JP6213377B2 - Tilt sheet - Google Patents

Description

  The present invention relates to a tilt sheet provided with a tilt mechanism.

  There is known a structure in which a seat holder is disposed to be tiltable with respect to a tilt base member by a tilt mechanism, and a seat body having a seat cushion and a seat back is disposed on the seat holder. In addition, a tilt lock mechanism having a tilt lock member that removably locks the sheet holder at the initial tilt position is disposed between the tilt base member and the sheet holder, while the tilt lock mechanism is provided on the sheet holder. An operation member for tilting for unlocking is provided. The tilt sheet is disclosed in, for example, Patent Document 1.

JP2013-67328A

  By the way, in the above tilt seat, for example, when the caregiver gets off the seated person (caregiver) sitting on the seat body, when the seat body is tilted to the tilt end position, first, the seat Since the tilt operation member disposed on the holder is unlocked to unlock the tilt lock mechanism, the seat body (sheet holder) must be tilted with respect to the tilt base member. It was.

  In view of the above problems, an object of the present invention is to provide a tilt sheet that can easily perform an unlocking operation of a tilt lock mechanism and a tilt operation of a seat body.

In order to solve the above-described problem, a tilt sheet according to a first aspect of the present invention is provided with a tilt base member that rotates when a rotation mechanism operates, and is tiltable with respect to the tilt base member by the tilt mechanism. A tilt seat provided with a seat holder and a seat body disposed on the seat holder and having a seat cushion and a seat back, wherein the tilt mechanism is disposed on the front side in the front-rear direction of the tilt base member. A tilt shaft for connecting the seat holder so that the seat holder can tilt, a tilt-side rear portion of the tilt base member, and a tilt portion in which both ends are connected by a connecting shaft across the front-back direction rear portion of the seat holder And a link between the tilt base member and the sheet holder. A tilt lock mechanism having a tilt lock member that locks in place is disposed, a grip member is disposed on the seat back, and a tilt cable is attached to the tilt lock member at or near the grip member. An operation member for tilting that can be unlocked via the rotation mechanism is provided, and the seat main body supported by the tilt base member by the operation of the rotation mechanism is from an initial rotation position to a position just before the rotation end position that faces the outside of the vehicle. A tilt prevention interlock mechanism that disables the tilt operation of the tilt mechanism during rotation is provided .

  According to the first invention, when the caregiver gets off the seated person (caregiver) sitting on the seat body, when the seat body is tilted to the tilt end position, the grip member of the seat back is gripped. In this state, the grip operating member or the tilt operating member disposed in the vicinity thereof is unlocked, and the seat body (sheet holder) is then tilted with respect to the tilt base member while the grip member is being gripped. By operating, the seat body can be easily tilted to the tilt end position.

  A tilt sheet according to a second aspect of the present invention is the first tilt sheet, and a damper is provided on the connecting shaft at one end of the tilt link to reduce the operation speed during the tilt operation. It is characterized by that.

  According to the second invention, by rotating the tilt link about one connecting shaft of the tilt link, the seat main body is tilted with the tilt shaft as a fulcrum with respect to the tilt base member. The operation speed when the seat body and the seat body are tilted with the tilt axis as a fulcrum (particularly when tilted down) is reduced by the damper. Further, since the damper is disposed on the axis of one connecting shaft of the tilt link, compared to the case where the damper is disposed on the tilt shaft, the damper is provided with respect to the torque around the tilt axis due to the lever ratio. The input torque to can be suppressed small. For this reason, even when a small damper having a small capacity is used, the operation speed at the time of tilting can be satisfactorily reduced. Furthermore, by using a small damper, the damper can be easily disposed in a limited space between the tilt base member and the seat holder. Furthermore, it is easy to make the tilt seat thinner and secure a foot space for the rear seat.

  A tilt sheet according to a third aspect is the tilt sheet according to the first or second aspect, wherein the sheet holder is moved from a tilt end position to a tilt initial position between the tilt base member and the sheet holder. An auxiliary spring for tilting that is drawn in is provided.

  According to the third invention, when the seat holder is tilted from the tilt end position (tilt down position) toward the initial tilt position (tilt up position), the tilt operation is lightly performed by the pulling force (biasing force) of the tilt auxiliary spring. (Tilt up operation).

