JP2018061305A - Electric-vehicular acceleration apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric-vehicular acceleration apparatus that simplifies an operation for starting a vehicle and is capable of reliably preventing a vehicular start unintended by the driver.SOLUTION: An electric-vehicular acceleration apparatus 75, for use in running an electric vehicle, includes: a steering mechanism part 34, having a steering handle 32 to be operated by a driver, for steering the vehicle; an acceleration lever 33, disposed in the steering mechanism part 34, capable of running the vehicle by an operation to draw toward the steering handle 32; and a travel control part for running the vehicle on the basis of an operation amount of the acceleration lever 33.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an accelerator device for an electric vehicle that drives the electric vehicle.

  This type of electric vehicle includes a handle-type electric wheelchair that is used by elderly people and people with reduced mobility. As the electric vehicle, an electric vehicle is known that travels by placing a hand on the accelerator lever and pressing the accelerator lever so that the driver can easily operate the accelerator.

  However, in an electric vehicle that drives the vehicle by pushing the accelerator lever down from top to bottom, if the driver mistakes the handle for putting the hand on the accelerator lever, or a caregiver accidentally touches the accelerator lever from above. In such a case, for example, in Patent Document 1, when the depression of the footboard is detected, the accelerator lever (shift operation lever) is gripped. An electrically powered vehicle is described that is driven in a crowded manner.

JP-A-6-133415

In the electric vehicle described in Patent Document 1, in order to run the vehicle, an operation in which the operation of stepping on the foot plate and the lever operation of the handle lever are required, and the driver needs to perform complicated operations on the electric vehicle. There was a problem that was required.

  The present invention has been made in consideration of the above-described circumstances, and is an accelerator device for an electric vehicle that is easy to operate and allows the vehicle to start unintentionally without fail. Is to provide.

  In order to solve the above-described problem, the present invention provides an accelerator device for an electric vehicle that travels an electric vehicle. The accelerator device includes an operation handle that is gripped by a driver, and steers the electric vehicle, and the steering mechanism. An accelerator lever that is provided in a portion and capable of traveling the electric vehicle by an operation of pulling toward the operation handle, and a travel control unit that causes the electric vehicle to travel based on an operation amount of the accelerator lever. This is an accelerator device for an electric vehicle.

  In the accelerator device for an electric vehicle according to the present invention, the operation for running the vehicle is simple and easy, and the start unintended by the driver can be surely prevented.

The left view which shows the electric vehicle to which one Embodiment of the accelerator apparatus of the electric vehicle which concerns on this invention was applied. The perspective view which looked at the handle unit with which the electric vehicle of FIG. 1 is equipped from the vehicle rear upper direction. The side view which follows the III-III line of FIG. The top view which shows the positional relationship of the base plate accommodated in an operation box, and a movable plate. The perspective view which shows the vehicle rear side in an operation box, and shows the positional relationship of a base plate and a movable plate. The figure provided with the contact-type operation amount detection sensor which concerns on 1st Embodiment of the accelerator apparatus of an electric vehicle, and looked up at the baseplate in an operation box from the vehicle rear side. The block diagram which shows the accelerator apparatus of an electric vehicle. The perspective view which shows the positional relationship of a base plate and a movable plate at the time of the lever non-operation of an accelerator lever. The perspective view which shows the positional relationship of a base plate and a movable plate at the time of lever operation of an accelerator lever. The figure which each shows the aspect of the lever operation example which draws an accelerator lever toward the grip part side of an operation handle. The figure provided with the non-contact-type operation amount detection sensor which concerns on 2nd Embodiment of the accelerator apparatus of an electric vehicle, and looked up at the base plate in an operation box from the vehicle rear side.

  Embodiments of an accelerator device for an electric vehicle according to the present invention will be described below with reference to the accompanying drawings.

[First Embodiment]
FIG. 1 is a left side view of an electric vehicle to which a first embodiment of an accelerator device for an electric vehicle according to the present invention is applied. FIG. 2 is a diagram illustrating a driving of a handle unit provided in the electric vehicle of FIG. FIG. 3 is a side view taken along the line III-III in FIG. 2. In the electric vehicle 10 shown in FIG. 1, the front side of the vehicle is indicated by a reference FW, and the rear side of the vehicle is indicated by a reference BW.

