JP2007245799A - Occupant crash protection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To favorably arrange an arresting member in correspondence with existence of an occupant and a seating position in adopting it to a seat for more than three occupants by constraining movement of the occupants in collision of the vehicle. <P>SOLUTION: The seat 1 is a bench seat for riding capacity of three. An airbag storage part 5a is partitioned on a seta back part 5 of the seat 1, and the airbag storage part 5a stores an airbag device. Additionally, a head airbag device 60 and a head airbag device 61 are provided on a head rest 6 of the seat 1. Furthermore, first to third infrared ray sensors 40 to 42 are buried in the seat back part 5. Which of the airbag airbag the airbag device 50 furnishes, the head airbag the head airbag device 60 furnishes and the head airbag the head airbag device furnishes to be developed and expanded is decided and is arranged in accordance with existence of the occupants P1 to P3 in each of seating regions E1 to E3 in collision of the vehicle. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an occupant protection device for a vehicle seat on which three or more occupants can be seated.

Conventionally, an occupant protection device that restricts movement of the occupant toward the vehicle inner side in the event of a vehicle collision has been proposed (see Patent Document 1).
The occupant protection device described in Patent Document 1 is configured such that the deployment shape of an airbag as a restraining member that restrains the movement of the occupant is a bell shape, and the airbag housed in the ceiling is a vehicle At the time of a collision, it expands and expands from the ceiling toward the occupant. The occupant protection device described in Patent Document 1 wraps an occupant with a bell-shaped airbag when deployed and inflated, thereby protecting the entire periphery of the occupant during a vehicle collision.
JP 2004-106792 A

  However, in the occupant protection device of Patent Document 1, when it is detected that an impact has been applied to the vehicle, the bell-shaped airbag is deployed and inflated regardless of the seating position of the occupant. When the occupant protection device of Patent Document 1 is applied to a seat having a seating capacity of 3 or more and a plurality of bell-shaped airbags are provided in the vehicle, the case where there is only one occupant sitting on the seat or Even in the case of two people, all airbags mounted on the vehicle at the time of a side collision of the vehicle are always deployed and inflated. Therefore, when the occupant protection device described in Patent Document 1 is applied to three or more seats, the airbag is unnecessarily deployed and inflated even in a region where no occupant is seated.

  Further, in the occupant protection device described in Patent Document 1, when the occupant is seated in such a posture as to straddle a plurality of seating regions, the airbag may not be suitably deployed and inflated by contacting the occupant. Therefore, when the occupant protection device described in Patent Document 1 is applied to a seat having a seating capacity of three or more, it is difficult to suitably deploy and inflate the airbag according to various seating postures of the occupant.

  The present invention restrains the movement of the occupant in the vehicle width direction at the time of a side collision of the vehicle, and suitably arranges a restraining member according to the presence or absence of the occupant and the seating posture even when applied to a seat of three or more persons. An object of the present invention is to provide an occupant protection device.

  In order to achieve the above object, the invention according to claim 1, the seating capacity is 3 or more, and the separable seat has the seating area for the number of seats for seating the passengers corresponding to the seating capacity side by side. Alternatively, a vehicle that is mounted on a vehicle having an integrated seat and that the occupant seated on the seat moves due to an impact at the time of collision with the vehicle and interferes with other occupants, and the vehicle on the opposite side of the vehicle side on the collision side An occupant protection device that protects against interference with a side, and is always accommodated in an accommodating portion provided in the vehicle, and is arranged in a vehicle interior at the time of the collision and restricts movement of the occupant A restraint member, seating detection means for detecting the presence or absence of a passenger in each seating area, or detecting both the presence or absence of a passenger and the seating posture of the passenger, and arranged in the vehicle interior based on the detection result of the seating detection means Restraint A restraining member that is disposed at a position that can contact the occupant in the event of a collision among the plurality of restraining members. Is configured to have an action of relaxing the impact at the time of the contact, and the control means is a space formed between the passengers based on the detection result of the seating detection means, or the vehicle on the passenger and the collision side The gist is to place the restraining member in a space formed between the vehicle side opposite to the side.

  Here, “interfering with another occupant” means that a seated occupant hits another occupant with such a momentum as to receive an impact. Further, “interfering with the opposite vehicle side” means that the seated occupant hits the vehicle side opposite to the collision vehicle side with such a momentum as to receive an impact.

  According to this configuration, at the time of a vehicle collision, the control means determines the restraining member to be arranged in the vehicle interior according to the presence or absence of the occupant and the seating posture of the occupant obtained from the seating detection means, and the determination Based on the result, the restraining member is arranged in the vehicle interior. At this time, the position where the control member arranges the restraint member is a space formed between the occupants or a space formed between the occupant and the vehicle side opposite to the vehicle side on the collision side. In the event of a collision, it is suppressed that the occupant moves into the space formed between the occupants and interferes with other occupants, or the occupant moves to and interferes with the vehicle side opposite to the vehicle side on the collision side. . Further, even when the occupant is seated across a plurality of regions, the restraint member is disposed in the space formed between the vehicle side opposite to the vehicle side on the collision side of the occupant, It is avoided that the restraint member cannot be suitably placed by contacting with the occupant during placement. Further, since the control means determines the restraining member to be placed in the vehicle interior based on the detection result of the seating detection means, even the restraining member corresponding to the seating area where the occupant is not seated at the time of the vehicle collision is wasted. It will never be done. Therefore, the restraining member can be suitably arranged according to the presence or absence of the occupant and the sitting posture.

  The invention according to claim 2 is the invention according to claim 1, wherein the seat is a seat having a seating capacity of N people (where N is a natural number of 3 or more), and the plurality of restraining members are: N-1 buffer restraint members that are disposed between adjacent seating regions and have a buffering action, and are disposed in the seating region between the buffer restraint members that are adjacent to each other, and the buffer restraint restraints are in contact with an occupant. N-2 receiving and restraining members having an action of receiving an impact force applied to the member, and when the occupants are seated adjacent to each other, the control means includes the buffering restraining members between the adjacent occupants. When the occupant is seated in a state where there is a seating area for one or more people between adjacent occupants, the buffer restraint member and the receiving restraint member are placed between the adjacent occupants. Need to be placed To.

  According to this configuration, since the buffering restraint member has a buffering action, it can relax the impact generated when contacting the occupant, and receives and restrains the movement of the buffering restraint members arranged in the adjacent seating regions. Can be suppressed. Therefore, the impact force applied to the occupant due to the side collision of the vehicle can be suitably relaxed.

