JP2019069683A - Vehicle and vehicle seat structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle and a seat structure for a vehicle capable of suitably supporting a posture of an occupant. A seat 30 or a seat structure 24 of a vehicle 10 includes a seat surface 100 that supports a buttock 304 of an occupant 300 and thighs 308l and 308r. The seat seat surface 100 is provided with a buttock support portion 110 that supports the buttock portion 304 and a raised portion 112 that is provided in front of the buttock support portion 110 at the center of the front side of the seat seat surface 100 and is located in front of or below the crotch 306 of the occupant 300. And the left and right thigh support portions 114l and 114r which are curved downward toward the front side on both sides of the raised portion 112 to support the thighs 308l and 308r. [Selection diagram] Fig. 4

Description

  The present invention relates to a vehicle having a passenger seat and a vehicle seat structure.

  There is known a one-person vehicle in which a driving wheel is provided immediately below or in the vicinity of a passenger and self-propelled (for example, Patent Document 1). The vehicle 10 of Patent Document 1 is configured to allow an occupant to easily get on and off, and travels with the occupant sitting on the saddle 30 (see FIG. 1). The vehicle 10 assists the movement of the passenger by allowing the passenger moving usually by walking to be on board arbitrarily. In particular, the vehicle 10 is configured such that usability is greatly improved (it is easy to get on and off) by not including a large body or the like that covers a passenger while getting on the vehicle.

  In Patent Document 1, the vehicle 10 is moved by changing the center-of-gravity position of the entire vehicle 10 by tilting the body ([0055] to [0063]).

JP, 2016-203908, A

  As described above, in Patent Document 1, the vehicle 10 is moved by changing the center-of-gravity position of the entire vehicle 10 by inclining the body of the vehicle ([0055] to [0063]). In Patent Document 1, no particular consideration is made on supporting the position of the occupant using a saddle 30 (or a seat) while the vehicle 10 is moving.

  The present invention has been made in consideration of the problems as described above, and an object thereof is to provide a vehicle and a vehicle seat structure capable of suitably supporting the posture of an occupant.

A vehicle according to the present invention includes a seat for a passenger and a step of putting a foot of the passenger on the seat.
The seat includes a seat surface that supports the buttocks and thighs of the occupant.
The seat seating surface is
A buttocks support for supporting the buttocks;
A raised portion provided in front of the buttocks support portion at the front center of the seat surface and located in front of or below the crotch of the occupant;
The present invention is characterized by having left and right thigh support portions that are curved downward toward the front side on both sides of the raised portion to support the thighs.

  According to the present invention, there is provided a thigh supporting portion which is curved downward toward the front on both sides of the raised portion to support the thigh, and a step of putting a passenger's foot. Thus, the occupant can sit with his / her legs extended (or near standing), as compared to, for example, a conventional wheelchair. As a result, the buttocks support can be disposed at a high position. Therefore, it is possible to improve the visibility by raising the eye gaze position of the occupant.

  Further, as described above, when the position of the buttocks support portion is raised, the occupant tends to lean forward when traveling on the down slope. However, in the present invention, a protuberance is provided in front of the buttocks support portion at the front center of the seat surface and located in front of or below the crotch of the occupant. This makes it easy for the occupant to stabilize his / her position even when traveling on the down slope.

  The seat may have a rear wall extending upward at the rear of the seat surface. This makes it possible to suppress the slippage of the buttocks (not intended by the occupant) accompanying the movement of the vehicle in the front-rear direction by the raised portions and the rear wall.

  The seat may have a side wall extending upward at a side of the seat surface. As a result, when the vehicle bends (when force in the left and right direction is applied to the occupant), slippage of the thigh (not intended by the occupant) can be suppressed by the raised portion and the side wall portion. The rear wall and the side wall may be integrally formed.

  It is good also as curved surface shape from the said protruding part to the said back wall part and the said side wall part. Further, the buttocks support portion may have a buttocks support curved surface which is directed upward toward the rear of the vehicle. Furthermore, the raised portion may have a raised curved surface that protrudes upward and forward of the vehicle and is continuous with the buttocks support curved surface in the front-rear direction of the vehicle. Furthermore, the thigh support portion may have a thigh support curved surface which is continuous with the raised curved surface in the left-right direction of the vehicle and which is directed downward toward the front. In addition, the rear wall may have a rear curved surface that is continuous with the buttock support curved surface. Furthermore, the side wall may have a side curved surface continuous with the thigh support curved surface.