  The electric vehicle 10 is a handle-type electric wheelchair that is used as a means for moving a person with difficulty walking such as an elderly person or a person with a physical disability. The electric wheelchair 10 is a small four-wheeled vehicle in which a pair of left and right front wheels 12 and a pair of left and right rear wheels 13 are supported on a body frame 11 via suspensions 14 respectively.

  In the electric vehicle 10, the vehicle body frame 11 is covered with a resin main body cover 15 from above the vehicle. The vehicle body cover 15 includes a front vehicle body cover 16 that covers the upper side of the front wheel 12, a step floor 17, and a rear vehicle body cover 18. The rear body cover 18 covers the upper parts of the left and right rear wheels 13 from the front side, while the rear part of the vehicle body is formed in a substantially box shape and protrudes upward. Components for driving the left and right rear wheels 13 inside the rear body cover 18, for example, an electric motor 20, a battery for supplying electric power to the electric motor 20, a gear unit for transmitting the motor output to the rear wheel shaft, and driving of the vehicle A traveling control unit 21 or the like that performs control is accommodated.

  On the upper side of the rear body cover 18, a seat 22 on which a driver is seated via a bracket that rises from the body frame 11 is provided. A backrest 23 rises behind the seat 22, and left and right armrests 24 extend forward from the middle of the rising portion of the backrest 23 to form a wheelchair 25.

  The electric vehicle 10 includes a front fender portion in which a front vehicle body cover 16 that covers the front portion of the vehicle body from the upper side covers the upper portions of the left and right front wheels 12, and the front fender portion performs a mudguard function of the front wheels. Note that the front fender portion may be made of a transparent or translucent resin material. The front vehicle body cover 16 is erected so that the handle post 27 rises obliquely rearward and upward from the vehicle width direction center portion of the front portion of the vehicle body. A headlight 28 is attached to the handle post 27 in front of the rising portion. Blinkers are provided on the left and right sides of the headlight 28.

  A steering shaft 29 for steering the front wheels 12 is supported on the handle post 27 at the front of the vehicle body, and a handle unit 30 is attached to the upper end of the steering shaft 29. The driver is seated on the seat 22 and turns the handle unit 30 left and right to steer the front wheels 12.

  As shown in FIG. 2, the handle unit 30 is provided with an operation handle 32 projecting outwardly from the left and right sides of the operation box 31 in a U-shape or U-shape, and an accelerator lever 33 projecting therefrom. Composed. A steering mechanism 34 is accommodated in the operation box 31.

  The operation box 31 includes a main switch 35 as a power switch, a forward / reverse selector switch 36, an adjustment dial 37 for adjusting and setting the traveling speed in several stages, for example, 5 stages in a range of 2 km / hour to 6 km / hour, and left and right blinkers. Various switches such as a switch 38 and an alarm sound switch 39 and various indicator lamps 40 for displaying a travel distance, a charging guide, and a remaining battery level are provided.

  The steering mechanism 34 steers the electric vehicle 10, and, as shown in FIGS. 2 to 6, the operation handle 32, the accelerator lever 33, the base plate 51, the movable plate 52, the slide guide means 55, and the operation amount. It has a detection sensor 56 and the like.

  Further, a pair of mirror arms 43 are fixed to the left and right front top portions of the operation box 31. The mirror arm 43 extends outward and upward from the operation box 31, and a rearview mirror 44 is attached to the tip of the arm. The rearview mirror 44 is provided at a high position on the left and right sides of the handle unit 30, and the driver can easily confirm the rear by the rearview mirror 44 located near the line of sight.

  Reference numeral 45 denotes a brake lever that functions as a parking brake during parking.

  As shown in FIG. 1, a front basket 46 as a box-shaped storage basket is attached to the front side of the handle post 27 of the electric vehicle 10 via upper and lower support brackets at a position lower than the handle unit 30. A loading hook 47 is provided on the back side of the handle post 27 to which the front basket 46 is attached, and a shopping bag or the like is hooked on the loading hook 47.

