JPH09132006A - Small electric motor car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate instantanious stop in order to avoid collision with obstacles. SOLUTION: An accelerator lever 13 is provided, which can be gripped together with a hand grip 12A, a control means is provided, which can reversely accelerate a running motor in response to the operation of the accelerator lever 1 to the side of acceleration, and an emergency operation converting means is also provided, which operates the accelerator lever 13 to the side of deceleration corresponding with the case when the operation force of the accelerator lever 13 to the side of acceleration exceeds a set value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small electric vehicle which is useful, for example, when an aged person or a physically handicapped person has difficulty in walking, and more specifically, a grip handle and a gripping operation. And a control means for reversibly actuating the traveling motor to the speed increasing side in response to the operation of the accelerator lever toward the speed increasing side.

[0002]

2. Description of the Related Art In a small electric vehicle of this type, generally, a spring or the like urges an accelerator lever to a stop side, and an accelerator lever is operated against the urging force to increase the speed. And decelerating and stopping by releasing the operation on the accelerator lever.

[0003]

By the way, there are cases where it is desired to stop urgently while traveling, for example, by avoiding a collision with an obstacle.

In such a case, in the above-mentioned small electric vehicle, it is dealt with by releasing the operation on the accelerator lever. Generally, in the case of a quip such as an emergency stop, the hand is released to release the accelerator lever. Is difficult, and on the contrary, it is often the case that you hold your hand firmly. In such a case, the result is that the speed is increased without stopping.

An object of the present invention is to make it easy to stop the sword.

[0006]

The structure, operation and effect of the first invention according to the first aspect of the present invention are as follows.

[Structure] There is provided a motion converting means for emergency braking for actuating the accelerator lever to the deceleration side in response to the acceleration operation force applied to the accelerator lever being equal to or more than a set value.

[Operation] Paying attention to the tendency of grasping the hand strongly when the sword is stopped, by providing a motion converting means for emergency stop, when the accelerator lever is strongly operated, the accelerator lever is moved to the deceleration side. Since it is configured to operate, when the accelerator lever is strongly operated by grasping the hand strongly, the vehicle will decelerate and stop.

[Effect] As a result, it becomes easier to perform deceleration stop of the sword.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a small electric vehicle includes a front wheel 2 having a one-wheel structure which is steered by a steering wheel 1, and a pair of left and right rear wheels 4 driven by an electric motor 3. 4, a vehicle body frame 5 movably supported by the vehicle is equipped with a passenger seat 6, a battery 7, and a control device 8.

As shown in FIGS. 2 and 3, the steering handlebar 1 includes a handlebar column 10 connected to a fork member 9 supporting the front wheel 2 so as to be swingable left and right around a vertical axis. Attached to this handle strut 10
A handle rod support box 11 is equipped at the upper end of the handle rod support box 11, and a pair of right and left U-shaped handle rods 12 in a plan view are attached to the handle rod support box 11.

The handle rod support box 11 is swingably supported around a longitudinal axis P so that the accelerator lever 13 can be gripped with the handle grips 12A of the pair of left and right handle rods 12, respectively. There is.

When the rocking operation force on the accelerator lever 13 is released, the accelerator lever 13 is elastically biased by a spring 16 to a horizontal stop position, and the downward swing from the horizontal stop position occurs. The operation is toward the speed-up side.

The handle rod support box 11 is provided with a potentiometer 14 in a state of being linked with the accelerator lever 13, and the potentiometer 14 is provided.
Detects the swing operation amount of the accelerator lever 13,
A signal corresponding to the swing operation amount is output to the control means 8.

The control means 8 outputs an output signal from the potentiometer 14 so that the vehicle speed becomes a speed according to the swing operation amount of the accelerator lever 13, that is, the vehicle speed increases as the swing operation amount increases. The drive signal for driving the electric motor 3 is output based on the output signal, and the drive signal is output to the electric motor 3 when the signal from the potentiometer 14 is input when the accelerator lever 13 is in the horizontal stop position. Is provided to bring the electric motor 3 into a dynamic braking state.

Further, the small electric vehicle is for emergency braking in which the accelerator lever 13 is swung to the deceleration side, that is, the horizontal stop position in response to the acceleration operation force applied to the accelerator lever 13 being equal to or greater than the set value. The motion converting means A is provided.

