JP2019038508A - Seat device - Google Patents

Abstract

To achieve compactification of a position adjustment device provided to adjust a position of a seat in a height direction of a vehicle and adjust the position of the seat more efficiently.SOLUTION: A device 20 for adjusting a position of a seat in a height direction has: a seat support plate 30 supporting the seat; and a rotation link 40 which integrally rotates with the seat support plate 30 when the position of the seat is adjusted. The seat support plate 30 has: a front part 31 located immediately below a hip of an occupant when the occupant is seated on the seat; and a rear part 32 located at the rear side relative to the front part 31. The rotation link 40 has a front link 41 and a rear link 42 provided at positions different in a fore and aft direction. The front link 41 and the rear link 42 are attached to the front part 31 and a breadth of the front part 31 is shorter than a breadth of the rear part 32.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a seat device having a saddle-ride type seat on which a vehicle occupant sits, and more particularly to a seat device capable of adjusting the position of a seat in the height direction of the vehicle.

  A configuration in which a saddle type seat (seat) is movable in a vehicle such as a motorcycle is already known. For example, the motorcycle described in Patent Document 1 is provided with a drive mechanism (front drive mechanism) that raises and lowers the front part of the seat and a drive mechanism (rear drive mechanism) that raises and lowers the rear part of the seat. These drive mechanisms have a drive motor and a link that interlocks with the movement of the drive motor. And the height of each part of a sheet changes when a drive motor rotates and a link rotates in the form linked with this.

  Further, in the motorcycle disclosed in Patent Document 1, drive mechanisms are provided separately for the front and rear of the seat. For this reason, it becomes possible to adjust each height independently in the front part and back of a seat. As a result, the outer shape of the seat can be freely changed in three dimensions.

Japanese Patent No. 4737548

  By the way, in the configuration in which the seat is movable, a device similar to the drive mechanism (front drive mechanism and rear drive mechanism) described in Patent Document 1, that is, a device for adjusting the position of the seat is provided. It is desirable that such a device is more compact and can adjust the seat position efficiently in a state where a vehicle occupant is seated on the seat.

  Therefore, the present invention has been made in view of the above problems, and its purpose is to make the position adjustment device provided for adjusting the seat position in the height direction of the vehicle more compact and more efficient. It is an object of the present invention to provide a sheet apparatus that can adjust the sheet position well.

  According to the seat device of the present invention, the subject includes a saddle-ride type seat on which a vehicle occupant is seated, and a position adjustment device that adjusts the position of the seat in the height direction of the vehicle, The position adjusting device includes a plate-like support member that supports the sheet in a state where the sheet is placed, and a rotation link that rotates integrally with the support member when adjusting the position of the sheet. The support member includes a front portion positioned immediately below the buttocks of the occupant when the occupant is seated on the seat, and a rear portion positioned rearward of the front portion in the front-rear direction of the vehicle. The pivot link has a front link and a rear link provided at different positions in the front-rear direction, and the front link and the rear link are attached to the front portion, and the vehicle In the width direction of Width of the serial front portion is solved by less than the width of the rear portion in the width direction.

In the seat device of the present invention configured as described above, the front side link and the rear side link are assembled to the front part of the plate-like support member that supports the sheet in a state where the sheet is placed. Further, the front portion is located immediately below the occupant's buttocks when the occupant sits on the seat. Thereby, when adjusting a seat position, the front part on which the crew member's buttocks got on is moved in conjunction with the turning operation of each turning link. As a result, the sheet position is adjusted more efficiently (smoothly).
Furthermore, the width | variety of the front part in the horizontal width direction of a vehicle is shorter than the width | variety of the rear part of a plate-shaped member. Thereby, it becomes possible to save space (compact) around the front portion of the support member to which the rotation link is attached.

In the sheet apparatus, the sheet includes a bottom plate that forms a bottom portion, and the bottom plate includes a claw-shaped portion that extends in a claw shape and two fixed portions that are fixed to the support member. A front engagement portion that engages with the claw-shaped portion is provided at the front end portion of the support member, and the rear end portion of the support member is formed to fix the fixed portion. One fixing part may be provided.
In the above configuration, the claw-shaped portion and the two fixed portions formed on the bottom plate of the sheet are each fixed to the fixing portion of the support member. Thereby, it becomes possible to fix a sheet | seat to a supporting member in fewer fixed locations.

More preferably, the fixed portion is fixed to each of the fixing portions via an elastic member for suppressing vibration transmission from the vehicle body of the vehicle to the seat.
In the above configuration, the fixed portion provided on the bottom plate of the sheet is fixed to the fixing portion of the support member via the elastic member. Accordingly, it is possible to suppress the transmission of vibrations from the vehicle body of the vehicle to the seat while the vehicle is traveling, and to improve the riding comfort of the seat.

In the sheet apparatus, the sheet includes a bottom plate that forms a bottom portion, the bottom plate includes a plurality of extending portions that protrude so as to protrude, and the support member includes the extension plate. It is preferable that the same number of engaging portions as the extending portions are formed at different positions in the front-rear direction.
In the above configuration, the plurality of extending portions formed on the bottom plate of the sheet are engaged with the corresponding engaging portion among the plurality of engaging portions provided on the support member. This makes it possible to position the sheet with respect to the support member when the sheet is fixed (assembled) to the support member. As a result, the sheet is appropriately fixed to the support member.

In the seat device, the seat has a seating surface, an end surface of the front portion closer to the seating surface in the height direction is a flat surface, and the height of the rear portion is The end surface closer to the seating surface in the direction may be an inclined surface that is inclined so as to approach the seating surface as it goes rearward.
In said structure, the upper surface (surface nearer to a seating surface) of a front part is a flat surface. As a result, when the occupant sits on the seat, the front portion appropriately receives the load of the occupant. Furthermore, since the upper surface of the rear part (the surface closer to the seating surface) is a surface that is inclined so as to be positioned upward as it goes rearward, the seating posture of the occupant can be stabilized.

More preferably, the flat surface is a plane whose normal direction is the height direction.
In said structure, the surface (flat surface) which receives a passenger | crew's load is a plane which makes the height direction of a vehicle the normal line direction. Thereby, the effect that the front part appropriately receives the load of the occupant can be more effectively exhibited.

Further, in the seat device, the support member has an adjacent portion that is adjacent to the front portion in front of the front portion in the front-rear direction, and the adjacent portion moves toward the front in the front-rear direction. It is good to incline so that it may approach a seating surface.
In said structure, the adjacent part located in front side rather than the front part in a support member inclines so that it may be located upwards as it goes ahead. Thereby, when the traveling speed of the vehicle decreases, it is possible to suppress the occupant from moving forward due to inertia by the adjacent portion.

