of the rear-seat occupant H is improved.

Second Embodiment (see FIG. 5) This embodiment shows a modification of the link mechanism for maintaining the tilted state of the garnish G, and the same parts as those of the first embodiment are designated by the same reference numerals. However, duplicate description is omitted. No engaging portion is formed at the lower end of the guide hole 202 of the guide bracket 201 according to this embodiment, and instead, another lock link 204 is provided on the link 203 and the garnish G of the garnish G is provided via the rotation fulcrum β. It is attached to the inner surface. The tip of the lock link 204 is flat like the tip of a flat-blade screwdriver, and slides back and forth on the link 203. A groove portion 205 is formed on the upper surface of the intermediate portion of the link 203 so that the tip end of the lock link 204 can be engaged therewith.

Therefore, when the garnish G is tilted rearward by being pulled by the airbag E, the bent portion 203 a of the link 203 descends in the guide hole 202, and the tip of the lock link 204 is rearward on the upper surface of the link 203. After sliding toward, it enters into the groove portion 205 and enters the engaged state. Therefore, the rearward tilting state of the garnish G is maintained by the link 203 and the lock link 204 which are in the engaged state, so that the garnish G can be used as a knee protector as in the previous embodiment.

Third Embodiment (see FIG. 6) This embodiment shows another modification of the link mechanism for maintaining the tilted state of the garnish G, and the same portions as those of the first embodiment are the same. The same reference numerals are given and duplicate explanations are omitted. No guide hole is provided in the guide bracket 301 according to this embodiment, and instead, a receiving bracket 302 is provided in the seat frame 102 below the guide bracket 301.

Therefore, when the garnish G is tilted rearward by being pulled by the airbag E, the bent portion 116 a of the link 116 slides down the inclined side 301 a of the guide bracket 301 and then falls on the receiving bracket 302. Then, the bent portion 116a of the link 116 that has fallen onto the receiving bracket 302 enters between the lower side 301b of the guide bracket 301 and the receiving bracket 302, and is locked there. Therefore, the rearward tilting state of the garnish G is maintained by this link 116, and the garnish G can be used as a knee protector as in the previous embodiment.

Fourth Embodiment (see FIGS. 7 to 10) In this embodiment, the airbag module M is installed on the upper part of the seat frame 401 via an "impact absorbing member". Reference numeral 402 denotes a first impact absorbing member, which has a structure capable of absorbing impact force in the process of moving a surface 403 which is an impact force input surface to the opposite support surface 404 side while deforming and deforming the flexural deformation portion 405. Then, the airbag module M is attached to the surface 403 of the first impact absorbing member 402. Further, an upper end hook 402a and a lower end hook 402b are provided above and below the support surface 404 of the first impact absorbing member 402, and the upper end hook 402a is rotatably attached to the upper side portion 401a of the seat frame 401. The lower end hook 402b is also rotatably attached to the rear end of the auxiliary frame 406 whose front end is rotatably supported by the seat frame 401 via the rotation fulcrum β.

Between the front and rear ends of the auxiliary frame 406, a second shock absorbing member 408 having a bending deformation portion 407 in the center is provided in a bridging state. In addition, a connecting fulcrum 406a that is bendable upward is set at an intermediate position of the auxiliary frame 406. The connecting fulcrum 406a portion is covered by a tubular portion 409 which is slidable in the front-back direction, and the bending to the upper side is restricted, and the tubular portion 409 has the first impact. It is connected to the surface 403 of the absorbing member 402 via a rotation link 410.

Next, the operation of this embodiment will be described with reference to FIGS. The impact force F generated when the airbag is deployed and inflated rearward from the airbag module M and the rear seat occupant is received by the airbag is first transmitted to the surface 403 of the first impact absorbing member 402. .. When the impact force F is transmitted to the surface 403, the deformed portion 405 is deformed so as to be crushed by the impact force F, and the surface 403 moves forward, so that part of the impact force F is absorbed during this time. Will be done.

