Rotor structure of WRSM motor

Patent metadata

Field	Value
Publication number	US-10476331-B2
Application number	US-201715585619-A
Country	US
Kind code	B2
Filing date	May 3, 2017
Priority date	Dec 13, 2016
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

The present disclosure provides a rotor of the wound rotor driving motor including: a first core body having an outer surface and an inner surface, wherein the first core body forms a space inside of the first core body; a second core body being inserted into inside of the first core body, wherein the second core body contacts with the inner surface of the first core body; and a coil assembly combined to the second core body in a radial direction.

First claim

What is claimed is:

1. A rotor of a wound rotor driving motor, comprising:
a first core body having an outer surface and an inner surface, wherein the first core body forms a space inside the first core body and has rotor shoes connected with each other at a predetermined space along a circumferential direction;
a second core body forming a rotor tees, wherein the rotor tees contact with an inside of the rotor shoes in a radial direction and the second core body is inserted into an inside of the first core body; and
a coil assembly combined to the rotor tees of the second core body,
wherein the first core body is formed as an integral cylindrical shape and both ends of the first core body are open, and
wherein the first core body comprises:
walls integrally connecting both ends of the neighboring rotor shoes, wherein the walls are formed to protrude around a shaft of the second core body in the inner surface of the first core body.

2. The rotor of claim 1 , wherein the second core body is inserted into the inside of the first core body, wherein the second core body combines the coil assembly to the rotor tees.

3. The rotor of claim 1 , wherein the walls are formed by dividing a space of the coil assembly in the inner surface of the first core body along a circumferential direction.

4. The rotor of claim 1 , wherein the walls are formed as a triangular pyramid shape.

5. The rotor of claim 1 , wherein the walls are formed as a wedge supporting the coil assembly.

6. The rotor of claim 1 , wherein the coil assembly comprises:
a bobbin combined to a rotor tees of the second core body; and
a rotor coil wound around the bobbin.

7. The rotor of claim 6 , wherein the coil assembly located close to each other is insulated from the walls by a molding resin.

8. A rotor of a wound rotor driving motor comprising:
a first core body, the first core body comprising:
an outer surface and an inner surface;
a space inside of the first core body;
rotor shoes spaced apart at a predetermined space along a circumferential direction; and
walls integrally connecting both ends of the rotor shoes inside of the first core body;

a second core body, the second core body comprising:
a shaft insertion hole at a center of the second core body; and
rotor tees combined to an inner surface of the rotor shoes in a radial direction, and inserted into inside of the first core body; and

a coil assembly, wherein the coil assembly is combined to the rotor tees of the second core body and disposed between the walls of the first core body,
wherein the walls are integrally formed at the first core body and the walls are formed as a wedge supporting the coil assembly between the coil assembly.

9. The rotor of claim 8 , wherein the coil assembly comprises:
a bobbin combined to the rotor tees of the second core body; and
a rotor coil wound around the bobbin.

10. The rotor of claim 9 , wherein the bobbin comprises:
a bobbin body coupled to the rotor tees;
a first bobbin flange integrally formed at one end of the bobbin body; and
a second bobbin flange integrally formed at the other end of the bobbin body.

11. The rotor of claim 10 , wherein the first bobbin flange is disposed at one end of the shaft insertion hole, wherein the first bobbin flange is formed to have a smaller width than the second bobbin flange.

12. The rotor of claim 9 , wherein the rotor coil of the coil assembly located close to each other is insulated from the walls by a molding resin.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Do Sanghwa
• Park Jae Bum
• Lee Hee Ra
• Kim Kyoungbum

Classifications

• H02K15/022

  with salient poles · CPC title

• H02K3/527

  applicable to rotors only · CPC title

• H02K1/22 Primary

  Rotating parts of the magnetic circuit · CPC title

• H02K3/325

  for windings on salient poles, such as claw-shaped poles · CPC title

• H02K1/28 Primary

  Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures · CPC title