In the seat device, the position of the seat is adjusted within a range from the first position to the second position, and in the height direction, the second position is closer to the vehicle than the first position. It is a position away from the ground that is in contact with the ground, and the inclination degree of each of the front link and the rear link may change as the position of the seat moves from the first position to the second position.
In the above configuration, the seat moves from the first position to the second position by rotating the respective states of the front link and the rear link from the forward inclined state toward the rear. Thereby, the position of the sheet can be adjusted with a relatively simple configuration.

More preferably, in the front-rear direction, the second position may be a rear position with respect to the first position.
In the above configuration, when the sheet moves from the first position to the second position, the sheet moves obliquely backward. By following such a movement path, the sheet can easily avoid a situation where the sheet interferes with its peripheral devices. Further, according to the above configuration, it is easier to move the sheet as compared with a configuration in which the sheet is moved directly upward when the sheet position is raised.

Alternatively, in the front-rear direction, the second position may be a position ahead of the first position.
In the above configuration, when the seat moves from the first position to the second position, it moves obliquely forward. With such a configuration, a space between a member (for example, a fuel tank) disposed obliquely above the seat and the seat can be reduced, and as a result, the appearance (appearance) around the seat device is good. It will be a thing.

In the seat device, the position adjustment device is an integrated unit of the position adjustment device including the support member and the rotation link, and is detachable from the vehicle body of the vehicle. It is good to be attached in a state.
In said structure, the apparatus which comprises a position adjustment apparatus is integrated as a unit, and is attached in the state which can be attached or detached with respect to the vehicle body of a vehicle. This makes it easier to handle and replace the position adjusting device.

According to the seat device of the present invention, the adjustment of the seat position is performed more efficiently. Further, the space around the place where the rotation link is attached is saved.
In addition, according to the seat device of the present invention, it is possible to fix the sheet to the support member with fewer fixing points.
Further, according to the seat device of the present invention, it is possible to suppress the transmission of vibration from the vehicle body of the vehicle to the seat while the vehicle is traveling, and to improve the riding comfort of the seat.
Further, according to the seat device of the present invention, when the sheet is fixed to the support member, the sheet can be positioned and fixed appropriately with respect to the support member.
Further, according to the seat device of the present invention, when the occupant is seated on the seat, the load of the occupant can be appropriately received, and the seating posture of the occupant can be stabilized.
In addition, according to the seat device of the present invention, the surface that receives the occupant's load (flat surface) is a plane whose normal direction is the height direction of the vehicle, so that the front portion appropriately receives the occupant's load. The effect of stabilizing the sitting posture of the occupant can be exhibited more effectively.
Further, according to the seat device of the present invention, it is possible to prevent the occupant from moving forward due to inertia when the traveling speed of the vehicle decreases.
Further, according to the seat device of the present invention, it is possible to adjust the position of the seat using a relatively simple drive mechanism.
In addition, according to the seat device of the present invention, it is easy to avoid a situation in which the sheet interferes with its peripheral devices because the sheet moves obliquely rearward from the first position toward the second position. In addition, it is possible to move the sheet more easily as compared with a configuration in which the sheet is moved directly above when raising the sheet position.
According to the seat device of the present invention, the sheet moves obliquely forward from the first position toward the second position, thereby narrowing a space between the member disposed obliquely above the sheet and the sheet. Thus, the appearance around the sheet device is improved.
In addition, according to the seat device of the present invention, the components of the position adjustment device are integrated as a unit and can be attached to and detached from the vehicle body, so that the position adjustment device can be handled and replaced more easily. become.

It is a figure showing a motorcycle carrying a seat device concerning one embodiment of the present invention. It is a figure which shows the position adjustment apparatus of the state attached to the vehicle body. It is an exploded view of a position adjusting device. It is a figure which shows the part which can attach a position adjustment apparatus in a vehicle body. It is a figure which shows the state which the bottom plate of the sheet | seat is engaging with the supporting member. It is a figure which shows the state by which the bottom plate of the sheet | seat is being fixed to the supporting member. It is a figure which shows the state of the position adjustment apparatus when the position of a sheet | seat exists in a 1st position. It is a figure which shows the state of the position adjustment apparatus when the position of a sheet | seat exists in a 2nd position. It is a schematic diagram which shows the gap plugging material provided between the seat front end and the vehicle body. It is a figure which shows the cover plate provided in the sheet | seat side part. It is a figure which shows the AA cross section in FIG. It is a block diagram which shows the control mechanism of a sheet | seat apparatus. It is a figure which shows an example of the automatic control flow of sheet position adjustment. It is explanatory drawing about the sheet position adjustment which concerns on a modification (the 1). It is explanatory drawing about the sheet position adjustment which concerns on a modification (the 2). It is an exploded view of the position adjustment apparatus which concerns on a modification. It is a figure which shows the structure which attaches the position adjustment apparatus which concerns on a modification to a vehicle body. It is a figure which shows the structure of a sheet | seat and its peripheral device.

  Hereinafter, an embodiment (this embodiment) of the present invention will be described. In addition, embodiment described below is for making an understanding of this invention easy, and does not limit this invention. That is, the present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents thereof.

  In the following embodiments, a motorcycle will be described as an example of a “vehicle”. However, the present invention is not limited to this, and the present invention can be applied to a vehicle having a saddle-ride type seat.

  Incidentally, in the following description, the “front-rear direction” is the front-rear direction of the vehicle and coincides with the traveling direction of the vehicle. Further, the “horizontal width direction” is the horizontal width direction of the vehicle, and coincides with the left-right direction when viewed from the vehicle occupant. The “height direction” is the height direction of the vehicle, and coincides with the vertical direction when the vehicle stands upright on the horizontal plane.

  In the following description, the direction and position of each device and each device are the direction and position in a state where the vehicle stands upright on a horizontal plane, unless otherwise specified.

<< Schematic Configuration of Sheet Device According to this Embodiment >>
First, a schematic configuration of a seat device (hereinafter referred to as a seat device 10) according to the present embodiment will be described with reference to FIGS. In FIG. 1, a device 20 described later is schematically illustrated for convenience of illustration.

  The seat device 10 is set and used in the motorcycle 1 as shown in FIG. Here, the motorcycle 1 has the same configuration as a general motorcycle except that it includes a device 20 described later.