  According to a third aspect of the present invention, in the second aspect of the present invention, the seat is a seat having a seating capacity of three people, and the buffer restraining member is based on the forward direction of the vehicle. A first restraining member disposed between the right seating region and the central seating region, and the left seating region and the center seating region with respect to the forward direction of the vehicle. The receiving restraining member is disposed between the first restraining member and the second restraining member and in the central seating area, and is in contact with the occupant. The restraint member and a third restraint member having an action of receiving an impact force applied to the second restraint member, and the control means detects the seating of an occupant in all seating areas when the seating detection means detects three seats. The first restraint A member and the second restraining member, and when the seating detection means detects the seating of an occupant in the left and right seating areas and two people are seated, the first restraining member and the second restraining member When the restraint member and the third restraint member are arranged and the seating detection means detects seating of the occupant in the center seating region and the right seating region, A restraint member is disposed, and when the seating detection means detects seating of an occupant in a central seating region and a left seating region and two people are seated, the second restraint member is disposed. And

  According to this configuration, when the seating capacity is applied to a seat of three people, the first restraining member, the second restraining member, and the third restraining member are each a space formed between the passengers or the passenger and the side collision side Since the vehicle is disposed at a position corresponding to a space formed between the vehicle side and the vehicle side opposite to the vehicle side, the restraining member can be suitably disposed at the time of a side collision of the vehicle.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the vehicle is provided with collision detection means for detecting a collision with the vehicle, and the control means is configured to detect the collision detection. The presence / absence of the collision and the direction of the collision are recognized based on the detection result of the means, the seating detection means detects the seating of the occupant in the right seating area, and one person is seated, and the right side of the occupant seated in the collision direction In this case, the first restraining member is disposed, or the first restraining member and the third restraining member are disposed, and the seating detection means detects the seating of the occupant in the left seating region, and one person In the case of sitting on the left side of the occupant seated in the collision direction, the second restraining member is disposed, or the second restraining member and the third restraining member are disposed, and the seating detection means is located at the center seating. Detect the seating of passengers in the area When a person is seated, the second restraint member is disposed when the collision direction is on the right side of the seated occupant, or the second restraint member and the first restraint member are disposed, while the collision direction is seated. The gist is to arrange the first restraining member or the first restraining member and the second restraining member on the left side of the occupant.

  According to this configuration, the control means determines the restraining member to be placed in consideration of the presence or absence of the collision recognized by the collision detection means and the collision direction, and places the restraining member based on the decision result. The control means is formed between the occupant and the vehicle side opposite to the collision side when the seating detection means detects that one occupant is seated at the time of the collision of the vehicle. In addition to disposing the restraining member in the created space, the restraining member is also disposed in the space formed between the passenger and the vehicle side on the collision side. Therefore, the impact force applied to the occupant due to the collision of the vehicle can be relaxed.

  According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the control means is configured such that one occupant is in a posture in which the seating detection means straddles the right seating area and the central seating area. When the seating is detected and the collision direction is on the right side of the seated occupant, the second restraining member and the third restraining member are arranged, and the seating detection means is arranged on the left seating area. When it is detected that one occupant is seated in a posture straddling the central seating area and the collision direction is on the left side of the seated occupant, the first restraining member and the third restraining member are The gist is to arrange them.

According to this configuration, even when the occupant's posture is a special seating posture in which the occupant is seated across the two seating regions, the restraining member can be suitably arranged for the occupant.
According to the invention described in claim 6, in the invention described in any one of claims 1 to 5, the plurality of restraining members are arranged by expanding and expanding in the vehicle interior. The gist is that it is a bag.

  According to this configuration, since the first restraining member, the second restraining member, and the third restraining member are airbags, for example, compared to housing a spherical member that has a buffering action but cannot be folded. Space can be reduced.

  According to the invention of claim 7, in the invention of any one of claims 3 to 5, the first restraining member and the second restraining member are on the upper end side of the backrest portion of the seat. The third restraining member extends in the vertical direction of the vehicle from the upper end side of the seat back portion to the seat portion side of the seat. When the two occupants are seated in the left and right seating areas, the upper bodies of the occupants interfere with each other. The gist is that it is an air bag that protects from air.

  According to this configuration, since the reaction force can be applied to the first restraining member and the second restraining member with only the third restraining member, and the upper body of the occupant can be protected from interfering with each other, the first restraining member can be protected. And it is not necessary to provide separately the member which gives reaction force to the 2nd restraining member, and the member which protects from a passenger | crew's upper body interfere. Therefore, an increase in the number of members can be suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, suitable restraint according to a passenger | crew's seating state can be performed.

Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
In the following description, the forward direction of the vehicle is described as forward, and the rear, upper, lower, left, and right are defined based on the forward direction. In the case of a seat, front, rear, upper, lower, left, and right are defined corresponding to each direction of the vehicle based on the state of the vehicle.

  As shown in FIG. 1, a seat 1 is disposed in a vehicle (not shown). A right side body portion 2 is located on the right side of the seat 1 and a left side body portion 3 is located on the left side of the seat 1.

  The seat 1 is a three-seater seat that extends in the vehicle width direction and is configured so that three passengers can be seated. The seat 1 of the present embodiment is an integrated seat (bench seat) in which the seating capacity is three and the three passengers are seated side by side in the vehicle width direction. The seat 1 includes a seat portion 4, a backrest portion 5, and a headrest 6. The seat portion 4 is formed with three seating regions including a right seating region E1, a middle seating region E2, and a left seating region E3 for seating three passengers to the right, center, and left. When three occupants are seated on the seat 1, spaces S1 and S2 are formed between the occupants. As shown in FIG. 1, the spaces S <b> 1 and S <b> 2 are formed to be large in the upper end side of the backrest portion 5, that is, in a range from the shoulder portion of the occupant to the head portion.

  When the number of passengers seated on the seat 1 is two or one, two people between the right side body part 2 or the left side body part 3 or between passengers depending on the seating position of the passengers A space for one person or one person is formed. For example, when one occupant is seated in the right seating area E1, a space for two occupants is formed between the occupant and the left side body part 3, and the two occupants are seated in the right seat. When seated in the region E1 and the middle seating region E2, a space for one person is formed between the occupant seated in the middle seating region E2 and the left side body part 3. When one occupant is seated in the middle seating area E <b> 2, a space for one person is formed between the occupant and the right side body part 2 and the left side body part 3.

