JP2013163402A - Back seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a back seat for a vehicle, which can secure a comfortable seating posture by avoiding contacts among shoulders of respective sitting persons sitting on a plurality of seats arranged in the same line, before they happen.SOLUTION: A back seat 1 for a vehicle includes a shoulder position shifting means for preventing contacts among shoulders of sitting persons sitting on respective seats 1A, 1B and 1C. One example of the shoulder position shifting means is a seat back rotating means for directing a seat back 3 toward the inside of the vehicle. The seat back rotating means is configured to direct the seat back 3 toward the inside of the vehicle by rotatively driving the seat back by a motor 7 in such a manner that a part, which is elongated in a vehicle height direction, of a seat frame 6 in the seat back 3 serves as a main shaft.

Description

  The present invention relates to a vehicular rear seat that prevents a shoulder of a seated person sitting on a seat in which a plurality of seats are arranged in the same row.

  In Patent Document 1, an air mat is built in a side cushion portion of a seat cushion, an auxiliary force corresponding to a load grasping an assist grip is calculated, and an actuator is operated based on the auxiliary force to inflate the air mat. An entry / exit operation assisting device that supports and assists an occupant's thigh is disclosed.

JP 2002-326528 A

  However, in the boarding / alighting operation assisting device described in Patent Document 1, the air mat built in the seat cushion is simply inflated to assist the elderly person or a disabled person's boarding / alighting operation. It does not take into account the comfort of passengers.

  For example, when three occupants get on a three-row seat, depending on the physique and the sitting position, the shoulders of the seated occupant sitting next to each other come into contact, and a comfortable seating posture cannot be ensured. In short, it is impossible for the occupant movement assist device of Patent Document 1 to prevent it when the shoulders of adjacent seated persons come into contact with each other.

  Accordingly, the present invention has been made to solve the above-described problem, and avoids contact between the shoulders of each seated person seated on a plurality of seats arranged in the same row, thereby ensuring a comfortable seating posture. An object of the present invention is to provide a rear seat for a vehicle.

  The vehicle rear seat according to the present invention is a rear seat in which at least three or more seats are arranged in the same row. The vehicle rear seat includes a means for detecting an occupant seated on the seat, a movable means for moving the seat cushion or the seat back, and a shoulder position moving means including a control means for controlling the movable means. Yes. When the control means detects an occupant seated on the central seat, the control means drives the movable means so as to prevent contact between the shoulders of the occupants seated by changing the posture of the occupant other than the center seat.

  According to the vehicle rear seat according to the present invention, when the occupant is detected by the means for detecting the occupant seated on the center seat, the control means drives the movable means for moving the seat cushion or the seat back, By changing the posture of the occupant other than the center, contact between the shoulders of the seated occupants is prevented. Therefore, each person seated next can take a comfortable sitting posture.