  The seat device 10 includes a saddle-ride type seat 2 on which a vehicle occupant sits. The seat 2 is a seating seat having a general configuration, and has a seating surface 2a on the upper surface thereof. The seat 2 is attached to the vehicle body 3 so as to be detachable from the vehicle body 3 of the motorcycle 1. Specifically, a mounting hole (not shown) is formed in the vehicle body 3, and the seat 2 is attached to the vehicle body 3 using the mounting hole, and bolts inserted into the mounting holes are attached to the seat 2. It can be removed by removing it.

  As shown in FIG. 1, the sheet apparatus 10 includes a device 20 at a position directly below the sheet 2. The device 20 corresponds to a position adjusting device and adjusts the seat 2 in the height direction. More specifically, in the sheet apparatus 10 according to the present embodiment, the sheet 2 can be moved in the height direction by the function of the device 20. As a result, the seat height can be adjusted according to the preference of the occupant who is the seat occupant, or can be adjusted according to the traveling state of the motorcycle 1. By such a function, for example, when a relatively large occupant is seated on the seat 2, the physique difference between the occupant and a standard physique can be absorbed by raising the seat position. .

  As shown in FIG. 2, the device 20 is attached to a predetermined part of the vehicle body 3 of the motorcycle 1, strictly speaking, a part to which the seat 2 is originally attached. The device 20 is attached to the vehicle body 3 so as to be detachable from the vehicle body 3. More specifically, the device 20 is attached to the vehicle body 3 using the attachment holes formed in the vehicle body 3 in order to attach the seat 2. The device 20 is configured so that the seat 2 can be assembled. In the present embodiment, the seat 2 is attached to the vehicle body 3 via the device 20. That is, the seat 2 is attached to the vehicle body 3 by assembling the seat 2 to the device 20 attached to the vehicle body 3.

  As for the device 20, a standard seat 2 can be assembled as a seat for a motorcycle. Therefore, the device 20 can be attached (convertible) to a standard motorcycle 1 that is an off-the-shelf product. And by attaching the device 20 to the motorcycle 1 which is an off-the-shelf product, the function of adjusting the seat position is given to the motorcycle 1.

<< Detailed Configuration of Sheet Device 10 >>
Next, the mechanical configuration of the sheet apparatus 10 will be described in detail with reference to FIGS. As described above, the sheet apparatus 10 includes the sheet 2 and the device 20. The device 20 includes the devices illustrated in FIG. 3 (strictly speaking, the sheet support plate 30, the rotation link 40, the link support plate 50, the base plate 52, and the motor device 60). In the present embodiment, the constituent devices of the device 20 described above form a single unit by combining the devices. That is, the device 20 according to the present embodiment is obtained by integrating the constituent devices as a unit. The configuration of the device 20 will be described in detail later.

  The seat 2 has the same configuration as a general motorcycle seat. More specifically, the sheet 2 has a bottom plate 2b illustrated in FIGS. The bottom plate 2b forms the bottom of the seat 2, and a cushion material (not shown) is placed thereon. And the sheet | seat 2 is completed because the cushion material on the bottom plate 2b is covered with a skin material. The seat 2 is divided into a front seat (front portion) and a rear seat (rear portion).

  Further, the bottom plate 2 b has a plurality of portions provided for attaching the sheet 2 to the device 20. If it demonstrates in detail, referring FIG.5 and FIG.6, the bottom plate 2b has two extension parts extended so that it might protrude outside as shown in FIG. One extending portion is a claw-shaped portion 2c that extends in a claw shape from the front end of the bottom plate 2b toward the front. Another extending portion is a rear protrusion 2d provided somewhat in front of the rear end of the bottom surface of the bottom plate 2b. The rear protrusion 2d extends downward, and strictly speaking, the rear protrusion 2d is inclined so as to be positioned downward toward the rear.

  Further, a fixed portion 2e shown in FIG. 6 is provided at the rear end portion of the bottom plate 2b. The fixed portion 2e is a portion that is fixed to the sheet support plate 30 when the sheet 2 is attached to a sheet support plate 30 described later, and extends downward from the rear portion of the bottom surface of the bottom plate 2b. In the present embodiment, the bottom plate 2b includes two fixed portions 2e. One fixed portion 2e is provided at one end of the bottom plate 2b in the horizontal width direction, and the other fixed portion 2e is provided at the other end of the bottom plate 2b in the horizontal width direction.

  Next, the configuration of the device 20 will be described. As shown in FIG. 3, the device 20 includes a sheet support plate 30, a rotation link 40, a link support plate 50, a base plate 52, and a motor device 60 as main components. Hereinafter, each device will be described.

  The sheet support plate 30 corresponds to a plate-like support member, and supports the sheet 2 with the sheet 2 placed on the upper surface thereof. The sheet support plate 30 is configured by bending a metal plate cut into a predetermined shape so as to have the shape shown in FIG.

  The shape of the seat support plate 30 will be described. The seat support plate 30 includes a front part 31, a rear part 32, an adjacent part 33, a link attaching part 34, a fixing part 35, and an L-shaped part 36. The front portion 31 is a portion located at the front side portion of the seat support plate 30. When the occupant of the motorcycle 1 sits on the seat 2, the front portion 31 is located directly below the occupant's buttocks. That is, the front portion 31 is a portion that receives the load (sitting load) of the occupant on the seat support plate 30.

  More specifically, the front portion 31 supports the bottom plate 2b of the seat 2 on the upper surface 31a (the end surface on the side close to the seating surface 2a of the seat 2 in the height direction). In the present embodiment, the upper surface 31a of the front portion 31 is a flat surface, and more strictly, is a flat surface (that is, a horizontal surface) whose normal direction is the height direction. With such a configuration, when the occupant is seated on the seat 2, the front portion 31 appropriately receives the occupant's load. In the present embodiment, the upper surface 31a of the front portion 31 is a flat surface. However, the present invention is not limited to this, and may be, for example, a curved surface.

  The rear part 32 is a part located behind the front part 31 in the front-rear direction. Further, the rear portion 32 is inclined so as to be located upward as it goes rearward (in other words, so as to approach the seating surface 2a of the seat 2). Therefore, the upper surface 32a (the end surface on the side close to the seating surface 2a of the seat 2 in the height direction) of the rear portion 32 is an inclined surface that is inclined so as to be positioned upward as it goes rearward. With such a configuration, the rear portion 32 can restrict the occupant's buttocks from moving backward while the motorcycle 1 is traveling, and the occupant's seating posture can be stabilized. .

  The rear portion 32 is continuous with the front portion 31 in the front-rear direction. Further, the rear portion 32 is somewhat wider than the front portion 31. Therefore, the front part 31 and the rear part 32 which are mutually continuous are substantially T-shaped when viewed from above as shown in FIG.