  This makes it easier to further suppress slippage of the buttocks (not intended by the occupant) accompanying the movement of the vehicle in the front-rear direction and slippage of the thigh (not intended by the occupant) when the vehicle bends.

  The vehicle may be for single use. The vehicle includes a left motor connected to a left driving wheel disposed below the seat, a right motor connected to a right driving wheel disposed below the seat, and acceleration, deceleration, and steering of the vehicle. And a controller for controlling the left motor and the right motor based on the instruction of the occupant.

  This makes it possible to use a single-seated self-propelled wheelchair in a broad sense (a self-propelled chair that enables movement while sitting alone by having a drive wheel and a drive source regardless of a disabled person or a healthy person). It becomes possible to provide a suitable sheet.

  A curved shape may be provided which curves upward after being curved downward from the raised portion to the buttocks support portion. As a result, the crotch of the occupant is easily caught by the raised portion, and the occupant can easily stabilize his / her position even while traveling on the downward slope.

  The left and right thigh supports may merge in front of and below the ridge. As a result, the raised portion bulges only in front of the crotch of the occupant, and the occupant easily aligns the left and right thighs in a state where the thigh is supported by the thigh support portion.

  The step may be located on the foremost side of the vehicle. Further, in the vertical direction of the vehicle, a part of the step may be located directly below the front end of the thigh support. Thereby, when the position of the buttocks support portion is raised by providing the buttocks support portion, the thigh support portion, and the step as described above, the leg easily contacts the step, and the leg can be easily supported by the leg. .

  The vehicle includes a base supporting the seat and the step, and a support frame extending upward from both sides of the base and disposed so as to surround the seat seating surface. It is also good. Moreover, the site | part which exists behind the said seat surface among the said support frames may comprise a back outer wall. Furthermore, the site | part which exists in the right-and-left side of the said seat surface among the said support frames may comprise a side outer wall.

  This makes it easier to support the thigh even when the thigh slips (not intended by the occupant) caused by the movement of the vehicle. In particular, when the rear outer wall and the side outer wall are provided in addition to the rear wall and the side wall, the thigh can be more easily supported.

A vehicle seat structure according to the present invention comprises a seat surface for supporting the buttocks and thighs of an occupant, and
The seat seating surface is
A buttocks support for supporting the buttocks;
A raised portion provided in front of the buttocks support portion at the front center of the seat surface and located in front of the crotch of the occupant;
The present invention is characterized by: a thigh support comprising a curved surface that curves downward toward the front on both sides of the raised portion to support the thigh.

  According to the present invention, it is possible to suitably support the position of the occupant.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows simply the external appearance of the single seater vehicle which concerns on one Embodiment of this invention. It is a side view which shows the state in which the passenger | crew got on the said 1 passenger | crew vehicle which concerns on the said embodiment. It is a figure showing simply the composition of the controller of the embodiment, and a run device. It is a 1st perspective view which shows a part of sheet | seat of the said embodiment. It is a front view showing a part of the sheet of the embodiment. It is a 2nd perspective view showing a part of sheet of the embodiment. FIG. 7A is a plan view showing the operation of the controller at the time of forward movement in the embodiment, and FIG. 7B is a side view showing the operation at the time of forward movement of the single-seat vehicle in the embodiment. FIG. 8A is a plan view showing the operation of the controller at the time of left turn in the embodiment, and FIG. 8B is a plan view showing the operation at the time of left turn of the single-seat vehicle. FIG. 9A is a plan view showing the operation of the controller at the time of a left pivot turn in the embodiment, and FIG. 9B is a plan view showing the operation at the left pivot turn of the single-seat vehicle in the embodiment It is.

A. One Embodiment <A-1. Configuration>
[A-1-1. Overview]
FIG. 1 is a perspective view schematically showing the appearance of a single seater vehicle 10 (hereinafter also referred to as “vehicle 10”) according to an embodiment of the present invention. FIG. 2 is a side view showing a state in which the occupant 300 gets on the vehicle 10 according to the present embodiment. The directions (upper and lower, front and rear, left and right) in FIGS. 1 and 2 are based on the vehicle 10 (the same applies to FIGS. 4 to 6 described later).

  The vehicle 10 is configured such that the occupant 300 can easily get on and off, and travels with the occupant 300 sitting. For example, the vehicle 10 assists the movement of the occupant 300 by allowing the occupant 300 which normally moves by walking to get on arbitrarily. In particular, the vehicle 10 does not have a large body or the like covering the occupant 300 while getting on the vehicle, and thus has a configuration in which usability is greatly improved (it is easy to get on and off).

  As shown in FIG. 1 and FIG. 2, the vehicle 10 includes a controller 20, a traveling device 22, and a seat structure 24. The seat structure 24 comprises a seat 30, a step 32 and a support frame 34.

[A-1-2. Controller 20]
FIG. 3 is a diagram schematically showing the configuration of the controller 20 and the traveling device 22 of the present embodiment. The controller 20 (input device) has a power switch 50 and an operating element 52. The power switch 50 is a part for inputting an operation command of an occupant switching the power on / off of the vehicle 10. The operating element 52 is a part for inputting an operation command of the occupant 300 relating to acceleration, deceleration and steering (turning) of the vehicle 10. That is, the occupant 300 can control acceleration, deceleration, and steering (turning) of the vehicle 10 by operating the operating element 52 with the hand 302 (FIG. 8B).

  As described above, the vehicle 10 assumes that the occupant 300 uses it instead of walking. Therefore, the maximum speed of the vehicle 10 is relatively low. The forward maximum speed of the vehicle 10 is, for example, 6 km / h, and the reverse maximum speed is, for example, 2 km / h.

  As shown in FIG. 1, the operating element 52 is supported by a bracket 54 fixed to the seat 30. Since the power switch 50 is behind the operating element 52, it is not shown in FIG. 1, but is shown in FIG. 7A or the like. A method of operating the vehicle 10 using the controller 20 will be described later with reference to FIGS. 7A to 9B.

[A-1-3. Traveling device 22]
The traveling device 22 controls the driving force, the braking force, and the steering angle of the vehicle 10 to enable the vehicle 10 to travel on its own. As shown in FIG. 3, the traveling device 22 includes drive wheels 601 and 60r, motors 621 and 62r, a battery 64, inverters 661 and 66r, various sensors 68, and a traveling control device 70. Moreover, as shown to FIG. 1, FIG. 8B and FIG. 9B, it has a driven wheel 721, 72r. A step-up / step-down DC / DC converter (not shown) may be provided between the battery 64 and the inverters 66l and 66r.

  As shown in FIG. 1, the drive wheels 60 l and 60 r are disposed on both sides below the seat 30. The motors 62l and 62r, the battery 64, the inverters 66l and 66r, the various sensors 68, and the travel control device 70 are disposed in the housing 80.

  In the present embodiment, the driving force is generated by the motors 62l and 62r (driving source), and the braking force is generated by regeneration by the motors 62l and 62r. Further, the steering angle is controlled by controlling the torque difference between the motors 62l and 62r.

  The motors 62l and 62r are in-wheel motors connected to the drive wheels 60l and 60r, and are three-phase alternating current type. The inverters 66l and 66r convert direct current from the battery 64 into alternating current and supply the same to the motors 62l and 62r in accordance with a drive signal from the traveling control device 70. Further, at the time of regeneration of the motors 62l and 62r, the inverters 66l and 66r convert alternating current of the motors 62l and 62r into direct current and supply the direct current to the battery 64.

  The various sensors 68 include a speed sensor, an acceleration sensor, and the like, detect the state of the vehicle 10, and output the state to the traveling control device 70. The traveling control device 70 (control device) outputs drive signals to the inverters 661 and 66r based on the operation command from the occupant input via the controller 20 and the detection values from the various sensors 68.

[A-1-4. Sheet 30]
(Outline of A-4-1. Sheet 30)
FIG. 4 is a first perspective view showing a part of the seat 30 of the present embodiment. FIG. 5 is a front view showing a part of the seat 30 of the present embodiment. FIG. 6 is a second perspective view showing a part of the seat 30 of the present embodiment. It should be noted that the broken lines shown in FIGS. 4 to 6 are imaginary lines for showing the surface shape of the sheet 30 and are not present in the actual sheet 30.

