JP2838883B2 - Accelerator for small electric vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for use by persons who have difficulty walking, such as the elderly and the physically handicapped, and is a small electric vehicle in which an accelerator operating tool is biased to a low speed side by a spring. Related to an accelerator operation section.

[0002]

2. Description of the Related Art Hitherto, in order to hold an accelerator operating tool at a constant speed position against a spring, a driver always has to manually hold the accelerator operating tool.

[0003]

However, to artificially hold the accelerator operating tool at a constant speed position against the spring for a long time, even if it is nothing for a healthy person, it is difficult for the elderly or physically disabled. In some cases, the hands are tiring and the operation is difficult, and there is room for improvement in terms of driving performance. An object of the present invention is to make it possible to hold an accelerator operating tool at a constant speed position without hand fatigue, and to devise such means so as not to adversely affect the brake operation.

[0004]

According to a feature of the present invention, a stopper for holding an accelerator operating tool at a predetermined constant speed position against a spring is provided with respect to the accelerator operating tool or a member interlocked therewith. The engagement and disengagement is provided, and the stopper is linked to the brake operating tool in such a state that the holding of the accelerator operating tool at a constant speed position by the stopper is released with the brake operation.

[0005]

In other words, since the accelerator operating tool can be maintained at a predetermined constant speed state by holding the position of the accelerator operating tool by engaging the stopper, the accelerator operating tool can be maintained even when traveling at a constant speed for a long time. There is no inconvenience of tired hands for maintaining the position of the vehicle, and it is possible to drive easily. That is, for example, when traveling on a road with few pedestrians, such as a mountainous area or a suburb, it is not necessary to frequently perform a speed change operation such as reducing a speed so as not to hit a person or performing a speed increase operation for traveling. Therefore, the vehicle can be run with less fatigue without manually maintaining a preset constant speed at which the vehicle can run at a relatively high speed. In addition, when traveling on a street in a busy city area, since there are many pedestrians and the speed must be changed frequently, the traveling speed is relatively low, and if released, the vehicle returns to a low speed. The operation of the accelerator operation tool can be performed in the state, thereby facilitating operation. In addition, when the brake is applied while maintaining the constant speed by the action of the stopper, the holding of the accelerator operating device at the constant speed position by the stopper is automatically released by the brake operation, so that the speed maintaining means maintains the constant speed. Can be quickly released to stop traveling.

[0006]

As a result, the vehicle can be easily driven when traveling at a predetermined constant speed, and the traveling at the constant speed can be performed at a low speed that requires frequent speed adjustment in places where there are many people. The control is not performed in the traveling area, and is devised so that the control can be performed only at a relatively high speed, which is a state in which the speed adjustment is less frequent, so that the steering with good operability can be performed. In addition, it is possible to provide a small-sized electric vehicle that can be stopped quickly even in the constant-speed running state and that has much better drivability.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a rechargeable battery 4 for driving a rear wheel 3 is mounted on a vehicle body having a steerable front wheel 2 and a pair of left and right rear wheels 3 directly connected to a steering handle 1.
And an electric motor 5; a clutch 6 for interlocking the electric motor 5 and the rear wheel 3; a transmission 6 with a reduction gear and a differential; a driving seat 7 which can be rotated left and right and fixed; Step 8 and the like are provided to constitute a three-wheeled small electric vehicle suitable for a person who has difficulty walking. As shown in FIG. 2, a rotary grip type accelerator operating tool 9 is provided on the steering handle 1, and a speed adjusting lever 10 for operating a speed setting potentiometer P of the electric motor 5 is linked with the accelerator operating tool 9 by a release wire 11. At the same time, the accelerator operating tool 9 is urged to the low speed side by the spring 12, and the accelerator operating tool 9 is set at a predetermined constant speed position (for example, the maximum speed) against the spring 12.
The stopper 13 is provided so as to be capable of engaging and disengaging from the engaging portion 9a of the accelerator operating tool 9 and being urged in the engaging direction by a spring 14. Even if the steering is continued at a constant speed for a long time by holding the position of the tool 9, the hand is not tired due to the holding of the position of the accelerator operation tool 9 and the vehicle can be easily driven. A grip lever type brake operating tool 15 is provided on the steering handle 1, and a brake lever 16 of the brake B for the rear wheel 3 is interlocked with the brake operating tool 15 via a release wire 17, and is urged to a brake release side by a spring 18. Stopper 1
3 and the brake operating tool 15 are linked by the release wire 19 in a state where the holding of the accelerator operating tool 9 at the constant speed position by the stopper 13 is released with the brake operation,
When the brake is applied while maintaining a constant speed by the action of the stopper 13, the stopper 1
3 is automatically released from holding the accelerator operating tool 9 at a constant speed position, so that the accelerator operating tool 9 can be quickly and rapidly stopped without being adversely affected by the speed maintaining means. As shown in FIG. 3, the fender 20 of the rear wheel 3 protruding left and right.
Contact sensor 21 for other objects near the front
The sensor 21 is linked to a power switch of the electric motor 5 and an electromagnetic brake for the rear wheels, and is configured to stop automatically when the sensor 21 contacts another object at the time of steering or the like. I try to prevent it.

[Alternative Embodiment] The accelerator operating tool 9 may be a grip lever type, and the operating position of the spring 12 for urging the accelerator operating tool 9 to the low speed side can be appropriately changed. The specific configuration of the stopper 13 that holds the accelerator operation tool 9 at the constant speed position can be changed as appropriate, and the stopper 13 may be configured to be disengaged from a member that is interlocked with the accelerator operation tool 9. Further, in order to engage the stopper 13 with the accelerator operating tool 9 or a member interlocked with the accelerator operating tool 9, the stopper 13 may be operated by a dedicated operating tool. A plurality of positions for holding the accelerator operation tool 9 may be made selectable. In order to link the stopper 13 to the brake operating tool 15 and to release the accelerator operating tool 9 from holding the constant speed position by the stopper 13 with the brake operation, the linkage configuration can be appropriately selected, for example, an electric type or a hydraulic type. May be used. The specific configuration and application of the small electric vehicle are not questionable.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of an electric vehicle.

FIG. 2 is an explanatory view of a main part.

FIG. 3 is an overall plan view of the electric vehicle.

[Explanation of symbols]

 9 Accelerator operation tool 12 Spring 13 Stopper 15 Brake operation tool

Claims (1)

(57) [Claims] In a small electric vehicle in which an accelerator operating tool (9) is biased to a low speed side by a spring (12), the accelerator operating tool (9) is set in advance against the spring (12).
Stopper for holding a constant speed position, as (13)
Is provided so as to be capable of engaging and disengaging with respect to the accelerator operation tool (9) or a member interlocked therewith, and the stopper (1) is provided.
3) the accelerator operation of a small electric vehicle in which the brake operating tool (15) is linked to a state in which the holding of the accelerator operating tool (9) at a constant speed by the stopper (13) is released with the brake operation. Department.