JP2019089539A - Seat rotation device - Google Patents

Abstract

To provide a seat rotation device which can be easily manufactured.SOLUTION: A seat rotation device includes: a plate 31 supporting a seat; and a pair of guide rails 23 which are arranged in parallel to each other in a vehicle width direction DX and support the plate 31. Each guide rail 23 has: a fixed rail 24; and a slide member 25 which supports the plate 31 and slides on the fixed rail 24. The plate 31 has guides 37, each of which guides the slide member 25. The guides 37 are configured so that the plate 31 rotates while moving the pair of slide members 25 in opposite directions or the plate 31 rotates the pair of slide members 25 based on movement in opposite directions.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a sheet rotating apparatus that rotates a sheet.

  The technique described in Patent Document 1 is known as a seat rotating device for rotating a seat of a vehicle. The seat rotating device described in Patent Document 1 includes a pivot along a rotation center and a guide rail of an arc centered on the rotation center.

Japanese Patent Application Laid-Open No. 63-141841

  By the way, it is difficult to manufacture a circular guide at a high yield. An object of the present invention is to provide a sheet rotating device that is easy to manufacture.

  (1) A seat rotation device that solves the above problems includes a plate supporting a seat and a pair of guide rails arranged in parallel in the vehicle width direction to support the plate, the guide rail including a fixed rail, and A sliding member for supporting the plate and sliding on the fixed rail, the plate having a guide for guiding the sliding member, the guide including the plate for the pair of sliding members The plate is configured to rotate with reciprocal movement, or to rotate based on the reciprocal movement of the pair of sliding members.

  According to this configuration, the portion of the plate remote from the center of rotation is supported by the pair of guide rails rather than by the circular guide. As such, since the structure of the arc is not included, manufacture is easy.

  (2) The seat rotation apparatus further includes a pair of slide rails for moving the seat in the vehicle longitudinal direction, the slide rails having a lower rail and an upper rail sliding on the lower rail, and the pair of fixed rails Along the upper rail. According to this configuration, it is possible to widen the space passing through between the pair of slide rails and between the pair of fixed rails, as compared to the case where the fixed rails are disposed obliquely to the upper rail.

(3) In the above-described seat rotating device, the rotation center of the plate is supported by a base connecting the pair of upper rails.
According to the pair of guide rails, although the plate can be rotated without supporting the rotation center of the plate, there is a possibility that the plate can not be rotated smoothly. On the other hand, according to the above configuration, the center of gravity or the vicinity of the center of gravity of the plate is supported by the base, so that the rotation is stabilized.

(4) The sheet rotation apparatus further includes a motor that rotates the plate directly or indirectly, and the motor is attached to the base.
According to this configuration, the structure of the power transmission mechanism from the motor to the plate can be simplified as compared to the case where the motor is fixed to the vehicle. Here, "rotate directly" includes that the motor rotates the plate via the reduction gear. "Indirectly rotating" includes the motor moving the sliding member to rotate the plate.

(5) In the sheet rotating device, the rotation center of the plate is disposed between the pair of guide rails.
When the rotation center is disposed on one of the guide rails, the deviating distance in which one guide extends outward from the inner area is greater than the deviating distance in which the other guide extends outward from the inner area. When the deviation distance is increased toward one side of the plate in this manner, a large deviation occurs in the empty space provided on the side of the sheet to smoothly rotate the sheet. Such a deviation in space induces a deviation in the installation position of the sheet 1 and is not preferable in appearance. On the other hand, according to the above configuration, since the rotation center of the plate is disposed between the pair of guide rails, the deviation distance in which one guide extends outward from the inner region and the other guide is inward It is possible to reduce the difference between the deviation distance extending outward from the region.

  (6) In the sheet rotation device, for a plurality of paired components that move relative to each other by the rotation of the plate, the paired components are disposed when the plate is disposed at a prescribed rotational position with respect to the pair of fixed rails And a play reduction unit for reducing the play of the According to this configuration, when the plate is disposed at the predetermined rotation angle, the vertical play of the plate is reduced at the position of the rotation angle, and the position of the plate is stabilized.

  (7) In the sheet rotation device, in the plurality of pair parts that move relative to each other by the rotation of the plate, at least one of at least one pair part has the play reduction portion, and the play reduction portion The thickness width is larger than the thickness width of the portion adjacent to the play reducing portion in the direction along the relative movement of the pair parts. According to this configuration, the play reduction portion can be easily formed.

  (8) The sheet rotation device according to the present invention further includes an engaging member for engaging the pair of components with each other, and the portion provided with the play reducing portion is the engaging member when the plate is disposed at a prescribed rotational position. Is the site to be placed. According to this configuration, when the plate is placed in the specified rotational position, the vertical play of the plate is reduced, and the position of the plate is stabilized.

  The sheet rotating device has a structure that is easy to manufacture.

The top view of a vehicle seat. Side view of a vehicle seat. The perspective view of a sheet rotation device. Top view of the base. The top view of a plate. The rear view of a sheet | seat rotation apparatus. The top view of a drive device. The figure which illustrates the position of the rotation center of a sheet about a reference sheet. The figure explaining the position of the rotation center of a sheet. The figure explaining the position of the rotation center of a sheet. The top view of the sheet | seat rotation apparatus of a reference | standard attitude | position. FIG. 2 is a plan view of a seat rotating device in a post-rotation posture. The schematic diagram explaining an inner side guide. The schematic diagram explaining an outer side guide. FIG. 8 is a first plan view showing the operation of the sheet rotation device. FIG. 7 is a second plan view showing the operation of the sheet rotation device. FIG. 13 is a third plan view showing the operation of the sheet rotation device. The perspective view of the inside connection rail guide provided with a 1st spacer, and its peripheral part about the modification of a sheet rotation device. The top view of the 1st spacer about the modification of a sheet rotation device. Sectional drawing of an inside connection rail guide provided with a 1st spacer, and its peripheral part about the modification of a sheet | seat rotation apparatus. The perspective view of the connection rail guide of an outer side provided with a 2nd spacer, and its peripheral part about the modification of a sheet rotation device. Sectional drawing of the outer side connection rail guide provided with a 2nd spacer, and its peripheral part about the modification of a sheet | seat rotation apparatus. The rear view of a sheet | seat rotation apparatus about the modification of a sheet | seat rotation apparatus. The top view of a plate about the modification of a sheet rotation device. FIG. 25 is a cross-sectional view taken along the line A-A of FIG. 24.

A seat and a seat rotating device attached to a vehicle will be described with reference to FIGS. 1 to 17.
Hereinafter, with regard to the seat 1 and the seat rotation device 5, a posture when the seat 1 and the seat rotation device 5 are attached to the vehicle in a state of facing the front is referred to as a reference posture. In the description of each configuration of the seat 1 and the seat rotating device 5, it is assumed that these are in the reference posture. Specifically, “vehicle width direction DX” in the seat rotation device 5 indicates a direction along the width direction of the vehicle when the seat rotation device 5 takes a reference posture. “Vehicle longitudinal direction DY” of the seat rotation device 5 indicates a direction along the longitudinal direction of the vehicle when the seat rotation device 5 assumes the reference posture. The “vertical direction DZ” in the seat rotation device 5 indicates the direction along the vertical direction of the vehicle when the seat rotation device 5 takes a reference posture.

