Title:
DRIVE CIRCUIT OF DOUBLE LOCK MOTOR
Document Type and Number:
Japanese Patent JP2022139075
Kind Code:
A
Abstract:
To provide a drive circuit of a double lock motor capable of extending long life of a brush motor.SOLUTION: A drive circuit of a double lock motor consists of a H-bridge circuit consisting of a first half-bridge circuit 15 and a second half-bridge circuit 16 and a relay circuit 20. By using the relay circuit 20 in this way, it becomes possible to suppress occurrences of leakage current and to suppress a flow of minute currents to a door lock motor M1 or a double lock motor M2 while they are stopped. Therefore, it becomes possible to suppress wear of the brush contacts of the brush motor constituting the door lock motor M1 and the double lock motor M2, suppress occurrences of contact point failures, and extend the life of the brush motors.SELECTED DRAWING: Figure 1
Inventors:
OGASAWARA MASARU
WATANABE KOICHI
WATANABE KOICHI
Application Number:
JP2021039303A
Publication Date:
September 26, 2022
Filing Date:
March 11, 2021
Export Citation:
Assignee:
DENSO ELECTRONICS CORP
International Classes:
H02P5/68; H02J1/00; H02J7/00
Attorney, Agent or Firm:
Patent Attorney Corporation Yuai Patent Office