JP2019137287A - Vehicle seat - Google Patents

Abstract

To switch slide resistance of an upper rail fixed to a seat cushion to a lower rail with easy operation.SOLUTION: A seat 200 includes a slide lock mechanism 13 which locks an upper rail of the seat and a handle 212. The handle 212 is moved from a lock position to a first unlock position to release the slide lock mechanism 13 and sets slide resistance to forward movement of the upper rail 2 to first slide resistance. The handle 212 is moved from the first unlock position to a second unlock position to set the slide resistance to low slide resistance smaller than the first slide resistance while maintaining a release state of the slide lock mechanism 13.SELECTED DRAWING: Figure 6

Description

  The technology disclosed in this specification relates to a vehicle seat.

  2. Description of the Related Art A seat slide device that slides a seat in the front-rear direction with respect to a vehicle floor is known. The seat slide device includes a lower rail fixed to the floor of the vehicle and an upper rail fixed to the seat cushion and slidably engaged with the lower rail in the front-rear direction. In the seat slide device of Patent Document 1, the sliding resistance of the upper rail when the upper rail is unlocked and the seat is moved forward is made larger than the sliding resistance when the seat is moved backward. The seat slide device provides an appropriate sliding resistance when moving forward, while giving a small sliding resistance when moving backward, improving safety during forward movement and realizing easy backward movement.

International Publication No. 2016/009495

  In the seat slide device of Patent Document 1, the sliding resistance when the seat moves forward is set to an appropriate value for the safety of the passenger. On the other hand, when the passenger is not sitting, it is preferable that the seat can be moved forward with a lighter force. In addition, it is preferable that a case where an appropriate sliding resistance is given together with the unlocking of the upper rail and a case where a small sliding resistance is given together with the unlocking of the upper rail are divided by a simple operation.

  The vehicle seat disclosed in this specification includes a seat cushion, a lower rail, an upper rail, a slide lock mechanism, and a handle for releasing the slide lock mechanism. When the handle is moved from the locked position to the first unlocked position, the slide lock mechanism is released and the first sliding resistance is set as the sliding resistance for the forward movement of the upper rail. When the handle is moved from the first unlocked position to the second unlocked position, a low sliding resistance smaller than the first sliding resistance is set as the sliding resistance. By selecting the moving position of the steering wheel, the vehicle seat can be selected between a case where an appropriate sliding resistance is given together with unlocking and a case where a small sliding resistance is given together with unlocking.

  In the seat disclosed in the present specification, a second sliding resistance smaller than the first sliding resistance may be set as the sliding resistance of the rearward movement of the upper rail at the first unlock position. An appropriate value can be set for the first sliding resistance, and safety can be improved during forward movement, while the rearward movement of the seat can be facilitated.

  The seat disclosed in the present specification may further include a seat back that is rotatably supported with respect to the seat cushion, and a seat lock mechanism that locks the seat cushion and the seat back in a seatable posture. In this case, when the handle is moved from the lock position to the first unlock position, the slide lock mechanism is released while the seat lock mechanism is held in the locked state, and the handle is moved from the first unlock position to the second unlock position. In this case, it is preferable that the seat lock mechanism is released while the release of the slide lock mechanism is held. In the second unlock position, a low sliding resistance is set for forward movement, and the seat back can be folded. This configuration is suitable for the second seat of a three-row seat vehicle.

  An example of a mechanism for setting the first sliding resistance and the low sliding resistance in accordance with the handle operation is as follows. The mechanism includes a first wedge member, a second wedge member, a first interlocking mechanism, and a second interlocking mechanism. The first wedge member is held by the upper rail, is tapered toward the front of the vehicle, and is sandwiched between the lower rail and the upper rail. The second wedge member is held by the upper rail, is tapered toward the rear of the vehicle, and is sandwiched between the lower rail and the upper rail. The first interlocking mechanism moves the first wedge member rearward of the vehicle when the handle is moved from the locked position to the first unlocked position. If it does so, a 1st wedge member will leave | separate from a lower rail and sliding resistance will become small. The second interlocking mechanism moves the second wedge member forward of the vehicle when the handle is moved from the first unlock position to the second unlock position. If it does so, a 2nd wedge member will leave | separate from a lower rail and sliding resistance will become small. The first sliding resistance and the second sliding resistance described above are realized in a state where the first wedge member is separated from the lower rail and the second wedge member is in contact with the lower rail. When the first wedge member and the second wedge member are both separated from the lower rail, the low sliding resistance described above is realized.

  The above-described seat can be switched between the first sliding resistance and the low sliding resistance at the movement position of one handle. The seat disclosed in this specification may have two handles. That is, a seat disclosed in the present specification includes a first handle that releases the slide lock mechanism and sets the first sliding resistance to the sliding resistance when the upper rail moves forward, and the slide lock, instead of the handle described above. You may provide the 2nd handle which cancels | releases a mechanism and sets to sliding resistance low sliding resistance smaller than said 1st resistance value. The user can select either the first sliding resistance state or the low resistance state by selecting the handle to be operated.

  The first handle is configured to release the slide lock mechanism and set a second sliding resistance that is smaller than the first sliding resistance and lower than or equal to the low sliding resistance to the sliding resistance when the upper rail moves backward. It may be. Alternatively, the second handle may be configured to release the slide lock mechanism and the seat lock mechanism.

  Details and further improvements of the technology disclosed in this specification will be described in the following “DETAILED DESCRIPTION”.

It is the side view and top view which show the internal structure of the seat slide apparatus in the sheet | seat of 1st Example. It is sectional drawing which followed the II-II line | wire of Fig.1 (a). It is a figure which shows the mechanism of a sheet | seat (1). It is a figure which shows the mechanism of a sheet | seat (2). 5A is a cross-sectional view taken along line VV in FIG. 3, and FIG. 5B is a cross-sectional view taken along line VV in FIG. It is a figure which shows the mechanism of a sheet | seat (3). It is a figure explaining the interlocking mechanism of a handle and an unlock lever (1). It is a figure explaining the interlocking mechanism of a handle and an unlock lever (2). It is a figure explaining the interlocking mechanism of a handle and an unlock lever (3). It is a figure explaining the interlocking mechanism of a modification (1). It is a figure explaining the interlocking mechanism of a modification (2). It is a figure explaining the interlocking mechanism of a modification (3). It is a figure explaining the interlocking mechanism of the handle | steering-wheel and unlocking lever in 2nd Example. It is a figure which shows schematically the internal structure of the seat slide apparatus of a 1st modification. It is a figure which shows roughly the part structure of the seat slide apparatus of a 2nd modification. It is a figure which shows schematically the internal structure of the seat slide apparatus of a 3rd modification. It is a figure which shows schematically the internal structure of the seat slide apparatus of a 3rd modification. It is a figure which shows schematically the internal structure of the seat slide apparatus of a 3rd modification. It is a figure which shows schematically the internal structure of the seat slide apparatus of a 4th modification. It is a perspective view which shows the shape of a 1st slider and a 2nd slider. It is an exploded view showing the structure of a first slider and a second slider. It is a perspective view which shows the shape of a 2nd slider. It is a figure for demonstrating operation | movement of a 1st slider and a 2nd slider. It is a figure for demonstrating operation | movement of a 1st slider and a 2nd slider. It is a figure which shows the shape of the 1st slider and 2nd slider of the seat slide apparatus which concerns on a 5th modification.

  (First Embodiment) The seat of the first embodiment will be described with reference to the drawings. First, a mechanism for differentiating the sliding resistance when sliding the seat forward and the sliding resistance when sliding the seat backward will be described.

  FIG. 1A is a side view schematically showing the structure of a seat slide device 100 that slides a seat in the front-rear direction, and FIG. 1B is a plan view thereof. The seat slide device 100 is a device that is provided between a vehicle floor and a seat (both not shown), and supports the seat in a state in which the seat is slidable in the front-rear direction. In the present embodiment, it is assumed that the pair of seat slide devices 100 is incorporated in a second row seat of a vehicle having, for example, three rows of seats, that is, a passenger car.

  In FIG. 1A and FIG. 1B, the x-axis is set with the direction from the rear side to the front side of the vehicle as the x direction. The y-axis is set with the direction from the right side to the left side of the vehicle as the y direction. Furthermore, the z-axis is set with the direction from the lower side to the upper side of the vehicle as the z direction. In the drawings subsequent to FIG. 1, the x axis, the y axis, and the z axis are set in the same manner. Accordingly, the longitudinal direction of the vehicle is the ± x direction, the width direction of the vehicle is the ± y direction, and the height direction of the vehicle is the ± z direction.

  The seat includes a seat cushion on which a user of the vehicle sits, a seat back that forms a backrest of the user, and a headrest that supports the user's head. The seat back can swing over a predetermined swing angle with respect to the seat cushion around a swing axis parallel to the y-axis. In general, for example, when the second row of seats is slid toward the front of the vehicle in order to secure an entrance to the third row of seats, the seat back is folded around the swing shaft with respect to the seat cushion. To establish a folding posture.

  The seat slide device 100 includes a lower rail 1 and an upper rail 2. The lower rail 1 is a member fixed to the floor of the vehicle. The upper rail 2 is a member fixed to the bottom surface of the vehicle seat. The two sets of the lower rail 1 and the upper rail 2 fixed to one seat are provided in parallel so as to be aligned along the left-right direction of the vehicle in a state where the longitudinal direction thereof is along the front-rear direction of the vehicle. The upper rail 2 is supported to be slidable along the x axis with respect to the lower rail 1.

  2A and 2B are enlarged cross-sectional views taken along the line II-II in FIG. FIG. 2A is a diagram showing a slide lock state described later, and FIG. 2B is a diagram showing a slide lock released state described later. This will be described below with reference to FIGS. 2 (a) and 2 (b). The lower rail 1 is formed by bending a single metal plate. The lower rail 1 includes a bottom plate portion 3, side plate portions 4 and 4 extending upward from both ends of the bottom plate portion 3, and an upper plate portion 5 extending inward from the upper ends of the side plate portions 4 and 4, respectively. 5 and mouth plate portions 6 and 6 extending downward from the inner end portions of the upper plate portions 5 and 5, respectively.

  As is apparent from FIGS. 2A and 2B, the bottom plate portion 3 faces the upper plate portions 5 and 5, and the side plate portions 4 and 4 face the mouth plate portions 6 and 6, respectively. Yes. The mouth plate portions 6 and 6 are arranged apart from each other. A gap is formed between the lower end of the mouth plate portions 6 and 6 and the bottom plate portion 3. For example, a plurality of rectangular openings 7 are formed in the mouth plate portion 6. As shown in FIG. 1A, the openings 7 are arranged in a line along the x-axis.

  Among the spaces formed inside the lower rail 1, a space surrounded by the bottom plate portion 3, the side plate portion 4, the upper plate portion 5 and the mouth plate portion 6 constitutes a housing space 8 for the upper rail 2. The accommodation space 8 is opened upward between the mouth plate portions 6 and 6. A part of the upper rail 2, that is, the lower side part is accommodated in the accommodation space 8, and a part of the upper rail 2, that is, the upper side part protrudes upward from a portion opened upward in the lower rail 1.

