KR19990059711A - Wiper arm up and down actuation system linked to ignition switch - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a windshield wiper provided in a vehicle. In the related art, dust is accumulated on the contact portion between the windshield and the windshield wiper by wind when the vehicle is parked, and when the driver inadvertently operates the wiper, In order to solve the problem that the wiper blade and the wind shield are damaged by the actuator, an actuator 10 for moving the wiper arm 2 upward and downward in a predetermined portion of the upper side of the vehicle cowl panel 9 is provided. ), The wiper arm 2 is operated downward by driving the actuator 10 through the comparator 21, the transistor 1 22 and the relay 1 23 as an electric signal generated when the signal is turned on. When the switch 20 is turned off, the actuator 10 is driven through the inverter 31, the transistor 2 32, and the relay 2 33 to operate the wiper arm 2 upward. By wiping the vehicle, the wiper blade 1 coupled to the wiper arm 2 is separated from the wind shield 8 while the vehicle is parked to remove dust that tends to accumulate at the contact portion between the wiper blade 1 and the wind shield 8. When the vehicle's starter is activated, the wiper blade 1 and the wind shield 8 are automatically brought into close contact with each other to facilitate vehicle operation and to extend the life of the wiper blade 1 and the wind shield 8. It is effective.

Description

Wiper arm up and down actuation system linked to ignition switch

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a windshield wiper provided in a vehicle, and in particular, includes an actuator for moving the wiper arm up and down on a predetermined portion of an upper side of a vehicle cowl panel, and an ignition switch. ) Is an electrical signal generated when ON is turned on to drive the actuator through the comparator, transistor 1 and relay 1 to operate the wiper arm downward, and when the ignition switch is turned off, the inverter (Inveter), transistor 2 and The present invention relates to a wiper arm up and down operating system which drives an actuator through relay 2 and interlocks with an ignition switch that operates the wiper arm upward.

In general, a vehicle is provided with a windshield wiper, which acts to wipe the front glass to prevent the driver's watch from interfering with rain or snow, and wiper blades, wiper arms, and wipers. It consists of a motor link part.

As shown in FIG. 1, the wiper blade 1 supports the rubber as a fixing device for the windshield and fits the central portion of the fixing device to the end of the wiper arm 2. The other end of the wiper arm 2 is coupled to the wiper link (not shown) by bolts (not shown) or serrations (not shown) and the wiper arm spring 3 is attached to the wiper blade 1. Acts to contact the front glass with an appropriate force. The contact angle with the front glass is 30 ° to 50 °, and if the contact angle is too large, the glass (not shown) and the wiper blade 1 are abraded, and if it is small, the wiping state is poor. The wiper link connects the left and right wiper blades 1 so that the cushion rubber is fitted to the connecting portion so as to reduce wear and looseness.

In addition, the windshield wiper is operated by the driving force of the wiper motor (not shown), and the wiper motor has a two-speed type that shifts to two speeds of one speed and a low speed, high speed to operate at a constant speed. Therefore, it is divided into winding type wound by field coil and field magnet magnet using permanent magnet.

As shown in FIG. 2, when the wiper switch 10 is closed, the winding type winding type wiper motor closes the wiper switch 10, and a current flows through the winding coil L1 (5) and the decoupling coil L2 (6) to rotate the motor 7. The rotation force of) is large and constant rotational speed when the rain or snow falls relatively low, or when the rotational speed is slow and large rotational force is required to operate at low speed, the action of the lottery-type electric motor. In addition, when the wiper switch 10 is pulled in two stages, a current flows through the winding coil L1 (5) to become a winding motor. At this time, the decentralized coil L2 (6) does not flow current, so the magnetic flux is extinguished, the rotational speed is increased, and the rotational force is adapted to the load and rotates.

In addition, when the wiper switch (not shown) is turned on in any of the operating positions, the wiper blade 1 is referred to as an automatic exact position device, in which the wiper blade 1 comes to a certain position in the downward direction and stops.

In the conventional winding type lottery motor fixed position device, as shown in Figs. 2 and 3, the cam 4 and the armature (not shown) are connected and rotated, so that the wiper switch (not shown) can be opened at any position. While the contact is closed by the cam 4, the wiper motor (not shown) continues to rotate, and when the wiper blade 1 is in position, a rubbing block (not shown) is placed in the groove of the cam 4. Stops the wiper motor. Since this exact position is determined by the position of the cam 4, the wiper blade 1 stop position is always a constant position.