  On the other hand, as shown in FIGS. 3 and 4, the operation box 31 of the handle unit 30 includes a base plate 51 and a movable plate 52 housed in an upper and lower split type box cover 50 (50 a, 50 b), and a steering mechanism 34. Is configured. As shown in FIG. 4, the base plate 51 is connected to the upper end portion of the steering shaft 29 in a rotationally integrated manner, and is fixed so that the vehicle rear side of the handle unit 30 is inclined obliquely and smoothly downward. On the base plate 51, an operation handle 32 is attached in a U-shape or U-shape so as to protrude to the left and right sides of the front side of the vehicle relative to the fixed portion to the steering shaft 29. The operation handle 32 is configured in a substantially loop shape with a pair of left and right grip portions 32a facing the vehicle width direction at the tip. The driver can grip the grip portion 32a of the operation handle 32 to operate the vehicle.

  4 and 5, a rectangular movable plate 52 slides in the vehicle front-rear direction along the plate surface of the base plate 51 on the rear side of the vehicle from the fixed portion of the steering shaft 29, as shown in FIGS. It is provided freely. The accelerator lever 33 is fixedly held on the movable plate 52. The accelerator lever 33 protrudes outward from the left and right sides of the movable plate 52 in a crank shape, and an operation portion 33a is formed at the tip. The operation portion 33a of the accelerator lever 33 is disposed substantially parallel to the front or the front lower side of the operation handle 32 near the grip portion 32a.

  In addition, the movable plate 52 is a substantially rectangular plate (mechanical plate). The movable plate 52 is slidably guided in the vehicle front-rear direction of the base plate 51 by slide guide means 55 provided at the center of the plate. As shown in FIG. 6, in the slide guide means 55, for example, a guide bolt 57 provided on the movable plate 52 protrudes downward through a long hole 58 in the front-rear direction of the base plate 51, and a lower end of the bolt is a slide washer (guide disk). It is configured to be screwed with a bolt 60 through 59.

  Further, as shown in FIGS. 4 to 6, the movable plate 52 is cut and raised on both the left and right sides of the vehicle front side (steering shaft 29 side), and the bent portion projects downward through the opening of the base plate 51. A spring receiver 63 is configured. The spring receiver 63 faces the support bracket 64 on the steering shaft 29 side fixed to the base plate 51, and a return spring 65 is hooked in a pair between the spring receiver 63 and the spring receiver of the support bracket 64. The movable plate 52 is always spring-biased toward the steering shaft 29 in front of the vehicle.

  The movable plate 52 is held at the basic position on the steering shaft 29 side (see FIGS. 4 and 5) by the spring action of the return spring 65 when the accelerator lever 33 is not operated (normally). The basic position of the movable plate 52 is a slide-free position where the gripping operation for pulling the accelerator lever 33 toward the grip portion 32 a of the operation handle 32 is not performed, and consequently the return position of the accelerator lever 33.

  Incidentally, as shown in FIG. 4, the accelerator lever 33 is bent in a crank shape on the left and right sides from the straight portion in the axial center portion and extends outward in the vehicle width direction, and operation portions 33a are provided at both ends. The left and right sides of the accelerator lever 33 are not limited to the crank shape, and various bar shapes are conceivable. The left and right grip portions 32 a of the operation handle 32 are located on both outer sides in the vehicle width direction of the straight portion of the accelerator lever 33. The operation portion 33a of the accelerator lever 33 is opposed to the grip portion 32a of the operation handle 32 so as to be substantially parallel to the grip portion 32a on the vehicle front side.

  Therefore, the operation portion 33a of the accelerator lever 33 is located near the grip portion 32a of the operation handle 32 and on the vehicle front side or obliquely below the front side of the grip portion 32a, so that the driver of the electric vehicle 10 can hold the grip portion 32a of the operation handle 32. The lever operation can be performed by placing one or both fingertips of both hands on the operation portion 33a of the accelerator lever 33 and pulling it (see FIG. 2).

