JP6775397B2 - Crew restraint device and seat - Google Patents

Description

The present invention relates to a occupant restraint device and a seat, and more particularly to a occupant restraint device having excellent occupant restraint force and a seat provided with the occupant restraint device.

For example, when acceleration acts in the vehicle length direction (vehicle front-rear direction) and vehicle width direction (vehicle left-right direction) such as offset frontal collision, diagonal collision, rollover, etc., the relative displacement of the occupant with respect to the seat can be suppressed. , An occupant restraint device for restraining an occupant on a seat has already been proposed (see Patent Documents 1 and 2).

The occupant restraint device described in Patent Document 1 increases the amount of protrusion of the side support to the backrest and a pair of left and right side supports provided on the seat back constituting the vehicle seat so as to support the seated occupant from the side. The amount of overhang between the right and left airbags and the side support that can suppress the relative displacement of the occupant in the vehicle width direction with respect to the vehicle seat due to at least acceleration in the vehicle width direction when an offset collision is detected or predicted. It is provided with a control device for controlling the right airbag or the left airbag so as to increase the number of airbags.

Further, the occupant restraint device described in Patent Document 2 includes an upper support member that restrains the shoulder portion of the occupant seated on the seat from above, and a side support member that restrains the shoulder portion from the side.

JP-A-2010-64632 Japanese Unexamined Patent Publication No. 2004-34837

Since the occupant restraint device described in Patent Document 1 described above controls the amount of protrusion of the side support by inflating the airbag embedded in the seat back in the seat back, the occupant in the vehicle length direction There is a problem that the effect is small for a collision in which the binding force of the vehicle is low and the amount of movement in the vehicle width direction is small (for example, a diagonal collision or a frontal collision with a small offset amount).

Further, in the occupant restraint device described in Patent Document 2, the support member has an articulated mechanism and remains arranged on the upper part of the seat even in the retracted state, which hinders the rear view. , Has problems such as giving a feeling of crampedness and oppression. Further, when the occupant moves forward, there is a problem that the occupant comes into contact with the support member at the time of rebound.

The present invention has been devised in view of such problems, and an object of the present invention is to provide an occupant restraint device and a seat that can be normally stored in a seat and can improve the occupant's binding force. To do.

According to the present invention, in an occupant restraint device that restrains an occupant on a seat, an airbag group composed of a plurality of airbags that are normally arranged in the seat and can be expanded and deployed outside the seat at a predetermined timing. A tether group composed of a plurality of tethers having one end connected to each of the plurality of airbags and the other end fixed to the seat, and a gas supply device for supplying gas to the plurality of airbags. Provided is a occupant restraining device characterized in that the airbag group is configured to transmit a reaction force between adjacent airbags when the expansion and deployment is completed.

Further, according to the present invention, in a seat provided with a seat on which an occupant sits and a seat back for supporting the back of the occupant, the occupant restraint device for restraining the occupant on the seat, which is normally the seat. An airbag group composed of a plurality of airbags arranged inside and expandable and deployable outside the seat at a predetermined timing, and one end connected to each of the plurality of airbags and the other end fixed to the seat. A group of tethers composed of a plurality of tethers and a gas supply device for supplying gas to the plurality of airbags are provided, and the airbag group transmits a reaction force between adjacent airbags when expansion and deployment is completed. A seat is provided characterized in that it has an occupant restraint device configured such as.

In the occupant restraint device and the seat described above, the plurality of airbags may be configured to be individually inflatable and deployable without communicating with each other.

Further, it may have a band-shaped guide member arranged over the surfaces of the plurality of airbags.

Further, it may have a reaction force transmitting member arranged between adjacent airbags.

Further, the airbag group may be arranged at a position corresponding to the side portion, shoulder portion, waist portion, thigh portion or a plurality of these portions of the occupant.

Further, the seat may have a shock absorber that tilts the seat back forward in the event of a vehicle collision.

