JP2018086990A - Occupant restraint device and seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an occupant restraint device storable ordinarily in a seat, and capable of improving restraint of a crewman; and to provide the seat.SOLUTION: An occupant restraint device 1 includes an air-bag group 2 arranged ordinarily in a seat S, and constituted of a plurality of air bags 21-23 expandable/spreadable to the outside of the seat S at a prescribed timing, a tether group 3 constituted of a plurality of tethers whose each one end is connected to each of the plurality of air bags 21-23, and whose each other end is fixed to the seat S, and a gas supply device 4 for supplying gas into the plurality of air bags 21-23. The air-bag group 2 is constituted so as to transfer reactive force R between adjacent air bags upon finish of expansion/spreading.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an occupant restraint device and a seat, and more particularly to an occupant restraint device excellent in 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 relative to the seat can be suppressed. An occupant restraint device that restrains an occupant on a seat has already been proposed (see Patent Documents 1 and 2).

  The occupant restraint device described in Patent Literature 1 increases a protruding amount of the side support with respect to the backrest, and a pair of left and right side supports provided on the seat back constituting the vehicle seat so that the seated occupant can be supported from the side. The right side airbag and the left side airbag to be obtained, and the side support overhang amount that can suppress the relative displacement of the occupant in the vehicle width direction relative to the vehicle seat due to the acceleration in the vehicle width direction when an offset collision is detected or predicted And a control device that controls the right airbag or the left airbag.

  Moreover, the passenger | crew restraint apparatus described in patent document 2 is equipped with the upper part support member which restrains the passenger | crew's shoulder part seated on the seat from upper direction, and the side part support member which restrains from the side.

JP 2010-64632 A JP 2004-34837 A

  The occupant restraint device described in Patent Document 1 described above controls the amount of extension of the side support by inflating the airbag embedded in the seat back in the seat back. There is a problem that the effect is small with respect to a collision (for example, an oblique collision or a frontal collision with a small offset amount) with a low restraining force and a small amount of movement in the vehicle width direction.

  Further, in the occupant restraint device described in Patent Document 2, the support member has a multi-joint mechanism, and remains in the upper part of the seat even in the retracted state, which hinders the rear view. , Have problems such as giving a tight feeling and pressure. Moreover, when a passenger | crew moves ahead, there also exists a problem of contacting with a support member at the time of rebound.

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

  According to the present invention, in an occupant restraint device that restrains an occupant on a seat, an airbag group that is configured by a plurality of airbags that are normally disposed in the seat and can be inflated 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. An occupant restraint device is provided, wherein the airbag group is configured to transmit a reaction force between adjacent airbags when inflation and deployment are completed.

  In addition, according to the present invention, in a seat including a seat portion on which an occupant is seated and a seat back that supports the back of the occupant, the occupant restraint device restrains the occupant to the seat, and normally the seat An airbag group configured by a plurality of airbags disposed inside and capable of inflating and deploying 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 tether group including a plurality of tethers and a gas supply device that supplies gas to the plurality of airbags, and the airbag group transmits a reaction force between adjacent airbags upon completion of inflation and deployment. There is provided a seat characterized by having an occupant restraint device configured as described above.

  In the occupant restraint device and the seat described above, the plurality of airbags may be configured to be individually inflatable and deployable without being communicated.

  Moreover, you may have the strip | belt-shaped guide member arrange | positioned over the surface of the said some airbag.

  Moreover, you may have the reaction force transmission member arrange | positioned between adjacent airbags.

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

  The seat may include a shock absorber that tilts the seat back forward in the event of a vehicle collision.

  According to the above-described occupant restraint device and seat according to the present invention, since the occupant is restrained by the airbag group configured to transmit the reaction force between the adjacent airbags, from the seat toward the occupant. The airbag group having a curved track can be easily inflated and deployed, and the airbag can be easily inflated and deployed to a position suitable for protecting the occupant, thereby improving the occupant's restraining force.

