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Patent Searching and Data


Title:
MOTOR
Document Type and Number:
Japanese Patent JP2017195749
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor capable of further reducing spark during separation of a power feed brush from a segment.SOLUTION: A tip part of two power feed brushes 64 in a positive pole and the two power feed brushes 64 in a negative pole is sequentially slid and contacted to a plurality of segments 48 arranged in a peripheral direction of a commutator 45. One power feed brush 64 of the power feed brushes 64 in the positive pole is a first positive pole side power feed brush 81 all of which is a low resistance part 92. The other power feed brush 64 is a second positive pole side power feed brush 82 which has an electric resistance value higher than that of the low resistance part 92. A time for separating from each segment 48 is the same in the first and second positive pole side power feed brushes 81 and 82. Further, in one first positive pole side power feed brush 81 of the two power feed brushes 64 in the positive pole, an extension line M1 extending a center line L1 of the first positive pole side power feed brush 81 to a commutator 45 side passes through a front side of a rotation direction R of the commutator 45 from the center axis line L of the commutator 45.SELECTED DRAWING: Figure 2

Inventors:
SHIGA AKIRA
ICHIKAWA TETSUAKI
KIHIRA KAZUTOSHI
Application Number:
JP2016086405A
Publication Date:
October 26, 2017
Filing Date:
April 22, 2016
Export Citation:
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Assignee:
ASMO CO LTD
International Classes:
H02K13/10; H01R39/46; H02K13/00
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda