JPH052347Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an emergency operation system for a vehicle when the engine of the vehicle stops at a dangerous location such as a railroad crossing.

(Prior art) When a vehicle's engine stops at a dangerous location such as a railroad crossing and cannot be restarted, vehicles equipped with a manual transmission shift the gear to first or reverse position and engage the clutch. The starter motor can be connected to power the starter motor, and the vehicle can be moved by its driving force.

Incidentally, in recent years, actuators controlled by electronic control devices are used to automatically control clutches and transmissions according to the driving state of the vehicle.
An automatic transmission is used.

As an emergency operation device for starting a vehicle equipped with this type of automatic transmission in an emergency, a starter interlock circuit is constructed by connecting the excitation coil of a starter relay connected to a key switch to a switching element provided in an electronic control device. There is a proposal for an emergency operation system for a vehicle in which a hold circuit, which is activated by turning on a reset switch, is provided in parallel with the interlock circuit, and a starter relay can be activated when the hold circuit is activated. This is disclosed in Japanese Patent Application Laid-Open No. 60-94826.

(Problems to be solved by the invention) In the above-mentioned proposed emergency driving device, during emergency driving, the driver not only operates the set switch for emergency driving, but also operates the key switch and steering wheel. This creates a problem that requires a lot of effort in its operability. Furthermore, in order to incorporate the set switch into a key switch in order to simplify the above operation, a new key switch must be developed, and furthermore, a circuit for the set switch must be added to the conventional electronic control device.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide an emergency driving device for a vehicle that simplifies operation during emergency driving and reduces costs.

(Means for Solving the Problems) According to the present invention, in an emergency driving system for a vehicle equipped with an automatic transmission that controls a clutch and a transmission using an actuator according to the running state of the vehicle by an electronic control device. , a clutch device that adjusts the connection state according to the vehicle's running condition and maintains the clutch in the engaged state even when power to the clutch actuator is cut off, and a starter interlock circuit that disables the starter interlock circuit when the engine is stopped. An emergency switch that has a switching contact circuit that switches to the operating state, a switching contact circuit that supplies power to the starter relay to drive the starter, and a switching contact circuit that releases power to the clutch actuator, and constitutes a single switch. An emergency driving device for a vehicle is provided, characterized in that it is equipped with a driving changeover switch.

(Function) Operation of the emergency operation changeover switch cuts off the power supply to the clutch actuator, so the clutch moves to the "contact" position, the starter interlock is released, and the starter can only be started when the engine is stopped. is started, and the power running enables emergency operation.

(Example) Next, an example of the present invention will be described in detail using the drawings.

The drawing is a circuit diagram showing the configuration of an embodiment of the emergency driving device for a vehicle according to the present invention.

In the figure, an electronic control device 1 is a microcomputer configured such that a clutch actuator drive circuit and a starter interlock circuit are controlled by a control circuit when a signal from a selector lever 10 is input. The clutch actuator 2 is switched between the "on" position and the "disconnected" position by the clutch actuator drive circuit, and when the power supply to the clutch actuator 2 is cut off, the clutch is switched to the "on" position and the "disconnected" position. The state is "connected".

As shown in the drawing, the vehicle power supply (batteries) 9
is connected to the switching piece of the first circuit of the emergency operation switching switch 3 via the key switch 4. The emergency operation changeover switch 3 is a so-called two-circuit, two-contact type interlocking switch, and the power supply connected to the first circuit switch is connected to the clutch actuator 2 through a normally closed contact a. ing. The normally open contact b of the first circuit is connected to one side (+ side) of the starter relay 5 and the starter starting contact of the key switch 4.
Connected to ST. The other side (- side) of the starter relay 5 is connected to the second circuit of the emergency operation changeover switch 3, and nothing is connected to the normally closed contact c of the second circuit, but the normally open contact d is connected to a switching piece of a charge relay 8 via a diode 11. The switching piece of the charge relay 8 is connected to the contact f side connected to the power source 9 when the generator 7 is driven by the engine and generating electromotive force, and is connected to the ground contact e when the generator 7 is not driven. connected to the side. Note that number 6 is a starter.

Next, the operation of the vehicle emergency driving system according to the present invention will be explained.

For example, assume a case where a vehicle approaches a railroad crossing at a certain speed, causes the engine to stop, and it is impossible to start the engine in an emergency. In this case, key switch 4 is in the ignition “ON” position.
position, and the emergency operation changeover switch 3 has not been operated yet, so the first circuit and the second circuit are connected to normally closed contacts a and c, respectively, and at the same time, the generator 7 is not driven. Therefore, the charge relay 8 is not activated and its switching piece is connected to the contact e.

In this state, the emergency operation changeover switch 3
When the first and second circuits are switched to the normally open contacts b and d by operating the switch, the power supply to the clutch actuator 2 is cut off, so that the clutch is connected. In addition, the - side of the starter relay 5 is connected to the normally open contact d of the second circuit and the diode 1.
1. Grounded via contact e of charge relay 8. Therefore, the starter relay 5 is energized, so the contacts of the relay 5 are closed, the starter 6 is driven, and the driving force of the starter 6 allows the vehicle to be moved. In addition, emergency operation changeover switch 3
When operating, the gear must be shifted to first gear (or second gear) or reverse position.
This can be shifted by the electronic control device 1 by operating the select lever 10.

In the above embodiment, the power supply to the clutch actuator 2 is cut off by operating the emergency operation changeover switch 3, but the structure is such that the power supply to the electronic control device 1 is cut off. Good too. That is, when the power to the electronic control device 1 is cut off, the clutch actuator 2 is also de-energized, and the clutch is automatically connected.

(Effects of the invention) As explained in detail above, according to the invention, when the vehicle is operated in an emergency, the starter interlock is released and the clutch is released by simply operating the emergency operation selector switch provided separately. In addition, since the power supply to the clutch actuator is switched to the starter, the emergency evacuation operation is simplified and labor is saved. Also, according to the present invention,
Since there is no need to modify the key switch or electronic control device, conventional products can be used, which has the advantage of preventing cost increases.

[Brief explanation of drawings]

The attached drawing is a circuit diagram showing the configuration of an embodiment of the vehicle emergency operation device of the present invention. 1 ... electronic control device, 2 ... clutch actuator, 3 ... emergency operation changeover switch, 5 ...
Starter relay, 6...starter, 8...charge relay, 9...power supply.

Claims (1)

[Scope of Claim for Utility Model Registration] An emergency driving system for a vehicle equipped with an automatic transmission that uses an actuator to control a clutch and a transmission according to the driving condition of the vehicle by an electronic control device. A clutch device that adjusts the connection state and maintains the clutch in a connected state even when power to the clutch actuator is cut off, and a switching contact circuit that switches the starter interlock circuit to an inactive state when the engine stops operating. and an emergency operation changeover switch that has a changeover contact circuit that supplies power to the starter relay to drive the starter, and a changeover contact circuit that releases power supply to the clutch actuator, and constitutes a single switch. An emergency driving device for a vehicle characterized by: