Carbon commutator

• US 6,259,183 B1
• Filed: 11/10/1999
• Issued: 07/10/2001
• Est. Priority Date: 11/13/1998
• Status: Expired due to Term

• Current Assignee: Tris, Inc.
• Original Assignee: Tris, Inc.
• Inventors: Sakaura, Yoichi, Hotta, Tokio, Yoshikawa, Noboru
• Primary Examiner(s): NGUYEN, TRAN N
• Application Number:
  US09/437,939
• Time in Patent Office: 608 Days
• Field of Search: 310/233, 310/235, 310/236, 310/237, 310/42, 295/96--98
• US Class Current: 310/233
• CPC Class Codes: H01R 39/045 the commutators being made of carbon
• CPC Class Codes: H01R 39/06 other than with external cylindrical contact surface, e.g. flat commutators

Abstract

Disclosed is a carbon commutator, comprising a plurality of metal segments each having a through-hole, a plurality of carbon segments each having a projecting portion, which contains a metal, being inserted into the through-hole to be deformed so as to join the carbon segment to the metal segment, and a commutator body on which a plurality of the metal/carbon joined segments are arranged fixedly in a manner to form a substantially circular body.

Claims

1. A carbon commutator, comprising:

a plurality of metal segments each having a though-hole;

a plurality of carbon segments each having a double layer structure consisting of a carbon layer and a metal-containing carbon layer, said metal-containing carbon layer having a projecting portion inserted into said through-hole so as to join the carbon segment and the metal segment together to form a metal-carbon joined segment; and

a commutator body on which a plurality of said metal-carbon joined segments are arranged in a manner to form a substantially circular body.

2. A carbon commutator according to claim 1, wherein said metal-containing carbon layer contains 60% to 100% by weight of a metal material.

3. A carbon commutator according to claim 2, wherein said metal-containing carbon layer contains 70% to 100% by weight of a metal material.

4. A carbon commutator according to claim 1, wherein the metal-containing carbon layer contains a metal selected from the group consisting of copper, nickel, silver, gold, tin, zinc, and alloy thereof.

5. A carbon commutator, comprising:

a plurality of metal segments each having a through-hole;

a plurality of carbon segments each having a projecting portion, said projecting portion containing 60% to 100% by weight of a metal material, each carbon segment being inserted into said through-hole and deformed so as to join the carbon segment to metal segment to form a metal-carbon joined segment; and

a commutator body on which a plurality of the metal-carbon joined segments are arranged fixedly in a manner to form a substantially circular body.

6. A carbon commutator according to claim 5, wherein said projecting portion of the carbon segment contains 70% to 100% by weight of a metal material.

7. A carbon commutator according to claim 5, wherein said projecting portion of the carbon segment contains a metal selected from the group consisting of copper, nickel, silver, gold, tin, zinc, and alloy thereof.