JP2019006150A - Vehicle seat - Google Patents

Abstract

To provide a rotatable vehicle seat which can be rotated in a small space.SOLUTION: A vehicle seat 1 having a seat cushion 7 provided on a floor 2 of a vehicle and a seat back 8 provided on the seat cushion, in which the seat cushion is so provided as to be rotatable around plural rotation axes A, which extend in a substantially vertical direction, with respect to the floor. Between the floor and the seat cushion, it is preferably that a rotary device 4, which enables rotation around one rotation axis selected from the plural rotation axes and regulates rotation around the remaining axes, is provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle seat mounted on a vehicle or the like.

  A seat provided on a floor of an automobile so as to be rotatable about an axis extending in a substantially vertical direction is known (for example, Patent Document 1). Depending on the rotational position of the seat, this seat can realize various seat arrangements suitable for conversations between passengers, breaks, and scenery viewing. When this seat is applied to an autonomous driving vehicle, the driver's seat can take various seat arrangements during automatic driving.

Japanese Patent Laid-Open No. 2006-97780

  Around the seat, there are structures such as doors, pillars, dashboards, and center consoles that constitute the vehicle, so it is difficult to secure a space for rotating the seat. In particular, since a seat back that protrudes rearward is provided at the rear of the seat, it is difficult to avoid contact with the compartment side wall. Therefore, a sheet that can be rotated in a small space while avoiding contact with surrounding structures is desired.

  In view of the above background, an object of the present invention is to enable rotation in a small space in a rotatable vehicle seat.

  In order to solve the above-described problem, an aspect of the present invention provides a vehicle seat (1) having a seat cushion (7) provided on a floor (2) of a vehicle and a seat back (8) provided on the seat cushion. The seat cushion is provided so as to be rotatable with respect to the floor about a plurality of rotation axes (A) extending in a substantially vertical direction.

  According to this configuration, the vehicle seat can be moved to various positions by selecting and rotating one rotation axis from a plurality of rotation axes. Thereby, the vehicle seat can be rotated in a small space so as to avoid surrounding structures.

  Further, in the above aspect, between the floor and the seat cushion, it is possible to rotate around the one rotation axis selected from the plurality of rotation axes, and the remaining rotation. A rotation device (4) that restricts rotation about the axis may be provided.

  According to this configuration, the vehicle seat can be fixed to one rotation axis by the rotation device, and can smoothly rotate while regulating the rotation mode.

  In the above aspect, the rotation device may select the rotation axis that enables rotation according to a rotation direction.

  According to this configuration, the vehicle seat can be rotated so as to avoid surrounding structures by selecting the rotation axis according to the rotation direction.

  In the above aspect, the rotation axis includes a front rotation axis (A1, A2) disposed at a front portion of the seat cushion and a rear rotation axis (A3) disposed at a rear portion of the seat cushion. , A4), and the pivoting device is configured so that the seat is centered on the rear pivot axis when pivoting inwardly with the front portion of the seat cushion directed inward in the width direction of the vehicle with respect to the rear portion. It is preferable that the cushion can be turned.

  According to this configuration, the vehicle seat can avoid contact between the seat back and the structure outside the vehicle in the vehicle width direction when the vehicle is pivoted inward.

  In the above aspect, the rear rotation axis (A3) may be disposed inward in the width direction of the vehicle from the center in the width direction of the seat cushion.

  According to this configuration, the vehicle seat can further avoid contact between the seat back and the structure on the outer side in the vehicle width direction of the vehicle when turning inward.

  In the above aspect, the rotation axis includes a front rotation axis (A1, A2) disposed at a front portion of the seat cushion and a rear rotation axis (A3) disposed at a rear portion of the seat cushion. , A4), and the pivoting device has the seat cushion centered on the front pivot axis when the seat cushion is pivoted outward with the front portion of the seat cushion directed outward in the width direction of the vehicle with respect to the rear portion. It is advisable to enable rotation.

  According to this configuration, the vehicle seat can avoid contact between the front end of the seat cushion and the structure outside the vehicle in the vehicle width direction when the vehicle is pivoted outward.