It is a perspective view which shows the rotation tilt sheet which concerns on Example 1 of this invention. FIG. 4 is a perspective view showing a base member, a slide table, a turntable, and a sheet holder separately for a rotating tilt sheet. It is a perspective view which shows the state with which the base member of the rotation tilt sheet | seat, the slide table, the turntable, and the sheet | seat holder were assembled | attached. It is a top view which shows the arrangement | positioning state of the 1st cable for a slide, the 2nd cable for a slide, and the cable for rotation. It is a perspective view which shows the arrangement | positioning state of the cable for tilting. It is a perspective view which shows a tilt link and a shaft damper. It is a sectional side view which shows the tilt mechanism arrange | positioned between the turntable and the sheet holder. It is a perspective view which shows the operation lever for tilts. It is a perspective view which shows the tilt lock member of a tilt lock mechanism. It is a perspective view which shows the link mechanism of a slide lock mechanism and a slide lock release mechanism. It is a rear sectional view showing the assembled state of the link mechanism of the slide lock mechanism and the slide lock release mechanism by a broken line from the rear. It is explanatory drawing which shows a rotation lock mechanism. It is a top view which shows the rotation lock member of a rotation lock mechanism. It is a perspective view which shows the rotation lock member of a rotation lock mechanism. It is a perspective view which shows the latching member of a tilt prevention interlock mechanism. It is a perspective view which shows the state in which the tilt lock body and tilt lock release body of the tilt prevention interlock mechanism were assembled | attached coaxially. It is a perspective view which shows the state by which the rotation lock body and rotation lock release body of the rotation prevention interlock mechanism were assembled | attached coaxially. It is a perspective view which shows the relationship between the latching member of a tilt prevention interlock mechanism, a rotation lock body, and a rotation lock release body. It is a perspective view which shows the rotation end bracket by which the tilt lock cancellation | release operation body and the rotation prevention body were arrange | positioned. It is a perspective view which shows the state which the rotation lock body engaged with the rotation prevention body, and was locked when the turntable was arrange | positioned in the rotation end position. It is a top view which simplifies and shows the state by which the slide table was arrange | positioned with respect to the base member in the back end position, and the sheet holder was piled up with the turntable on the slide table. It is a top view which shows a tilt prevention interlock mechanism when a slide table is arrange | positioned with respect to a base member in a back end position, and it exists in the state where the sheet holder with the turntable was piled up on the slide table. It is a side view which shows a rotation prevention interlock mechanism when a slide table is arrange | positioned with respect to a base member in a back end position, and it exists in the state with which the sheet holder with the turntable was piled up on the slide table. It is a top view which simplifies and shows the state where the slide table was slid forward by a predetermined amount with respect to the base member, and the sheet holder was rotated together with the turntable by a predetermined angle on the slide table. FIG. 5 is a plan view showing a tilt prevention interlock mechanism when a slide table is slid forward by a predetermined amount with respect to a base member, and a seat holder is rotated together with a turntable by a predetermined angle on the slide table. It is a side view showing a rotation prevention interlock mechanism when the slide table is slid forward by a predetermined amount with respect to the base member, and the seat holder is rotated together with the turntable by a predetermined angle on the slide table. It is a top view which simplifies and shows the state by which the slide table was slid with respect to the base member to the advance end position, and the sheet holder was rotated on the slide table to the rotation end position facing the vehicle exterior. FIG. 7 is a plan view showing a tilt prevention interlock mechanism when the slide table is slid to the forward end position with respect to the base member, and the turntable and the seat holder are rotated to the rotation end position facing the vehicle outside on the slide table. is there. FIG. 5 is a side view showing an anti-rotation interlock mechanism when the slide table is slid to the forward end position with respect to the base member, and the turntable and the seat holder are rotated to the rotational end position facing the vehicle outer side on the slide table. is there. The slide table is slid to the forward end position with respect to the base member, and the seat holder is rotated on the slide table to the rotation end position with the turntable facing the vehicle outside, and the seat holder is tilted to the tilt end position with respect to the turntable. It is a top view which simplifies and shows a state. The slide table is slid to the forward end position with respect to the base member, and the seat holder is rotated on the slide table to the rotation end position with the turntable facing the vehicle outside, and the seat holder is tilted to the tilt end position with respect to the turntable. It is a top view which shows the tilt prevention interlock mechanism in a state. The slide table is slid to the forward end position with respect to the base member, and the seat holder is rotated on the slide table to the rotation end position with the turntable facing the vehicle outside, and the seat holder is tilted to the tilt end position with respect to the turntable. It is a side view which shows the rotation prevention interlock mechanism when it exists in a state. It is explanatory drawing which shows the state by which the inner buckle of the seatbelt laid down forward when a seat main body is rotated with a seat holder with respect to a turntable. When the roller which rotates a turntable is arrange | positioned in the linear hole part of the cam hole of a cam plate, it is explanatory drawing which shows the state by which a slide lock member is unlocked by the lower link and link rod of a slide lock release mechanism. When the roller for rotating the turntable is arranged in the middle of the curved hole portion of the cam hole of the cam plate and the turntable is arranged in the middle of the rotation, the cam pin of the link rod of the slide lock release mechanism is moved to the cam surface of the cam plate. It is explanatory drawing which shows the state which is arrange | positioned at a notch-shaped avoidance part and a slide lock member is locked. It is explanatory drawing which shows the state by which the slide lock member is hold | maintained in a lock release state by the cam pin of the lower link of a slide lock release mechanism sliding along the cam surface of a cam plate.

  A mode for carrying out the present invention will be described in accordance with an embodiment.

  A first embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the slide rotation seat includes a base member 10, a slide table 20, a turntable 50, a seat holder 70, and a seat body 1 from the passenger compartment floor side upward. ing. A slide rail mechanism 30 is disposed between the base member 10 and the slide table 20, and a rotation mechanism 60 is disposed between the slide table 20 and the turntable 50, and the turntable 50 and the seat holder 70. Between them, a tilt mechanism 80 is arranged so that it can slide, rotate and tilt.

  As shown in FIG. 2, the base member 10 includes left and right side frame portions 11 fixed to the passenger compartment floor, a front frame portion 12 that connects the front and rear portions of the side frame portions 11, and a rear frame portion 13. And is formed in a rectangular frame shape. On the upper surfaces of both side frame portions 11, left and right slide rails 31 constituting the slide rail mechanism 30 in cooperation with a slider 35 described later are arranged in parallel in the front-rear direction.

  As shown in FIG. 2, the slide table 20 has a rectangular plate shape, and slide mounting portions 21 that are stepped upward are formed on the left and right sides thereof. A slider 35 that is slidably fitted along the slide rail 31 is disposed on the lower surface of the slide mounting portion 21. The slider 35 is formed in an inverted U-shaped cross section so as to cover the slide rail 31, and the slide operation of the slider 35 is light and easy between the opposing inner wall surface and both side surfaces of the slide rail 31. Balls for smoothing are arranged as necessary.

