JP3151528B2 - Output adjustment device for electric vehicles - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an output adjustment device for an electric vehicle driven by a motor, and more particularly, to a mounting structure of a potentiometer for adjusting a speed by increasing or decreasing drive power. .

[Conventional technology]

2. Description of the Related Art Conventionally, an electric motorcycle that runs by a motor has a motor that is started and stopped by a switch that is interlocked with the turning operation of a handle grip, as disclosed in, for example, Japanese Utility Model Publication No. 50-39943. is there. The switch is configured to open and close a motor drive circuit, and has a fixed contact fixed to a handlebar, and a movable contact fixed to a handle grip rotated with respect to the handlebar. However, it is difficult to drive simply by starting and stopping the motor. Some electric motorcycles that solve this problem adjust the speed by increasing or decreasing the drive power supplied to the motor using a potentiometer. This potentiometer is located near the motor, and its movable part is
It was connected via wires to a throttle grip, a throttle lever, etc., which were rotatably provided on the handlebar. That is, the speed is adjusted by turning the throttle grip, the throttle lever, and the like to pull and return the wire.

[Problems to be solved by the invention]

However, when such a wire-operated potentiometer is used, an operation-direction changing mechanism for rotating the movable member of the potentiometer by changing the reciprocating operation of the wire into a rotating operation must be mounted on the vehicle body together with the potentiometer. Therefore, a large space for installing the potentiometer must be provided. For this reason, in an electric motorcycle in which the speed is adjusted by a potentiometer,
There is a problem in that the degree of freedom in designing the vehicle body is impaired due to the above-mentioned relationship of the installation space of the potentiometer. Further, the structure in which the potentiometer is operated by a wire has a problem that the number of parts increases and the response of the motor decreases.

[Means for solving the problem]

The output adjusting device for an electric vehicle according to the present invention is configured such that a tubular tube guide to which a handle grip is fitted is rotatably mounted on an outer end portion of a steering handlebar, and a switch is provided inside the vehicle body from the handle grip. A power adjustment device for an electric vehicle, comprising a holder, and a potentiometer for increasing / decreasing drive power supplied from a battery to a traveling motor inside the switch holder, wherein the potentiometer is defined by an axis of the handlebar. A fixed-side member having a disk extending in a direction orthogonal to the fixed-side member, a disk facing the disk of the fixed-side member, and an extension-side end of the tube guide extending into the switch holder. The fixed side member is fixed to a handlebar, and the movable side member is rotated by the fixed side member. A contact is provided on an end surface of the disk of the fixed member facing the movable member, and a contact slidably contacting the contact is provided on an end surface of the disk of the movable member facing the fixed member. The lead wire connected to the contact is wired along the handlebar.

(Operation)

The movable side member of the potentiometer is directly rotated by the handle grip.

Further, the disk and the contact of the fixed-side member and the disk and the contact of the movable-side member are arranged in the axial direction of the handlebar,
In addition, since the lead wire can be wired in a straight line along the handlebar, the handle portion can be formed compact while adopting a structure in which the potentiometer is provided on the handle portion.

Furthermore, since the fixed side member is fixed to the handlebar and the movable side member is rotatably supported by the fixed side member, the contact can be accurately positioned so that the contact can correctly contact the contact.

〔Example〕

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

FIG. 1 is a cross-sectional view showing an output adjusting device for an electric vehicle according to the present invention, FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 1 is a block diagram of a controller used for an output adjustment device for an electric vehicle according to the present invention. In these figures,
Reference numeral 1 denotes a steering handlebar of an electric vehicle such as an electric motorcycle. Reference numeral 2 denotes a potentiometer as an output adjusting device main body for increasing or decreasing the speed of the electric vehicle. The potentiometer 2 is mounted on an outer end of the handlebar 1. This potentiometer 2 is composed of a variable resistor having a fixed member 3 and a movable member 4, detects the position of the movable member 4 with respect to the fixed member 3, and adjusts the position signal (throttle position signal) to speed. Output to the controller 5 for use.