In general, however, when the vehicle is parked, dust is accumulated on the contact area between the windshield and the windshield wiper, and when the driver inadvertently operates the wiper, the dust may damage the wiper blade and the windshield. Not only shorten the life of the wiper blades and windshields, but also damage to the wiper blades and windshields obstructs the driver's front field of view, especially on rain or snowy days.

There was a problem causing a problem in safe driving.

Accordingly, the present invention has been made to solve the above problems, and provided with an actuator for moving the wiper arm in the up and down direction on the upper portion of the vehicle cowl panel, the electrical signal generated when the ignition switch is turned on Drive the wiper arm downward by driving the actuator through comparator, transistor 1 and relay 1, and drive the actuator through inverter, transistor 2 and relay 2 when the ignition switch is turned off to move the wiper arm upward It is an object of the present invention to provide a wiper arm up and down operating system interlocked with an ignition switch that operates.

1 is a schematic structural diagram of a windshield wiper provided in a vehicle;

FIG. 2 is a circuit diagram schematically illustrating a state in which a cam and an armature rotate in conjunction with a winding type lottery motor positioning device provided in a conventional vehicle.

3 is a circuit diagram schematically illustrating a state in which a motor is stopped by opening a contact of a cam in the winding type lottery motor positioning device provided in a conventional vehicle;

4 is a view schematically showing that the wiper arm of the wiper arm up and down operating system interlocked with the ignition switch according to the present invention operates upward by the actuator;

5 is a circuit diagram schematically showing a wiper arm up and down operating system interlocked with an ignition switch according to the present invention.

* Explanation of symbols on the main parts of the drawing

DESCRIPTION OF SYMBOLS 1: Wiper blade 2: Wiper arm 3: Arm spring 4: Cam 5: Series coil L1 6: Decoil coil L2 7: Electric motor 8: Wind shield 9: Cowl panel 10: Actuator 11: Motor 12: Rod 20: Ignition switch 21 Comparator 22: Transistor 1 23: Relay 1 31: Inverter 32: Transistor 2 33: Relay 2

The present invention for achieving the above object is to generate a predetermined electrical signal to drive the ignition switch of the vehicle driving device, and receives the electrical signal of the ignition switch voltage drop by the resistor R1 through the (+) terminal A comparator that receives a reference voltage to generate a high signal when the electrical signal of the voltage-lowed ignition switch is greater than the reference voltage and generates a low signal when the voltage is smaller than the reference voltage to prevent a malfunction of the circuit through the negative terminal; Transistor 1, which has a switching function which is turned on when the output signal of the comparator is a high signal and turned off when it is a low signal, and relay 1 which flows or cuts the battery power into the circuit according to the switching action of the transistor 1. And when the electrical signal is not generated in the ignition switch generates a high signal and An inverter that generates a low signal when an electrical signal is generated from the switch, a transistor 2 that switches on when the output signal of the inverter is a high signal, and turns off when the output signal is a high signal, and the transistor A relay 2 is provided at the upper part of the vehicle cowl panel and a relay 2 for supplying or interrupting battery power to a circuit according to the switching action of 2, and when the battery power is supplied through the relay 1, the motor is rotated forward to perform a load. It is characterized by consisting of an actuator to lower the direction and when the battery power is supplied through the relay 2 to reverse the motor to raise the rod upwards.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 4, a predetermined portion of the upper side of the vehicle cowl panel 9 includes a motor 11 generating a driving force and a rod 12 moving upward or downward by a driving force of the motor 11. An actuator 10 to be provided is provided. Since the rod 12 of the actuator 10 is in close contact with the wiper arm 2, when the power of the battery flows into the actuator 10 by the relay 1 23, the motor 11 rotates forward to load 12. ), The wiper arm 2 also moves downward by gravity, so that the wiper blade 1 connected to the wiper arm 2 is in close contact with the wind shield 8.

In addition, when the battery power is introduced into the actuator 10 by the relay 2 33, the motor 11 rotates in reverse, so that the rod 12 moves upward, and thus the wiper arm 2 also lifts upward. The wiper blade 1, which is connected to the wiper arm 2, is separated from the wind shield 8.

This action is performed by the following circuit.