  As shown in FIGS. 1 and 4 to 6, the seat 30 has a seat surface 100 for supporting the buttocks and thighs of the occupant 300. As shown in FIG. 1, a seat seating surface 100 (hereinafter also referred to as “seating surface 100”) is supported by a seating surface support shaft 102. The seat support shaft 102 can be adjusted in height (i.e., the length in the vertical direction) by a height adjustment mechanism (not shown).

(A-1-4-2. Seat seating surface 100)
As shown in FIGS. 4 to 6, the seat surface 100 includes a buttocks support portion 110, a raised portion 112, thigh support portions 114 l and 114 r, and a wall portion 116. The buttocks support 110 supports the buttocks 304 (FIG. 2) of the occupant 300. The buttocks support portion 110 has a slightly raised convex buttocks support curved surface 120 in the front-rear direction and the left-right direction of the vehicle 10 (see FIG. 5).

  The raised portion 112 is provided in front of the buttocks support portion 110 at the front center of the seat surface 100 and is located in front of or below the crotch 306 (FIG. 8B) of the occupant 300. In addition, the raised portion 112 has a raised curved surface 122 that is convex in the front-rear direction and the left-right direction of the vehicle 10 (FIGS. 4 to 6).

  The thigh support portions 114l and 114r curve downward toward the front on both sides of the raised portion 112 to support the thighs 308l and 308r (FIG. 8B) of the occupant 300. Also, the thigh support portions 114l and 114r have thigh support curved surfaces 124l and 124r that are continuous with the raised curved surface 122 in the left-right direction of the vehicle 10 and are directed downward toward the front of the vehicle 10. The left and right thigh supports 114l and 114r merge in front of and below the ridge 112 (FIGS. 4 and 5).

  The wall portion 116 is configured integrally with the rear wall portion 130 and the side wall portions 132l and 132r. The rear wall 130 extends upward at the rear of the seat surface 100. The rear wall 130 also has a rear curved surface 140 continuous with the buttock support curved surface 120. The side wall portions 132l, 132r extend upward at the sides of the seat surface 100. Also, the side wall portions 132l, 132r have side curved surfaces 142l, 142r that are continuous with the thigh support curved surfaces 124l, 124r. Each curved surface 120, 122, 124l, 124r, 140, 142l, 142r forms a curved shape from the raised portion 112 to the rear wall 130 and the side walls 132l, 132r.

[A-1-5. Step 32]
Step 32 supports the feet 310l, 310r (FIGS. 2 and 8B) of the occupant 300. Step 32 extends from the base 150 (FIG. 2) toward the front of the vehicle 10 (see FIGS. 1 and 2). As shown in FIG. 2, step 32 is located on the foremost side of the vehicle 10. Further, in the vertical direction of the vehicle 10, a part of the step 32 is positioned directly below the front ends of the thigh support portions 114l and 114r.

[A-1-6. Support frame 34]
The support frame 34 extends upward from both sides of the base 150 and is arranged to surround the seat seating surface 100 (see FIGS. 1 and 2). As shown in FIG. 1, a portion of the support frame 34 located behind the seat surface 100 constitutes a rear outer wall 160. Further, portions of the support frame 34 present on the left and right sides of the seat surface 100 constitute side outer walls 162l and 162r.

<A-2. Operation of vehicle 10 in the present embodiment>
FIG. 7A is a plan view showing the operation of the controller 20 at the time of forward movement in the present embodiment. FIG. 7B is a side view showing the operation at the time of forward movement of the vehicle 10 in the present embodiment. As shown in FIG. 7A, when the occupant 300 pushes the operating element 52 of the controller 20 in the forward direction, the traveling control device 70 (FIG. 3) rotates the inverters 66l and 66r in the forward direction based on the operation information. Output the operation command to be performed.

  Thus, the inverters 66l and 66r rotationally drive the motors 62l and 62r to move the left drive wheel 60l and the right drive wheel 60r in the forward direction (counterclockwise rotation of the left drive wheel 60l in left side view and right drive in right side view The wheel 60r is rotated clockwise at the same rotational speed. Therefore, as shown in FIG. 7B, the vehicle 10 travels straight ahead.

