KR20030097221A - Conductive heating element embedded wiper blde for automobile - Google Patents

Abstract

PURPOSE: A wiper blade having a conductive heating element is provided to prevent the damage of the wiper blade at a sub-zero temperature by installing the conductive heating element for heating the wiper blade. CONSTITUTION: A conductive heating element(11) is installed at the inside of a wiper blade(10). A first terminal(12) and a second terminal(13) are connected to both ends of the conductive heating element, respectively, and protrude from the top of the wiper blade. A control circuit(20) is connected to the terminals and the conductive heating element in series, and controls the conductive heating element.

Description

Conductive heating element embedded wiper blde for automobile

The present invention relates to a wiper blade with a built-in conductive heating element for automobiles, and more particularly, a conductive heating element is embedded in the wiper blade, and a wiper blade made of rubber material is generated by heating of the conductive heating element by applying a current to the conductive heating element. By providing flexibility, it is possible to prevent the wiper blade from being damaged under the freezing temperature in winter, and to remove ice or frost while compressing the windshield glass as a whole. The present invention relates to a wiper blade with a built-in conductive heating element, which can further improve quality.

In general, a windshield of a vehicle is provided with a wiper system for wiping the windshield glass to secure visibility on a rainy day or to remove dust and dirt accumulated on the windshield glass.

In addition, in the case of wiping the surface of the windshield glass by operating the wiper motor, the washer liquid is ejected to facilitate the movement of the wiper blade and to remove the contaminants on the windshield glass.

Generally, as shown in FIG. 2, an automobile wiper device includes a motor unit 100 for generating power, a link unit 200 for transmitting power, and a wiper blade unit 300 for wiping windshield glass. have.

The wiper motor 110 of the motor unit 100 has a gear case for decelerating rotation, and the wiper blade 330, which will be described later, is operated at a low speed and a high speed by converting currents to the series coil and the decentralized field coil. It works.

Most of the link unit 200 is a mechanism for interlocking the left and right wiper blades 330, and the left and right drive shafts are installed on the subordinate link 210 and the support plates respectively attached to the lower left and right sides of the windshield glass. 250 and 260, a driving arm 230 connected to lower ends of the left and right driving shafts 250 and 260, and a transmission link 220 connecting the driving arm 230.

The wiper blade unit 300 includes left and right wiper arms 310 and 320 connected to the left and right drive shafts 250 and 260 of the link unit 200, and the left and right wiper arms 310 and 320, respectively. Removably coupled to one end of the) is made of a rubber wiper blade 330 in contact with the windshield glass.

In this case, as shown in FIG. 3, the wiper blade 330 is bent along the longitudinal direction of the wiper blade 330 above the edge portion 330a and the edge portion 330a friction with the windshield glass. The groove 330b is formed, and when the wiper blade 330 is rotated left / right, the bending groove 330b is flexibly bent in a direction opposite to the moving direction of the wiper blade 330.

This increases the surface rubbed with the glass in the edge portion 330a, and smoothly moves the surface in which the edge portion 330a is rubbed whenever the moving direction of the wiper blade 330 is changed.

However, since the wiper blade 330 is made of a soft rubber material, there is a disadvantage in that it hardens in the winter season, so that the wiper blade 330 may be damaged during the wiper operation, and the wiper blade at a temperature below zero in winter. Since the 330 is frozen, it may not be smoothly adhered to the entire windshield glass surface, and thus may not be wiped well. As a result, an accident may occur due to an unclear field of view.

Accordingly, the present invention has been made in order to solve the above problems, a built-in conductive heating element in the wiper blade, by applying a current to the power supply to the conductive heating element rubber wiper blade is flexible by the heating of the conductive heating element By making it possible to prevent the damage of the wiper blade under the temperature below freezing in winter, it is possible to remove the ice or frost while pressing the windshield glass as a whole, thereby improving the quality of the vehicle according to the functional enhancement It is also an object of the present invention to provide a wiper blade built-in conductive heating element for automobiles that can be further enhanced.

1 is a block diagram showing a conductive heating element built-in wiper blade for automobiles according to the present invention

Figure 2 is a perspective view showing a conventional general wiper device

3 is a cross-sectional view showing a conventional wiper blade.

<Explanation of symbols for the main parts of the drawings>

10 wiper blade 11: conductive heating element

11a: conductive material 12: first terminal

13: second terminal 20: control circuit

21: power supply 22: diode

23: operation switch 24: relay

24a: coil 24b: plate terminal

25: transistor

Hereinafter, the features of the present invention for achieving the above object are as follows.

Automotive heating element built-in wiper blade according to the present invention includes a conductive heating element (11) built in the longitudinal direction inside the wiper blade (10);

A first terminal 12 and a second terminal 13 connected to both ends of the conductive heating element 11 and protruding from the top of the wiper blade 10;

And a control circuit 20 connected in series with the first terminal 12 and the second terminal 13 and the conductive heating element 11 to control the heating of the conductive heating element 11.

In particular, the control circuit 20 includes a power supply unit 21;

A diode (22) having a rectifying characteristic for flowing the current from the power supply (21) in only one direction and not in the opposite direction;

An operation switch 23 for controlling the flow of current by an opening and closing operation;

A relay 24 for applying current to the coil 24a and allowing the plate terminal 24b to be connected to apply current;

It is characterized in that the circuit composed of a transistor 25 for amplifying the energized current.

Hereinafter, the configuration of the present invention with reference to the accompanying drawings in detail.

1 is a block diagram showing a conductive heating element built-in wiper blade for automobiles according to the present invention.

Here, reference numeral 10 denotes a wiper blade.

As shown in FIG. 1, the wiper blade 10 has a conductive heating element 11 embedded therein in a longitudinal direction, and a first terminal 12 and a first terminal 12 connected to the conductive heating element 11 at an upper end thereof. The two terminals 13 protrude to a predetermined length, and the front ends of the first terminal 12 and the second terminal 13 are connected to a control circuit 20 configured to be connected to the power supply 21. .

The conductive heating element 11 is a rubber material in which a conductive material 11a that is electrically conductive and generates heat is inserted. The conductive material 11a is made of carbon steel, copper, copper, or the like, which is generally a metal having heat.

The control circuit 20 has a power supply 21, a diode 22 having a rectification characteristic for flowing a current from the power supply 21 in only one direction and not in the opposite direction, and opening and closing operation An operating switch 23 for controlling the flow of current by means of the current, a relay 24 for applying current by applying a current to the coil 24a and allowing the plate terminal 24b to be connected, and a transistor for amplifying the energized current. It consists of a circuit (25).

Next, the operation principle of the present invention having such a configuration will be described.

When ice or frost is caught on the windshield glass surface at a temperature below zero in winter, when the driver turns on the operation switch 23, the current of the power supply 21 is relayed by the on operation of the operation switch 23. At this time, when a current is applied to the coil 24a, the plate terminal 24b is connected and energized.

The current from the relay 24 is amplified by the transistor 25 and applied to the wiper blade 10, and the current applied to the wiper blade 10 is applied to the conductive heating element 11 through the first terminal 12. Supplied.

The conductive heating element 11 supplied with the current generates heat, and the supplied current is grounded through the second terminal 13.

Therefore, when the conductive material 11a of the conductive heating element 1 of the wiper blade 10 generates heat, it is possible to quickly remove ice or frost while being pressed against the windshield glass surface, and a rubber wiper blade ( 10) can be flexible in a short time, and if the driver selectively turns off the operation switch 23, the present invention will not work so that it can be operated only when necessary.

As described above, the wiper blade for a vehicle-containing conductive heating element according to the present invention applies the current of the power supply unit to the conductive heating element embedded in the wiper blade so that the rubber wiper blade has flexibility by the heat generation of the conductive heating element. In this way, it is possible to prevent the wiper blade from being damaged under the freezing temperature in winter, and to remove ice and frost while compressing the windshield glass as a whole. It can increase the effect.

Claims (2)

A conductive heating element 11 embedded in the wiper blade 10 in the longitudinal direction; A first terminal 12 and a second terminal 13 connected to both ends of the conductive heating element 11 and protruding from the top of the wiper blade 10; The first terminal 12 and the second terminal 13, the vehicle is characterized in that it comprises a control circuit 20 is connected in series with the conductive heating element 11, the heating circuit for controlling the conductive heating element 11 Wiper blade with built-in conductive heating element. 2. The apparatus of claim 1, wherein the control circuit (20) comprises: a power supply (21); A diode (22) having a rectifying characteristic for flowing the current from the power supply (21) in only one direction and not in the opposite direction; An operation switch 23 for controlling the flow of current by an opening and closing operation; A relay 24 for applying current to the coil 24a and allowing the plate terminal 24b to be connected to apply current; Wiper blades with a built-in conductive heating element for automobiles, characterized in that the circuit is composed of a transistor 25 for amplifying the energized current.