  The adjacent portion 33 is a portion located on the most front side in the sheet support plate 30. The adjacent portion 33 is adjacent to the front portion 31 on the front side of the front portion 31 in the front-rear direction. Further, the adjacent portion 33 is inclined so as to be positioned upward as it goes forward in the front-rear direction (in other words, so as to approach the seating surface 2a of the seat 2). With such a configuration, when the motorcycle 1 in the traveling state decelerates, the adjacent portion 33 can restrict the occupant's buttocks from moving forward due to inertia.

  The link attachment portion 34 is a portion provided at both end portions of the seat support plate 30 in the lateral width direction for attaching the rotation link 40, and hangs down from the end position of the front portion 31 in the lateral width direction. The link attachment portion 34 extends in the front-rear direction, and supports the rotation shaft of the rotation link 40 at the front end portion and the rear end portion (strictly, the portion located slightly ahead of the rear end). A portion to be provided is provided.

  The fixing portion 35 is a portion formed to fix the fixed portion 2e provided on the bottom plate 2b of the seat 2, and is a rear end portion (strictly speaking, the rear portion 32 of the rear portion 32). (Rear end position). In the present embodiment, a pair (two) of the fixing portions 35 are provided at positions separated from each other in the lateral width direction. Each fixing portion 35 is provided at both ends of the rear portion 32 in the lateral width direction. The fixing unit 35 will be described in detail later.

  The L-shaped portion 36 is a portion that is bent in a lateral L-shape when viewed from the front, and is provided at a position ahead of the fixed portion 35 at the rear end portion (rear portion) of the seat support plate 30. In the present embodiment, a pair (two) of L-shaped portions 36 are provided at positions separated from each other in the lateral width direction. Each L-shaped part 36 is provided at both ends of the rear part 32 in the lateral width direction. And each L-shaped part 36 supports the side edge part of the rear-end part of the sheet | seat support plate 30 in the upper end surface.

  The sheet support plate 30 described above supports the sheet 2 at a position below the sheet 2. Further, the rotation link 40 is assembled to the link attachment portions 34 provided at both ends in the width direction of the seat support plate 30. More specifically, the link attachment portions 34 are provided at both ends of the front portion 31 in the lateral width direction. Further, the lateral width of the front part 31 is shorter than the lateral width of the rear part 32. That is, in the seat support plate 30, the size of the front portion 31 to which the rotation link 40 is attached is smaller than the size of the rear portion 32. As a result, in this embodiment, the space around the front portion 31 to which the rotation link 40 is attached is space-saving (compact).

  Further, the sheet support plate 30 has a plurality of portions formed to support the sheet 2. More specifically, the bottom plate 2b has two extending portions (specifically, a claw-like portion 2c and a rear projection 2d) as described above. The sheet support plate 30 is formed with the same number of engaging portions as the extending portions that engage with the extending portions. That is, in the present embodiment, two engaging portions are formed on the sheet support plate 30. Further, the two engaging portions are formed at different positions in the front-rear direction.

  More specifically, one engaging portion is the front engaging portion 37 shown in FIG. The front side engaging portion 37 is made of a wire member and is attached to the front end portion of the upper surface of the adjacent portion 33. More specifically, the wire member constituting the front engagement portion 37 is bent in a rectangular wave shape, and the portion located in the central portion in the lateral width direction is somewhat from the upper surface of the adjacent portion 33 as shown in FIG. It is floating. In fixing the seat 2 to the seat support plate 30, the front side engaging portion 37 engages with the claw-like portion 2c. Specifically, as shown in FIG. 5, the front end portion of the claw-like portion 2 c is inserted into the gap between the portion of the front side engaging portion 37 that is lifted from the upper surface of the adjacent portion 33 and the adjacent portion 33. Thereby, the front side engaging part 37 comes to engage with the claw-like part 2c.

  The other engaging portion is a rear engaging portion 38 shown in FIG. The rear engagement portion 38 is configured by a rectangular hole formed in the boundary portion between the front portion 31 and the rear portion 32 in the seat support plate 30. In fixing the seat 2 to the seat support plate 30, the rear engagement portion 38 is engaged with the rear protrusion 2 d. More specifically, as shown in FIG. 5, the rear engagement portion 38 is made to be the rear projection by inserting the tip end portion of the rear projection 2d into the rectangular hole constituting the rear engagement portion 38. Engage with 2d.

  As described above, in the present embodiment, when the seat 2 is fixed to the seat support plate 30, the two engaging portions are engaged with the corresponding extending portions of the extending portions of the bottom plate 2b. Thereby, it is possible to position the sheet 2 with respect to the sheet support plate 30 and fix the sheet 2 to the sheet support plate 30 thereon.

  Further, a fixing portion 35 formed to fix the sheet 2 is provided at the rear end portion of the sheet support plate 30. The fixing portions 35 are tongue-like extending portions that extend outward from both ends in the lateral width direction of the rear portion 32, and as shown in FIG. 3, a pair (two) of the fixing portions 35 are provided at positions separated from each other. In each of the fixed portions 35, the corresponding fixed portion 2e among the two fixed portions 2e provided at the rear end portion of the bottom plate 2b is fixed.

  More specifically, as shown in FIG. 6, the fixed portion 2e is placed on the end surface of the fixing portion 35 (the end surface facing rearward), and the fixed portion is fixed to the fixing portion 35 by a fastener such as a screw. 2e is fixed. In the present embodiment, the fixed portion 2e is fixed to each fixing portion 35 (corresponding fixing portion 35) via the rubber mount R. The rubber mount R corresponds to an elastic member, and is used to suppress transmission of vibration from the vehicle body 3 of the motorcycle 1 to the seat 2.

  The above-described fixing structure will be specifically described with reference to FIG. 6. An annular rubber mount R is fitted into a screw hole formed in the fixed portion 2 e. And when fixing the to-be-fixed part 2e to the fixing | fixed part 35, the through-hole formed in the center part of the rubber mount R and the screw hole formed in the fixing | fixed part 35 are connected, A screw is put into both holes. insert. Thereby, the fixed part 2e is fixed to the fixing part 35. Then, all the fixed parts 2e are fixed to the fixing part 35, whereby the sheet 2 is fixed to the sheet support plate 30.

  As described above, in the present embodiment, the fixed portion 2e is fixed to the fixing portion 35 with the rubber mount R interposed between the fixed portion 2e of the seat 2 and the fixing portion 35 of the sheet support plate 30. ing. This makes it possible to suppress vibration from being transmitted from the vehicle body 3 to the seat 2 while the motorcycle 1 is traveling, and as a result, ride comfort is improved.

