JP2002002505A - Steering device of radio-operated vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the attachment/detachment performance and the operational performance of a steering device of a radio-operated vehicle. SOLUTION: In the steering device shown in Fig.1 which is developed by mounting a radio-operated actuator on a steering wheel without remodeling a vehicle body so that the directionality and the rotational angle are synchronous with a handle of a transmitter in the same steering operation onboard a vehicle, the actuator is fixed to the steering wheel by at least tree clamps across a rubber plate. The rotational torque is obtained by extending a bar from a reduction gear and tightening it to a seat or the like. The transmitter divides one rotation at equal intervals, and transmits each division by an UP- DOWN counter. A predetermined small-power machine on the market is used for a transmission module. The reception side inputs the received counter output and the output from an encoder fitted to the actuator through the UP-DOWN counter in a comparator and a motor drive circuit. The steering wheel is operated as instructed by a driver.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless remote control device, which is intended for a wide range of mechanical driving operations, for people with limited limbs, and for work in danger areas.
Utilize in the driving technology field to improve the working environment.

2. Description of the Related Art A conventional radio remote control device is detachable, has no actuator mounted on a steering wheel, and requires modification of a vehicle body.

[Problems to be Solved by the Invention] In a construction machine, a driver sometimes drives on the road to near the site for work such as soil removal at a dangerous site. From there, unmanned removal work must be performed, and after returning to a safe state, normal operation must be returned. The radio control should be easy to put on and take off.

There are two types of handles: a lever type and a round handle type. The lever type can be made by an air cylinder or a motor with a linear type speed reducer. The present invention is a method of turning a round handle.

[0005] In the method of turning the circular handle, the actuator is mounted on the handle wheel, and their weight is borne by the handle wheel.

[Means for Solving the Problems] In order to mount the actuator on the steering wheel, clamps are mounted on the actuator at three or more places, the mounting clamps are mounted on the handle wheel, and the support rod for the rotational force is attached to the seat or pillar. Bind with a rope.

[0007] The mounting clamp protects the vehicle handle wheel with rubber rubber, and fixes it with a bolt to a flat bar protruding from the actuator shaft together with an L-shaped bracket.

The support bar is attached to the actuator via a door hinge that swings up and down.

[Embodiment] An electric system will be described. An embodiment is shown in FIG. The vehicle handle repeatedly rotates left and right frequently, the rotation speed changes frequently, the rotation angle must be synchronized with the transmission handle, there is a rebound reaction force from the road surface, etc. Let's solve them.

The present invention has devised a new method of using a comparison circuit by combining existing circuits. When the steering wheel is rotated left and right, both the transmitter and the actuator output signals from the encoder. This signal is output from both up / down counters, input to a comparison circuit, and left and right rotation directions and angles, and a brake signal are sent to a motor drive circuit.

[Example] The weight of the prototype is 11 kg. In the method of turning the round handle, the prototype used a dump-pattern motor reducer. The motor is direct current and the original produces a torque of 28 Kg-m. Since the speed was low, the reduction ratio inside the speed reducer was changed, and a speed of about 0.8 rps was obtained with the handle wheel, and the operating force was 29 kg at the outer circumference of 380 mm diameter. There is enough torque.

On the transmitter side, a handle is mounted in the center, and the lower part is an encoder. In the prototype, one rotation is 2
Divided into four equal parts. It is counted by the up-down counter and transmitted. The transmission module uses a commercially available specific low-power device. The power supply of the transmitter uses four AA batteries, and the current consumption is 72 mA. The reach of radio waves is 200 m in a typical residential area.

On the receiver side, the received counter output and the output from the encoder attached to the actuator through the up / down counter are input to the comparison circuit of FIG. When the power is turned on, a signal to be set to half of the maximum count is output from both transmitters to both counters. The signals of right rotation, left rotation, and brake are output from the comparison circuit to the motor drive circuit of FIG.

In the present invention, the electric circuit is a combination of the above. Further, it is a feature of the present invention that the device is easily attached and detached and the steering wheel moves according to the driver's instructions without modifying the vehicle body.

[Effects of the Invention] The present invention uses a wireless remote control device, is intended for wide-ranging mechanical driving operation, is effective for people with limited limbs, for work in dangerous places, and for improving the working environment. There is.

[0016]

[Brief description of the drawings]

[Fig. 1] Actuator installation diagram

[Figure 2] Block diagram

[Fig. 3] Comparison circuit

[Fig. 4] Motor drive circuit

Claims (4)

[Claims] 1. An actuator is mounted on a steering wheel without modifying a steering wheel of a vehicle. 2. The rotation direction and angle of the steering wheel of the transmitter and the steering wheel of the vehicle are equal. 3. The actuator can be easily attached and detached. 4. An electric circuit for operating a steering wheel.