Vehicle seat and vehicle

Abstract

To provide a vehicle seat which can change a seat position to a desired position with simple configuration.SOLUTION: A vehicle seat 100 comprises: a seat cushion 110; a seat back 120; and a support part 20 which so supports the seat cushion 110 as to be movable in a cross direction and a vertical direction with respect to a floor 1. The support part 20 has: a lower member 21 supported on the floor 1; an intermediate member 22 which is movably supported along an inclined plane by the lower member 21; and an upper member 23 which is movably supported along the inclined plane by the intermediate member 22. The seat cushion 110 is supported by the upper member 23.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat and a vehicle. [Background technology]

[0002] Conventionally, there has been known a vehicle seat that allows the seat height to be changed using a simple configuration without using a height mechanism (see, for example, Patent Document 1). In Patent Document 1, an inclined rail with an upward slope is arranged below the seat cushion toward the rear, and the seat cushion is supported along the inclined rail so that it can move from a driving position at the front to a rest position at the rear. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2001-509755 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in a configuration in which the seat cushion is supported slidably along a single inclined rail as described in Patent Document 1 above, the fore-and-aft position of the seat is simultaneously changed when the seat height is changed, making it difficult to change the position of the seat to the desired position. [Means for solving the problem]

[0005] A vehicle seat according to one aspect of the present invention includes a seat cushion extending substantially horizontally in the width and length directions, among which the width, length, and height directions are orthogonal to one another, a seat back supported at one longitudinal end of the seat cushion, and a support portion supporting the seat cushion movably in the length and height directions relative to a base portion. The support portion includes a first member supported at the base portion, a second member movably supported on the first member along a first inclined surface extending obliquely in the length and height directions, and a third member movably supported on the second member along a second inclined surface extending obliquely in the length and height directions, and the seat cushion is supported by the third member.

[0006] Another aspect of the present invention is a vehicle having the vehicle seat described above, which has a floor that extends substantially horizontally, and the support portion is disposed below the floor. [Effects of the Invention]

[0007] According to the present invention, the position of a vehicle seat can be changed to various positions in the front-rear and up-down directions with a simple configuration. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a side view showing a schematic configuration of a vehicle seat according to an embodiment of the present invention; [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] 2 is a perspective view schematically showing the main configuration of a lower slide mechanism included in the support unit of FIG. 1. FIG. [Figure 4A] FIG. 2 is a side view schematically showing the configuration of the support part in FIG. 1. [Figure 4B] FIG. 4B is a diagram showing a modification of FIG. 4A. [Figure 5A] FIG. 10 is a side view schematically showing a configuration in which a pair of inclined surfaces of the support part have an upward slope toward the rear. [Figure 5B] FIG. 10 is a side view schematically showing a configuration in which a pair of inclined surfaces of the support portion slope downward toward the rear. [Figure 6]1 is a block diagram showing the configuration of a seat control device that controls the operation of a vehicle seat according to an embodiment of the present invention; [Figure 7A] FIG. 2 is a side view of an example vehicle seat in a raised position. [Figure 7B] FIG. 1 is a side view of an example vehicle seat in a lowered position. [Figure 7C] FIG. 1 is a plan view showing the seat arrangement of a vehicle equipped with a rotating seat. [Figure 8] FIG. 1 is a side view of an example vehicle seat in a relaxed position. [Figure 9A] 1 is a side view showing an example of vehicle seats arranged in two rows, front and rear, with each row in its normal position; FIG. [Figure 9B] 1 is a side view showing an example of vehicle seats arranged in two rows, front and rear, with each row in a relaxed position; FIG. [Figure 10] 1 is a side view showing a schematic configuration of a main part of a vehicle according to an embodiment of the present invention; [Figure 11] 1 is a front view showing a schematic configuration of a main part of a vehicle according to an embodiment of the present invention; [Figure 12] 11 is a plan view showing an example of a lid for covering the opening of the recess in FIG. 10. FIG. [Figure 13] FIG. 11 is a diagram showing a modification of FIG. 10 . [Figure 14] FIG. 12 is a diagram showing a modification of FIG. [Figure 15] 15 is a diagram showing the vehicle seat of FIGS. 13 and 14 with an increased cyber angle; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present invention will be described with reference to Figs. 1 to 9B. A vehicle seat according to an embodiment of the present invention can be applied to various types of vehicles. Below, an example in which the vehicle seat is applied to a vehicle as a vehicle seat will be described. A vehicle seat may also be simply referred to as a seat.

[0010] Fig. 1 is a side view showing the schematic configuration of a vehicle seat (seat) 100 according to an embodiment of the present invention, and Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. In the following, the front-to-rear direction (length direction), left-to-right direction (width direction), and up-to-down direction (height direction) are defined as shown in the figure, and the configuration of each part will be described according to these definitions. Fig. 1 also shows an occupant in a riding position.

[0011] As shown in Figures 1 and 2, the seat 100 includes a seat cushion 110 that supports the occupant's buttocks, a seat back 120 that supports the occupant's back, a headrest 130 that is provided on the upper part of the seat back 120 and supports the occupant's head, and a support part 20 that supports the seat cushion 110 so that it can move up and down and back and forth from the floor 1.

[0012] The seat cushion 110 extends in the front-rear and left-right directions, i.e., extends substantially horizontally, and has a generally rectangular shape in a plan view. The seat cushion 110 has a seat cushion frame 111 (FIG. 2) that forms the skeleton of the seat cushion 110. Although detailed illustration is omitted, the seat cushion frame 111 has, for example, a pair of left and right vertical frames 111a extending in the front-rear direction, and a pair of front and rear horizontal frames that also extend in the left-right direction and connect the front ends and rear ends of the pair of left and right vertical frames, respectively, and the entire seat cushion has a generally rectangular frame shape in a plan view.

[0013] A substantially plate-shaped pressure-receiving member (not shown) is disposed inside the seat cushion frame 111. A resilient cushion pad 112 made of, for example, urethane foam material is provided around the seat cushion frame 111, and the surface of the cushion pad 112 is covered with a cover 113. A seating surface 114 on which an occupant sits is formed on the upper surface of the seat cushion 110. As shown in FIG. 1, an ottoman 140 is provided at the front end of the seat cushion 110 so as to be rotatable up and down around a shaft 141 extending in the left-right direction as a fulcrum.

[0014] The seat back 120 has a seat back frame 121 (only a part of which is shown in FIG. 2) that forms the framework of the seat back 120. Although detailed illustration is omitted, the seat back frame 121 has, for example, a pair of left and right vertical frames that extend in a substantially vertical direction, and a pair of upper and lower horizontal frames that also extend in the left and right direction and connect the upper ends and lower ends of the pair of left and right vertical frames, respectively, and has an overall substantially rectangular frame shape when viewed from the front.