  The mechanism and structure for fixing (attaching) the seat 2 to the seat support plate 30 are not limited to those described above. Any mechanism and structure other than those described above may be used as long as the sheet 2 can be suitably fixed to the sheet support plate 30. Further, regarding the engagement portions and the fixing portions formed on the sheet support plate 30 in order to fix the seat 2, the number and forming positions thereof are not particularly limited and may be arbitrarily determined.

  The rotation link 40 is made of a plate-like member formed in a predetermined shape, and rotates integrally with the sheet support plate 30 when adjusting the position of the sheet 2. The configuration of the rotation link 40 will be described in detail with reference to FIG. 3. The rotation link 40 includes a front link 41 positioned on the front side and a rear link 42 positioned on the rear side. Each of the front link 41 and the rear link 42 is arranged in pairs (two each) with a gap in the width direction.

  Further, the front link 41 and the rear link 42 are attached to the link attaching portion 34 and the link support plate 50 of the seat support plate 30 in a rotatable state, respectively. Specifically, each of the pair of front links 41 is made of a metal plate piece extending in an oval shape when viewed from the side, and is connected by a front connection pipe 43 disposed between the front links 41. . More precisely, a circular hole for inserting the front connection pipe 43 is formed at the upper end portion (one end portion in the extending direction) of each front link 41, and an annular bush is fitted to the edge portion. Yes. And the front side link 41 is connected by the front side connection pipe 43 because the edge part of the front side connection pipe 43 fits in the through-hole of a bush.

  Further, the end portion of the front connection pipe 43 passes through the front link 41 and protrudes to the outside of the front link 41. On the other hand, a circular hole is formed in the front end portion of the link attachment portion 34, and a portion of the end portion of the front connection pipe 43 that protrudes outside the front link 41 is inserted into this circular hole. In addition, the pipe ends are flanged. Thus, each of the pair of front links 41 is attached to the link attachment portion 34 via the front connection pipe 43. Further, the front connection pipe 43 is assembled to the link attachment portion 34 in a state where it can rotate with respect to the link attachment portion 34. Thereby, the upper end part of each front side link 41 is supported by the link attaching part 34 in the state which can rotate integrally with the sheet | seat support plate 30. FIG.

  Further, the lower end portion of each front link 41 (the end portion opposite to the side supported by the link attachment portion 34) is supported on the side wall in a state of being rotatable relative to the side wall of the link support plate 50. Has been. More specifically, a circular hole is formed in the lower end portion of each front link 41, and an annular bush is fitted to the edge portion. A pivot pin P is fitted in the through hole of the bush. The pivot pin P fitted in the through hole of the bush is fixed to the side wall of the link support plate 50. The link support plate 50 is a member made of a metal plate formed in a substantially U shape in front view, and has a bottom wall and a pair of side walls rising from the bottom wall.

  As described above, the lower end portion of the front link 41 is supported on the side wall of the link support plate 50 through the pivot pin P. The pivot pin P can slide on the inner peripheral surface of the bush attached to the lower end of the front link 41. In other words, the front link 41 is rotatable about the pivot pin P as a rotation axis.

  The pair of rear links 42 are attached to the link attachment portion 34 and the link support plate 50 of the seat support plate 30 so as to be rotatable by the same configuration as the support structure described above. More specifically, the pair of rear links 42 are connected by a rear connection pipe 44 disposed between them. Further, the end of the rear connection pipe 44 penetrates the rear link 42 and protrudes to the outside of the rear link 42. On the other hand, a circular hole is formed in the rear end portion of the link attachment portion 34, and a portion of the end portion of the rear connection pipe 44 that protrudes outside the rear link 42 is inserted into this circular hole. In addition, the pipe ends are flanged. As a result, each of the pair of rear links 42 is attached to the link attachment portion 34 via the rear connection pipe 44.

  Further, the rear side connection pipe 44 is assembled to the link attachment portion 34 in a state of being rotatable with respect to the link attachment portion 34. Thereby, the upper end part of each rear side link 42 is supported by the link attaching part 34 in the state which can rotate integrally with the sheet | seat support plate 30. FIG.

  In addition, the lower end portion of each rear side link 42 (strictly speaking, the end portion opposite to the side supported by the link attachment portion 34) can be rotated relative to the side wall of the link support plate 50. It is supported by the side wall. More specifically, a circular hole is formed in the lower end portion of each rear link 42, and an annular bush is fitted to the edge portion. A pivot pin P is fitted in the through hole of the bush. The pivot pin P fitted in the through hole of the bush is fixed to the side wall of the link support plate 50.

  As described above, the lower end portion of the rear link 42 is supported on the side wall of the link support plate 50 through the pivot pin P. The pivot pin P can slide on the inner peripheral surface of the bush attached to the lower end portion of the rear link 42. In other words, the rear link 42 is rotatable about the pivot pin P as a rotation axis.

  The front link 41 and the rear link 42 configured as described above rotate all at once around the rotation axis along the lateral width direction. At this time, each rotation link 40 rotates so as to rotate the sheet support plate 30. As a result, the sheet support plate 30 and the sheet 2 supported by the sheet support plate 30 are rotated in the same direction as the rotation direction of the rotation link 40, and thereby the sheet position (sheet height) is adjusted. become.

  Note that the front link 41 and the rear link 42 are attached to the link attachment portion 34 of the seat support plate 30 as described above. The link attachment portion 34 is disposed at the same position as the front portion 31 of the link attachment portion 34 (on both sides of the front portion 31). Further, the front portion 31 is located immediately below the occupant's buttocks in a state where the occupant is seated on the seat 2. In such a configuration, when the seat position is adjusted, the front part 31 on which the occupant's buttocks ride is moved in conjunction with the turning operation of the turning link 40. As a result, the sheet position is adjusted more efficiently (smoothly).

  The link support plate 50 supports the lower end portion of the rotation link 40 so that the rotation link 40 can rotate as described above. The link support plate 50 is disposed at a position below the seat support plate 30, more precisely at a position below the front portion 31.