  The upper rail 2 includes a pair of metal plates 9 and 9 that are superposed on each other. The metal plate 9 is disposed in the accommodation space 8 and is opposed to the side plate portion 4 and the mouth plate portion 6 by bending from the side plate portion 10 and a pair of side plate portions 10 and 10 facing the mouth plate portion 6 of the lower rail 1. A pair of arm plate portions 11, 11. That is, the pair of arm plate portions 11, 11 are portions formed to bend from the lower side of the side plate portion 10 and extend vertically upward.

  Of the pair of side plate portions 10 and 10, the side plate portion 10 disposed on the y-direction side has a plurality of rectangular openings 10a, for example. Similarly, for example, a plurality of rectangular openings 11a are formed in the arm plate portion 11 disposed on the y-direction side of the pair of arm plate portions 11 and 11. The shape and arrangement interval of the openings 10a and 11a are equal to the shape and arrangement interval of the opening 7 described above.

  A roller 12 is rotatably supported on the arm plate portion 11. The roller 12 is disposed on the upper surface of the bottom plate portion 3 of the lower rail 1 and supports the upper rail 2 so as to be slidable in the direction along the x-axis (that is, the front-rear direction of the vehicle). As shown in FIGS. 1A and 1B, two rollers 12 and 12 are arranged in the x direction on the arm plate portion 11 on the y direction side. On the other hand, on the arm plate portion 11 on the -y direction side, one roller 12 is disposed at the center position in the x direction.

  The seat slide device 100 has a locked state (FIG. 2A) in which the movement of the upper rail 2 along the x axis is restricted, and an unlocked state in which the movement of the upper rail 2 along the x axis is allowed (FIG. 2 ( b)) and a slide lock mechanism 13 for switching between the two. The slide lock mechanism 13 includes a lock member 14. The lock member 14 is formed from a bent metal plate. The lock member 14 is attached via a bracket 15 to a pair of metal plates 9, 9 arranged on the y direction side. The bracket 15 rotatably supports the lock member 14 by a rotation shaft 16 parallel to the x axis.

  The lock member 14 has a claw portion 14a and an operation portion 14b. A plurality of claw portions 14 a are formed at the end of the lock member 14. Each claw part 14a is formed in a strip shape, and is arranged in a line along the x-axis. Moreover, the width | variety (dimension in x direction) of each nail | claw part 14a is a width | variety which can be penetrated to each of the opening 10a, the opening 7, and the opening 11a. Furthermore, the arrangement interval of the claw portions 14a is equal to the arrangement interval of the openings 10a and the like. As shown in FIG. 2A, the locked state is a state in which each claw portion 14a penetrates the opening 10a, the opening 7, and the opening 11a. Thereby, sliding movement of the upper rail 2 with respect to the lower rail 1 (that is, movement along the x axis) is restricted.

  The operation portion 14b is a portion of the lock member 14 that is formed at the end opposite to the claw portion 14a with the rotation shaft 16 in between. A push-down pin 51 of a slide unlock lever 50 that engages with the movement of a handle 212 (described later) operated by the user is engaged with the operation unit 14b. In FIG. 1B and FIG. 2, only the tip of the push-down pin 51 is shown. The entire slide unlock lever 50 will be described later. When the user pulls up the handle 212 from the locked state of FIG. 2A, the push-down pin 51 is lowered and pushes down the operation unit 14b. The lock member 14 rotates around the rotation shaft 16 and shifts to a state where the respective claw portions 14a are pulled out from the openings 10a, 7 and 11a, that is, the unlocked state of FIG. In the unlocked state, the restriction on the sliding movement of the upper rail 2 with respect to the lower rail 1 is released, and the upper rail 2 can move along the x-axis. That is, the slide lock mechanism 13 is released.

  As shown in FIGS. 1A and 1B, one end of a coil spring 18 is connected to the lock member 14 in the vicinity of the operation portion 14b. The other end of the coil spring 18 is connected to the vicinity of the end of the upper rail 2 on the z direction side. The operating portion 14b is biased toward the z direction by the elastic restoring force of the coil spring 18. For this reason, when the user is not operating the handle 212, the state in which each claw portion 14a penetrates the opening 10a, the opening 7, and the opening 11a, that is, the locked state in FIG. 2A is maintained.

  3 and 4 are diagrams schematically showing the internal structure of the seat slide device 100 for the seat 200. FIG. 3 and 4, the seat cushion 210 and the seat back 220 of the seat 200 are indicated by phantom lines. The upper rail 2 is fixed below the seat cushion 210. The seat cushion 210 and the seat back 220 are connected by a hinge 230 so as to be rotatable about the y-axis. A seat lock mechanism 231 that locks the seat cushion 210 and the seat back 220 in a seatable posture in which the user can sit is incorporated in the hinge 230. Since the seat lock mechanism 231 is a conventional technique, a detailed description of the mechanism is omitted. When the seat unlock lever 60 rotates clockwise, the seat lock mechanism 231 is released. When the seat lock mechanism 231 is released, the seat back 220 can rotate around the y-axis with respect to the seat cushion 210 using the hinge 230 as a rotation axis. If there is nothing obstructing the seat cushion 210, the seat back 220 is folded on the seat cushion 210.

  3 and 4 also illustrate the handle 212 and the slide unlock lever 50 described above. The slide unlock lever 50 and the seat unlock lever 60 are interlocked with the movement of the handle 212. The handle 212, the slide unlock lever 50, and the seat unlock lever 60 are connected by a cable, and the slide unlock lever 50 and the seat unlock lever 60 also move in conjunction with the movement of the handle 212. In FIGS. 3 and 4, illustration of a cable connecting the handle 212, the slide unlock lever 50, and the seat unlock lever 60 is omitted. The interlocking mechanism of the handle 212, the slide unlock lever 50, and the seat unlock lever 60 will be described later.

  Returning to the description of the seat slide device 100. 3 and 4, a part of the pair of metal plates 9, 9 disposed on the y direction side, and the y direction side of the lower rail 1 (side plate portion 4, upper plate portion). 5, a state in which part of the mouth plate 6) is cut out is shown. FIG. 3 shows a slide lock state, and FIG. 4 shows a slide lock release state.

  This will be described with reference to FIGS. The seat slide device 100 is provided with a first lever 20 and a second lever 21 at positions on both sides of the lock member 14 along the x-axis. The first lever 20 and the second lever 21 are substantially flat members, and are attached to the metal plates 9 and 9 via the rotation shaft 22 in a state where the normal direction is along the y-axis. The rotation axis 22 is an axis parallel to the y axis. The first lever 20 and the second lever 21 are respectively attached to the metal plates 9 and 9 so as to be rotatable around the rotation shaft 22. As shown in FIG. 2, the first lever 20 and the second lever 21 are accommodated between a pair of metal plates 9 and 9.

  The first lever 20 provided on the x direction side with respect to the lock member 14 rotates in an opposite direction to the upper arm portion 20a across the rotation shaft 22 and an upper arm portion 20a extending generally upward from the rotation shaft 22. And a lower arm portion 20b extending generally downward from the shaft 22. The upper arm portion 20 a is integrally formed with a transmission portion 20 c that protrudes from the upper arm portion 20 a toward the upper side of the lock member 14. As apparent from FIGS. 3 and 4, the transmission portion 20 c is engaged with the lock member 14, and the swing of the lock member 14 around the rotation shaft 16 is transmitted as the swing of the first lever 20 around the rotation shaft 22. It has a function to do.

  The second lever 21 provided on the −x direction side of the lock member 14 includes an upper arm portion 21a extending generally upward from the rotation shaft 22 and a lower arm extending generally downward from the rotation shaft 22. Part 21b. The distal end of the upper arm portion 20 a of the first lever 20 and the distal end of the upper arm portion 21 a of the second lever 21 are connected to each other by a coil spring 23. The upper arm portion 20a and the upper arm portion 21a are urged in a direction approaching each other by the elastic restoring force of the coil spring 23. As a result, the transmission portion 20 c of the first lever 20 is always urged toward the lock member 14 around the rotation shaft 22.

  As apparent from FIG. 3, the upper arm portion 21 a of the second lever 21 is not formed to correspond to the transmission portion 20 c of the first lever 20. The oscillation is not transmitted. Instead, the second lever 21 is formed with a transmission portion 21c extending from the rotation shaft 22 toward an upper direction different from the upper arm portion 21a. One end of a wire 24 is connected to the tip of the transmission portion 21c. The other end of the wire 24 is connected to the seat unlock lever 60. When the seat unlock lever 60 rotates clockwise, the second lever 21 also rotates in conjunction with the clockwise rotation.

  One end of a slider 26 is connected to each of the lower arm portion 20 b of the first lever 20 and the lower arm portion 21 b of the second lever 21 so as to be swingable around the support shaft 25. The slider 26 is a rod-like member that is arranged with its longitudinal direction approximately along the x-axis. The slider 26 connected to the first lever 20 extends in the + x direction from the lower end of the lower arm portion 20b, while the slider 26 connected to the second lever 21 extends from the lower end of the lower arm portion 21b in the −x direction. Extend to. A contact portion 27 is integrally formed at a position of each slider 26 that is the end portion on the side opposite to the support shaft 25. The slider 26 and the contact portion 27 are integrally formed from, for example, a resin material.

  When the operation portion 14b of the lock member 14 is pushed down to the −z direction side and the unlocked state is established, the lock member 14 comes into contact with the transmission portion 20c and the transmission portion 20c together with the lock member 14 as shown in FIG. Is lifted. Accordingly, the upper arm portion 20a of the first lever 20 moves in a direction away from the upper arm portion 21a of the second lever 21 while resisting the elastic restoring force of the coil spring 23. As a result, the first lever 20 swings around the rotating shaft 22 counterclockwise, whereby the slider 26 on the first lever 20 side moves toward the lock member 14 side (−x direction side). Become. Details of the subsequent operation will be described later.

  5A is an enlarged cross-sectional view taken along line VV in FIG. 3, and FIG. 5B is an enlarged cross-sectional view taken along line VV in FIG. Referring to FIGS. 5 (a) and 5 (b) together, the contact portion 27 is supported by the intermediate portion 27a and the intermediate portion 27a at the tip of the intermediate portion 27a so as to be in the y direction side and the −y direction side. And a pair of provided arm portions 27b and 27b. Each arm portion 27b is formed with a through-hole 28 having a rectangular cross section penetrating substantially along the x-axis. The guide portion 19 formed at the end of the arm plate portion 11 is inserted into the through hole 28.

  As is clear from FIGS. 3 and 4, the longitudinal direction of the guide portion 19 is inclined with respect to the x-axis so as to approach the upper plate portion 5 as it goes to the tip side. That is, the guide portion 19 of the slider 26 arranged on the x direction side is inclined so as to approach the upper plate portion 5 as it goes to the x direction side. Further, the guide portion 19 of the slider 26 arranged on the −x direction side is inclined so as to approach the upper plate portion 5 as it goes to the −x direction side.