  As shown in FIGS. 2 and 11, a rotation mechanism 60 having an outer ring 61, an inner ring 62, and rolling elements 63 (balls or rollers) is disposed between the slide table 20 and the turntable 50. In the first embodiment, an annular outer ring 61 is disposed on the upper surface of the slide table 20, and a hole 25 is formed along the inner peripheral surface of the outer ring 61.

  As shown in FIGS. 2 and 11, the turntable 50 includes a bottom plate portion 51 having a square plate shape, and left and right side plate portions 52 that are bent at right angles upward from the left and right edges of the bottom plate portion 51. It integrally has a rear plate portion 53 bent upward at a right angle from the rear edge of the bottom plate portion 51. An inner ring plate 55 having high rigidity is fixed to the lower surface of the bottom plate portion 51, and an inner ring 62 corresponding to the outer ring 61 is disposed on the lower surface of the inner ring plate 55. In the annular space, a plurality of rolling elements 63 are arranged to be able to roll.

  As shown in FIG. 2, the seat holder 70 is provided with the seat cushion 2 of the seat body 1, and the left and right side frame portions 71 and the front frame that connects the front and rear portions of the both side frame portions 71. It has a part 73 and a rear frame part 74 and is formed in a rectangular frame shape.

  As shown in FIGS. 3, 5, and 6, the tilt mechanism 80 disposed between the turntable 50 as the tilt base member and the seat holder 70 is provided at the front side in the front-rear direction of the turntable 50. Tilt 81 in which both ends are connected by connecting shafts 83 and 84 straddling the tilt shaft 81 for tiltingly connecting 70, the rear side portion of the turntable 50 in the front-rear direction and the rear side portion of the seat holder in the front-rear direction. And a link 82. A damper 85 is disposed on the connecting shaft 84 at one end of the tilt link 82 to reduce the impact during tilting.

  In the first embodiment, the damper 85 is constituted by a shaft damper, and is supported by the bracket 55 on the rear plate portion 53 of the turntable 50. In the first embodiment, as shown in FIG. 7, the sheet main body 1 is moved from the tilt end position (tilt down position) together with the sheet holder 70 between the rear portion of the turntable 50 and the rear portion of the sheet holder 70. A tilt assist spring 88 is provided that is pulled (biased) toward the initial tilt position (tilt up position). The state shown by the two-dot chain line in FIG. 7 is the tilt-down position, and the state shown by the solid line is the tilt-up position.

  As shown in FIG. 7, a tilt lock mechanism 240 is disposed between the turntable 50 as a tilt base member and the sheet holder 70 so as to detachably lock the sheet holder 70 at the initial tilt position. The tilt lock mechanism 240 includes a tilt lock member 244 and a tilt lock striker 250. In the first embodiment, as shown in FIG. 7, a tilt lock bracket 241 is attached to the rear panel portion 54 a of the seat holder 70, and the tilt lock member 244 is centered on the tilt lock shaft 242 with respect to the tilt lock bracket 241. Is pivotally mounted at the top. The tilt lock member 244 is provided with a horizontal shaft-shaped lock portion 244a at the lower portion thereof, and is biased in the lock direction by a spring 243 (see FIG. 9).

  On the other hand, as shown in FIG. 7, a tilt lock striker 250 is disposed across the rear plate portion 53 and the bottom plate portion 51 of the turntable 50, and the tilt lock striker 250 is engaged with the lock portion of the tilt lock member 244. A tilt lock groove 251 that is detachably engaged is formed.

  As shown in FIGS. 5 and 8, a grip member 5 used at the time of a tilt operation by a caregiver, for example, is provided on the outer shoulder portion of the seat back 3, and a lever is provided in the vicinity of the grip member 5. A tilt operation lever 403 as a tilt operation member is attached to be rotatable about a lever shaft 402 via a bracket (not shown). A knob mounting portion 404 having an inverted L-shaped side surface extends from the upper portion of the tilt operation lever 403, and an operation knob 405 is assembled to the knob mounting portion 404. A cable connector 406 extends below the tilt operation lever 403. Then, by holding the grip portion of the grip member 5 and pushing the operation knob 405 of the tilt operation lever 403 with a fingertip (for example, thumb), the tilt lock member is connected via the tilt cable 410 described below. 244 can be unlocked.

  As shown in FIGS. 5, 8, and 9, a tilt cable 410 that unlocks the tilt lock member 244 is disposed between the tilt operation lever 403 and the tilt lock member 244. The tilt cable 410 is configured by a remote operation cable including an outer cable 411 and an inner cable 412. As shown in FIG. 8, one end of the inner cable 412 of the tilt cable 410 is connected to a cable connection body 406 extending to the lower part of the tilt operation lever 403. Furthermore, as shown in FIG. 9, the other end of the inner cable 412 of the tilt cable 410 is connected to a cable connector 246 provided on the tilt lock member 244.

  As shown in FIGS. 10 and 11, a slide lock mechanism 200 that prevents the slide table 20 from moving in the sliding direction is disposed between the base member 10 and the slide table 20. The slide lock mechanism 200 includes both left and right slide lock members 203 and both left and right slide lock striker members 210 for the slide lock members 203.

  In the first embodiment, case-like lock holding members 201 are respectively attached to the left and right portions of the lower surface of the slide table 20 by bolts or the like on the front and rear attachment pieces. A slide lock member 203 is attached to the lock holding member 201 so as to be locked and unlocked by a slide lock shaft 202 in the front-rear direction, and is urged in a lock direction by a spring 208. A plurality of lock claws 204 are extended upward at one end of the slide lock member 203.

  On the other hand, as shown in FIGS. 4 and 11, a slide lock striker member 210 extending in the front-rear direction is fixed to a portion of the base member 10 positioned below the left and right slide rails 31. The member 210 is formed with a plurality of slide lock holes 211 that are detachably engaged with the plurality of lock claws 204 of the slide lock member 203 at a predetermined interval in the front-rear direction.