  In addition, since such an occupant restraint device is normally housed in the seat, it does not interfere with the rear view, does not give the occupant a feeling of cramping or pressure, and is safe to contact. Also have.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole block diagram which shows the passenger | crew restraint apparatus which concerns on 1st embodiment of this invention, (A) has shown the time of the action | operation of the right side passenger | crew restraint apparatus, and (B) has shown the time of the action | operation of the left side passenger restraint apparatus. It is a figure which shows the modification of the passenger | crew restraint apparatus shown in FIG. 1, (A) has shown the 1st modification, (B) has shown the 2nd modification. It is a figure which shows the 3rd modification of the passenger | crew restraint apparatus shown in FIG. It is a side view which shows the sheet | seat which concerns on embodiment of this invention, (A) has shown 1st embodiment, (B) has shown 2nd embodiment. It is a side view which shows the sheet | seat which concerns on embodiment of this invention, (A) has shown 3rd embodiment, (B) has shown 4th embodiment. It is a side view which shows the sheet | seat which concerns on embodiment of this invention, (A) has shown 5th embodiment, (B) has shown 6th embodiment. It is a side view which shows the sheet | seat which concerns on 7th embodiment of this invention. It is a whole block diagram which shows the passenger | crew restraint apparatus which concerns on 2nd embodiment of this invention, (A) has shown normal time, (B) has shown the time of completion | finish of expansion | deployment. It is a whole block diagram which shows the passenger | crew restraint apparatus which concerns on 3rd embodiment of this invention, (A) has shown normal time, (B) has shown the time of completion | finish of expansion | deployment.

  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 the occupant restraint device according to the first embodiment of the present invention, wherein (A) is when the right occupant restraint device is in operation, and (B) is when the left occupant restraint device is in operation. , Shows. 2A and 2B are diagrams showing a modification of the occupant restraint device shown in FIG. 1, wherein FIG. 2A shows a first modification and FIG. 2B shows a second modification. FIG. 3 is a view showing a third modification of the occupant restraint device shown in FIG.

  An occupant restraint device 1 according to the first embodiment of the present invention is an occupant restraint device that restrains an occupant M on a seat S as described in, for example, FIGS. 1A and 1B. Normally, the airbag group 2 is configured by the first airbag 21 to the third airbag 23 which are arranged in the seat S and can be inflated and deployed outside the seat S at a predetermined timing, and one end of the airbag 21 is the first airbag 21. Gas is supplied to the tether group 3 constituted by 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 to the first airbag 21 to the third airbag 23. The airbag group 2 is configured to transmit a reaction force R between adjacent airbags when the inflation and deployment are completed.

  The seat S generally includes a seat portion on which the occupant M is seated and a seat back that supports the back of the occupant M. In FIG. 1A to FIG. 3, only the seat back is illustrated by a one-dot chain line for convenience of explanation. Moreover, in this embodiment, the case where the passenger | crew restraint apparatus 1 is arrange | positioned to the flame | frame F arrange | positioned in a seat back is illustrated. In FIGS. 1A to 3, for the occupant M, only the torso is illustrated by a one-dot chain line.

  For example, as illustrated in FIG. 1A, the airbag group 2 includes 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 according to the size (capacity) and shape of the airbag, but is preferably approximately three or more.

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

  Here, the first airbag 21 to the third airbag 23 are configured not to communicate with each other but to be individually inflatable and deployable. That is, the 1st airbag 21-the 3rd airbag 23 comprise the bag body completed respectively independently, and inflation gas is supplied to the 1st airbag 21-the 3rd airbag 23 separately.

  Moreover, you may make it arrange | position the strip | belt-shaped guide member 26 on the surface of the 1st airbag 21-the 3rd airbag 23. FIG. By arranging the guide member 26 on the surface of the airbag group 2, the inflated and deployed shapes of the first airbag 21 to the third airbag 23 can be stabilized. The guide member 26 can be omitted if necessary.

  As shown in FIG. 1A, for example, the tether group 3 includes a first tether 31 connected to the first airbag 21, a second tether 32 connected to the second airbag 22, and a third airbag. 23, 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 each of the first tether 31 to the third tether 33 is connected to the corresponding first airbag 21 to third airbag 23, and the other ends of the first tether 31 to third tether 33 are fixed to the frame F. 36 is fixed. The first tether 31 to the third tether 33 may have a narrow string shape or a wide band shape. The lengths of the first tether 31 to the third tether 33 can be arbitrarily designed according to the inflated and deployed shape of the airbag group 2.

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

  Accordingly, the reaction force R generated when the third airbag 23 comes into contact with the occupant M at the time of inflation and deployment is transmitted from the third airbag 23 to the second airbag 22 to the first airbag 21, and finally the seat S The structure (including the frame F, cushion material, etc.) is received.

  The gas supply device 4 is configured by any of an inflator, a gas generator, a gas cylinder, an air compressor, and the like, for example. When it is desired to inflate and deploy the airbag group 2 instantaneously at the time of a vehicle collision, the gas supply device 4 is preferably constituted by pyrotechnics such as an inflator and a gas generator. On the other hand, when it is desired to inflate and deploy the airbag group 2 in advance in the event of an emergency such as a vehicle collision, a gas cylinder or an air compressor that can control the timing and flow rate of supplying the inflation gas is used. It is preferable.