  A first infrared sensor 40, a second infrared sensor 41, and a third infrared sensor 42 are embedded in the backrest portion 5 in correspondence with the respective seating areas E1, E2, E3. The first to third infrared sensors 40 to 42 emit infrared rays toward the seating regions E1, E2, and E3, respectively. The first to third infrared sensors 40 to 42 are electrically activated when the emitted infrared rays are received again. It is one structure of the seating detection means comprised so that a general signal might be output. The first to third infrared sensors 40 to 42 are arranged on the upper portion of the backrest portion 5 so that the seating can be detected even when the occupant seated in each of the seating regions E1, E2, and E3 is an infant. Yes. The first infrared sensor 40 is disposed in the right seating area E1 and detects the presence or absence of the occupant P1 shown in FIG. 1, and the second infrared sensor 41 is disposed in the middle seating area E2, and is shown in FIG. The presence / absence of seating of P2 is detected, and the third infrared sensor 42 is disposed in the left seating region E3, and detects the presence / absence of seating of the passenger P3 shown in FIG. The 1st infrared sensor 40, the 2nd infrared sensor 41, and the 3rd infrared sensor 42 are arrange | positioned in the state respectively spaced apart by predetermined spacing.

  A housing portion 5 a is defined in the center of the backrest portion 5, and the housing portion 5 a has a larger space than the airbag device 50. The accommodating part 5a accommodates the airbag device 50, and the airbag device 50 is disposed in a portion corresponding to the middle seating region E2.

  As shown in FIG. 2, the airbag device 50 is attached to a frame body 52 as a core material of the backrest portion 5 via a shielding plate 51. The airbag device 50 includes an inflator 53 as a gas generation source. The inflator 53 is fixed by being inserted into the retainer 54. The retainer 54 is a cylindrical member, and the retainer 54 in the cross section along line AA in FIG. 1 is formed in a hexagonal cross section. The retainer 54 is inserted in the airbag 55.

  The airbag 55 is stored in a state of being folded into a bellows shape. Note that the airbag 55 illustrated in FIG. 2 is provided with a predetermined interval in the folded portion for convenience of drawing, but is actually folded in a contact state. The airbag 55 is configured as a third restraining member. The shape of the airbag 55 in the deployed and inflated state has a width of at least 2/3 of the middle seating region E2 in the vehicle width direction, and from the upper end 5b side of the backrest portion 5 in the vertical direction to the seat portion 4 side. The shape extends along the vertical direction of the vehicle. More specifically, the airbag 55 in the deployed and inflated state is formed in a shape such that the upper end is located above the headrest 6 (see FIG. 5). The airbag 55 in the deployed and inflated state is filled with the inflation gas from the inflator 53, so that it has elasticity and has a buffering action against the impact.

  The shielding plate 51 is formed by curving a plate material and covers the front of the airbag 55. The shielding plate 51 is interposed between the folded portion of the airbag 55 and the cushion material, thereby shielding the folded portion of the airbag 55 from coming into contact with the cushion material laid in the backrest portion 5.

  The headrest 6 is provided with a first housing portion 6 a and a second housing portion 6 b that are partitioned so as to be larger than the outer shapes of the head airbag device 60 and the head airbag device 61. The first housing portion 6 a and the second housing portion 6 b are disposed on the upper end 5 b side of the backrest portion 5. A head airbag device 60 is disposed in the first housing portion 6a, and a head airbag device 61 is disposed in the second housing portion 6b.

  The head airbag device 60 is located between the right seating region E1 and the middle seating region E2 and at a portion of the headrest 6 corresponding to the space S1. The head airbag device 60 includes an inflator (not shown) as a gas generation source, a retainer (not shown) in which the inflator is inserted, and a head airbag 62 in which the retainer is inserted.

  The head airbag 62 is housed in a folded state in a bellows shape, and is configured as a first restraining member. The head airbag 63 has a shape extending over at least the entire region in the vehicle width direction of the space S1 in the expanded and inflated state. Further, the head airbag 63 in the deployed and inflated state functions as a buffer restraining member that has elasticity because it is filled with the inflation gas from the inflator and has a buffering action against an impact.

  The head airbag device 61 is located between the middle seating region E2 and the left seating region E3, and is located at the portion of the headrest 6 corresponding to the space S2. Similarly to the head airbag device 60, the head airbag device 61 includes an inflator (not shown) as a gas generation source, a retainer (not shown) in which the inflator is inserted, and a head airbag in which the retainer is inserted. 63. The inflator and retainer included in the head airbag device 61 have the same configuration as the inflator and retainer of the head airbag device 60.

  The head airbag 63 is housed in a state of being folded into a bellows shape, and is configured as a second restraining member. The head airbag 63 has a shape extending over at least the entire region in the vehicle width direction of the space S2 in the expanded and inflated state. Further, the head airbag 63 in the deployed and inflated state functions as a buffer restraining member that has elasticity because it is filled with the inflation gas from the inflator and has a buffering action against an impact.

  The right side body portion 2 is provided with a right impact sensor 7 as a side collision detection means for detecting a side collision from the right side with respect to the vehicle. As shown in FIG. 3, the right impact sensor 7 includes an electronic control device 8 (hereinafter referred to as “ECU 8”) serving as a control unit provided inside the vehicle body (for example, the back side of the glove box) and an electric. Connected. The right impact sensor 7 detects an impact generated when a collision (side collision) from the right side is applied to the vehicle, and inputs an impact detection signal sh1 to the ECU 8.

  Further, the left side body portion 3 is provided with a left impact sensor 9 as a side collision detection means for detecting a side collision from the left side with respect to the vehicle. As shown in FIG. 3, the left impact sensor 9 is electrically connected to the ECU 8. The left impact sensor 9 detects an impact generated when a collision (side impact) from the left side is applied to the vehicle, and inputs an impact detection signal sh2 to the ECU 8.

  As shown in FIG. 3, the ECU 8 is electrically connected to the head airbag device 60, the head airbag device 61, and the airbag device 50. The ECU 8 includes the head airbag device 60, the head airbag device 61, and An electric signal can be input to the airbag device 50. The ECU 8 is electrically connected with a first infrared sensor 40, a second infrared sensor 41, and a third infrared sensor 42, respectively.

  The first infrared sensor 40 inputs the seating detection signal P1on to the ECU 8 when the seating of the occupant P1 is detected, and inputs the non-sitting detection signal P1off to the ECU 8 when the seating of the occupant P1 is not detected. When the vehicle crashes, the ECU 8 determines that the occupant P1 is seated in the right seating area E1 when the seating detection signal P1on is input from the first infrared sensor 40, and the non-sitting detection signal P1off is input. Sometimes it is determined that the occupant P1 is not seated in the right seating area E1.