  The lever operation of the accelerator lever 33 is performed by sliding the accelerator lever 33 forward in the direction of arrow P in FIG. 3 by a gripping operation that pulls the operation portion 33a of the accelerator lever 33 toward the grip portion 32a of the operation handle 32. When the driver releases his fingertip from the operating portion 33a of the accelerator lever 33 (the movable plate 52 slides on the base plate 51 side by the spring force of the return spring 65), the driver moves following the movable plate 52. The accelerator lever 33 is returned to the initial position corresponding to the basic position of the movable plate 52 (see FIGS. 4 and 5).

  As shown in FIGS. 4 and 5, the accelerator lever 33 has its linear portion fixed and held integrally on the movable plate 52 by left and right fixing brackets 66. The linear portion of the accelerator lever 33 is gear-coupled to a rotary variable resistor 70 via a pinion rack mechanism 69, and a contact type manipulated variable detection sensor 56 is configured by the variable resistor 70. In FIG. 6, reference numeral 71 denotes a long hole in the vehicle front-rear direction formed in the base plate 51.

  The variable resistor 70 of the operation amount detection sensor 56 is fixed to the back side of the base plate 51. A gear (pinion) 72 of the rotary variable resistor 70 is gear-coupled to a gear (rack) 73 attached to the straight portion of the accelerator lever 33, and the lever slide amount is changed according to the lever slide amount. Thus, the amount of rotation of the variable resistor 70 is detected. Therefore, the contact-type operation amount detection sensor 56 outputs a detection signal corresponding to the lever operation amount (slide amount) of the accelerator lever 33 to the travel control unit 21 (FIG. 7), thereby performing vehicle travel control.

  Note that the rack (gear) 73 of the pinion rack mechanism 69 does not necessarily have to be attached to the linear portion of the accelerator lever 33, and may be attached to the movable plate 52 side, and the degree of freedom of attachment is high. For this reason, the degree of freedom of installation of the contact-type operation amount detection sensor 56 may be on the back side of the base plate 51, and the mounting structure is highly flexible.

  Incidentally, the accelerator device 75 of the electric vehicle 10 is configured as shown in FIG. In the accelerator device 75, when the main switch 35 which is a power switch is turned on (ON operation), the travel control unit 21 is turned on. In this power-on state, a forward or reverse signal or a maximum speed setting signal is input to the travel control unit 21 by operating the forward / reverse selector switch 36 and the adjustment dial 37. The adjustment dial 37 selects a required traveling speed from several traveling speeds, for example, from 2 km / hour to 6 km / hour, and the selected traveling speed is input to the traveling control unit 21 as a maximum speed setting signal.

  Further, the accelerator lever 33 is operated when the driver performs a gripping operation with both hands or one hand to pull the operation portion 33a of the left or right of the accelerator lever 33 or one of the operation portions 33 toward the grip portion 32a side (front side) of the operation handle 32 (movable plate 52). Is moved rearward in the vehicle front-rear direction on the base plate 51), and the amount of rotation of the variable resistor 70 changes according to the lever operation amount (lever slide amount) of the accelerator lever 33. Therefore, the contact-type operation amount detection sensor 56 receives a sensor signal corresponding to the lever operation amount of the accelerator lever 33 as input to the travel control unit 21.

  When a gripping operation for pulling the accelerator lever 33 toward the front side is performed, a sensor signal corresponding to the lever operation amount of the accelerator lever 33 is input to the travel control unit 21. The travel control unit 21 performs arithmetic control of the sensor signal from the operation amount detection sensor 56 based on the input signals from the forward / reverse selector switch 36 and the adjustment dial 37 to control the electric motor 20. The electric motor 20 can rotate reversibly, and the motor control of the electric motor 20 controls the driving of the rear wheels 13 that are driving wheels so that the electric vehicle 10 travels.

  Next, the operation of the accelerator device 75 of the electric vehicle will be described.

  In the electric vehicle 10, an operation handle 32 and an accelerator lever 33 are attached to a steering mechanism portion 34 in an operation box 31 (of the handle unit 30), and the accelerator lever 33 is positioned in front of the grip portion 32 a of the operation handle 32 or near the front diagonally downward. The operation unit 33a is disposed so as to be positioned.

