JPS5933055Y2 - Automobile constant speed running device operation release device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an operation canceling device for canceling constant speed running of a constant speed running device for an automobile.

In general, a constant speed driving system for automobiles is a device that allows the vehicle to travel at a constant speed without continuously pressing the accelerator.It usually uses an actuator such as a diaphragm or servo motor to adjust the throttle valve opening, accelerator pedal, or fuel injection amount to speed up the vehicle. is held constant.

The constant speed traveling of this constant speed traveling device is normally canceled using a stop switch and an accelerator switch (or clutch switch).

In such a case, if the contact of the stop switch is defective or the fuse is blown, the brake cannot be canceled even if the brake pedal is pressed, and there is a risk that the car will run out of control.

In order to solve the above-mentioned problems, some vehicles have been provided with an overspeed prevention circuit or a monitoring circuit for determining abnormalities in the control circuit of the constant speed traveling device, but these have had problems in that the circuits are complicated and costly.

Moreover, among the switches for canceling constant-speed running mentioned above, the one that directly leads to dangers such as runaway bundles is the stop switch failure, so increasing the reliability of this stop switch was the most important problem. .

This idea was made in view of the problems of the conventional ones as mentioned above, and a sub-stop switch is provided in conjunction with the stop switch that supplies power directly from the B power supply, that is, the battery. By connecting the stop switch to the same <Ig power source as the main switch of the constant speed running device, that is, from the ignition power source via the key switch, even if the stop switch does not operate due to a blown fuse or contact failure, it can be canceled by the sub-stop switch. It is an object of the present invention to provide an operation release device for a constant speed traveling device for an automobile, which is capable of improving safety.

An embodiment of this invention will be described in detail below with reference to the drawings.

The drawing shows the circuit configuration of an embodiment of this invention, and in the drawing, 1 is a battery, 2 is a main fuse, 3 is a stop switch directly connected to the battery 1 via the main fuse 2, and 4 and 5 are lamp checkers. The stop lamp is connected to the stop switch 3 through the stop switch 6, and blinks when the stop switch 3 is opened or closed.

Reference numeral 7 denotes an indicator lamp of the lamp checker 6, which lights up when the lamps 4 and 5 are out of order.

8 is a key switch connected to the main fuse 2,
Reference numeral 9 denotes a central control circuit for a constant speed vehicle for automobiles, which is connected to the key switch 8 via a fuse 10 and a main switch 11; 12 is an indicator lamp of the constant speed vehicle; when the main switch 11 is closed, Turn on the light.

13 is a vehicle speed or rotation sensor that applies a vehicle speed signal to this central control circuit 9; 14 is a set switch for setting this central control circuit 9; 15 is a motor, diaphragm, etc. driven by the output of this central control circuit 9; This actuator 15 controls the opening degree of the throttle valve 17 of the intake manifold 16.

A signal to be opened and closed by the stop switch 3 is input to one cancel input of the central control circuit 9.

A signal to be opened/closed by a clutch switch (or accelerator switch) 18 provided in parallel with the main switch 11 is input to another cancel input of the central control circuit 9.

Further, a sub-stop switch 19 is provided in parallel with the clutch switch 18, and this sub-stop switch 19 is adapted to operate in conjunction with the stop switch 3.

Next, the operation will be explained.

While the car is running, the key switch 8 is on.
B power supply (second power supply) is supplied from the battery 1 to the stop switch 3 via the main fuse 2, and
Ig zero power (first power) is supplied to the main switch 11 of the central control circuit 9 via the key switch 8 .

When the main switch 11 is turned on and the set switch 14 is turned on when the vehicle reaches a desired speed, the central control circuit 9 is set and the opening degree of the throttle valve 17 is controlled via the actuator 15. Drive the car at a constant speed.

When the brake pedal is pressed to decelerate while driving at a constant speed, the stop switch 3 closes, and a signal is input from the B power supply through the stop switch 3 to the cancel input of the central control circuit 9. Cancel constant speed driving.

On the other hand, the clutch switch (or accelerator switch) 18 is also closed when the clutch pedal is pressed to downshift to accelerate, or when the accelerator pedal is pressed.
A signal is input from the power supply via the switch 18 to the cancel input of the central control circuit 9, and constant speed running is canceled.

However, if a contact failure occurs in the stop switch 3 in the above case, the signal from the B power source will not be input to the central control circuit 9, so the central control circuit 9 will not cancel constant speed running, but the stop switch 3 is provided with a sub-stop switch 19 that interlocks with this,
Since this is closed, a signal from the Ig zero power source is input to the central control circuit 9 via the sub-stop switch 19, and constant speed running is canceled.

Conversely, if the sub-stop switch 19 does not operate due to a contact failure or the like, the stop switch 3 can cancel the constant speed running.

However, as in this embodiment, the sub-stop switch 19 is connected to the Ig zero power supply, which is the main power source of the constant speed traveling device, so if the fuse is blown, that is, if the fuse 10 is blown, the constant speed traveling device itself will be inactive. , it is possible to prevent runaway even if the stop switch 3 is actuated.

Furthermore, if the fuse of the B power supply is blown, that is, if the fuse 2 is blown, the engine itself will not operate, so the problem of canceling constant speed running will not occur.

As described above, according to this invention, in a constant speed traveling device for an automobile, in addition to a stop switch to which power is directly supplied from the battery power source, a sub-stop switch that is linked to this stop switch is provided, and this sub-stop switch By supplying power from the Ig zero power source, which is the main power source of the constant speed running device, even if the stop switch does not operate due to a blown fuse or contact failure, constant speed running can be canceled by the sub-stop switch. On the other hand, if the sub-stop switch does not operate, it can be canceled using the stop switch, which has the effect of ensuring that constant-speed running is canceled and avoiding the risk of runaway.

[Brief explanation of drawings]

The drawing is a circuit configuration diagram of an operation release device for a constant speed traveling device for an automobile according to an embodiment of the present invention. 1...Battery, 3...Stop switch, 9...Central control circuit for constant speed traveling device, 1
1 Main switch, 19...Sub stop switch.

Claims (1)

[Scope of utility model registration request] In a low-speed running device for an automobile, power is supplied to a main switch of the constant-speed running device from a first power supply circuit that is energized from a battery via a key switch, and from a second power supply circuit that is energized directly from the battery. The configuration is such that power is supplied to a stop switch that cancels the constant speed traveling device, and a sub-stop switch is provided that works in conjunction with the stop switch to cancel the constant speed traveling device, and the sub-stop switch is connected to the first power supply circuit from the first power supply circuit. 1. An operation release device for a constant speed vehicle for an automobile, characterized in that the device is configured to supply power.