JPH05309179A - Transmitter for radio controlled car - Google Patents

Abstract

PURPOSE:To eliminate such a problem that a radio controlled car is greatly deviated from its course when it enters into a curve at a high speed since a manipulation to a throttle stick delays with respect to a manipulation to a steering stick. CONSTITUTION:A switch 3 and a speed control circuit 4 are connected between a throttle side variable resistor 2 and an encoder 5. When a steering stick 8 is moved by a stoke greater than a predetermined value, the switch 3 connects the resistor 2 to the speed control circuit 4 so as to lower the speed to a predetermined value.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to improvements in transmitters for radio control cars.

[0002]

2. Description of the Related Art A radio control car that controls the speed and direction (steering) of a model car by receiving signals from a stick-type or wheel-type transmitter held by the user with a receiver mounted on the model car ( RC cars are also popular. When steering the RC car, the movement of the first servo motor is transmitted from the servo horn to the front wheels to determine the steering angle. For speed control, the rotation time, direction, and speed of the second servomotor are determined by the signal from the receiver. In an electric RC car that incorporates a battery and an electric motor,
The speed control device is moved by changing the contact position to the variable resistor for speed control, and the position of the throttle is changed in the RC car incorporating the model engine.

Such RC cars also provide the enjoyment of playing speed competition. When competing for speed, it is a big point to reduce the speed to a speed at which you can pass the curve without leaving the course. For this reason,
The RC car user controls the speed with one operation stick on the transmitter side and controls the steering angle with the other operation stick, while performing two operations in the curve, deceleration and steering operation It is necessary to do it appropriately according to the radius of.

However, in actual operation, the forward / reverse speed control stick operation is delayed to the steering operation and enters the curve with insufficient deceleration, so the RC car is swung on the curve and off the course. There are many.

[0005]

SUMMARY OF THE INVENTION The present invention provides a transmitter that enables an RC car to decelerate in accordance with a curve, thereby solving the problems of the conventional RC car. To do.

[0006]

[Means for Solving the Problems] A transmitter for an RC car is
A steering side variable resistor as a channel 1 and a throttle side variable resistor as a channel 2;
It has a configuration in which electrical changes caused by both variable resistors are transmitted as radio signals from an antenna via an encoder and a high frequency unit.

The present invention uses a means for arranging a speed control circuit with a switch interposed between the throttle side variable resistor as the channel 2 and the encoder, and switching this switch by the steering channel 1. The speed control circuit may be a circuit incorporating a variable resistor, an electric circuit incorporating a transistor, or an electric circuit according to this. The circuit may be able to select the deceleration rate stepwise or steplessly.

[0008]

The steering channel 1 has left and right rudder regions on the left and right of the center neutral position. When the stick of the steering channel 1 is advanced to, for example, 80% of each region, The switch is turned on, and the electrical change by the throttle side variable resistor is sent to the encoder via the speed control circuit. Since the circuit adds an electrical change that means deceleration to the electrical change by the variable resistor on the throttle side and sends it to the encoder, even if the stick in the speed channel is at any position other than neutral, the RC car is in that state. The speed can be reduced at any rate. That is, even if the stick on the speed channel is at the highest speed,
The RC car will pass the curve in the state of% deceleration.

When the steering stick for channel 1 is returned to the neutral position, the switch is opened and the signal from the throttle side variable resistor is directly input to the encoder.
Therefore, the speed of the RC car follows the movement of the speed stick.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the basic structure of a transmitter of a radio control car (also called an RC car) according to an example of the present invention. The steering-side variable resistor 1 that interlocks with the stick 8 of the channel 1 is connected via the encoder 5 and the high-frequency unit 6.
It is connected to the transmitting antenna 7. For example, when the steering stick 8 is moved in the right rudder direction from the neutral position, an electrical change corresponding to this movement amount is output from the steering side variable resistor 1, and is transmitted via the encoder 5 and the high frequency unit 6. From the transmitting antenna 7, R as a radio signal
It is sent to the receiver of C car. The receiver determines the steering angle according to the signal.

The throttle-side variable resistor 2 interlocking with the stick 9 of the channel 2 is connected to the encoder 5, the high frequency section 6 and the antenna 7 via the switch 3. When the throttle stick 9 is moved from the neutral position to the forward and high speed range, an electric signal corresponding to this moving amount is output from the throttle side variable resistor 2 and is transmitted via the encoder 5 and the high frequency unit 6 to the transmitting antenna. From 7, it is sent as a radio signal to the receiver of the RC car. The receiver determines the speed according to the signal.

When the steering stick 8 is moved in the right or left rudder direction beyond an arbitrarily set point, the switch 3 is switched to connect the throttle side variable resistor 2 to the speed control circuit 4. The speed control circuit 4 is an electric circuit incorporating a variable resistor or a transistor or something similar thereto, and an encoder that changes the electrical change of the throttle variable resistor 2 from the speed in that state at an arbitrary rate Send to. For example, the speed control circuit 4 sends to the encoder 5 a signal corresponding to the selected deceleration such as 40% reduction, 30% reduction, 20% reduction of the maximum speed.

Therefore, in this example, if the steering angle exceeds a certain value, the RC car will run at a constant speed of, for example, 40% reduction even if the throttle stick 9 is moved to the highest speed position. Therefore, the curve can be cleared successfully. When the steering angle is returned to the original position, the switch 3 returns to the position shown by the solid line in FIG. 1, and the RC car can run at a speed according to the movement of the throttle stick 9.

[0014]

According to the present invention, when the stick is moved so as to increase the steering angle in order to bend a curve, the speed can be automatically reduced regardless of the position of the stick for throttle. For this reason, the RC car is prevented from swinging sharply on a curve.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an example of the present invention.

[Explanation of symbols]

 1 Steering side variable resistor 2 Throttle side variable resistor 3 Switch 4 Speed control circuit 5 Encoder 6 High frequency part 7 Transmitting antenna 8, 9 Stick

Claims (2)

[Claims] 1. A steering-side variable resistor that interlocks with a steering stick or wheel, an antenna that transmits an electric signal from the resistor as a radio signal through an encoder and a high-frequency section, and a throttle-side variable resistor that interlocks with a throttle stick. And a speed control circuit interposed between the throttle-side variable resistor and the encoder, the switch is operated by a steering stick or a wheel, and an electrical change by the throttle-side variable resistor is performed. A radio control transmitter for selectively transmitting to the encoder directly or via the speed control circuit. 2. The transmitter for a radio control car according to claim 1, wherein the speed control circuit is capable of selecting a plurality of deceleration stages and stepless deceleration.