  In the electric vehicle 10, the movable plate 52 on the base plate 51 that serves as the base of the accelerator device 75 is not fixed to the steering shaft 29, and slides on the pace plate 51 in the vehicle longitudinal direction as shown in FIGS. 8 and 9. Installed freely. The movable plate 52 is configured to be able to slide in the P direction following a gripping operation that pulls the operation portion 33a of the accelerator lever 33 toward the grip portion 32a (near side).

  When the accelerator lever 33 is slid in the P direction, the contact variable resistor 70 is rotated by the pinion rack mechanism 69 in the accelerator device 75 in accordance with the slide amount (lever operation amount) of the accelerator lever 33. Due to the rotation of the variable resistor 70, the contact-type operation amount detection sensor 56 outputs a sensor signal to the travel control unit 21. At this time, a setting signal is also input from the forward / reverse selector switch 36 and the adjustment dial 37 to the travel control unit 21, and the travel control unit 21 travels at a travel speed set to the adjustment dial 37, for example, a travel speed of 4 km / hour. Within the range of (set maximum speed), the electric motor 20 is driven by the motor, and the rear wheel 13 of the electric vehicle 10 is driven to travel.

  In the electric vehicle 10, the electric vehicle 10 can be driven to travel for the first time by a gripping operation that draws the operation portion 33 a of the accelerator lever 33 toward the grip portion 32 a of the operation handle 32. Even if the driver performs an operation such as unexpectedly placing the hand on the accelerator lever 33 with the main switch 35 turned on and the power is turned on, the accelerator lever 33 is not operated, and the electric vehicle 10 is not operated by the driver. It can be surely prevented from moving against the intention.

  Moreover, the electric vehicle 10 according to the present embodiment causes the electric vehicle 10 to travel for the first time in response to a pull-in operation on the front side of the accelerator lever 33 that pulls the accelerator lever 33 toward the vehicle rear side, that is, the grip portion 32a side of the operation handle 32. be able to.

  In addition, the movable plate 52 is slid integrally on the base plate 51 in the vehicle longitudinal direction following the sliding operation of the accelerator lever 33. The movement of the movable plate 52 in the vehicle front-rear direction is performed in a state where the spring force of the left and right return springs 65 is applied. Since the movable plate 52 is guided in the vehicle longitudinal direction by the slide guide means 55 and the rack (gear) 73 of the pinion rack mechanism 69, the operation portion 33a of the accelerator lever 33 is connected to the grip portion 32a of the operation handle 32. The slide is always kept parallel.

  Therefore, in the lever slide method of the accelerator lever 33, the accelerator lever 33 and the movable plate 52 are always moved integrally by the sliding operation of the accelerator lever 33. Even if the accelerator lever 33 performs a gripping operation of pulling only one of the left and right sides of the operation portion 33a toward the front, the operation portion 33a of the accelerator lever 33 is always slid while being kept parallel to the grip portion 32a of the operation handle 32. . For this reason, in the gripping operation of pulling the operation portion 33a of the accelerator lever 33 forward, the left and right operation portions 33a are always slid by the same amount. Since the operation portion 33a of the accelerator lever 33 is parallel to the grip portion 32a of the operation handle 32 at the initial position, the operation portion 33a is easy to operate on either the left or right side.

  FIG. 9 shows a lever operation state in which the operation portion 33a of the accelerator lever 33 is pulled toward the front side (the grip portion 32a side of the operation handle 32). When the operation portion 33a is gripped, FIG. The electric vehicle travels at a traveling speed corresponding to the lever operation amount of the accelerator lever 33 by the accelerator device 75 shown in FIG.

  When the driver's hand is released from the gripping operation state in which the operation portion 33a of the accelerator lever 33 shown in FIG. 9 is pulled toward the front, the movable plate 52 is moved to the basic position (FIGS. 4, 5 and 5) by the spring force of the return spring 65. The accelerator lever 33 integrated with the movable plate 52 is moved to follow and is slid to the initial position side in FIG. 8 and held at the initial position.

  When the accelerator lever 33 returns to the initial position shown in FIG. 8, the electric vehicle 10 is stopped by a brake operation of a brake device (not shown).