According to the occupant restraint device and the seat according to the present invention described above, since the occupant is restrained by the airbag group configured to transmit the reaction force between the adjacent airbags, the occupant is restrained from the seat toward the occupant. A group of airbags having a curved trajectory can be easily expanded and deployed, and the airbag can be easily expanded and deployed to a position suitable for protecting the occupant, and the binding force of the occupant can be improved.

In addition, since the occupant restraint device is normally housed in the seat, it does not obstruct the rear view, does not give the occupant a feeling of cramping or oppression, and is safe to touch. Also has.

It is an overall block diagram which shows the occupant restraint device which concerns on 1st Embodiment of this invention, (A) shows when the right-hand occupant restraint device operates, (B) shows when the left-hand occupant restraint device operates. It is a figure which shows the modification of the occupant restraint device shown in FIG. 1, (A) shows the first modification, (B) shows the second modification. It is a figure which shows the 3rd modification of the occupant restraint device shown in FIG. It is a side view which shows the sheet which concerns on embodiment of this invention, (A) shows 1st Embodiment, (B) shows 2nd Embodiment. It is a side view which shows the sheet which concerns on embodiment of this invention, (A) shows 3rd Embodiment, (B) shows 4th Embodiment. It is a side view which shows the sheet which concerns on embodiment of this invention, (A) shows 5th Embodiment, (B) shows 6th Embodiment. It is a side view which shows the sheet which concerns on 7th Embodiment of this invention. It is an overall block diagram which shows the occupant restraint device which concerns on 2nd Embodiment of this invention, (A) shows a normal time, (B) shows a time when expansion expansion is completed. It is an overall block diagram which shows the occupant restraint apparatus which concerns on 3rd Embodiment of this invention, (A) shows a normal time, (B) shows a time when expansion expansion is completed.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 (A) to 9 (B). Here, FIG. 1 is an overall configuration diagram showing an occupant restraint device according to the first embodiment of the present invention, (A) is when the right occupant restraint device is operating, and (B) is when the left occupant restraint device is operating. , Is shown. 2A and 2B are views showing a modification of the occupant restraint device shown in FIG. 1, where FIG. 2A shows a first modification and FIG. 2B shows a second modification. FIG. 3 is a diagram showing a third modification of the occupant restraint device shown in FIG.

The occupant restraint device 1 according to the first embodiment of the present invention is, for example, as shown in FIGS. 1 (A) and 1 (B), is an occupant restraint device that restrains the occupant M on the seat S. An airbag group 2 composed of first airbags 21 to third airbags 23 that are normally arranged inside the seat S and can be expanded and deployed outside the seat S at a predetermined timing, and one end of the first airbag 21 to Gas in the tether group 3 composed of the first tether 31 to the third tether 33 connected to each of the third airbags 23 and the other end fixed to the seat S, and the first airbags 21 to the third airbags 23. The airbag group 2 is configured to transmit a reaction force R between adjacent airbags when the expansion and deployment is completed.

The seat S generally includes a seat on which the occupant M sits and a seat back that supports the back of the occupant M. In FIGS. 1 (A) to 3 for convenience of explanation, only the seat back is shown by a chain line. Further, in the present embodiment, the case where the occupant restraint device 1 is arranged on the frame F arranged in the seat back is illustrated. In addition, in FIGS. 1 (A) to 3 and 3, only the body portion of the occupant M is illustrated by a alternate long and short dash line.

As shown in FIG. 1A, for example, the airbag group 2 is composed of a first airbag 21, a second airbag 22, and a third airbag 23 in order from the side closer to the seat S. The number of airbags constituting the airbag group 2 can be arbitrarily designed depending on the size (capacity) and shape of the airbags, but it is preferably about 3 or more.

As shown in FIG. 1 (A), the first airbags 21 to the third airbags 23 are expanded and deployed along a trajectory curved in a substantially arc shape from the side close to the seat S toward the occupant M. At this time, the adjacent airbags are kept in contact with each other. Specifically, the airbag group 2 is expanded and deployed so that the first airbag 21 and the second airbag 22 come into contact with each other, and the second airbag 22 and the third airbag 23 come into contact with each other.