  Since the guide portion 19 is inclined as described above, an end surface on the z direction side of the guide portion 19 forms an inclined surface 19 a formed on a part of the upper rail 2. The inclined surface 19a is a surface that is inclined with respect to the horizontal plane so that the inclined surface 19a moves toward the z-direction side as the distance from the lock member 14 increases. The inner wall surface of the through hole 28 is substantially parallel to the surface of the guide portion 19 that faces the through hole 28. For this reason, the inner wall surface of the through hole 28 on the z-direction side, that is, the top surface forms an inclined surface in the same manner as the inclined surface 19a. The same applies to the inner wall surface (that is, the bottom surface) of the through hole 28 on the −z direction side.

  Next, the operation of the seat 200 including the seat slide device 100 will be described. First, it is assumed that the handle 212 is in the locked position (the position of the handle 212 in FIG. 3). At this time, the seat lock mechanism 231 is in a locked state, and the seat back 220 and the seat cushion 210 are locked in a seatable posture. A lock state is established in the slide lock mechanism 13 of the seat slide device 100. The user may be seated on the seat or may not be seated on the seat. In the locked state, as shown in FIG. 2 (a), the respective claw portions 14a pass through the opening 10a, the opening 7, and the opening 11a, and the sliding movement of the upper rail 2 with respect to the lower rail 1 is restricted.

  At this time, as shown in FIG. 3, the upper arm portion 20a of the first lever 20 and the upper arm portion 21a of the second lever 21 are urged toward each other along the x-axis by the elastic restoring force of the coil spring 23. . The seat has a normal posture, and the seat operating lever (handle 212) for establishing the unlocked state of the seat back 220 is not operated. Accordingly, no force is applied from the wire 24 to the transmission portion 21c.

  As shown in FIG. 3, the upper arm portion 20 a and the upper arm portion 21 a are biased in the direction of approaching each other along the x axis by the elastic restoring force of the coil spring 23. Thereby, the sliders 26 and 26 are pushed away from each other along the x-axis. Thus, as shown in FIG. 5A, the contact portion 27 of each slider 26 is sandwiched between the inclined surface 19a and the lower surface (contacted surface) of the upper plate portion 5 like a wedge. Is maintained at. As a result, a force along the z direction and a frictional force along the x direction act between the contact portion 27 and the upper plate portion 5. Thereby, rattling (relative displacement along the z-axis) between the lower rail 1 and the upper rail 2 is suppressed.

  3 and 4, only the wedge-shaped portion sandwiched between the inclined surface 19 a and the upper plate portion 5 in the contact portion 27 is schematically shown. The same applies to FIG. 6 described later. The wedge-shaped portion of the contact portion 27 on the front side of the vehicle is tapered toward the front of the vehicle. A wedge-shaped portion of the abutting portion 27 on the rear side of the vehicle is tapered toward the rear of the vehicle.

  Next, a case where the user moves the handle 212 to the first unlock position (the position indicated by the reference numeral 212a in FIG. 4) will be described. The first unlock position corresponds to a posture in which the handle 212 is rotated clockwise by an angle A1 from the lock position (position in FIG. 3). When the handle 212 moves from the locked position to the first unlocked position, the slide unlock lever 50 rotates counterclockwise with the movement of the handle 212 (position indicated by reference numeral 50a in FIG. 4). At this time, the seat unlock lever 60 does not move. The interlocking mechanism of the handle 212, the slide unlock lever 50, and the seat unlock lever 60 will be described later.

  When the slide unlock lever 50 rotates counterclockwise, the push-down pin 51 fixed to the slide unlock lever 50 is lowered downward to push down the operation portion 14b of the lock member 14. As described above with reference to FIG. 2, when the operation portion 14 b is pushed down, the claw portion 14 a of the lock member 14 is pulled out from the opening 10 a, the opening 7, and the opening 11 a, and the sliding movement of the upper rail 2 relative to the lower rail 1 is performed. The restriction is released (see FIG. 2B). Thus, sliding movement of the upper rail 2 along the x axis is allowed. That is, the slide lock mechanism is released.

  At this time, as shown in FIG. 4, the lock member 14 lifts the transmission portion 20c. Then, the upper arm portion 20 a of the first lever 20 moves in a direction away from the second lever 21 against the elastic restoring force of the coil spring 23. As a result, the first lever 20 swings around the rotating shaft 22 counterclockwise, whereby the slider 26 on the first lever 20 side moves toward the lock member 14 side (−x direction side). Become. As the slider 26 moves, the contact portion 27 arranged on the x direction side is separated from the lower surface of the upper plate portion 5. That is, the wedge-shaped portion of the contact portion 27 on the vehicle front side is separated from the lower rail 1. As a result, a gap is formed between the contact portion 27 and the lower surface of the upper plate portion 5 as shown in FIGS. The sliding resistance between the upper rail 2 and the lower rail 1 via the contact portion 27 on the vehicle front side is zero.

  On the other hand, the second lever 21 does not directly interlock with the lock member 14. However, the second lever 21 rotates around the rotation shaft 22 by the force from the coil spring 23. Specifically, as the upper arm portion 20a of the first lever 20 moves away from the second lever 21, the upper arm portion 21a of the second lever 21 rotates counterclockwise around the rotation shaft 22. The urging is performed toward the lock member 14 side. Since the seat unlock lever 60 is not moved, the seat is in a normal posture as described above, and no force is applied from the wire 24 to the transmission portion 21c.

  Thus, the upper arm portion 21a of the second lever 21 is urged toward the lock member 14 so as to rotate counterclockwise around the rotation shaft 22, so that the slider 26 on the second lever 21 side has the x-axis. Are pushed out toward the rear of the vehicle (to the −x direction side). Thus, as in the case where the locked state is established, the contact portion 27 of the slider 26 on the second lever 21 side is wedged between the inclined surface 19a and the lower surface (contacted surface) of the upper plate portion 5. It is maintained in the state of being sandwiched as shown in FIG. As a result, a force along the z direction and a frictional force along the x direction act between the contact portion 27 and the upper plate portion 5.

  In the state as described above, a scene in which the user slides the seat toward the front (first direction) of the vehicle, that is, a scene in which the upper rail 2 is moved toward the front of the vehicle with respect to the lower rail 1 is assumed. . As is clear from FIG. 4, the inclined surface 19 a of the guide portion 19 on the rear side of the vehicle is inclined so as to go to the z direction side toward the rear of the vehicle, so that the upper rail 2 (that is, the guide portion 19) is When moving toward the front of the vehicle, the contact portion 27 of the slider 26 on the rear side of the vehicle tends to further enter between the inclined surface 19a and the lower surface of the upper plate portion 5 by the frictional force described above. As a result, the aforementioned frictional force, that is, sliding resistance increases. At this time, since there is a gap between the contact portion 27 of the slider 26 on the front side of the vehicle and the lower surface of the upper plate portion 5, the sliding resistance is 0 (zero). In this case, the sliding resistance of the upper rail 2 (sliding resistance with respect to forward movement) is referred to as a first sliding resistance.

  On the other hand, a scene in which the user slides the seat toward the rear of the vehicle (second direction opposite to the first direction), that is, moves the upper rail 2 toward the rear of the vehicle with respect to the lower rail 1. Assume a scene. As is clear from FIG. 4, the inclined surface 19 a of the guide portion 19 on the rear side of the vehicle is inclined so as to be directed to the −z direction side toward the front of the vehicle. Therefore, when the upper rail 2 (that is, the guide portion 19) moves toward the rear of the vehicle, the contact portion 27 of the slider 26 on the rear side of the vehicle causes the inclined surface 19a and the lower surface of the upper plate portion 5 by the frictional force described above. Try to leave between. As a result, the aforementioned frictional force, that is, sliding resistance is reduced. At this time, since there is a gap between the contact portion 27 of the slider 26 on the front side of the vehicle and the lower surface of the upper plate portion 5, the sliding resistance is 0 (zero). In this case, the sliding resistance of the upper rail 2 (sliding resistance against backward movement) is referred to as a second sliding resistance. Here, since the sliding resistance of the abutting portion 27 on the rear side of the vehicle is reduced as compared to when sliding forward, the second sliding resistance is smaller than the first sliding resistance.

  According to the above, when the handle 212 is moved from the lock position (position of FIG. 3) to the first unlock position (position indicated by reference numeral 212a of FIG. 4), the slide lock mechanism 13 of the seat slide device 100 is released. At the same time, the sliding resistance is set to a moderate value (first sliding resistance) when the upper rail 2 is moved toward the front of the vehicle, while the sliding when the upper rail 2 is moved toward the rear of the vehicle. The dynamic resistance (second sliding resistance) is smaller than the first sliding resistance. In general, the seat slide device 100 is disposed so as to be slightly inclined forward and downward so as to approach the ground as it goes forward of the vehicle. Therefore, according to the seat slide device 100 of the present embodiment, the rapid movement of the seat can be suppressed when the seat moves forward, and the seated user can move the seat comfortably without feeling a fear. Can be made.

  Next, a case where the user moves the handle 212 to the second unlock position (the position indicated by reference numeral 212b in FIG. 6) will be described. The second unlock position corresponds to a posture in which the handle 212 is further rotated by an angle A2 clockwise from the first unlock position. When the handle 212 moves from the first unlock position to the second unlock position, the seat unlock lever 60 rotates clockwise with the movement of the handle 212 (position indicated by reference numeral 60a in FIG. 6). At this time, the seat unlock lever 60 further rotates counterclockwise, but the contact portion 27 of the slider 26 in front of the vehicle only moves in a direction further away from the upper plate portion 5, and therefore the movement of the slide lock mechanism 13. Has no effect here. That is, the released state of the slide lock mechanism 13 is maintained. The interlocking mechanism of the handle 212, the slide unlock lever 50, and the seat unlock lever 60 will be described later.

  As described above, when the seat unlock lever 60 rotates clockwise, the seat lock mechanism 231 is released, and the seat back 220 becomes rotatable.

  When the seat unlock lever 60 rotates clockwise, the wire 24 connected to the upper end of the seat unlock lever 60 is pulled toward the rear of the vehicle. As a result, the transmission portion 21 c of the second lever 21 is pulled in a direction away from the lock member 14 against the elastic restoring force of the coil spring 23. Thus, the second lever 21 swings around the rotation shaft 22 in the clockwise direction, and the slider 26 on the second lever 21 side moves toward the lock member 14 side. As a result, as shown in FIG. 6, a gap is formed between the contact portion 27 of the slider 26 on the second lever 21 side and the lower surface of the upper plate portion 5. That is, the wedge-shaped portion of the abutting portion 27 on the vehicle rear side is separated from the lower rail 1, and the sliding resistance between the upper rail 2 and the lower rail 1 via the abutting portion 27 on the vehicle rear side becomes zero.

