JP2015150954A - Vehicle rotary seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vehicle rotary seat capable of simultaneously changing a seat direction and the height of a seat seating surface, and ensuring greater vertical moving amount of the seat seating surface even if the rotational angle of the seat is restricted.SOLUTION: A coupling member 42 provided at a seat body 12 and a coupling member 44 fixed to a base section 22 are threaded with each other so as to be relatively rotatable about an axis in a seat vertical direction. Owing to this, when the seat body 12 rotates about the axis in the seat vertical direction, the seat body 12 moves in the seat vertical direction. Furthermore, when the seat body 12 rotates, a rotation mechanism 52 causes the coupling member 44 rotatably fixed to the base section 22 to rotate in an opposite direction to the rotational direction of the seat body 12, with respect to the seat body 12.

Description

  The present invention relates to a vehicular rotating seat.

  The following Patent Document 1 discloses an invention related to a vehicle seat device. In this vehicle seat device, a rotating plate provided below the seat cushion and a fixed base provided on the vehicle floor are connected via a screw-type height adjusting mechanism. Thereby, when the seat is rotated, the change of the seat direction and the change of the height of the seat seating surface can be simultaneously performed, and as a result, the passengers can get on and off.

Japanese Patent Laid-Open No. 10-278639

  However, in the case of the prior art described in Patent Document 1, it is conceivable that the vertical movement amount of the seat seating surface is insufficient.

  Specifically, in the above-described prior art, the height adjustment mechanism portion includes a female screw portion provided integrally with the rotating plate, and a male screw portion provided integrally with the fixed base and screwed into the female screw portion. It is configured. For this reason, the seat seating surface moves in the vertical direction by the screw feed amount corresponding to the rotation angle of the seat. On the other hand, the range of the rotation angle of the seat is limited to a range from a standard position where the seat faces the vehicle front side to a boarding / alighting position where the seat faces the door side. For this reason, when the passenger gets on and off, the internal thread portion provided on the rotating plate is in relation to the external thread portion provided on the fixed base from the standard position where the seat faces the front side of the vehicle, and the entrance / exit position where the seat faces the door side. It can only rotate within the range. Therefore, the amount of movement of the seat seating surface in the vertical direction is ensured only by the screw feed amount corresponding to the rotation angle from the standard position where the seat faces the front side of the vehicle to the boarding / alighting position where the seat faces the door side. I can't.

  In consideration of the above facts, the present invention can change the seat orientation and the seat seating surface height at the same time. Even if the rotation angle of the seat is limited, the seat seating surface has a larger height. It is an object to obtain a vehicular rotating seat capable of obtaining a movement amount.

  A rotating seat for a vehicle according to the first aspect of the present invention includes a seat body configured to include a seat cushion on which an occupant is seated, a base portion provided below the seat body and disposed on a vehicle body floor, A first connecting portion provided on the seat body and provided with either one of a male screw portion and a female screw portion; and fixed to the base portion so as to be rotatable about an axis in a seat vertical direction, the male screw portion and the female screw portion. Any one of the first connection part and the second connection part screwed so as to be relatively rotatable around the axis, and when the sheet body rotates around the axis, the sheet body A rotation mechanism that rotates the second connecting portion in a direction opposite to the rotation direction of the sheet main body.

  According to the first aspect of the present invention, the first connecting portion provided in the seat body and the second connecting portion fixed to the base member are screwed together so as to be relatively rotatable about the axis. For this reason, when the seat body is rotated around the axis in the seat vertical direction, the seat body moves in the seat vertical direction.

  By the way, since the vertical movement amount of the seat body is proportional to the rotation angle of the seat body, when the rotational angle of the seat body is limited, the vertical movement amount of the seat body is also limited.

  Here, in the present invention, the rotation mechanism is provided, and when the seat main body rotates, the second connecting portion that is rotatably fixed to the base portion is rotated by the rotation mechanism with respect to the seat main body. Rotate in the opposite direction. That is, when the seat body is rotated, the first connecting portion rotates relative to the second connecting portion by an angle obtained by combining the rotation angle of the seat body and the rotation angle of the second connecting member. As a result, in addition to the vertical movement amount of the sheet main body due to the rotation of the sheet main body, the vertical movement amount of the sheet main body due to the second connecting portion rotating in the direction opposite to the rotation direction of the sheet main body can be obtained.