Here, the first airbags 21 to the third airbags 23 are configured so as not to communicate with each other and to be individually expanded and deployed. That is, the first airbags 21 to the third airbags 23 each constitute a bag body that is completed independently, and the expansion gas is individually supplied to the first airbags 21 to the third airbags 23.

Further, the band-shaped guide member 26 may be arranged on the surface of the first airbag 21 to the third airbag 23. By arranging the guide member 26 on the surface of the airbag group 2, the expansion and deployment shape of the first airbag 21 to the third airbag 23 can be stabilized. The guide member 26 can be omitted if necessary.

The tether group 3 includes, for example, as shown in FIG. 1A, a first tether 31 connected to the first airbag 21, a second tether 32 connected to the second airbag 22, and a third airbag. It is composed of a third tether 33 connected to 23. The number of tethers constituting the tether group 3 is the same as the number of airbags constituting the airbag group 2.

One end of the first tether 31 to the third tether 33 is connected to the corresponding first airbag 21 to the third airbag 23, and the other end of the first tether 31 to the third tether 33 is a fixing member to the frame F. It is fixed by 36. The first tethers 31 to 33 may be in the shape of a string having a narrow width or in the shape of a strip having a wide width. Further, the lengths of the first tethers 31 to 33 can be arbitrarily designed according to the expansion and deployment shape of the airbag group 2.

In this way, one end of the first tether 31 to the third tether 33 is connected to each of the first airbags 21 to the third airbag 23, and the other end of the first tether 31 to the third tether 33 is a sheet S (seat). By fixing to a member constituting S or a component connected to the seat S), the reaction force R can be transmitted between adjacent airbags.

Therefore, the reaction force R generated by the third airbag 23 coming into contact with the occupant M during expansion and deployment is transmitted in the order of the third airbag 23 → the second airbag 22 → the first airbag 21, and finally the seat S. It is received by the structure (including frame F, cushioning material, etc.).

The gas supply device 4 is composed of, for example, an inflator, a gas generator, a gas cylinder, an air compressor, or the like. When it is desired to instantly expand and deploy the airbag group 2 at the time of a vehicle collision, the gas supply device 4 is preferably configured by, for example, a pyrotechnic such as an inflator or a gas generator. On the other hand, when it is desired to expand and deploy the airbag group 2 in advance in anticipation of an emergency such as a vehicle collision, a gas cylinder, an air compressor, or the like capable of controlling the timing and flow rate of supplying the expanded gas is used. Is preferable.

The gas supply device 4 is arranged in the seat back of the seat S, for example, and has a gas supply path 41 for supplying expansion gas to each of the first airbags 21 to the third airbags 23. The gas supply path 41 connected to each of the first airbags 21 to the third airbag 23 is, for example, a rubber tube, a tubular member made of the same base cloth as the airbag, or the like.

The gas supply path 41 may be connected to the first airbag 21 to the third airbag 23 separately from the first tether 31 to the third tether 33, or may pass through the inside of the first tether 31 to the third tether 33. One airbag 21 to the third airbag 23 may be connected, or the first tether 31 to the third tether 33 itself may be used as the gas supply path 41. For convenience of explanation, only a part of the gas supply path 41 is shown in FIGS. 1 (A) and 1 (B).

Further, the airbag group 2 (first airbag 21 to third airbag 23) is normally folded and housed in a recess of the frame F of the seat S. At this time, the airbag group 2 may be covered with a wrapping sheet 27 in order to maintain the folded state. In the present embodiment, the "normal time" means a state in which an emergency situation such as a vehicle collision has not occurred, a state in which an emergency situation such as a vehicle collision is not predicted, or it is not necessary to expand and deploy the airbag group 2. Means a state.

In the present embodiment, the case where the airbag group 2 is accommodated by using the structure (frame F) of the seat S is shown, but the airbag module in which the airbag group 2 is modularized is inside the seat back. It may be arranged in.

