Title:
POWER TRANSMISSION DEVICE
Document Type and Number:
Japanese Patent JP2022171966
Kind Code:
A
Abstract:
To provide a power transmission device that is lightweight and can be shortened in the axial direction.SOLUTION: A power transmission device includes a motor having a rotor shaft with a hollow structure, a stator with coils wound therearound, a motor frame covering the stator, a first cover arranged on the axial load side of the stator, and a second cover arranged on the axial anti-load side of the stator. The first cover is made of a non-conductive material. The shortest creepage distance between the coil end of the coil and the first cover is shorter than 6.3 mm. The second cover has an inner peripheral wall with a hollow section that is connected to the hollow structure of the rotor shaft.SELECTED DRAWING: Figure 1
Inventors:
Moriya Koji
Mitsuhiro Tamura
Mitsuhiro Tamura
Application Number:
JP2022150872A
Publication Date:
November 11, 2022
Filing Date:
September 22, 2022
Export Citation:
Assignee:
Sumitomo Heavy Industries Ltd.
International Classes:
H02K5/02; H02K5/04; H02K7/116; H02K11/215; H02K29/08
Attorney, Agent or Firm:
Hiroshi Arafune
Yoshio Arafune
Yoshio Arafune