INTERMEDIATE CONNECTION MEMBER, STATOR AND MOTOR

• US 20120126646A1
• Filed: 11/14/2011
• Published: 05/24/2012
• Est. Priority Date: 11/19/2010
• Status: Active Grant

• Current Assignee: Nidec Corporation
• Original Assignee: Nidec Corporation
• Inventors: NAKAGAWA, Airi, YOKOGAWA, Tomoyoshi
• Granted Patent: US 8,729,755 B2
• Time in Patent Office: Days
• US Class Current: 310/71
• CPC Class Codes: H02K 2203/09 Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
• CPC Class Codes: H02K 3/522 for generally annular cores with salient poles
• CPC Class Codes: H02K 5/225 Terminal boxes or connection arrangements specially adapted for submersible motors H02K5/132

Abstract

An intermediate connection member which electrically connects an output terminal of a bus bar installed inside a motor case with an external connection terminal located in a distance from the output terminal. The intermediate connection member preferably includes both of a terminal member which is connected to the output terminal and a connecting line which is connected to the external connection terminal. The connecting line is defined by binding a plurality of wire rods together.

Claims

1. An intermediate connection member which is arranged to electrically connect an output terminal of a bus bar connected to a plurality of coils installed inside a motor case with a external connection terminal located at a distance from the output terminal, comprising:

a terminal member arranged to be connected to the output terminal; and

a connecting line fixed to the terminal member and arranged to be connected to the external connection terminal;

wherein

the connecting line is defined by binding a plurality of wire rods together.

2. The intermediate connection member according to claim 1, wherein the connecting line includes a gross sectional area that is substantially larger than a gross sectional area of a conductive wire defining the coil.

3. The intermediate connection member according to claim 2, wherein

the coils are arranged on a stator in a cylindrical shape;

the bus bar is installed on one axial end of the stator; and

the output terminal is arranged to extend in parallel or substantially in parallel with a central line of the stator;

the terminal member comprising;

a first connection portion including a compressing portion in which one end of the connecting line is compressed; and

a second connection portion integrally provided with the first connection portion as a single monolithic member, and including a welding portion arranged to be welded with the output terminal; and

the welding portion including a terminal inserting portion in which the output terminal is arranged to be inserted.

4. The intermediate connection member according to claim 3,

wherein the terminal member and the output terminal are made of the same metal material.

5. The intermediate connection member according to claim 4,

wherein the terminal member is made with an aluminum-based metal;

and

a surface of the terminal inserting portion is tin plated.

6. The intermediate connection member according to claim 5,

wherein the connecting line is made of an annealed copper stranded wire.

7. A stator comprising the intermediate connection member according to claim 6.

8. A motor comprising the stator of claim 7.