JP3875830B2 - Electric vehicle drive operation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drive operation device for an electric vehicle for operating a motor drive in an electric vehicle such as an electric wheelchair or a senior car.
[0002]
[Prior art]
In general, a senior car used by an elderly person with a disability to move is driven by a motor to be steered by a steering wheel and adjusted in speed by an accelerator. In addition, since the maximum speed of a normal senior car is extremely low, there is no means for forcibly stopping the wheel like a brake provided in an automobile or the like, and the senior car is stopped by stopping the rotation of the motor. It is configured to stop.
[0003]
Here, in order to make it easy for elderly people who have difficulty in driving the legs, the rotation speed of the motor is conventionally controlled by rotating the shaft disposed in the vicinity of the steering wheel around the shaft, and the shaft is installed in the driver's seat. There has been provided a drive operation device configured to stop the motor when pulled to the side.
[0004]
The operation of the shaft is performed by operating means whose base end is fixed to the right end portion of the shaft (when viewed from the driver's seat side) and whose distal end protrudes toward the driver's seat side, and when the distal end of the operating means is moved up and down When the shaft is rotated about its axis and the tip is pulled forward, the shaft is rotated rightward about its longitudinal center as an axis, and the shaft can be pulled toward the driver's seat. As for the rotation of the shaft, the rotation from the neutral position to the right is allowed as described above, and the rotation to the left is restricted.
[0005]
[Problems to be solved by the invention]
In the above-described conventional drive operation device for an electric vehicle, the operating means is attached to the right end of the shaft and is set for a driver who operates with the right hand, so that it is set for a driver who operates with the left hand. Needs to replace the operating means with the left end of the shaft. In other words, the operating means is designed so that the driver can operate by extending his / her finger while holding the handle, so that when the operating means is attached to the right end of the shaft, it cannot be operated with the left hand. is there.
[0006]
However, when the operating means is replaced with the left end of the shaft, the rotation direction around the shaft axis is the same, but the rotation direction of the shaft during the motor stop operation is reversed (rotation leftward from the neutral position). Therefore, the rotation is restricted and the motor stop operation cannot be performed. Therefore, since it is necessary to prepare a separate unit for the operator with the left hand, there is a problem that it is difficult to switch between the driver for the driver operating with the right hand and the driver for the driver operating with the left hand. It was.
[0007]
The present invention has been made in view of such circumstances, and provides a drive operation device for an electric vehicle that can easily switch between a driver for a right-handed driver and a driver for a left-handed driver. There is to do.
[0008]
[Means for Solving the Problems]
The invention described in claim 1 is a drive operation device for an electric vehicle that obtains a drive force by a motor, and is disposed in the drive operation device body (7) that rotates together with the handle, and in the drive operation device body (7). The switching body (8) that can rotate relative to the drive operation device main body (7) and the driver for the right hand and the driver for the left hand can be easily switched. to order, the driving in a state of extending in the rotational direction protrudes through a long hole formed in the rotating body (8) (15), and the long hole (15) of said rotating body (8) Whether it should be set for a driver who operates with the right hand or a driver who operates with the left hand when the rotating body (8) is in the neutral position. based, one end or the other of the slot and the projecting means (13) (15) A restriction that regulates the rotation of the rotating body in the opposite direction while changing the direction in which the rotating body (8) can be rotated from the neutral position by selecting and forming at any position of the end. And a shaft (9) which is attached to the rotating body (8) while being allowed to rotate around the shaft and is rotatable together with the rotating body (8), and is operated for a driver who operates with the right hand or with a left hand. The base end is fixed to either the left or right end of the shaft (9), the front end protrudes toward the driver's seat, and the front end is moved up and down based on which of the drivers should be set. The shaft (9) can be rotated about its axis, and the rotating body (8) together with the shaft (9) is pulled with respect to the drive operation device main body (7) by pulling the tip toward the driver's seat side. Can be rotated relatively The operating means (10), the accelerator means (11) for controlling the driving force of the motor based on the rotation around the axis of the shaft (9), and the rotating body (8) with respect to the drive operating device main body (7) And a stop means for detecting the relative rotation and forcibly stopping the electric vehicle by stopping the driving of the motor by the detection.