[0015] A substantially plate-shaped pressure-receiving member (not shown) is disposed inside the seatback frame 121. A resilient back pad 122 made of, for example, urethane foam material is provided around the seatback frame 121, and the surface of the back pad 122 is covered with a cover 123. A seating surface 124 on which an occupant sits is formed on the front of the seatback 120. The lower end of the seatback 120 is pivotally supported on the rear end of the seat cushion frame 111 via a reclining mechanism 150 so as to be rotatable in the front-rear direction around a shaft 151 extending in the left-right direction as a fulcrum.

[0016] The support part 20 has three members arranged one on top of the other in the vertical direction, namely, a lower member 21, an intermediate member 22, and an upper member 23. The lower member 21 is mounted on the upper surface of the floor 1 so as to be movable in the front-rear direction. The intermediate member 22 is mounted on the upper surface of the lower member 21 so as to be movable in the front-rear direction. The upper member 23 is mounted on the upper surface of the intermediate member 22 so as to be movable in the front-rear direction. A bottom surface 110a of the seat cushion 110 (seat cushion frame 111) is fixed to the upper surface of the upper member 23.

[0017] 2, the lower member 21 has a pair of left and right lower frames 210, 210 extending in the front-rear direction, and a connecting frame 211 extending in the left-right direction and connecting the left and right lower frames 210, 210. The intermediate member 22 has a pair of left and right intermediate frames 220, 220 extending in the front-rear direction, and a connecting frame 221 extending in the left-right direction and connecting the left and right intermediate frames 220, 220. The upper member 23 has a pair of left and right upper frames 230, 230 extending in the front-rear direction, and a connecting frame 231 extending in the left-right direction and connecting the left and right upper frames 230, 230.

[0018] The pair of left and right upper frames 230, 230 are located laterally inward of the pair of left and right lower frames 210, 210. The intermediate frame 220 extends in the left and right direction from the inner end face in the left and right direction of the upper frame 230 to the outer end face in the left and right direction of the lower frame 210. As shown in Fig. 1, the length of the intermediate member 22 in the front-rear direction is shorter than the length of the lower member 21 in the front-rear direction and is also shorter than the length of the upper member 23 in the front-rear direction.

[0019] As shown in Figures 1 and 2, a pair of left and right lower rails 11, 11 extending in the front-rear direction are provided on the upper surface of the floor 1. An upper rail 212 is provided on the bottom surface of the lower frame 210 from its front end surface to its rear end surface, corresponding to the lower rails 11. The lower rail 11 has a generally U-shaped cross section facing upward, and the upper rail 212 has a generally U-shaped cross section facing downward. The upper rail 212 is engaged with the lower rail 11 so as to be slidable in the front-rear direction. The lower rail 11 and the upper rail 212 constitute a lower slide mechanism 20A.

[0020] A lower rail 213 is provided on the upper surface of the lower frame 210, extending in the front-rear direction from its front end surface to its rear end surface. The lower rail 213 can also extend in the front-rear direction beyond the front end surface or beyond the rear end surface of the lower frame 210. An upper rail 222 is provided on the bottom surface of the intermediate frame 220, extending from its front end surface to its rear end surface, corresponding to the lower rail 213. The lower rail 213 has a generally U-shaped cross section facing upward, and the upper rail 222 has a generally U-shaped cross section facing downward. The upper rail 222 is engaged with the lower rail 13 so as to be slidable in the front-rear direction. The lower rail 213 and the upper rail 222 constitute an intermediate slide mechanism 20B. The lower rail 213 is longer than the upper rail 222.

[0021] A lower rail 223 is provided on the upper surface of the intermediate frame 220, extending in the front-rear direction from its front end surface to its rear end surface. An upper rail 232 is provided on the bottom surface of the upper frame 230, corresponding to the lower rail 223, from its front end surface to its rear end surface. The lower rail 223 has a generally U-shaped cross section facing upward, and the upper rail 232 has a generally U-shaped cross section facing downward. The upper rail 232 is engaged with the lower rail 223 so as to be slidable in the front-rear direction. The lower rail 223 and the upper rail 232 constitute an upper slide mechanism 20C. The upper rail 232 is longer than the lower rail 223.

[0022] The lower sliding mechanism 20A, the intermediate sliding mechanism 20B, and the upper sliding mechanism 20C each include an electric motor, and are driven by the electric motor to slide each component in the front-to-rear direction. More specifically, as shown in Fig. 2, the lower sliding mechanism 20A has an electric motor 215 attached to the connecting frame 211 of the lower member 21. The intermediate sliding mechanism 20B has an electric motor 225 attached to the connecting frame 221 of the intermediate member 22. The upper sliding mechanism 20C has an electric motor 235 attached to the connecting frame 231 of the upper member 23.

[0023] Fig. 3 is a perspective view schematically showing the main configuration of the lower slide mechanism 20A. For convenience, the lower rails 11 and the upper rails 212 are not shown in Fig. 3. As shown in Fig. 3, a pair of left and right output shafts protruding from the electric motor 215 on the left and right sides are connected to shafts 216 extending in the left-right direction. A screw shaft 217 extending in the front-rear direction is rotatably supported inside the left and right upper rails 212 (not shown). The outer left and right ends of the shaft 216 and the front end of the screw shaft 217 are connected to a gear box 218.

[0024] The gearbox 218 has a worm gear built in, and the rotation of the shaft 216 is transmitted to the screw shaft 217 via the worm gear. A nut 219 is fixed to the lower rail 11. The screw shaft 217 passes through the nut 219 and is screwed into the nut 219. The electric motor 215 can rotate forward and backward, and when driven by the electric motor 215, the screw shaft 217 rotates in one direction or the opposite direction, causing the screw shaft 217 to move in the front-to-rear direction relative to the nut 219. In other words, the screw shaft 217 moves in the front-to-rear direction together with the upper rail 212 relative to the lower rail 11. As a result, the lower member 21 slides in the front-to-rear direction relative to the floor 1.

[0025] Although not shown in the figures, the intermediate slide mechanism 20B and the upper slide mechanism 20C are configured similarly to the lower slide mechanism 20A. The electric motor 225 is rotatable forward and reverse, and when driven by the electric motor 225, the intermediate member 22 slides in the front-rear direction relative to the lower member 21. In addition, the electric motor 235 is rotatable forward and reverse, and when driven by the electric motor 235, the upper member 23 slides in the front-rear direction together with the seat cushion 110 relative to the intermediate member 22.