  As shown in FIGS. 1 to 3, a slide operation lever 350 (corresponding to the slide operation member of the present invention) mainly used by a seated person is provided on the inner side of the front portion of the seat holder 70 on the lever shaft 351. It is attached so that rotation is possible centering on. Further, on the outside of the front portion of the seat holder 70, a slide / rotation operation lever 362 that serves both as a slide operation member and a rotation operation member mainly for use by a caregiver (the slide operation according to the present invention). (Corresponding to a member) is attached so as to be rotatable about the lever shaft 363.

  As shown in FIGS. 4, 10, and 11, a slide lock release mechanism 300 is disposed between the slide lock member 203, the slide operation lever 350, and the slide / rotation operation lever 362. The slide lock release mechanism 300 includes a first slide cable 330 and a second slide cable 340 disposed on the turntable 50 side, and a link mechanism 301 disposed on the slide table 20 side. Yes.

  As shown in FIG. 10 and FIG. 11, the link mechanism 301 is an upper and lower member that is rotatably disposed via a base bracket 302 at a portion of the slide table 20 positioned between the left and right slide lock release mechanisms 300. Direction link hinge shaft 303, upper link 306 arranged to rotate integrally with the upper shaft portion of link hinge shaft 303, lower link 310 arranged to rotate integrally with the lower shaft portion, and lower link 310 And a link rod 320 for connecting the slide lock members 203 to each other, and a link pin 307 protruding on the upper link 306. And a separate link 324 arranged to be rotatable. Further, as shown in FIG. 10, a cam pin 312 projects downward from the lower link 310.

  As shown in FIGS. 34 to 36, the cam surface 48 corresponding to the lower link 310 cam pin 312 has a cam mechanism 40 (described later) that rotates the turntable 50 within a set angle range in conjunction with the slide operation of the slide table 20. It is formed along the front-rear direction of one side surface of the cam plate 41. As shown in FIG. 34, when the roller 47 that rotates the turntable 50 is disposed in the straight hole 43 of the cam hole 42 of the cam plate 41, the cam pin 312 does not interfere with the cam surface 48 of the cam plate 41. Set to In addition, while the turntable 50 starts to rotate and rotates to the rotation end position, the cam pin 312 is moved and guided along the cam surface 48, so that the slide lock member 203 is maintained in the unlocked state. (See FIGS. 10, 35, and 36). Further, in the first embodiment, as shown in FIG. 35, when the roller 47 is disposed in the middle of the curved hole portion 44 of the cam hole 42 of the cam plate 41 and the turntable 50 is disposed in the middle of rotation, the slide The cam surface 48 of the cam plate 41 is formed with a notch-shaped avoiding portion 48a that avoids the guide of the cam pin 312 of the lower link 310 so that the locking member 203 can be locked.

  A first slide cable 330 is disposed between the slide operation lever 350 and the separate link 324. Further, a second slide cable 340 is disposed between the slide / rotation operation lever 362 and the separate link 324. Both the first and second slide cables 330 and 340 are constituted by remote operation cables including outer cables 331 and 341 and inner cables 332 and 342, respectively. As shown in FIG. 3, one end of the inner cable 332 of the first slide cable 330 is connected to a cable connector 352 that is interlocked with the lever operation of the slide operation lever 350.

  Furthermore, as shown in FIG. 4, the other end of the inner cable 332 of the first sliding cable 330 is connected to a connecting hole 325 formed in the separate link 324. One end of the inner cable 342 of the second slide cable 340 is connected to a cable connector 365 that is interlocked with the lever operation of the slide / rotation operation lever 362. Furthermore, the other end of the inner cable 342 of the second slide cable 340 is connected to a connecting hole 326 formed in the separate link 324. Note that the two connecting holes 325 and 326 of the separate link 324 are formed by arc-shaped long holes on the inner peripheral side and the outer peripheral side with the support shaft 323 of the separate link 324 as the center.

  As shown in FIGS. 4 and 12 to 14, a rotation lock mechanism 220 that prevents the turntable 50 from rotating in the rotation direction is disposed between the slide table 20 and the turntable 50. The rotation lock mechanism 220 includes a rotation lock member 222 disposed on the lower surface side of the turntable 50 so as to be rotatable about a rotation lock shaft 221, and a notch-shaped lock groove formed at one end of the rotation lock member 222. 224 detachably engages with a pre-rotation lock striker 223 disposed on the slide table 20 at a position where it is detachably engaged with the 224 and a post-rotation lock claw 225 formed at the other end of the rotation lock member 222. And a post-rotation lock striker 230 disposed on the slide table 20 at the mating position. Further, the post-rotation lock striker 230 is formed in an arc shape concentric with the rotation center of the rotation mechanism 60, and the arc portion is engaged with the post-rotation lock claw 225 of the rotation lock member 222 in a releasable manner. A single rotation lock hole 231 is formed.

  As shown in FIGS. 4 and 12, a rotation cable 370 is disposed between the rotation lock member 222 and the slide / rotation operation lever 362. The rotation cable 370 is constituted by a remote operation cable including an outer cable 371 and an inner cable 372. As shown in FIG. 3, one end of the inner cable 372 of the rotation cable 370 is connected to a cable connector 365 that is interlocked with the lever operation of the slide / rotation operation lever 362. As shown in FIG. 13, the other end of the inner cable 372 of the rotation cable 370 is connected to a cable connector 226 provided on the rotation lock member 222.