It is an operation | movement figure which shows the backseat seat for vehicles of 1st Embodiment, and avoids the contact of the shoulders of the seated person who sits next by rotating a seat back. It is the perspective view which showed the backseat sheet for vehicles of a 1st embodiment, and looked at the seat back rotation means from the vehicle front to the vehicle back. It is the perspective view which showed the backseat seat for vehicles of a 1st embodiment, and looked at the seat back rotation means from the vehicles back to the vehicles front. It is the side view which showed the backseat seat for vehicles of a 1st embodiment, and looked at the seat back rotation means from the vehicle width direction. It is a control circuit which operates the seat back rotation means in the back seat for vehicles of a 1st embodiment. It is a flowchart which shows the seat back rotation operation | movement in the vehicle rear seat of 1st Embodiment. It is the perspective view which looked at the modification of the seat back rotation means of the backseat seat for vehicles of a 1st embodiment, and looked at the seat back rotation means from the vehicle back to the vehicle front. It is the side view which showed the modification of the seat back rotation means of the vehicle rear seat of 1st Embodiment, and looked at the seat back rotation means from the vehicle width direction. FIG. 6 is a perspective view of a vehicular rear seat including an airbag means for inflating an airbag built in a seat back, showing the vehicular rear seat of the second embodiment. It is a principal part perspective view which shows the back seat for vehicles of 2nd Embodiment, and takes out and shows the seat frame and airbag of a seat back. It is a control circuit which operates the airbag means in the backseat seat for vehicles of a 2nd embodiment. It is a flowchart which shows the airbag expansion | swelling operation | movement in the vehicle rear seat of 2nd Embodiment. It is an operation | movement figure which shows the backseat sheet | seat for vehicles of 3rd Embodiment, moves a center sheet | seat ahead of a vehicle, and avoids the contact of the shoulders of the seated person who sits next. It is the perspective view which showed the backseat sheet | seat for vehicles of 3rd Embodiment, and looked at the seat moving means from the vehicle rear to the vehicle front. It is the side view which showed the backseat seat for vehicles of a 3rd embodiment, and looked at the sheet moving means from the vehicle width direction. It is a control circuit which operates the sheet | seat moving means in the rear seat for vehicles of 3rd Embodiment. It is a flowchart which shows the seat movement operation | movement in the vehicle rear seat of 3rd Embodiment. It is an operation | movement figure which shows the backseat sheet | seat for vehicles of 4th Embodiment, moves the seat cushion by the side of a boarding / alighting port to a vehicle up-down direction, and avoids the contact of the seated person's shoulder sitting next. It is the perspective view which showed the backseat seat for vehicles of a 4th embodiment, and looked at the seat cushion moving means from the vehicle front to the vehicle back. FIG. 20 is a cross-sectional view taken along line AA of FIG. 19, illustrating a rear seat for a vehicle according to a fourth embodiment and explaining that an airbag is inflated or deflated to move a seat cushion seat surface position up and down. It is a control circuit which operates the seat cushion moving means in the backseat for vehicles of a 4th embodiment. It is a flowchart which shows the seat cushion movement operation | movement in the vehicle rear seat of 4th Embodiment.

Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.
Each embodiment is an example in which the present invention is applied to a rear seat of a vehicle seat such as an automobile. In the description of the drawings used for the description of each embodiment, the same reference numerals are given to the same constituent members, and the description thereof is omitted. In addition, the dimensional ratios in the drawings are exaggerated for convenience of explanation, and may be different from the actual ratios. Each embodiment is an example of a three-row seat, but may be a rear seat for a vehicle in which three or more seats are arranged.

<First Embodiment>
As shown in FIGS. 1 and 2, the vehicle rear seat 1 according to the first embodiment includes seats 1 </ b> A, 1 </ b> B, and 1 </ b> C that include a seat cushion 2 that forms a seat surface and a seat back 3 that forms a backrest. Are provided in the same row. In this example, a three-row sheet is used. The seat backs 3 of the seats 1A and 1C on both sides are connected to the rear end portion of the seat cushion 2 so as to be tiltable in the vehicle longitudinal direction Y via a reclining device. A headrest 4 is provided at the upper end of the seat back 3. The central seat 1B has a structure that does not recline. 1 and 2, the arrow Y is the vehicle front-rear and rear, the arrow X is the vehicle width direction, and the arrow Z is the vehicle height direction.

  Further, as shown in FIG. 1, the rear seat 1 for a vehicle has a shoulder position shift that prevents the shoulders 5A, 5Bs, and 5Cs of the occupants 5A, 5B, and 5C sitting on the seats 1A, 1B, and 1C from contacting each other. Have means. The shoulder position moving means includes means for detecting an occupant (sitting person) seated on the seat 1, movable means for moving the seat back 3, and control means for controlling the movable means. In the first embodiment, the movable means is a seat back rotating means for directing the seat back 3 toward the inside of the vehicle. In the case of a three-row seat, the seat backs 3 of the seats 1A and 1C on both sides on the entrance / exit side sandwiching the center seat 1B are rotated so as to face the inside of the vehicle as indicated by an arrow M.

  As shown in FIGS. 2, 3 and 4, the seat back rotating means is rotationally driven by a motor 7 with a portion 6A extending in the vehicle height direction Z of the seat frame 6 in the seat back 3 as a main shaft. 3 is directed to the inside of the vehicle. The seat frame 6 extends in the vehicle width direction X mainly with a vehicle inner portion 6A (referred to as a vehicle inner extension portion 6A) and a vehicle outer portion 6B (referred to as a vehicle outer extension portion 6B) extending in the vehicle height direction Z. The portion 6C (referred to as the vehicle upper portion 6C) and the portion 6D (referred to as the vehicle lower portion 6D) arranged vertically in the vehicle height direction Z have a substantially rectangular shape in plan view.

