ELECTRICAL COLLECTING AND DISTRIBUTING RING

• US 20140319944A1
• Filed: 04/24/2014
• Published: 10/30/2014
• Est. Priority Date: 04/25/2013
• Status: Active Grant

• Current Assignee: Hitachi Metals (Thailand) Ltd.
• Original Assignee: Hitachi Metals (Thailand) Ltd.
• Inventors: TOMITA, Kazuhiko, EGAMI, Kenichi
• Granted Patent: US 9,293,960 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 3/12 arranged in slots
• CPC Class Codes: H02K 3/28 Layout of windings or of connections between windings windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32
• CPC Class Codes: H02K 3/522 for generally annular cores with salient poles

Abstract

An electrical collecting and distributing ring is composed of an annular bus ring including a plurality of terminals and a plurality of circular arc portions therebetween, respectively, and a holding member, which at least partially molds the bus ring. The plurality of terminals include respective one pair of extended portions formed with clamping portions, respectively, extending through the holding member and in a radial direction of the circular arc portions to clamp an end therebetween of a winding. The respective one pair of extended portions of the terminals include thin portions, respectively, formed thin in thickness in a circumferential direction of the circular arc portions, at least partially between the holding member and the clamping portions, respectively. The terminals and the ends of the winding are connected together by caulking the clamping portions with the ends of the winding clamped between the clamping portions, respectively.

Claims

1. An electrical collecting and distributing ring, comprising:

an annular bus ring for performing electrical collection and distribution to a polyphase winding wound around a plurality of annularly arranged teeth, the bus ring including a plurality of terminals and a plurality of circular arc portions therebetween, respectively, formed by bending a linear electrical conducting member, so that the plurality of terminals are connected to ends, respectively, of the winding, while being connected together in a circumferential direction by the plurality of circular arc portions therebetween, respectively; and

a holding member, which at least partially molds the bus ring,

wherein the plurality of terminals include respective one pair of extended portions formed with clamping portions, respectively, extending through the holding member and in a radial direction of the circular arc portions to clamp the end therebetween of the winding,

wherein the respective one pair of extended portions of the terminals include thin portions, respectively, formed thin in thickness in the circumferential direction of the circular arc portions, at least partially between the holding member and the clamping portions, respectively,

wherein the terminals and the ends of the winding are connected together by caulking the clamping portions with the ends of the winding clamped between the clamping portions, respectively.

2. The electrical collecting and distributing ring according to claim 1, wherein the thin portions are formed by flattening the electrical conducting member in the circumferential direction of the circular arc portions.

3. The electrical collecting and distributing ring according to claim 1, wherein the respective one pair of extended portions of the terminals and the end therebetween of the winding are connected together by heat caulking.

4. The electrical collecting and distributing ring according to claim 2, wherein the respective one pair of extended portions of the terminals and the end therebetween of the winding are connected together by heat caulking.