RING VARISTOR-BASED METHOD FOR REDUCING ELECTROMAGNETIC INTERFERENCE OF MOTOR

• US 20170288513A1
• Filed: 09/03/2014
• Published: 10/05/2017
• Est. Priority Date: 09/03/2014
• Status: Abandoned Application

• Current Assignee: Guangdong Zhaoqing L&V Co. Ltd. (Leggett & Platt Incorporated)
• Original Assignee: Guangdong Zhaoqing L&V Co. Ltd. (Leggett & Platt Incorporated)
• Inventors: FENG, Chen, LI, Yaoping
• Application Number:
  US15/508,821
• Publication Number:
  US 20170288513A1
• Time in Patent Office: Days
• CPC Class Codes: H01C 7/10 voltage responsive, i.e. varistors
• CPC Class Codes: H01R 43/06 Manufacture of commutators
• CPC Class Codes: H02K 11/028 Suppressors associated with the rotor
• CPC Class Codes: H02K 13/105 Spark suppressors associated with the commutator
• CPC Class Codes: H02K 15/02 of stator or rotor bodies

Abstract

A ring varistor-based method for reducing electromagnetic interference of a motor, a corresponding motor commutator, and the motor. The method comprises: forming a counter bore in an end portion of a motor commutator; and placing a ring varistor into the counter bore

Claims

1. A kind of method for reducing the motor electromagnetic interference, the method comprising:

providing a counter bore at the an end portion of a motor commutator; and

placing the a ring-shaped varistor into the counter bore.

2. The method of claim 1, further comprising:

soldering the ring-shaped varistor to the motor commutator.

3. The method of claim 1, further comprising:

gluing a layer of a conductive sponge on a silver layer of the ring-shaped varistor prior to placing the ring-shaped varistor into the counter bore.

8. The method of claim 3, wherein placing the ring-shaped varistor into the counter bore includes positioning the conductive sponge in contact with the motor commutator.

4. A motor commutator having an end portion with a counter bore, the counter bore configured to receive a ring-shaped varistor.

5. The motor commutator of claim 4, wherein the ring-shaped varistor is configured to be soldered to the motor commutator.

6. The motor commutator of claim 4, wherein the ring-shaped varistor is configured for coupling to a layer of a conductive sponge, and the motor commutator is configured to contact the conductive sponge.

7. A motor having which the motor commutator claim 4.