Then, when the surface 403 moves forward, the turning link 410 attached to the surface 403 accordingly slides the tubular portion 409 forward, and the connecting fulcrum 406 a of the auxiliary frame 406 is freely moved. Put in a state. When the connection fulcrum 406a is in the free state, a certain degree of impact force F is still applied to the surface 403 of the first impact absorbing member 402, so that the impact force F causes the connection fulcrum 406a to bend upward. The lower end of the shock absorbing member 402 rotates forward. While the lower end portion of the first shock absorbing member 402 rotates forward, the flexural deformation portion 407 of the second shock absorbing member 408 is deformed, so that part of the shock force F can be absorbed even during this time.

As described above, the impact force F applied to the airbag E can be absorbed not only by the airbag but also by the first impact absorbing member 402 and the second impact absorbing member 408. The protection of the seat occupants is further ensured. Further, since the impact force F applied to the airbag is absorbed to some extent by the first impact absorbing member 402 and the second impact absorbing member 408, and then transmitted to the seat frame 401, the load on the seat frame 401 can be reduced, and the seat When manufacturing the frame 401, it is not necessary to select a high strength material to form a strong seat frame 401.

Furthermore, when the airbag receives the body of the rear seat occupant, the airbag becomes a so-called “bottomed state”, and by any chance, a part of the body of the rear seat occupant becomes the first shock absorbing member 402. Even in a situation where the vehicle directly hits, as described above, the lower end portion of the first shock absorbing member 402 rotates forward, so that the occupant can be reliably protected. Further, in order to protect the occupant when the airbag is in a so-called "bottom-bottomed state", even if the elastic strength of the bending deformation portion 407 of the second shock absorbing member 408 is too small, it is too large. However, this is not preferable. Therefore, the elastic strength of the flexural deformation portion 407 of the second shock absorbing member 408 is greater than the impact force input to the seat frame from the air bag module M in the normal case where the airbag does not bottom up and the airbag bottoms out. In such a state, it is preferable that the elastic strength is equal to or less than the impact force input to the seat back by the occupant and is just flexibly deformed by the impact force.

Fifth Embodiment (see FIGS. 11 to 13) In this embodiment as well, similar to the fourth embodiment, an example in which the airbag module M is installed on the upper part of the seat frame 501 via the "shock absorbing member" It is shown. In this embodiment, the auxiliary frame 502 is welded and fixed to the seat frame 501, and the upper hook 501a of the first shock absorbing member 503 is rotatably attached to the upper side portion 501a of the seat frame 501. A second shock absorbing member 504 is interposed between the lower end hook 503b of the first shock absorbing member 503 and the rear end of the auxiliary frame 502. Further, the surface 505 of the first shock absorbing member 503 and the supporting surface 506 are connected by a substantially modified V-shaped rotating link 507 which penetrates the supporting surface 506, and the intermediate position of this rotating link 507. Is provided with a connection fulcrum 507a. The connecting fulcrum 507a is covered with a cylindrical portion 508, and the rear end of a stopper bar 509 having a front end rotatably supported by the seat frame 501 is attached to the cylindrical portion 508. .

Next, the operation of this embodiment will be described. When the impact force F is transmitted to the surface 505 of the first impact absorbing member 503, the second impact absorbing member 504 is deformed so as to be crushed first, and the lower end portion of the first impact absorbing member 503 is deformed. Rotate forward. This is because the surface 505 of the first shock absorbing member 503 and the supporting surface 506 are connected by the deformed V-shaped turning link 507, and the connecting fulcrum 507a is not bent by the tubular portion 508. This is because the rotation link 507 becomes a kind of “replacement bar” and the surface 505 cannot move forward. Then, while the lower end portion of the first impact absorbing member 503 moves forward, part of the impact force F is absorbed.

When the lower end portion of the first impact absorbing member 503 rotates forward, the cylindrical portion 508 is incapable of moving forward due to the stopper bar 509. Therefore, the connecting fulcrum 507 a of the rotating link 507 a. Comes out from the tubular portion 508 to the front side and becomes a free state. When the connection fulcrum 507a is in a free state, a certain amount of impact force F is still applied to the surface 505 of the first impact absorbing member 503, so that the impact force F causes the bending deformation portion 510 of the first impact absorbing member 503. Is deformed so as to be crushed, and the front surface 505 moves forward. When the surface 505 is moved forward, the pivot link 507 is further bent at the connecting fulcrum 507a and the whole is lifted upward. Then, part of the impact force F can be absorbed while the surface 505 moves forward.