  The controller 20 outputs information on the amount of operation of the operating element 52 of the occupant 300, and the travel control device 70 outputs an operation command to change the rotational speeds of the left and right motors 62l and 62r in proportion to the amount of operation. Do. Thus, for example, when the occupant 300 operates the operating element 52 in a small amount, the vehicle 10 travels slowly straight ahead, and when the occupant 300 operates the operating element 52 in large amounts, the vehicle 10 travels straight ahead quickly You will come to

  In addition, the travel control device 70 performs the stop when the occupant 300 releases the hand 302 from the operating element 52 and the operating element 52 returns (that is, there is no pressing operation of the occupant 300). When stopping from the moving state, when the traveling control device 70 receives the operation information returned by the operating element 52, the traveling control device 70 outputs, to the inverters 66l and 66r, an operation command for setting the speed to zero (reverse torque). As a result, the motors 62l and 62r apply regenerative braking to stop the vehicle 10. The regenerative energy at the time of stop is charged to the battery 64.

  Furthermore, although illustration is omitted, when the occupant 300 pulls the operation element 52 in the backward direction, the traveling control device 70 rotates in the reverse direction (reverse direction to the forward direction) to the inverters 66l and 66r based on the operation information. Output an operation command to As a result, the left motor 621 and the right motor 62r rotate the left driving wheel 60l and the right driving wheel 60r at the same rotational speed, and the vehicle 10 retreats backward. Also in the case of moving the vehicle 10 backward, it is preferable to make the reverse speed variable according to the operation amount of the operating element 52 of the occupant 300.

  FIG. 8A is a plan view showing the operation of the controller 20 at the time of a left turn in the present embodiment. FIG. 8B is a plan view showing an operation at the time of left turn of the vehicle 10. As shown in FIG. As shown in FIG. 8A, when the occupant 300 pushes the operating element 52 diagonally forward to the left, the traveling control device 70 rotates the left motor 62l at a low speed with respect to the inverters 66l and 66r based on the operation information. An operation command for rotating the motor 62r at high speed is output. As a result, while the left motor 62l rotates slowly, a rotational difference in which the right motor 62r rotates fast is generated. Therefore, as shown in FIG. 8B, the vehicle 10 can turn left while advancing forward from the current position.

  Also in the case where the vehicle 10 is turned, the turning speed may be variable according to the operation amount of the operating element 52 of the occupant 300. Although illustration is omitted, when the occupant 300 pushes the operating element 52 obliquely forward to the right, the vehicle 10 turns right. At this time, the traveling control device 70, the inverters 66l, 66r, the left motor 62l, and the right motor 62r perform the operations reverse to the above (the specific description is omitted).

  FIG. 9A is a plan view showing the operation of the controller 20 at the time of a left pivot turn in the present embodiment. FIG. 9B is a plan view showing an operation at the time of a left turn turn of the vehicle 10 in the present embodiment. As shown in FIG. 9A, it is assumed that the occupant 300 rotates the operating element 52 counterclockwise. When the traveling control device 70 receives the operation information, the traveling control device 70 rotates the left motor 621 in the direction opposite to the forward direction (backward direction) and outputs an operation command to rotate the right motor 62r in the forward direction to the inverters 66l and 66r. Do.

  Therefore, as shown in FIG. 9B, the left driving wheel 60l advances rearward while the right driving wheel 60r advances forward. At this time, the rotational speeds of the left motor 621 and the right motor 62r are the same even if the rotational directions are opposite to each other. Therefore, a turning moment in the yaw direction is applied to the vehicle 10, and the vehicle 10 turns to the left (counterclockwise) with almost no shift in the current position. When the occupant 300 stops the rotation operation of the operation element 52, this signal turning is stopped by applying regenerative braking to the left motor 62l and the right motor 62r.

  The turning speed may be variable according to the amount of operation (the amount of rotation) of the operating element 52 of the occupant 300 as well in the pivot turn. Although illustration is omitted, when the passenger 300 rotates the operating element 52 clockwise, the vehicle 10 turns to the right (clockwise). At this time, the traveling control device 70, the inverters 66l, 66r, the left motor 62l, and the right motor 62r perform the operations reverse to the above (the specific description is omitted).

<A-3. Effects of this embodiment>
According to the above-described embodiment, the thigh support portions 114l and 114r that support the thighs 308l and 308r by curving downward toward the front on both sides of the raised portion 112, and the feet 310l of the occupant 300, And step 32 for carrying 310r (FIG. 1, FIG. 4, etc.). As a result, the occupant 300 can sit in an extended (or near standing) position with the legs 312l, 312r (FIG. 8B) (as compared to, for example, a regular wheelchair). As a result, the buttocks support portion 110 can be disposed at a high position. Therefore, the visibility can be improved by raising the position of the line of sight of the occupant 300.