The fixed side member 3 includes a main body 6 entirely formed of a synthetic resin into a substantially cylindrical shape with a bottom, and an annular cover 7 screwed to the main body 6 so as to close the opening side of the main body 6. And is fixed to the handlebar 1 in a state where rotation in the circumferential direction is prevented by the switch holder 8.
The bottom of the main body 6 constitutes a disk of the fixed member 3 according to the present invention. The fixed position of the fixed member 3 is
The axis is set so as to coincide with that of the handlebar 1. In addition, a stopper 6a is provided on the inner bottom of the main body 6 so as to protrude from the inner bottom of the main body 6 to keep a rotation range of a movable member described later at a predetermined angle. Reference numerals 9 and 10 are contacts with which contacts of a movable member to be described later are in sliding contact. These contacts 9 and 10 are formed by resistors, and are disposed on the inner bottom surface of the bottomed cylindrical main body 6. As shown in FIG. 2, these contacts 9 and 10 extend in the circumferential direction of the main body 6 and are formed to be elongated, and they are separated at a fixed interval. Output terminals 11 and 12 are connected to the contacts 9 and 10 via lead wires 9a and 10a, respectively. These output terminals 11 and 12 are connected to the controller 5. The lead wires 9a, 10a
As shown in FIG. 1, wiring is performed along the handlebar. The switch holder 8 is, for example, a two-part switch which is fixed to the handlebar 1 so as to sandwich the handlebar from above and below.

The movable-side member 4 includes a disk portion 4a located in the fixed-side member 3, and a boss portion provided on the inner peripheral side of the disk portion 4a.
4b and 4c, and are integrally formed of a synthetic resin. A stopper 4d that comes into contact with a stopper 6a is provided on a portion of the disc portion 4a facing the bottom of the main body 6.
Are protruding. The movable member 4 is rotatably supported by the fixed member 3 via bearings 13 and 14 mounted on the bosses 4b and 4c. The outer ring of the bearing 13 is fitted to the inner peripheral portion of the main body 6, and the outer ring of the bearing 14 is fitted to the inner peripheral portion of the cover 7.
Dust seals 15 are interposed in outer portions (portions on the opening ends of the boss portions 4b and 4c).
The dust seal 15 and the movable member 4 seal the inner peripheral opening of the fixed member 3. Further, a contact 16 which is in sliding contact with the contacts 9 and 10 is attached to the disk portion 4a of the movable side member 4. The contact 16 is configured to simultaneously contact the contacts 9 and 10 to make them conductive. In addition, the movable member 4 configured as described above is provided with a return spring (not shown) between the movable member 4 and the fixed member 3, and is attached in the return direction (clockwise in FIG. 2) by the return spring. It is being rushed.

Reference numeral 17 denotes a tube guide for rotating the movable member 4 described above. The tube guide 17 is formed in a substantially cylindrical shape as a whole, and the handle bar 1 is inserted into a hollow portion thereof so that the handle bar 1 is rotatable. It is supported by. That is, the tube guide 17 and the movable member 4 are arranged on the same axis. The movable side member 4 is connected to an extended end of the tube guide 17 extending into the switch holder 8. Tube guide
As shown in FIG. 2, the connection structure between the movable member 4 and the movable member 4 has a structure in which a ridge 4e projecting from the inner peripheral portion of the movable member 4 is fitted into a concave groove 17a of the tube guide 17. The movable side member 4 is configured to rotate together by rotating the tube guide 17. A circular partition plate 18 is provided at a portion of the tube guide 17 that penetrates through the switch holder 8 to prevent rainwater, dust, and the like from entering the potentiometer 2 from here. The outer peripheral portion of the circular partition plate 18 is inserted into an annular groove 8a formed on the side of the switch holder 8. Reference numeral 19 denotes a handle grip. The handle grip 19 is formed of a rubber material or the like, and is fitted on the outer peripheral portion of the tube guide 17. That is, by rotating the handle grip 19, the handle grip 19, the tube guide 17, and the movable member 4 are integrally rotated. As the movable member 4 rotates, the contact 16 slides on the contacts 9 and 10, and the resistance value of the circuit formed by these contacts changes. Therefore, by rotating the handle grip 19, a throttle position signal indicating the position of the movable member 4 is output to the controller 5.