Sixth Embodiment (see FIGS. 14 and 15) Inside the seat back 601, a seat frame 603 which is swingable back and forth around a lower end mounting point 603a of the reclining device 602, and the seat frame 603. Similarly, on the rear side of the toe frame 603, there is provided a sub frame 604 which is swingable back and forth around another lower end mounting point 604a and which is lower in height than the seat frame 603. The upper portion of the seat frame 603 is a substantially horizontal bent portion 603c, and the upper end 603b of the bent portion 603c is located substantially directly above the upper end 604b of the sub frame 604 in a normal use state of the seat back 1. It has become.

On the other hand, M is an airbag module, and this airbag module M is separated into an inflator fixing portion 605 and an airbag storage portion 606, and both are a bellows-shaped tube as a “flexible tube”. They are connected by the body 607. That is, a base plate 609 is set in the tubular case 608 of the inflator fixing portion 605, and the inflator I is fixed to the base plate 609. Further, one end of a bellows-shaped cylindrical body 607 is fixed to a base plate 609 around the inflator I so as to surround an injection port 610 of the inflator I.

A base plate 612 is also provided in the case 611 of the airbag storage portion 606, and an opening 612a is formed in the center of the base plate 612. The other end of the bellows-shaped tubular body 607 is fixed to the front surface of the base plate 612 via a retainer R so as to surround the opening 612a. A folded airbag E is housed in the space between the base plate 612 and the surface 611a, and an inlet 613 of the airbag E is opposite to the retainer R on the rear surface of the base plate 612. The retainer R on the side is fixed so as to surround the opening 612a.

In the airbag module M, the inflator fixing portion 605 is fixed to the corner portion formed by the bent portion 603c at the upper portion of the seat frame 603. Further, one airbag storage portion 606 is rotatably attached between the upper end 603b of the seat frame 603 and the upper end 604b of the sub-frame 604. Therefore, since the seat frame 603, the sub-frame 604, and the airbag storage unit 606 constitute a kind of parallel link mechanism, the seat back 1 is tilted backward to be in a reclining state, and the above-described parallel link mechanism is When it is rocked rearward, the orientation of the airbag storage portion 606 mounted between the upper ends 603b and 604b of the seat frame 603 and the subframe 604 changes from a substantially vertical state to an upwardly inclined state. In this way, the airbag storage portion 606 is always directed to the same point P in the rear seat space regardless of the longitudinal swing angle of the seat back 601 (seat frame 603). This same point P is the most suitable point for protecting the head and chest of the rear seat occupant, and the airbag E is always inflated and inflated toward this point P regardless of the longitudinal swing angle of the seat back 601. As a result, occupants can be reliably protected in the event of a vehicle collision.

Further, as described above, even if the angle of the airbag storage portion 606 is changed with respect to the inflator fixing portion 605, both are flexibly connected by the bellows-shaped tubular body 607, so that the inflator fixing portion 605 is connected. The gas injected from the 605 inflator I surely expands and inflates the airbag E in the airbag storage portion 606. That is, when the gas is injected from the inflator I, the gas passes through the bellows-shaped tubular body 607, passes through the opening 612a, and then is injected and supplied into the airbag E. Therefore, the airbag E is the surface of the case 611. 611a is smashed, and it surely expands and inflates toward the same point P of the rear seat space.

Further, in the case of this embodiment, the inflator fixing portion 605, which is electrically connected to various sensors not shown, is not attached to the seat frame 603 instead of changing the angle of the entire airbag module M. Since it is fixed and only the airbag storage portion 606 is movable, the stability of the wiring in the inflator fixing portion 605 can be maintained, and the installation space for the airbag module M in the seat back 1 is small. Complete.

Although the sub-frame 604 is provided on the rear side of the seat frame 603 in this embodiment, the sub-frame 604 may be provided on the front side of the seat frame 603. In that case, it is necessary to make the sub-frame 604 higher than the seat frame 603 and fix the inflator fixing portion 605 to the sub-frame 604 side.

Furthermore, although an example in which the inflator fixing portion 605 and the air bag storage portion 606 are connected only by the bellows-shaped tubular body 607 has been shown, in addition to the bellows-shaped tubular body 607, the inflator fixing portion of the air bag storage portion 606 is fixed. The inflator fixing portion 605 and the airbag accommodating portion 606 may be connected by a rotatable link member that allows a change in angle with respect to the portion 605.