  The motor 7 is fixed below the floor panel 8 behind the seat back 3. The rotating shaft 9 of the motor 7 protrudes toward the passenger compartment R, and a drive gear 10 is fixed to the tip thereof. This drive gear 10 is also fixed on the floor panel 8 behind the seat back 3 and is driven on the one end side of the rotary shaft 11 fixed to the vehicle inner extension 6A of the seat frame 6 provided near the center seat 1B. It meshes with the gear 12.

  In the vehicular rear seat 1 configured as described above, as shown in FIG. 1A, depending on the physique and sitting of the seated persons 5A, 5B, and 5C seated on the respective seats 1A, 1B, and 1C in the same row. May contact the shoulders 5As, 5Bs, and 5Cs. In this state, the back cannot be sufficiently pressed against the seat back 3, so that a proper sitting posture cannot be taken. Therefore, the seat back rotating means which is a movable means for moving the seat back 3 is rotated so that the direction of the seat back 3 is directed to the inside of the vehicle.

  The seat back rotation operation will be described below with reference to FIGS. As shown in FIG. 5, the control circuit, which is the control means for operating the seat back rotating means, detects the occupant detection, which is means for detecting that the seats 5A, 5B, 5c are seated on the seats 1A, 1B, 1C. Means (specifically, occupant detection sensor) 14 and the occupant detection sensor 14 detect that the occupant 5B is seated on the central seat 1B and the occupants 5A, 5C are seated on any of the seats 5A, 5B on both sides. Then, it has the control part 16 which operates the seat back rotation means 15. FIG.

  In the seat back rotation operation flow of FIG. 6, first, whether or not the occupant detection sensor 14 embedded in the seat back 3 of the central seat 1B in the processing of step S1 has seated the seat occupant 5B on the seat 1B. Is detected. When it is determined that the seated person 5B has been detected, the control unit 16 proceeds to the next step S2, and when it is determined that the seated person 5B has not been detected, the process of step S1 is repeated.

  In the process of step S2, the occupant detection sensor 14 detects whether or not the occupants 5A and 5C are seated on the seats 1A and 1C that are both-end seats on the entrance / exit. When it is determined that the seats 5A and 5C have been detected, the control unit 16 proceeds to the next step S3, and when it is determined that the seats 5A and 5C have not been detected, the process of step S2 is repeated. In the process of step S2, the seats 5A and 5C are seated on the seats 1A and 1C at both ends, respectively, and the case where the seats are seated only on one of the seats is not included.

  In the process of step S3, the control unit 16 operates the motor 7. Specifically, the rotation shaft 9 is rotated by the rotational drive of the motor 7, the drive gear 10 fixed to the rotation shaft 9 is engaged with the driven gear 12, and the rotation shaft 11 fixed to the driven gear 12 rotates. Then, in the process of the next step S4, the seat frame 6 fixed to the rotating shaft 11 rotates toward the inside of the vehicle, and the body orientation of the seated persons 5A and 5C seated on the seats 1A and 1C is shifted toward the center. Turn to. As a result, contact between the shoulders 5As, 5Bs, and 5Cs of the adjacent seated persons 5A, 5B, and 5C is avoided, and the appropriate seating that allows the seat back 3 to be properly pressed and seated as shown in FIG. Can take posture.

  According to the rear seat for a vehicle according to the first embodiment, even if the shoulders of the seated persons seated in the respective seats 1A to 1C come into contact with each other, the shoulder position moving means is operated to make the shoulders of the seated persons sitting next to each other. In order to avoid contact, a comfortable sitting posture can be taken.

  Further, according to the rear seat for the vehicle of the first embodiment, the seat back rotating means for directing the seat back 3 toward the inner side of the vehicle is used as the movable means, so that it is adjacent only by directing the seat back 3 toward the inner side of the vehicle. It is possible to avoid contact between the shoulders of the seated person sitting on the seat.

  Further, according to the vehicular rear seat of the first embodiment, the seat back rotating means is rotationally driven by the motor 7 with the portion 6A extending in the vehicle height direction of the seat frame 6 in the seat back 3 as the main shaft. Since the seatback 3 is directed toward the inside of the vehicle, the seatback 3 can be easily changed in direction even for a heavy seated person.

  In addition, according to the vehicle rear seat of the first embodiment, the occupant detection sensor 14 provided in each of the three rows of seats has the seat 5B seated on the center seat 1B and any seat 1A, 1C on both sides. In addition, since the seat 16 is detected and the control unit 16 operates the seat back rotating means which is a movable means, the direction of the seat back 3 is automatically changed and the seat Contact between shoulders can be prevented.