[0026] As shown in FIG. 1 , the intermediate slide mechanism 20B and the upper slide mechanism 20C are formed to be inclined at a predetermined angle with respect to the horizontal plane. More specifically, the lower rail 213 and the upper rail 222 of the intermediate slide mechanism 20B extend at a downward incline toward the rear. This allows the intermediate member 22 to move forward and upward relative to the lower member 21, or rearward and downward relative to the lower member 21. On the other hand, the lower rail 223 and the upper rail 232 of the upper slide mechanism 20C extend at an upward incline toward the rear. This allows the upper member 23 to move forward and downward relative to the intermediate member 22, or rearward and upward relative to the intermediate member 22.

[0027] 4A is a side view schematically illustrating the configuration of the support portion 20 between the floor 1 and the bottom surface 110a of the seat cushion 110. In FIG. 4A, the inclined surface SF1 extending along the middle slide mechanism 20B and the inclined surface SF2 extending along the upper slide mechanism 20C are highlighted. As shown in FIG. 4A, the inclined surface SF1 slopes downward toward the rear, and the inclined surface SF2 slopes upward toward the rear.

[0028] Although the inclined surfaces SF1 and SF2 extend in different directions, the angle that the inclined surface SF1 makes with respect to the horizontal plane (inclination angle α1) and the angle that the inclined surface SF2 makes with respect to the horizontal plane (inclination angle α2) are the same or nearly the same. Therefore, the inclined surfaces SF1 and SF2 are in a symmetrical or nearly symmetrical positional relationship (plane-symmetrical positional relationship) with respect to a reference line CL1 that passes through the middle of the inclined surfaces SF1 and SF2 and extends in the front-to-rear direction. The magnitudes of the inclined angles α1 and α2 may be different. That is, α1 may be greater than α2, or α1 may be smaller than α2.

[0029] FIG. 4B shows a modified example of FIG. 4A. In FIG. 4B, in contrast to FIG. 4A, the inclined surface SF1 extending along the middle slide mechanism 20B slopes upward toward the rear, while the inclined surface SF2 extending along the upper slide mechanism 20C slopes downward toward the rear. Although the directions of extension of the inclined surfaces SF1 and SF2 are different, the angle of the inclined surface SF1 relative to the horizontal plane (inclination angle α1) and the angle of the inclined surface SF2 relative to the horizontal plane (inclination angle α2) are the same or nearly the same. Therefore, the inclined surfaces SF1 and SF2 are symmetrical or nearly symmetrical with respect to the reference line CL1 (plane-symmetrical positional relationship). The inclination angles α1 and α2 may be different. That is, α1 may be greater than α2, or α1 may be smaller than α2.

[0030] In Figures 4A and 4B, one of the inclined surfaces SF1 and SF2 slopes downward and the other upward toward the rear. That is, the slopes of the inclined surfaces SF1 and SF2 are opposite to each other, but the slopes of the inclined surfaces SF1 and SF2 may be the same. Figures 5A and 5B show an example. In Figure 5A, both the inclined surfaces SF1 and SF2 extend upward toward the rear. In Figure 5B, both the inclined surfaces SF1 and SF2 extend downward toward the rear.

[0031] In Figure 5A, the inclination angle α1 of inclined surface SF1 and the inclination angle α2 of inclined surface SF2 relative to the horizontal plane are equal, and inclined surface SF1 and inclined surface SF2 are parallel. Similarly, in Figure 5B, the inclination angle α1 and the inclination angle α2 are equal, and inclined surface SF1 and inclined surface SF2 are parallel. In Figures 5A and 5B, the inclination angle α1 and the inclination angle α2 may be different. That is, α1 may be greater than α2, or α1 may be smaller than α2.

[0032] Fig. 6 is a block diagram showing the configuration of a seat control device 101 that controls the operation of the seat 100. As shown in Fig. 6, the seat control device 101 has an ECU 102, an operation unit 103 and electric motors 215, 225, 235, 145, and 155 that are connected to the ECU 102. A signal from the operation unit 103 is input to the ECU 102. Although not shown in the figure, signals from position sensors that detect the current positions of the seat 100 in the front-rear direction and the up-down direction are also input to the ECU 102.

[0033] Various position sensors can be used, such as a linear encoder, a magnetic sensor (Hall sensor), an optical encoder, a potentiometer (variable resistor), a limit switch, etc. A sensor that detects the amount of rotation of the electric motors 215, 225, and 235 can also be used as the position sensor. The operation unit 103 has a forward / backward command switch 103a that commands forward / backward movement of the seat 100, an up / down command switch 103b that commands up / down movement, and a mode selection switch 103c that selects the seat mode of the seat 100.

[0034] The seat mode includes a normal mode and a relax mode. FIG. 1 shows an example of the normal mode, in which the seat 100 is in a normal position (also called a normal posture). The normal mode is a seat mode in which the occupant assumes a standard riding posture (normal posture). In the normal mode, the angle of the seat back 120 relative to the horizontal line (seat back tilt angle) is greater than a predetermined angle, and the occupant's face faces forward. The ottoman 140 remains stored, and the occupant's feet rest on the upper surface of the floor 1. In the relax mode, the seat back tilt angle is smaller than a predetermined angle, and the occupant's face faces diagonally upward. The ottoman 140 rotates upward, and the occupant's feet are lifted off the floor 1.

[0035] Although not shown in the figures, the length of the ottoman 140 in the left-right direction is shorter than the distance between the left and right lower frames 210, 210. For example, the right end face of the ottoman 140 is located to the left of the left end face of the right lower frame 210, and the left end face of the ottoman 140 is located to the right of the right end face of the left lower frame 210. This prevents the ottoman 140 and the lower frame 210 from coming into contact with each other. Note that the length of the ottoman 140 in the left-right direction may be longer than the distance between the left and right lower frames 210, 210.

[0036] 6 is a motor for driving a lower member constituting the lower slide mechanism 20A. Electric motor 225 is a motor for driving an intermediate member constituting the intermediate slide mechanism 20B. Electric motor 235 is a motor for driving an upper member constituting the upper slide mechanism 20C. Electric motor 145 is an ottoman driving motor provided on shaft 141 of ottoman 140, and the ottoman 140 is rotated up and down by driving electric motor 145. Electric motor 155 is a seatback tilting motor provided on shaft 151 of reclining mechanism 150, and the seatback 120 is rotated forward and backward by driving electric motor 155. ECU 102 controls electric motors 215, 225, 235, 145, and 155 based on signals from the position sensors so that the seat position detected by the position sensors becomes the target position according to a command from operation unit 103.