  As described above, the vehicular rotating seat according to the first aspect of the present invention can change the seat orientation and the seat seating surface at the same time and limit the rotation angle of the seat. Even if it is done, it has the outstanding effect that the larger amount of vertical movement of a seat seating surface can be obtained.

It is the disassembled perspective view seen from the diagonally forward side of the vehicle outer side which shows the principal part of the rotation seat for vehicles concerning this embodiment. It is an expanded sectional view which shows the state cut | disconnected along 2-2 line shown in FIG. It is the disassembled perspective view seen from the diagonal front side of the vehicle outer side which shows the motion of the principal part when the seat main body of the rotation seat for vehicles concerning this embodiment rotates. (A) is the figure which looked at the movement of the seat at the time of boarding / alighting of the vehicle rotation seat which concerns on this embodiment from the vehicle front side, (B) is the time of height adjustment of the vehicle rotation seat which concerns on this embodiment It is the figure which looked at the movement of the seat in from the vehicle front side. It is the perspective view seen from the diagonal front side of the vehicle outer side which shows the modification of this embodiment.

  Hereinafter, an embodiment of a vehicle rotating seat according to the present invention will be described with reference to FIGS. 1 to 5. Note that an arrow FR appropriately shown in each figure indicates the vehicle front side, and an arrow UP indicates the vehicle upper side. Furthermore, the arrow IN indicates the inner side in the vehicle width direction.

  As shown in FIGS. 1 and 4, a vehicular rotating seat (hereinafter, also simply referred to as “seat”) 10 according to the present embodiment is a front seat mounted on the front side of a vehicle in a vehicle cabin. Yes. The seat 10 includes a seat body 12, a base portion 22 that supports the seat body 12 on the vehicle body floor 20, a connecting mechanism 28 that connects the seat body 12 and the base portion 22, and a rotation mechanism 52. Yes.

  The seat body 12 includes a seat cushion 14 that supports the buttocks of a seated occupant, and a seat back 16 having a lower end connected to an end portion of the seat cushion 14 on the seat rear side. The seat back 16 is arranged in a standing state with respect to the seat cushion 14, and the seat back 16 is connected to the seat cushion 14 so as to be tiltable. A headrest 18 is provided on the seatback 16 above the seat, and the headrest 18 is supported by the seatback 16. Thus, the upper body of the seated occupant is supported by the seatback 16 and the head of the seated occupant is supported by the headrest 18.

  On the other hand, the base portion 22 is disposed below the seat body 12 and includes a base plate 24 disposed on the vehicle body floor 20 and leg portions 26 provided on the base plate 24. The base plate 24 is composed of a rectangular plate material in plan view, and is fixed to the vehicle body floor 20 via side rails (not shown) arranged on the lower side of the seat at both ends in the seat width direction. On the other hand, the leg portion 26 is formed of a plate material bent in a trapezoidal shape when viewed from the side of the seat, and is attached to both ends of the upper surface of the base plate 24 in the seat width direction by attachment means (not shown).

  The connection mechanism 28 includes a support plate 30 that supports the seat body 12, a link mechanism 34 that connects the support plate 30 and the base portion 22, a connection member 42 as a first connection portion, and a connection as a second connection portion. A member 44 and support plates 46 and 50 are included.

  The support plate 30 is made of a rectangular plate material in plan view, and has sufficient strength to support the seat body 12 and the seated occupant. A pair of left and right link mechanisms 34 are arranged on the sheet lower side of both ends of the support plate 30 in the sheet width direction.

  The link mechanism 34 includes a connecting link member 36, a first arm member 38, and a second arm member 40 that are disposed with the longitudinal direction of the seat as a longitudinal direction, and is configured as an X arm link having an X shape in a side view. . Specifically, an attachment portion (not shown) is provided at an end portion of the connecting link member 36 on the seat rear side, and an end portion of the first arm member 38 on the seat rear side is connected to the attachment portion via a link pin (not shown). It is pivotally supported so that it can rotate. The first arm member 38 extends from the attachment portion of the connecting link member 36 toward the front lower side of the seat, and a roller (not shown) is provided at the end of the first arm member 38 on the front side of the seat. It has been. Thus, the end portion of the first arm member 38 on the front side of the seat is movable in the seat front-rear direction with respect to the upper wall portion 26A of the leg portion 26.