  7 and 8 are modified examples of the rotation mechanism of the seat back rotation means in the vehicle rear seat 1 of the first embodiment. In this example, a guide rail 18 is provided on a pedestal 17 fixed to the floor panel 8, a rack gear 19 that meshes with the drive gear 10 of the motor 7 is slidably attached to the guide rail 18, and one end of the rack gear 19 is attached to the vehicle. The structure is fixed to the lower portion 6D. The fixed position between the rack gear 19 and the vehicle lower portion 6D is a position away from the rotary shaft 11 fixed to the vehicle inner extending portion 6A.

  When the motor 7 is driven to rotate, the drive gear 10 rotates to move the rack gear 19 along the guide rail 18 in the vehicle longitudinal direction Y. As a result, the seat back 3 pushed by the rack gear 19 rotates toward the inner side of the vehicle with the rotation shaft 11 as a rotation center. This seat back rotating means is also operated as shown in FIG. 6 by the control circuit shown in FIG.

  Although the first embodiment is an example of a three-row seat, it may be a rear seat for a vehicle in which three or more seats are arranged in the same row. For example, when three or more seats are arranged, the center seat refers to a seat excluding both side seats on the vehicle door side.

Second Embodiment
In the second embodiment, the movable means is an example in which an airbag built in the seat back 3 is inflated to move the position of the seated person's shoulder. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. FIG. 9 is a perspective view showing a rear seat for a vehicle according to the second embodiment and provided with airbag means for inflating an airbag built in the seat back. FIG. 10 is a perspective view showing the seat frame and the airbag taken out of the seat back.

  As shown in FIGS. 9 and 10, the airbag means of the second embodiment has an airbag 20 provided on the side cushion portion 3 a of the seat back 3 and means for inflating the airbag 20. The airbag 20 is inflated to push the shoulders of the occupants 5A and 5C to move the positions of the shoulders 5As, 5Bs, and 5Cs.

  The airbag 20 is provided only in the side cushion portion 3a on the entrance / exit side. The airbag 20 is inflated by introduction of air from an inflator (not shown) and inflated as shown by a two-dot chain line in FIG. The side cushion portion 3a is preferably formed of a material that can be expanded and contracted so as not to stretch when the airbag 20 provided therein is inflated.

  The airbag inflating operation will be described below with reference to FIGS. 11 and 12. As shown in FIG. 11, the control circuit for inflating the airbag 20 includes occupant detection means (specifically, occupant detection means) that detects that the occupants 5A, 5B, and 5c are seated on the seats 1A, 1B, and 1C. (Detection sensor) 14, an inflator that is a means for inflating the airbag 20, and an airbag means 21 that includes a control unit 16 that controls the inflation of the airbag 20 upon detection of the occupant detection sensor 14. .

  In the airbag inflating operation flow of FIG. 12, first, whether or not the occupant detection sensor 14 embedded in the seat back 3 of the central seat 1B is seated on the seat 1B is the occupant detection sensor 14 embedded in the seat back 3 of the center seat 1B. Is detected. When it is determined that the seated person 5B has been detected, the control unit 16 proceeds to the next step S6, and when it is determined that the seated person 5B has not been detected, the process of step S1 is repeated.

  In the process of step S6, the occupant detection sensor 14 detects whether or not the occupants 5A and 5C are seated on the seats 1A and 1C that are both-end seats on the entrance / exit side. When it is determined that the seats 5A and 5C have been detected, the control unit 16 proceeds to the next step S7, and when it is determined that the seats 5A and 5C have not been detected, the process of step S6 is repeated. In the process of step S6, the seats 5A and 5C are seated on the seats 1A and 1C at both ends, respectively, and the case where the seats are seated only on one of the seats is not included.

  In the process of step S7, the control unit 16 operates the airbag means 21 to supply air from the inflator to the airbag 20. Then, in the process of step S8, the airbag 20 is inflated, and the side cushion portion 3a of the seat back 3 pushes the shoulders 5As and 5Cs of the occupants 5A and 5C toward the front front side of the vehicle. As a result, the seats 5A and 5C seated on the seats 1A and 1C face toward the center, and the shoulders 5As, 5Bs, and 5Cs of the adjacent seats 5A, 5B, and 5C contact each other. As shown in FIG. 1B, it is possible to take an appropriate seating posture in which the back can be properly pressed and seated.