  Further, in the above aspect, the rotating device includes a plurality of rotating shaft units (17), and the plurality of rotating shaft units are fixed to the floor and are arranged in a first direction in a horizontal direction. An extended lower rail (21), an upper rail (22) that is fixed to the seat cushion and extends in a second direction different from the first direction in the horizontal direction, and is slidably provided on the lower rail. A lower slider (23), an upper slider (24) provided on the upper rail so as to be slidable, and pivotably coupled to the lower slider about an axis extending in a substantially vertical direction. It is good to have a regulating device (25, 26) which selectively regulates movement of the lower slider and movement of the upper slider with respect to the upper rail.

  According to this configuration, it is possible to configure a rotation device that can select and rotate any one of a plurality of rotation axes.

  Further, in the above aspect, the rotating device includes a plurality of rotating members (52, 53, 54) arranged vertically and a plurality of rotations connecting the rotating members adjacent to each other vertically. It is good to have a moving shaft (55, 56) and a restricting device (57, 58) which selectively restricts rotation of the rotating member adjacent vertically.

  According to this configuration, the rotation device that can select and rotate any of the plurality of rotation axes can be simplified.

  In another aspect of the present invention, a lower turning member (72) provided on the floor of the vehicle and an upper turn provided on the lower turning member so as to be rotatable about a turning axis extending in a substantially vertical direction. A rotating device (71) having a moving member (73), a lower slide rail (12) coupled to the upper rotating member, and an upper slide rail (13) provided displaceably on the lower slide rail. It has a slide device (3) provided, a seat cushion (7) coupled to the upper slide rail, and a seat back (8) provided on the seat cushion.

  According to this configuration, even if there is only one pivot axis, the seat cushion is displaced relative to the pivot axis, so that the position of the pivot center of the seat cushion can be changed.

  In the above aspect, the rotation direction of the upper rotation member with respect to the lower rotation member may be regulated according to the position of the upper slide rail with respect to the lower slide rail.

  According to this configuration, by restricting the rotation direction according to the rotation center position of the seat cushion, it is possible to avoid contact between the seat cushion and the seat back and the vehicle structure.

  According to one aspect of the present invention, the vehicle seat has a plurality of rotation axes, and can move to various positions by selecting and rotating one of the rotation axes. it can. Thereby, the vehicle seat can be rotated in a small space so as to avoid surrounding structures.

  Further, in the above aspect, there is provided a turning device that enables turning around one turning axis selected from a plurality of turning axes and restricts turning around the remaining turning axes. Thus, the vehicle seat can fix the rotation axis to one, and can smoothly rotate while regulating the rotation mode.

  In the above aspect, the vehicle seat can be rotated so as to avoid surrounding structures according to the rotation direction by selecting a rotation axis that enables the rotation device to rotate according to the rotation direction. It becomes possible to move.

  Further, in the above aspect, when the seat cushion is pivoted inward, the pivoting device enables the seat cushion to pivot about the rear pivot axis. The contact with the structure in can be avoided.

  Further, in the above aspect, the rear rotation axis is disposed on the vehicle width direction center side of the vehicle in the width direction of the seat cushion, so that the seat back and the vehicle are located outward in the vehicle width direction during the internal rotation. Contact with the structure can be further avoided.

  In the above aspect, when the seat cushion is pivoted outward, the pivoting device enables the seat cushion to pivot about the front pivot axis, so that the front end of the seat cushion and the vehicle outside in the vehicle width direction. Contact with the structure on the side can be avoided.

  Further, in the above aspect, the rotating device that can rotate by selecting one rotating axis from the plurality of rotating axes by configuring the rotating device to include a plurality of rotating shaft units. Can be configured.

  Further, in the above aspect, the rotation device includes a plurality of rotation members, a plurality of rotation shafts that rotatably connect the rotation members, and a restriction device that selectively restricts rotation of the rotation members. With this configuration, it is possible to simplify the rotation device that can rotate by selecting one rotation axis from a plurality of rotation axes.

  A rotating device having a lower rotating member provided on the floor of the vehicle and an upper rotating member provided on the lower rotating member so as to be rotatable about a rotation axis extending in a substantially vertical direction; A lower slide rail coupled to the rotating member, a slide device including an upper slide rail provided to be displaceable on the lower slide rail, a seat cushion coupled to the upper slide rail, and a seat disposed on the seat cushion With the configuration having the back, even if there is only one pivot axis, the seat cushion is displaced relative to the pivot axis, so that the position of the pivot center of the seat cushion can be changed.