  For example, the gas supply device 4 is disposed in the seat back of the seat S, and includes a gas supply path 41 that supplies inflation gas to each of the first airbag 21 to the third airbag 23. The gas supply path 41 connected to each of the first airbag 21 to the third airbag 23 is, for example, a rubber tube, a cylindrical member made of the same base fabric as the airbag.

  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 through the inside of the first tether 31 to the third tether 33. The first airbag 21 to the third airbag 23 may be connected, or the first tether 31 to the third tether 33 themselves 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 accommodated in the recess of the frame F of the seat S. At this time, the airbag group 2 may be covered with the wrapping sheet 27 in order to hold the folded state. In the present embodiment, the “normal time” means a state where no emergency such as a vehicle collision occurs, a state where no emergency such as a vehicle collision is predicted, or the airbag group 2 need not be inflated and deployed. Means state.

  In the present embodiment, the case where the airbag group 2 is accommodated using the structure (frame F) of the seat S is illustrated. However, the airbag module in which the airbag group 2 is modularized is included in the seat back. You may make it arrange | position to.

  Further, as shown in FIGS. 1 (A) and 1 (B), in the occupant restraint device 1 according to the present embodiment, a right occupant restraint device 1R that inflates and deploys the airbag group 2 on the right side of the occupant M; The left occupant restraining device 1L for inflating and deploying the airbag group 2 is provided on the left side of the occupant M. The right occupant restraint device 1R is disposed on the right side surface of the seat S, and the left occupant restraint device 1L is disposed on the left side surface of the seat S. In addition, the “side part” of the occupant M means a side part of the torso, chest, or arm.

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

  Further, as shown in FIG. 1 (B), the airbag group 2 is inflated and deployed on the left side of the occupant M, so that the movement of the occupant M in the left direction can be restrained and the occupant M is seated. When the position is shifted to the left, it can be pushed back to the normal position.

  As described above, by using the occupant restraint device 1 to restrain the movement of the occupant M or to correct the seating position of the occupant M, a position suitable for another airbag device such as a front impact airbag device. 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 adjacent airbags. The airbag group 2 having a track curved toward the passenger M can be easily inflated and deployed, and the airbag can be easily inflated and deployed to a position suitable for protecting the passenger M. The power can be improved.

  Further, since the occupant restraint device 1 is normally housed in the seat S, the occupant M does not interfere with the rear view, does not give the occupant M a feeling of cramping or pressure, and is safe to contact. It also has an effect.

  A first modification of the occupant restraint device 1 shown in FIG. 2A is obtained by sewing a part of the tether group 3. Specifically, the third tether 33 is stitched to the second tether 32 by the stitching portion 37. With this configuration, the second tether 32 and the third tether 33 can be combined, and the entanglement of the second tether 32 and the third tether 33 can be suppressed.

  In the second modified example of the passenger restraint apparatus 1 shown in FIG. 2 (B), the reaction force transmission member 5 is arranged between adjacent airbags. Specifically, the plate-like reaction force transmission member 5 is disposed between the first airbag 21 and the second airbag 22. When the reaction force transmission member 5 is disposed, the guide member 26 may be disposed across the second airbag 22 to the third airbag 23.

  By disposing the reaction force transmission member 5, the reaction force R can be transmitted between the first airbag 21 and the second airbag 22 via the reaction force transmission member 5. Expansion and deployment can be assisted. 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 transmission member 5 is rotatably arranged on the structure of the seat S such as the frame F so that it can be rotated in accordance with the inflation and deployment of the airbag group 2. Further, in the first airbag 21 shown in the second modified example, the reaction force transmission member 5 is disposed between the first tether 31 and the fixing member 36. Therefore, the frame F is separated by another fixing member 36 '. You may make it fix to.

  The third modification of the occupant restraint device 1 shown in FIG. 3 is obtained by inflating and deploying the airbag group 2 of the right occupant restraint device 1R and the airbag group 2 of the left occupant restraint device 1L at the same time. In this manner, by sandwiching the occupant M from the left and right side portions 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 restraining force against the offset frontal collision and the oblique collision in which the acceleration acts also in the vehicle width direction, and it is possible to improve the restraining force against the frontal collision with a large acceleration in the vehicle length direction.

