Title:
DC MOTOR HAVING CAPACITOR-PROVIDED COMMUTATOR, AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP2022142804
Kind Code:
A
Abstract:
To provide a small and low-cost ring capacitor-provided commutator motor in which a motor weight is not increased and which has high reliability in high-speed rotation and heat generation in an armature.SOLUTION: A small DC motor is provided with a commutator 19 that is fixed to a rotation shaft. An extended thin piece part 191 extending in the axial direction outwardly from an outer end surface of the commutator and having a width shorter than the circumferential length of a commutator segment 190 of the commutator, is integrally provided to a position, of the commutator segment, corresponding to the outer circumferential side of the outer end surface. The extended thin piece parts of a plurality of the commutator segments, an insulating tubular part 24, and an outer end surface 241 of the commutator constitute an element housing space 28 that has a recess shape. An annular printed board 260 having a plurality of capacitors 262 mounted on a surface thereof is housed in the element housing space. Any one of the capacitors and the corresponding extended thin piece part are integrally coupled with a solder.SELECTED DRAWING: Figure 3
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Inventors:
HAYASHI KOJI
Application Number:
JP2021042992A
Publication Date:
October 03, 2022
Filing Date:
March 17, 2021
Export Citation:
Assignee:
IGARASHI DENKI SEISAKUSHO KK
International Classes:
H02K23/00; H01R39/04; H02K11/028; H02K13/00
Attorney, Agent or Firm:
Soichi Takezawa
Takenouchi Masaru
Yoshinori Yokobori
Takenouchi Masaru
Yoshinori Yokobori