  The base plate 52 is a base provided to fix the device 20 to a predetermined position (seat mounting position) of the vehicle body 3, and is located at the lowest position in the device 20. The base plate 52 is configured by bending a metal plate cut into a predetermined shape so as to have the shape shown in FIG. Further, a plurality of protruding portions protruding in a tongue shape or a rectangular shape are provided at an end portion of the base plate 52 in the horizontal width direction. Each protrusion is disposed so as to face a predetermined portion of the vehicle body 3 (specifically, a portion originally provided for attaching the seat 2). In addition, a screw hole is formed in each projecting portion, a screw is inserted into the screw hole, and a tip end portion of the screw is fastened to the vehicle body 3. Thereby, the entire device 20 including the base plate 52 is fixed to the vehicle body 3.

  The motor device 60 is a device that is driven to rotate the rotation link 40. The motor device 60 is supported by the link support plate 50 via two support rods (specifically, the front support rod 63 and the rear support rod 64). More specifically, the motor device 60 is fixed to one end of both ends of the front support rod 63, and the other end is bolted to the side wall (one of the pair of side walls) of the link support plate 50. Further, of the both ends of the rear support rod 64, one end is bolted to the side wall of the link support plate 50 (the side wall opposite to the side on which the front support rod 63 is fixed), and the motor device 60 is connected to the other end. It is fixed. Each of the side walls of the link support plate 50 is formed with a rod fixing hole 50a for fixing the support rod, as shown in FIG.

  As shown in FIG. 3, the motor device 60 includes a motor main body 61 and a transmission mechanism 62 for transmitting rotational energy of the motor main body 61. The transmission mechanism 62 has a gear train (not shown) that rotates as the motor body 61 rotates. The gear provided at the final stage of the gear train forms a pinion gear and meshes with the sector gear. The sector gear is provided on one of the pair of rear links 42, strictly speaking, is integrally formed with the rear link 42.

  When the motor main body 61 rotates, the meshing position of the pinion gear and the sector gear changes, and the rear link 42 rotates along with this, and the remaining rotating link (that is, the sector gear is connected). The rear link 42 paired with the provided rear link 42 and the two front links 41) rotate in the same direction.

<< Operation Example of Sheet Device 10 >>
Next, an operation example of the sheet apparatus 10 described above will be described. In the seat device 10, when the motor main body 61 of the motor device 60 rotates, the rotational energy is transmitted to the one rear link 42 by the transmission mechanism 62. Accordingly, the four rotation links 40 (that is, the two front links 41 and the two rear links 42) rotate integrally with the seat support plate 30. As a result, the sheet 2 supported by the sheet support plate 30 moves in the height direction, and as a result, the sheet position (sheet height) changes.

  Hereinafter, the movement operation of the seat 2 will be described in detail with reference to FIGS. 7 and 8. The sheet 2 moves within a range from the position illustrated in FIG. 7 to the position illustrated in FIG. In other words, the position of the sheet 2 is adjusted within the above range. Here, the position of the sheet 2 illustrated in FIG. 7 is the lowest position (the position on the lowest side) in the movement range of the sheet 2, and is hereinafter referred to as a first position. The position of the sheet 2 illustrated in FIG. 8 is the highest position (uppermost position) in the movement range of the sheet 2, and is hereinafter referred to as a second position. In the height direction, the second position is a position above the first position, in other words, a position farther from the ground on which the motorcycle 1 is grounded than the first position.

  Further, when the position of the seat 2 is in the first position, as shown in FIG. 7, each of the front link 41 and the rear link 42 is in a forward inclined state. On the other hand, when the position of the seat 2 is in the second position, the state of each of the front link 41 and the rear link 42 is more than that when the position of the seat 2 is in the first position, as shown in FIG. The forward tilt angle (tilt degree) is in a reduced state. That is, when the motor main body 61 rotates while the position of the seat 2 is at the first position, the respective rotation links 40 that are in the forward inclined state at that time start to rotate backward. As the position of the seat 2 moves from the first position to the second position, the forward tilt angle of each rotary link 40 gradually decreases. Strictly speaking, the state of each rotary link 40 gradually changes so that the forward tilt angle gradually decreases, so that the position of the seat 2 moves from the first position to the second position.

  As described above, in the present embodiment, the sheet 2 moves in conjunction with the rotation operation of the rotation link 40, and thereby the sheet position is adjusted. That is, in the present embodiment, the seat position can be adjusted with a relatively simple configuration (that is, the height link mechanism) using the rotation link 40.

  Further, when the seat 2 moves from the first position toward the second position by the turning operation of the turning link 40, the seat 2 rises obliquely rearward. That is, the second position is a position above the first position in the height direction and a position behind the first position in the front-rear direction. With such a movement path, when the seat 2 moves from the first position toward the second position, another member (specifically, a member disposed around the seat 2 such as the fuel tank T or the like). ) Can be suppressed.

  The moving direction when the sheet 2 moves from the first position toward the second position is not limited to the above-described direction (that is, the direction rising obliquely rearward), and may be another direction. Specifically, the second position may be a position above the first position in the height direction and may be set to a position ahead of the first position in the front-rear direction. In such a configuration (hereinafter referred to as a modified example), the rotation operation of the rotation link 40 (specifically, the state change of each rotation link 40 from the rearward tilt state to the front tilt state) is shown in FIGS. As shown, the seat 2 rises obliquely forward from the first position toward the second position. At this time, the seat 2 moves along the fuel tank T disposed obliquely above. With such a configuration, the space between the fuel tank T and the seat 2 can be narrowed, and the appearance of the seat can be improved. 14 and 15 are explanatory diagrams for adjusting the sheet position according to the modified example. FIG. 14 is a view when the sheet 2 is at the first position. FIG. 15 is a view when the sheet 2 is at the second position. FIG.

  When the sheet 2 is moved from the first position to the second position in the above moving direction, the device illustrated in FIGS. 16 and 17 (hereinafter, the device 120 according to the modification) is used. FIG. 16 is an exploded view of the device 120 according to the modification, and corresponds to FIG. FIG. 17 is a diagram illustrating a configuration in which the device 120 according to the modification is attached to the vehicle body, and corresponds to FIG. 4.

  Although the device 120 according to the modified example has some shape change due to a difference in the moving direction of the seat 2, for example, the sector gear is provided in the front link 41 instead of the rear link 42, basically, The configuration is the same as the configuration described above (the configuration in which the seat 2 rises obliquely rearward from the first position toward the second position). Each device constituting the device 120 according to the modification also has the same structure as that described above, except that the turning direction of the turning link 40 is reversed in the front-rear direction. For this reason, the components of the device 120 according to the modification illustrated in FIGS. 16 and 17 are denoted by the same reference numerals as the corresponding devices in the above-described configuration.