  In the above-described embodiment (including modifications), the occupant restraint device 1 is disposed on both the left and right sides of the occupant M. However, depending on the type of the seat S (driver seat, passenger seat, rear seat, etc.) The occupant restraint device 1 may be arranged only on the left and right sides of M. Further, by changing the balance of 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, the occupant M may be restrained while moving in 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 the seat according to the embodiment of the present invention, in which (A) shows the first embodiment and (B) shows the second embodiment. FIG. 5 is a side view showing a sheet according to an embodiment of the present invention, in which (A) shows a third embodiment and (B) shows a fourth embodiment. FIG. 6 is a side view showing a sheet according to an embodiment of the present invention, in which (A) shows a fifth embodiment and (B) shows a sixth embodiment. FIG. 7 is a side view showing a seat according to the seventh embodiment of the present invention.

  In each figure, the seat S includes a seat S1 on which an occupant M is seated and a seat back S2 that supports the back of the occupant M, like a general vehicle seat. For convenience of explanation, the seat S and the occupant M are indicated by a one-dot chain line.

  In the seat S according to the first embodiment, as shown in FIG. 4A, the occupant restraint device 1 is arranged so that the airbag group 2 is inflated and deployed at a position corresponding to the side portion around the abdomen of the occupant M. It is a thing.

  As shown in FIG. 4B, the seat S according to the second embodiment has the occupant restraint device 1 so that the airbag group 2 is inflated and deployed at a position corresponding to the side portion around the shoulder of the occupant M. It is arranged.

  In the seat S according to the third embodiment, as shown in FIG. 5A, the occupant restraint device 1 is arranged so that the airbag group 2 is inflated and deployed at a position corresponding to the thigh of the occupant M. It is. In particular, as shown in the figure, the waist of the occupant M can be restrained by inflating and deploying the airbag group 2 at the base of the thigh. In this embodiment, the passenger | crew restraint apparatus 1 is accommodated in the side part of seat part S1. The airbag group 2 includes, for example, a first airbag 21 to a fourth airbag 24.

  In the seat S according to the fourth embodiment, the occupant restraint device 1 is arranged so that the airbag group 2 is inflated and deployed at a position corresponding to the shoulder of the occupant M, as shown in FIG. 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, a first airbag 21 to a fifth airbag 25. According to the seat S according to the present embodiment, the movement of the occupant M in the front-rear direction can be restricted by the airbag group 2.

  As shown in FIG. 6 (A), the seat S according to the fifth embodiment includes a plurality of occupant restraint devices such that the airbag group 2 is inflated and deployed at positions corresponding to the side and thigh of the occupant M. 1 is arranged. The airbag group 2 corresponding to the thigh may be inflated and deployed at a position corresponding to the waist of the occupant M by being disposed at the base of the thigh as shown.

  As shown in FIG. 6B, the seat S according to the sixth embodiment includes a plurality of airbag groups 2 inflated and deployed at positions corresponding to the side, thigh, and shoulders of the occupant M. The occupant restraint device 1 is arranged. The airbag group 2 corresponding to the thigh may be inflated and deployed at a position corresponding to the waist of the occupant M by being disposed at the base of the thigh as shown.

  As in the seat S according to the first to sixth embodiments described above, the airbag group 2 is arbitrarily disposed at a position corresponding to the side, shoulder, thigh, or a plurality of these parts 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 seat back S2 forward in the event of a vehicle collision. The shock absorber 6 is configured by, for example, a torsion bar disposed on the rotation shaft 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 illustrated configuration.

  The occupant M restrained by the seat S by the seat belt 7 throws the upper body forward by an inertial force at the time of a vehicle collision. The airbag group 2 of the occupant restraint device 1 arranged can follow the movement of the occupant M, and the restraint force of the occupant M can be maintained. Moreover, the protection area of the airbag group 2 can be reduced, and the airbag group 2 can be downsized.

  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 an occupant restraint device according to the second embodiment of the present invention, in which (A) shows a normal time and (B) shows a time when inflation and deployment are completed.

  The occupant restraint device 1 shown in FIGS. 8A and 8B is arranged on the side surface of the seat S1 of the seat S. Specifically, the occupant restraint device 1 is fixed to a frame F built in the seat 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 indicated by a one-dot chain line. In FIG. 8B, the gas supply apparatus is not shown for convenience of explanation.