As shown in FIGS. 4 and 5, the motion converting means A arranges the longitudinal axis P, which is the swing axis of the accelerator lever 13, at a position slightly lower than the hand grip 12A, A lever 13 is attached to the handle rod support box 11 so as to be swingable around a longitudinal axis P, and a flexible portion 13 is attached to the base portion 13A.
It is formed by the operation portion 13C attached via B. The flexible portion 13B bends when an operation force greater than a set value is applied to the operation portion 13C, and the operation portion 1B
3C does not bend even when an operating force to the speed increasing side is applied, and is made of rubber or synthetic resin.

That is, as shown in FIGS. 4 and 5,
Now, while the accelerator lever 13 is being operated and maintained at the speed increasing side, the accelerator lever 13, that is, the operating portion 13C
When the grip is operated with the handle grip 12A with an operating force equal to or more than the setting, the operation part 13C is pulled up obliquely upward on the handle grip 12A side while the flexible part 13B bends obliquely upward on the handle grip 12A side. As a result, the base end portion 13A swings upward, that is, decelerates, and is positioned at the horizontal stop position.

Therefore, according to the above construction, the force holding the handle grip 12A and the accelerator lever 13 together is often strong at the time of slamming, so when the slam is stopped, the accelerator lever 13 is operated more than the set value. As a result, the accelerator lever 13 swings to the deceleration stop side, and the traveling is stopped.

[Other Embodiment] In the above embodiment, the motion conversion means A is modified as follows.

That is, to configure the motion converting means A,
As shown in (a) and (b) of FIGS. 6, 7, 8 and 9, the accelerator lever 13 is attached to the handle rod support box 11 so as to be swingable around the vertical axis Y1, and the accelerator lever 13 is attached. From the stop position of the handle grip 12
Swing to the A side is the operation to the acceleration side, and the accelerator lever 1
3 is a base end portion 13A that is attached to the handle rod support box 11 so as to be swingable about a vertical axis Y1, and an operation unit that is attached to the base end portion 13A so as to be swingable around an intermediate vertical axis Y2. 13C and its operating portion 13C are composed of a spring 13D that urges the swing operation so as to have a predetermined posture with respect to the base end portion 13A.
When the accelerator lever 13 is swung to the maximum speed position on A, the operating portion 13C is swung with the operating portion 13C and the operating portion 13C is swung with the abutting portion as the fulcrum R. Handle Y2 with core Y2
A regulation portion 17 is provided which is displaced in a direction away from the base end portion 13A to swing the base end portion 13A to the stop position. The spring 13
The urging force of D is the operation portion 13C in the normal gripping operation.
When the joint gripping operation force larger than the normal joint gripping operation force acts on the base end portion 13A with a force that does not rock the base end portion 13A, a magnitude that allows the operation portion 13C to swing relative to the base end portion 13A. Power of. Of course, when the base end portion 13A swings to the stop position, the traveling is stopped as in the case of the above-described embodiment.

Also in this case, as shown in FIGS. 9 (a) and 9 (b), the accelerator lever 13 and the handle grip 1 are fluttered.
When 2A and 2A are strongly squeezed together, the operation portion 13C moves to the regulation portion 1
7 and swings around the contact portion as a fulcrum R. As a result, the intermediate vertical axis Y2 is displaced in the direction away from the handle grip 12A, and the base end portion 13A swings to the stop position. , The traveling is stopped.

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 showing an embodiment.

FIG. 2 is a plan view of a main part showing an embodiment.

FIG. 3 is a rear view of the main part showing the embodiment.

FIG. 4 is an enlarged cutaway side view of a main part showing an embodiment.

FIG. 5 is an enlarged perspective view of an essential part showing an embodiment.

FIG. 6 is a plan view of a main part showing another embodiment.

FIG. 7 is a rear view of a main part showing another embodiment.

FIG. 8 is a cutaway side view of essential parts showing another embodiment.

FIG. 9 is an enlarged plan view of a main part showing an operation according to another embodiment.

[Explanation of symbols]

 12A Handle grip 13 Accelerator lever 3 Travel motor 8 Control means A Motion conversion means

Claims (1)

[Claims] 1. An accelerator lever (13) which is operated together with a handle grip (12A) is provided, and a traveling motor (3) is reversibly increased in response to an operation of the accelerator lever (13) toward a speed increasing side. A small electric vehicle equipped with a control means (8) for actuating to the speed side, wherein the accelerator lever (13) is decelerated when the speed increasing operation force on the accelerator lever (13) exceeds a preset value. A small electric vehicle provided with a motion converting means (A) for emergency braking to be operated on the side.