  Further, as described above, when the position of the buttocks support portion 110 is raised, the occupant 300 is likely to lean forward when traveling on the down slope. However, in the present embodiment, the protruding portion 112 is provided in front of the buttocks support portion 110 at the front center of the seat surface 100 and located in front of or below the crotch 306 of the occupant 300 (FIG. 4 etc.). This makes it easy for the occupant 300 to stabilize his / her position even when traveling on the down slope.

  In the present embodiment, the seat 30 has a rear wall 130 that extends upward at the rear of the seat surface 100 (FIGS. 4 to 6). As a result, it is possible to suppress the slip of the buttocks 304 (not intended by the occupant 300) caused by the movement of the vehicle 10 in the front-rear direction by the raised portions 112 and the rear wall 130.

  In the present embodiment, the seat 30 has side wall portions 132l, 132r extending upward at the sides of the seat surface 100 (FIGS. 4 to 6). As a result, when the vehicle 10 bends (when force in the left and right direction is applied to the occupant 300), slippage (not intended by the occupant 300) of the thighs 308l and 308r can be detected by the raised portion 112 and the side wall portions 132l and 132r. Can be suppressed.

  In this embodiment, it has a curved shape from the raised portion 112 to the rear wall portion 130 and the side wall portions 132l and 132r (FIGS. 4 to 6). Moreover, the buttocks support part 110 has the buttocks support curved surface 120 which goes upward toward the back of the vehicle 10 (FIG. 4 and FIG. 5). Furthermore, the raised portion 112 has a raised curved surface 122 that protrudes upward and forward of the vehicle 10 and is continuous with the buttocks-supported curved surface 120 in the front-rear direction (FIGS. 4 to 6). Furthermore, the thigh support portions 114l and 114r have the thigh support curved surfaces 124l and 124r which are continuous with the raised curved surface 122 in the left-right direction and are directed downward toward the front (FIGS. 4 to 6). In addition, the rear wall 130 has a rear curved surface 140 which is continuous with the buttock support curved surface 120 (FIGS. 4 to 6). The side wall portions 132l, 132r have a back curved surface 140 continuous with the thigh support curved surfaces 124l, 124r (FIGS. 4 to 6).

  Thereby, the slip of the heel portion 304 (the one not intended by the passenger 300) accompanying the movement of the vehicle 10 in the front-rear direction and the slip of the thighs 308l and 308r (the one not intended by the passenger 300) when the vehicle 10 bends It becomes easy to control.

  In the present embodiment, the vehicle 10 is for single use (FIG. 2). Further, the vehicle 10 includes a left motor 62l connected to the left driving wheel 60l disposed below the seat 30, a right motor 62r connected to the right driving wheel 60r disposed below the seat 30, and the vehicle 10 Controller 20 (input device) for inputting an instruction of the occupant 300 for acceleration, deceleration and steering of the vehicle, and a travel control device 70 (control device) for controlling the left motor 621 and the right motor 62r based on the instruction of the occupant 300 (Figure 3).

  As a result, it is possible to move while sitting alone by having a single-seated self-propelled wheelchair in a broad sense (whether the disabled person or the healthy person has the driving wheels 60l and 60r and the motors 62l and 62r (driving source)) It is possible to provide a seat 30 suitable for a self-propelled chair).

  In the present embodiment, after curving downward from the raised portion 112 to the buttocks support portion 110, a curved shape that curves upward is provided (FIGS. 4 to 6). As a result, the crotch 306 of the occupant 300 is easily caught by the raised portion 112, and the occupant 300 can easily stabilize its position even while traveling on the downward slope.

  In the present embodiment, the left and right thigh supports 1141 and 114r merge in front of and below the ridge 112 (FIGS. 4 and 5). As a result, the raised portion 112 is raised only in front of the crotch 306 of the occupant 300, and the occupant 300 is able to support the thighs 308l and 308r by the thigh support portions 114l and 114r. It becomes easy to align.

