Shock absorbing connector

• US 7,812,485 B2
• Filed: 07/17/2007
• Issued: 10/12/2010
• Est. Priority Date: 12/18/2006
• Status: Active Grant

• Current Assignee: Zhongshan Broad-Ocean Motor Company Limited
• Original Assignee: Zhongshan Broad-Ocean Motor Company Limited
• Inventors: Wu, Huaxin, Bi, Ronghua
• Primary Examiner(s): Le; Dang D
• Application Number:
  US11/779,259
• Publication Number:
  US 20080143198A1
• Time in Patent Office: 1,183 Days
• Field of Search: 310/51, 310216-218, 310/254, 310/258, 310/259, 310/254.1
• US Class Current: 310/51
• CPC Class Codes: H02K 1/187 to inner stators
• CPC Class Codes: H02K 1/30 using intermediate parts, e.g. spiders

Abstract

A motor, including at least a stator core (1), a shaft (2) nested around the stator core (1), and shock-absorbing connector, wherein the shock-absorbing connector is disposed between the stator core (1) and the shaft (2) so as to absorb and buffer unbalanced counterforces acting on the stator core (1) and to dampen the shocks experienced by the shaft (2) and reduce the overall noise generated by the motor.

Claims

1. An electric motor comprising

a stator core (1);

a shaft (2) nested in said stator core (1);

a shock-absorbing connector comprising a rubber block (3) and a shaft sleeve (4), said shaft sleeve (4) being a separate part from said rubber block (3); and

retainer(s) (8) disposed at both sides of said rubber block (3), wherein

said shaft (2) is received in said shaft sleeve (4);

said rubber block (3) is disposed between said shaft sleeve (4) and said stator core (1);

said shock-absorbing connector is disposed between said stator core (1) and said shaft (2); and

said retainer(s) (8) are integrally formed with said rubber block and partially surround said stator core (1) and said shaft sleeve (4) in the radial direction.

2. The motor of claim 1, wherein said retainer(s) press against said stator core (1) and said shaft sleeve (4) so as to reduce axial direction movement and/or vibration of said stator core (1).

3. The motor of claim 1, wherein a plurality of grooves (12) for receiving said rubber block (3) are disposed on an outer surface of said shaft sleeve (4) and an inner surface of said stator core (1).

4. The motor of claim 1, wherein a plurality of grooves (12) for receiving said rubber block (3) is disposed on an inner surface of said stator core (1) and an outer surface of said shaft (2).

5. The motor of claim 1, wherein said shock absorbing connector is a single part and does not comprise a metal, and the height of said rubber clock is equal or is greater than the height of the stator core.

6. An electric motor comprising

a stator core (1);

a shaft (2) nested in said stator core (1); and

a shock-absorbing connector comprising a shaft sleeve (4) directly protruding out of said shaft (2), and a plurality of grooves (12) disposed on an outer surface of said shaft sleeve (4) and/or an inner surface of said stator core (1);

wherein said shock-absorbing connector further comprises a plurality of rubber rods (5) disposed inside said grooves (12).

7. The motor of claim 6 wherein said shock-absorbing connector further comprises a plurality of rivets (6) received in said rubber rods (5).

8. The motor of claim 7 wherein clamping plates (9) are disposed on an outer surface of said rubber rod (5) and said clamping plates partially surround said stator core (1) and said shaft sleeve (4) in the radial direction.

9. The motor of claim 8 wherein said rivet (6) is rivet-connected to said clamping plates (9).