  At this time, since the slide lock mechanism 13 is released, the contact portion 27 of the slider 26 on the first lever 20 side remains away from the upper plate portion 5. Since the contact portions 27 of the sliders 26 on the first lever 20 side and the second lever 21 side are both separated from the upper plate portion 5, the upper rail 2 can slide lightly in the front-rear direction with respect to the lower rail 1. The sliding resistance of the upper rail 2 at this time is referred to as low sliding resistance. The low sliding resistance is smaller than both the first sliding resistance and the second sliding resistance. The low sliding resistance is almost zero.

  According to the above, the frictional force between the front and rear abutment portions 27 of the vehicle and the lower surface of the upper plate portion 5 becomes substantially zero, so that the sliding resistance of the upper rail 2 with respect to the lower rail 1, specifically, Can set the low sliding resistance very small. As a result, the user can easily and comfortably move the seat 200 toward the front and rear of the vehicle with a light force. In addition, as described above, generally, the seat slide device 100 is disposed slightly inclined so as to approach the ground as it goes forward of the vehicle. For example, when the seat 200 is moved forward, the user moves the seat. It is also possible to move the seat 200 forward of the vehicle only by the weight of the seat without applying a force to the vehicle.

  The respective contact portions 27 arranged on the front side and the rear side of the vehicle are members that are held by the upper rail 2, and in order to increase sliding resistance, the lower rail 1 (upper plate portion 5) and the upper rail 2 ( It can be said that the member is sandwiched between the guide portion 19).

  The above-described sheet 200 has the following configuration. The seat 200 includes a seat cushion 210, a seat back 220, a seat lock mechanism 231, a lower rail 1, an upper rail 2, a slide lock mechanism 13, and a handle 212. The seat back 220 is supported by the hinge 230 so as to be rotatable with respect to the seat cushion 210. The seat lock mechanism 231 locks the seat cushion 210 and the seat back 220 in a seatable posture. The lower rail 1 is fixed to the floor of the vehicle. The upper rail 2 is fixed to the seat cushion 210 and is supported so as to be slidable in the vehicle front-rear direction with respect to the lower rail 1. The slide lock mechanism 13 locks the upper rail 2 with respect to the lower rail 1. The handle 212 is a member for releasing the seat lock mechanism 231 and the slide lock mechanism 13. When the handle 212 is moved from the locked position (the position indicated by reference numeral 212 in FIG. 3) to the first unlocked position (the position indicated by reference numeral 212a in FIG. 4), the slide lock mechanism 13 holds the seat lock mechanism 231 in the locked state. Canceled. At this time, the first sliding resistance is set as the sliding resistance for the forward movement of the upper rail 2. A second sliding resistance smaller than the first sliding resistance is set as the sliding resistance for the backward movement of the upper rail 2.

  When the handle 212 is moved from the first unlock position to the second unlock position (position 212b in FIG. 6), the seat lock mechanism 231 is released while the release of the slide lock mechanism 13 is maintained. At the same time, the sliding resistance of the upper rail 2 is set to a low sliding resistance that is smaller than the first and second sliding resistances.

  The seat 200 according to the embodiment can be slid forward with an appropriate sliding resistance value (first sliding resistance) and slid back and forth with a small sliding resistance value (low sliding resistance) with a single handle 212. The state can be switched. The former can safely slide the seat forward when the user is seated on the seat 200. In the latter case, the seat can be easily slid with a small force when, for example, the second row of seats is tilted and the third row is entered.

  The interlocking mechanism of the handle 212, the slide unlock lever 50, and the seat unlock lever 60 will be described with reference to FIGS. FIG. 7 shows a state when the handle 212 is in the locked position. The handle 212 is rotatably connected to the side surface of the seat cushion 210 around the rotation shaft 213. The handle 212 has a structure in which a main body 214 and a lever 215 operated by a user are connected in an L shape. One end of a connecting rod 55 is connected to the lever portion 215. The other end of the connecting rod 55 is connected to the upper end of the slide unlock lever 50. The lever portion 215 is provided with a long hole 216. One end of the wire 62 is engaged with the long hole 216. One end of the wire 62 is slidably engaged along the longitudinal direction of the long hole 216. The direction of the wire 62 is reversed via the pulley 63, and the other end is connected to the upper end of the seat unlock lever 60.

  The lower end of the slide unlock lever 50 is rotatably connected to the rotary shaft 52. A sub lever 54 extends from the middle of the slide unlock lever 50, and a push-down pin 51 is connected to the tip of the sub lever 54. The push-down pin 51 extends in the y-axis direction of the coordinate system in the drawing. As described above, the operation portion 14 b of the lock member 14 of the seat slide device 100 is in contact with the lower side of the push-down pin 51.

  The lower end of the seat unlock lever 60 is rotatably connected to the rotary shaft 61. The seat unlock lever 60 is connected to the seat lock mechanism 231. When the seat unlock lever 60 rotates clockwise, the seat lock mechanism 231 is released. Since the mechanism for releasing the seat lock by the operation of the lever employs a conventionally known mechanism, detailed description thereof will be omitted.

  FIG. 8 shows a state where the handle 212 is moved from the lock position (position of FIG. 7) to the first unlock position (position indicated by reference numeral 212a). It can move from the locked position to the first unlocked position by rotating the main body 214 of the handle 212 by an angle A1. When the handle 212 is moved to the first lock position, the lever portion 215 is rotated clockwise, and the connecting rod 55 is moved in the left direction (front of the vehicle). When the connecting rod 55 moves to the left, the slide unlock lever 50 connected to the tip of the connecting rod 55 rotates counterclockwise. When the slide unlock lever 50 rotates counterclockwise, the push-down pin 51 pushes down the operation portion 14b. As described above, when the operation portion 14b is pushed down, the slide lock mechanism 13 is released and the upper rail 2 can be slid. At this time, the sliding resistance of the upper rail 2 with respect to the lower rail 1 becomes the first sliding resistance with respect to the forward slide and becomes the second sliding resistance with respect to the backward slide.

  While the handle 212 rotates by an angle A1, one end of the wire 62 moves from the left end to the right end of the long hole 216 of the lever portion 215. One end of the wire 62 only moves in the long hole 216, and tension does not work. Since the wire 62 is not pulled, the seat lock mechanism 231 remains in the locked state of the seat back 220 even when the handle 212 is moved from the lock position to the first unlock position.

  FIG. 9 shows a state in which the handle 212 is further moved from the first unlock position to the second unlock position (position indicated by reference numeral 212b). The first unlock position can be moved to the second unlock position by further rotating the main body 214 of the handle 212 by an angle A2. When the handle 212 is moved to the second lock position, the lever portion 215 further rotates clockwise. The connecting rod 55 further moves leftward, but the state of the slide lock mechanism 13 remains unchanged as described above.

  When the lever portion 215 further rotates clockwise, the wire 62 locked to the right end of the long hole 216 is pulled in the left direction (the vehicle front side). The other end of the wire 62 is connected to the upper end of the seat unlock lever 60 via a pulley 63, and the seat unlock lever 60 rotates clockwise. As described above, when the seat unlock lever 60 rotates clockwise, the seat lock mechanism 231 is released, and the seat back 220 can rotate with respect to the seat cushion 210. A wire 24 is connected to the tip of the seat unlock lever 60, and when the wire 24 is pulled rightward, the sliding resistance of the upper rail 2 with respect to the lower rail 1 changes to a low sliding resistance. The low sliding resistance is smaller than the first sliding resistance and the second sliding resistance.

  As described above, when the handle 212 is moved from the locked position (the position indicated by reference numeral 212 in FIG. 7) to the first unlocked position (the position indicated by reference numeral 212a in FIG. 8), the seat lock mechanism 231 is held in the locked state. The slide lock mechanism 13 is released as it is. At this time, the sliding resistance with respect to the forward movement of the upper rail 2 is set to the first sliding resistance. When the handle 212 is moved from the first unlock position to the second unlock position (position 212b in FIG. 9), the seat lock mechanism 231 is released while the release of the slide lock mechanism 13 is held, and the upper rail 2 Is set to a low sliding resistance smaller than the first sliding resistance. As described above, the seat 200 according to the first embodiment gives an appropriate sliding resistance when the seat is moved forward with the operation of one handle 212 and the seat back is unlocked. It is possible to provide a small sliding resistance when the seat is moved forward in a state where the sheet is moved.

  (Modification) A modification of the seat of the first embodiment will be described. The sheet of the modification is different in the shapes of the first lever 20 and the second lever 21 of the first embodiment. With reference to FIGS. 11 to 13, the cooperative relationship between the first lever 120, the second lever 121, the lock member 114, and the handle 212 will be described. 11 to 13 show only a portion of the handle 212 that is held by the user. The handle 212 is the same as the handle 212 of the first embodiment. However, the wire 62 is not connected to the handle 212 of the modified example. The lock member 114 has the same structure as that of the lock member 14 of the first embodiment, but the shape is simplified in FIGS. 11 to 13.

  The first lever 120 and the second lever 121 are respectively attached to the metal plate 9 (not shown in FIGS. 11 to 12) via the rotary shaft 22 so as to be rotatable. The rotation axis 22 is an axis parallel to the y axis.

  The first lever 120 provided on the x direction side of the lock member 114 rotates in an opposite direction to the upper arm portion 120a across the rotation shaft 22 and an upper arm portion 120a extending generally upward from the rotation shaft 22. And a lower arm portion 120b extending generally downward from the shaft 22. The upper arm portion 120a is integrally formed with a transmission portion 120c that protrudes from the upper arm portion 120a toward the upper side of the lock member 114. The transmission portion 120 c has a function of engaging with the lock member 114 and transmitting the swing of the lock member 114 around the rotation shaft 16 (see FIG. 2) as the swing of the first lever 120 around the rotation shaft 22. Yes.

  The second lever 121 provided on the −x direction side of the lock member 114 includes an upper arm portion 121a extending generally upward from the rotation shaft 22 and a lower arm extending generally downward from the rotation shaft 22. Part 121b. The upper arm portion 121a is integrally formed with a transmission portion 121c protruding from the upper arm portion 121a toward the upper side of the lock member 114. The transmission portion 121 c has a function of engaging with the lock member 114 and transmitting the swing of the lock member 114 around the rotation shaft 16 as the swing of the second lever 121 around the rotation shaft 22. However, in the state of FIG. 11, a gap dH is secured between the lock member 114 and the tip of the transmission portion 121c. In addition, one end of a connecting rod 124 is connected to the upper arm 121 a of the second lever 121. The other end of the connecting rod 124 is connected to the seat unlock lever 60. When the second lever 121 rotates clockwise, the seat unlock lever 60 connected by the connecting rod 124 also rotates clockwise. When the seat unlock lever 60 rotates clockwise, the seat lock mechanism 231 is released, and the seat back can rotate with respect to the seat cushion.