The sheet 1 will be described with reference to FIGS. 1 and 2. The seat 1 includes a seat cushion 1a and a seat back 1b.
The seat 1 is disposed on the vehicle door 2 side. That is, the seat 1 is disposed between the vehicle door 2 and the vehicle central portion 3. The seat 1 is fixed to the vehicle floor 4 via a seat rotation device 5. The sheet 1 is rotated by the operation of the sheet rotating device 5. In the seat 1, “outward rotation” rotation indicates that when the seat 1 assumes the reference posture, the front portion of the seat 1 rotates outward in the vehicle width direction DX. FIG. 1 shows the state of the seat 1 when the vehicle door 2 is opened and the seat 1 is rotated outward based on the operation of the seat rotation device 5. At this time, as shown in FIG. 1, a part of the front side of the seat 1 is outside the slide rail 10 (see later) on the vehicle door 2 side.

The sheet rotation device 5 will be described with reference to FIG.
The sheet rotating device 5 includes a plate 31 (see below) which supports the sheet 1 and a supporting device 6 which rotatably supports the plate 31.

  The support device 6 includes a rotary support 21 that rotatably supports at least the plate 31. The rotation support portion 21 includes a pair of guide rails 23 as described later, as an example. The support device 6 may comprise, in addition to the rotary support 21, a support 9 for supporting the rotary support 21. The support 9 is a table or a device that supports the rotary support 21. In the present embodiment, the support base 9 is configured as a pair of slide rails 10 that slide the seat 1 in the vehicle longitudinal direction DY. By the operation of the slide rail 10, the position of the seat 1 can be changed in the vehicle longitudinal direction DY.

  The support device 6 comprises at least one pair of rails. Specifically, at least one of the rotary support 21 and the support 9 that are components of the support device 6 includes a pair of rails. For example, the rotation support portion 21 is configured by a pair of guide rails 23, or the support base 9 is configured by a pair of slide rails 10.

The sheet rotation device 5 may further include a connection rail 50 (see below) which connects the front portions of the pair of arms 33 (see below).
Furthermore, the sheet rotation device 5 may include a motor 41 that rotates the plate 31 directly or indirectly.

Each component will be described below.
In the present embodiment, the support stand 9 is configured as a pair of slide rails 10 that allows the position of the seat 1 to be changed in the vehicle longitudinal direction DY with respect to the vehicle floor 4. The slide rail 10 has a lower rail 11 and an upper rail 12. The pair of lower rails 11 are arranged in parallel in the vehicle width direction DX. The lower rail 11 is installed on the vehicle floor 4 such that the longitudinal direction of the lower rail 11 coincides with the vehicle longitudinal direction DY. The lower rail 11 is fixed to the vehicle floor 4 via a bracket 19, for example.

  The upper rail 12 slides on the lower rail 11. The pair of upper rails 12 are connected by a base 13. The pair of upper rails 12 and the base 13 integrally move in the vehicle longitudinal direction DY. The plate 31 is installed on the pair of upper rails 12 or the base 13 via the rotation support portion 21. Therefore, the plate 31 moves integrally with the pair of upper rails 12 and the base 13 in the vehicle longitudinal direction DY.

  A locking device (not shown) is attached to the slide rail 10. The lock device fixes (locks) the upper rail 12 to the lower rail 11 at an arbitrary position. When the lock of the upper rail 12 fixed to the lower rail 11 is released by the unlocking operation of the lock device, the upper rail 12 can move relative to the lower rail 11, and the seat 1 can move forward and backward.

  As shown in FIGS. 3 and 4, the base 13 includes a base body portion 14 and a pair of fixing portions 15 fixed to the upper rail 12. The base main body portion 14 has a bottom portion 14 a disposed at a lower position than the pair of fixing portions 15 and an arm portion 14 b connected from the bottom portion 14 a to the fixing portion 15. The bottom 14 a is disposed below the plate 31. An accommodation space SA (see FIG. 3) in which a drive device 40 described later is disposed is provided between the plate 31 and the bottom portion 14a.

Next, the rotation support portion 21 of the sheet rotation device 5 will be described.
The rotation support portion 21 rotatably supports the plate 31 as described above. The rotation support portion 21 includes a pair of guide rails 23 for supporting the plate 31 (see FIG. 3). The pair of guide rails 23 are arranged in parallel in the vehicle width direction DX.

  The guide rail 23 includes a fixed rail 24 and a sliding member 25 that supports the plate 31 and slides on the fixed rail 24. Each of the pair of fixed rails 24 is attached to the base 13 or the upper rail 12 along the upper rail 12. The fixed rail 24 may be mounted on the upper rail 12 and may be disposed adjacent to the upper rail 12 in the vehicle width direction DX when disposed on the base 13.

The sliding member 25 moves along the fixed rail 24. In the present embodiment, when the seat rotating device 5 assumes the reference posture, the sliding member 25 moves in the vehicle longitudinal direction DY.
The sliding member 25 has a sliding main body 25 a sliding on the fixed rail 24 and an engaging part 25 b provided on the sliding main body 25 a and engaged with the plate 31. Preferably, a rolling member (not shown) is interposed between the fixed rail 24 and the sliding main body 25a so that the sliding member 25 moves smoothly. The rolling member includes a ball that contacts both the sliding main body 25 a and the fixed rail 24. The sliding main body 25a is supported by the fixed rail 24 via a rolling member. The sliding main body 25 a has a support surface 25 s for supporting the plate 31. A portion of the plate 31 (the periphery of the guide 37 described later) is placed on the support surface 25s. The above-mentioned engaging portion 25 b is provided on the support surface 25 s. The engaging portion 25 b protrudes from the support surface 25 s.

  Of the pair of sliding members 25, the sliding member 25 (hereinafter, “inner sliding member 25 </ b> A”) disposed on the vehicle center side in the vehicle width direction DX is a guide 37 (inward in the vehicle width direction DX) It engages with an inner guide 37A) described later. Of the pair of sliding members 25, the sliding members 25 (hereinafter, “outside sliding members 25 B”) disposed on the vehicle door 2 side in the vehicle width direction DX are the guides 37 on the outside of the plate 31 in the vehicle width direction DX. It engages with (the outer guide 37B described later).

The plate 31 will be described with reference to FIGS. 3 and 5.
The plate 31 supports the sheet 1 as described above. The plate 31 rotates relative to the support 9. When the sheet rotation device 5 assumes the basic posture, the rotation center axis of the plate 31 is along the vertical direction DZ (vertical direction). Hereinafter, an intersection point of the rotation center axis of the plate 31 and a plane perpendicular to the rotation center axis is referred to as a “rotation center C”. The rotation center C of the plate 31 is in an area between the guide rails 23 described later (this area does not include the top of the guide rails 23) in the vehicle width direction DX.

