Title:
WIPER DEVICE
Document Type and Number:
Japanese Patent JP3865537
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a wiper device which can eliminate a difference in wiping range due to the difference in inertia force between a low speed mode and a high speed mode, and smoothly and accurately switch the operation mode and perform the auto stop control at the time of stopping.
SOLUTION: By a motor driving circuit 11 having mainly four relays L1 to L4 and two transistors TR1, TR2, in a low speed mode, an electric current directing from a low brush terminal 3a of a wiper motor 3 to a common brush terminal 3c is supplied to rotate the wiper motor 3 at a low speed, and on the other hand, in a high speed mode, an electric current directing from the common brush terminal 3c to a high brush terminal 3b is supplied to reverse the wiper motor 3 at a high speed. During low speed rotation, an eccentric metal connecting a motor arm and a link connecting rod is held in such a position as to increase the length of the motor arm, and during high speed reversion, it is held in such a position as to make the length of the motor arm shorter than that in the low speed normal rotation.
Inventors:
Masaru Kato
Yasuki Matsumoto
Haruo Yamazaki
Yasuki Matsumoto
Haruo Yamazaki
Application Number:
JP19933299A
Publication Date:
January 10, 2007
Filing Date:
July 13, 1999
Export Citation:
Assignee:
Automotive Electric Industry Co., Ltd.
International Classes:
B60S1/08; B60S1/18; B60S1/24; F16C11/04; H02P1/22; (IPC1-7): B60S1/08; B60S1/18; B60S1/24; F16C11/04
Domestic Patent References:
| JP63232053A | ||||
| JP7165021A | ||||
| JP9207719A | ||||
| JP1120619A |
Attorney, Agent or Firm:
Katsuji Matsuda
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