[0009]
According to this configuration, when the rotating body is in the neutral position, if the protruding means is formed at one or the other end of the elongated hole, the rotating body is allowed to rotate toward the formed side. However, the rotation to the opposite side is restricted by the interference between the protruding means and one end of the elongated hole.
[0010]
The invention according to claim 2 is characterized in that the protruding means is a screw fixed to the rotating body.
[0011]
According to such a configuration, the direction in which the rotating body can be rotated from the neutral position can be selected by inserting / removing a screw into one end or the other end of the elongated hole.
[0012]
The invention according to claim 3 is characterized in that, instead of the elongated hole, a notch obtained by notching a part of the rotating body is provided.
[0013]
According to this configuration, if the protruding means is formed at one or the other end of the notch when the rotating body is in the neutral position, the rotating body is allowed to rotate toward the formed side. Rotation to the opposite side is regulated by interference between the projecting means and one end of the notch.
[0014]
The invention according to claim 4 comprises a return means for returning the rotating body (8) to the neutral position after the rotating body (8) has rotated, and the returning means comprises the rotating body (8). ) , A compression spring (17) inserted into a through-hole (16) penetrating through the two), two rollers (21a, 21b) formed at both ends of the compression spring (17), and the rollers (21a, 21b) together but allowing the protruding to a state of predetermined dimensions protruding from the through hole (16) made from a roller regulating portion for regulating the more protruding (16a), the roller in the drive operation device body (7) ( 21a, 21b), the inner wall surface (8c) is shaped so as to press one of the rollers (21a, 21b) according to the direction of rotation when the rotating body (8) rotates. It is formed, the one By pressing the square rollers compressing the compression spring (17), characterized in that to return the rotating body (8) to the neutral position by the restoring force.
[0015]
According to this configuration, when the rotating body rotates in one direction, only one roller is pressed from the inner wall surface of the drive operation device main body to compress the compression spring, and the restoring force causes the rotating body to be neutral. Return to position. When the rotating body rotates in the other direction, only the other roller is pressed from the inner wall surface of the drive operating device main body to compress the compression spring, and the restoring force returns the rotating body to the neutral position. The roller that is not pressed remains in a state of protruding by a predetermined dimension by the roller restricting portion.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
As shown in FIG. 10, the senior car to which the drive operation device for an electric vehicle according to the present embodiment is applied has a seat 2 a, wheels 3, a handle 4, a drive operation device 5, and a motor 6 on the vehicle body 2. After the driver is seated on the seat 2, when the drive operating device 5 is operated while holding the handle 4, the wheel 3 is rotated by the motor 6 to advance the senior car 1.
[0017]
The steering wheel 4 steers the senior car 1 by the operation of the driver. As shown in FIG. 3, when the annular gripping portion is rotated, the direction of the front wheels of the wheels 3 of the senior car 1 can be changed. It is configured as follows. A drive operation device 5 for controlling the drive of the motor 6 is disposed at the approximate center in the handle 4 so that the driver can operate the drive operation device 5 while holding the handle 4. ing.
[0018]
As shown in FIGS. 1 and 2, the drive operation device 5 according to the present embodiment includes a drive operation device main body 7, a rotating body 8, a shaft 9, an operation means 10, a potentiometer 11 as an accelerator means, It mainly comprises a stopping means 12, a regulating means including a screw 13 as a protruding means, and a returning means 14.
[0019]
The drive operation device main body 7 is connected to the lower portion of the handle 4 by a connector 4a (see FIG. 3), rotates together with the handle 4, and can hold the rotating body 8 on the upper portion thereof. The drive operation device main body 7 includes a lid portion 7a for covering the rotating body 8, and prevents rainwater and dust from entering from the outside.
[0020]
As shown in FIG. 5, the rotating body 8 is disposed in the drive operation device main body 7 and is rotatable relative to the drive operation device main body 7. If 13 is not formed, it is arranged so that both the right direction a and the left direction b can rotate within the lid portion 7a. In addition, a through hole 16 that penetrates the side surface 8a and the side surface 8b is formed in the rotating body 8, and a return means 14 to be described later is disposed.