  The second infrared sensor 41 inputs the seating detection signal P2on to the ECU 8 when the seating of the occupant P2 is detected, and inputs the non-sitting detection signal P2off to the ECU 8 when the seating of the occupant P2 is not detected. When the side collision of the vehicle, the ECU 8 determines that the occupant P2 is seated in the middle seating area E2 when the seating detection signal P2on is input from the second infrared sensor 41, and the non-sitting detection signal P2off is input. Sometimes it is determined that the occupant P2 is not seated in the middle seating area E2.

  The third infrared sensor 42 inputs a seating detection signal P3on to the ECU 8 when the seating of the occupant P3 is detected, and inputs a non-sitting detection signal P3off to the ECU 8 when the seating of the occupant P3 is not detected. When the vehicle crashes, the ECU 8 determines that the occupant P3 is seated in the left seating area E3 when the seating detection signal P3on is input from the third infrared sensor 42, and the non-sitting detection signal P3off is input. It is sometimes determined that the occupant P3 is not seated in the middle seating area E2.

  Next, in such a seat 1, the ECU 8 operates the airbag device 50, the head airbag device 60, and the head airbag device 61 based on the presence / absence of the passengers P1 to P3 and the detection result of the seating position at the time of a side collision of the vehicle. A process for controlling whether or not to be performed will be described.

  The ECU 8 inputs an impact detection signal sh1 from the right impact sensor 7 when it receives a side impact on the right side of the vehicle, and receives an impact from the left impact sensor 9 when it receives a side impact on the left side of the vehicle. The detection signal sh2 is input. The ECU 8 having received the impact detection signal sh1 or the impact detection signal sh2 receives the seating detection signals P1on, P2on, and P3on from the first infrared sensor 40, the second infrared sensor 41, and the third infrared sensor 42 at the time of the input. If it is, it is determined that the three occupants P1, occupant P2, and occupant P3 are seated in the seating areas E1 to E3. In such a situation, the heads of the occupants P1 to P3 move to the spaces S1 and S2 due to a side collision of the vehicle, and the heads of the occupants P1 to P3 interfere (directly collide) with each other. May occur. Therefore, the ECU 8 determines to arrange the head airbag 62 in the space S1 and to arrange the head airbag 63 in the space S2. When such determination is made, the ECU 8 inputs the operation signal a1 to the head airbag device 60 and also inputs the operation signal a2 to the head airbag device 61, and the head airbag device 60 and the head airbag device. 61 is controlled. The operation control refers to control for deploying and inflating the airbag provided in the apparatus by generating an inflation gas from the inflator of the airbag apparatus that has received the electrical signal by the ECU 8. .

  When the operation signal a <b> 1 is input, the head airbag device 60 operates to generate inflation gas from the inflator of the head airbag device 60, thereby deploying and inflating the head airbag 62. As shown in FIG. 4, the deployed and inflated head airbag 62 is disposed in a space S1 that exists between the right seating region E1 and the middle seating region E2. When the operation signal a <b> 2 is input, the head airbag device 61 operates to generate inflation gas from the inflator of the head airbag device 61, thereby deploying and inflating the head airbag 63. As shown in FIG. 4, the deployed and inflated head airbag 63 is disposed in a space S2 existing between the middle seating region E2 and the left seating region E3. In addition, the airbag apparatus 50 which has not input the operation signal from ECU8 becomes inactive, and the airbag 55 of the said airbag apparatus 50 is not arrange | positioned in a vehicle interior.

  When the head airbag 62 is disposed in the space S1 in a state where the occupants P1 to P3 are seated in the seating areas E1 to E3, the space S1 existing between the head of the occupant P1 and the head of the occupant P2 is generated. Therefore, the interference between the head of the passenger P1 and the head of the passenger P2 is suppressed. Further, when the head airbag 63 is arranged in the space S2, the space S2 existing between the head of the occupant P2 and the head of the occupant P3 is filled, so the head of the occupant P2 and the head of the occupant P3 Interference is suppressed.

  Next, the impact detection signal sh1 from the right impact sensor 7 or the impact detection signal sh2 from the left impact sensor 9 is input to the ECU 8, and the seating detection signal from the first infrared sensor 40 and the third infrared sensor 42 to the ECU 8 at the time of the input. A case where P1on and P3on are input and the non-seating detection signal P2off is input from the second infrared sensor 41 will be described. In this case, the ECU 8 determines that two passengers P1 and P3 are seated in the right seating area E1 and the left seating area E3. In such a situation, there is a possibility that the occupant P1 may interfere with the occupant P3 (direct collision) due to the occupant P1 moving toward the left side body part 3 due to a side collision of the vehicle. is there. Further, there is a possibility that a situation occurs in which the occupant P3 moves to the right side body portion 2 side due to a side collision of the left side of the vehicle, thereby causing interference (direct collision) with the occupant P1. For this reason, the ECU 8 determines that the head airbag 62 is disposed in the space S1 and the head airbag 63 is disposed in the space S2. In addition, the ECU 8 determines that the airbag 55 is to be disposed in the middle seating region E2 between the head airbag 62 and the head airbag 63.

  When such a determination is made, the ECU 8 inputs the activation signal a1 to the head airbag device 60, inputs the activation signal a2 to the head airbag device 61, and further activates the airbag device 50. a3 is input and the operation of each airbag device 50, 60, 61 is controlled. As a result, the head airbag 62 of the head airbag device 60 and the head airbag 63 of the head airbag device 61 are deployed and inflated in the same manner as described above, and are respectively disposed in the space S1 and the space S2 as shown in FIG. The

  Further, when the operation signal a3 is input, the airbag device 50 operates to generate inflation gas from the inflator 53 provided in the airbag device 50, thereby deploying and inflating the airbag 55. As shown in FIG. 5, the deployed and inflated airbag 55 is disposed between the head airbag 62 and the head airbag 63 and in the middle seating region E2.

  In a state where the occupant P1 is seated in the right seating area E1 and the occupant P3 is seated in the left seating area E3, the head airbag 62 is disposed in the space S1, the head airbag 63 is disposed in the space S2, and the middle seating When the airbag 55 is disposed in the region E2, the space formed between the occupant P1 and the occupant P3 is filled, so that the occupant P1 and the occupant P3 are prevented from interfering with each other. Further, the airbag 55 applies a reaction force to the head airbag 62 and the head airbag 63 and protects the upper half of the occupant P1 from the interference with the upper half of the occupant P3. The airbag 55 also functions as a receiving restraint member that receives an impact force applied to the head airbag 62 and the head airbag 63.

  Next, the impact detection signal sh1 from the right impact sensor 7 or the impact detection signal sh2 from the left impact sensor 9 is input to the ECU 8, and the seating detection signal from the first infrared sensor 40 and the second infrared sensor 41 to the ECU 8 at the time of the input. A case where P1on and P2on are input and the non-seating detection signal P3off is input from the third infrared sensor 42 will be described.