As shown in FIG. 5, the plate 31 includes a body 32 and two arms 33 extending from the body 32.
The body 32 is configured to cross the pair of guide rails 23.

  Two arms 33 extend forward from the body 32. The two arms 33 are fixed to the body 32. When the seat 1 assumes the reference posture, the two arms 33 respectively follow the upper rails 12. Further, in relation to the seat 1, the space area SB between the pair of arms 33 is disposed in the front side range AS which precedes the range AR (see FIG. 11) in which the seat back 1b is provided in the seat cushion 1a. .

  The arm 33 has two fastening portions 34 for fixing the seat 1. Two fastening portions 34 are provided at the front and rear of the arm 33. The two arms 33 may be formed separately from the body 32 or may be formed integrally with the body 32.

  A connection rail guide 35 for guiding an inner end 52a (see below) of the second rail 52 of the connection rail 50 to the arm 33 on the vehicle center side (hereinafter referred to as "inside arm 33A") of the two arms 33. Is provided. Specifically, the connection rail guide 35 guides the second slide pin 54 provided at the inner end 52 a of the second rail 52. The connecting rail guide 35 extends rearward from near the front end of the inner arm 33A. The connection rail guide 35 is configured, for example, as an elongated hole (an example in the present embodiment) or a groove penetrating the arm 33.

  Of the two arms 33, the arm 33 on the vehicle door 2 side (hereinafter referred to as "outside arm 33B") rotatably supports the outer end 52b (see below) of the second rail 52 of the connection rail 50. A rail support 36 is provided. When the second rail 52 is provided with a shaft, the rail support portion 36 is configured as a bearing that receives the shaft. When the second rail 52 is provided with a bearing, the rail support portion 36 is configured as a shaft that can be received by the bearing.

Furthermore, the plate 31 has a guide 37 for guiding the sliding member 25.
The guide 37 engages with the sliding member 25 to relate the rotation of the plate 31 and the reciprocal movement of the pair of sliding members 25. The reciprocal movement indicates that when the inner sliding member 25A moves in a predetermined direction, the outer sliding member 25B moves in the opposite direction to the inner sliding member 25A.

  The guide 37 is configured such that the plate 31 rotates while reciprocally moving the pair of sliding members 25. That is, the guide 37 is configured such that the pair of sliding members 25 reciprocally move based on the rotation of the plate 31.

  The guide 37 is configured as an inner surface (hereinafter, "guide surface 38") of the through hole through which the engaging portion 25b of the sliding member 25 is inserted. When the plate 31 rotates, the guide surface 38 pushes the engaging portion 25 b, so the sliding member 25 moves in the vehicle longitudinal direction DY with the rotation of the plate 31. The plate 31 is supported by the support surface 25s of the sliding member 25 from the reference posture to a predetermined posture after rotation (hereinafter, "post-rotation posture"). The specific configuration of the guide 37 will be described later.

The support structure of the plate 31 will be described with reference to FIGS. 3, 5 and 6.
The plate 31 is supported at at least three points. If the seat rotation device 5 comprises a connecting rail 50, the plate 31 is also supported by the connecting rail 50. Here, the three-point support structure of the plate 31 will be described.

  Both ends of the plate 31 in the vehicle width direction DX are supported by the guide rails 23, respectively. Further, a portion of the plate 31 including the rotation center C (hereinafter, “rotation center 31 a”, see FIG. 5) is supported by the base 13. In the present embodiment, the rotation center portion 31 a of the plate 31 is supported by the base 13 via the reduction gear 42 attached to the base 13. As described above, the plate 31 is supported by the pair of guide rails 23 and the base 13.

The drive device 40 for rotating the plate 31 will be described with reference to FIG.
In the present embodiment, the drive device 40 includes a motor 41 and a reduction gear 42 that reduces the output of the motor 41. The motor 41 and the reduction gear 42 are attached to the base 13. The reduction gear 42 decelerates the output of the motor 41 and transmits rotational power to the plate 31. The output unit 43 of the reduction gear 42 includes a rotating output shaft 44, a support unit 45 attached to the output shaft 44 to support the plate 31, and a plurality of coupling units 46 provided on the support unit 45. The coupling portion 46 is fastened to the plate 31. The plurality of coupling portions 46 are disposed on a circle centered on the output shaft 44. The coupling portion 46 is constituted by, for example, a bolt, and is coupled to the plate 31 by the bolt and the nut.

The position of the rotation center C of the plate 31 will be described with reference to FIGS. 8 to 10.
The sheet rotation device 5 has a structure rotatably supported by a pair of guide rails 23. For this reason, the position of the rotation center C can be arbitrarily set between the pair of guide rails 23.

  FIG. 8 is a view for explaining the position of the rotation center C of the sheet 1x in the sheet 1x to be compared with the sheet 1 according to the present embodiment. 8 to 10, the sheets 1 and 1x in the reference posture are indicated by solid lines, and the sheets 1 and 1x in the posture after rotation are indicated by two-dot chain lines. The rotation angles of the respective sheets 1x and 1 shown in FIGS. 8 to 10 are equal.

  As shown in FIG. 8, in the reference sheet 1x, the rotation center C thereof coincides with the central point CP of the sheet 1x. Here, the center point CP of the seat 1x is the middle line ML1 at the same distance from both sides of the seat 1x in the vehicle width direction DX, and the middle line at the same distance from both front and rear sides of the seat 1x in the vehicle longitudinal direction DY. Defined as the intersection with ML2. In such a case, after rotation of the seat 1x, the rear inner corner of the seat 1x moves inward in the vehicle width direction DX more than the corner in the reference posture, and the corner is the inner guide rail 23 Deviates more inward than it does. For this reason, in the vehicle, it is necessary to provide an empty space SX where the corner of the inner rear portion of the seat 1x enters when the seat 1x rotates along the inner side of the seat 1x in the vehicle width direction DX. There is.

  The rotation center C of the sheet 1 shown in FIG. 9 is located rearward of the midline ML2 of the sheet 1. Specifically, the center of rotation C of the seat 1 is in a range AR in which the seat back 1 b is provided in the seat cushion 1 a in plan view. In this case, after the sheet 1 rotates and during rotation, the deviation of the rear inner corner of the sheet 1 is reduced. Thereby, the above-mentioned vacant space SX can be narrowed, and formation of useless vacant space SX can be suppressed in vehicle interior space.

  The rotation center C of the sheet 1 shown in FIG. 10 is located rearward of the mid line ML2 of the sheet 1 and located outward of the center point CP of the sheet 1. Specifically, the center of rotation C of the seat 1 is within the range AR in which the seatback 1b is provided in the seat cushion 1a in plan view, and outside the midline ML1 of the seat 1 in the vehicle width direction DX. To position. In this case, after the sheet 1 is rotated, the backward deviation of the rear outer corner of the sheet 1 is smaller than in the example shown in FIG. 9. When the width W of such deviation increases, the space behind the sheet 1 narrows and the space in the rear sheet is compressed after the rotation of the sheet 1, but according to the configuration shown in FIG. The compression of the space of the rear seat based on the rotation can be reduced to one.