  8 and 9, a large opening 76 is provided on the vehicle front side of the base plate 51. This opening 76 is formed to connect a harness and a connector to each switch in the operation box 31.

  FIG. 10 shows an example of a gripping operation for pulling the accelerator lever 33 toward the grip portion 32a (32b) of the operation handle 32.

  The case where the operation portion 33a of the accelerator lever 33 is located on the vehicle front side near the grip portion 32a of the operation handle 32 is indicated by a solid line, and the operation portion 33b of the accelerator lever 33 is obliquely below the vehicle front side of the grip portion 32a of the operation handle 32. The case where is located is indicated by a chain line.

  In the case of a solid line, the operation portion 33a of the accelerator lever 33 is slid in the direction along the accelerator lever long hole 77 from the initial position A to the pulling position B formed substantially horizontally on the side of the box cover of the operation box 31. Is done.

  When indicated by a chain line, the operation portion 33b of the accelerator lever 33 extends along the accelerator lever long hole 77b from the initial position Ab to a drawing position C formed so as to face substantially obliquely upward on the side of the box cover of the operation box 31. Slide operation in the direction.

  Further, various examples of the gripping operation that pulls the accelerator lever 33 toward the front include various positions including the position of the lever operating portion, the position of the grip portion of the operating handle 32, and the inclination angle of the accelerator lever long hole.

[Effect of the first embodiment]
In the accelerator apparatus for an electric vehicle shown in the first embodiment, the electric vehicle travels only by a single direction operation that pulls the operation portion 33a of the accelerator lever 33 toward the grip portion 32a of the operation handle 32 and is easy to hold. Can be driven. The operation of running the electric vehicle 10 is simple, and the start of the vehicle that is not intended by the driver can be reliably prevented.

  In addition, the accelerator lever 33 of the electric vehicle moves in the vehicle front-rear direction integrally with the movable plate 52 that slides on the fixed base plate 51, and the operation portion 33 a of the accelerator lever 33 is always parallel to the grip portion 32 a of the operation handle 32. Since the slide operation is performed while the state is maintained, the accelerator lever 33 does not move in an inclined state with respect to the slide operation direction, and the slide operation of the accelerator lever 33 is facilitated.

  Furthermore, even if the driver or caregiver accidentally accesses from above the accelerator lever 33 and touches the accelerator lever 33, the accelerator lever 33 is not operated, so the electric vehicle 10 does not start, and the vehicle Unintended travel can be reliably prevented.

  In addition, the rear surface of the rack 73 of the pinion rack mechanism 69 only needs to be attached to the movable plate 52, and since there are few restrictions on the attachment position, the degree of freedom of attachment of the pinion rack mechanism 69 is large, and as a result, the contact provided on the rear surface side of the base plate 51. The degree of freedom of installation of the operation amount detection sensor 56 of the formula can also be improved.

[Second Embodiment]
A second embodiment of an accelerator device for an electric vehicle will be described with reference to FIG.

  The entire configuration of the accelerator device for the electric vehicle shown in the second embodiment is the same as that of the electric vehicle shown in the first embodiment except for the non-contact type operation amount detection sensor 80 that detects the operation amount of the accelerator lever 33. Therefore, the same components are denoted by the same reference numerals and redundant description is omitted.

  The accelerator device 75A for an electric vehicle according to the second embodiment detects a lever operation amount of the accelerator lever 33 associated with a gripping operation for pulling the accelerator lever 33 forward by a non-contact type operation amount detection sensor 80.

  The non-contact type operation amount detection sensor 80 includes a magnetic force detection sensor 82 installed on the back side of the base plate 51 and a magnet 81 (may be an electromagnet) facing the magnetic force detection sensor 82. The magnet 81 is fixed to a movable plate 52 that can slide on the base plate 51 in the vehicle longitudinal direction. The magnet 81 is attached to the back surface side of the movable plate 52, protrudes downward through a long hole 71 in the vehicle front-rear direction of the base plate 51, and faces the magnetic force detection sensor 82.