  On the other hand, an attachment portion (not shown) is also provided at the end portion on the seat rear side of the upper wall portion 26A of the leg portion 26, and the end portion on the seat rear side of the second arm member 40 is connected to the attachment portion. A shaft is rotatably supported via a pin. The second arm member 40 extends from the mounting portion of the leg portion 26 toward the upper front side of the seat, and a roller (not shown) is provided at the end of the second arm member 40 on the front side of the seat. ing. As a result, the end portion of the second arm member 40 on the front side of the seat is movable in the seat front-rear direction with respect to the connecting link member 36. The central portion of the first arm member 38 and the central portion of the second arm member 40 are connected to each other by a link pin (not shown). In the link mechanism 34 configured as described above, the connecting link member 36 is displaced in the vertical direction of the seat while being held horizontally. Further, since the support plate 30 described above is attached to the connection link member 36 by attachment means (not shown), the support plate 30 can be moved in the vertical direction of the seat while being held horizontally.

  As shown in FIGS. 1 and 2, the connecting member 42 is provided in a disc-shaped attachment portion 42A joined to the lower surface of the seat cushion 14 and in the central portion of the attachment portion 42A and toward the lower side of the seat. And a cylindrical female screw portion 42B extending in this manner. The connecting member 42 is supported by the support plate 30 described above via a support board 46.

  The support plate 46 has a circular bottom wall portion 46A in plan view, a peripheral wall portion 46B formed along the periphery of the bottom wall portion 46A, and the center of the bottom wall portion 46A on the upper surface of the peripheral wall portion 46B. And engaging portions 46C formed at two positions which are symmetrical positions. Further, the diameter of the inner peripheral surface of the peripheral wall portion 46 </ b> B of the support plate 46 is set to the same length as the diameter of the attachment portion 42 </ b> A of the connecting member 42. Further, an insertion hole 48 through which the female screw portion 42B of the connecting member 42 can be inserted is formed in the center portion of the bottom wall portion 46A of the support board 46. On the other hand, the insertion hole 48 is also formed in the center portion of the support plate 30. The insertion hole 32 set to the same size as is formed. The support plate 46 is arranged on the upper surface of the support plate 30 so that the center of the insertion hole 48 of the support plate 46 and the center of the insertion hole 32 of the support plate 30 coincide with each other in plan view, and is attached to the support plate 46 (not shown). It is attached to the support plate 30 by means.

  Further, from the upper side of the seat of the support plate 46, the female screw portion 42B of the connection member 42 is inserted into the insertion hole 48 of the support plate 46 and the insertion hole 32 of the support plate 30, and the attachment portion 42A of the connection member 42 and The bottom wall portion 46 </ b> A of the support board 46 is in contact. As a result, the connecting member 42 is attached to the supporting plate 46 so as to be rotatable about the axis of the female screw portion 42B of the connecting member 42 (axis in the vertical direction of the seat) with respect to the supporting plate 46 and thus the supporting plate 30. Yes. Further, a locking groove (not shown) corresponding to the locking portion 46 </ b> C of the support board 46 is formed on the outer peripheral surface of the attachment portion 42 </ b> A of the connecting member 42 along the outer peripheral surface. For this reason, in a state where the connecting member 42 is attached to the support plate 46, the locking portion 46 </ b> C of the support plate 46 is locked to a locking groove provided in the mounting portion 42 </ b> A of the connecting member 42. The displacement of the member 42 in the vertical direction of the sheet is restricted. In addition, a surface treatment or the like is applied to a portion where the connecting member 42 and the supporting plate 46 contact, such as the inner peripheral surface of the peripheral wall portion 46B of the supporting plate 46, and the connecting member 42 is smooth with respect to the supporting plate 46. It is possible to rotate. The connecting member 42 may be fixed to the support plate 30 by using a bearing or the like instead of the support board 46.