Hereinafter, an example of the arrangement of the rotation center C of the plate 31 will be described below.
(A) The rotation center C of the plate 31 is between the pair of rails and in the range AR in which the seat back 1b of the seat 1 is provided in the vehicle longitudinal direction DY. "Between a pair of rails" indicates between the pair of guide rails 23 when the sheet rotating device 5 includes only the guide rails 23 as rails, and when the sheet rotating device 5 includes only the slide rails 10 as rails. Here, between the pair of slide rails 10 is shown. As in the present embodiment, when the seat rotation device 5 includes the guide rails 23 and the slide rails 10 as rails, “between a pair of rails” means a pair having a short distance in the vehicle width direction DX after both. Indicate the space between the pair of rails. The “range AR” described above indicates a projection range when the seatback 1b of the seat 1 is set to a typical standing posture and the seatback 1b is projected on a horizontal surface. In addition, range AR based on the seat back 1b shown by FIG. 11 is described typically.

  (B) The rotation center C of the plate 31 is between the pair of guide rails 23 and on the outer side in the vehicle width direction DX than the intermediate line CL which is equidistant from the pair of guide rails 23 in the vehicle width direction DX. Be placed.

  (C) The first center of rotation SL of the plate 31 is between the pair of guide rails 23, and the first boundary line SL1 and the second boundary line 4 equally divide between the pair of guide rails 23 in the vehicle width direction DX. The boundary line SL2 and the third boundary line SL3 are disposed between the first boundary line SL1 and the third boundary line SL3.

A specific example of the guide 37 will be described with reference to FIGS. 11 to 14.
The configuration of the guide 37 is defined in relation to the movement path of the engaging portion 25 b of the sliding member 25. Therefore, first, the moving path of the engaging portion 25b of the sliding member 25 will be described.

  As shown in FIG. 11, in the present embodiment, when the seat rotating device 5 assumes the reference posture, the engaging portion 25b of the inner sliding member 25A and the engaging portion 25b of the outer sliding member 25B are in the longitudinal direction of the vehicle. It is arranged before the rotation center C in DY.

  As shown in FIG. 12, when the plate 31 rotates outward, the inner sliding member 25A moves forward away from the perpendicular line PL passing through the rotation center C, and the outer sliding member 25B rotates the rotation center C. It moves backward so as to approach and pass through the perpendicular PL.

  The perpendicular line PL is a line extending perpendicularly to the guide rail 23 from the rotation center C of the plate 31. Hereinafter, in the movement of the engagement portion 25b, the position of the engagement portion 25b when the seat rotation device 5 takes the reference posture is referred to as “start point PS” (see FIGS. 13 and 14). The position of the engaging portion 25b when taking the rear posture is referred to as "end point PE" (see FIGS. 13 and 14). The rotation angle of the plate 31 until the sheet rotation device 5 changes from the reference posture to the post-rotation posture is referred to as “maximum rotation angle DGM”. In the movement path of the engagement portion 25b when the sheet rotation device 5 rotates from the reference posture to the post-rotation posture, the point closest to the rotation center C is defined as "the closest point MCP" It is defined as "the farthest point MFP". A circle whose radius r1 is the line connecting the rotation center C and the nearest point MCP is called a small circle, and a circle whose radius r2 is the line connecting the rotation center C and the farthest point MFP is called a great circle. A part of the locus of the great circle of radius r2 is indicated by a broken line in FIGS. 11 and 12.

  The guide 37 at the vehicle center side in the vehicle width direction DX (hereinafter, “inside guide 37A”) engages with the engaging portion 25b of the inside sliding member 25A. When the plate 31 rotates outward, the inner guide 37A moves the inner sliding member 25A away from the perpendicular line PL.

  The guide 37 on the side of the vehicle door 2 in the vehicle width direction DX (hereinafter, referred to as "outside guide 37B") engages with the engaging portion 25b of the outside sliding member 25B. When the plate 31 rotates outward, the outer guide 37B moves the outer sliding member 25B to pass the perpendicular line PL.

  As described above, the guide 37 is set based on the movement path of the engaging portion 25b of the sliding member 25 (25A, 25B) along with the rotation of the plate 31. The guide 37 is configured to connect the next first position PT1, the second position PT2 and the third position PT3 defined on the plate 31.

The first position PT1, the second position PT2, and the third position PT3 are defined as follows.
The first position PT1 is a position corresponding to the start point PS of the engagement portion 25b in the plate 31 when the sheet rotation device 5 takes the reference posture.

  The second position PT2 is a point for defining the second position PT2 on the plate 31 when the sheet rotation device 5 assumes the reference posture, and a rotation direction from the nearest point MCP along the small circle (rotation opposite to the outer rotation Position) is the position of the point when it is rotated by the first predetermined rotation angle DG1. The first predetermined rotation angle DG1 indicates the rotation angle of the plate 31 from the start point PS to the closest point MCP of the engagement portion 25b (see FIG. 14).

  The third position PT3 is a point at which the third position PT3 is determined on the plate 31 when the sheet rotation device 5 assumes the reference posture, along the great circle from the farthest point MFP in the reverse rotation direction Position of the point when it is rotated by the second predetermined rotation angle DG2 in the rotation direction). The second predetermined rotation angle DG2 indicates the rotation angle of the plate 31 from the start point PS to the farthest point MFP of the engagement portion 25b (see FIGS. 13 and 14).

The inner guide 37A will be described with reference to FIG.
The movement path of the engaging portion 25b of the inner sliding member 25A is in front of the perpendicular line PL.
The position of the closest point MCP is equal to the position of the start point PS of the movement path of the engagement portion 25b. In this case, the first predetermined rotation angle DG1 is 0 degrees. The farthest point MFP is the end point PE of the movement path of the engagement portion 25b. In this case, the second predetermined rotation angle DG2 is equal to the maximum rotation angle DGM of the plate 31.

  The first position PT1 is the starting point PS of the movement path of the engagement portion 25b according to its definition. The second position PT2 is the position of the point when the point for determining the second position PT2 is rotated by the first predetermined rotation angle DG1 ("0 degree") in the opposite rotation direction from the nearest point MCP (starting point PS) And overlap with the position of the starting point PS. Therefore, the first position PT1 and the second position PT2 are at the same position. The third position PT3 is a point at which the point for determining the third position PT3 is rotated from the farthest point MFP (end point PE) in the reverse rotation direction by the second predetermined rotation angle DG2 (maximum rotation angle DGM). It is a position. As described above, the first position PT1, the second position PT2, and the third position PT3 are set. The inner guide 37A is configured to pass through these positions.