  In the present embodiment, the step 32 is located on the foremost side of the vehicle 10 (FIG. 2). Further, in the vertical direction of the vehicle 10, a part of the step 32 is positioned directly below the front ends of the thigh support portions 114l and 114r (FIG. 2). Thereby, when the position of the buttocks support portion 110 is raised by providing the buttocks support portion 110, the thigh support portions 114l, 114r and the step 32 as described above, the feet 310l, 310r easily come into contact with the step 32. The legs 312l and 312r help support the body.

  In the present embodiment, the vehicle 10 is a base 150 that supports the seat 30 and the step 32, extends upward from both sides of the base 150, and is arranged to surround the seat seating surface 100. And a support frame 34 (FIGS. 1 and 2). Further, a portion of the support frame 34 present behind the seat surface 100 constitutes a rear outer wall 160, and a portion of the support frame 34 present laterally to the seat surface 100 is a lateral outer wall 162l, Configure 162r (Figure 1).

  This makes it easy to support the thighs 308l, 308r even when the thighs 308l, 308r slip (not intended by the occupant 300) as the vehicle 10 moves. In particular, when the rear outer wall 160 and the side outer walls 162l and 162r are provided in addition to the rear wall 130 and the side walls 132l and 132r, the thighs 308l and 308r can be more easily supported.

B. Modifications It is a matter of course that the present invention is not limited to the above embodiment, but can adopt various configurations based on the contents of the description of the present specification. For example, the following configuration can be adopted.

<B-1. Vehicle 10>
The vehicle 10 according to the above-described embodiment has drive wheels 60l and 60r disposed on the left and right sides of the seat surface 100 (FIG. 1, etc.). However, for example, a single-seated self-propelled wheelchair (a self-propelled chair that enables movement while sitting alone by having a driving wheel and a driving source regardless of a disabled person or a healthy person) From the point of view, it is not limited to this. For example, in the case of an inverted pendulum type vehicle as in Patent Document 1, it is also possible to dispose the drive wheel directly below the seat surface 100.

  In the said embodiment, this invention was applied to the vehicle 10 as the sheet | seat 30 is shown in FIG. In other words, in the above embodiment, the present invention is applied to the vehicle 10 as a single-seated self-propelled wheelchair in a broad sense. However, for example, when focusing on the configuration of the sheet 30 or the sheet structure 24, the configuration is not limited thereto. For example, the vehicle 10 can also apply the present invention to a vehicle such as a motorcycle, a passenger car, or a moving object.

<B-2. Controller 20>
In the above embodiment, the controller 20 having the power switch 50 and the operating element 52 is used. However, for example, when focusing on the configuration of the sheet 30 or the sheet structure 24, the configuration is not limited thereto. For example, the operating element 52 may be configured in the shape of a joystick instead of the operating element 52 that performs operations as shown in FIGS. 7A, 8A and 9A. Alternatively, in the case of an inverted pendulum type vehicle as in Patent Document 1, a configuration in which the driver 300 operated by the passenger 300 with the hand 302 is not provided is also possible.

<B-3. Traveling device 22>
In the above embodiment, the traveling device 22 has the left motor 621 connected to the left driving wheel 60l and the right motor 62r connected to the right driving wheel 60r (FIG. 3). However, for example, when focusing on the configuration of the sheet 30 or the sheet structure 24, the configuration is not limited thereto. For example, if one motor has a mechanism for distributing the generated driving force, only one motor may be provided.

<B-4. Sheet 30>
In the above embodiment, the seat surface 100 includes the buttocks support portion 110, the raised portion 112, the thigh support portions 114l and 114r, the rear wall portion 130, and the side wall portions 132l and 132r (FIGS. 4 to 6). ). However, for example, focusing on the raised portion 112, it is not limited thereto. For example, one or both of the rear wall 130 and the side walls 132l, 132r may be omitted.

  In the said embodiment, the buttocks support part 110 was curved-surface-shaped (FIGS. 4-6). However, for example, when focusing on the raised portion 112, the present invention is not limited to this, and the buttocks support portion 110 may have a flat shape.

  In the above embodiment, the step 32 is located on the most front side in the vehicle 10, and a part of the step 32 is located directly below the front ends of the thigh support portions 114l and 114r in the vertical direction of the vehicle 10 (FIG. 2). However, for example, when focusing on the shape of the seat surface 100, it is not limited thereto. For example, when it is an inverted pendulum type vehicle like patent document 1, it is also possible to arrange step 32 in the both sides of the seat surface 100 (or driving wheel).