  In the above aspect, the seat cushion, the seat back, and the vehicle are configured such that the rotation direction of the upper rotation member with respect to the lower rotation member is regulated according to the position of the upper slide rail with respect to the lower slide rail. Contact with the structure can be avoided.

The perspective view of the sheet | seat which concerns on 1st Embodiment. Exploded perspective view showing slide device and rotating device Sectional drawing which shows one rotation axis unit of rotation apparatus Block diagram showing the seat control system Explanatory drawing which shows the rotation aspect of the sheet | seat at the time of an inner rotation and an outer rotation Side view of the sheet according to the second embodiment The disassembled perspective view which shows the rotation apparatus which concerns on 2nd Embodiment. Side view of the sheet according to the third embodiment Explanatory drawing which shows the rotation aspect at the time of (A) internal rotation of the sheet | seat which concerns on 3rd Embodiment, and (B) external rotation.

  Hereinafter, an embodiment in which a vehicle seat of the present invention is applied to an automobile seat will be described with reference to the drawings. In the following description, the front, rear, left, and right are determined based on the occupant seated on the vehicle seat.

(First embodiment)
As shown in FIG. 1, the seat 1 is provided on a slide device 3 provided on the upper surface of the floor 2 of the vehicle, a turning device 4 provided on the top of the sliding device 3, and an upper portion of the turning device 4. Sheet body 5. The seat 1 may be any of a driver seat, a passenger seat, and a rear seat. In the present embodiment, the seat 1 is configured as a driver's seat disposed in the right front portion of the passenger compartment.

  The floor 2 extends in a substantially horizontal direction. The slide device 3 supports the rotating device 4 and the seat body 5 on the floor 2 so as to be slidable in a substantially horizontal direction with respect to the floor 2. The rotation device 4 is provided in the slide device 3 so as to be rotatable with respect to the floor 2 around a plurality of rotation axes extending in a substantially vertical direction, and the seat body 5 is rotated around the plurality of rotation axes with respect to the floor 2. It is supported rotatably. The seat body 5 includes a seat cushion 7 provided at the upper part of the rotation device 4 and a seat back 8 provided at the rear part of the seat cushion 7.

  As shown in FIGS. 1 and 2, the slide device 3 has a pair of left and right slide rails 11 extending in the front-rear direction. Each slide rail 11 has a lower slide rail 12 and an upper slide rail 13 that are slidable relative to each other. The lower slide rail 12 extends in the front-rear direction and is coupled to the upper surface of the floor 2. The upper slide rail 13 extends in the front-rear direction and is supported by the lower slide rail 12 so as to be displaceable in the front-rear direction. Each slide rail 11 has a lock device (not shown) that restricts the sliding movement of the upper slide rail 13 with respect to the lower slide rail 12.

  As shown in FIGS. 2 and 3, the rotating device 4 includes a lower plate 15 and an upper plate 16 that are opposed to each other in the vertical direction, and four rotating shaft units 17 interposed between the lower plate 15 and the upper plate 16. And have. In the present embodiment, there are four rotating shaft units 17, but in other embodiments, there may be a plurality of rotating shaft units 17 such as two or three. The lower plate 15 is a plate-like member whose surface faces up and down, and is coupled to the upper portions of the left and right upper slide rails 13. The upper plate 16 is a plate-like member whose surface faces up and down, and is coupled to the lower portion of the seat cushion 7.

  The four rotating shaft units 17 are arranged at the front left part, the front right part, the rear left part, and the rear right part between the lower plate 15 and the upper plate 16. Each rotating shaft unit 17 includes a lower rail 21, an upper rail 22, a lower slider 23, an upper slider 24, a lower restriction member 25, and an upper restriction member 26.