The outer guide 37B will be described with reference to FIG.
The movement path of the engaging portion 25b of the outer sliding member 25B is configured to pass the perpendicular line PL. For example, a first distance D1 between an intersection CRP at which the moving path of the engaging portion 25b intersects the perpendicular PL and a front end position (start point PS) in the moving path of the engaging portion 25b is the intersection CRP and the sliding member 25 The second distance D2 between the movement path and the rear end position (end point PE) is equal to or more than half and equal to or less than two times the second distance D2. In the present embodiment, the distance between the intersection point CRP and the end point PE of the movement path and the distance between the intersection point CRP and the start point PS of the movement path are equal. The position of the nearest point MCP is equal to the position of the intersection point CRP. The first predetermined rotation angle DG1 is half the maximum rotation angle DGM. The farthest point MFP is the end point PE of the movement path of the engagement portion 25b. In this case, the second predetermined rotation angle DG2 is equal to the maximum rotation angle DGM of the plate 31.

  The first position PT1 is the starting point PS of the movement path of the engagement portion 25b according to its definition. The second position PT2 is obtained by rotating the point for determining the second position PT2 from the point of intersection CRP, which is the closest point MCP, by the first predetermined rotation angle DG1 (half the large rotation angle DGM) in the opposite direction. It is the position of the point. The third position PT3 is a point when the point for determining the third position PT3 is rotated in the opposite rotational direction by the second predetermined rotation angle DG2 (maximum rotation angle DGM) from the end point PE which is the farthest point MFP. Position. As described above, the first position PT1, the second position PT2, and the third position PT3 are set. The outer guide 37B is configured to pass through these positions.

  The length of the outer guide 37B shown in FIG. 14 is different from the length of the outer guide 37B shown in FIG. The outer guide 37B shown in FIG. 12 and the like has a structure in which the outer end of the schematic outer guide 37B shown in FIG. 14 extends outward. This extension portion is a margin portion for absorbing the positional deviation of each component occurring in the assembly, and the presence of this margin portion can suppress the movement limitation of the outer sliding member 25B due to the positional deviation of each component.

  Preferably, at least one of the pair of guides 37 is configured such that the engaging portion 25b of the sliding member 25 passes the perpendicular line PL (hereinafter, this requirement is referred to as a "guide requirement"). In the present embodiment, as described above, the outer guide 37B satisfies this guide requirement (see FIG. 14). According to this configuration, the length of the guide 37 can be shortened as compared with the configuration of the guide 37 (see, for example, FIG. 13) in which the sliding member 25 does not pass the perpendicular line PL. The reason is as follows. As described above, the length of the guide 37 is set based on the movement path of the engagement portion 25b. The length of the guide 37 becomes longer as the difference between the farthest point MFP and the nearest point MCP increases. The difference between the farthest point MFP and the nearest point MCP becomes large when the movement path is set at a position far from the perpendicular line PL. Therefore, when the movement path of the engagement portion 25 b is configured to pass the perpendicular line PL, the guide 37 becomes short.

The connection rail 50 will be described with reference to FIGS. 3 and 15 to 17.
The connecting rail 50 connects the pair of arms 33 of the plate 31. The connection rail 50 also supports the pair of arms 33 of the plate 31. The connecting rail 50 supports the pair of arms 33 of the plate 31 from the reference posture to the post-rotation posture.

  The connection rail 50 includes a first rail 51 and a second rail 52 sliding with respect to the first rail 51. The first rail 51 is attached to the support 9. In the present embodiment, the support 9 is a slide rail 10. The first rail 51 is bridged between the pair of upper rails 12. The first rail 51 is configured to bridge the pair of upper rails 12 from the reference posture to the post-rotation posture. The second rail 52 slides on the first rail 51 and is spanned by a pair of arms 33 of the plate 31. The second rail 52 is configured to be bridged by the pair of arms 33 from the reference posture to the post-rotation posture.

  An inner end 51 a of the first rail 51 of the connection rail 50 in the vehicle width direction DX is rotatably attached to the upper rail 12 of the inner slide rail 10. For example, the inner end 51 a is attached to the upper rail 12 via a shaft member.

  An outer end 51 b of the first rail 51 of the connection rail 50 in the vehicle width direction DX is slidably attached to the upper rail 12 of the outer slide rail 10. Specifically, the outer upper rail 12 is provided with a connecting rail guide 16 for guiding the outer end 51 b of the first rail 51 along the longitudinal direction of the upper rail 12. A first slide pin 53 is provided on the lower surface of the outer end portion 51 b of the first rail 51 so as to be movable along the longitudinal direction of the first rail 51. The first slide pin 53 slides on the connection rail guide 16. The connecting rail guide 16 is configured, for example, as a member having a groove or a long hole. The first slide pin 53 moves along the upper rail 12 while moving outward in the first rail 51 (outward in the vehicle width direction DX) as the plate 31 rotates from the reference posture to the post-rotation posture. Move backwards.

  An inner end 52 a of the second rail 52 of the connection rail 50 in the vehicle width direction DX is slidably attached to the inner arm 33 A of the plate 31. Specifically, as described above, the inner arm 33A is provided with the connecting rail guide 35 for guiding the inner end 52a of the second rail 52 along the longitudinal direction of the inner arm 33A. A second slide pin 54 is provided on the upper surface of the inner end 52 a of the second rail 52 so as to be movable along the longitudinal direction of the second rail 52. The second slide pin 54 slides on the connection rail guide 35. The second slide pin 54 moves along the inner arm 33A while moving inward in the second rail 52 (inward in the vehicle width direction DX) as the plate 31 rotates from the reference posture to the post-rotation posture. Move backwards.

  The outer end 52 b of the second rail 52 of the connecting rail 50 in the vehicle width direction DX is rotatably attached to the outer arm 33 B of the plate 31. For example, the outer end 52b is attached to the outer arm 33B via a shaft member.

The operation of the sheet rotating device 5 will be described with reference to FIGS. In addition, the slide rail 10 is abbreviate | omitted in FIGS. 15-17.
FIG. 15 shows the sheet rotating device 5 in the reference posture. At this time, the front end of the inner arm 33A and the front end of the outer arm 33B are disposed on the upper rail 12.

  As shown in FIG. 16, when the plate 31 is rotated by the power of the drive device 40, the inner sliding member 25A moves forward and the outer sliding member 25B moves rearward. Further, with the operation of the inner sliding member 25A and the outer sliding member 25B, the second rail 52 rotates about the outer end 52b while the first rail 51 rotates about the inner end 51a. The second rail 52 moves outward with respect to the first rail 51 in the vehicle width direction DX. At this time, the outer end 51b of the first rail 51 slides on the connection rail guide 16, and the inner end 52a of the second rail 52 slides on the connection rail guide 35 of the inner arm 33A.

  As shown in FIG. 17, when the plate 31 rotates to the post-rotation attitude, the outer end 51 b of the first rail 51 reaches the rear end of the connecting rail guide 16 and the inner end 52 a of the second rail 52. Leads to the rear end of the connecting rail guide 35 of the inner arm 33A. At this time, the front end of the outer arm 33B and the front end of the inner arm 33A are disposed at a position deviating from the upper rail 12, but the front end of the outer arm 33B and the intermediate portion of the inner arm 33A are supported by the connection rail 50 Be done. The connection rail 50 is disposed so as to be bridged by the pair of upper rails 12 and bridged by the pair of arms 33. As a result, when the seat rotation device 5 assumes the post-rotation posture, the force applied to the outer arm 33 B when a load is applied to the front side of the seat 1 is transmitted to the slide rail 10. Thus, the force concentrated on the outer arm 33B is dispersed, and the deformation of the outer arm 33B is suppressed.