[0021]
The shaft 9 is attached to the rotating body 8 while being allowed to rotate around the axis, and a washer 18 is disposed at a fixed portion between the shaft 9 and the rotating body 8. A return spring 20 having one end fixed to a pin 19 formed on the shaft 9 and the other end fixed to one part of the rotating body 8 is disposed at a substantially central portion in the axial direction of the shaft 9.
[0022]
When the shaft 9 rotates about its axis, the return spring 20 can generate a reverse rotational force with an urging force, and the driver releases his hand from the operation means 10 to reduce the rotational force on the shaft 9. If it cancels | releases, it can be set as the structure which the shaft 9 returns to an initial position naturally.
[0023]
The operating means 10 has a base end 10a fixed to the right end of the shaft 9 (when viewed from the driver's seat side), a tip 10b having an L-shape (see FIG. 3), and protruding toward the driver's seat. When the shaft 10b is moved up and down, the shaft 9 can be rotated around its axis. The tip 10b is pulled toward the driver's seat and the rotating body 8 is rotated relative to the drive operation device main body 7 together with the shaft 9. It is possible to make it.
[0024]
That is, as shown in FIG. 4, when the operating means 10 is pulled in the direction c from the state where the shaft 9 is in a neutral position (a state extending substantially rightward in the figure), the rotating body 8 is relative to the drive operating device body 7. It is configured to rotate in the right direction a. A return means 14 is provided to return the shaft 9 to the neutral position when the driver releases the operation means 10.
[0025]
The return means 14 includes a compression spring 17 inserted into the through hole 16 of the rotating body 8, two rollers 21 a and 21 b formed at both ends of the compression spring 17, and the rollers 21 a and 21 b from the through hole 16. It consists of a roller restricting portion 16a (see FIG. 5) that allows the protrusion to protrude to a predetermined dimension and restricts further protrusion. When the rotating body 8 rotates in the drive operating device body 7, An inner wall surface 8c shaped to press either one of the rollers 21a or 21 according to the rotation direction is formed.
[0026]
As a result, as shown in FIG. 6, when the rotating body 8 rotates in the direction a, only the roller 21a is pressed from the inner wall surface 8c of the drive operating device main body 7 to compress the compression spring 17, thereby The rotating body 8 is returned to the neutral position by the restoring force in the d direction. Conversely, as shown in FIG. 7, when the rotating body 8 rotates in the direction b, only the roller 21 b is pressed from the inner wall surface 8 c of the drive operation device body 7 to compress the compression spring 17. The rotating body 8 is returned to the neutral position by the restoring force in the e direction. The roller 21a or 21b on the non-pressed side remains in a state protruding by a predetermined dimension by the roller restricting portion 16a, and is configured not to generate a restoring force on the rotating body 8.
[0027]
The potentiometer 11 is composed of a variable resistor, and controls the driving force (number of rotations) of the motor 6 based on the rotation of the shaft 9 around its axis. As shown in FIG. 23 is arranged to mesh with the gear 24 of the potentiometer 11. Accordingly, the gear 24 rotates according to the rotation angle of the shaft 9 and the resistance value of the potentiometer 11 is changed, so that a current having a desired magnitude can be supplied to the motor 6. Since the rotation speed (driving force) of the motor 6 is controlled by the magnitude of the current, the speed of the senior car 1 can be adjusted.
[0028]
The stopping means 12 includes a micro switch. When the micro switch detects the rotation of the rotating body 8 (both right rotation a and left rotation b), current is supplied to the motor 6. Is configured to shut off. Thus, when the supply of current to the motor 6 is interrupted, the senior car 1 stops.
[0029]
The restricting means is mainly composed of a long hole 15 formed in the rotating body 8 and a screw 13 formed in the drive operation device main body 7, and the operation means 10 is fixed to one end of the shaft 9. This is for restricting the rotation of the rotating body 8 in the opposite direction while changing the direction in which the rotating body 8 can be rotated from the neutral position in the case where it is fixed to the other end.