  In this case, the ECU 8 determines that the two passengers P1 and P2 are seated in the right seating area E1 and the middle seating area E2. In such a situation, when the occupant P1 moves to the left side body part 3 side by the side collision of the vehicle, a situation occurs in which the head of the occupant P1 interferes with the head of the occupant P2. There is a fear. Moreover, there is a possibility that a situation occurs in which the occupant P2 moves to the right side body part 2 side due to a side collision of the left side of the vehicle, thereby interfering with the occupant P1. For this reason, the ECU 8 determines to arrange the head airbag 62 in the space S1.

  When such determination is made, the ECU 8 inputs an operation signal a1 to the head airbag device 60 and controls the operation of the head airbag device 60. As a result, the head airbag 62 of the head airbag device 60 is deployed and inflated in the same manner as described above, and is disposed in the space S1 as shown in FIG. Note that the airbag device 50 and the head airbag device 61 that have not received an activation signal from the ECU 8 are deactivated, and the airbag 55 of the airbag device 50 and the head airbag 63 of the head airbag device 61 are in the vehicle interior. Not placed.

  When the head airbag 62 is disposed in the space S1 in a state where the occupant P1 is seated in the right seating area E1 and the occupant P2 is seated in the middle seating area E2, the head of the occupant P1 and the head of the occupant P2 Since the space S1 existing between the occupant P1 and the occupant P1 is prevented from interfering with the head of the occupant P1.

  Next, the impact detection signal sh1 from the right impact sensor 7 or the impact detection signal sh2 from the left impact sensor 9 is input to the ECU 8, and the seating detection signal from the second infrared sensor 41 and the third infrared sensor 42 to the ECU 8 at the time of the input. A case where P2on and P3on are input and the non-seating detection signal P1off is input from the first infrared sensor 40 will be described.

  In this case, the ECU 8 determines that two passengers P2 and P3 are seated in the middle seating area E2 and the left seating area E3. In such a situation, when the occupant P2 moves to the left side body part 3 side by the side collision of the vehicle, a situation occurs in which the head of the occupant P2 interferes with the head of the occupant P3. There is a fear. Moreover, there is a possibility that a situation occurs in which the occupant P3 moves to the right side body part 2 side due to a side collision of the left side of the vehicle and interferes with the occupant P2. For this reason, the ECU 8 determines to arrange the head airbag 63 in the space S2.

  When such determination is made, the ECU 8 inputs an operation signal a2 to the head airbag device 61 and controls the operation of the head airbag device 61. As a result, the head airbag 63 of the head airbag device 61 is deployed and inflated in the same manner as described above, and is disposed in the space S2 as shown in FIG. Note that the airbag device 50 and the head airbag device 60 that have not received an activation signal from the ECU 8 are deactivated, and the airbag 55 of the airbag device 50 and the head airbag 62 of the head airbag device 60 are in the vehicle interior. Not placed.

  When the head airbag 63 is disposed in the space S2 in a state where the occupant P2 is seated in the middle seating area E2 and the occupant P3 is seated in the left seating area E3, the head of the occupant P2 and the head of the occupant P3 Since the space S2 existing between the occupant and the head of the occupant P2 and the occupant P3 are prevented from interfering with each other.

  Next, the impact detection signal sh1 is input to the ECU 8 from the right impact sensor 7, and the seating detection signal P1on is input from the first infrared sensor 40 to the ECU 8 at the time of the input, and the second infrared sensor 41 and the third infrared sensor 42 are input. The case where the non-seating detection signals P2off and P3off are input from will be described.

  In this case, the ECU 8 determines that one occupant P1 is seated in the right seating area E1. In such a situation, there is a possibility that the occupant P1 may interfere with the left side body part 3 due to the occupant P1 moving to the left side body part 3 due to a side collision of the vehicle. . For this reason, the ECU 8 determines to arrange the head airbag 62 in the space S1.

  When such determination is made, the ECU 8 inputs an operation signal a1 to the head airbag device 60 and controls the operation of the head airbag device 60. As a result, the head airbag 62 of the head airbag device 60 is deployed and inflated in the same manner as described above, and is disposed in the space S1 as shown in FIG. Note that the airbag device 50 and the head airbag device 61 that have not received an activation signal from the ECU 8 are deactivated, and the airbag 55 of the airbag device 50 and the head airbag 63 of the head airbag device 61 are in the vehicle interior. Not placed.

  When the head airbag 62 is disposed in the space S1 in a state where the occupant P1 is seated in the right seating region E1, the space formed between the occupant P1 and the left side body portion 3 is filled, and thus the occupant P1 Is prevented from interfering with the left side body portion 3.

  Next, the impact detection signal sh1 from the right impact sensor 7 or the impact detection signal sh2 from the left impact sensor 9 is input to the ECU 8, and the seating detection signal P2on is input from the second infrared sensor 41 to the ECU 8 at the time of the input. The case where the non-seating detection signals P1off and P3off are input from the 1 infrared sensor 40 and the third infrared sensor 42 will be described.

  In this case, the ECU 8 determines that one occupant P2 is seated in the middle seating region E2. In such a situation, the occupant P2 may move to the left side body portion 3 due to a side collision of the vehicle on the right side, thereby causing a situation in which the occupant P2 interferes with the left side body portion 3. . Moreover, there is a possibility that a situation occurs in which the occupant P2 interferes with the right side body portion 2 due to the occupant P2 moving toward the right side body portion 2 due to a side collision of the left side of the vehicle. For this reason, the ECU 8 determines to arrange the head airbag 62 in the space S1 and to arrange the head airbag 63 in the space S2.

  When such determination is made, the ECU 8 inputs the operation signal a1 to the head airbag device 60 and also inputs the operation signal a2 to the head airbag device 61, and the head airbag device 60 and the head airbag device. 61 is controlled. As a result, the head airbag 62 of the head airbag device 60 and the head airbag 63 of the head airbag device 61 are deployed and inflated in the same manner as described above, and are arranged in the spaces S1 and S2, respectively, as shown in FIG. The In addition, the airbag apparatus 50 which has not input the operation signal from ECU8 becomes inactive, and the airbag 55 of the said airbag apparatus 50 is not arrange | positioned in a vehicle interior.

  When the head airbag 62 is disposed in the space S1 and the head airbag 63 is disposed in the space S2 in a state where the occupant P2 is seated in the middle seating area E2, the space between the occupant P2 and the right side body portion 2 is determined. And the space formed between the occupant P2 and the left side body part 3 are filled. Therefore, it is suppressed that passenger | crew P2 interferes with the right side body part 2 and the left side body part 3. FIG.