  The distal end of the upper arm portion 120 a of the first lever 120 and the distal end of the upper arm portion 121 a of the second lever 121 are connected to each other by a coil spring 123. Due to the elastic restoring force of the coil spring 123, the upper arm portion 120a and the upper arm portion 121a are biased in a direction approaching each other. As a result, the transmission portion 120 c of the first lever 120 is always urged toward the lock member 114 around the rotation shaft 22. On the second lever 121 side, a stopper 129 for limiting the counterclockwise rotation range of the second lever 121 is provided. The stopper 129 is provided on the metal plate 9 (not shown). The tip of the upper arm 121a of the second lever 121 is urged leftward by the coil spring 123, but the counterclockwise rotation of the second lever 121 is caused by the stopper 129 and the tip of the transmission 121c and the lock member 114. Is limited at a position where the gap dH is secured.

  A slider 26 similar to that of the first embodiment is connected to the lower arm portion 120b of the first lever 120 and the lower arm portion 121b of the second lever 121. Since the movement of the first lever 120 and the second lever 121 and the movement of the slider 26 are the same as those in the first embodiment, illustration and description thereof are omitted.

  The interlocking relationship between the lock member 114 and the handle 212 is the same as in the first embodiment. That is, when the handle 212 is moved from the lock position to the first lock position (position 121a in FIG. 12), the push-down pin 51 of the slide unlock lever 50 (not shown) pushes down the operating portion of the lock member 114, and the lock member 114 rotates about a rotation axis parallel to the x-axis. The lock member 114 rotates, the slide lock mechanism 13 is released, and the seat can move in the front-rear direction.

  When the operation portion 14b of the lock member 114 is pushed down to the −z direction side and the unlocked state is established, the transmission portion 120c is lifted together with the lock member 114. Accordingly, the upper arm portion 120a of the first lever 120 moves in a direction away from the upper arm portion 121a of the second lever 121 while resisting the elastic restoring force of the coil spring 23. As a result, the first lever 120 rotates counterclockwise around the rotation shaft 22, whereby the slider 26 on the first lever 120 side moves toward the lock member 14 side (−x direction side). Become. At this time, as in the case of the first embodiment, a gap is formed between the contact portion 27 of the slider 26 on the first lever 120 side and the lower surface of the upper plate portion 5, and the sliding resistance is lowered. The sliding resistance at this time becomes the first sliding resistance for the forward movement and becomes the second sliding resistance for the backward movement.

  When the handle 212 moves from the locked position to the first unlocked position (the position indicated by reference numeral 212a in FIG. 11), the lock member 114 is lifted to the position indicated by reference numeral 114a in FIG. The lock member 114 is lifted by a distance dH from the initial position (position in FIG. 10). The initial gap between the tip of the transmission part 121c of the second lever 121 and the lock member 114 is also dH. Therefore, even if the handle 212 moves from the locked position to the first unlocked position, the second lever 121 does not move.

  When the handle 212 is moved from the first unlocked position to the second unlocked position (position indicated by reference numeral 212b in FIG. 12), the lock member 114 is further lifted and lifts the transmission portion 121c of the second lever 121. As a result, the second lever 121 swings clockwise around the rotation shaft 22, whereby the slider 26 on the second lever 121 side moves toward the lock member 114 side (x direction side). At this time, as in the case of the first embodiment, a gap is formed between the contact portion 27 of the slider 26 on the second lever 121 side and the lower surface of the upper plate portion 5, and the sliding resistance further decreases. The sliding resistance value at this time is a low sliding resistance.

  Further, when the second lever 121 rotates clockwise around the rotation shaft 22, the seat unlock lever 60 connected to the upper arm portion 121 a via the connecting rod 124 also rotates clockwise, and the seat lock mechanism 231 is moved. Canceled.

  The results of the cooperative operation of the handle 212, the first lever 120, and the second lever 121 of the modified example are summarized as follows. When the handle 212 is moved from the locked position to the first unlocked position, the slide lock mechanism 13 is released while the seat lock mechanism 231 is held, and the sliding resistance of the upper rail 2 with respect to the lower rail 1 is moved forward. On the other hand, the first sliding resistance is set, and the second sliding resistance is set for the backward movement. When the handle 212 is moved from the first unlock position to the second unlock position, the seat lock mechanism 231 is released while the release state of the slide lock mechanism 13 is maintained, and the sliding resistance of the upper rail 2 with respect to the lower rail 1 Is set to a low sliding resistance smaller than the first and second sliding resistances. Similarly to the case of the first embodiment, the seat of the modified example can be operated in a state where the seat can be slid with an appropriate sliding resistance with the operation of the handle 212 and in a state where the seat is unlocked. A state where the sheet can be slid with a light sliding resistance can be selected.

  (Second Embodiment) Next, the sheet 300 of the second embodiment will be described. FIG. 13 schematically shows a sheet 300 of the second embodiment. In FIG. 13, a part of the seat cushion 310 and a part of the seat back 320 are drawn with imaginary lines.

  Since the seat slide device for the seat 300 is the same as that of the seat 200 of the first embodiment, the description thereof is omitted. The seat 300 according to the second embodiment includes a first handle 312 and a second handle 322. The first handle 312 is attached to the side surface of the seat cushion 310 of the seat 300. The second handle 322 is attached to the side surface of the seat back 320.

  The first handle 312 is attached to the seat cushion 310 so as to be rotatable about a rotation shaft 313 parallel to the y-axis. The first handle 312 has an L shape, and the user operates one side of the L shape, and one end of a wire 315 is connected to the lever portion 314 which is the other side of the L shape. The other end of the wire 315 is connected to the slide unlock lever 50. When the user rotates the first handle 312 clockwise, the wire 315 is pulled to the left (front side of the vehicle), and the slide unlock lever 50 rotates counterclockwise about the rotation shaft 52. When the slide unlock lever 50 rotates counterclockwise, the push-down pin 51 extending in the y-axis direction from the tip of the sub lever 54 pushes down the operation portion 14b of the lock member 14 of the seat slide device 100. When the operation portion 14b is lowered, as described above, the slide lock mechanism 13 is released, and the sliding resistance of the upper rail 2 is changed to the first sliding resistance (when sliding forward) and the second sliding resistance ( (When sliding backward). Since the first handle 312 does not cooperate with the seat unlock lever 60, when the slide lock mechanism 13 is released by operating the first handle 312, the seat lock mechanism 231 keeps the seat back 320 locked.

  The second handle 322 is attached to the side surface of the seat back 320 so as to be rotatable about a rotation shaft 323 parallel to the y-axis. The second handle 322 has an L shape, and the user operates one side of the L shape. One end of the wire 325 and one end of the wire 327 are connected to the lever portion 324 on the other side of the L shape. ing.

  The direction of the wire 325 is changed via a pulley 326, and the other end is connected to the slide unlock lever 50. When the user rotates the second handle 322 counterclockwise, the slide unlock lever 50 is rotated counterclockwise about the rotation shaft 52 by the wire 325. Then, as in the case of the first handle 312, the slide lock mechanism 13 is released, and the sliding resistance of the upper rail 2 is changed to the first sliding resistance (when sliding forward) and the second sliding resistance (backward). (When sliding).

  The direction of the wire 327 is changed via pulleys 328 and 329, and the other end is connected to the seat unlock lever 60. When the user rotates the second handle 322 counterclockwise, the wire 327 causes the seat unlock lever 60 to rotate clockwise about the rotation shaft 61. Then, as in the case of the first embodiment, the seat lock mechanism 231 is released. One end of the wire 24 is connected to the seat unlock lever 60, and the other end of the wire 24 is connected to the second lever 21 as in the first embodiment (FIGS. 3, 4, 6). reference). When the wire 24 is pulled rightward (vehicle rear side), the sliding resistance of the upper rail 2 is set to a low sliding resistance that is smaller than the first and second sliding resistances.

  As described above, when the second handle 322 is operated, both the slide lock mechanism 13 and the seat lock mechanism 231 are released, and the sliding resistance of the movement of the seat 300 in the front-rear direction is set to a low sliding resistance. .

  The seat 300 according to the second embodiment provides an appropriate sliding resistance when the user moves the seat forward while keeping the seatable posture by selecting either the first handle 312 or the second handle 322. When the seat is moved forward with the seat back unlocked, it can be selected to give a small sliding resistance.

  A contact portion 27 at the tip of the slider 26 on the front side of the vehicle is held by the upper rail 2, and is tapered toward the front of the vehicle. The contact portion 27 on the vehicle front side is sandwiched between the lower rail 1 and the upper rail 2. The contact portion 27 on the vehicle rear side corresponds to the first wedge member. A contact portion 27 at the tip of the slider 26 on the rear side of the vehicle is held by the upper rail 2 and is tapered toward the rear of the vehicle. The abutting portion 27 on the vehicle rear side is sandwiched between the lower rail 1 and the upper rail 2. The contact portion 27 on the vehicle rear side corresponds to the second wedge member. The slider 26, the first lever 20, and the slide unlock lever 50 on the front side of the vehicle correspond to a first interlocking mechanism that moves the first wedge member to the rear of the vehicle when the handle 212 is moved from the lock position to the first unlock position. To do. When the wires 24, 62, the seat unlock lever 60, the second lever 21, and the slider 26 at the rear of the vehicle move the handle 212 from the first unlock position to the second unlock position, the second wedge member moves to the front of the vehicle. This corresponds to the second interlocking mechanism.

  Still another modification will be described. In the seat 200 of the first embodiment, the handle 212 and the seat unlock lever 60 are connected by the wire 62, and the seat unlock lever 60 and the second lever 21 are connected by the wire 24. The wire may be removed from the seat unlock lever 60 and the wire 62 may be directly connected to the wire 24. That is, the seat unlock lever 60 may be separated from the handle 212 in the seat 200 of the above-described embodiment. In such a structure, when the handle 212 is moved from the first unlock position 212a (FIG. 4) to the second unlock position 212b (FIG. 6), the seat lock mechanism 231 is not changed, and the sliding resistance of the upper rail 2 is changed. Are switched from the first and second sliding resistances to the low sliding resistances. A handle for releasing the seat lock mechanism 231 may be provided separately. In the seat having such a structure, the sliding resistance of the upper rail 2 (that is, the seat 200) can be switched from the first and second sliding resistances to the low sliding resistance by the moving position of the handle 212.

  Also in the seat 300 of the second embodiment, the wire 327 may be directly connected to the wire 24 by removing the seat unlock lever 60 from the wire 24. Then, when the second handle 322 is operated, the slide lock mechanism 13 is released and the sliding resistance of the upper rail 2 is set to a low sliding resistance.

  Hereinafter, modifications of the seat slide device will be described.

  FIG. 14 is a diagram schematically showing an internal structure of a seat slide device 100A according to the first modification. FIG. 14 shows a state in which the lock state is established in the lock mechanism 13. In the following, only differences from the seat slide apparatus 100 of the first embodiment will be described, and description of points that are common to the seat slide apparatus 100 will be omitted as appropriate.

  In the seat slide device 100A according to the first modified example, the incorporation of the first lever 20 in the first embodiment is omitted. That is, nothing is interlocked with the operation of the lock member 14. As is apparent from FIG. 14, one end of the coil spring 23 is locked in a locking hole 9 a formed in the metal plate 9. The other end of the coil spring 23 is connected to the upper arm portion 21 a of the second lever 21. Therefore, similarly to the above, the upper arm portion 21a is biased toward the lock member 14 so as to rotate counterclockwise around the rotation shaft 22 by the elastic restoring force of the coil spring 23. Accordingly, the abutting portion 27 of the slider 26 on the rear side of the vehicle is biased in the −x direction side, and is maintained in a state of being sandwiched between the inclined surface 19a and the lower surface of the upper plate portion 5 like a wedge. Has been.