  Further, in the first embodiment, as shown in FIGS. 2 and 11, the turntable 50 is moved between the base member 10 and the rotation mechanism 60 in the range of the set angle in conjunction with the slide operation of the slide table 20. A rotating cam mechanism 40 is provided. In the first embodiment, a cam plate 41 is provided between the front frame portion 12 and the rear frame portion 13 of the base member 10, and the cam plate 41 cooperates with a roller 47 as a cam follower. Thus, a cam hole 42 (may be a cam groove) constituting the cam mechanism 40 is formed. The cam hole 42 includes a straight hole portion 43 that extends linearly in the front-rear direction at the rear portion thereof, and a curved hole portion 44 that is curved from the front end of the straight hole portion 43 toward the vehicle outer side. It has a continuous shape in width. On the other hand, a support shaft 46 projects downward from the inner ring 62 of the rotation mechanism 60 toward the cam hole 42, and a roller 47 that rolls along the cam hole 42 on the lower outer peripheral surface of the support shaft 46. Is rotatably mounted.

As shown in FIGS. 2, 15, and 16, a tilt prevention interlock mechanism 90 is disposed between the slide table 20, the turntable 50, and the sheet holder 70. The tilt prevention interlock mechanism 90 is from the initial rotation position of the seat body 1 shown in FIG. 21 (the storage position where the turntable 50 is aligned with the slide table 20) to just before the rotation end position facing the vehicle outer side shown in FIG. While being rotated, a tilt lock state is established in which the tilt operation of the sheet body 1 is disabled. Further, as shown in FIG. 27 , when the sheet main body 1 is rotated to the rotation end position, a tilt lock release state that enables the tilt operation of the sheet main body 1 is made. In the first embodiment, as shown in FIGS. 15, 16, and 19, the tilt prevention interlock mechanism 90 includes a tilt lock body 93, a tilt lock release body 95, and a locking member 111 having a tilt prevention groove 112. And a tilt lock release actuating body 121.

  The locking member 111 is attached to the rear side of the rear frame portion 74 of the seat holder 70 via a mounting bracket 110. The locking member 111 is formed with a tilt prevention groove 112 having an opening on the side. Has been. Further, a pin-shaped rotation unlocking operating body 113 of the rotation prevention interlock mechanism 100, which will be described in detail later, is fixed to the locking member 111 so as to protrude in the lateral direction.

  As shown in FIG. 16, the tilt lock body 93 and the tilt lock release body 95 are rotatably supported at the shaft intermediate portion with respect to the tilt lock support body 91 fixed at a predetermined position of the bottom plate portion 51 of the turntable 50. One end portions are respectively fixed to the upper and lower portions of the support shaft 92 (vertical axis), and are attached so as to protrude horizontally and to rotate integrally. The tilt lock body 93 is disposed along the upper surface side of the bottom plate portion 51 of the turntable 50, and the tilt lock release body 95 is disposed along the lower surface side of the bottom plate portion 51 of the turntable 50.

  On the side surface of the tilt lock body 93, a lock portion 94 that is removably inserted into the tilt prevention groove 112 to form a tilt lock state is formed in an overhang shape. Further, the tilt lock body 93 is biased by a spring 98 in a locking direction in which the lock portion 94 is inserted into the tilt prevention groove 112, and the tilt lock release body 95 is rotated when the seat body 1 is rotated to the rotation end position. The tilt lock release actuating body 121 acts on the tilt lock release body 95, and the tilt lock release body 95 is rotated together with the support shaft 92 against the biasing force of the spring 98. It protrudes from the groove 112. That is, the tilt prevention interlock mechanism 90 is unlocked.

  As shown in FIGS. 2 and 19, the rotary end bracket 120 is fixed to a predetermined position of the slide table 20, and when the seat body 1 is rotated to the rotary end position on the rotary end bracket 120. In addition, a pin-shaped tilt lock release operating body 121 that acts on the tilt lock release body 95 to release the lock protrudes vertically. Further, an anti-rotation body 122 of the anti-rotation interlock mechanism 100, which will be described in detail below, projects from the upper surface of the rotation end bracket 120. The anti-rotation body 122 has a rising portion 123 that rises vertically from the upper surface of the rotating end bracket 120 and an anti-rotation piece 124 that is bent horizontally from the upper end of the rising portion 123 and is inverted L. It is formed in a letter shape.

  As shown in FIGS. 2 and 7, the rotation prevention interlock mechanism 100 is disposed between the slide table 20, the turntable 50, and the sheet holder 70. The rotation prevention interlock mechanism 100 is operated when the seat body 1 is tilted to a set tilt end position (or during the tilt) in a state in which the seat body 1 is rotated to the rotation end position and the tilt lock is released. The rotation lock state in which the rotation operation of the seat body 1 is disabled is established, and the rotation lock release state in which the rotation operation of the seat body 1 is enabled when the seat body 1 is returned to the initial tilt position. In the first embodiment, as shown in FIG. 17, the rotation prevention interlock mechanism 100 includes a rotation lock body 103, a rotation lock release body 105, and a pin-like rotation lock release operation body 113 of the locking member 111 described above. And an anti-rotation body 122 of the rotating end bracket 120 described above.

  The rotation lock body 103 and the rotation lock release body 105 are supported on a support shaft 102 (supported by a rotation lock support body 101 fixed to the upper surface of the bottom plate portion 51 of the turntable 50 so as to be rotatable at an intermediate shaft portion. One end is fixed around both end shafts of the horizontal axis) and is attached so as to be integrally rotatable. At the tip of the rotation lock body 103, a hook-shaped lock section 104 is formed that can be engaged with and disengaged from the rotation prevention piece 124 of the rotation prevention body 122 through a hole formed in the bottom plate portion 51 of the turntable 50. ing.