The controller 5 is connected to the battery 20, the traveling motor 21, the main switch 22 and the like as shown in FIG. 3, and is configured to adjust the output of the motor in accordance with the throttle position signal from the potentiometer 2. . 23 is the CPU built in this controller 5, 24 is A / D
In the converter, a throttle signal from the potentiometer 2 is input to the CPU 23 via the A / D converter 24. 25 is a PWM for motor control output from the CPU 23.
This is a current amplifying circuit that increases / decreases a motor drive current by a signal. Further, the CPU 23 is configured to cut off the power supply to the motor 21 when the side stand or the main stand is standing up.Moreover, in order to prevent the main switch 22 from being forgotten to be turned off, each of the CPUs 23 is turned on. When the stand is raised, an alarm chime is sounded. 26 is a side stand switch for detecting whether the side stand is standing up, 27 is a main stand switch for detecting whether the main stand is standing up, and 28 is a chime. The chime 28 is connected to the CPU 23 via a timer 29. In this embodiment, the chime 28 sounds for 5 minutes in order to prevent the battery 20 from being wasted. The chime 28 is stopped by turning off the main switch 22. Reference numeral 30 denotes a kill switch.

In order to incorporate the output adjusting device for an electric vehicle configured as described above into the handlebar 1, first, the potentiometer 2 is assembled, and the potentiometer 2 is assembled together with the tube guide 17.
Attach to Then, the fixed side member 3 of the potentiometer 2 is fixed to the handlebar 1 by the switch holder 8, and finally the handle grip 19 is attached to the tube guide 17, and the assembling operation is completed. To assemble the potentiometer 2, first, the main body 6 of the fixed member 3 supports the movable member 4 via the bearing 13. In this case, the dust seal 15 is previously interposed in the bearing fitting portion. Next, the cover 7 is fixed to the main body 6, and the boss portion 4 c of the movable member 4 is supported on the inner peripheral portion of the cover 7 via the bearing 14. Also at this time, the dust seal 15 is previously interposed in the bearing fitting portion. Thus, the potentiometer 2 is assembled.

Therefore, in the output adjusting device for an electric vehicle according to the present invention, since the movable member 4 of the potentiometer 2 is directly rotated by rotating the handle grip 19, the installation space of the potentiometer 2 is within the switch holder 8. Smaller volumes such as can be utilized. Further, the bottom of the main body 6 of the fixed side member 3 and the contacts 9,
10 and the disk portion 4a of the movable member 4 and the contact 16 are arranged in the axial direction of the handlebar 1, and the leads 9a, 10a connected to the contacts 9, 10 are straightened along the handlebar 1. Since the wires are wired in a shape, the handle portion can be formed compact while adopting a structure in which the potentiometer 2 is provided on the handle portion.

Further, since the fixed side member 3 is fixed to the handlebar 1 and the movable side member 4 is rotatably supported by the fixed side member 3, the contact 16 is in contact with the contacts 9, 10 so as to be correctly contacted. The child 16 can be accurately positioned.
For this reason, the accuracy of the potentiometer can be improved.

Further, as shown in this embodiment, the potentiometer 2
Is assembled as a single unit and then attached to the handlebar 1, so that the assembling work is simplified and the workability can be improved. Furthermore, since the unitized potentiometer 2 is surrounded by other members (the switch holder 8, the tube guide 17, etc.), it is easy to secure the sealing property, and it is difficult for rainwater, dust and the like to enter the potentiometer 2. .

In this embodiment, the movable side member 4 is connected to the tube guide 17.
Although an example in which the movable side member and the tube guide are formed separately from each other is shown in FIG. 4, the movable side member and the tube guide may be integrally formed as shown in FIG.