Further, as shown in FIGS. 1 (A) and 1 (B), in the occupant restraint device 1 according to the present embodiment, the right occupant restraint device 1R that expands and deploys the airbag group 2 on the right side portion of the occupant M The left occupant restraint device 1L for expanding and deploying the airbag group 2 is provided on the left side portion of the occupant M. The right occupant restraint device 1R is arranged on the right side surface of the seat S, and the left occupant restraint device 1L is arranged on the left side surface of the seat S. The "side portion" of the occupant M means a side portion of the body, chest, or arm.

For example, as shown in FIG. 1A, by expanding and deploying the airbag group 2 on the right side of the occupant M, the movement of the occupant M to the right can be restrained and the occupant M is seated. If the position is shifted to the right, it can be pushed back to the normal position.

Further, as shown in FIG. 1B, by expanding and deploying the airbag group 2 on the left side portion of the occupant M, the movement of the occupant M to the left can be restrained and the occupant M is seated. If the position is shifted to the left, it can be pushed back to the normal position.

In this way, by using the occupant restraint device 1 to restrain the movement of the occupant M and to correct the seating position of the occupant M, a position suitable for another airbag device such as a front collision airbag device is used. The occupant M can be moved or restrained.

According to the occupant restraint device 1 according to the first embodiment described above, the occupant M is restrained by the airbag group 2 configured to transmit the reaction force R between the adjacent airbags. The airbag group 2 having a curved trajectory from the occupant M to the occupant M can be easily expanded and deployed, and the airbag can be easily expanded and deployed to a position suitable for protecting the occupant M. The power can be improved.

Further, since the occupant restraint device 1 is normally housed in the seat S, it does not obstruct the rear view, does not give the occupant M a feeling of cramping or oppression, and is safe to touch. It also has the effect of being there.

The first modification of the occupant restraint device 1 shown in FIG. 2A is a suture of a part of the tether group 3. Specifically, the third tether 33 is sewn to the second tether 32 by the suture portion 37. With such a configuration, the second tether 32 and the third tether 33 can be put together, and the entanglement of the second tether 32 and the third tether 33 can be suppressed.

In the second modification of the occupant restraint device 1 shown in FIG. 2B, the reaction force transmitting member 5 is arranged between the adjacent airbags. Specifically, a plate-shaped reaction force transmitting member 5 is arranged between the first airbag 21 and the second airbag 22. When the reaction force transmission member 5 is arranged, the guide member 26 may be arranged over the second airbag 22 to the third airbag 23.

By arranging the reaction force transmitting member 5, the reaction force R can be transmitted between the first airbag 21 and the second airbag 22 via the reaction force transmitting member 5, and the airbag group 2 can transmit the reaction force R. It can assist in expansion and deployment. Further, since the reaction force R can be transmitted at a place other than the contact point between the first airbag 21 and the second airbag 22, the degree of freedom in designing the arrangement and shape of the airbag can be improved.

The reaction force transmitting member 5 is rotatably arranged in the structure of the seat S such as the frame F so that the reaction force transmitting member 5 can rotate according to the expansion and deployment of the airbag group 2, for example. Further, in the first airbag 21 shown in the second modification, since the reaction force transmitting member 5 is arranged between the first tether 31 and the fixing member 36, the frame F is formed by another fixing member 36'. It may be fixed to.

In the third modification of the occupant restraint device 1 shown in FIG. 3, the airbag group 2 of the right occupant restraint device 1R and the airbag group 2 of the left occupant restraint device 1L are simultaneously expanded and deployed. In this way, by sandwiching the occupant M from both the left and right sides by the airbag group 2, the movement of the occupant M in the left-right direction can be effectively restrained.

Therefore, it is possible to improve the binding force against an offset frontal collision or an oblique collision in which acceleration acts in the vehicle width direction, and also to improve the binding force against a frontal collision having a large acceleration in the vehicle length direction.

