Ceiling fan motor

Patent metadata

Field	Value
Publication number	US-9859773-B2
Application number	US-201514713236-A
Country	US
Kind code	B2
Filing date	May 15, 2015
Priority date	May 21, 2014
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

A ceiling fan motor includes a stator assembly and a rotor. The stator assembly includes an iron core. The rotor is rotatably coupled with the stator assembly and includes a housing, a first positioning member and at least one permanent magnet. The housing includes a lateral wall. The lateral wall is enclosed to form an inner space adapted to receive the iron core. The first positioning member is coupled with the lateral wall. The at least one permanent magnet is positioned by the first positioning member. The first positioning member includes a plurality of air-guiding blades.

First claim

What is claimed is:

1. A ceiling fan motor comprising:
a stator assembly comprising an iron core; and
a rotor rotatably coupled with the stator assembly and comprising a housing, a first positioning member and a plurality of permanent magnets, wherein the housing comprises a lateral wall and a bottom cover coupled with the lateral wall, wherein the lateral wall and the bottom cover jointly form an inner space receiving the iron core, wherein the first positioning member is coupled with the lateral wall, and wherein the plurality of permanent magnets is positioned by the first positioning member,
wherein the first positioning member comprises a support and a plurality of walls fixed on the support and spaced from each other in a circumferential direction surrounding an axial direction of the rotor, wherein each of the plurality of walls includes a first end and a second end, wherein each of the first end and the second end of the plurality of walls includes an L-shaped extension having a radial section extending radially inwards in a radial direction perpendicular to the axial direction and a circumferential section extending from a free end of the radial section in the circumferential direction, wherein two adjacent L-shaped extensions respectively of two adjacent walls of the plurality of walls and the support together define a positioning notch receiving one of the plurality of permanent magnets,
wherein the first positioning member further comprises a plurality of air-guiding blades, wherein each of the plurality of air-guiding blades is fixed to one of the plurality of walls, is spaced from the bottom cover in the axial direction of the rotor, and is located between the one of the plurality of walls and the iron core in a radial direction perpendicular to the axial direction.

2. The ceiling fan motor as claimed in claim 1 , wherein each of the plurality of air-guiding blades extends from the first positioning member towards the iron core in the radial direction.

3. The ceiling fan motor as claimed in claim 1 , wherein the housing forms a plurality of vents extending from an outer surface to an inner surface thereof.

4. The ceiling fan motor as claimed in claim 3 , wherein the plurality of vents is arranged on an edge of the lateral wall adjoining the bottom cover, and wherein the plurality of vents is aligned with the plurality of air-guiding blades in the axial direction of the rotor.

5. A ceiling fan motor comprising:
a stator assembly comprising an iron core; and
a rotor rotatably coupled with the stator assembly and comprising a housing, a first positioning member, and at least one permanent magnet, wherein the housing comprises a lateral wall, wherein the lateral wall is enclosed to form an inner space receiving the iron core, wherein the first positioning member is coupled with the lateral wall, wherein the at least one permanent magnet is positioned by the first positioning member,
wherein the first positioning member comprises a plurality of air-guiding blades and at least one positioning notch, wherein the at least one permanent magnet is fixed in the at least one positioning notch, wherein the first positioning member further comprises a support and a plurality of walls, wherein the support is in an annular form and is connected to the plurality of walls, wherein adjacent two of the plurality of walls and the support jointly form one of the at least one positioning notch,
wherein the housing further comprises a plurality of fixing notches, wherein a plurality of engaging portions is connected to one face of the first positioning member facing the plurality of fixing notches, wherein the plurality of engaging portions is engaged with the plurality of fixing notches,
wherein the housing comprises a bottom cover coupled with the lateral wall, wherein the lateral wall and the bottom cover jointly form the inner space, wherein the plurality of fixing notches is arranged on an edge of the lateral wall adjoining the bottom cover, wherein the plurality of engaging portions is arranged on the support, and wherein the plurality of engaging portions is aligned with the plurality of fixing notches in the axial direction of the rotor.

6. The ceiling fan motor as claimed in claim 5 , wherein the rotor further comprises a second positioning member coupled to the lateral wall, wherein the second positioning member also comprises at least one positioning notch, wherein the at least one positioning notch of the first positioning member is aligned with the at least one positioning notch of the second positioning member in the axial direction of the rotor, and wherein the at least one permanent magnet is received in the at least one positioning notch of the first positioning member and the at least one positioning notch of the second positioning member.

7. The ceiling fan motor as claimed in claim 6 , wherein the second positioning member also comprises a plurality of air-guiding blades misaligned with the plurality of air-guiding blades of the first positioning member in the axial direction of the rotor.

8. The ceiling fan motor as claimed in claim 6 , wherein the at least one positioning notch of each of the first positioning member and the second positioning member comprises a plurality of positioning notches, wherein the at least one permanent magnet includes a plurality of permanent magnets, and wherein each of the plurality of permanent magnets is fixed in one of the plurality of positioning notches of the first positioning member and one of the plurality of positioning notches of the second positioning member.

9. The ceiling fan motor as claimed in claim 5 , wherein the at least one permanent magnet comprises a plurality of permanent magnets, wherein the at least one positioning notch comprises a plurality of positioning notches, and wherein each of the plurality of permanent magnets is fixed in a respective one of the plurality of positioning notches.

10. The ceiling fan motor as claimed in claim 6 , wherein the at least one positioning notch of the second positioning member comprises a plurality of positioning notches, wherein the second positioning member also comprises a support in an annular form and a plurality of walls connected to the support, wherein two adjacent walls and the support of the second positioning member jointly form one of the plurality of positioning notches of the second positioning member, wherein the second positioning member also comprises a plurality of air-guiding blades, and wherein each of the plurality of air-guiding blades of the second positioning member is fixed to one of the plurality of walls of the second positioning member.

11. A ceiling fan motor comprising:
a stator assembly comprising an iron core; and
a rotor rotatably coupled with the stator assembly and comprising a housing, a first positioning member, a second positioning member, and at least one permanent magnet, wherein the housing comprises a lateral wall, wherein the lateral wall is enclosed to form an inner space receiving the iron core, wherein the first positioning member and the second positioning member are coupled with the lateral wall,
wherein the first positioning member comprises a plurality of air-guiding blades and at least one positioning notch, wherein the at least one permanent magnet is fixed in the at least one positioning notch,
wherein the second positioning member also comprises at least one positioning notch, and wherein the at least one positioning notch of the first positioning member is aligned with the at least one positioning notch of the second positioning member in an axial direction of the rotor, wherein the at least one permanent magnet is fixed in the at least one positioni

Assignees

• Sunonwealth Electric Machine Ind Co Ltd

Inventors

• Yin Tso-Kuo
• Shan Duo-Nian
• Chiou Bo-Wei
• Lu Yu-Yuan

Classifications

• H02K1/32

  with channels or ducts for flow of cooling medium · CPC title

• F04D25/088

  Ceiling fans · CPC title

• H02K1/28

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

• H02K9/06 Primary

  with fans or impellers driven by the machine shaft · CPC title

• H02K1/2786

  Outer rotors · CPC title