  On the other hand, the connecting member 44 is a disk-shaped mounting portion 44A and a male screw that is provided at the center of the mounting portion 44A and is a columnar shape that extends toward the upper side of the seat and can be screwed into the female screw portion 42B. Part 44B. Further, the portion of the male screw portion 44B on the lower side in the vertical direction of the sheet is not threaded, and a winding portion 44C around which a wire 62 described later is wound is formed, and the winding portion 44C includes a wire. A locking portion (not shown) in which one end portion of 62 is locked is provided. Furthermore, along the boundary between the winding portion 44C and the threaded portion of the male screw portion 44B, a protruding portion 44D is formed that protrudes outward in the circumferential direction of the male screw portion 44B. The connecting member 44 is supported by the base plate 24 of the base portion 22 described above via the support board 50.

  The support plate 50 has a circular bottom wall 50A in plan view, a peripheral wall 50B formed along the periphery of the bottom wall 50A, and the center of the bottom wall 50A on the upper surface of the peripheral wall 50B. And engaging portions 50C formed at two positions which are symmetrical positions. Further, the diameter of the inner peripheral surface of the peripheral wall portion 50 </ b> B of the support board 50 is set to the same length as the diameter of the attachment portion 44 </ b> A of the connecting member 44. And the support board 50 is arrange | positioned in the center part of the base board 24 of the base part 22, and is attached to the said base board 24 by the attachment means which is not shown in figure.

  The connecting member 44 is attached to the support plate 50 in a state where the attachment portion 44A of the connection member 44 and the bottom wall portion 50A of the support plate 50 are in contact with each other. As a result, the connecting member 44 can be rotated around the axis (in the vertical direction of the seat) of the male screw portion 44B of the connecting member 42 with respect to the support plate 50 and the base plate 24 of the base portion 22. Furthermore, a locking groove (not shown) corresponding to the locking portion 50 </ b> C of the support board 50 is formed on the outer peripheral surface of the attachment portion 44 </ b> A of the connecting member 44 along the outer peripheral surface. For this reason, in a state where the connecting member 44 is attached to the support plate 50, the locking portion 50C of the support plate 50 is locked in the locking groove provided in the attachment portion 44A of the connecting member 44, and the connection The displacement of the member 44 in the vertical direction of the sheet is restricted. The seat body 12 and the base portion 22 are connected by the female screw portion 42B of the connecting member 42 being screwed into the male screw portion 44B of the connecting member 44. Note that a surface treatment or the like is applied to a portion where the connecting member 44 and the supporting plate 50 come into contact, such as an inner peripheral surface of the peripheral wall portion 50 </ b> B of the supporting plate 50, and the connecting member 44 is smooth against the supporting plate 50. It is possible to rotate. Further, the connecting member 44 may be fixed to the base plate 24 using a bearing or the like instead of the support board 50.

  Here, in this embodiment, the rotation mechanism 52 is configured including the locking portion 54, the movable locking portion 58 and the wire (power transmission means) 62. Hereinafter, the rotation mechanism 52, which is a main part of the present invention, will be described in detail with reference to FIG.

  The locking portion 54 is provided integrally with the support plate 30 on the outer side in the seat width direction (the outer side in the vehicle width direction) at the edge of the support plate 30 on the front side of the seat, and an insertion hole 56 is formed.

  On the other hand, the movable locking portion 58 includes a so-called J hook (locking member) 60 having a J-shaped cross section, a rail portion (not shown) to which the J hook 60 is attached, and a coil spring (not shown) that biases the J hook 60 (not shown). Biasing means). The rail portion to which the J hook 60 is attached is provided along the edge portion on the front side of the seat, and the J hook 60 slides on both sides in the seat width direction along the edge portion (sheet width direction) on the front side of the seat. It is possible. One end of the coil spring is locked to the locking portion 54 and the other end is locked to the J hook 60.