[0037] The seat 100 according to this embodiment can change its seat position from the normal position shown in Fig. 1 to various positions by driving electric motors 215, 225, 235, 145, and 155. Fig. 7A is a side view showing an example of the seat 100 positioned in a raised position higher than the normal position. When an occupant operates the up / down command switch 103b to command the seat 100 to rise, the seat 100 is raised by driving the electric motors 225 and 235 to the raised position.

[0038] Specifically, as shown in Fig. 7A, the intermediate member 22 moves forward relative to the lower member 21 along the intermediate slide mechanism 20B. Furthermore, the upper member 23 moves rearward relative to the intermediate member 22 along the upper slide mechanism 20C. As a result, the positions of the front end faces of the lower member 21, the intermediate member 22, and the upper member 23 coincide or nearly coincide. At this time, the ECU 102 simultaneously drives the electric motors 225, 235 so that the seat 100 rises while the position of the seat 100 in the fore-aft direction remains unchanged. As a result, the seat cushion 110 rises to its maximum while the position of the seat 100 in the fore-aft direction remains the same as the normal position.

[0039] 7B is a side view showing an example of the seat 100 in a lowered position lower than the normal position. When an occupant operates the up / down command switch 103b to command the lowering of the seat 100, the seat 100 is lowered by the driving of the electric motors 225, 235 to the lowered position.

[0040] Specifically, as shown in Figure 7B, the intermediate member 22 moves rearward relative to the lower member 21 along the intermediate slide mechanism 20B. Furthermore, the upper member 23 moves forward relative to the intermediate member 22 along the upper slide mechanism 20C. Therefore, the positions of the rear end surfaces of the lower member 21, the intermediate member 22, and the upper member 23 coincide or nearly coincide. At this time, the ECU 102 simultaneously drives the electric motors 225, 235 so that the seat 100 rises while the position of the seat 100 in the fore-aft direction remains unchanged. As a result, the seat cushion 110 is lowered to the maximum while the position of the seat 100 in the fore-aft direction remains the same as the normal position.

[0041] In the lowered position, the front end of the lower member 21 and the front end of the upper member 23 are closest to each other. However, as shown in Fig. 2, the upper member 23 is positioned inside the lower member 21 in the left-right direction. Therefore, in the lowered position, the lower end of the front end of the upper member 23 can be lowered below the upper end of the front end of the lower member 21 without the lower member 21 and the upper member 23 interfering with each other.

[0042] 7C is a side view showing an example of the seat 100 when it is in a forward position that is moved forward from the normal position. When the occupant operates the forward / backward command switch 103a to command the seat 100 to move forward, the seat 100 moves forward by the drive of the electric motors 225, 235 and assumes the forward position.

[0043] Specifically, as shown in Fig. 6C, the intermediate member 22 moves forward relative to the lower member 21 along the intermediate slide mechanism 20B. Furthermore, the upper member 23 moves forward relative to the intermediate member 22 along the upper slide mechanism 20C. As a result, the positions of the front end faces of the lower member 21 and the intermediate member 22 coincide or nearly coincide, and the positions of the rear end faces of the intermediate member 22 and the upper member 23 coincide or nearly coincide. At this time, the ECU 102 simultaneously drives the electric motors 225, 235 so that the seat 100 moves forward while the vertical position of the seat 100 remains unchanged. As a result, the seat cushion 110 moves forward to the maximum extent while the vertical position of the seat 100 remains the same as the normal position.

[0044] 8 is a side view showing an example of the state of the seat 100 in the relaxation mode, that is, when the seat 100 is in the relaxation position (also called the relaxation posture). When the occupant operates the mode selection switch 103c to command the relaxation mode, the seat 100 moves rearward by the drive of the electric motors 225, 235. Furthermore, the seat back 120 is tilted rearward by the drive of the electric motor 155, and the ottoman 140 is rotated upward by the drive of the electric motor 145, and the seat 100 moves to the relaxation position.

[0045] Specifically, as shown in FIG. 8 , the intermediate member 22 moves rearward relative to the lower member 21 along the intermediate slide mechanism 20B. Furthermore, the upper member 23 moves rearward relative to the intermediate member 22 along the upper slide mechanism 20C. As a result, the positions of the rear end faces of the lower member 21 and the intermediate member 22 coincide or nearly coincide, and the positions of the front end faces of the intermediate member 22 and the upper member 23 coincide or nearly coincide. At this time, the ECU 102 simultaneously drives the electric motors 225, 235 so that the seat 100 moves backward while the vertical position of the seat 100 remains unchanged. As a result, the seat cushion 110 moves rearward to the maximum extent, with the vertical position of the seat 100 remaining the same as the normal position, and the seat 100 reaches a retracted position that is further rearward than the normal position.

[0046] Furthermore, in the relaxed position, the ECU drives the electric motors 145, 155 so that the seat back 120 rotates rearward via the reclining mechanism 150 and the ottoman 140 rotates upward. As a result, the occupant's feet are lifted off the floor 1, and the occupant assumes a relaxed position. At this time, the front end of the lower member 21 is positioned forward of the front end of the seat cushion 110, but the occupant's feet are supported by the ottoman 140 and positioned above the lower member 21. This prevents the occupant's feet from coming into contact with the lower member 21.

[0047] 9A and 9B are side views showing an example in which seats 100 are arranged in two rows, i.e., a front row seat 100F and a rear row seat 100R. In FIG. 9A, the occupant is in a normal position, and in FIG. 9B, the occupant is in a relaxed position. In FIGS. 9A and 9B, similar to FIG. 5A, the intermediate sliding mechanism 20B (inclined surface SF1) and the upper sliding mechanism 20C (inclined surface SF2) of the front row seat 100F each extend rearward at an upward slope. Similarly to FIG. 5B, the intermediate sliding mechanism 20B (inclined surface SF1) and the upper sliding mechanism 20C (inclined surface SF2) of the rear row seat 100R each extend rearward at a downward slope.

[0048] When an occupant of each seat 100F, 100R operates the mode selection switch 103c to command the normal mode, the ECU 102 controls each seat 100F, 100R to the normal posture (normal position). As shown in Fig. 9A, in the normal posture, the rear end surface of the lower member 21 and the rear end surface of the upper member 23 are positioned at the same position, and the rear end surface of the intermediate member 22 is positioned forward of the rear end surfaces of the lower member 21 and the upper member 23. In this state, the feet of the occupant of the rear row seat 100R are positioned rearward of the rear end portion of the support portion 20 (rear end portion of the lower member 21) of the front row seat 100F.