The operation of the sheet rotation device 5 will be described.
The sheet rotation device 5 includes a plate 31 supporting the sheet 1 and a pair of guide rails 23 supporting the plate 31. The plate 31 has a guide 37 for guiding the sliding member 25. The guide 37 is configured such that the plate 31 rotates while reciprocally moving the pair of sliding members 25. The plate 31 is supported by a pair of guide rails 23 instead of being supported by an arc-shaped guide. As such, since the structure of the arc is not included, manufacture is easy. In addition, in the case of a circular guide, it is difficult to improve the manufacturing yield because it is necessary to curve the guide along a circle. On the other hand, since there is no step of curving the guide rail 23 in the process of manufacturing the guide rail 23, it is easy to manufacture and the yield can be increased.

The effects of the sheet rotation device 5 according to the present embodiment will be described.
(1) The sheet rotating device 5 includes the plate 31 supporting the sheet 1 and the pair of guide rails 23 supporting the plate 31. The guide rail 23 has a fixed rail 24 and a sliding member 25 sliding on the fixed rail 24. The plate 31 has a guide 37 for guiding the sliding member 25. The guide 37 is configured such that the plate 31 rotates while reciprocally moving the pair of sliding members 25.

  According to this configuration, the portion of the plate 31 apart from the rotation center 31 a is supported by the pair of guide rails 23 instead of being supported by the arc-shaped guide. As such, since the structure of the arc is not included, manufacture is easy.

  (2) The sheet rotation device 5 further includes the pair of slide rails 10. The slide rail 10 has a lower rail 11 and an upper rail 12 sliding on the lower rail 11. The pair of fixed rails 24 is along the upper rail 12. According to this configuration, the space SC penetrating between the pair of fixed rails 24 and the pair of slide rails 10 can be made wider than when the fixed rails 24 are arranged obliquely with respect to the upper rail 12.

(3) The rotation center portion 31 a of the plate 31 is supported by the base 13 connecting the pair of upper rails 12.
According to the pair of guide rails 23, the plate 31 can be rotated without supporting the rotation center portion 31a of the plate 31, but there is a possibility that the plate 31 can not be rotated smoothly. On the other hand, according to the above configuration, the center of gravity or the vicinity of the center of gravity of the plate 31 is supported by the base 13, so that the rotation is stabilized.

(4) The sheet rotating device 5 further includes a motor 41 that rotates the plate 31 directly or indirectly. The motor 41 is attached to the base 13.
According to this configuration, the structure of the power transmission mechanism from the motor 41 to the plate 31 can be simplified as compared to the case where the motor 41 is fixed to the vehicle. Here, “directly rotate” includes that the motor 41 rotates the plate 31 via the reduction gear. The “indirect rotation” includes that the motor 41 moves the sliding member 25 to rotate the plate 31 based on the movement of the sliding member 25.

(5) The rotation center C of the plate 31 is disposed between the pair of guide rails 23.
When the rotation center C is disposed on one of the guide rails 23, a deviation of one guide 37 extending outward (for example, inward in the vehicle width direction) from the inner region (the region between the pair of guide rails 23) The distance is larger than the deviating distance in which the other guide 37 extends outward from the inner region (for example, outward in the vehicle width direction). When the deviation distance becomes larger toward one side of the plate 31 as described above, a large deviation occurs in the empty space SX provided on the side of the sheet 1 in order to rotate the sheet 1 smoothly. Such a deviation in space induces a deviation in the installation position of the sheet 1 and is not preferable in appearance. On the other hand, according to the above configuration, since the rotation center C of the plate 31 is disposed between the pair of guide rails 23, a deviation distance in which one guide 37 extends outward from the inner region, and the other It is possible to reduce the difference between the guide 37 and the deviation distance extending outward from the inner region.

<Other Embodiments>
The sheet rotation device 5 according to the embodiment is not limited to the above embodiments. Other embodiments include the following examples.

  In the seat rotating device 5, the slide rail 10 may be omitted. In this case, the rotation support portion 21 may be fixed directly to the vehicle floor 4 or may be fixed to the vehicle floor 4 via a fixing member such as a bracket or a stand. The pair of guide rails 23 is fixed to the vehicle floor 4. For example, such a seat rotation device 5 can be mounted on the rear seat of a vehicle or on the passenger seat of a driver seat of a truck.

  -Although the plate 31 rotates based on the drive device 40 in the said embodiment, the mechanism which rotates the plate 31 is not limited to the example of embodiment. For example, the plate 31 rotates based on the operation of a sliding member drive device (not shown) that reciprocally moves the pair of sliding members 25 of the rotation support portion 21. The sliding member drive device includes, for example, a connecting device that connects the inner sliding member 25A and the outer sliding member 25B, and a motor. The motor transmits power to at least one of the inner slide member 25A, the outer slide member 25B, and the coupling device to move them. The coupling device reciprocally moves the inner sliding member 25A and the outer sliding member 25B. The coupling device is configured by, for example, a link mechanism or a wire that couples the inner sliding member 25A and the outer sliding member 25B. In this case, the guide 37 can take the following "second configuration".

  In the above embodiment, the guide 37 is configured to rotate while the plate 31 reciprocally moves the pair of sliding members 25 (hereinafter referred to as “first configuration”), but is also configured as follows obtain. The guide 37 is configured such that the plate 31 rotates the pair of sliding members 25 based on the reciprocal movement (hereinafter, “second configuration”). The guide 37 of the second configuration is configured such that the plate 31 rotates based on the movement of the pair of sliding members 25 when the pair of sliding members 25 reciprocally move by the power of the motor 41. The guide 37 of the first configuration and the guide 37 of the second configuration may be of the same shape.

  In the embodiment described above, the sheet rotating device 5 preferably includes the play reducing unit 60. The play reduction portion 60 is a play between pair parts when the plate 31 is disposed at a prescribed rotational position with respect to the pair of fixed rails 24 with respect to a plurality of pair parts that move relative to each other by rotation of the plate 31 Make the gap smaller. The prescribed rotational position is, for example, a first rotational position and a second rotational position. The first rotational position is, as shown in FIG. 15, the rotational position of the plate 31 of the sheet rotating device 5 in the reference posture. The second rotational position is, as shown in FIG. 17, the rotational position of the plate 31 of the sheet rotation device 5 in the post-rotation posture.