  As described above, one end of the wire 62 is locked to the locking portion provided on the connecting member 44, and the other end is the seat front side on the lower surface of the seat cushion 14 and the seat width direction outer side ( It is locked to a locking portion (not shown) provided on the outer side in the vehicle width direction. More specifically, the wire 62 is wound counterclockwise around the winding portion 44 </ b> C of the connecting member 44 as viewed from the top of the sheet, and is extended from the winding portion 44 </ b> C and locked to the J hook 60. Then, after passing through the J hook 60, the wire 62 extends toward the locking portion of the seat cushion 14 through the insertion hole 56 of the locking portion 54. In the state where the seat 10 is assembled to the vehicle, the J hook 60 is urged toward the inner side in the vehicle width direction by the coil spring. On the other hand, the connecting member 44 can also be urged by a spring spring or the like having one end locked to the connecting member 44 and the other end locked to the support board 50. For this reason, tension is applied to the wire 62 and the slack is eliminated.

(Operation and effect of this embodiment)
Next, the operation and effect of this embodiment will be described.

  In the present embodiment, as shown in FIGS. 3 and 4A, the connecting member 42 provided on the seat body 12 and the connecting member 44 fixed to the base portion 22 are relative to each other about the axis in the vertical direction of the seat. It is screwed so that it can rotate. For this reason, when the sheet body 12 is rotated around the axis in the vertical direction of the sheet, the sheet main body 12 moves in the vertical direction of the sheet. More specifically, the seat body 12 rotates from the standard position where the seat body 12 faces the front side of the vehicle to the boarding / alighting position where the seat body 12 faces the door side (clockwise). Move down. At this time, the seat body 12 moves integrally with the connecting member 42, the support plate 46, and the support plate 30.

  Incidentally, since the vertical movement amount of the sheet main body 12 is proportional to the rotation angle of the sheet main body 12, when the rotation angle of the sheet main body 12 is limited, the vertical movement amount of the sheet main body 12 is also limited.

  Here, in the present invention, the rotation mechanism 52 is provided, and when the sheet main body 12 rotates, the connecting member 44 that is rotatably fixed to the base portion 22 is related to the sheet main body 12 by the rotation mechanism 52. The sheet body 12 rotates in the direction opposite to the rotation direction.

  More specifically, when the seat body 12 is rotated clockwise in the top view of the seat, the wire 62 is pulled accordingly. Since the wire 62 is wound around the winding portion 44C of the connecting member 44 in the counterclockwise direction when viewed from the top of the sheet, when the wire 62 is pulled, the connecting member 44 rotates counterclockwise. That is, when the seat body 12 is rotated, the connecting member 42 rotates relative to the connecting member 44 by an angle obtained by combining the rotation angle of the seat body and the rotating angle of the connecting member 44.

  Thus, in the present embodiment, in addition to the vertical movement amount of the seating surface of the seat body 12 due to the rotation of the seat body 12, the connecting body 44 rotates in the direction opposite to the rotation direction of the seat body 12. Twelve vertical movement amounts can be obtained. For this reason, the change in the orientation of the seat 10 and the change in the height of the seating surface of the seat 10 can be performed simultaneously, and even if the rotation angle of the seat body 12 is limited, the seating surface of the seat 10 is larger. The amount of vertical movement can be obtained. As a result, it is possible to improve the passengers' ability to get on and off, and to increase the number of applicable vehicles of the seat 10.

  Further, in the present embodiment, the connecting member 44 can be biased by a spring spring or the like. For this reason, in a state in which the seat body 12 is rotated until it reaches the getting-on / off position facing the door side, the connecting member 44 is urged in a clockwise direction. As a result, when the seat body 12 is returned from the boarding / alighting position to the standard position, the connecting member 44 rotates clockwise, and the seat body 12 can be quickly returned to the height of the standard position.

  In this embodiment, a ring gear or the like is provided on the mounting portion 44A of the connecting member 44, and a gear box having a lever that can transmit a driving force to the ring gear and can be manually operated is disposed on the base portion 22. May be. Accordingly, the connecting member 44 is rotated by operating the lever, and the seating surface of the seat 10 can be moved in the vertical direction as shown in FIG. 4B. Even if the connecting member 44 rotates, the wire 62 is not loosened because it is urged by the coil spring and is locked by the J hook 60 that is slidable on both sides in the seat width direction.

[Modification of Embodiment]
Next, a modification of the embodiment of the present invention will be described.