[0049] On the other hand, when the occupants of the seats 100F, 100R operate the mode selection switches 103c to command the relaxation mode, the ECU 102 controls the seats 100F, 100R to the relaxation posture (relaxation position). As shown in FIG. 8B , in the relaxation posture, the intermediate member 22 of the front seat 100F is moved rearward as far as possible along the intermediate slide mechanism 20B by the drive of the electric motor 225. The upper member 23 of the front seat 100F is moved rearward as far as possible along the upper slide mechanism 20C by the drive of the electric motor 235. As a result, the front seat 100F reaches a retracted position in which the seat cushion 110 has moved rearward as far as possible. At this time, a space SPa is formed behind the lower member 21 and intermediate member 22 of the front seat 100F and behind the seat cushion 110.

[0050] Furthermore, the seatback 120 of the front seat 100F is tilted backward by the drive of the electric motor 155, and the ottoman 140 is rotated upward by the drive of the electric motor 145, so that the front seat 100F assumes a relaxed position. When transitioning from the normal position to the relaxed position, the ECU 102 simultaneously drives the electric motors 145, 155, 225, and 235 to tilt the seatback 120 backward and rotate the ottoman 140 upward while moving the seat cushion 110 backward. This allows the front seat 100F to be moved to the relaxed position in a short time.

[0051] Instead of simultaneously driving the electric motors 145, 155, 225, and 235, for example, the seat back 120 may be tilted and the ottoman 140 may be rotated after the seat cushion 110 has moved to the rearward position. That is, the electric motors 145 and 155 may be driven after the electric motors 225 and 235 have been driven. The electric motor 145 may be driven first to lift the occupant's feet, and then the electric motors 225 and 235 may be driven to move the seat cushion 110 rearward.

[0052] The rear seat 100R also moves to a relaxed position in the same manner as the front seat 100F. That is, the intermediate member 22 of the rear seat 100R moves rearward to its maximum extent along the intermediate slide mechanism 20B by driving the electric motor 225. The upper member 23 of the rear seat 100R moves rearward to its maximum extent along the upper slide mechanism 20C by driving the electric motor 235. As a result, the rear seat 100R reaches a rearward position where the seat cushion 110 has moved rearward to its maximum extent.

[0053] Furthermore, the seat back 120 of the rear row seat 100R is tilted backward by driving the electric motor 155, and the ottoman 140 is rotated upward by driving the electric motor 145, so that the rear row seat 100R assumes a relaxed position. When transitioning from the normal position to the relaxed position, the ECU 102 simultaneously drives the electric motors 145, 155, 225, and 235 to tilt the seat back 120 backward and rotate the ottoman 140 upward while moving the seat cushion 110 backward. Instead of simultaneously driving the electric motors 145, 155, 225, and 235, for example, the electric motor 145 may be driven first to lift the occupant's feet upward, and then the electric motors 225 and 235 may be driven to move the seat cushion 110 backward.

[0054] When the front seat 100F and the rear seat 100R are in a relaxed position, the seat cushion 110 of the rear seat 100R is positioned lower than the seat cushion 110 of the front seat 100F. At this time, the feet of the occupant of the rear seat 100R are placed in the space SPa behind the front seat 100F. This allows the occupant of the rear seat 100R to assume an optimal relaxed position without the feet of the occupant of the rear seat 100R coming into contact with the front seat 100F.

[0055] The ECU 102 may coordinate control of the front seat 100F and the rear seat 100R when the front seat 100F and the rear seat 100R transition from the normal position to the relaxed position. For example, the ECU 102 may start transitioning the front seat 100F to the relaxed position after the rear seat 100R has completed transitioning to the relaxed position. This prevents the feet of the occupant in the rear seat 100R from coming into contact with the front seat 100F when the front seat 100F moves. It also reduces the risk of the occupant in the rear seat 100R feeling a sense of pressure due to the movement of the front seat 100F.

[0056] According to this embodiment, the following effects can be achieved. (1) A vehicle seat (seat) 100 includes a seat cushion 110 extending horizontally in the left-right direction (width direction) and the front-rear direction (length direction), a seat back 120 supported at the rear end (one end in the length direction) of the seat cushion 110 and extending vertically (height direction), and a support portion 20 supporting the seat cushion 110 so as to be movable in the front-rear direction and vertically relative to a floor 1 (FIGS. 1 and 2). The support portion 20 includes a lower member 21 supported by the floor 1, an intermediate member 22 supported on the lower member 21 so as to be movable along an inclined surface SF1 extending obliquely in the front-rear direction and vertically, and an upper member 23 supported on the intermediate member 22 so as to be movable along an inclined surface SF2 extending obliquely in the front-rear direction and vertically (FIGS. 4A, 4B, 5A, and 5B). The seat cushion 110 is supported by the upper member 23 (FIG. 1).

[0057] As a result, the intermediate member 22 is movable along the inclined surface SF1 relative to the lower member 21 in the front-rear direction and up-down direction, and the upper member 23 is movable along the inclined surface SF2 relative to the intermediate member 22. Therefore, by combining the movement of the intermediate member 22 along the inclined surface SF1 and the movement of the upper member 23 along the inclined surface SF2, the position of the seat 100 can be changed to various positions in the front-rear direction and up-down direction. A height mechanism (e.g., a link mechanism) for changing the seat height is not required, and with a simple configuration in which the intermediate member 22 and the upper member 23 are provided so as to be movable along the pair of inclined surfaces SF1 and SF2, not only the position in the front-rear direction but also the height of the seat 100 can be changed.

[0058] (2) The support portion 20 has an intermediate slide mechanism 20B that supports the intermediate member 22 from the lower member 21 so that it can slide along the inclined surface SF1, and an upper slide mechanism 20C that supports the upper member 23 from the intermediate member 22 so that it can slide along the inclined surface SF2 ( FIGS. 1 and 2 ). The intermediate slide mechanism 20B has a lower rail 213 provided on the upper surface of the lower member 21 and an upper rail 222 that is provided on the lower surface of the intermediate member 22 and engages with the lower rail 213 ( FIGS. 1 and 2 ). The upper slide mechanism 20C has a lower rail 223 provided on the upper surface of the intermediate member 22 and an upper rail 232 that is provided on the lower surface of the upper member 23 and engages with the lower rail 223 ( FIGS. 1 and 2 ). This allows the intermediate member 22 and the upper member 23 to slide along the inclined surfaces SF1 and SF2, making it possible to easily change the position of the seat 100 in the front-rear and up-down directions.

[0059] (3) Either the inclined surface SF1 or the inclined surface SF2 slopes upward toward the front, and the other either the inclined surface SF1 or the inclined surface SF2 slopes upward toward the rear (FIGS. 4A and 4B). This allows the seat 100 to move in the front-to-rear direction while maintaining a constant height. Also, the seat 100 can be moved up and down while maintaining a constant position in the front-to-rear direction.