FIG. 4 is a cross-sectional view showing another embodiment using a potentiometer integrated with a tube guide. In FIG. 4, the same or equivalent members as those described in FIGS. 1 to 3 are denoted by the same reference numerals. Detailed description is omitted.
In FIG. 4, 31 is a fixed side member of the potentiometer 2,
32 indicates a movable side member. The fixed side member 31 is composed of a disk portion 31a provided with the contacts 9, 10 and whose rotation is prevented by the switch holder 8, and a cylindrical portion 31b through which the handlebar 1 penetrates. The movable side member 32 includes a bottomed cylindrical portion 32a provided with the contact 16 and a cylindrical portion 31b of the fixed side member 31.
And a cylindrical portion 32b to which the handle grip 19 is attached rotatably. Further, the fixed side member 31 and the movable side member 32 are each integrally formed of synthetic resin. The opening edge of the bottomed cylindrical portion 32a of the movable member 32 is slidably supported by the outer peripheral portion of the disk portion 31a of the fixed member 31.

Even with such a structure, the movable side member 32 rotates with respect to the fixed side member 31 by rotating the handle grip 19, so that the operation can adjust the speed of the vehicle.

〔The invention's effect〕

As described above, the output adjusting device for an electric vehicle according to the present invention is configured such that a tubular tube guide to which a handle grip is fitted is rotatably mounted on the outer end of a steering handlebar, An output adjustment device for an electric vehicle, further comprising a switch holder provided inside the vehicle body, and a potentiometer for increasing / decreasing drive power supplied from a battery to a traveling motor inside the switch holder. A fixed-side member having a disk extending in a direction perpendicular to the axis of the bar; a disk facing the disk of the fixed-side member; and an extension extending into the switch holder in the tube guide. And a movable-side member provided at the installation-side end portion. The fixed-side member is fixed to the handlebar, and the fixed-side member is The movable-side member is rotatably supported, and a contact is provided on an end surface of the disk of the fixed-side member facing the movable-side member, and a contact slidably contacting the contact is opposed to the fixed-side member of the disk of the movable-side member. On the end face
Since the lead wire connected to the contact is wired along the handlebar, the fixed member and the movable member constitute a potentiometer, and the movable member of the potentiometer is directly rotated by the handle grip. In addition, the contact comes into contact with the contact correctly.

As a result, the movable member of the potentiometer can be rotated without using a wire or a moving direction changing mechanism, and the accuracy of the potentiometer can be improved. Can be increased.

Further, the disk and the contact of the fixed-side member and the disk and the contact of the movable-side member are arranged in the axial direction of the handlebar,
In addition, since the lead wire connected to the contact can be wired linearly along the handlebar, the handle portion can be made compact while adopting a structure in which the potentiometer is provided on the handle portion.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an output adjusting device for an electric vehicle according to the present invention, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. FIG. 3 is a block diagram of a controller that performs the operation. FIG. 4 is a sectional view showing another embodiment using a potentiometer integrated with a tube guide. 1 ... handlebar, 2 ... potentiometer, 3,31 ...
... Fixed member, 4,32 ... Movable member, 17 ... Tube guide, 19 ... Handle grip.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-46106 (JP, A) JP-A-51-95925 (JP, U) JP-A-3-50905 (JP, U) (58) Investigation Field (Int.Cl. ⁷ , DB name) B60L 15/00-15/38

Claims (1)

(57) [Claims] 1. A tubular tube guide having a handle grip fitted thereto is rotatably mounted on an outer end portion of a steering handlebar, and a switch holder is provided inside the vehicle body from the handle grip. , An output adjustment device for an electric vehicle provided with a potentiometer for increasing / decreasing drive power supplied from a battery to a traveling motor, wherein the potentiometer extends in a direction orthogonal to an axis of the handlebar. A fixed-side member having a disk, a movable-side member having a disk facing the disk of the fixed-side member, and a movable-side member provided at an extension-side end of the tube guide extending into the switch holder; The fixed side member is fixed to a handlebar, and the fixed side member rotatably supports the movable side member. The contacts provided on the end face facing the movable member in the disc, provided with sliding contact contacts to the contact on the end face facing the fixed-side member in the disc of the movable member,
An output adjustment device for an electric vehicle, wherein a lead wire connected to the contact is wired along a handlebar.