  According to the rear seat for a vehicle according to the second embodiment, even if the shoulders of the seated persons seated in the respective seats 1A to 1C come into contact with each other, the airbag means that is the movable means is activated and the seated person sitting next to each other is operated. In order to avoid contact between the shoulders, a comfortable sitting posture can be taken.

  Moreover, according to the vehicle rear seat of the second embodiment, the airbag means is composed of the airbag provided on the side cushion portion and the inflator as a means for inflating the airbag, so that the airbag is inflated. This makes it easy to avoid contact between shoulders of seated persons sitting next to each other.

<Third Embodiment>
In the third embodiment, as moving means, seat moving means for moving any one of a plurality of seats 1A to 1C in the vehicle longitudinal direction Y with respect to other seats to move the position of the seated person's shoulder; This is an example. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the vehicular rear seat according to the third embodiment, as shown in FIG. 13, when the seats 5A to 5C are seated on the three-seat seats 1A to 1C arranged in the same row, the center seat 1B is By moving the vehicle forward Y, the shoulders 5As, 5Bs, and 5Cs of the adjacent seaters 5A to 5C are separated from each other in the front-rear direction so that a comfortable seating posture can be taken.

  As shown in FIGS. 14 and 15, the seat moving means moves and drives the rack gear 19, which is a member connected to the seat frame 6 in the seat back 3, in the vehicle front-rear direction by the motor 7 to move the seat 1 </ b> B to the other seat 3 </ b> A. 3C is moved in the vehicle front-rear direction. The specific configuration of the sheet moving means includes a motor 7 as a drive source, a rack gear 19 that converts the rotation of the motor 7 into a linear motion, and a guide rail 18 that allows the rack gear 19 to slide.

  The rack gear 19 is slidable on a guide rail 18 provided on a pedestal 17 fixed to the floor panel 8. One end of the rack gear 19 is connected to the seat frame 6 of the seat back 3 in the central seat 1B. Specifically, one end of the rack gear 19 is fixed to the vehicle lower portion 6 </ b> D of the seat frame 6.

  The seat back 3 of the central seat 1B is not fixed to the seat cushion 2 and can be slid by a slide holding mechanism (not shown) in the vehicle front-rear direction.

  The sheet moving operation will be described below with reference to FIGS. 16 and 17. As shown in FIG. 16, the control circuit for operating the seat moving means is an occupant detection means (specifically, an occupant detection sensor) that detects that the seats 5A, 5B, and 5c are seated on the seats 1A, 1B, and 1C. 14, when the occupant detection sensor 14 detects that the occupant 5B is seated on the central seat 1B and the occupants 5A, 5C are seated on any of the seats 5A, 5B on both sides, the seat moving means 22 is operated. And a control unit 16.

  In the seat moving operation flow of FIG. 17, first, in step S9, the occupant detection sensor 14 embedded in the seat back 3 of the central seat 1B determines whether or not the occupant 5B who is the occupant is seated on the seat 1B. Detect. When it is determined that the seated person 5B has been detected, the control unit 16 proceeds to the next step S10, and when it is determined that the seated person 5B has not been detected, the process of step S9 is repeated.

  In the process of step S10, the occupant detection sensor 14 detects whether or not the occupants 5A and 5C are seated on the seats 1A and 1C which are both seats on the entrance / exit side. When it is determined that the seats 5A and 5C have been detected, the control unit 16 proceeds to the next step S11, and when it is determined that the seats 5A and 5C have not been detected, the process of step S10 is repeated. In the process of step S10, the seats 5A and 5C are seated on the seats 1A and 1C at both ends, respectively, and the case of seating on only one seat is not included.

  In the process of step S11, the control unit 16 operates the motor 7. Specifically, the rotation shaft 9 is rotated by the rotational drive of the motor 7, and the drive gear 10 fixed to the rotation shaft 9 meshes with the rack gear 19. Then, the rotational force of the drive gear 10 is transmitted to the rack gear 19, and the rack gear 19 is guided by the guide rail 18 and moves in the vehicle longitudinal direction Y. Here, the rack gear 19 moves forward of the vehicle.