  By the way, when the seat 2 moves from the first position to the second position, the seat 2 is separated from the vehicle body 3 by a distance corresponding to the amount of deviation between the first position and the second position. That is, the gap between the seat 2 and the vehicle body 3 increases by an amount corresponding to the amount of deviation. If the gap between the seat 2 and the vehicle body 3 increases in this way, foreign matter may enter through the gap, or the inside of the vehicle body 3 may be seen through the gap and the appearance may be impaired.

  On the other hand, in this embodiment, when the clearance gap between the seat 2 and the vehicle body 3 increases, the structure which can block the said clearance gap is employ | adopted. Specifically, in the present embodiment, a gap closing material 70 is provided between the front end of the seat 2 and a member (for example, the fuel tank T) facing the front end. The gap plugging material 70 is a stretchable fabric, and is fastened to both the front end of the sheet 2 and a member facing it.

  Further, when the sheet 2 is in the first position, the gap plugging material 70 is disposed at a position (position indicated by a solid line in FIG. 9) sandwiched between the front end of the sheet 2 and a member facing the front end. . And if the sheet | seat 2 moves toward a 2nd position from a 1st position, the clearance gap between the front end of the sheet | seat 2 and the member facing this will increase in the front-back direction. At this time, the gap closing material 70 having stretchability extends in the front-rear direction and closes the gap as shown by the broken line in FIG. As a result, even if the gap is increased in the front-rear direction, it is possible to avoid problems caused by the gap by covering the increased gap.

  Furthermore, in this embodiment, as shown in FIG. 10, a cover plate 71 is attached to the side end (end surface in the lateral width direction) of the rear end portion of the sheet 2. The cover plate 71 covers a gap between the rear end portion of the sheet 2 and a member (for example, a cowl) positioned directly below the rear end portion in the height direction, and when the sheet 2 moves, Move together. Further, as shown in FIG. 11, the cover plate 71 is disposed such that the lower end of the cover plate 71 is located somewhat below the lower end of the rear end portion of the sheet 2 in the height direction. Further, when the seat 2 is in the first position, the cover plate 71 is disposed at a position straddling the rear end portion of the seat 2 and a member located immediately below the rear end portion in the height direction. In other words, when the seat 2 is in the first position, the lower end of the cover plate 71 is located somewhat below the upper end of a member (for example, a cowl) located immediately below the rear end portion of the seat 2. .

  On the other hand, when the sheet 2 moves from the first position toward the second position, the gap between the rear end portion of the sheet 2 and the member positioned immediately below the rear end portion increases in the height direction. At this time, the cover plate 71 rises together with the sheet 2, but the lower end of the cover plate 71 is still located below the upper end of the member located directly below the rear end portion of the sheet 2. That is, even when the seat 2 is in the second position, the cover plate 71 is in a position straddling the rear end portion of the seat 2 and a member (for example, a cowl) located immediately below the rear end portion in the height direction. . As a result, even if the gap between the rear end portion of the sheet 2 and the member positioned immediately below the rear end portion increases, the gap is covered by the cover plate 71 from the side. Thereby, even if said clearance gap increases in a height direction, the clearance gap after an increase can be covered, As a result, it becomes possible to avoid the malfunction which the said clearance gap brings. In particular, it is possible to prevent rainwater from entering through the gap during rainy weather.

  As a member for closing the gap between the seat 2 and the device located in front of the seat 2, a second cover plate (hereinafter referred to as the front cover plate 72) shown in FIG. 18 is used instead of the gap closing member 70 described above. ) May be used. FIG. 18 is a diagram illustrating the configuration of the seat 2 and its peripheral devices (specifically, the fuel tank T).

  The front cover plate 72 is disposed between the front end portion of the seat 2 and the fuel tank T located immediately before the seat 2. As shown in FIG. 18, the front cover plate 72 is bent in a substantially U shape, and is attached to the rear end portion of the fuel tank T. When the seat 2 is in the first position, the front cover plate 72 is located between the fuel tank T and the seat 2 in the front-rear direction. At this time, the front end portion of the seat 2 is adjacent to the front cover plate 72. That is, when the seat 2 is in the first position, the front end portion of the seat 2 is in a position overlapping the rear end portion of the fuel tank T in the vertical direction.

On the other hand, when the seat 2 moves from the first position toward the second position, the seat 2 rises, and accordingly, a gap between the front end portion of the seat 2 and the rear end portion of the fuel tank T increases. . Even when the seat 2 reaches the second position, the front end portion of the seat 2 is adjacent to the front cover plate 72 in the vertical direction. As a result, even when the seat 2 is in the second position, the front cover plate 72 closes the gap between the seat 2 and the fuel tank T in the vertical direction. As a result, even if the gap between the front end portion of the seat 2 and the rear end portion of the fuel tank T is increased, the increased gap can be covered by the front cover plate 72, and a problem caused by the gap is avoided. It becomes possible.
The front cover plate 72 rises obliquely rearward when the seat 2 goes from the first position to the second position, and rises obliquely forward when the seat 2 goes from the first position to the second position. It can be applied to any of the configurations.

<< Control Example of Sheet Device 10 >>
Next, a control example of the sheet apparatus 10 will be described. First, in describing an example of control of the sheet apparatus 10, a control mechanism used to control the sheet apparatus 10 will be described with reference to FIGS. 12 and 13.

  As shown in FIG. 12, the control mechanism includes an ECU (Electronic Control Unit) 80 as a controller. The ECU 80 is provided at a predetermined location of the vehicle body 3 and automatically controls the position of the seat 2 in accordance with the traveling speed of the motorcycle 1. More specifically, the ECU 80 controls the motor device 60 according to the traveling speed of the motorcycle 1. Thereby, the rotation direction and the rotation amount of the rotation link 40 are controlled, and as a result, the seat position (seat height) is adjusted to a position corresponding to the traveling speed of the motorcycle 1.

  More specifically, the control mechanism monitors the traveling speed of the motorcycle 1, and specifically includes a sensor 81 for detecting the traveling speed. When detecting the traveling speed, the sensor 81 outputs a signal corresponding to the detection result. When the ECU 80 receives the output signal from the sensor 81, the ECU 80 specifies the detection result of the sensor 81 (that is, the traveling speed of the motorcycle 1) from the signal.

  After the travel speed is identified, the ECU 80 compares the identified travel speed with a threshold value stored in advance in the ECU 80. Here, there are two types of threshold values, and one is a threshold value used when determining whether or not to perform an operation of moving the seat 2 toward the second position (lifting operation). This is called a use threshold. Another threshold value is a threshold value used when determining whether or not to perform an operation of moving the seat 2 toward the first position (lowering operation), and is hereinafter referred to as a deceleration threshold value.