The play reduction unit 60 will be described with reference to FIGS. 18 to 25.
The play reduction unit 60 is configured to change the frictional resistance between two parts whose positional relationship changes with the rotation of the plate 31. The play reducing portion 60 is provided between the pair parts whose positional relationship changes with the rotation of the plate 31. Specifically, a spacer is disposed between the pair parts whose positional relationship changes with the rotation of the plate 31. The play reducing portion 60 is provided on this spacer. In the present embodiment, the first spacer 61 is provided to the inner connection rail guide 35. A second spacer 62 is provided for the outer connecting rail guide 16. A third spacer 63 is provided for the inner guide 37A of the plate 31. A fourth spacer 64 is provided for the outer guide 37 B of the plate 31. The play reducing portion 60 is provided to each of the first spacer 61 to the fourth spacer 64.

The first spacer 61 will be described with reference to FIGS. 18, 19 and 20. FIG.
The first spacer 61 is provided on the upper surface of the portion of the inner arm 33A where the connection rail guide 35 is provided. The first spacer 61 has a hole 61 a of the same shape as the connection rail guide 35. The first spacer 61 is disposed between the inner arm 33A and the contact portion 54x of the second slide pin 54 in the vertical direction DZ. As the plate 31 rotates, the contact portion 54 x slides on the first spacer 61. The first spacer 61 is formed of metal. The contact portion 54 x is formed of a material softer than the first spacer 61. For example, the contact portion 54x is formed of a resin. This suppresses the generation of abnormal noise.

  The first spacer 61 has a first portion 61 x and a second portion 61 y in the moving direction of the second slide pin 54. The first portion 61x shows a portion where the second slide pin 54 is disposed when the plate 31 is disposed at the first rotational position. The second portion 61y shows a portion where the second slide pin 54 is disposed when the plate 31 is disposed at the second rotational position. The first portion 61x and the second portion 61y correspond to the above-described play reduction unit 60. The first portion 61 x and the second portion 61 y are configured as follows so as to exhibit the function as the play reduction unit 60.

  The thickness widths TA and TB of the first portion 61x and the second portion 61y of the first spacer 61 are the thickness width TC of the middle portion 61m between the first portion 61x and the second portion 61y (thickness width in the vertical direction DZ) Greater than. In the present embodiment, in the first spacer 61, the upper surface with which the contact portion 54x of the second slide pin 54 contacts is configured as follows. The upper surfaces of the first portion 61x and the second portion 61y are disposed higher than the position of the upper surface of the middle portion 61m between the first portion 61x and the second portion 61y in the vertical direction DZ. Specifically, the upper surface of the first spacer 61 is flat at the first portion 61x, inclined so as to gradually descend from the first portion 61x toward the intermediate portion 61m, and flat at the intermediate portion 61m, It inclines so that it may rise gradually toward the 2nd part 61y from middle part 61m, and it is constituted so that it may become flat in the 2nd part 61y.

The second spacer 62 will be described with reference to FIGS. 21 and 22.
The second spacer 62 is provided on the lower surface of the connection rail guide 16. Between the second spacer 62 and the upper rail 12, a space SY is provided in which the contact portion 53x of the first slide pin 53 can move. The second spacer 62 has a hole 62 a of the same shape as the connection rail guide 16. The second spacer 62 is disposed between the connection rail guide 16 and the contact portion 53x of the first slide pin 53 in the vertical direction DZ. The contact portion 53 x slides on the second spacer 62 as the plate 31 rotates. The second spacer 62 is formed of metal. The contact portion 53 x is formed of a softer material than the second spacer 62. For example, the contact portion 53x is formed of a resin. This suppresses the generation of abnormal noise.

  The second spacer 62 has a first portion 62 x and a second portion 62 y in the moving direction of the first slide pin 53. The first portion 62x shows a portion where the first slide pin 53 is disposed when the plate 31 is disposed at the first rotational position. The second portion 62y shows a portion where the first slide pin 53 is disposed when the plate 31 is disposed at the second rotational position. The first portion 62x and the second portion 62y correspond to the above-described play reduction unit 60. The first portion 62x and the second portion 62y are configured as follows so as to exhibit the function as the play reduction portion 60.

  The thickness widths TD and TE of the first portion 62x and the second portion 62y of the second spacer 62 are the thickness TF of the middle portion 62m between the first portion 62x and the second portion 62y (thickness width in the vertical direction DZ) Greater than. In the present embodiment, in the second spacer 62, the lower surface with which the contact portion 53x of the first slide pin 53 contacts is configured as follows. The lower surfaces of the first portion 62x and the second portion 62y are disposed lower than the position of the lower surface of the middle portion 62m between the first portion 62x and the second portion 62y in the vertical direction DZ. Specifically, the lower surface of the second spacer 62 is flat at the first portion 62x, inclined so as to gradually rise from the first portion 62x toward the middle portion 62m, and flat at the middle portion 62m, It inclines so as to gradually descend from the middle portion 62m toward the second portion 62y, and is configured to be flat at the second portion 62y.

The third spacer 63 will be described with reference to FIGS. 23, 24 and 25. FIG.
The third spacer 63 is provided on the lower surface of the portion of the plate 31 where the inner guide 37A is provided. The third spacer 63 has a hole 63a having the same shape as the inner guide 37A. The third spacer 63 is disposed between the plate 31 and the upper wall 26 of the inner sliding member 25A in the vertical direction DZ.

  The third spacer 63 has a first portion 63x and a second portion 63y in the moving direction of the engaging portion 25b. The first portion 63x indicates a portion where the engaging portion 25b is disposed when the plate 31 is disposed at the first rotational position. The second portion 63y indicates a portion where the engaging portion 25b is disposed when the plate 31 is disposed at the second rotational position. The first portion 63x corresponds to the above-described play reduction unit 60. The first portion 63x is configured as follows so as to exhibit the function as the play reduction unit 60.

  The thickness width TG of the first portion 63x of the third spacer 63 is larger than the thickness width TH (thickness width in the vertical direction DZ) of the portion other than the first portion 63x. In the present embodiment, in the third spacer 63, the lower surface with which the inner sliding member 25A contacts is configured as follows. The lower surface of the first portion 63x is disposed at a position lower than the position of the lower surface of the portion other than the first portion 63x in the vertical direction DZ. Specifically, the lower surface of the third spacer 63 is flat at the first portion 63x, inclined so as to gradually rise from the first portion 63x to the middle portion 63m, and flat at the middle portion 63m, The middle portion 63m extends toward the second portion 63y, and the second portion 63y is configured as a flat surface extending from the middle portion 63m.

  The fourth spacer 64 is disposed between the plate 31 and the outer sliding member 25B in the vertical direction DZ. For example, the fourth spacer 64 is provided on the lower surface of the portion of the plate 31 where the outer guide 37B is provided. The structure of the fourth spacer 64 conforms to the structure of the third spacer 63.

  The operation of this modification will be described. It is preferable that the position of the plate 31 be stable when the plate 31 is in the first rotational position, since the user is seated when the seat rotation device 5 is in the reference posture. Further, it is further preferable that the position of the plate 31 be stable when the plate 31 is in the second rotation position, since the user is seated when the seat rotation device 5 is in the post-rotation posture. On the other hand, it is preferable that the plate 31 can be rotated with a small force from the viewpoint of energy saving. From such a thing, it is preferable that the position of the plate 31 be stable at the specified rotational position of the plate 31. In this respect, the play reduction portion 60 of the sheet rotation device 5 reduces the play of the plate 31 in the vertical direction DZ when the plate 31 is disposed at the specified rotational position. As a result, when the plate 31 is disposed at the specified rotational position, the position of the plate 31 is stabilized, and rattling of the plate 31 is suppressed.