  On the other hand, one end of the slider 26 on the front side of the vehicle is connected to one end of a coil spring 30 extending along the x axis, and the other end of the coil spring 30 is connected to a metal plate 9. It is locked to the stop hole 9b. The abutting portion 27 is integrally formed with the other end (end portion on the x direction side) of the slider 26. The slider 26 on the side is biased toward the −x direction by the elastic restoring force of the coil spring 30.

  In the first modification, the contact portion 27 on the front side of the vehicle and the inclined surface 19a of the guide portion 19 are configured in the same manner as the contact portion 27 on the rear side of the vehicle and the inclined surface 19a of the guide portion 19. That is, the inclined surface 19a of the guide portion 19 on the front side of the vehicle is inclined so as to be directed to the −z direction side toward the front of the vehicle. Accordingly, the abutting portion 27 of the slider 26 on the front side of the vehicle is biased to the −x direction side by the elastic restoring force of the coil spring 30, and the wedge is interposed between the inclined surface 19 a and the lower surface of the upper plate portion 5. It is maintained in the state of being sandwiched as shown in FIG. The abutting portion 27 on the front side has a tapered shape toward the rear of the vehicle, and is sandwiched between the upper rail 2 and the lower rail 1.

  Also with the seat slide device 100A configured as described above, the same operational effects as those of the seat slide device 100 of the first embodiment can be realized. That is, the slider 26 on the rear side of the vehicle is pushed out toward the rear of the vehicle by the elastic restoring force of the coil spring 23 regardless of the locked state and the unlocked state of the slide. Further, the state is maintained in a state of being sandwiched between the inclined surface 19a and the lower surface of the upper plate portion 5 like a wedge. Similarly, the slider 26 on the front side of the vehicle is pulled toward the rear of the vehicle by the elastic restoring force of the coil spring 30, so that the contact portion 27 of the slider 26 has the inclined surface 19 a and the lower surface of the upper plate portion 5. It is maintained in a state of being sandwiched like a wedge.

  Next, it is assumed that the unlocking state (release state) is established in the slide lock mechanism 13 when the occupant is seated. As already described, in the first modified example, the inclined surfaces 19a, 19a on both the front side and the rear side of the vehicle are inclined toward the z-direction side toward the rear of the vehicle. For this reason, when the seat, that is, the upper rail 2 tries to move toward the front of the vehicle, the contact portions 27, 27 on both the front side and the rear side of the vehicle are brought into contact with the inclined surface 19a by the frictional force received from the upper plate portion 5. An attempt is made to enter further between the lower surface of the upper plate portion 5. As a result, the frictional force that the upper rail 2 receives, that is, the sliding resistance (first sliding resistance) increases.

  On the other hand, in a scene where the occupant moves the upper rail 2 toward the rear of the vehicle relative to the lower rail 1, when the seat, that is, the upper rail 2 moves toward the rear of the vehicle, both the front side and the rear side of the vehicle The contact portions 27, 27 try to be separated from between the inclined surface 19 a and the lower surface of the upper plate portion 5 by the frictional force received from the upper plate portion 5. As a result, the aforementioned frictional force, that is, sliding resistance (second sliding resistance) is reduced.

  Similarly to the above, when the handle 212 moves to the second unlock position 212b (see FIG. 9), the wire 24 is pulled toward the rear of the vehicle in conjunction with the operation of the handle 212. As a result, the transmission portion 21 c of the second lever 21 is pulled in a direction away from the lock member 14 against the elastic restoring force of the coil spring 23. The second lever 21 swings around the rotation shaft 22 in the clockwise direction, and the slider 26 on the second lever 21 side moves toward the lock member 14 side.

  As a result, a gap is formed between the contact portion 27 of the slider 26 on the rear side of the vehicle and the lower surface of the upper plate portion 5. The sliding resistance between the abutting portion 27 on the rear side of the vehicle and the lower surface of the upper plate portion 5 becomes 0 regardless of the moving direction of the seat. On the other hand, the sliding resistance between the abutting portion 27 on the front side of the vehicle and the lower surface of the upper plate portion 5 becomes different depending on the moving direction, as in the case of the seating of the occupant described above. . That is, the sliding resistance when moving the seat forward is greater than the sliding resistance when moving the seat backward.

  As described above, in the first modification, only the sliding resistance between the abutting portion 27 on the rear side of the vehicle and the lower surface of the upper plate portion 5 is determined by moving the handle 212 from the first unlock position 212a to the second unlock position. It is changed when moved to the lock position 212b. Note that the seat unlock lever 60 may or may not be interlocked with the handle 212.

  Also in this modified example, the respective contact portions 27 arranged on the front side and the rear side of the vehicle are members that are held by the upper rail 2, and in order to increase sliding resistance, the lower rail 1 (upper plate portion) 5) and a member sandwiched between the upper rail 2 (guide portion 19). The contact portion 27 on the front side corresponds to the “first wedge member” in the present modification. Further, the contact portion 27 arranged at a position on the rear side of the first wedge member corresponds to the “second wedge member” in the present modification.

  The sliders 26 arranged on the front side and the rear side of the vehicle move the contact portion 27 in the same predetermined direction (specifically, the −x direction), and between the contact portion 27 and the lower rail 1. It can be said that the sliding friction is increased by increasing the working frictional force. The slider 26 arranged on the front side slides by moving the first wedge member in the −x direction and increasing the frictional force acting between the first wedge member and the lower rail (upper plate portion 5). This corresponds to the “first support member” for increasing the resistance. Further, the slider 26 arranged at a position on the rear side of the first support member moves the second wedge member in the −x direction, and the second wedge member and the lower rail (upper plate portion 5) are moved. This corresponds to the “second support member” for increasing the sliding resistance by increasing the frictional force acting between them.

  As shown in FIG. 15, the seat slide device 100A as described above may further include a connecting member 31 that connects the slider 26 on the front side of the vehicle and the slider 26 on the rear side of the vehicle (seat slide). Second modification of device). An end portion on the −x direction side of the connecting member 31 is rotatably connected to a lower end portion of the lower arm portion 21b together with the slider 26 on the rear side of the vehicle. Further, the end portion on the x direction side of the connecting member 31 is connected to the slider 26 on the front side of the vehicle.

  For this reason, when the wire 24 is pulled toward the rear of the vehicle in conjunction with the operation of the handle 212 (or the second handle 322), the slider 26 on the front side of the vehicle is moved forward of the vehicle by the connecting member 31. It is pushed out toward. As a result, a gap is formed between the contact portion 27 on the front side of the vehicle and the lower surface of the upper plate portion 5. As a result, the frictional force between the contact portion 27 and the lower surface of the upper plate portion 5 is also zero on the front side of the vehicle (similar to the rear side), so that the seat is moved toward the front of the vehicle. The sliding resistance of the upper rail 2 with respect to the lower rail 1 can be further reduced.

  FIG. 16 is a diagram schematically showing an internal structure of a seat slide device 100B according to a third modification of the present invention. FIG. 16 shows a state in which the lock state is established in the lock mechanism 13. In the following, only differences from the first embodiment will be described, and description of points common to the first embodiment will be omitted as appropriate.

  In the seat slide device 100B according to the third modification, the configuration of the second lever 21 in the seat slide device 100 of the first embodiment is changed. Specifically, a swing member 32 that is a rod-like member is coupled to the upper arm portion 21a of the second lever 21 so as to be swingable around a swing shaft 33 that is defined in parallel to the y axis. The swing member 32 includes the swing shaft 33, the straight portion 32b, and the shaft portion 32a. The straight portion 32b is a straight portion extending from the swing shaft 33 in a direction perpendicular to the y axis. The shaft portion 32a is a linear portion that extends from the end portion of the straight portion 32b opposite to the swing shaft 33 toward the paper surface depth direction (ie, the -y direction) in FIG. The shaft portion 32 a is disposed along the side surface on the lock member 14 side of the upper arm portion 21 a of the second lever 21.

  The swing shaft 33 in the present modification is a linear portion extending from the end portion of the straight portion 32b opposite to the shaft portion 32a in the depth direction of the paper in FIG. 16 (that is, the −y direction). Yes. The swing shaft 33 is inserted through a hole formed in the upper arm portion 21a, for example. The swing member 32 is supported by the second lever 21 so as to be rotatable around the swing shaft 33.

  The swing member 32 is associated with a transmission member 34 that is rotatably supported by the rotary shaft 22. Similarly to the transmission portion 20 c of the first lever 20, the transmission member 34 has a function of engaging with the lock member 14 and transmitting the swing of the lock member 14 as the swing of the second lever 21. On the upper side surface of the transmission member 34 in the + z direction, a protrusion 34a protruding in the + z direction is formed. A first region is defined on the side surface of the transmission member 34 on the proximal end side (that is, the rotation shaft 22 side) with the protrusion 34a as a boundary, and a second region is defined on the side surface on the distal end side of the transmission member 34. In FIG. 16, the shaft portion 32a of the swing member 32 is disposed in the first region.

  Further, the swing member 32 is associated with a cam member 35 that is rotatably supported by the rotary shaft 22. A cam surface 35 a is formed on the upper side surface of the cam member 35 in the + z direction. A shaft portion 32a of the swing member 32 is associated with the cam surface 35a. Accordingly, the position of the shaft portion 32 a of the swing member 32 can be changed from the first region to the second region of the transmission member 34 in accordance with the swing of the cam member 35 around the rotation shaft 22. The cam member 35 is integrated with a lever 36 extending upward. For example, when the occupant manually operates the lever 36, the cam member 35 can be swung.

  Next, the operation of the seat slide device 100B will be described. In a scene where the lock state is established in the slide lock mechanism 13, the upper arm portion 20 a of the first lever 20 and the upper arm portion 21 a of the second lever 21 are moved toward each other along the x axis by the elastic restoring force of the coil spring 23. It is energized. As a result, the sliders 26 and 26 are pushed away from each other along the x-axis. In this way, each contact portion 27 is sandwiched between the inclined surface 19 a and the lower surface (contacted surface) of the upper plate portion 5 like a wedge, and as a result, between the contact portion 27 and the upper plate portion 5. A force along the z direction and a frictional force along the x direction work.

  Next, when an unlocked state is established in the slide lock mechanism 13, the lock member 14 lifts the transmission portion 20c and the transmission member 34 as shown in FIG. The upper arm portion 20 a of the first lever 20 swings away from the second lever 21 against the elastic restoring force of the coil spring 23. On the other hand, since the shaft portion 32 a of the swing member 32 is locked to the protrusion 34 a of the transmission member 34 and remains in the first region, the protrusion 34 a of the transmission member 34 causes the second lever 21 to be elastically restored by the coil spring 23. It is rocked in the direction away from the first lever 20 against the force (that is, in the clockwise direction). As a result, both sliders 26 move so as to approach each other, so that the respective contact portions 27 are separated from the lower surface of the upper plate portion 5, and there is a gap between the contact portion 27 and the lower surface of the upper plate portion 5. It is formed. For this reason, both the sliding resistance when sliding the seat forward and the sliding resistance when sliding the seat backward become small. Such a state is set when the passenger is not seated on the seat.