  The lower rail 21 is coupled to the upper surface of the lower plate 15 and extends in the first direction in the horizontal direction. The lower rail 21 is fixed to the floor 2 via the lower plate 15 and the slide device 3. The upper rail 22 is coupled to the upper plate 16 and extends in a second direction different from the extending direction (first direction) of the lower rail 21 in the horizontal direction. The upper rail 22 is fixed to the seat cushion 7 via the upper plate 16. In the present embodiment, the first direction that is the extending direction of the lower rail 21 is the front-rear direction, and the second direction that is the extending direction of the upper rail 22 is the left-right direction (vehicle width direction) orthogonal to the first direction. is there. The upper rail 22 is disposed above the lower rail 21. When viewed from above, the upper rail 22 is disposed at a position intersecting with the lower rail 21.

  The lower rail 21 includes a lower rail lower wall 21A coupled to the lower plate 15, a pair of lower rail side walls 21B protruding upward from both side edges of the lower rail lower wall 21A, and upper ends of the lower rail side walls 21B. A pair of lower rail upper walls 21C projecting toward each other. The lower rail lower wall 21A, the pair of lower rail side walls 21B, and the pair of lower rail upper walls 21C extend in the first direction, and a lower rail slit 21D extending in the first direction is formed between the pair of lower rail upper walls 21C. Yes.

  The upper rail 22 includes an upper rail upper wall 22A coupled to the upper plate 16, a pair of upper rail side walls 22B projecting downward from both side edges of the upper rail upper wall 22A, and a lower end of each upper rail side wall 22B. A pair of upper rail lower walls 22C projecting toward each other. The upper rail upper wall 22A, the pair of upper rail side walls 22B, and the pair of upper rail lower walls 22C extend in the second direction, and an upper rail slit 22D extending in the second direction is formed between the pair of upper rail lower walls 22C. Yes.

  The lower slider 23 passes through the lower rail slit 21D and is locked to the edges of the pair of lower rail upper walls 21C. The lower slider 23 is restricted from moving up and down by coming into contact with the lower rail upper wall 21C, and is slidable in the extending direction of the lower rail 21 by moving in the lower rail slit 21D. .

  The upper slider 24 passes through the upper rail slit 22D and is locked to the edge of the pair of upper rail lower walls 22C. The upper slider 24 is restricted from moving up and down by coming into contact with the lower rail 22C of the upper rail, and is slidable in the extending direction of the upper rail 22 by moving in the upper rail slit 22D. .

  A shaft portion 23A that protrudes vertically upward is formed at the upper end of the lower slider 23, and a bearing hole 24A having a circular cross section that is recessed vertically upward is formed at the lower end of the upper slider 24. The shaft portion 23A and the bearing hole 24A are provided with known pull-out prevention means such as a C-ring. Since the shaft portion 23A is rotatably received in the bearing hole 24A, the lower slider 23 and the upper slider 24 are coupled to each other so as to be rotatable about an axis extending in the vertical direction. The rotational axes of the lower slider 23 and the upper slider 24 are defined as rotational axes A (A1, A2, A3, A4) of the rotational shaft unit 17.

  The lower regulating member 25 includes a lower engaging member 31 disposed between the lower end of the lower slider 23 and the lower rail lower wall 21A inside the lower rail 21, and the lower engaging member 31 and the lower rail lower wall 21A. A lower biasing member 32 that is interposed therebetween and biases the lower engagement member 31 toward the lower slider 23 and a lower biasing member 32 that is coupled to the lower engagement member 31 and resists the biasing force of the lower biasing member 32. A lower actuator 33 that moves the combined member 31 to the lower rail lower wall 21A side. The upper restricting member 26 includes an upper engaging member 35 disposed between the upper end of the upper slider 24 and the upper rail upper wall 22A inside the upper rail 22, and the upper engaging member 35 and the upper rail upper wall 22A. An upper biasing member 36 that is interposed between the upper biasing member 36 and biases the upper engagement member 35 toward the upper slider 24. The upper biasing member 36 is coupled to the upper engagement member 35 and resists the biasing force of the upper biasing member 36. And an upper actuator 37 for moving the combined member 35 to the upper rail upper wall 22A side. The lower urging member 32 and the upper urging member 36 may be a compression coil spring or a leaf spring.

  The lower engagement member 31 regulates the movement of the lower slider 23 relative to the lower rail 21 by engaging with the lower surface of the lower slider 23. Engaging teeth may be formed on the contact surfaces of the lower engagement member 31 and the lower slider 23. The configurations of the upper engagement member 35 and the upper slider 24 are the same as the configurations of the lower engagement member 31 and the lower slider 23.