In the above-described embodiment (including the modified example), the occupant restraint devices 1 are arranged on the left and right sides of the occupant M, but depending on the type of the seat S (driver's seat, passenger seat, rear seat, etc.), the occupant The occupant restraint device 1 may be arranged only on the left and right sides of the M. Further, even if the balance of the internal pressure between the airbag group 2 of the right occupant restraint device 1R and the airbag group 2 of the left occupant restraint device 1L is changed to restrain the occupant M while moving it in any one direction. Good.

Next, the seat S provided with the occupant restraint device 1 described above will be described. Here, FIG. 4 is a side view showing a sheet according to an embodiment of the present invention, (A) shows a first embodiment, and (B) shows a second embodiment. 5A and 5B are side views showing a sheet according to an embodiment of the present invention, in which FIG. 5A shows a third embodiment and FIG. 5B shows a fourth embodiment. 6A and 6B are side views showing a sheet according to an embodiment of the present invention, in which FIG. 6A shows a fifth embodiment and FIG. 6B shows a sixth embodiment. FIG. 7 is a side view showing a sheet according to a seventh embodiment of the present invention.

In each figure, the seat S includes a seat portion S1 on which the occupant M is seated and a seat back S2 that supports the back portion of the occupant M, similarly to a general vehicle seat. For convenience of explanation, the seat S and the occupant M are shown by a alternate long and short dash line.

As shown in FIG. 4A, the seat S according to the first embodiment has the occupant restraint device 1 arranged so that the airbag group 2 expands and deploys at a position corresponding to the side portion around the abdomen of the occupant M. It was done.

As shown in FIG. 4B, the seat S according to the second embodiment has the occupant restraint device 1 so as to expand and deploy the airbag group 2 to a position corresponding to the side portion around the shoulder portion of the occupant M. It is the one that was placed.

As shown in FIG. 5A, the seat S according to the third embodiment has the occupant restraint device 1 arranged so that the airbag group 2 expands and expands at a position corresponding to the thigh of the occupant M. Is. In particular, as shown in the figure, the waist portion of the occupant M can be restrained by expanding and deploying the airbag group 2 at the base portion of the thigh portion. In the present embodiment, the occupant restraint device 1 is housed in the side surface portion of the seat portion S1. The airbag group 2 is composed of, for example, first airbags 21 to fourth airbags 24.

As shown in FIG. 5B, the seat S according to the fourth embodiment has the occupant restraint device 1 arranged so that the airbag group 2 expands and expands at a position corresponding to the shoulder portion of the occupant M. is there. In the present embodiment, the occupant restraint device 1 is housed in the upper part of the seat back S2. The airbag group 2 is composed of, for example, first airbags 21 to fifth airbags 25. According to the seat S according to the present embodiment, the airbag group 2 can restrain the movement of the occupant M in the front-rear direction.

As shown in FIG. 6A, the seat S according to the fifth embodiment has a plurality of occupant restraint devices so that the airbag group 2 expands and deploys at positions corresponding to the side portion and the thigh portion of the occupant M. 1 is arranged. As shown in the figure, the airbag group 2 corresponding to the thigh may be expanded and deployed at a position corresponding to the waist of the occupant M by arranging the airbag group 2 at the base of the thigh.

As shown in FIG. 6B, the seat S according to the sixth embodiment has a plurality of seats so as to expand and deploy the airbag group 2 at positions corresponding to the side portion, the thigh portion, and the shoulder portion of the occupant M. The occupant restraint device 1 is arranged. As shown in the figure, the airbag group 2 corresponding to the thigh may be expanded and deployed at a position corresponding to the waist of the occupant M by arranging the airbag group 2 at the base of the thigh.

Like the seats S according to the first to sixth embodiments described above, the airbag group 2 is arbitrarily arranged at the side portion, the shoulder portion, the thigh portion, or a position corresponding to a plurality of these portions of the occupant M. can do.