  Next, an impact detection signal sh2 is input to the ECU 8 from the left impact sensor 9, and non-seating detection signals P1off and P2off are input to the ECU 8 from the first infrared sensor 40 and the second infrared sensor 41 at the time of the input, A case where the seating detection signal P3on is input from the infrared sensor 42 will be described.

  In this case, the ECU 8 determines that one occupant P3 is seated in the left seating area E3. In such a situation, there is a possibility that the occupant P3 may interfere with the right side body part 2 due to the occupant P3 moving toward the right side body part 2 due to the side collision of the left side of the vehicle. . For this reason, the ECU 8 determines to arrange the head airbag 63 in the space S2.

  When such determination is made, the ECU 8 inputs an operation signal a2 to the head airbag device 61 and controls the operation of the head airbag device 61. As a result, the head airbag 63 of the head airbag device 61 is deployed and inflated in the same manner as described above, and is disposed in the space S2 as shown in FIG. Note that the airbag device 50 and the head airbag device 60 that have not received an activation signal from the ECU 8 are deactivated, and the airbag 55 of the airbag device 50 and the head airbag 62 of the head airbag device 60 are in the vehicle interior. Not placed.

  When the head airbag 63 is disposed in the space S2 in a state where the occupant P3 is seated in the left seating area E3, the space formed between the occupant P3 and the right side body portion 2 is filled, and thus the occupant P3 Is prevented from interfering with the right side body portion 2.

This embodiment has the following effects.
(1) At the time of a side collision of the vehicle, the ECU 8 is based on the detection results of the first infrared sensor 40, the second infrared sensor 41, and the third infrared sensor 42, and the presence or absence of the passengers P1 to P3 and the seating areas E1 to E3. Detect which area you are sitting on. The ECU 8 controls whether the air bag device 50, the head air bag device 60, and the head air bag device 61 are activated based on the detection result, so that any one of the head air bag 62, the head air bag 63, and the air bag 55 is controlled. Decide what to place. Based on the determination result, the ECU 8 determines that the space S1, the space S2 formed between the occupants P1 and P3, or the left side body part 3 or the right side body on the opposite side of the occupants P1 to P3 and the side collision side. The head airbag 62, the head airbag 63, and the airbag 55 are arranged in a space formed between the section 2 and the head section.

  Therefore, at the time of a side collision of the vehicle, the occupants P1 to P3 move to the space S1 or the space S2 formed between the occupants P1 to P3 and interfere with other occupants P1 to P3, or the occupants P1 to P3 are on the side collision side. The side body parts 2 and 3 opposite to the side body parts 2 and 3 are prevented from moving and interfering with each other. Further, in order to determine the head airbag 62, the head airbag 63, and the airbag 55 to be arranged in the vehicle interior based on the detection results of the first infrared sensor 40, the second infrared sensor 41, and the third infrared sensor 42, the vehicle The head airbag 62, the head airbag 63, and the airbag 55 corresponding to the seating regions E1 to E3 in which the occupants P1 to P3 are not seated at the time of the side collision are not disposed wastefully. Therefore, the head airbag 62, the head airbag 63, and the airbag 55 can be suitably deployed and inflated according to the presence or absence of the occupants P1 to P3 in the seating regions E1 to E3.

  (2) The right side body portion 2 is provided with a right impact sensor 7 for detecting a side collision from the right side with respect to the vehicle. The left side body 3 is provided with a left impact sensor 9 that detects a side collision from the left side with respect to the vehicle. Then, the ECU 8 arranges the airbag 55, the head airbag 62, and the head airbag 63 based on the detection results obtained from the right impact sensor 7 and the left impact sensor 9, and the airbag device 50, the head airbag. The device 60 and the head airbag device 61 are controlled to be operable. At this time, when there are one occupant P1 to P3, the ECU 8 also includes the airbag 55 and the head airbag 62 in the space formed between the occupants P1 to P3 and the side body parts 2 and 3 on the side collision side. The head airbag 63 is disposed. Therefore, the impact force from the side collision direction applied to the passengers P1 to P3 due to the side collision of the vehicle can be relaxed.

  (3) The head airbag device 60 and the head airbag device 61 are provided in the vehicle interior. The head airbag device 60 includes a head airbag 62 that expands and inflates, the head airbag device 61 includes a head airbag 63 that expands and expands, and the airbag device 50 includes an airbag 55. In this embodiment, since the head airbag 62, the head airbag 63, and the airbag 55 are employed as the members that have the effect of relaxing the impact, a spherical member that has a buffering action but cannot be folded and accommodated is accommodated. Compared to the above, the space to be accommodated can be reduced.

  (4) The shape of the airbag 55 in the deployed and inflated state is formed in a shape along the vertical direction of the vehicle from the upper end 5b side of the backrest portion 5 to the seat portion 4 side in the vertical direction. The deployed and inflated airbag 55 has a function of applying a reaction force to the head airbag 62 and the head airbag 63. Further, the airbag 55 deployed and inflated when the occupant P1 is seated in the right seating area E1 and the occupant P3 is seated in the left seating area E3 is because the upper body of the occupant P1 interferes with the upper body of the occupant P3. Protect. Therefore, compared with the case where a member that provides reaction force to the head airbag 62 and the head airbag 63 and a member that protects the upper body of the occupant P1 and the upper body of the occupant P3 from interference are provided separately, Increase can be suppressed.

  (5) The deployed airbag 55, the head airbag 62, and the head airbag 63 have a buffering action. Therefore, the airbag 55, the head airbag 62, and the head airbag 63 can moderate the impact force applied from the side of the vehicle.

  (6) The head airbag 62 and the head airbag 63 are airbags for protecting the head. The head airbag 62 is deployed and inflated near the head of the occupant P1 or near the head of the occupant P2, and the head airbag 63 is deployed and inflated near the head of the occupant P2 or the head of the occupant P3. Therefore, the head airbag 62 and the head airbag 63 can suitably protect the heads of the passengers P1 to P3.

  (7) The first infrared sensor 40, the second infrared sensor 41, and the third infrared sensor 42 are respectively embedded in the seat portion 4, and when the passengers P1 to P3 are seated, the first infrared sensor 40 and the second infrared sensor. The sensor 41 and the third infrared sensor 42 are a configuration of a seating detection unit that outputs an electrical signal. Accordingly, when an infrared camera is used as one configuration of the seating detection means for detecting that the passengers P1 to P3 are seated, a control process is performed such that an electrical signal is output when the passengers P1 to P3 are seated by the infrared camera. As compared with the above, it is possible to easily control to output an electrical signal when the passengers P1 to P3 are seated.