  The illustrated occupant restraint device 1 includes an airbag group 2 (first airbag 21 to fifth airbag 25), a tether group 3 (first tether 31 to fifth tether 35), and a fixing that fixes the tether group 3. A member 36, a reaction force transmission member 5 that transmits a reaction force between the first airbag 21 and the second airbag 22, and a casing 8 that houses the folded airbag group 2 are provided.

  Although not shown, the guide member 26 may be disposed in the airbag group 2, or the stitching portion 37 may be formed in the tether group 3. Moreover, in this embodiment, although the structure which modularized the vehicle restraint apparatus 1 is shown in figure, the structure which abbreviate | omits the casing 8 and arrange | positions the vehicle restraint apparatus 1 directly to the structure of the sheet | seat S may be sufficient.

  The reaction force transmission member 5 includes a plate member 51 constituting 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 inflation gas is supplied to the first airbag 21 to the fifth airbag 25 by the gas supply device, each airbag is inflated and deployed, pushing the plate member 51 to the side, and the link mechanism 52 extending. 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 such a reaction force transmission member 5, the lateral movement of the first airbag 21 and the second airbag 22 can be restricted, and the third airbag 23 to the fifth airbag 25 are moved upward. Can be expanded and deployed.

  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 an occupant restraint device according to the third embodiment of the present invention, in which (A) shows a normal time and (B) shows a time when inflation and deployment are completed.

  The occupant restraint device 1 shown in FIGS. 9A and 9B is arranged on the upper part of the seat back S2 of the seat S. FIG. Specifically, the occupant restraint device 1 is fixed to a 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 indicated by a one-dot chain line.

  The illustrated occupant restraint device 1 includes an airbag group 2 (first airbag 21 to fifth airbag 25), a tether group 3 (first tether 31 to fifth tether 35), and a fixing that fixes the tether group 3. Reaction force that transmits 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. And a transmission member 5. Although not shown, the guide member 26 may be disposed in the airbag group 2, or the stitching portion 37 may be formed in the tether group 3.

  The support member 9 has, for example, a configuration in which two plate members are formed in a substantially T shape, and is fixed to the frame F. The gas supply device 4, the fixing member 36, and the reaction force transmission member 5 are connected to the support member 9, and the airbag group 2 is arranged in a folded state on the flat portion of the support member 9. At this time, a wrapping sheet that holds 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 illustrated configuration.

  The reaction force transmission member 5 is rotatably disposed 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 airbag 22 to fifth airbag 25) are folded separately.

  When inflation gas is supplied to the first airbag 21 to the fifth airbag 25 by the gas supply device 4, each airbag breaks through the seat back S <b> 2 and is inflated and deployed out of the seat S, and is counteracted by the first airbag 21. The force transmission member 5 is rotated to support the second airbag 22 from the rear. Such a configuration can assist in inflating and deploying the third airbag 23 to the fifth airbag 25 forward.

  The present invention is not limited to the above-described embodiment. For example, the occupant restraint device according to the above-described embodiment (including the modified example) is applied not only to the front seat for the vehicle but also to the rear seat. Needless to say, various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Crew restraint device 2 Air bag group 3 Tether group 4 Gas supply device 5 Reaction force transmission member 6 Shock absorber 7 Seat belt 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 Lapping sheet 31 First tether 32 Second tether 33 Third tether 34 Fourth tether 35 Fifth tether 36 Fixing member 37 Sewing part 41 Gas supply path 51 Plate member 52 Link mechanism 61 Gear 62 Rack 63 Drive unit

Claims (7)

In an occupant restraint device that restrains an occupant to a seat,
An airbag group composed of a plurality of airbags that are normally arranged in the seat and can be inflated 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,
The airbag group is configured to transmit a reaction force between adjacent airbags upon completion of inflation and deployment.
An occupant restraint device.   The occupant restraint device according to claim 1, wherein the plurality of airbags are configured not to communicate with each other but to be individually inflatable and deployable.   The occupant restraint device according to claim 1, further comprising a strip-shaped guide member disposed over the surfaces of the plurality of airbags.   The occupant restraint device according to claim 1, further comprising a reaction force transmission member disposed between adjacent airbags.   2. The occupant restraint device according to claim 1, wherein the airbag group is disposed at a position corresponding to a side portion, a shoulder portion, a waist portion, a thigh portion, or a plurality of portions of the occupant.   The occupant restraint device according to claim 1, wherein the seat includes a shock absorber that tilts a seat back forward in a vehicle collision. A seat comprising: a seat portion on which an occupant is seated; and a seat back that supports a back portion of the occupant, the occupant restraint device according to any one of claims 1 to 6 being provided.