WIRE-CONNECTION STRUCTURE OF MOTOR

• US 20070052307A1
• Filed: 08/29/2006
• Published: 03/08/2007
• Est. Priority Date: 09/02/2005
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Fukuda, Kenji, Watanabe, Akihiro, YOSHIDA, Hideyuki
• Granted Patent: US 7,545,063 B2
• Time in Patent Office: Days
• US Class Current: 310/71
• 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

In a wire-connection structure of a motor, bus rings each formed by a bent wire material into a substantially annular shape and arranged along a stator includes: a plurality of large diameter portions and a plurality of small diameter portions extending alternately in a circumferential direction; and a plurality of link portions extending in a radial direction and connecting the adjacent large diameter portion and small diameter portion to each other. Windings of the coils are wire-connected to the link portions. Therefore, it is unnecessary to form the link portions of the bus rings into a U-shape or double-wire overlapping shape, thereby facilitating processing. Moreover, the width of the wire-connection portion in the circumferential direction does not exceed the thickness of a single wire material, thereby facilitating connection work by a crimping tool in a narrow space. Thus, the structure of a crimping portion for fixing by crimping the winding of the coil to the bus ring is simplified, and a space for inserting the crimping tool is secured to improve workability.

Claims

1. A wire-connection structure of a motor, comprising:

an annular stator including coils of a plurality of phases, the coils being arranged alternately in a circumferential direction;

bus rings of a plurality of phases, each of the bus rings being formed by a bent wire material into a substantially annular shape and arranged along the stator;

windings of the coils of the same phase being arranged at predetermined intervals and wire-connected to each other by the corresponding bus ring,

wherein the bus rings comprises;

a plurality of large diameter portions and a plurality of small diameter portions extending alternately in the circumferential direction; and

a plurality of link portions extending in a radial direction and connecting the adjacent large diameter portion and small diameter portion to each other, and

wherein the windings of the coils are wire-connected to the link portions.

2. The wire-connection structure of a motor according to claim 1, wherein the bus rings of the plurality of phases are arranged so as to be laminated with predetermined gaps in an axis direction of the stator.

3. The wire-connection structure of a motor according to claim 1, wherein the bus rings of the plurality of phases have the same shape and are arranged with phases displaced in the circumferential direction.

4. The wire-connection structure of a motor according to claim 1, wherein the bus rings are supported on elastic support members fixed to insulators of the coils.

5. The wire-connection structure of a motor according to claim 2, wherein the bus rings are supported on elastic support members fixed to insulators of the coils.

6. The wire-connection structure of a motor according to claim 3, wherein the bus rings are supported on elastic support members fixed to insulators of the coils.