(Example of change)
The embodiment is not limited to the above, and may be embodied as follows, for example.

  -When the occupant P1 is seated across the right seating area E1 and the middle seating area E2, or when the occupant P3 is seated across the middle seating area E2 and the left seating area E3, As appropriate, the head airbag 62, the head airbag 63, and the airbag 55 may be appropriately controlled. When performing such control, a radio wave transmission / reception device as a seating detection unit that detects a state when the passengers P1 to P3 are seated may be provided in the left side body portion 3 or the right side body portion 2. Then, by directing the radio wave transmission / reception device in front of the backrest part 5, radio waves can be emitted to the seated passengers P1 to P3. The radio wave emitted from the radio wave transmission / reception device is reflected and returned to the radio wave reception device. At this time, a radio wave signal wa based on the state of the radio wave returned to the radio wave transmission / reception device is output to the ECU 8. The ECU 8 deploys and inflates any one of the airbag 55, the head airbag 62, and the head airbag 63 based on the radio signal wa and the detection results of the first infrared sensor 40, the second infrared sensor 41, and the third infrared sensor 42. Decide what you want to do. In this way, the airbag is suitable for the occupant P1 and the occupant P3 even when the occupant P1 and the occupant P3 are in a special seating posture such that the posture of the occupant P1 and the occupant P3 straddles the two seating areas at the time of a side collision of the vehicle. 55, a head airbag 62 and a head airbag 63 can be arranged.

  -The sensor used as the seating detection means may be changed. For example, a first weight sensor, a second weight sensor, and a third weight sensor embedded in the seat portion 4 so as to correspond to the respective seating areas E1, E2, and E3 may be used as the seating detection means. In this case, when the first to third weight sensors detect a weight (for example, 2 kg or more) greater than or equal to a predetermined value, an electrical signal is output so that the seating detection means can be configured.

  -The member which restrains passenger | crew P1-P3 at the time of a vehicle side collision may not be the airbag 55, the head airbag 62, and the head airbag 63. FIG. For example, instead of the airbag 55, the head airbag 62, and the head airbag 63, an elastic body may be used as a restraining member. In addition, the movement of the occupants P <b> 1 to P <b> 3 may be restricted by causing the elastic body to protrude during a side collision of the vehicle. However, in this case, the elastic modulus of the elastic body needs to be a value that does not hinder even if the passengers P1 to P3 interfere with each other. Moreover, what is necessary is just to comprise by the spherical member which used the urethane raw material as a specific example of an elastic body, for example.

  The member used as the third restraining member may not be the airbag 55. Since the third restraining member may be any member that can receive the impact force applied to the head airbag 62 and the head airbag 63, a member having higher rigidity than the head airbag 62 and the head airbag 63 is used as the third restraining member. It may be used as a member.

  When an elastic body is used as a restraining member instead of the airbag 55, the head airbag 62, and the head airbag 63, a motor is disposed in the seat 1, and the elastic body is disposed by the driving force of the motor. Also good.

  When the impact detection signal sh1 is input to the ECU 8, a seating detection signal P1on is input from the first infrared sensor 40, a non-sitting detection signal P2off from the second infrared sensor 41, and a non-sitting detection signal from the third infrared sensor 42 In the case where P3off is input, the head airbag device 60 may not be the target of the operation control. That is, when the impact force from the right side is a predetermined value or more (for example, 30 [kg · m / h] or more), if only the head airbag 62 is deployed and inflated, the occupant P1 is moved to the right side. With this movement, the head airbag 62 itself may move to the right side. Therefore, in such a case, in addition to controlling the operation of the head airbag device 60, the operation of the airbag device 50 is also controlled, so that the head airbag 62 and the airbag 55 are deployed and inflated, thereby occupant P1. The movement to the left side can be further suppressed. Similarly, when the impact detection signal sh2 is input to the ECU 8 and the occupant P3 is seated in the left seating area E3, the operation of the airbag device 50 and the head airbag device 61 is controlled, and the airbag 55 and the head airbag 63 are controlled. May be deployed and expanded to be placed in the vehicle interior.

  When the occupant P2 is seated in the middle seating area E2, either the head airbag 62 or the head airbag 63 may be selected according to the side collision direction and disposed in the vehicle interior. Specifically, when the impact detection signal sh <b> 1 is input, the head airbag 63 is disposed so as to fill a space between the occupant P <b> 2 and the left side body part 3. On the other hand, when the impact detection signal sh2 is input, the head airbag 62 is disposed so as to fill the space between the occupant P2 and the right side body portion 2.

  -The seat 1 may be configured to be seated by three or more people. In this case, if the number of seats allowed to be seated on the seat 1 is N, the head airbag device is provided at a position corresponding to the space between the heads of each occupant in a state where the maximum number of occupants are seated. Thus, there are N-1 head airbag devices. In addition, N-2 airbag devices 50 may be provided on the backrest portion 5 other than both side portions of the seat 1.

-The sheet 1 may not be an integral sheet. For example, a separation-type seat provided with three or more seats on which each passenger P1 to P3 sits one by one may be used.
The occupant protection device of the present invention can be applied to a seat other than the seat extended in the vehicle sub-direction. For example, the occupant protection device of the present invention can be applied to a seat extended in the vehicle length direction. In this case, the collision direction is the right side or the left side of the occupant seated by the collision detection means including the front impact sensor provided at the front grille portion of the vehicle and the rear impact sensor provided at the rear body of the vehicle. It is only necessary to determine which one of the airbag device 50, the head airbag device 60, and the head airbag device 61 is to be operated and controlled after taking into account the detection result.

-The position of the vehicle on which the seat 1 is disposed may be anywhere. That is, it may be the front seat of the vehicle or the rear seat of the vehicle.
The following technical idea (invention) can be understood from the embodiment.

  ・ The seating capacity is 3 or more. The seating area is equipped with a separate seat or an integrated seat that has the seating area for the number of seats that are seated side by side. A control method for an occupant protection device that protects an occupant from moving due to an impact at the time of a collision with the vehicle and interfering with another occupant and interfering with a vehicle side opposite to the side of the side collision. A plurality of restraining members that are disposed in the passenger compartment at the time of the collision and restrain the movement of the occupant are provided, and among the plurality of restraining members, the restraining member that is disposed at a position that can contact the occupant at the time of the collision. Is configured to relax the impact at the time of contact, detects the presence or absence of an occupant in each seating area or both the presence and absence of the occupant and the sitting posture of the occupant, and based on the detection results, The restraint member to be arranged in the space to be formed or the space formed between the occupant and the vehicle side opposite to the side vehicle side is determined, and the restraint member is determined based on the determination result. A control method for an occupant protection device, wherein the control method is arranged in a passenger compartment.