  The rotation unlocking body 105 extends so as to be in contact with the lower surface of the pin-shaped rotation unlocking operating body 113 of the locking member 111 (see FIG. 20). Further, the rotation unlocking body 105 is biased by a spring 108 in a direction in which the rotation unlocking body 105 abuts on the lower surface of the pin-shaped rotation unlocking operating body 113 of the locking member 111. Then, when the seat holder 70 (the sheet main body 1) is tilted (tilted down), and the rotation unlocking operation body 113 is displaced upward in accordance with this, the rotation unlocking body 105 as shown in FIG. Is rotated together with the support shaft 102 upward by FIG. 17 by the biasing force of the spring 108. Thereby, the lock part 104 of the rotation lock body 103 will be in the rotation lock state which can be engaged with the rotation prevention piece 124 of the rotation prevention body 122 of the rotation end bracket 120 (refer FIG. 32).

  On the contrary, when the seat holder 70 (sheet main body 1) is returned to the initial tilt position (tilt up position), the rotation unlocking operation body 113 is displaced downward along with this, the rotation unlocking body. 105 is rotated together with the support shaft 102 in the counterclockwise direction toward FIG. 29 against the biasing force of the spring 108. As a result, the lock portion 104 of the rotation lock body 103 enters an unlocked state in which it is retracted upward from the rotation prevention piece 124 of the rotation prevention body 122.

  Further, in the first embodiment, as shown in FIG. 2, an extension 23 that extends in the horizontal direction is formed at the inner end of the slide table 20, and a buckle bracket 130 is formed on the upper surface of the extension 23. Is fixed. And the inner buckle 132 of a seat belt is connected to the buckle bracket 130 so as to be switchable between a fall position where the lower end portion 132a is tilted forward and a standing position where the seat belt is raised backward from the fall position. . Further, a spring 133 is disposed between the buckle bracket 130 and the inner buckle 132 as a biasing means that biases the inner buckle 132 toward the lying down position.

  The slide rotation sheet according to the first embodiment is configured as described above. Therefore, when a seated person sitting on the seat body 1 slides and adjusts the seat body 1 in the front-rear direction according to his / her preference (see FIGS. 3, 4, 10 and 11), first, the seat person slides. The operating lever 350 is operated in the unlocking direction around the lever shaft 351. Then, the separate link 324 is operated via the first sliding cable 330. By the operation of the separate link 324, the upper link 306, the link hinge shaft 303 and the lower link 310 are rotated in the unlocking direction via the link pin 307, whereby the slide lock member 203 is slide-locked via the link rod 320. It is rotated about the shaft 202 and unlocked.

  Next, with the slide lock member 203 unlocked, the seat main body 1 slides together with the slide table 20, the turntable 50 and the seat holder 70 via the slide rail mechanism 30 with respect to the base member 10 by the seated person. Is done. At this time, the roller 47 rolls along the straight hole 43 of the cam hole 42 of the cam plate 41. The amount of slide adjustment of the seat body 1 in the front-rear direction by the seated person is set by the length in the front-rear direction of the straight hole 43 of the cam hole 42.

  Next, when the caregiver rotates the seat body 1 toward the outside of the vehicle while sliding forward (see FIGS. 3, 4, 10, and 11), first, the caregiver performs a slide / rotation operation. The lever 362 is operated in the unlocking direction around the lever shaft 363. Then, the separate link 324 is operated via the second slide cable 340, and the operation of the separate link 324 causes the upper link 306, the link hinge shaft 303, and the lower link 310 to rotate in the unlocking direction via the link pin 307. As a result, the slide lock member 203 is rotated about the slide lock shaft 202 via the link rod 320 to be unlocked. At the same time, the rotation lock member 222 is rotated about the rotation lock shaft 221 via the rotation cable 370 and unlocked.

  Next, in a state in which the slide lock member 203 and the rotation lock member 222 are unlocked, the caregiver moves the seat together with the slide table 20, the turntable 50, and the sheet holder 70 via the slide rail mechanism 30 to the base member 10. The main body 1 is slid forward. At this time, while the roller 47 rolls along the straight hole 43 of the cam hole 42 of the cam plate 41, the sheet main body 1 is moved together with the slide table 20, the turntable 50 and the sheet holder 70 with respect to the base member 10. Slide forward.

  Subsequently, the slide table 20 is slid forward relative to the base member 10. At this time, the roller 47 rolls along the curved hole portion 44 of the cam hole 42. Thus, together with the turntable 50 and the seat holder 70 via the rotating mechanism 60 having the outer ring 61 and the inner ring 62 rotatably inserted into the inner peripheral surface of the outer ring 61 via a plurality of balls (or rollers). The seat body 1 is rotated toward the outside of the vehicle. Then, the seat body 1 is disposed at a rotation end position that rotates nearly 90 degrees from the initial rotation position and faces the vehicle exterior.

  In the first embodiment, when the sheet main body 1 is rotated toward the outside of the vehicle together with the turntable 50 and the sheet holder 70, and the turntable 50 is disposed in the middle of the rotation, as shown in FIG. 47 is arranged in the middle of the curved hole 44 of the cam hole 42 of the cam plate 41. Then, the cam pin 312 of the lower link 310 is disposed with respect to the notch-shaped avoiding portion 48 a of the cam surface 48 of the cam plate 41. At this time, when the slide / rotation operation lever 362 is released, the slide lock member 203 is locked. As a result, the slide and rotation of the seat body 1 together with the turntable 50 and the seat holder 70 are restrained. Here, the posture of the seated person sitting on the seat body 1 is changed to a posture that makes it easy to get off. Thereafter, the slide lock member 203 is unlocked again by the slide / rotation operation lever 362, and then the sheet main body 1 is rotated to the rotation end position rotated nearly 90 degrees from the rotation initial position.

