Title:
モータ軸
Document Type and Number:
Japanese Patent JP7112541
Kind Code:
B2
Abstract:
The present disclosure discloses an electric-machine shaft, wherein the electric-machine shaft is provided with a hollow structure (1) in an axial direction at least one end, and the hollow structure (1) is, at a position close to the end, provided with a coolant pumping mechanism having a spiral groove (2), so that the coolant is able to enter the hollow structure (1) by an attractive force generated by rotation of the electric-machine shaft; the spiral groove (2) is provided on an inner surface of an annular member (3), the annular member (3) is fixedly mounted to the hollow structure (1), or the spiral groove (2) is directly provided on an inner surface of the hollow structure (1); and the electric-machine shaft is provided with a plurality of groups of coolant channels (4) in an axial direction, the coolant channels (4) are in communication with the hollow structure (1), and when the electric-machine shaft is rotating, oil liquid inside the hollow structure (1) is thrown out by the coolant channels (4), to cool components inside an electric-machine housing. In the present disclosure, by providing the hollow structure (1) and the coolant pumping mechanism, a structure similar to a pump is formed, and when the electric-machine shaft is rotating, the coolant can be attracted into the hollow structure (1), and then be thrown out by the coolant channels (4), which realizes the cooling and lubrication of the components inside the electric-machine housing, and improves the capacity of heat dissipation of the electric machine.
Inventors:
Yohei
Application Number:
JP2021019042A
Publication Date:
August 03, 2022
Filing Date:
February 09, 2021
Export Citation:
Assignee:
Jin-Jin Electric Technologies Company Limited
International Classes:
H02K1/32; H02K9/19
Domestic Patent References:
| JP2010104206A | ||||
| JP2001197705A | ||||
| JP2000102216A | ||||
| JP8001616U | ||||
| JP2004096865A |
Foreign References:
| WO2011132784A1 |
Attorney, Agent or Firm:
Keiko Kawakami
Sanshin Akio
Yutaka Tabata
Sanshin Akio
Yutaka Tabata