  When the rack gear 19 moves forward of the vehicle, the seat back 3 of the central seat 1B connected to one end of the rack gear 19 is pushed by the rack gear 19 and advances forward from the seat back 3 of the both side seats 1A, 1C. As a result, contact between the shoulders 5As, 5Bs, and 5Cs of the adjacent seated persons 5A, 5B, and 5C is avoided, and the appropriate seating that allows the seat back 3 to be pressed firmly against the seat back 3 as shown in FIG. Can take posture.

  The slide movement amount of the center seat 1B is a slight slide amount such that the shoulders 5As and 5Cs of the seated persons 5A and 5C seated next to each other do not come into contact with each other. Therefore, there is no sense of incongruity in the seated state of the buttocks with respect to the seat cushion 2 of the seated person 5B seated on the central seat 1B.

  According to the rear seat for a vehicle according to the second embodiment, even if the shoulders of the seated persons seated in the respective seats 1A to 1C come into contact with each other, the seat moving means which is the movable means is activated and In order to avoid contact between the shoulders, a comfortable sitting posture can be taken.

  Further, according to the vehicle rear seat of the second embodiment, the member that connects the seat moving means to the seat frame is driven to move in the vehicle front-rear direction by a motor to move the seat in the vehicle front-rear direction relative to other seats. Since it is set as the structure to which it is made, it can avoid the contact of the shoulders of the seated person who sits next and is easy only by movement of a sheet | seat.

<Fourth embodiment>
In the fourth embodiment, as a movable means, a seat that moves one of the plurality of seats 1A to 1C up and down with respect to the seat cushion 3 of another seat to move the position of the seated person's shoulder. This is an example of cushion moving means. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the vehicle rear seat according to the fourth embodiment, as shown in FIG. 18, when seats 5A to 5C are seated on the three-seat seats 1A to 1C arranged in the same row, the seat on the entrance / exit side The seat cushions 1A and 1C move up and down in the vehicle height direction Z, so that the shoulders 5As, 5Bs, and 5Cs of the adjacent seaters 5A to 5C are separated from each other in the vertical direction to take a comfortable sitting posture. It is made to be able to.

  As shown in FIGS. 19 and 20, the seat cushion moving means includes an airbag 23 provided in the seat cushion 3 and a means for inflating the airbag 23. It is structured to raise and lower the height of the seating surface.

  The airbag 23 is provided in the seat cushion 3 of the seats 1A and 1C on the entrance / exit side. Specifically, the seat cushion 2 is provided so as to be embedded in the cushion material 24 of the side cushion portion 2a that supports the thigh on the entrance / exit side. The seat cushion 2 includes a cushion material 24, a skin 25 that covers the cushion material 24, and a seat frame that is not shown.

  The airbag 23 is inflated as shown in FIG. 20 (A) by introducing air from an inflator, which is a means for inflating the airbag 23, and deflated as shown in FIG. 20 (B) by stopping the introduction of air. It becomes a state. The skin 25 is preferably formed of a material that can be expanded and contracted so as not to stretch when the airbag 23 is inflated.

  The seat cushion moving operation will be described below with reference to FIGS. 21 and 22. As shown in FIG. 11, the control circuit for moving the seat cushion 2 is an occupant detection means (specifically, an occupant detection sensor) that detects that the seats 5A, 5B, and 5c are seated on the seats 1A, 1B, and 1C. ) 14, and an inflator that is a means for inflating the airbag 23, and a seat cushion moving means 26 that includes a control unit 16 that controls the inflation of the airbag 23 in response to detection by the occupant detection sensor 14.

  In the seat cushion up-and-down operation flow of FIG. 22, first, whether or not the occupant detection sensor 14 embedded in the seat back 3 of the central seat 1B is seated on the seat 1B is the seat occupant 5B in the process of step S13. Is detected. When it is determined that the seated person 5B is detected, the control unit 16 proceeds to the next step S14, and when it is determined that the seated person 5B is not detected, the process of step S14 is repeated.

  In the process of step S14, the occupant detection sensor 14 detects whether or not the occupants 5A and 5C are seated on the seats 1A and 1C that are both-end seats on the entrance / exit. When it is determined that the seats 5A and 5C have been detected, the control unit 16 proceeds to the next step S15, and when it is determined that the seats 5A and 5C have not been detected, the process of step S14 is repeated. In the process of step S14, the seats 5A and 5C are seated on the seats 1A and 1C at both ends, respectively, and the case where the seats are seated on only one seat is not included.