  As shown in FIGS. 21 and 24, while the seat body 1 rotates from the initial rotation position to just before the rotation end position facing the vehicle outer side, as shown in FIGS. The lock portion 94 of the tilt lock body 93 is fitted and held in the tilt prevention groove 112 of the locking member 111 by the urging force of the spring 98, and the tilt prevention interlock mechanism 90 performs the tilt operation of the seat body 1. Tilt lock is disabled. For this reason, the seat body 1 is not tilted unexpectedly while the seat body 1 rotates from the initial rotation position to just before the rotational end position facing the vehicle exterior.

  As shown in FIG. 27, when the seat body 1 is rotated to the rotation end position facing the vehicle outer side, the tilt lock release operating body 121 acts on the tilt lock release body 95 of the tilt prevention interlock mechanism 90. Then, the tilt lock releasing body 95 is rotated in the clockwise direction toward the FIG. 28 together with the support shaft 92 against the urging force of the spring 98. As the tilt lock body 93 rotates together with the support shaft 92, the lock portion 94 of the tilt lock body 93 comes out of the tilt prevention groove 112 of the locking member 111. That is, the tilt prevention interlock mechanism 90 releases the tilt lock, and the seat body 1 can be tilted.

  Here, when the caregiver gets off the seated person (caregiver) sitting on the seat main body 1, when the seat main body 1 is tilted to the tilt end position, the caregiver first takes the seat back 3. In the state where the grip member 5 is gripped, the front end of the operation knob 405 of the tilt operation lever 403 as a tilt operation member disposed in the vicinity of the grip member 5 is pushed. Then, the tilt operation lever 403 is operated in the unlocking direction around the lever shaft 402, and the tilt lock member 244 is unlocked via the tilt cable 410 (see FIG. 7).

  Subsequently, the seat main body 1 is lifted by manual operation together with the sheet holder 70 with respect to the turntable 50 as the tilt base member while the caregiver is gripping the grip member 5 of the seat back 3, thereby the tilt mechanism. The 80 tilt links 82 rotate upward about one connecting shaft 84. As a result, the seat body 1 is tilted down with the tilt shaft 81 as a fulcrum together with the seat holder 70 with respect to the turntable 50, and the seat cushion 2 of the seat body 1 tilts downward with the front side being low and the rear side being high ( (See the two-dot chain line in FIG. 7). At this time, in order to alleviate the impact of tilt-down, an elastic body 78 such as rubber or soft resin is disposed on at least one of the opposed surfaces of the turntable 50 and the seat holder 70 on the front side. It is preferable to keep it.

  In addition, as shown in FIG. 30, in the state where the seat body 1 is rotated to the rotation end position facing the outside of the vehicle, the seat holder 70 (the seat body 1) is tilted down. When 113 is displaced upward, the rotation unlocking body 105 is rotated together with the support shaft 102 in the clockwise direction toward FIG. 32 by the biasing force of the spring 108. As a result, the lock portion 104 of the rotation lock body 103 is in a rotation lock state in which it can engage with the rotation prevention piece 124 of the rotation prevention body 122 of the rotation end bracket 120. For this reason, the sheet main body 1 is not rotated unexpectedly after the tilt operation (tilt down operation) is performed until the seat main body 1 is set to the tilt end position or in the middle of the tilt.

  In the first embodiment, a cam mechanism 40 that rotates the turntable 50 in conjunction with the sliding operation of the slide table 20 is disposed between the base member 10 and the rotation mechanism 60. The cam mechanism 40 protrudes from the cam hole 42 formed in the cam plate 41 extending between the front frame portion 12 and the rear frame portion 13 of the base member 10 and the lower surface of the inner ring 62 of the rotation mechanism 60. And a roller 47 as a cam follower that is rotatably arranged around the axis of the supporting shaft 46. Then, the roller 47 is moved and guided along the cam hole 42 in conjunction with the sliding operation of the slide table 20, whereby the inner ring 62 rotates with respect to the outer ring 61 of the rotation mechanism 60, thereby making the turntable 50 desired. It can be rotated by the angle you want. Therefore, the trajectory of the seat holder 70 and the seat body 1 to the outside of the vehicle together with the turntable 50 can be arbitrarily set according to the shape of the cam hole 42. As a result, it is possible to reduce the area of the swinging locus of the seat holder 70 and the seat body 1 to the outside of the vehicle together with the turntable 50, and it is easy to secure the foot space.

  Further, by setting the shape of the cam hole 42 by a combination of a straight hole portion 43 parallel to the front-rear direction and a curved hole portion 44 that curves from the front end of the straight hole portion 43 toward the outside of the vehicle, The seat holder 70 and the seat body 1 can be interlocked by a combination of a linear slide in the vehicle and a rotary slide to the outside of the vehicle.

  Further, in the first embodiment, a damper 85 that relaxes (suppresses) the operation speed during the tilt operation is provided on the axis of one connecting shaft 84 of the tilt link 82 of the tilt mechanism 80. When the sheet main body 1 is tilted with the tilt shaft 81 as a fulcrum together with the sheet holder 70, the operation speed (especially when tilted down) is efficiently reduced by the damper 85. That is, compared to the case where the damper 85 is disposed on the axis of the tilt shaft 81, the input torque to the damper 85 can be suppressed to be smaller than the torque around the tilt shaft 81 by the lever ratio. For this reason, even if a small damper 85 with a small capacity is used, the operation speed during the tilt operation can be moderated satisfactorily. Further, by using the small damper 85, the damper 85 can be easily arranged in a limited space between the turntable 50 and the seat holder 70. Furthermore, it becomes easy to reduce the thickness of the slide rotating seat and to secure a foot space for the rear seat.