[0060] (4) Both the inclined surface SF1 and the inclined surface SF2 are inclined upward toward the front or rear (FIGS. 5A and 5B). In this case, the seat 100 can be moved forward and backward while maintaining a constant height. Also, the seat 100 can be moved up and down while maintaining a constant position in the forward and backward directions.

[0061] (5) The intermediate slide mechanism 20B and the upper slide mechanism 20C are arranged with their positions shifted from each other in the left-right direction (FIG. 2). This allows the lower end surface of the upper member 23 to move below the upper end surface of the lower member 21 without interference between the lower member 21 and the upper member 23, thereby expanding the range of movement of the seat 100.

[0062] (6) The intermediate slide mechanism 20B further includes an electric motor 225 that moves the intermediate member 22 along the inclined surface SF1 (FIG. 2). The upper slide mechanism 20C further includes an electric motor 235 that moves the upper member 23 along the inclined surface SF2 (FIG. 2). The seat 100 further includes an ECU (controller) 102 that controls the electric motors 225, 235 so that the seat cushion 110 is positioned at a predetermined position in the front-rear direction and at a predetermined position in the up-down direction (FIG. 6). This allows the occupant to move the seat 100 to a desired position simply by operating a switch or the like to move the seat 100 in the front-rear direction and the up-down direction. In addition, by simultaneously driving the electric motors 225, 235, the ECU 102 can move the seat 100 up and down while maintaining a constant position in the front-rear direction.

[0063] (7) The seat 100 includes a front row seat 100F and a rear row seat 100R that are spaced apart from each other in the front-to-rear direction (FIGS. 9A and 9B). The ECU 102 controls the electric motors 225, 235 of the front row seat 100F and the rear row seat 100R so that the vertical position of the seat cushion 110 of the front row seat 100F is different from the vertical position of the seat cushion 110 of the rear row seat 100R (FIG. 9B). This makes it easy to set the seat position so that the feet of an occupant in the rear row seat 100R do not come into contact with the front row seat 100F.

[0064] (8) The support portion 20 further includes a lower slide mechanism 20A that supports the lower member 21 on the floor 1 so that the lower member 21 can slide in the front-rear direction (FIGS. 1 and 2). This allows the seat 100 to move a large distance.

[0065] In the above embodiment, the lower member 21 (first member) is supported on the floor 1 as a base, but the first member may be supported on the base via a height mechanism such as a four-bar link. In the above embodiment, the seat cushion 110 is supported on the upper member 23 (third member), but the seat cushion may be supported on the third member via a height mechanism such as a four-bar link. In other words, the height mechanism may be left rather than omitted. In the above embodiment, the intermediate member 22 (second member) is configured to have a substantially trapezoidal shape in a side view, but the second member may have a shape other than a trapezoid.

[0066] In the above embodiment, the intermediate slide mechanism 20B is provided to support the intermediate member 22 slidably from the lower member 21 along the inclined surface SF1 (first inclined surface) that extends obliquely in the front-rear direction (length direction) and the up-down direction (height direction), and the upper slide mechanism 20C is provided to support the upper member 23 slidably from the intermediate member 22 along the inclined surface SF2 (second inclined surface). That is, the intermediate slide mechanism 20B (first slide mechanism) is provided to engage the lower rail 213 (first lower rail) on the upper surface of the lower member 21 with the upper rail 222 (first upper rail) on the lower surface of the intermediate member 22, and the upper slide mechanism 20C (second slide mechanism) is provided to engage the lower rail 223 (second lower rail) on the upper surface of the intermediate member 22 with the upper rail 232 (second upper rail) on the lower surface of the upper member 23, but the configurations of the first slide mechanism and the second slide mechanism are not limited to those described above.

[0067] In the above embodiment, the intermediate member 22 is moved along the inclined surface SF1 by the electric motor 225 (first actuator), and the upper member 23 is moved along the inclined surface SF2 by the electric motor 235 (second actuator), but the first actuator and the second actuator may have any configuration. The ECU 102 serving as a control unit that controls the electric motors 225, 235 may also have any configuration as long as the position of the seat 100 is changed in response to the operation of the operating unit 103.

[0068] In the above embodiment (FIGS. 9A and 9B), the front row seat 100F (first vehicle seat) and the rear row seat 100R (second vehicle seat) are configured as vehicle seats 100 each having a support portion 20, but only one of the front row seat 100F and the rear row seat 100R may be configured as a vehicle seat 100 having a support portion 20. In the above embodiment, the lower member 21 is supported via the lower slide mechanism 20A (third slide mechanism) so as to be slidable in the front-to-rear direction relative to the floor 1, but the third slide mechanism may be omitted.

[0069] In the above embodiment, the ottoman 140 is provided rotatably at the front end of the seat cushion 110, but the tip of the ottoman 140 may be configured to be extendable. The seat back 120 may be provided with a folding mechanism so that the seat back 120 can rotate in the front-rear direction between the upper and lower ends of the seat back 120. The seat cushion 110 may be provided with a seat surface angle adjustment mechanism to adjust the angle of the seating surface 114.

[0070] In the above embodiment, the lower end of the support portion 20 is supported by the floor 1, but if the support portion 20 protrudes upward from the floor 1, it may hinder the movement of passengers inside the vehicle. Therefore, in order to facilitate the movement of passengers inside the vehicle, at least a portion of the support portion 20 may be arranged below the floor 1. Such a vehicle will be described below with reference to Figs. 10 to 15.

[0071] FIG. 10 is a side view and FIG. 11 is a front view showing a schematic configuration of the main parts of a vehicle (car) 50 according to this embodiment. Similar to FIG. 9B, FIG. 10 shows a front row seat 100F and a rear row seat 100R. The seat 100 is in a relaxed position corresponding to the relaxation mode. FIG. 11 shows two seats 100 (a driver's seat 100D and a passenger's seat 100P) arranged side by side.

[0072] As shown in Figures 10 and 11, a pair of left and right recesses 51, 51 (four recesses 51 in total) of a predetermined depth are provided in the floor 1 below the left and right seats 100. The recesses 51 are constituted by a support frame 52 on the bottom surface and front, rear, left and right side walls 53 rising from the edges of the support frame 52, forming a substantially box-shaped storage space SP0. The lower rails 11 of the lower slide mechanism 20A are provided on the upper surface of the support frame 52. The lower frame 210 of the support part 20 is disposed in the storage space SP0. The upper rails 212 on the bottom surface of the lower frame 210 are slidably engaged with the lower rails 11.