The front view which shows the vehicle seat for 3 persons. The AA sectional view taken on the line of the airbag apparatus in FIG. The block diagram of a passenger protection device. The front view which shows the state which two head airbags are expand | deployed and inflated in the state in which three passenger | crew are seated. The front view which shows the state which the airbag and two head airbags are expand | deployed and inflated in the state which the two passenger | crew are seated on the right and left of a seat. FIG. 4 is a front view showing a state in which one head airbag is deployed and inflated in a state where two passengers are seated on the right and center of the seat. FIG. 3 is a front view showing a state in which one head airbag is deployed and inflated in a state where two passengers are seated at the center and left of the seat. FIG. 3 is a front view showing a state in which one head airbag is deployed and inflated in a state where one occupant is seated on the right side of the seat. FIG. 3 is a front view showing a state in which two head airbags are deployed and inflated in a state where one occupant is seated in the center of the seat. FIG. 3 is a front view showing a state in which one head airbag is deployed and inflated in a state where one occupant is seated on the left side of the seat.

Explanation of symbols

  E1 ... Right seating region, E2 ... Medium seating region, E3 ... Left seating region, P1, P2, P3 ... Occupant, P1on, P2on, P3on ... Seat detection signal, S1 ... Space, S2 ... Space, 1 ... Seat, 4 ... Seat part, 5 ... backrest part, 5a ... housing part, 5b ... upper end, 8 ... electronic control device, 40 ... first infrared sensor, 41 ... second infrared sensor, 42 ... third infrared sensor, 50 ... airbag device, 55 ... Airbag, 60 ... Head airbag device, 61 ... Head airbag device, 62 ... Head airbag, 63 ... Head airbag.

Claims (7)

The seating capacity is set to three or more, and the seating area is installed in a vehicle in which a separate seat or an integrated seat having the seating area for the number of seats that seats the seating capacity is seated side by side. An occupant protection device that protects an occupant from moving due to an impact at the time of a collision with the vehicle and interfering with another occupant and interfering with a vehicle side opposite to the vehicle side on the collision side,
A plurality of restraining members that are always housed in a housing portion provided in the vehicle, and that are arranged in the passenger compartment at the time of the collision and restrain the movement of the occupant;
Seating detection means for detecting the presence or absence of an occupant in each seating area, or detecting both the presence or absence of an occupant and the seating posture of the occupant;
Control means for determining a restraining member to be disposed in the vehicle interior based on a detection result of the seating detection means, and for arranging the restraining member in the vehicle interior based on the determination result;
Among the plurality of restraining members, the restraining member arranged at a position where it can come into contact with an occupant at the time of a collision is configured to have an action of relaxing an impact at the time of the contact,
The control means is a constraining member to a space formed between the occupants based on the detection result of the seating detection means, or a space formed between the occupant and the vehicle side opposite to the vehicle side on the collision side. An occupant protection device characterized in that the occupant is disposed. The seat is a seat with N seating capacity (N is a natural number of 3 or more),
The plurality of restraining members are arranged between the adjacent seating regions and have N-1 buffering restraining members having a buffering action, and between the buffering restraining members adjacent to each other and arranged in the seating region. Comprising N-2 receiving and restraining members having an action of receiving an impact force applied to the buffering restraining member at the time of contact with
The control means includes
When the occupants are seated adjacent to each other, the buffer restraint member is disposed between the adjacent occupants,
When the occupant is seated in a state where one or more seating areas exist between adjacent occupants, the buffer restraint member and the receiving restraint member are disposed between the adjacent occupants. The occupant protection device according to claim 1. The seat is a seat with a seating capacity of 3 people,
The buffer restraining member is a first restraining member disposed between a right seating region and a center seating region when the vehicle forward direction is used as a reference, and when the vehicle forward direction is used as a reference. A second restraining member disposed between the left seating area and the central seating area, wherein the receiving restraint member is between the first restraining member and the second restraining member and is located in the center Comprising a third restraining member arranged in the seating area of
The control means includes
When the seating detection means detects seating of occupants in all seating areas and three people are seated, the first restraining member and the second restraining member are arranged,
When the seating detection means detects the seating of an occupant in the left and right seating areas and two people are seated, the first restraining member, the second restraining member, and the third restraining member are disposed. Let
When the seating detection means detects the seating of an occupant in the central seating area and the right seating area and the two seated, the first restraining member is disposed,
The said 2nd restraint member is arrange | positioned when the said seating detection means detects a passenger | crew's seating in the center seating area | region and the seating area | region on the left side, and two persons are seating. The occupant protection device described. The vehicle is provided with a collision detection means for detecting a collision with the vehicle,
The control means recognizes the presence / absence of the collision and the collision direction based on the detection result of the collision detection means,
When the seating detection means detects the seating of an occupant in the right seating area and one person is seated and the collision direction is on the right side of the seated occupant, the first restraining member is disposed, or the first Placing the restraining member and the third restraining member;
When the seating detection means detects the seating of an occupant in the left seating area and one person is seated and the collision direction is on the left side of the seated occupant, the second restraining member is disposed, or the second Placing the restraining member and the third restraining member;
When the seating detection means detects the seating of an occupant in the central seating area and one person is seated, the second restraint member is disposed when the collision direction is on the right side of the seated occupant, or the second restraint While the member and the first restraining member are disposed, the first restraining member is disposed when the collision direction is on the left side of the seated occupant, or the first restraining member and the second restraining member are disposed. The occupant protection device according to claim 3. The control means includes
When the seating detection means detects that one occupant is seated in a posture straddling the right seating region and the center seating region, and the collision direction is the right side of the seated occupant, 2 restraining members and the third restraining member are arranged,
In the case where the seating detection means detects that one occupant is seated in a posture straddling the left seating region and the center seating region, and the collision direction is the left side of the seated occupant, the first The occupant protection device according to claim 4, wherein one restraint member and the third restraint member are disposed. The occupant protection device according to any one of claims 1 to 5, wherein the plurality of restraining members are airbags arranged by being deployed and inflated in a vehicle interior. The first restraining member and the second restraining member are airbags that are deployed and inflated on the upper end side of the backrest portion of the seat to protect the occupant's head,
The third restraining member expands and expands in the vertical direction of the vehicle from the upper end side of the seat back portion to the seat portion side of the seat, and is applied to the first restraining member and the second restraining member. 3. An airbag that applies reaction force and protects against interference between upper occupants when two occupants are seated in left and right seating areas. The occupant protection device according to any one of 5.

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