  In the first embodiment, between the turntable 50 as the tilt base member and the sheet holder 70, the sheet holder 70 is directed from the tilt end position (tilt down position) to the initial tilt position (tilt up position). A tilt auxiliary spring 88 that is pulled in (biased) is disposed. Therefore, when the seat body 1 is tilted together with the seat holder 70 from the tilt end position (tilt down position) toward the initial tilt position (tilt up position), the amount corresponding to the retracting force of the auxiliary tilt spring 88 is obtained. Since the tilt operation force is assisted, the seat body 1 can be lightly tilted.

  In the first embodiment, the slide / rotation operation lever 362 also serves as a rotation operation member and a slide operation member. In other words, the rotation operation member and the slide operation member are configured by a common slide / rotation operation lever 362. When the slide / rotation operation lever 362 is operated in the unlocking direction, the operation force is transmitted to the separate link 324 via the second slide cable 340, and the upper link 306, the link hinge shaft 303 and the lower link 310 are transmitted. Thus, the link rod 320 is interlocked, and the slide lock member 203 is unlocked. At the same time, the operating force is transmitted to the rotation lock member 222 via the rotation cable 370, and the rotation lock member 222 is unlocked. For this reason, it is not necessary to separately perform slide lock release and rotation lock release by separate operation members.

  In the first embodiment, when the caregiver gets off the seated person (caregiver) sitting on the seat body 1, the seat body 1 is tilted from the tilt initial position to the tilt end position. In a state where the grip member 5 of the seat back 3 is gripped, the tilt operation lever 403 disposed in the grip member 5 or in the vicinity thereof is unlocked, and then the tilt base is held while the grip member 5 is gripped. By tilting the sheet body 1 together with the sheet holder 70 with respect to the turntable 50 as a member, the sheet body 1 can be easily tilted to the tilt end position.

  Further, in the first embodiment, as shown in FIG. 2, an inner buckle 132 of a seat belt is attached to the buckle bracket 130 fixed to the upper surface of the extension 23 at the passenger compartment side end of the slide table 20. The lower end portion 132a is connected so as to be switchable between a lying position that is tilted forward and a standing position that is raised backward from the lying position. A spring 133 is disposed between the buckle bracket 130 and the inner buckle 132 as urging means for urging the inner buckle 132 toward the lying down position. Therefore, as shown in FIG. 33, when the sheet holder 70 and the sheet main body 1 are slid and rotated together with the turntable 50 with respect to the slide table 20, the sheet holder 70 and the sheet main body 1 come into contact with the inner buckle 132. It can be avoided.

  That is, as shown by the two-dot chain line in FIG. 33, when the inner buckle 132 is in the upright position, the sheet holder 70 and the sheet body 1 slide and rotate together with the turntable 50 with respect to the slide table 20. Sometimes, it is assumed that the sheet holder 70 and the sheet body 1 come into contact with the inner buckle 132 and become an obstacle to sheet rotation, but such a problem does not occur.

  In addition, this invention is not limited to the said Example 1, In the range which does not deviate from the summary of this invention, it can implement with a various form. For example, in the first embodiment, the case where the outer ring 61 of the rotation mechanism 60 is disposed on the slide table 20 and the inner ring 62 is disposed on the turntable 50 is illustrated, but the inner ring 62 is disposed on the slide table 20. Even if the outer ring 61 is disposed on the turntable 50, the present invention can be implemented. However, in this case, a cam follower that is guided to move along the cam hole 42 of the cam mechanism 40 may be disposed on the outer ring 61 that is a rotating wheel. Further, the case where the slide table 20 is slidably disposed on the base member 10 via the slide rail mechanism 30 and the turntable 50 is disposed on the slide table 20 via the rotation mechanism 60 is illustrated. The present invention can be implemented even in the case of a tilt sheet having a structure without the slide rail mechanism 30, the slide table 20, the rotation mechanism 60, the turntable 50, and the like. In this case, the sheet holder is disposed on the tilt base member via the tilt mechanism.

DESCRIPTION OF SYMBOLS 1 Seat main body 2 Seat cushion 3 Seat back 5 Grip member 50 Turntable (tilt base member)
70 Sheet Holder 80 Tilt Mechanism 81 Tilt Shaft 82 Tilt Link 85 Damper 244 Tilt Lock Member 403 Tilt Operation Lever (Tilt Operation Member)
410 Tilt cable

Claims (3)

A tilt base member that rotates when the rotation mechanism operates, a seat holder that is tiltable with respect to the tilt base member by the tilt mechanism, and a seat cushion and a seat back that are disposed on the seat holder. A tilt sheet including a seat body,
The tilt mechanism includes a tilt shaft that connects the seat holder to a front side portion of the tilt base member so as to be tiltable, and
A tilt link having both ends connected by connecting shafts across a portion closer to the rear side in the front-rear direction of the tilt base member and a portion closer to the rear side in the front-rear direction of the seat holder,
Between the tilt base member and the sheet holder, a tilt lock mechanism having a tilt lock member for releasably locking the sheet holder at a tilt initial position is disposed,
Wherein the seat back, the grip member is disposed, the gripping member or in the vicinity thereof, and said tilt lock member is unlocked operable tilting operation member is disposed through the tilt cables ,
Tilt prevention interlock that disables the tilting operation of the tilt mechanism while the seat body supported by the tilt base member by the operation of the rotating mechanism rotates from the initial rotation position to just before the rotation end position facing the vehicle exterior. A tilt sheet provided with a mechanism . The tilt sheet according to claim 1,
A tilt sheet, characterized in that a damper is provided on the connecting shaft at one end of the tilt link to reduce the operation speed during the tilt operation. The tilt sheet according to claim 1 or 2,
A tilting seat spring is provided between the tilt base member and the seat holder, wherein a tilting auxiliary spring for pulling the seat holder from a tilt end position toward a tilt initial position is disposed.

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