[0073] 11, the width (length in the left-right direction) of the recess 51 is greater than the width of the lower frame 210. Note that in FIG. 11, the left-right positions of the lower frame 210 and the upper frame 230 of the support portion 20 are the same, but as in FIG. 2, the left-right positions of the lower frame 210 and the upper frame 230 may be different from each other. As shown in FIG. 10, the length (length in the front-rear direction) of the recess 51 is longer than the length from the front end of the lower rail 11 of the front row seat 100F to the rear end of the lower rail 11 of the rear row seat 100R. More specifically, the length of the recess 51 is set in consideration of the maximum amount of movement of the support portion 20 in the front-rear direction so that the recess 51 does not interfere with the support portion 20.

[0074] A portion of the opening 51a above the recess 51, i.e., a portion of the opening 51a above the front end of the recess 51 and a portion of the opening 51a above the middle portion of the recess 51 in the front-to-rear direction, is covered with a lid 55. The lid 55 is provided in a position where it does not interfere with the support portion 20. Specifically, the lid 55a is provided in front of the front row seat 100F, and the lid 55b is provided in front of the rear row seat 100R and behind the front row seat 100F. Covering a portion of the opening 51a with the lid 55 allows the occupant to place their feet on the upper surface of the lid 55.

[0075] The lid 55 may be configured to be movable in the front-rear direction along the floor 1. For example, as shown in FIG. 12, which is a plan view of the lid 55, the front lid 55a may be elongated in the front-rear direction and supported so as to be movable in the front-rear direction along the floor 1. A support portion 1a provided on the bottom surface of the floor 1 may be connected to the rear end portion of the lid 55a by a spring 59 so that the lid 55a is constantly biased rearward. In this case, a stopper 58 may be provided on the bottom surface of the floor 1 to limit the rearward movement of the lid 55a. With this configuration, when the support portion 20 moves forward and the support portion 20 (e.g., the intermediate member 22) comes into contact with the front end portion of the lid 55a, the lid 55a is pushed forward against the biasing force of the spring 59. This allows the lid 55a to be provided close to the support portion 20, making the lid 55a larger, and allowing the lid 55 to widely cover the opening 51a of the recess 51. The lid 55b may also be configured to be movable in the front-rear direction in a similar manner.

[0076] 10 and 11, a generally box-shaped space SP1 is formed below the seat 100 between the support frame 52 and the bottom frame 54 of the vehicle body. The space SP1 extends in the front-to-rear direction from the front end to the rear end of the recess 51, and also extends in the left-to-right direction from the right end face of the right recess 51 to the left end face of the left recess 51 of the pair of left and right recesses 51. A thin battery BT1 that is generally rectangular in plan view is stored in the space SP1.

[0077] As shown in Fig. 10, in front of and behind the seat 100, between the floor 1 and the bottom frame 54, there are formed spaces SP2 that are elongated in the left-right direction from the right end to the left end of the vehicle body, each space SP2 being roughly box-shaped. A battery BT2 that is roughly rectangular in plan view is housed in each space SP2. The battery BT2 is longer in the up-down direction than the battery BT1.

[0078] 11, on the left and right sides of the seat 100, i.e., to the right of the driver's seat 100D, to the left of the passenger's seat 100P, and to the left of the driver's seat 100D and to the right of the passenger's seat 100P, approximately box-shaped spaces SP3 that are elongated in the front-to-rear direction are formed between the floor 1 and the bottom frame 54. A battery BT3 that is approximately rectangular in plan view is housed in each space SP3. The battery BT3 is longer in the up-down direction than the battery BT1.

[0079] In this way, the lower end of the support part 20 is disposed in the storage space SP0 of the recessed part 51 of the floor 1, which reduces the area of ​​the support part 20 that protrudes from the floor 1, thereby preventing the support part 20 from interfering with the movement of occupants within the vehicle cabin. In addition, since the batteries BT1, BT2, and BT3 are disposed in the space SP1 below the recessed part 51 and in the spaces SP2 and SP3 on the front, rear, left, and right sides of the recessed part 51, when the vehicle 50 is, for example, an electric vehicle, sufficient power can be supplied from these batteries.

[0080] 13 and 14 are a side view and a front view, respectively, of a vehicle 50 showing a modification of the vehicle shown in FIGS. 10 and 11. In FIGS. 13 and 14, the recess 51 is deeper than that shown in FIGS. 10 and 11, and a larger area of ​​the support portion 20 is accommodated in the recess 51. The entire support portion 20 may also be accommodated in the recess 51. If the seat cushion 110 of the seat 100 or the feet of the occupant interfere with the floor 1, the cyber angle of the seat 100 (the angle between the horizontal plane and the seat cushion 110) may be changed. For example, the seat cushion 110 may be tilted in the direction of the arrow in FIG. 15 to increase the cyber angle as shown by the dotted line.

[0081] 13 and 14, as shown in FIG. 14, a substantially box-shaped space SP4 surrounded by a support frame 52 and a side wall 53 is formed between the left and right recesses 51, 51 of each seat 100F, 100P. The space SP4 is elongated in the front-to-rear direction, and various items 56 can be stored in the space SP4. For example, an entrance for inserting and removing the item 56 can be provided at the front or rear of the space SP4, and the item 56 can be inserted into or removed from the space SP4 through the entrance. The item 56 may be inserted and removed by moving the seat 100 in the front-to-rear direction.

[0082] According to this embodiment, the following effects can be further achieved. (1) A vehicle (car) 50 having a seat 100 has a floor 1 that extends substantially horizontally, and the support portion 20 is disposed below the floor 1 (FIGS. 10 to 13). This reduces the area of ​​the support portion 20 that protrudes from the floor 1, thereby preventing the movement of occupants within the vehicle cabin from being impeded.

[0083] (2) The upper end of the lower member 21 is disposed below the floor 1 (FIGS. 10 to 13). This prevents the feet of an occupant sitting on the seat 100 from coming into contact with the lower member 21.

[0084] (3) The vehicle 50 includes a support frame 52 and side walls 53 that form a recessed storage space SP0 in the floor 1 to house the support part 20, and a lid 55 that extends along the floor 1 and covers part of the opening 51a in the top surface of the storage space SP0 (FIGS. 10 and 12). This prevents the feet of passengers or luggage from falling into the storage space SP0.

[0085] (4) The vehicle 50 further includes batteries arranged under the floor 1. The batteries include a battery BT1 arranged under the seat 100 and batteries BT2 and BT3 arranged on the sides of the seat 100 (FIGS. 10 to 13). This allows many batteries to be installed in the vehicle 50, enabling the vehicle (e.g., an electric vehicle) to be supplied with sufficient power.

[0086] (5) The support unit 20 has a pair of frame portions spaced apart in the left-right direction, namely, a pair of left and right lower frames 210, 210, a pair of left and right intermediate frames 220, 220, and a pair of left and right upper frames 230, 230 (FIG. 11). A space SP4 for storing an article 56 is formed between the pair of left and right frame portions (FIG. 13). This allows the space below the seat 100 to be used effectively.