As shown in FIG. 5, when the driver operates the ignition switch 20 to drive a starter (not shown) of the vehicle, the second stage of the ignition switch 20 generates a predetermined electric signal, and the electric The signal is input to the (+) terminal of the comparator 21 after the voltage drop across the resistor R. A reference voltage is input to the negative terminal of the comparator 21 to prevent a malfunction of the circuit. In the comparator 21, an electrical signal of the ignition switch 20 having the voltage drop of the positive terminal is lower than the reference voltage. A large signal generates a high signal, and a small signal generates a low signal.

The output signal of the comparator 21 is input to the base terminal of the NPN type transistor 1 22 having a switching action, and when the high signal is input to the base terminal of the transistor 1 22, the transistor 1 22 is inputted. When the emitter terminal drives the relay 1 23 through the battery power supplied to the collector terminal and the low signal is input to the base terminal of the transistor 1 22, the transistor 1 22 is turned off. Relay 1 23 does not drive.

When the relay 1 23 is driven by the transistor 1 22, the relay 1 23 rotates the motor 11 included in the actuator 10 forward to close the rod (2). 12) and the wiper arm 2 is moved downward so that the wiper blade 1 coupled to the wiper arm 2 is in close contact with the wind shield 8.

When the starter of the vehicle is in the off state, that is, when no electrical signal is generated in the ignition switch 20, the inverter 31 generates a high signal, and the high signal of the inverter 31 is an NPN for switching. When the high signal is input to the base terminal of the transistor 2 32 and the high signal is input to the base terminal of the transistor 2 32, the transistor 2 32 is turned on and emits through the battery power supplied to the collector terminal. The terminal drives relay 2 (33).

When the relay 2 33 is driven by the transistor 2 32, the relay 2 33 reversely rotates the motor 11 provided in the actuator 10 so as to be in close contact with the wiper arm 2. 12) so that the wiper arm 2 moves upwards so that the wiper blade 1 coupled to the wiper arm 2 falls off the wind shield 8.

As described above, the wiper arm up and down operating system interlocked with the ignition switch according to the present invention includes an actuator 10 for moving the wiper arm 2 upward and downward on a predetermined portion of the upper side of the vehicle cowl panel 9, The wiper arm 2 is driven downward by driving the actuator 10 through the comparator 21, the transistor 1 22, and the relay 1 23 as an electrical signal generated when the ignition switch 20 is turned on. Operating the actuator 10 through the inverter 31, the transistor 2 32 and the relay 2 33 when the ignition switch 20 is turned off, thereby operating the wiper arm 2 upwards. While the vehicle is parked, the wiper blade 1 coupled to the wiper arm 2 is removed from the wind shield 8 to prevent dust that is likely to accumulate on the contact area between the wiper blade 1 and the wind shield 8. Starting of vehicle By contact with an automatic wiper blade (1) and the windshield (8) where the value of operation has the effect of promoting the ease of operation of the vehicle and extend the life of the wiper blade (1) and the windshield (8).

Claims (1)

In the windshield wiper provided in a vehicle, Generates a predetermined electrical signal to receive the electrical signal of the ignition switch 20 for driving the starter (not shown) of the vehicle, and the ignition switch 20 voltage drop by the resistor R1 through the (+) terminal A comparator that receives a reference voltage to generate a high signal when the electrical signal of the voltage-lowed ignition switch 20 is greater than the reference voltage and generates a low signal when the voltage is smaller than the reference voltage to prevent a malfunction of the circuit through the negative terminal. (21), the transistor 1 (22) having a switching action of being switched on when the output signal of the comparator 21 is a high signal and switched off when the output signal is a low signal, and switching of the transistor 1 (22). Relay 1 (23) for supplying or blocking the battery power to the circuit according to the action, and if the electrical signal is not generated from the ignition switch 20 generates a high signal and Inverter 31 that generates a low signal when an electrical signal is generated in the shunt switch 20, and is switched on when the output signal of the inverter 31 is a high signal and switched off when a low signal is generated. Transistor 2 32 which acts, relay 2 33 which flows the battery power in or out according to the switching action of the transistor 2 32, and a predetermined portion of the vehicle cowl panel 9 above When the battery power is supplied through the relay 1 23, the motor 11 is rotated forward to lower the rod 12 downward, and the battery 11 is supplied through the relay 2 33. The upper and lower operating system of the wiper arm linked to the ignition switch, characterized in that consisting of an actuator (10) for rotating the rod 12 in the upward direction by rotating the reverse direction).