The effects of this modification will be described below.
(A1) As described above, in this modification, the play reduction unit 60 is further provided. The play reduction portion 60 is a play between pair parts when the plate 31 is disposed at a prescribed rotational position with respect to the pair of fixed rails 24 with respect to a plurality of pair parts that move relative to each other by rotation of the plate 31 Make the gap smaller. As an example of the pair component, the pair of the inner arm 33A and the contact portion 54x of the second slide pin 54, the pair of the connection rail guide 16 and the contact portion 53x of the first slide pin 53 described above, the plate 31 and the inner slide A pair with the moving member 25A and a pair with the plate 31 and the outer sliding member 25B can be mentioned. According to such a configuration, when the plate 31 is disposed at a predetermined rotation angle, the play in the vertical direction DZ of the plate 31 is reduced at the position of the rotation angle, whereby the position of the plate 31 is stabilized. , Rattling is suppressed.

  (A2) For example, in a plurality of pair parts that move relative to each other as the plate 31 rotates, at least one of the at least one pair parts has the play reduction portion 60. The thickness width of the play reduction portion 60 in the vertical direction DZ is larger than the thickness width of the portion adjacent to the play reduction portion 60 in the direction along the relative movement of the pair parts. According to this configuration, the play reduction portion 60 can be easily formed.

  (A3) When the plate 31 is disposed at a prescribed rotational position (for example, the first rotational position and the second rotational position), the portion where the play reducing portion 60 is provided is an engaging member (engaging portion) 25b, the first slide pin 53, and the second slide pin 54) are disposed. According to this configuration, when the plate 31 is disposed at a prescribed rotational position (for example, the first rotational position and the second rotational position), the play in the vertical direction DZ of the plate 31 is reduced, and the position of the plate 31 is reduced. Stabilize.

  -The part in which the play reduction part 60 is provided is not limited to the said example. For example, a spacer may be provided at a predetermined site between the fixed rail 24 and the sliding member 25. Alternatively, a spacer may be provided at a predetermined portion between the first rail 51 and the second rail 52. Alternatively, a spacer may be provided at a predetermined site between the plate 31 and the base 13.

  -Although the play reduction part 60 is comprised as a spacer in said description, the play reduction part 60 may be comprised as a convex part or a level | step-difference part in existing members (for example, plate 31 grade | etc.,). According to this configuration, the number of parts can be reduced.

  A plunger may also be used as the play reduction portion 60. The plunger has a member (eg, a steel ball) biased by a spring. The plunger is used with or instead of the spacer.

  AR: range, AS: front side range, C: rotation center, CL: intermediate line, CP: center point, CRP: intersection point, D1: first distance, D2: second distance, DG1: first planned rotation angle, DG2: 2nd planned rotation angle, DGM ... maximum rotation angle, DX ... vehicle width direction, DY ... vehicle longitudinal direction, DZ ... up and down direction, MCP ... nearest point, MFP ... farthest point, ML1 ... middle line, ML2 ... middle line, PE: end point, PL: perpendicular, PS: start point, PT1: first position, PT2: second position, PT3: third position, r1: radius, r2: radius, SA: accommodation space, SB: space area, SC ... Space, SL1: first boundary line, SL2: second boundary line, SL3: third boundary line, SX: space, SY: space, TA, TB, TC, TD, TE, TF, TG, TH: thickness width, W: Width, 1: Seat, 1a: Seat cushion, 1b: Sea Back 1x Seat 2 Vehicle door 3 Vehicle central portion 4 Vehicle floor 5 Seat rotation device 6 Support device 9 Support rail 10 Slide rail 11 Lower rail 12 Upper rail , 13 Base, 14 Base body, 14a Bottom, 14b Arm, 15 Fixing part 16 Linking rail guide 19 Bracketing 21 Support part 23 Guide rail 24 Fixing rail 25 25 sliding member 25a sliding main body portion 25A inner sliding member 25b engagement portion 25B outer sliding member 25s supporting surface 26 upper wall 31 plate 31a Center of rotation, 32 body, 33 arm, 33A inner arm, 33B outer arm, 34 fastening portion, 35 connection rail guide, 36 rail support portion, 37 guide, 37A inner guide 37B: outer guide, 38: guide surface, 40: drive device, 41: motor, 42: reduction gear, 43: output portion, 44: output shaft, 45: support portion, 46: coupling portion, 50: connection rail, 51 ... first rail, 51a ... inner end, 51b ... outer end, 52 ... second rail, 52a ... inner end, 52b ... outer end, 53 ... first slide pin, 53x ... contact portion, 54 ... Second sliding pin 54x contact portion 60 play reduction portion 61 first spacer 61a hole 61m intermediate portion 61x first portion 61y second portion 62 second spacer 62a: hole 62m: middle portion 62x: first portion 62y: second portion 63: third spacer 63a: hole 63m: middle portion 62x: first portion 62y: second portion 64: Fourth spacer.

Claims (8)

A plate for supporting the seat, and a pair of guide rails arranged in parallel in the vehicle width direction to support the plate;
The guide rail has a fixed rail and a sliding member which supports the plate and slides on the fixed rail.
The plate has a guide for guiding the sliding member,
The guide is configured such that the plate rotates while reciprocally moving the pair of sliding members, or the plate rotates based on the reciprocal movement of the pair of sliding members. . The vehicle further comprises a pair of slide rails for moving the seat in the longitudinal direction of the vehicle,
The seat rotating device according to claim 1, wherein the slide rail includes a lower rail and an upper rail sliding on the lower rail, and the pair of fixed rails are along the upper rail. The sheet rotation device according to claim 2, wherein a rotation center portion of the plate is supported by a base connecting the pair of upper rails. It further comprises a motor for rotating the plate directly or indirectly,
The sheet rotation device according to claim 3, wherein the motor is attached to the base. The sheet rotation device according to any one of claims 1 to 4, wherein the rotation center of the plate is disposed between the pair of guide rails. A plurality of pair parts which move relative to each other by rotation of the plate, a play reduction portion which reduces the play between the pair parts when the plate is disposed at a prescribed rotational position with respect to the pair of fixed rails The sheet rotation device according to any one of claims 1 to 5, further comprising: At least one of at least one pair of the plurality of paired parts that move relative to each other by the rotation of the plate, includes the play reduction portion,
The sheet rotation device according to claim 6, wherein a thickness width of the play reduction portion is larger than a thickness width of a portion adjacent to the play reduction portion in a direction along the relative movement of the pair component. An engagement member for engaging the pair of parts with each other;
The sheet rotation device according to claim 7, wherein the portion where the play reduction portion is provided is a portion where the engagement member is disposed when the plate is disposed at a predetermined rotational position.