Further, as shown in FIGS. 7A and 7B, the seat S may have a shock absorber 6 that tilts the seatback S2 forward in the event of a vehicle collision. The shock absorber 6 is composed of, for example, a torsion bar arranged on the rotation axis of the seat back S2. Such a torsion bar is a component that twists around a rotation axis when a load of a predetermined threshold value or more is applied. The configuration of the shock absorber 6 is merely an example, and is not limited to the configuration shown in the figure.

The occupant M, who is restrained by the seat belt 7 by the seat belt 7, has his upper body thrown forward by inertial force at the time of a vehicle collision. In accordance with this, the seat back S2 is tilted forward to the seat back S2. The airbag group 2 of the arranged occupant restraint device 1 can be made to follow the movement of the occupant M, and the restraint force of the occupant M can be maintained. Further, the protected area of the airbag group 2 can be reduced, and the airbag group 2 can be miniaturized.

Next, an example of the occupant restraint device 1 used for the seat S according to the third embodiment will be described with reference to FIGS. 8 (A) and 8 (B). Here, FIG. 8 is an overall configuration diagram showing a occupant restraint device according to a second embodiment of the present invention, in which (A) shows a normal time and (B) shows a time when expansion and deployment are completed.

The occupant restraint device 1 shown in FIGS. 8 (A) and 8 (B) is arranged on the side surface of the seat portion S1 of the seat S. Specifically, the occupant restraint device 1 is fixed to the frame F built in the seat portion S1. In FIG. 8B, for convenience of explanation, the first airbag 21 to the fifth airbag 25 and the first tether 31 to the fifth tether 35 are shown by a alternate long and short dash line. Further, in FIG. 8B, for convenience of explanation, the figure of the gas supply device is omitted.

The illustrated occupant restraint device 1 fixes the airbag group 2 (first airbag 21 to fifth airbag 25), the tether group 3 (first tether 31 to fifth tether 35), and the tether group 3. It includes a member 36, a reaction force transmitting member 5 for transmitting a reaction force between the first airbag 21 and the second airbag 22, and a casing 8 for accommodating the folded airbag group 2.

Although not shown, the guide member 26 may be arranged in the airbag group 2, or the suture portion 37 may be formed in the tether group 3. Further, in the present embodiment, the configuration in which the vehicle restraint device 1 is modularized is shown, but the casing 8 may be omitted and the vehicle restraint device 1 may be directly arranged in the structure of the seat S.

The reaction force transmitting member 5 has a plate member 51 forming a lid of the casing 8 and a link mechanism 52 having one end fixed to the bottom of the casing 8 and the other end fixed to the back surface of the plate member 51. .. Normally, the opening of the casing 8 is sealed by the plate member 51. At this time, the link mechanism 52 is in a contracted state.

When the expansion gas is supplied to the first airbags 21 to the fifth airbags 25 by the gas supply device, each airbag expands and expands, pushing the plate member 51 sideways and extending the link mechanism 52. The first airbag 21 and the second airbag 22 are pressed against the plate member 51, and the reaction force R generated in the second airbag 22 is transmitted to the first airbag 21 via the plate member 51.

By using the reaction force transmitting member 5, it is possible to restrict the lateral movement of the first airbag 21 and the second airbag 22, and to the upper side of the third airbag 23 to the fifth airbag 25. Can assist in the expansion and deployment of.

Next, an example of the occupant restraint device 1 used for the seat S according to the fourth embodiment will be described with reference to FIGS. 9 (A) and 9 (B). Here, FIG. 9 is an overall configuration diagram showing a occupant restraint device according to a third embodiment of the present invention, (A) showing a normal time, and (B) showing a time when expansion and deployment are completed.

The occupant restraint device 1 shown in FIGS. 9 (A) and 9 (B) is arranged above the seat back S2 of the seat S. Specifically, the occupant restraint device 1 is fixed to the frame F built in the seat back S2. In FIG. 9B, for convenience of explanation, the first airbag 21 to the fifth airbag 25 and the first tether 31 to the fifth tether 35 are shown by a alternate long and short dash line.