  The lower actuator 33 and the upper actuator 37 may be solenoids, for example. The lower actuator 33 includes a main body portion 33A coupled to the lower plate 15, and a drive shaft 33B that penetrates the lower rail lower wall 21A from the main body portion 33A and is coupled to the lower engagement member 31. The upper actuator 37 has a main body portion 37A coupled to the upper plate 16, and a drive shaft 37B coupled to the upper engagement member 35 through the upper rail upper wall 22A from the main body portion 37A.

  In the locked state of the rotating shaft unit 17, the lower actuator 33 is not driven, the lower engagement member 31 urged by the lower urging member 32 is engaged with the lower slider 23, and the lower slider 23 is moved relative to the lower rail 21. Movement is restricted. Further, the upper actuator 37 is not driven, and the upper engagement member 35 urged by the upper urging member 36 is engaged with the upper slider 24, so that the movement of the upper slider 24 with respect to the upper rail 22 is restricted. At this time, the lower slider 23 and the upper slider 24 can rotate with respect to each other about the rotation axis A.

  In the unlocked state of the rotating shaft unit 17, the lower actuator 33 is driven, so that the lower engagement member 31 moves away from the lower slider 23 against the urging force of the lower urging member 32, and the lower slider 23 becomes movable with respect to the lower rail 21. Further, by driving the upper actuator 37, the upper engagement member 35 moves away from the upper slider 24 against the urging force of the upper urging member 36, and the upper slider 24 is movable with respect to the upper rail 22. Become.

  The rotating device 4 can fix the position of the upper plate 16 with respect to the lower plate 15 by bringing all four rotating shaft units 17 into a locked state. The rotating device 4 puts one rotating shaft unit 17 selected from the four rotating shaft units 17 into a locked state and puts the other three rotating shaft units 17 into an unlocked state, thereby selecting a selected rotation. The upper plate 16 can be rotated relative to the lower plate 15 about the rotation axis A of the moving shaft unit 17. By bringing all four rotating shaft units 17 into the unlocked state, the upper plate 16 can be displaced and rotated in the horizontal direction with respect to the lower plate 15.

  As shown in FIG. 4, the seat 1 has a control device 40. The control device 40 is an electronic control device that includes a CPU, a memory, and a driver. Connected to the control device 40 are an inner rotation switch 41 and an outer rotation switch 42 for the occupant to select the rotation direction of the seat 1, and the actuators 33 and 37 of the four rotation shaft units 17. . Here, inward rotation means that the front end of the seat cushion 7 rotates inward in the vehicle width direction from the initial position, and outward rotation means that the front end of the seat cushion 7 moves outward in the vehicle width direction from the initial position. It means to turn toward.

  The inner rotation switch 41 and the outer rotation switch 42 output an ON signal to the control device 40 while being operated by the occupant. The inner rotation switch 41 and the outer rotation switch 42 are provided on the side surface of the seat cushion 7. The control device 40 controls the driving of the actuators 33 and 37 of the four rotary shaft units 17 to independently bring the four rotary shaft units 17 into the locked state or the unlocked state.

  The control device 40 is operated when the inner rotation switch 41 and the outer rotation switch 42 are not operated, when the inner rotation switch 41 is operated, and when the outer rotation switch 42 is operated. The locked state and unlocked state of the two rotating shaft units 17 are changed.

  In the present embodiment, when the control device 40 has not received an ON signal from any of the inner rotation switch 41 and the outer rotation switch 42, all the rotation shaft units 17 are locked. Thereby, the rotation of the rotation device 4 is restricted, and the seat cushion 7 cannot be displaced with respect to the floor 2.

  Further, while receiving the ON signal from the inner rotation switch 41, the control device 40 locks the rear left rotation shaft unit 17, and the remaining front left, front right and rear right rotation shaft units 17. To unlock state. As a result, the rotation device 4 can rotate about the rotation axis A3 of the rear left rotation shaft unit 17, and the seat cushion 7 can move to the floor 2 on the rear left rotation shaft unit 17. It is possible to rotate around the rotation axis A3.