  In the above embodiment, the left and right thigh support portions 114l and 114r join together in front of and below the raised portion 112 (FIGS. 4 and 5). However, for example, focusing on the raised portion 112, it is not limited thereto. For example, the left and right thigh support portions 114l and 114r may be separated without merging in front of and below the raised portion 112.

  In the above embodiment, the support frame 34 is provided (FIG. 1). However, for example, if attention is paid to the raised portion 112, the supporting frame 34 may be omitted without being limited thereto.

10: Single seater vehicle (vehicle) 20: Controller (input device)
24: seat structure 30: seat 32: step 34: support frame 60l: left drive wheel 60r: right drive wheel 62l: left motor 62r: right motor 70: travel control device (control device) 100: seat surface 110: heel portion Support part 112 ... Protuberance part 114l, 114r ... Femoral support part 120 ... Buttock part support curved surface 122 ... Protrusion curved surface 124l, 124r ... Femoral support curved surface 130 ... Back wall part 132l, 132r ... Side wall part 140 ... Back curved surface 142 l, 142 r ... side curved surface 160 ... rear outer wall 162 l, 162 r ... side outer wall 300 ... crew 304 ... hip section 306 ... crotch 308 l, 308 r ... thigh 310 l, 310 r ... foot

Claims (10)

A vehicle comprising a passenger seat and a step of putting a passenger's foot on the vehicle,
The seat includes a seat surface that supports the buttocks and thighs of the occupant.
The seat seating surface is
A buttocks support for supporting the buttocks;
A raised portion provided in front of the buttocks support portion at the front center of the seat surface and located in front of or below the crotch of the occupant;
A vehicle, comprising: left and right thigh support portions that curve downward toward the front on both sides of the raised portion to support the thighs. In the vehicle according to claim 1,
The vehicle includes a rear wall extending upward at the rear of the seat surface. In the vehicle according to claim 1 or 2,
The vehicle includes a side wall extending upward at a side of the seat surface. The vehicle according to claim 3, which is dependent on claim 2.
A curved shape from the raised portion to the rear wall and the side wall;
The buttocks support has a buttock support curved surface directed upward toward the rear of the vehicle,
The raised portion has a raised curved surface that protrudes upward and forward of the vehicle and is continuous with the buttocks support curved surface in the front-rear direction of the vehicle
The thigh support portion has a thigh support curved surface which is continuous with the raised curved surface in the left-right direction of the vehicle and which is directed downward toward the front.
The rear wall has a rear curved surface continuous with the buttocks support curved surface,
A vehicle, wherein the side wall portion has a side curved surface continuous with the thigh support curved surface. In the vehicle according to any one of claims 1 to 4,
The vehicle is for single use,
The vehicle is
A left motor connected to a left drive wheel disposed below the seat;
A right motor connected to a right drive wheel disposed below the seat;
An input device for inputting an occupant's command for acceleration, deceleration and steering of the vehicle;
A control device configured to control the left motor and the right motor based on an instruction of the passenger. The vehicle according to any one of claims 1 to 5,
A vehicle having a curved surface shape which curves upward after being curved downward from the raised portion to the buttocks support portion. The vehicle according to any one of claims 1 to 6,
A vehicle characterized in that the left and right thigh support portions merge in front of and below the raised portion. In the vehicle according to any one of claims 1 to 7,
The step is located on the foremost side of the vehicle,
In the vertical direction of the vehicle, a part of the step is positioned directly below the front end of the thigh support. The vehicle according to any one of claims 1 to 8,
The vehicle is
A base supporting the sheet and the step;
A support frame extending upward from both sides of the base and disposed so as to surround the seat seating surface;
A portion of the support frame which is located behind the seat surface constitutes a rear outer wall,
A portion of the support frame which is present on the left and right sides of the seat surface constitutes a lateral outer wall. It has a seat surface that supports the buttocks and thighs of the occupant,
The seat seating surface is
A buttocks support for supporting the buttocks;
A raised portion provided in front of the buttocks support portion at the front center of the seat surface and located in front of the crotch of the occupant;
A vehicle seat structure comprising: a thigh support portion formed of a curved surface that curves downward toward the front on both sides of the raised portion and supports the thigh.

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