[0030]
As shown in FIG. 8, the long hole 15 is a through-hole penetrating the upper and lower surfaces of the rotating body 8 and is formed to extend in the rotating direction, and is driven in a state where the rotating body 8 is in the neutral position. Attachment holes 22a and 22b for attaching screws 13 are formed at positions corresponding to one end 15a and the other end 15b of the long hole 15 in the operating device body 7.
[0031]
Thereby, it is possible to select whether the screw 13 is attached to either one end 15a (ie, the attachment hole 22a) or the other end 15b (ie, the attachment hole 22b) of the elongated hole 15, for example, the screw 13 Is attached to the mounting hole 22a, while allowing the rotating body 8 to rotate in the right direction a, the screw 13 and one end 15a of the elongated hole 15 interfere with rotation in the left direction b. When the rotation is restricted and the screw 13 is mounted in the mounting hole 22b, the rotation of the rotating body 8 in the left direction b is permitted, while the rotation of the screw 13 and the elongated hole 15 is allowed for the rotation in the right direction a. The other end 15b interferes and its rotation is restricted.
[0032]
In place of the long hole 15 formed in the rotating body 8, a notch 15 'is formed in the rotating body 8 as shown in FIG. 9, and both ends (15a' and 15b 'in the figure) of the notch 15' are formed. You may comprise so that the screw | thread 13 can be selectively attached to a corresponding position. Further, as a means for restricting the rotation of the rotating body 8, any means other than the screw 13 may be used as long as it protrudes through the long hole 15.
[0033]
According to the drive operation device 5 having the above-described configuration, the rotating body 8 can be rotated from the neutral position in different directions depending on whether the operating means 10 is fixed to the right end portion of the shaft 9 or the left end portion. Since the rotation of the rotating body 8 in the opposite direction can be restricted, it is easy to switch between the one set for the driver operating with the right hand and the one set for the driver operating with the left hand. Can be.
[0034]
Moreover, since the return to the neutral position after the rotating body 8 is rotated is performed by one compression spring 17, the one for the driver who operates with the right hand and the one for the driver who operates with the left hand Since the return force can be made equal to each other and no separate adjustment is required, these switching operations can be facilitated.
[0035]
Although the present embodiment has been described above, the present invention is not limited to this, and can be applied to, for example, other types of senior cars and drive operation devices for electric wheelchairs. Further, the means for restricting the rotation of the rotating body is the direction in which the rotating body can rotate from the neutral position when the operating means is fixed to one end of the shaft and when the operating means is fixed to the other end. Any other means may be used as long as it regulates the rotation of the rotating body in the opposite direction.
[0036]
【The invention's effect】
According to the invention of claim 1 or claim 3, by providing the restricting means, the drive operation device for the electric vehicle for the driver operated with the right hand and the drive operation device for the electric vehicle for the driver operated with the left hand. Can be easily switched. In particular, a driver who operates with a left hand and an electric vehicle drive operating device for a driver who operates with the right hand simply by selecting a long hole or a notch in the rotating body and selecting which of the ends to form the protruding means. Therefore, it is possible to switch between them with a simple configuration.
[0037]
According to the second aspect of the present invention, since the protruding means is a screw, it is possible to more easily and easily restrict the rotational direction of the rotating body in the drive operation device.
[0038]
According to the invention of claim 4, since the same return means is used for both the driver operating with the right hand and the driver operating with the left hand, the return force when these are switched is equivalent, This adjustment can be made unnecessary.