  Further, while receiving the ON signal from the external rotation switch 42, the control device 40 locks the front right rotation shaft unit 17, and the remaining front left, rear left and rear right rotation shaft units 17. To unlock state. Accordingly, the rotation device 4 can rotate about the rotation axis A <b> 2 of the front right rotation shaft unit 17, and the seat cushion 7 can move to the floor 2 on the front right rotation shaft unit 17. Can be rotated around the rotation axis A2.

  In the seat 1, the rotation axis A serving as the rotation center changes between when the inner rotation switch 41 is operated and when the outer rotation switch 42 is operated. That is, the rotation axis A that enables the rotation can be selected according to the rotation direction of the seat 1.

  As shown in FIG. 5, when the inner rotation switch 41 is operated, the seat cushion 7 rotates about the rotation axis A <b> 3 of the rear left rotation shaft unit 17, thereby causing the seat back 8 and the seat 1. It is possible to avoid contact with the vehicle compartment side wall 45 located on the side of the vehicle. When the seat 1 is a driver's seat provided in the front right part of the passenger compartment, the passenger compartment side wall 45 is configured by a door, a pillar, or the like located to the right of the seat 1. When the seat body 5 pivots inward, the pivot axis A3 (or A4) disposed on the rear side of the center of the seat cushion 7 is selected, whereby the seat body 5 and the vehicle Contact with the chamber side wall 45 can be avoided. Further, when the seat body 5 rotates inwardly, it is more preferable that the rotation axis A3 is selected as the rotation axis A3 disposed behind the center of the seat cushion 7 and on the inner side in the vehicle width direction.

  When the outer rotation switch 42 is operated, the seat cushion 7 rotates about the rotation axis A <b> 2 of the front right rotation shaft unit 17, so that the front end of the seat cushion 7 and the vehicle compartment side wall 45 contact with each other. Can be avoided. When the seat body 5 pivots outwardly, the pivot axis A2 (or A1) disposed on the front side of the center of the seat cushion 7 is selected as the pivot axis A, whereby the seat body 5 and the passenger compartment side wall 45 are selected. Contact with can be avoided.

(Second Embodiment)
The seat 50 according to the second embodiment is different from the seat 1 according to the first embodiment in the configuration of the rotation device 51. As shown in FIGS. 6 and 7, the rotating device 51 includes a first plate 52, a second plate 53, and a third plate 54 that are vertically arranged, and a first plate 52 and a second plate that extend vertically. 53, a first rotating shaft 55 that rotatably connects, a second rotating shaft 56 that extends vertically to connect the second plate 53 and the third plate 54, and a first plate 52 and a second plate. The first rotation restricting device 57 provided between the second plate 53 and the third plate 54 is provided.

  The first rotation shaft 55 is disposed at the front portion of the rotation device 4 (front side of the center in the front-rear direction), and the second rotation shaft 56 is the rear portion of the rotation device 4 (rear side of the center in the front-rear direction). Part). Further, the first rotation shaft 55 may be disposed closer to the vehicle interior than the center of the rotation device 4 in the vehicle width direction, and the second rotation shaft 56 is the vehicle width of the rotation device 4 of the rotation device 4. You may arrange | position outside a vehicle interior rather than the center in a direction.

  The first rotation restricting device 57 and the second rotation restricting device 58 are connected to the control device 40 and controlled by the control device 40. The first rotation restricting device 57 is a device that selectively restricts the relative rotation of the first plate 52 and the second plate 53, and the second rotation restricting device 58 is a relative of the second plate 53 and the third plate 54. It is a device that selectively regulates rotation. The first rotation restricting device 57 and the second rotation restricting device 58 may include, for example, a solenoid and a connecting pin that advances and retreats by the solenoid, and adjacent plates may be connected by the connecting pin. Moreover, the 1st rotation control apparatus 57 and the 2nd rotation control apparatus 58 are electromagnetic clutches, and you may couple | bond an adjacent plate with magnetic force.

