KR0113060Y1 - Door actuator control circuit for vehicles - Google Patents

Abstract

[purpose]

Provides a control circuit for the vehicle door actuator that reduces the number of parts and improves the overcurrent protection of the intended motor.

[Configuration]

A plurality of switching elements for supplying power to the battery, a rotary contact for converting the terminal side polarity of these switching elements, and a plurality of motors assigned to each window and connected in parallel to the rotary contact, It is configured to protect the above-mentioned current from being applied to each of the motors by interposing a positive electrode at one of the + and-common output terminals of the rotary contact.

Description

Vehicle Door Actuator Control Circuit

Figure is a circuit diagram showing an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

2: main control board 4a-4d: motor

6: rotary contact 8: position

10: switch

The present invention relates to a vehicle door actuator control circuit.

The door actuator is a device that automatically locks and unlocks the latch provided in the door of the vehicle at one time, and is a system that improves the driver's organizational convenience.

The door actuator actually has a structure that interlocks the door lever installed on one side of the door window frame up and down, and includes a motor capable of forward and reverse rotation.

Thus, the door actuator control circuit is prepared to control the rotational drive of the above-mentioned stationary motor.

One control circuit uniformly controls a plurality of motors mounted in each door.

The control circuit applies power to the motor through the operation of a switching element in which a plurality of batteries are arranged in a superimposed manner, and on the other hand, the rotary contact switches the polarity of the power according to the movement of the door lever. To be.

And the power line of each of the motors is interposed with a power supply to act as a power cut off when the overheating of the motor.

In other words, it is a thermosensitive resistor with resistance temperature characteristic of the positive electrode + and it detects when an overcurrent occurs in the motor and cuts off the circuit.

Therefore, when the door lever is linked to the end point and the motor is overloaded, the above-mentioned positioner operates to cut off the circuit.

In the door actuator control circuit having such a configuration, since the above-described positions are assigned to each motor, many of them are required.

This results in an increase in the number of parts and an increase in production costs, as well as a cumbersome manufacturing of the circuit board.

It is an object of the present invention to provide a control circuit for a door actuator for a vehicle which reduces the number of components and improves the overcurrent protection of the intended motor.

In accordance with the above object, the present invention provides a plurality of switching elements for supplying power to a battery, a rotary contact for converting the terminal side polarities of the switching elements, and a plurality of switches connected to the rotary contacts in parallel for each window. It is characterized in that it is configured to protect the motor from the overcurrent is applied to each of the motors by interposing a positive electrode at any one of the + and-common output terminal of the rotary contact.

According to the present invention of such a configuration, it is possible to obtain an operation effect of protecting each motor from flowing of overcurrent with a single transistor, thereby reducing the number of parts and reducing the production cost.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The illustrated door actuator control circuit is composed of one main control board 2 and four motors 4a-4d assigned to each door.

The main control board 2 has a rotary contact 6 which is switched in conjunction with the movement of the door lever, not shown, and the rotary contact 8 is divided into two + and-common contacts 6a and 6b. And a forward contact 6c and a reverse contact 6d.

On the other hand, a PNP type power transistor Q1 and two switching elements Q2 and Q3 are connected to the + terminal, and in particular, the rear end switching element Q3 is connected to trigger the base of the power transistor Q1. .

A peak voltage absorbing capacitor C1 is interposed between the collector end and the emitter end of the power switching element Q1, and a time division capacitor C2 and C3 and a resistor are provided at the base end of the front-side switching element Q2. (R1) (R2) (R3) is interposed.

Similarly, the capacitor C4 and the split resistors R4 and R5 are connected to the base terminal of the power transistor Q1, and the split resistors R6 and R7 are connected to the base terminal of the rear switching element Q3. The bias voltage can be obtained.

In addition, the emitter of the power transistor Q1 is connected and connected to the + common contact 6a of the rotary contact 6, and the base end of the front-side switching element Q2 and the emitter of the rear-end switching element Q3 are-. A plurality of motors 4a-4d are connected in parallel between the forward contact 6c and the reverse contact 6d while being connected to the common contact 6b.

In either line of the forward contact 6c or the reverse contact 6d, the transistor 8 and the switch 10 are interposed.

In the drawings, reference numerals D1-D4 denote non-return diodes, and ZD denotes a zener diode for constant voltage, respectively.

In the circuit configuration shown, the base end of the front-side switching element Q2 is turned on by being low level by being grounded via the common contact 6a of the rotary contact 6, and as a result, the rear-side switching element Q3. The base terminal of is also biased and turned on, and as a result, the base terminal of the power transistor Q1 is turned low and turned on, thereby being applied to the power supply + common contact 6a through the + terminal.

Therefore, each motor 4a-4d is rotated in the forward direction while the + common contact 6a to which power is applied is connected to the forward contact 6c, and the -common contact 6b is connected to the reverse contact 6d. Interlock the door lever to the open side.

When the door lever (not shown) is interlocked, the + common contact 6a is connected to the reverse contact 6d and the -common contact 6b is connected to the forward contact 6c so that each motor can be operated in the next operation of the switch 10. (4a-4d) is rotated in the reverse direction to engage the door lever to the closed side.

If an overcurrent flows to any one of the four-manipulators 4a-4d during such an operation, the resistance of the transistor 8 is rapidly increased to reduce the current flowing to the motor 4a-4d.

Therefore, the transistor 8 results in preventing the motors 4a-4d from being damaged by overcurrent.

As described above, in the present invention, a large number of expensive elements are disposed by substituting a positively assigned position for each motor with a + common contact interlocking the door lever and a single source interposed on the output terminal side of the common contact. This has the advantage of reducing waste and reducing the number of parts and production costs.

Claims (1)

A plurality of switching elements for supplying battery power, a rotary contact for converting the terminal side polarity of the switching elements, and a plurality of motors connected to each of the doors of the vehicle and connected in parallel to the rotary contacts. A vehicle door actuator control circuit configured to protect an overcurrent from being applied to each of the motors by interposing one of the + and-common output terminals of the rotary contact.