The illustrated occupant restraint device 1 fixes the airbag group 2 (first airbag 21 to fifth airbag 25), the tether group 3 (first tether 31 to fifth tether 35), and the tether group 3. The reaction force that transmits the reaction force between the member 36, the gas supply device 4 that supplies gas to the airbag group 2, the support member 9 that supports them, and the first airbag 21 and the second airbag 22. It includes a transmission member 5. Although not shown, the guide member 26 may be arranged in the airbag group 2, or the suture portion 37 may be formed in the tether group 3.

The support member 9 has, for example, a structure in which two plate members are formed in a substantially T shape, and is fixed to the frame F. A gas supply device 4, a fixing member 36, and a reaction force transmission member 5 are connected to the support member 9, and the airbag group 2 is arranged in a folded state on a flat surface portion of the support member 9. At this time, a wrapping sheet that retains the folded shape of the airbag group 2 may be used. The configuration of the support member 9 is merely an example, and is not limited to the configuration shown in the figure.

The reaction force transmitting member 5 is rotatably arranged between the first airbag 21 and the second airbag 22. Therefore, as shown in FIG. 9A, the first airbag 21 and the remaining airbags (second airbags 22 to fifth airbags 25) are folded separately.

When the expansion gas is supplied to the first airbags 21 to the fifth airbags 25 by the gas supply device 4, each airbag breaks through the seat back S2 and expands and expands to the outside of the seat S, and is countered by the first airbag 21. The force transmitting member 5 is rotated to support the second airbag 22 from behind. With such a configuration, it is possible to assist the forward expansion and deployment of the third airbag 23 to the fifth airbag 25.

The present invention is not limited to the above-described embodiment, and for example, the occupant restraint device according to the above-described embodiment (including a modification) can be applied not only to the seat for the front seat of the vehicle but also to the seat for the rear seat. It goes without saying that various changes can be made without departing from the spirit of the present invention, such as being applicable.

1 Crew restraint device 2 Airbag group 3 Tether group 4 Gas supply device 5 Reaction force transmission member 6 Shock absorber 7 Seatbelt 8 Casing 9 Support member 21 First airbag 22 Second airbag 23 Third airbag 24 Fourth air Bag 25 Fifth airbag 26 Guide member 27 Wrapping sheet 31 First tether 32 Second tether 33 Third tether 34 Fourth tether 35 Fifth tether 36 Fixing member 37 Suture portion 41 Gas supply path 51 Plate member 52 Link mechanism 61 Gear 62 rack 63 drive unit

Claims (7)

In the occupant restraint device that restrains the occupant on the seat
An airbag group composed of a plurality of airbags that are normally arranged inside the seat and can be expanded and deployed outside the seat at a predetermined timing.
A tether group composed of a plurality of tethers having one end connected to each of the plurality of airbags and the other end fixed to the seat.
A gas supply device for supplying gas to the plurality of airbags is provided.
The airbag group is configured to transmit a reaction force between adjacent airbags when the expansion and deployment is completed.
An occupant restraint device characterized in that. The occupant restraint device according to claim 1, wherein the plurality of airbags are not communicated with each other and are configured to be individually inflatable and deployable. The occupant restraint device according to claim 1, further comprising a band-shaped guide member arranged over the surfaces of the plurality of airbags. The occupant restraint device according to claim 1, further comprising a reaction force transmitting member arranged between adjacent airbags. The occupant restraint device according to claim 1, wherein the airbag group is arranged at a position corresponding to a side portion, a shoulder portion, a waist portion, a thigh portion, or a plurality of these portions of the occupant. The occupant restraint device according to claim 1, wherein the seat has a shock absorber that tilts the seat back forward in the event of a vehicle collision. A seat comprising a seat on which an occupant sits and a seat back for supporting the back of the occupant, the seat comprising the occupant restraint device according to any one of claims 1 to 6.