  In the present embodiment, the wire 62 is used as the power transmission means of the rotation mechanism 52. However, as shown in the modified example of FIG. It may be configured. Specifically, in this modification, a ring gear or the like is provided in the attachment portion 44A of the connecting member 44, and a gear box capable of transmitting the driving force of the motor 72 to the ring gear is disposed in the base portion 22. . The motor 72 is supplied with electric power from a battery (not shown) of the vehicle.

  On the other hand, the operation switch 74 of the motor 72 is disposed on the vehicle front side of the support plate 30 and on the inner side in the vehicle width direction. The operation switch 74 is set such that the motor 72 is stopped when the operation switch 74 is pressed, and the motor 72 is operated when the operation switch 74 is not pressed. ing.

  A first pressing portion (not shown) is provided on the vehicle width direction inner side end portion of the lower surface of the seat cushion 14 and on the vehicle front side, and a second not shown is provided on the vehicle rear side of the first pressing portion. A pressing part is provided. The first pressing portion is set to press the operation switch 74 at the standard position of the seat body 12, and the second pressing portion is set to press the operation switch 74 at the boarding / exiting position of the seat body 12. Yes.

  In the rotating mechanism 70 configured as described above, when the seat body 12 rotates from the standard position facing the vehicle front side to the boarding / alighting position side where the seat body 12 faces the door side, the pressing state by the first pressing portion of the operation switch 74 Is released, and the motor 72 operates. Thereby, the height of the seating surface of the seat 10 is changed. When the seat body 12 is disposed at the getting-on / off position, the operation switch 74 is pressed by the second pressing portion, whereby the motor 72 is stopped. The motor 72 operates so that the seat main body 12 moves downward in the vertical direction of the seat when the seat main body 12 is rotated from the standard position to the boarding / exiting position by a control device (not shown). When rotating from the standard position to the standard position, the sheet main body 12 operates so as to move upward in the sheet vertical direction.

  As described above, also in this modified example, the change in the orientation of the seat 10 and the change in the height of the seating surface of the seat 10 can be performed simultaneously, and even if the rotation angle of the seat body 12 is limited, the seat 10 A larger amount of vertical movement of the seating surface can be obtained. In addition, by continuing the operation state of the motor 72, the height of the seating surface of the seat 10 can be arbitrarily adjusted.

  In the above-described embodiment, the connecting member 42 is provided with the female screw portion 42B and the connecting member 44 is provided with the male screw portion 44B. However, the connecting member 42 is provided with the male screw portion 44B and the connecting member 44 is provided with the female screw portion 44B. 42B may be provided.

  Furthermore, in the above-described embodiment, when the seat body 12 is rotated from the standard position facing the vehicle front side to the boarding / alighting position facing the door side, the seat body 12 moves downward in the seat vertical direction. Further, it may be configured to move upward in the seat vertical direction. That is, you may comprise the external thread part 44B and the internal thread part 42B with a reverse screw. Further, the vertical movement amount of the seating surface of the seat 10 may be adjusted by changing the pitch and the number of threads of the male screw portion 44B and the female screw portion 42B.

  In addition, in the above-described embodiment, stoppers are provided on the lower surface of the seat cushion 14 and the upper surface of the support plate 30, and the standard position where the seat body 12 faces the front side of the vehicle and the getting-on / off position where the seat body 12 faces the door side are It may be defined by a stopper.

DESCRIPTION OF SYMBOLS 10 Rotating seat for vehicles 12 Seat body 14 Seat cushion 20 Vehicle body floor 22 Base portion 42 Connecting member (first connecting portion)
42B Female thread portion 44 Connecting member (second connecting portion)
44B Male thread 52 Rotating mechanism 70 Rotating mechanism

Claims (1)

A seat body configured to include a seat cushion on which an occupant is seated;
A base portion provided below the seat body and disposed on the vehicle body floor;
A first connecting portion provided in the seat body, and provided with either a male screw portion or a female screw portion;
The base is fixed to the base so as to be rotatable about the axis in the vertical direction of the seat, and the other one of the male screw and the female screw is provided, and is screwed to the first connecting part so as to be rotatable about the axis. A second connecting portion;
A rotation mechanism that rotates the second connecting portion relative to the sheet body in a direction opposite to the rotation direction of the sheet body when the sheet body rotates about the axis;
A vehicular rotating seat.

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