  The above two threshold values will be described with an example. The running threshold value is set in the range of 70 to 90 km / h, and in this embodiment is set to 80 km / h. Further, the deceleration threshold is set in a range of 30 to 50 km / h, and in this embodiment is set to 40 km / h. Note that the running threshold and the deceleration threshold are not limited to the above values, and can be set to arbitrary values.

  Moreover, in this embodiment, each threshold value can be changed afterwards. More specifically, an input unit (not shown) is mounted at a predetermined location of the motorcycle 1, and when the input unit receives an operation of changing the threshold value by the occupant, the ECU 80 updates the threshold value to the value after the change. The In this way, if the threshold can be changed afterwards, the control conditions are set according to the preference of the user (occupant).

  The ECU 80 controls the motor device 60 according to the flow shown in FIG. More specifically, the motorcycle 1 is mounted on an operation panel (not shown), and this operation panel is provided with an operation switch 82 that is turned on and off by a passenger. The ECU 80 switches whether or not the seat position adjustment is executed according to whether the operation switch 82 is turned on or off. In the present embodiment, the ECU 80 controls the motor device 60 only when the operation switch 82 is on. That is, the sheet position adjustment is executed only when the operation switch 82 is on, and is not executed when the operation switch 82 is off. As described above, in the present embodiment, whether or not the seat position adjustment is performed can be freely switched by the operation of the operation switch 82, so that the occupant can specify whether or not the seat position adjustment is performed by his / her own intention. It becomes.

  When the operation switch 82 is on (Yes in S001), the ECU 80 controls the motor device 60 to adjust the seat position when the traveling speed is compared with each threshold value and a predetermined condition is satisfied. . More specifically, when the motorcycle 1 shifts from the stopped state to the traveling state, the ECU 80 specifies the traveling speed of the motorcycle 1 based on the output signal from the sensor 81 (S002). When the identified traveling speed becomes equal to or greater than the traveling threshold (Yes in S003), the ECU 80 controls the motor device 60 so that the seat 2 starts the ascending operation (S004). Thereby, the sheet 2 starts to move from the first position toward the second position. Then, the ECU 80 stops the motor device 60 when the seat 2 reaches the second position.

  On the other hand, when the motorcycle 1 decelerates, the ECU 80 identifies the traveling speed of the motorcycle 1 (S005), and when the identified traveling speed is equal to or lower than the deceleration threshold (Yes in S006), the seat 2 moves downward. The motor device 60 is controlled to start (S007). As a result, the sheet 2 moves from the second position toward the first position. In the present embodiment, the ECU 80 controls the motor device 60 so that the seat 2 reaches the first position when the traveling speed is reduced to a predetermined speed, strictly, when the motorcycle 1 stops.

1 Motorcycle (vehicle)
2 Seat 2a Seating surface 2b Bottom plate 2c Claw-shaped part (extension part)
2d Rear projection (extension part)
2e Fixed part 3 Car body 10 Seat device 20 Device (position adjustment device)
30 Sheet support plate (support member)
31 Front part 31a Upper surface (flat surface)
32 Rear part 32a Upper surface (inclined surface)
33 Adjacent part 34 Link attachment part 35 Fixing part 36 L-shaped part 37 Front side engagement part (engagement part)
38 Rear engagement part (engagement part)
40 rotation link 41 front link 42 rear link 43 front connection pipe 44 rear connection pipe 50 link support plate 50a rod fixing hole 52 base plate 60 motor device 61 motor body 62 transmission mechanism 63 front support rod 64 rear support rod 70 gap Closing material 71 Cover plate 72 Front cover plate 80 ECU
81 sensor 82 operation switch 120 device according to modification (position adjusting device)
P Pivot pin R Rubber mount (elastic member)
T Fuel tank

Claims (11)

A saddle-type seat on which a vehicle occupant sits;
A position adjusting device that adjusts the position of the seat in the height direction of the vehicle,
The position adjusting device includes: a plate-like support member that supports the sheet in a state where the sheet is placed; and a rotation link that rotates integrally with the support member when the position of the sheet is adjusted. Have
The support member includes a front portion positioned immediately below the buttock of the occupant when the occupant sits on the seat, and a rear portion positioned rearward of the front portion in the front-rear direction of the vehicle. ,
The pivot link has a front link and a rear link provided at different positions in the front-rear direction,
The front link and the rear link are attached to the front part,
The seat device according to claim 1, wherein a width of the front portion in the width direction of the vehicle is shorter than a width of the rear portion in the width direction. The sheet has a bottom plate that forms a bottom,
The bottom plate includes a claw-like portion extending in a claw shape and two fixed portions to be fixed to the support member,
The front end portion of the support member is provided with a front engagement portion that engages with the claw-shaped portion,
The seat device according to claim 1, wherein two fixing portions formed to fix the fixed portion are provided at a rear end portion of the support member.   The fixed part is fixed to each of the fixed parts via an elastic member for suppressing vibration from being transmitted from the vehicle body of the vehicle to the seat. Sheet equipment. The sheet has a bottom plate that forms a bottom,
The bottom plate has a plurality of extending portions extending so as to protrude,
The engagement member that engages with the extension part is formed in the support member at the same position as the extension part at different positions in the front-rear direction. The sheet apparatus according to any one of claims. The seat has a seating surface;
The end surface of the front portion closer to the seating surface in the height direction is a flat surface,
5. The end face of the rear portion closer to the seating surface in the height direction is an inclined surface that is inclined so as to approach the seating surface as it goes rearward. The sheet apparatus according to one item.   The sheet apparatus according to claim 5, wherein the flat surface is a plane whose normal direction is the height direction. The support member has an adjacent portion adjacent to the front portion on the front side of the front portion in the front-rear direction;
The seat device according to claim 5 or 6, wherein the adjacent portion is inclined so as to approach the seating surface as it goes forward in the front-rear direction. The position of the sheet is adjusted within a range from the first position to the second position,
In the height direction, the second position is a position farther from the ground on which the vehicle is grounded than the first position.
The degree of inclination of each of the front side link and the rear side link changes as the position of the seat moves from the first position to the second position. The sheet apparatus as described.   The seat device according to claim 8, wherein the second position is a rear position with respect to the first position in the front-rear direction.   The seat device according to claim 8, wherein the second position is a front position with respect to the first position in the front-rear direction. The position adjusting device is an integrated unit of the position adjusting device including the support member and the pivot link, and is attached in a detachable manner to the vehicle body of the vehicle. The sheet apparatus according to claim 1, wherein

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