JPS63105560U

JPS63105560U -

Info

Publication number: JPS63105560U
Application number: JP19896186U
Authority: JP
Priority date: 1986-12-27
Filing date: 1986-12-27
Publication date: 1988-07-08
Also published as: JPH0435245Y2

Description

[Brief explanation of the drawing]

第１図〜第６図は本考案によるワイパー装置の
具体例を示すものであつて、第１図は全体的な回
路構成図、第２図はブロツク図、第３図はワイパ
ーブレードの内部構造を示す側面断面図、第４図
は底面図、第５図は部分的側面断面図、第６図は
ワイパーブレード正逆転動作を説明するためのモ
ータ駆動回路図である。第７図は従来一般的なワ
イパー装置の構造説明をする側面断面図である。３０……スイツチ回路、３１……ウオツシヤー
ポンプモータ、３２……ワイパースイツチ、３３
……ダイオード、３４，３６，４１……抵抗、３
５……タイマー回路、３７……コンデンサ、３８
……駆動回路、３９……トランジスタ、４０……
リレーコイル、４２……ワイパー押圧可変装置、
４３……ワイパー駆動モータ。 1 to 6 show a specific example of the wiper device according to the present invention, in which FIG. 1 is an overall circuit diagram, FIG. 2 is a block diagram, and FIG. 3 is an internal structure of a wiper blade. 4 is a bottom view, FIG. 5 is a partial side sectional view, and FIG. 6 is a motor drive circuit diagram for explaining forward and reverse rotation of the wiper blade. FIG. 7 is a side sectional view illustrating the structure of a conventional wiper device. 30... Switch circuit, 31... Washer pump motor, 32... Wiper switch, 33
... Diode, 34, 36, 41 ... Resistor, 3
5...Timer circuit, 37...Capacitor, 38
...Drive circuit, 39...Transistor, 40...
Relay coil, 42...wiper pressure variable device,
43...Wiper drive motor.

Claims

[Scope of utility model registration request]

In a drive circuit for a wiper device, a wiper arm that supports a wiper blade is rotatably attached to an arm head, and a coil spring is provided that biases the wiper arm in a direction to press the wiper blade against a glass surface,
A wiper switch, a timer circuit that measures a predetermined time when the wiper switch is set to the water injection (WASH) position, and outputs a positive voltage for that time, and the positive voltage output from the timer circuit. The wiper pressure variable circuit includes a relay drive circuit that operates the switching relay circuit for the predetermined period of time, and a wiper pressure variable circuit that drives and controls the built-in motor in accordance with the forward and reverse movement of the wiper blade to increase the pressure on the wiper blade. 1. A drive circuit for a wiper device, characterized in that the drive circuit is configured to increase the pressure of a wiper blade against a wiped surface for a certain period of time in accordance with jetting control of washer fluid.