[0087] (6) The seat 100 further includes an ottoman 140 rotatably supported at the front end of the seat cushion 110 so as to hold the occupant's feet above the floor 1 (FIGS. 10 and 12). This prevents the occupant's feet from interfering with the floor 1.

[0088] In the above embodiment (FIGS. 10 and 13), the lid 55 covers a portion of the opening 51a on the top surface of the recess 51. However, the position of the lid is not limited to the above, as long as it is provided so as not to interfere with the movement of the support member 20. The lid 55 may cover the entire opening 51a. A cutout corresponding to the outer shape of the support member 20 may be provided in the lid 55 (lid portion). In the above embodiment (FIGS. 10 and 11), the base that supports the seat 100, i.e., the support frame 52, is provided on the bottom surface of the recess 51, and the height of the base is the same for each of the seats 100F, 100R, 100D, and 100P. However, the height of the base may be different for each of the seats 100F, 100R, 100D, and 100P.

[0089] In the above embodiment (FIG. 10), the support frame 52 and the sidewall 53 form the storage space SP0 for storing the support portion 20, but the configuration of the storage space forming portion is not limited to that described above. In the above embodiment (FIGS. 10 and 11), the battery is disposed below the floor 1. More specifically, the battery BT1 (first power storage device) is disposed below the seat 100, and the batteries BT2 and BT3 (second power storage devices) are disposed on the sides (front, rear, left, and right) of the seat 100, but the arrangement of the power storage devices is not limited to that described above. In the above embodiment (FIG. 14), the storage space SP4 for the item 56 is formed between a pair of left and right frame portions of the support portion 20, i.e., between the pair of left and right lower frames 210, 210, the pair of left and right intermediate frames 220, 220, and the pair of left and right upper frames 230, 230, but the storage space may be formed in another position.

[0090] Although an example in which the vehicle seat 100 is applied to a vehicle has been described above, the vehicle seat of the present invention can also be applied to vehicles other than vehicles, such as aircraft and ships.

[0091] The above description is merely an example, and the present invention is not limited to the above-described embodiment and modifications as long as the features of the present invention are not impaired. One or more of the above-described embodiment and modifications can be arbitrarily combined, and modifications can also be combined with each other. [Explanation of symbols]

[0092] 1 floor, 20 support part, 20A lower slide mechanism, 20B intermediate slide mechanism, 20C upper slide mechanism, 21 lower member, 22 intermediate member, 23 upper member, 50 vehicle (vehicle), 51 recess, 52 support frame, 53 side wall, 55 lid, 100 vehicle seat, 100F front row seat, 100R rear row seat, 102 ECU, 110 seat cushion, 120 seat back, 140 ottoman, 210 lower frame, 213 lower rail, 220 intermediate frame, 222 upper rail, 223 lower rail, 225 electric motor, 230 upper frame, 232 upper rail, 235 electric motor, SF1, SF2 inclined surface, SP0 storage space, SP4 space, BT1, BT2, BT3 battery

Claims

1. a seat cushion extending substantially horizontally in the width direction and the length direction among the width direction, length direction, and height direction which are orthogonal to each other; a seat back supported by one end of the seat cushion in the length direction and extending in the height direction; a support portion that supports the seat cushion movably in the length direction and the height direction relative to a base portion, the support portion includes a first member supported on the base portion, a second member supported on the first member so as to be movable along a first inclined surface extending obliquely in the length direction and the height direction, and a third member supported on the second member so as to be movable along a second inclined surface extending obliquely in the length direction and the height direction, The vehicle seat is characterized in that the seat cushion is supported by the third member.

2. The vehicle seat according to claim 1, the support portion includes a first slide mechanism that supports the second member slidably from the first member along the first inclined surface, and a second slide mechanism that supports the third member slidably from the second member along the second inclined surface, the first slide mechanism includes a first lower rail provided on an upper surface of the first member and a first upper rail provided on a lower surface of the second member and engaged with the first lower rail, The second slide mechanism has a second lower rail provided on the upper surface of the second member, and a second upper rail provided on the lower surface of the third member and engaging with the second lower rail.

3. The vehicle seat according to claim 1, A vehicle seat characterized in that either the first inclined surface or the second inclined surface is inclined at an upward gradient in one direction of the length, and the other of the first inclined surface or the second inclined surface is inclined at an upward gradient in the other direction of the length.

4. The vehicle seat according to claim 1, A vehicle seat, characterized in that both the first inclined surface and the second inclined surface are inclined upward in one of the longitudinal directions.

5. The vehicle seat according to claim 2, The vehicle seat, wherein the first slide mechanism and the second slide mechanism are arranged to be offset from each other in the width direction.

6. The vehicle seat according to claim 2, the first slide mechanism further includes a first actuator that moves the second member along the first inclined surface; the second slide mechanism further includes a second actuator that moves the third member along the second inclined surface, The vehicle seat further comprises a control unit that controls the first actuator and the second actuator so that the seat cushion is positioned at a predetermined position in the length direction and a predetermined position in the height direction.

7. The vehicle seat according to claim 6, the vehicle seat includes a first vehicle seat and a second vehicle seat spaced apart from each other in a longitudinal direction; The control unit controls the first actuator and the second actuator of the first vehicle seat and the second vehicle seat, respectively, so that the height position of the seat cushion of the first vehicle seat and the height position of the seat cushion of the second vehicle seat are different.

8. The vehicle seat according to claim 2, The vehicle seat, wherein the support portion further includes a third slide mechanism that supports the first member on the base so that the first member is slidable in the length direction.

9. A vehicle comprising the vehicle seat according to any one of claims 1 to 8, A floor extending substantially horizontally; The vehicle is characterized in that the support portion is disposed below the floor.

10. 10. The vehicle of claim 9, A vehicle, characterized in that an upper end of the first member is positioned below the floor.

11. 10. The vehicle of claim 9, a storage space forming portion that forms a recessed storage space in the floor to accommodate the support portion; a lid portion extending along the floor and covering a portion of an upper surface of the storage space.

12. 10. The vehicle of claim 9, further comprising an electricity storage device disposed below the floor, The vehicle, characterized in that the power storage device includes a first power storage device disposed below the vehicle seat and a second power storage device disposed to the side of the vehicle seat.

13. 10. The vehicle of claim 9, the support portion has a pair of frame portions spaced apart in the width direction, A vehicle characterized in that a storage space for storing items is formed between the pair of frame portions.

14. 10. The vehicle of claim 9, The vehicle seat further comprises an ottoman pivotally supported on the other longitudinal end of the seat cushion to hold the occupant's feet above the floor.

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