[0045]

[Effect of the device]

 In the airbag device according to the first aspect of the present invention, the airbag is used to protect the head and chest of the occupant, and at the same time, the occupant's knees can be protected by the tilting member that tilts backward.

In the airbag device according to the second aspect of the present invention, the impact force applied from the airbag can be absorbed by the first and second impact absorbing members, so that the protection of the rear seat occupant is further ensured. It also protects the seat frame.

The airbag device according to the third aspect of the present invention has the airbag module installed in the seat back, but the occupant protection performance by the airbag is reliable even when the seat back is largely reclining backward. Maintained at.

[Brief description of drawings]

FIG. 1 is a structural view showing an airbag device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the structure of an airbag module.

FIG. 3 is a side view showing an unused state of the airbag.

FIG. 4 is a side view showing a usage state of the airbag.

FIG. 5 is a side view showing a link mechanism according to a second embodiment of the present invention.

FIG. 6 is a side view showing a link mechanism according to a third embodiment of the present invention.

FIG. 7 is a side view showing an airbag device according to a fourth embodiment of the present invention.

FIG. 8 is an enlarged side view showing the shock absorbing structure in a state where no impact force is applied.

9 is an enlarged side view corresponding to FIG. 8 showing a state where the first impact force absorbing member is deformed by impact force.

FIG. 10 is an enlarged side view corresponding to FIG. 8 showing a state in which the second impact force absorbing member is deformed by the impact force and the lower end portion of the first impact force absorbing member is rotated forward.

FIG. 11 is a side view showing a state in which an impact force has not yet acted on the first impact force absorbing member of the airbag device according to the fifth embodiment of the present invention.

FIG. 12 is an enlarged side view corresponding to FIG. 11, showing a state in which the second impact force absorbing member is deformed by the impact force and the lower end portion of the first impact force absorbing member is rotated forward.

FIG. 13 is an enlarged side view corresponding to FIG. 11 showing a state where the first impact force absorbing member is deformed by impact force.

FIG. 14 is a side view showing an airbag device according to a sixth embodiment of the present invention.

FIG. 15 is a cross-sectional view showing the structure of the airbag module according to the sixth embodiment.

[Explanation of symbols]

 M airbag module E airbag I inflator G garnish (tilting member) α lower fulcrum 101 seat back 102 seat frame 112 plate (connecting means) 113 cloth piece (connecting means) 114 connecting piece (connecting means) 116 link (link mechanism) 117 Guide bracket (link mechanism) 201 Guide bracket (link mechanism) 203 Link (link mechanism) 204 Lock link (link mechanism) 301 Guide bracket (link mechanism) 302 Receiving bracket (link mechanism) 401 Seat frame 402 First impact absorbing member 408 Second shock absorbing member 503 First shock absorbing member 504 Second shock absorbing member 603 Seat frame 604 Sub frame 605 Inflator fixing part 606 Air bag storing part 607 Bellows tubular body (Flexible cylinder)

Claims (3)

[Scope of utility model registration request] 1. An airbag module attached to an upper portion of a seat frame of a seat back so as to deploy and inflate an airbag rearward, and an airbag module attached to a rear portion of the seat back so as to be tiltable rearward about a lower fulcrum. The tilting member, a connecting means for connecting the upper part of the tilting member and a part of the airbag to transmit the deploying / inflating force of the airbag to the upper part of the tilting member, and the front of the tilting member in the backward tilted state. An airbag device, comprising: a link mechanism that regulates tilting. 2. A first shock absorbing member rotatably attached to an upper portion of a seat frame of a seat back about an upper end thereof, and the first shock absorbing member so as to deploy and inflate a airbag rearward. An airbag apparatus comprising: an airbag module attached to a member; and a second impact absorbing member interposed between a lower end portion of the first impact absorbing member and a seat frame. 3. An airbag module in which an inflator fixing part and an airbag storage part are connected by a flexible tubular body, and another lower end in front and rear of a seat frame which is swingably attached back and forth about a lower end attachment point. A subframe that is swingably attached back and forth around an attachment point and has a height different from that of the seat frame, wherein the inflator fixing portion is fixed to the seat frame or the subframe, and An airbag device in which a bag storage portion is rotatably attached between upper ends of a seat frame and a sub frame.