Commutator assembly for motor

• US 6,949,859 B2
• Filed: 09/26/2001
• Issued: 09/27/2005
• Est. Priority Date: 05/12/2000
• Status: Expired due to Term

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Okada, Keigo, Nakayama, Eiji, Yamamoto, Masayoshi, Ohata, Katsumi
• Primary Examiner(s): Lam, Thanh
• Application Number:
  US09/962,134
• Publication Number:
  US 20030057798A1
• Time in Patent Office: 1,462 Days
• Field of Search: 310/234, 310/233, 310/211, 310/214, 310/216
• US Class Current: 310/234
• CPC Class Codes: H01R 39/32 Connections of conductor to commutator segment
• CPC Class Codes: H02K 13/04 Connections between commutator segments and windings

Abstract

A commutator assembly for a motor has a recessed portion formed to each commutator segment so that coils, which are pressed and deformed by bending the hooks of commutator segments, can be accommodated in the recessed portion. With this arrangement, the commutator assembly can improve the reliability of electric connection of the hook of the commutator segments with a conductive wire.

Claims

1. A commutator assembly for a motor, comprising:

a commutator including a base secured to a shaft to which an armature is secured and commutator segments disposed on the outer peripheral surface of said base in a peripheral direction, said commutator segments having hooks formed on one side thereof which are bent to lock in place a plurality of conductive wires,

wherein a recessed portion, in which the plurality of conductive wires, compressed and deformed by the bending of said hooks, are accommodated, is formed in each of said commutator segments.

2. A commutator assembly according to claim 1, wherein press and deformation promoting means is formed to said recessed portion to promote the press and deformation of the conductive wires.

3. A commutator assembly according to claim 2, wherein said press and deformation promoting means comprises a stepped portion.

4. A commutator assembly according to claim 1, wherein the plurality of conductive wires include conductive wires formed of a different material.

5. A commutator assembly for a motor, comprising:

a commutator including a base secured to a shaft to which an armature is secured and commutator segments disposed on the outer peripheral surface of said base in a peripheral direction, said commutator segments having hooks formed on one side thereof which are bent to lock in place a plurality of conductive wires,

wherein a recessed portion, in which said plurality of conductive wires, compressed and deformed by the bending of said hooks, are accommodated, is formed in each of said hooks.