  In the process of step S <b> 15, the control unit 16 operates the seat cushion up-and-down moving unit 26 to extract air from the airbag 23. Then, in the process of step S16, the airbag 23 that has been inflated as shown in FIG. 18A is deflated as shown in FIG. 18B. As a result, as shown in FIG. 18 (A), the seats 5A and 5C seated on the entrance / exit side lean toward the inside of the vehicle and the shoulders 5As, 5Bs, and 5Cs come into contact with each other, and the airbag 23 is deflated and side By reducing the height position of the cushion portion 2a, the body is not tilted, so that contact between the shoulders 5As, 5Bs, and 5Cs is avoided as shown in FIG. As a result, it is possible to take an appropriate sitting posture in which the seat back 3 can be seated by pressing the back properly.

  According to the vehicle rear seat of the fourth embodiment, even when the shoulders of the seated persons seated in the respective seats 1A to 1C come into contact with each other, the seat cushion up-and-down means that are movable means are operated to sit next to each other. In order to avoid contact between the shoulders, a comfortable sitting posture can be taken.

  Further, according to the vehicle rear seat of the fourth embodiment, the seat cushion up-and-down means is constituted by the airbag provided on the side cushion portion and the inflator that is a means for inflating the airbag. Therefore, the airbag is inflated. The contact between the shoulders of the seated occupants sitting next to each other can be avoided easily.

  The present invention can be used for a rear seat for a vehicle such as an automobile.

DESCRIPTION OF SYMBOLS 1 Vehicle rear seat 2 Seat cushion 3 Seat back 5A, 5B, 5C Seated person 5As, 5Bs, 5Cs Shoulder 6 Seat frame 8 Seat frame 14 Crew detection sensor (Crew detection means)
DESCRIPTION OF SYMBOLS 15 Seat back moving means 20, 23 Air bag 21 Air bag means 22 Seat moving means 26 Seat cushion vertical movement means

Claims (10)

In a vehicle rear seat with at least three seats arranged in the same row,
Means for detecting an occupant seated on the seat;
Movable means for moving the seat cushion or the seat back;
Shoulder position moving means comprising control means for controlling the movable means,
When the occupant seated on the center seat is detected by the means for detecting the center occupant, the movable means is driven by the control means to prevent contact between the shoulders of the seated occupants sitting by changing the posture of the occupant other than the center A rear seat for a vehicle characterized by the above. The vehicle rear seat according to claim 1,
The movable seat comprises a seat back rotating means for directing the seat back toward the inside of the vehicle. The vehicle rear seat according to claim 1,
The vehicular rear seat is characterized in that the movable means comprises air bag means for inflating an air bag built in the seat back to move the position of a seated person's shoulder. The vehicle rear seat according to claim 1,
The vehicle rear seat is characterized in that the movable means comprises a seat moving means for moving any one of the seats in the vehicle front-rear direction relative to the other seats to move the position of the seated person's shoulder. . The vehicle rear seat according to claim 1,
The movable means comprises seat cushion up-and-down means in which any one of the seat cushions moves up and down in the vehicle height direction with respect to the seat cushion of the other seat to move the position of the seated person's shoulder. A rear seat for vehicles. The vehicle rear seat according to claim 2,
The seat back rotating means has a seat frame in the seat back that is driven to rotate by a motor with a portion extending in the vehicle height direction as a main shaft, and the direction of the seat back is directed to the inside of the vehicle. Sheet. The vehicle rear seat according to claim 3,
The airbag means includes an airbag provided on a side cushion portion of the seat back and a means for inflating the airbag, and the shoulder position is moved by pushing the shoulder of the seated person by the inflation of the airbag. A rear seat for a vehicle. The vehicle rear seat according to claim 4,
The seat moving means is configured to drive a member connected to a seat frame in the seat back in the vehicle front-rear direction with a motor to move the seat in the vehicle front-rear direction with respect to other seats. Rear seat. The vehicle rear seat according to claim 5,
The seat cushion up-and-down means has an airbag provided in the seat cushion and means for inflating the airbag, and the height position of the seat cushion seating surface is raised and lowered by inflation of the airbag. Rear seat for vehicles to be used. The vehicle rear seat according to any one of claims 1 to 9,
The seats are divided into three rows, and when it is detected that a seated person is seated on a central seat and seated persons are seated on both seats, the seat cushions or seat backs on both sides are moved. Rear seat for vehicles.

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