  On the other hand, when the cam member 35 is swung clockwise in FIG. 17 by operating the lever 36 when the unlocked state is established, the cam surface 35a of the cam member 35 lifts the shaft portion 32a of the swing member 32. When the cam member 35 further swings clockwise, the shaft portion 32a of the swing member 32 is released from locking with the protrusion 34a. As a result, the upper arm portion 21 a of the second lever 21 swings toward the lock member 14 due to the elastic restoring force of the coil spring 23. Thereby, as shown in FIG. 18, the shaft portion 32 a of the swing member 32 moves from the first region to the second region of the transmission member 34.

  As a result, the slider 26 on the rear side of the vehicle is pushed out in the direction toward the rear of the vehicle. In this way, as a result of the rear contact portion 27 being sandwiched between the inclined surface 19a and the lower surface (contacted surface) of the upper plate portion 5 like a wedge, the contact portion 27 and the upper plate portion 5 In the meantime, a force along the z direction and a frictional force along the x direction act. Accordingly, as in the first embodiment, the sliding resistance (first sliding resistance) when the upper rail 2 is moved toward the front of the vehicle can be increased.

  The lever 36 in this modification corresponds to a part of an “adjustment mechanism” for adjusting the sliding resistance of the sliding of the upper rail 2 with respect to the lower rail 1. As described above, the adjustment mechanism is configured to change the sliding resistance based on the operation performed on the lever 36 by the user.

  In the first and second embodiments described above, a sensor for detecting the inclination of the seat slide devices 100 and 100A may be incorporated, and the sliding of the upper rail 2 according to the magnitude of the inclination detected by the sensor. The resistance may be adjusted dynamically. For example, when the sensor detects that the inclination of the seat slide devices 100 and 100A has increased when the occupant is seated, the electric actuator 21 swings the transmission portion 21c counterclockwise, and the slider 26 on the rear side of the vehicle. The abutment portion 27 may be further advanced between the inclined surface 19 a and the lower surface of the upper plate portion 5. Even with such a configuration, the sliding resistance of the upper rail 2 can be appropriately increased.

  Further, for example, when the inclination of the seat slide device 100, 100A becomes too larger than a predetermined threshold when the occupant is not seated, control may be performed to increase the sliding resistance of the upper rail 2. For this purpose, for example, the amount by which the wire 24 is pulled by an electric actuator or the like is reduced, and the contact portion 27 is like a wedge between the inclined surface 19a and the lower surface (contacted surface) of the upper plate portion 5. It is assumed that they will be sandwiched.

  The other end of the wire 24 is connected to a handle (the handle 212 or the second handle 322) that can be operated by the occupant, and the occupant not seated on the seat pulls the wire 24 by operating the handle, that is, the upper rail. The sliding resistance of 2 may be configured to be dynamically adjustable. As described above, in this case, the seat lock mechanism 231 is in the locked state, the seat back and the seat cushion are not folded with respect to each other, and the seat has established a normal posture. In addition, it is possible to realize dynamic adjustment of the sliding resistance when seated and when not seated by the operation of the occupant. In the first embodiment, the other end of the wire 24 is connected to the seat unlock lever 60, and the seat unlock lever 60 is further connected to the handle 212 by the wire 62. With such a structure, when the handle 212 is moved from the first unlock position to the second unlock position, the seat lock mechanism 231 is released while the release of the slide lock mechanism 13 is held. In the second embodiment, the other end of the wire 24 is connected to the seat unlock lever 60, and the seat unlock lever 60 is further connected to the second handle 322 by a wire 327. With such a structure, when the second handle 322 is operated, the slide lock mechanism is released and the seat lock mechanism 231 is released.

  For example, the seat slide device 100B according to the third modification may incorporate a sensor that detects the sinking of the seat when an occupant is seated on the seat. In this modification, the lever portion 36 is operated by an electric actuator or the like according to the seating of the occupant detected by the sensor, so that the shaft portion 32a of the swing member 32 is moved from the first region of the transmission member 34 to the second region. The first sliding resistance may be set in the seat slide device 100B. Thus, in the seat slide device 100B, the seating time and the non-sitting time may be automatically switched.

  By the way, in the modified example of the seat slide device 100A of the second modified example described with reference to FIG. 15, the rotation of the second lever 21 causes the front and rear contact portions 27 to move away from each other. At this time, if the timing at which the front-side contact portion 27 is pressed against the upper plate portion 5 and the timing at which the rear-side contact portion 27 is pressed against the upper plate portion 5 are the same, when the seat is slid The sliding resistance can be changed to the designed size.

  However, for example, when the timings described above are different from each other due to dimensional errors of parts, each of the contact portions 27 is in a stage where one of the contact portions 27 is first pressed against the upper plate portion 5. However, it cannot be displaced any more. That is, only one contact portion 27 is pressed against the upper plate portion 5, while the other contact portion 27 is not pressed against the upper plate portion 5. In such a state, the sliding resistance when the sheet is slid becomes smaller than the design value.

  As a configuration example for solving this, a seat slide device 100C according to a fourth modification of the present invention will be described. FIG. 19 is a diagram schematically showing an internal structure of a seat slide device 100C according to the fourth modification. Hereinafter, differences from the modified example of the seat slide device 100A illustrated in FIG. 15 will be mainly described, and description of points that are common to the modified example will be appropriately omitted.

  In FIG. 19, reference numeral 5 a is attached to the lower surface of the upper plate portion 5. Hereinafter, this lower surface is referred to as a “lower surface 5a”. In FIG. 12, the outer shapes of the lock member 14 and the roller 12 are indicated by dotted lines in order to avoid the illustration from being complicated.

  Also in this embodiment, an inclined surface 19 a is formed on the upper surface of each guide portion 19, as in the modification shown in FIG. 15. Specifically, the inclined surface 19a formed in the guide portion 19 on the front side is inclined so as to move away from the lower surface 5a toward the front side. Moreover, the inclined surface 19a formed in the guide part 19 of the back side inclines so that it may approach the lower surface 5a, so that it goes to the back side.

  Also in the fourth modification, the respective contact portions 27 arranged on the front side and the rear side of the vehicle are members that are held by the upper rail 2 and are provided on the lower rail 1 (upper plate) in order to increase sliding resistance. It can be said that the member is sandwiched between the portion 5) and the upper rail 2 (guide portion 19). The contact portion 27 on the front side corresponds to the “first wedge member” in the present embodiment. Further, the abutting portion 27 disposed at a position on the rear side of the first wedge member corresponds to the “second wedge member” in the present embodiment.

  In the fourth modification, a first slider 260 and a second slider 270 are provided instead of the pair of sliders 26 and 26. The first slider 260 is a member that supports the contact portion 27 on the front side. The second slider 270 is a member that supports the abutting portion 27 on the rear side.

  The first slider 260 and the second slider 270 move the respective abutting portions 27 in the same predetermined direction (specifically, the −x direction), and between the abutting portion 27 and the lower rail 1 (the lower surface 5a). It can be said that the sliding friction is increased by increasing the working frictional force. The first slider 260 disposed on the front side moves the first wedge member in the −x direction and increases the frictional force acting between the first wedge member and the lower rail (lower surface 5a), thereby reducing the sliding resistance. It corresponds to the “first support member” for increasing. Further, the second slider 270 disposed at a position on the rear side of the first support member moves the second wedge member in the −x direction, and between the second wedge member and the lower rail (lower surface 5a). This corresponds to the “second support member” for increasing the sliding resistance by increasing the working frictional force.

  Specific configurations of the first slider 260 and the second slider 270 will be described with reference to FIGS. FIG. 20 is a perspective view illustrating the first slider 260 and the second slider 270 in a state of being assembled with each other as viewed from below. FIG. 21 is an exploded view thereof. FIG. 22 is a perspective view illustrating the second slider 270 as viewed from above.

  The first slider 260 has a linear portion 261 formed in a rod shape. The straight portion 261 is formed so that the outer shape of the cross section perpendicular to the longitudinal direction is a rectangle. An abutting portion 27 similar to that described with reference to FIG. 5 is formed at the end of the straight portion 261 on the x direction side. A support portion 265 is formed at the end of the straight portion 261 on the −x direction side. As shown in FIG. 19, the support portion 265 is a portion that is rotatably supported with respect to the lower end portion of the lower arm portion 21 b of the second lever 21.

  A concave portion 263 that recedes toward the z direction side is formed on the surface of the linear portion 261 on the −z direction side. As shown in FIG. 21, the recess 263 is formed in the portion of the support portion 265 on the −x direction side. A partition plate 262 is formed at a position that is an end of the recess 263 on the x direction side. In addition, a partition plate 264 is formed at a position that is an end of the recess 263 on the −x direction side. Both of the partition plates 262 and 264 are formed in a flat plate shape perpendicular to the x-axis.

  As shown in FIG. 22, the second slider 270 has an intermediate portion 271, a pair of horizontal arms 272, and a pair of vertical arms 273. The intermediate portion 271 is a central portion in the y direction of the second slider 270. A front plate 2711 and a rear plate 2712 are formed in the intermediate portion 271. The front plate 2711 is formed so as to protrude toward the z direction side at a position that is an end portion on the x direction side of the intermediate portion 271. The rear plate 2712 is formed so as to protrude in the z direction side at a position that is an end portion on the −x direction side of the intermediate portion 271. Both the front plate 2711 and the rear plate 2712 are formed in a flat plate shape perpendicular to the x-axis.

  The pair of horizontal arms 272 are portions formed so as to extend from the lower end of the intermediate portion 271 in the −y direction and the y direction, respectively. Each horizontal arm 272 is formed in a flat plate shape perpendicular to the z-axis.

  The pair of vertical arms 273 are portions formed so as to extend in the z direction from the tips of the respective horizontal arms 272. Each of the vertical arms 273 is formed in a flat plate shape perpendicular to the y-axis. Each vertical arm 273 extends further toward the −x direction side than the rear plate 2712. A contact portion 27 is formed at a position that is an end portion on the −x direction side of each vertical arm 273. Unlike the configuration shown in FIG. 5, the contact portion 27 has a shape having only the arm portion 27 b without the intermediate portion 27 a (the intermediate portion 271 of the present embodiment is the intermediate portion in FIG. 5). It can also be said to correspond to the portion 27a).

  As shown in FIGS. 20 and 21, in a state where the first slider 260 and the second slider 270 are assembled to each other, the intermediate portion 271 of the second slider 270 is in relation to the concave portion 263 of the first slider 260. And inserted from below. The second slider 270 can move along the x axis with respect to the first slider 260 while the intermediate portion 271 is inserted in the recess 263 in this way.