[Brief description of the drawings]
FIG. 1 is a side perspective view showing a drive operating device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 4 is a side view showing an operation in the drive operation device according to the embodiment of the present invention. FIG. 5 is a plan view showing a rotating body in the drive operation device according to the embodiment of the invention. FIG. 6 is a schematic diagram showing the operation of the return means in the drive operating device according to the embodiment of the present invention. FIG. 7 is a schematic diagram showing the operation of the return means in the drive operating device of the embodiment according to the present invention. FIG. 9 is a schematic diagram showing another regulating means in the drive operating device according to the embodiment of the present invention. FIG. 10 is a schematic diagram showing another regulating means in the drive operating device according to the embodiment of the present invention. Form drive operation device is applied Perspective view of a mobility scooter EXPLANATION OF REFERENCE NUMERALS
1 ... Senior car (electric car)
DESCRIPTION OF SYMBOLS 2 ... Car body 2a ... Seat 3 ... Wheel 4 ... Handle 5 ... Drive operation device 6 ... Motor 7 ... Drive operation device main body 7a ... Cover part 8 ... Rotating body 8a, 8b ... Side surface 8c ... Inner wall surface 9 ... Shaft 10 ... Operation means 10a ... Base end 10b ... Tip 11 ... Potentiometer (accelerator means)
12 ... Stopping means 13 ... Screw (protruding means)
14 ... Return means 15 ... Long holes 15a, 15a '... One end 15b, 15b' ... The other end 15 '... Notch 16 ... Through hole 16a ... Roller restricting part 17 ... Compression spring 18 ... Washer 19 ... Pin 20 ... Return Spring 21a, 21b ... Roller 22a, 22b ... Mounting hole 23, 24 ... Gear a ... Right direction b ... Left direction

Claims (4)

A drive operation device for an electric vehicle that obtains a driving force by a motor,
A drive operation device body (7) that rotates together with the handle;
A rotating body (8) disposed in the drive operating device main body (7) and rotatable relative to the drive operating device main body (7);
In order to facilitate switching between a driver for the driver operating with the right hand and a driver for the driver operating with the left hand, the rotating body (8) is formed in the rotating body (8) extending in the rotating direction. And a projecting means (13) that can be formed in the drive operating device main body in a state of projecting through the elongated hole (15), and the rotating body (8) is in a neutral position. Depending on whether the driver is to be operated with the right hand or the driver to be operated with the left hand, the protruding means (13) is set to either one end or the other end of the long hole (15). A regulating means for regulating the rotation of the rotating body in the opposite direction to the rotating body (8) while changing the direction in which the rotating body (8) can be rotated from the neutral position.
A shaft (9) which is attached to the rotating body (8) while being allowed to rotate around an axis, and is rotatable together with the rotating body (8);
Based on whether the driver is to be operated with the right hand or the driver to be operated with the left hand, the base end is fixed to the left or right end of the shaft (9) and the front end is on the driver's seat side. When projecting and moving the tip up and down, the shaft (9) can be rotated about its axis, and the tip (9) is pulled together with the shaft (9) to rotate the rotating body (8). Operating means (10) that can be rotated relative to the drive operating device body (7),
Accelerator means (11) for controlling the driving force of the motor based on rotation around the axis of the shaft (9);
Stop means for detecting the relative rotation of the rotating body (8) with respect to the drive operating device main body (7), and forcibly stopping the electric vehicle by stopping the driving of the motor by the detection;
An electric vehicle drive operating device comprising:   The drive operation device for an electric vehicle according to claim 1, wherein the protruding means (13) is a screw fixed to the rotating body (8).   The drive operation of the electric vehicle according to claim 1 or 2, further comprising a cutout (15 ') in which a part of the rotating body (8) is cut out instead of the long hole (15). apparatus. After the rotating body (8) is rotated, the rotating body (8) includes a returning means for returning the rotating body (8) to a neutral position.
A compression spring (17) inserted in a through-hole (16) penetrating the rotating body (8);
Two rollers (21a, 21b) formed at both ends of the compression spring (17);
A roller restricting portion (16a) for allowing the rollers (21a, 21b) to protrude from the through hole (16) to a state protruding by a predetermined dimension, and for restricting further protrusion;
When the rotating body (8) rotates at a portion facing the rollers (21a, 21b) in the drive operation device main body (7), one of the rollers (21a) corresponding to the rotating direction is rotated. , 21b) is formed, and the compression spring (17) is compressed by pressing one of the rollers, and the rotating body (8) is returned to the neutral position by its restoring force. The drive operation device for an electric vehicle according to any one of claims 1 to 3, wherein the drive operation device is an electric vehicle.

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