  The control device 40 places the first rotation restricting device 57 in the locked state and the second rotation restricting device 58 in the unlocked state when receiving the ON signal from the inner turning switch 41. Thereby, the rotation around the first rotation shaft 55 (rotation axis A5) is restricted, and the rotation around the second rotation shaft 56 (rotation axis A6) becomes possible. Further, the control device 40 places the second rotation restricting device 58 in the locked state and the first rotation restricting device 57 in the unlocked state when receiving the ON signal from the outer turning switch 42. Thereby, the rotation of the rotation device 51 around the second rotation shaft 56 (rotation axis A6) is restricted, and the rotation about the first rotation shaft 55 (rotation axis A5) is restricted. It becomes possible. Further, the control device 40 puts the first rotation restricting device 57 and the second rotation restricting device 58 into a locked state when no ON signal is received from either the inner rotation switch 41 or the outer rotation switch 42. . Thereby, the rotation of the rotation device 51 is restricted.

  In the present embodiment, the rotation device 51 includes three rotation members of the first to third plates 52 to 54. However, in other embodiments, the number of rotation members may be a plurality of four or more. . And it is good to connect each of adjacent rotation member with a rotation axis | shaft and a rotation control apparatus. By comprising in this way, the rotation axis which can be selected of the rotation apparatus 51 can be increased.

(Third embodiment)
The seat 70 according to the third embodiment differs from the seat 1 according to the first embodiment in the configuration of the rotation device 71 and the arrangement of the slide device 3 and the rotation device 71 is different. As shown in FIG. 8, the rotation device 71 is provided on the lower rotation member 72 and the lower rotation member 72 provided on the floor 2 so as to be rotatable about a rotation axis A <b> 7 extending in a substantially vertical direction. An upper rotating member 73 is provided. The lower rotating member 72 and the upper rotating member 73 are formed in a plate shape whose surfaces face up and down. A rotation axis A7 of the rotation device 71 is disposed at substantially the center of the rotation device 71 in plan view. Each lower slide rail 12 of the slide device 3 is provided on the upper surface of the upper rotation member 73. A seat cushion 7 is provided at the upper end of each upper slide rail 13. Each slide rail 11 is arrange | positioned back and forth in the initial state.

  As shown in FIG. 9, a rotation direction regulating device 74 is provided between the upper rotation member 73 and the seat cushion. The rotation direction regulating device 74 includes a regulation wall 75 provided on the upper surface of the upper rotation member 73, and a front stopper 76 and a rear stopper 77 that protrude downward from the lower surface of the seat cushion 7. The restriction wall 75 extends in the radial direction about the rotation axis A7. The front stopper 76 is provided at the lower front end of the seat cushion 7, and the rear stopper 77 is provided at the lower rear end of the seat cushion 7. The front stopper 76 and the rear stopper 77 are arranged on the inside of the regulation wall 75 in the vehicle width direction. The length of the regulation wall 75 in the front-rear direction is shorter than the distance between the front stopper 76 and the rear stopper 77.

  In the seat 70, the seat body 5 can slide with respect to the rotation device 71 by the slide device 3. Therefore, the relative position between the rotation axis A7 of the rotation device 71 and the sheet body 5 changes. As shown in FIG. 9A, the rotation axis A <b> 7 can be arranged on the front side of the sheet main body 5 by arranging the sheet main body 5 behind the rotation device 71 by the slide device 3. At this time, the front stopper 76 is disposed inward in the vehicle width direction of the front end of the restriction wall 75, and the inner end of the seat cushion 7 is restricted by the front end of the restriction wall 75 and the front stopper 76 coming into contact with each other. Thereby, the seat cushion 7 can only rotate outward.

  As shown in FIG. 9B, the rotational axis A <b> 7 can be disposed on the rear side of the seat body 5 by placing the seat body 5 forward with respect to the pivot device 71 by the slide device 3. At this time, the rear stopper 77 is disposed inward in the vehicle width direction at the rear end of the restriction wall 75, and the outer end of the seat cushion 7 is restricted by the rear end of the restriction wall 75 and the rear stopper 77 contacting each other. . Thereby, the seat cushion 7 can only turn inward. As described above, the rotation direction of the upper rotation member 73 relative to the lower rotation member 72 is regulated according to the position of the upper slide rail 13 with respect to the lower slide rail 12.

  Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. The configuration of the rotating devices 4, 51, 71 described above is an example, and the present invention is not limited to these. The rotation device may be any device that enables rotation about one rotation axis selected from a plurality of rotation axes and restricts rotation about the remaining rotation axes. Different structures can be applied.

1, 50, 70: Seat 2: Floor 3: Slide devices 4, 51, 71: Rotating device 7: Seat cushion 8: Seat back 11: Slide rail 12: Lower slide rail 13: Upper slide rail 15: Lower plate 16 : Upper plate 17: Rotating shaft unit 21: Lower rail 22: Upper rail 23: Lower slider 24: Upper slider 25: Lower regulating member 26: Upper regulating member 31: Lower engaging member 32: Lower urging member 33: Lower Actuator 35: Upper engagement member 36: Upper biasing member 37: Upper actuator 40: Control device 41: Inner rotation switch 42: Outer rotation switch 45: Cabin side wall 52: First plate 53: Second plate 54: Third plate 55: First rotation shaft 56: Second rotation shaft 57: First rotation restriction device 58: Second rotation restriction device 72: Bottom MEMBER 73: exceeded MEMBER 74: turning direction regulation device A (A1 to A7): rotation axis

Claims (10)

A vehicle seat having a seat cushion provided on a floor of the vehicle and a seat back provided on the seat cushion,
The vehicle seat, wherein the seat cushion is provided so as to be rotatable with respect to the floor around a plurality of rotation axes extending in a substantially vertical direction.   Between the floor and the seat cushion, it is possible to turn around one turning axis selected from a plurality of turning axes, and turn around the remaining turning axes. The vehicle seat according to claim 1, further comprising a turning device for restricting the vehicle.   The vehicle seat according to claim 2, wherein the rotation device selects the rotation axis that enables rotation according to a rotation direction. The pivot axis includes a front pivot axis disposed at a front portion of the seat cushion and a rear pivot axis disposed at a rear portion of the seat cushion,
The pivoting device enables the seat cushion to pivot about the rear pivoting axis when pivoting inwardly with the front portion of the seat cushion directed inward in the width direction of the vehicle with respect to the rear portion. The vehicle seat according to claim 3.   The vehicle seat according to claim 4, wherein the rear rotation axis is disposed inward in the width direction of the vehicle from the center in the width direction of the seat cushion. The pivot axis includes a front pivot axis disposed at a front portion of the seat cushion and a rear pivot axis disposed at a rear portion of the seat cushion,
The pivoting device enables the seat cushion to pivot about the front pivot axis when the seat cushion is pivoted outward with the front portion of the seat cushion facing the rear in the width direction of the vehicle. The vehicle seat according to any one of claims 3 to 5, wherein the vehicle seat is provided. The rotating device has a plurality of rotating shaft units,
Each of the plurality of rotating shaft units is
A lower rail fixed to the floor and extending in a first direction in the horizontal direction;
An upper rail fixed to the seat cushion and extending in a second direction different from the first direction in the horizontal direction;
A lower slider provided on the lower rail so as to be slidable;
An upper slider provided on the upper rail so as to be slidable and rotatably coupled to the lower slider about an axis extending in a substantially vertical direction;
The control member according to any one of claims 2 to 6, further comprising a restricting member that selectively restricts movement of the lower slider with respect to the lower rail and movement of the upper slider with respect to the upper rail. Vehicle seats.   The rotating device includes a plurality of rotating members arranged vertically, a plurality of rotating shafts that rotatably connect the rotating members adjacent vertically, and a rotation of the rotating members adjacent vertically. The vehicle seat according to any one of claims 2 to 6, further comprising a restriction device that selectively restricts movement. A rotation device provided with a lower rotation member provided on the floor of the vehicle, and an upper rotation member provided on the lower rotation member so as to be rotatable about a rotation axis extending in a substantially vertical direction;
A slide device including a lower slide rail coupled to the upper rotation member and an upper slide rail provided to be displaceable on the lower slide rail;
A seat cushion coupled to the upper slide rail;
A vehicle seat comprising a seat back provided on the seat cushion.   The vehicle seat according to claim 9, wherein a rotation direction of the upper rotation member with respect to the lower rotation member is regulated according to a position of the upper slide rail with respect to the lower slide rail.

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