Terminal for rotating armature

• US 7,374,462 B2
• Filed: 03/13/2007
• Issued: 05/20/2008
• Est. Priority Date: 07/21/2006
• Status: Expired due to Fees

• Current Assignee: Showa Corporation (Hitachi, Ltd.)
• Original Assignee: Showa Corporation (Hitachi, Ltd.)
• Inventors: Kobayashi, Takayuki
• Primary Examiner(s): Vu; Hien D.
• Application Number:
  US11/685,743
• Publication Number:
  US 20080018193A1
• Time in Patent Office: 434 Days
• Field of Search: 439/723, 439/724, 439/212, 439/721, 439/621, 310/71, 310/179
• US Class Current: 439/723
• 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

In a terminal for a rotating armature, each of bus rings (A-C) is structured such that each of ring main bodies is formed as a plate shape included in a plane orthogonal to an axial direction thereof, and has a plate-shaped piece folded in a direction along the axial direction from one end in a peripheral direction of each of the ring main bodies, the plate-shaped piece of each of the bus rings (A-C) protrudes from a resin portion, and a leading end side portion of the plate-shaped piece is formed as a weld connection portion to each of connection terminals of a coupler.

Claims

1. A terminal for a rotating armature comprising:

ring main bodies of bus rings (A-C) respectively connected to U-phase, V-phase and W-phase coils of a stator, and a neutral bus ring (D) connected to common terminals of the respective coils, being arranged in parallel in an axial direction thereof to be resin molded in a resin portion,

a connection portion of the bus rings (A-C) welded to the respective U-phase, V-phase and W-phase connection terminals of a coupler, being protruded from the resin portion,

each of the bus rings (A-C) formed as a plate shape in which a ring main body of each bus ring is included in a plane orthogonal to the axial direction,

a plate-shaped piece bent in a direction along the axial direction from one end in a peripheral direction of each of the ring main bodies, and

the plate-shaped piece of each of the bus rings (A-C) protruding from the resin portion, and

a leading end side portion of the plate-shaped piece being formed as a connection portion to each of the connection terminals of the coupler,

wherein the plate-shaped piece is formed by being folded in a straight shape in a direction along the axial direction from one edge end in a peripheral direction of each of the ring main bodies, and the plate-shaped piece protrudes toward an outer side in the axial direction from the resin portion.

2. A terminal for a rotating armature as claimed in claim 1, wherein each of the connection terminals of the coupler is formed as a band-plate shaped plate-shaped piece, and is structured such that a slit having a fixed length is formed in a bifurcated leading end fork portion formed in the leading end portion side of the plate-shaped piece.

3. A terminal for a rotating armature as claimed in claim 1, wherein in the plate-shaped piece of each of the bus rings (A-C), a root side portion with respect to the resin portion of the plate-shaped piece is formed as a heat radiation portion.

4. A terminal for a rotating armature as claimed in claim 3, wherein the heat radiation portion is positioned in an outer side of the resin portion and is exposed to the outer side of the resin portion, between the ring main body molded to resin portion and the connection portion.

5. A terminal for a rotating armature as claimed in claim 1, wherein in the leading end side portion of each of the bus rings (A-C) a leading end lower portion positioned close to a center in a radial direction of each of the ring main bodies is formed as a connection portion to each of the connection terminals of the coupler, and a leading end upper portion positioned close to an outer side in the radial direction of each of the ring main bodies is formed as a positioning portion for each of the connection terminals of the coupler.

6. A terminal for a rotating armature as claimed in claim 5, wherein the connection portion and the positioning portion are flush with the heat radiation portion.

7. A terminal for a rotating armature as claimed in claim 5, wherein each of the connection terminals of the coupler is formed as a band-plate shaped plate-shaped piece, and is structured such that a slit having, a fixed length is formed in a bifurcated leading end fork portion formed in the leading end portion side of the plate-shaped piece.

8. A terminal for a rotating armature as claimed in claim 3, wherein in the leading end side portion of each of the bus rings (A-C), a leading end lower portion positioned close to a center in a radial direction of each of the ring main bodies is formed as a connection portion to each of the connection terminals of the coupler, and a leading end upper portion positioned close to an outer side in the radial direction of each of the ring main bodies is formed as a positioning portion for each of the connection terminals of the coupler.

9. A terminal for a rotating armature as claimed in claim 8, wherein the connection portion and the positioning portion are flush with the heat radiation portion.

10. A terminal for a rotating armature as claimed in claim 5, wherein a positioning groove open in a taper shape is provided in an end surface facing to the coupler corresponding to an upper side of the positioning portion.

11. A terminal for a rotating armature as claimed in claim 10, wherein the connection portion and the positioning portion are flush with the heat radiation portion.

12. A terminal for a rotating armature as claimed in claim 10, wherein each of the connection terminals of the coupler is formed as a band-plate shaped plate-shaped piece, and is structured such that a slit having a fixed length is formed in a bifurcated leading end fork portion formed in the leading end portion side of the plate-shaped piece.

13. A terminal for a rotating armature as claimed in claim 8, wherein a positioning groove open in a taper shape is provided in an end surface facing to the coupler corresponding to an upper side of the positioning portion.

14. A terminal for a rotating armature as claimed in claim 13, wherein the connection portion and the positioning portion are flush with the heat radiation portion.

15. A terminal for a rotating armature as claimed in claim 13, wherein each of the connection terminals of the coupler is formed as a band-plate shaped plate-shaped piece, and is structured such that a slit having a fixed length is formed in a bifurcated leading end fork portion formed in the leading end portion side of the plate-shaped piece.