  An accelerator lever 33 is integrally fixed to the movable plate 52. When the accelerator lever 33 is slid in the P direction by a gripping operation that pulls the operation portion 33a of the accelerator lever 33 toward the front, the accelerator lever 33 follows the accelerator lever 33. The movable plate 52 slides integrally, and the magnet 81 moves relative to the magnetic force detection sensor 82. The magnetic force detection sensor 82 can detect the lever operation amount of the accelerator lever 33 by detecting a change in magnetic force accompanying the movement of the magnet 81.

  In the second embodiment, the non-contact type operation amount detection sensor 80 has been described in which the magnet 81 is provided on the movable plate 52 side and the magnetic force detection sensor 82 is provided on the base plate 51 side. It is good also as a non-contact type which provided the magnet and provided the magnetic force detection sensor in the movable side mechanical plate (movable plate 52).

  The non-contact type operation amount detection sensor 80 detects a change in magnetic force according to the slide amount of the accelerator lever 33 and causes the traveling control unit 21 to input the detection signal, thereby allowing the electric vehicle 10 to travel.

[Effects of Second Embodiment]
The accelerator device 75A of the electric vehicle according to the second embodiment also has the same effects as the accelerator device 75 according to the first embodiment, and the non-contact type operation amount detection sensor 80 can be attached with a large degree of freedom of installation.

  As described above, in the embodiment of the present invention, the example in which the electric vehicle is applied to the electric four-wheel vehicle has been described. However, the embodiment can also be applied to a three-wheel vehicle. Further, each embodiment is presented as an example, and is not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention.

  DESCRIPTION OF SYMBOLS 10 ... Electric vehicle (handle-type electric wheelchair), 11 ... Body frame, 12 ... Front wheel, 13 ... Rear wheel, 15 ... Body cover, 16 ... Front body cover, 17 ... Step floor, 18 ... Rear body cover, 20 ... Electric motor, 21 ... running control unit, 22 ... seat, 23 ... backrest, 24 ... armrest, 25 ... wheelchair, 27 ... handle post, 29 ... steering shaft, 30 ... handle unit, 31 ... control box, 32 ... control handle, 32a ... grip part, 33 ... accelerator lever, 33a ... operating part, 34 ... steering mechanism part, 35 ... main switch (power switch), 36 ... forward / reverse selector switch, 37 ... adjustment dial, 50 ... box cover, 51 ... base plate 52 ... movable plate (mechanical plate), 55 ... slide guide means, 56 ... manipulated variable Out sensor, 65 ... Return spring, 66 ... Fixed bracket, 69 ... Pinion rack mechanism, 70 ... Variable resistor, 72 ... Gear (pinion), 73 ... Gear (rack), 75, 75A ... Accelerator device, 76 ... Opening, 77 ... Accelerator lever oblong hole, 80 ... (Non-contact type) manipulated variable detection sensor, 81 ... Magnet, 82 ... Magnetic force detection sensor.

Claims (5)

In an accelerator device for an electric vehicle that drives the electric vehicle,
A steering mechanism unit for steering the electric vehicle, comprising an operation handle held by a driver;
An accelerator lever provided in the steering mechanism and capable of traveling the electric vehicle by an operation of pulling it toward the operation handle;
An accelerator device for an electric vehicle, comprising: a travel control unit that causes the electric vehicle to travel based on an operation amount of the accelerator lever. 2. The accelerator device for an electric vehicle according to claim 1, wherein the accelerator lever is provided in front of the grip portion or in front of the grip in the vicinity of the grip portion of the operation handle. The steering mechanism is provided in an operation box of the handle unit,
A base plate fixed to the upper end of the steering shaft in the operation box;
The accelerator apparatus for an electric vehicle according to claim 1, further comprising a movable plate slidably supported on the base plate. An operation handle fixed to the base plate of the steering mechanism,
An accelerator lever fixed to the movable plate of the steering mechanism,
The accelerator apparatus for an electric vehicle according to claim 1, wherein the base plate is provided to be inclined downward toward the rear of the vehicle. The accelerator device for an electric vehicle according to any one of claims 1, 3, and 4, wherein the steering mechanism unit includes a contact-type or non-contact-type operation amount detection sensor that detects a lever operation amount of an accelerator lever. .

Images