  A coil spring 280 is disposed in the recess 263. One end of the coil spring 280 is in contact with the partition plate 262 of the first slider 260, and the other end is in contact with the front plate 2711 of the second slider 270. The coil spring 280 applies a force in such a direction as to push the partition plate 262 and the front plate 2711 apart from each other along the x axis. In other words, the coil spring 280 biases the first slider 260 toward the x direction, and biases the second slider 270 toward the −x direction. In a state where an external force is not applied to each of the first slider 260 and the second slider 270 (that is, a state as shown in FIG. 20), the rear plate 2712 of the second slider 270 acts on the partition plate 264 of the first slider 260. It is in the state pressed against.

  As described above, the coil spring 280 is provided between the first slider 260 (first support member) and the second slider 270 (second support member), and applies a force to widen the gap between the two. Yes. Such a coil spring 280 corresponds to an “elastic member” in the present embodiment. Instead of the coil spring 280, an elastic member of another aspect may be used.

  Next, the operation of the seat slide device 100C will be described. In FIG. 19, a lock state is established by the slide lock mechanism 13. The wire 24 is pulled toward the rear of the vehicle, and the second lever 21 swings around the rotating shaft 22 in the clockwise direction. As a result, the first slider 260 and the contact portion 27 at the tip thereof are moved in the x direction, and a gap is formed between the contact portion 27 and the lower surface 5 a of the upper plate portion 5.

  Further, the rear plate 2712 and the partition plate 264 are in contact with each other. Therefore, as the second lever 21 swings in the clockwise direction as described above, the second slider 270 and the contact portion 27 at the tip thereof are moved in the −x direction. A gap is also formed between 27 and the lower surface 5 a of the upper plate portion 5.

  As described above, in the state shown in FIG. 19, neither the front contact portion 27 nor the rear contact portion 27 is in contact with the lower surface 5a. For this reason, the sliding resistance when moving the seat forward (third sliding resistance) and the sliding resistance when moving the seat backward (fourth sliding resistance) are both small. ing.

  When the force with which the wire 24 is pulled rearward from the state shown in FIG. 19 is weakened, the second lever 21 swings around the rotating shaft 22 in the counterclockwise direction by the elastic restoring force of the coil spring 23. Move. FIG. 23 schematically shows the intermediate stage. In the state of FIG. 23, each of the first slider 260 and the second slider 270 is moved to the −x direction side with the swinging of the second lever 21. Thus, the rear contact portion 27 provided on the second slider 270 is sandwiched between the inclined surface 19 a and the lower surface 5 a of the upper plate portion 5 like a wedge.

  On the other hand, in the state immediately after the rear contact portion 27 contacts the lower surface 5a (that is, the state of FIG. 23), the front contact portion 27 has not yet contacted the lower surface 5a. Thus, in the seat slide device 100C, the length of the linear portion 261 and the like are designed so that the abutting portion 27 on the rear side is in contact with the lower surface 5a first.

  If the force with which the wire 24 is pulled rearward is further weakened from the state of FIG. 23, the second lever 21 further swings counterclockwise by the elastic restoring force of the coil spring 23. At this time, since the rear contact portion 27 is already in contact with the lower surface 5a, the second slider 270 does not move further to the −x direction side. That is, when moving from the state of FIG. 23 to the state of FIG. 24 described later, the position of the second slider 270 along the x-axis does not change.

  On the other hand, the first slider 260 further moves to the −x direction side against the elastic restoring force of the coil spring 280. At this time, the first slider 260 moves relative to the second slider 270 (which is stationary). In other words, the intermediate portion 271 of the second slider 270 relatively slides within the recess 263. Finally, as shown in FIG. 24, the front contact portion 27 provided on the first slider 260 is sandwiched between the inclined surface 19a and the lower surface 5a of the upper plate portion 5 like a wedge. It becomes a state.

  As described above, in the present embodiment, when the second lever 21 rotates counterclockwise, the rear contact portion 27 is first brought into contact with the lower surface 5a. The part 27 can also be brought into contact with the lower surface 5a. Even if there is an error in the dimensions of the first slider 260 and the like, the respective contact portions 27 can be reliably brought into contact with the lower surface 5a, so that the sliding resistance when moving the sheet is large. The size can be as designed.

  The second lever 21 moves the first slider 260 as the first support member to the −x direction side, thereby increasing the sliding resistance. Such a second lever 21 corresponds to a “lever member” in the present embodiment.

  In the present embodiment, the first slider 260 that supports the front-side contact portion 27 and the second slider 270 that supports the rear-side contact portion 27 are configured as separate components. Instead of such a mode, a mode in which the first slider part 310 and the second slider part 320 are integrally formed may be employed as in a fifth modification shown in FIG. The first slider portion 310 is a portion corresponding to the “first support member” in this modification. The second slider portion 320 is a portion corresponding to the “second support member” in this modification.

  In this modification, the first slider part 310 and the second slider part 320 are connected by a spring part 330, and the first slider part 310, the second slider part 320, and the spring part 330 are integrated as a whole. It is formed as a part. The spring portion 330 is a portion corresponding to the “elastic member” in this modification.

  A support portion 311 is formed in a portion of the first slider portion 310 close to the spring portion 330. The support portion 311 is a portion that is rotatably supported by the lower end portion of the lower arm portion 21b of the second lever 21 in the same manner as the support portion 265 of the fourth modified example (FIG. 19).

  In such a configuration, in addition to the same effects as those described for the fourth modification, there is also an effect that the number of parts for configuring the first support member and the second support member can be reduced.

  Points to be noted regarding the technology described in the embodiments will be described. The interlocking mechanism of the handle operated by the user, the slide unlock lever 50, and the seat unlock lever 60 is not limited to the embodiment.

  When the seat lock mechanism 231 is released, the seat back becomes rotatable. The seat back may be biased forward, and the seat back may be folded forward as the seat lock mechanism 231 is released.

  The seat slide apparatus 100 has the following features. The seat slide device 100 includes a first wedge member (a contact portion 27 interlocking with the first lever 20), a first support member (slider 26 interlocking with the first lever 20), and a second wedge member (second lever). 21) and a second support member (slider 26 interlocked with the second lever 21). The first wedge member is a member held by the upper rail 2 and is sandwiched between the lower rail 1 and the upper rail 2 in order to increase sliding resistance. The first support member increases the sliding resistance by moving the first wedge member forward of the vehicle and increasing the friction force acting between the first wedge member and the lower rail 1. The second wedge member is a member that is held by the upper rail 2 at a position on the rear side of the first wedge member, and is sandwiched between the lower rail 1 and the upper rail 2 in order to increase sliding resistance. The second support member increases the sliding resistance by moving the second wedge member to the rear side of the vehicle and increasing the frictional force acting between the second wedge member and the lower rail 1.

  Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology exemplified in this specification or the drawings can achieve a plurality of objects at the same time, and has technical usefulness by achieving one of the objects.

1: Lower rail 2: Upper rail 3: Bottom plate portion 4: Side plate portion 5: Upper plate portion 6: Mouth plate portion 7: Opening 8: Housing space 9: Metal plate 10: Side plate portion 11: Arm plate portion 12: Roller 13: Slide Lock mechanism 14, 114: Lock member 14a: Claw part 14b: Operation part 15: Bracket 16: Rotating shaft 18: Coil spring 19: Guide part 19a: Inclined surface 20, 120: First levers 20a, 21a, 120a, 121a: Upper arm portions 20b, 21b, 120b, 121b: lower arm portions 20c, 21c, 120c, 121c: transmission portion 21: second lever 22: rotating shaft 23, 123: coil spring 24: wire 25: support shaft 26: slider 27: Contact part 27a: Intermediate part 27b: Arm part 28: Through hole 50: Slide unlock lever 51: Push-down pins 52, 61, 213, 313, 323: Rotating shaft 54: Braver 55: Connecting rod 60: Seat unlock lever 62, 315, 325, 327: Wire 63, 326, 328, 329: Pulley 100: Seat slide device 124: Connecting rod 129: Stopper 200, 300: Seat 210, 310: Seat cushion 212: Handle 214: Body portion 215, 314, 324: Lever portion 216: Long hole 220, 320: Seat back 230: Hinge 231: Seat lock mechanism 312: First handle 322: Second handle

Claims (7)

Seat cushions,
A lower rail fixed to the vehicle floor;
An upper rail fixed to the seat cushion and supported so as to be slidable in the vehicle longitudinal direction with respect to the lower rail;
A slide lock mechanism for locking the upper rail with respect to the lower rail;
A handle for releasing the slide lock mechanism;
With
When the handle is moved from the locked position to the first unlocked position, the slide lock mechanism is released, and the first sliding resistance is set as the sliding resistance for the forward movement of the upper rail,
A vehicle seat, wherein when the handle is moved from the first unlocked position to the second unlocked position, a low sliding resistance smaller than the first sliding resistance is set as the sliding resistance.   2. The vehicle seat according to claim 1, wherein at the first unlock position, a second sliding resistance smaller than the first sliding resistance is set as a sliding resistance of the rearward movement of the upper rail. A seat back rotatably supported with respect to the seat cushion;
A seat lock mechanism for locking the seat cushion and the seat back to a seatable posture;
Further comprising
When the handle is moved from the lock position to the first unlock position, the slide lock mechanism is released while the seat lock mechanism is held in the locked state,
3. The vehicle according to claim 1, wherein when the handle is moved from the first unlock position to the second unlock position, the seat lock mechanism is released while the release of the slide lock mechanism is held. Sheet. A first wedge member that is held by the upper rail, is tapered toward the front of the vehicle, and is sandwiched between the lower rail and the upper rail;
A second wedge member that is held by the upper rail, tapers toward the rear of the vehicle, and is sandwiched between the lower rail and the upper rail;
A first interlocking mechanism for moving the first wedge member to the rear of the vehicle when the handle is moved from the locked position to the first unlocked position;
A second interlocking mechanism for moving the second wedge member forward of the vehicle when the handle is moved from the first unlock position to the second unlock position;
The vehicle seat according to any one of claims 1 to 3, further comprising: Seat cushions,
A lower rail fixed to the vehicle floor;
An upper rail fixed to the seat cushion and supported so as to be slidable in the vehicle longitudinal direction with respect to the lower rail;
A slide lock mechanism for locking the upper rail with respect to the lower rail;
A first handle that releases the slide lock mechanism and sets a first sliding resistance to a sliding resistance when the upper rail moves forward;
A second handle for releasing the slide lock mechanism and setting the sliding resistance to a low sliding resistance smaller than the first resistance value;
A vehicle seat comprising:   The vehicle according to claim 5, wherein the first handle releases a slide lock mechanism and sets a second sliding resistance smaller than the first sliding resistance as a sliding resistance when the upper rail moves backward. Sheet. A seat back rotatably supported with respect to the seat cushion;
A seat lock mechanism for locking the seat cushion and the seat back to a seatable posture;
Further comprising
The vehicle seat according to claim 5 or 6, wherein the second handle releases the slide lock mechanism and also releases the seat lock mechanism.

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