Collecting and distributing ring for rotary electric machine stator

• US 20040251752A1
• Filed: 03/01/2004
• Published: 12/16/2004
• Est. Priority Date: 09/03/2001
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Fukuda, Kenji, Shinzaki, Satoru, Horie, Tatsuro, Okamura, Akihiro
• Granted Patent: US 7,193,345 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

Abstract

A collection-distribution ring comprises three busbars, each having a circular ring shape, which are integrally connected together with prescribed distances therebetween by an insulating resin. Coil connection terminals project inwardly in a radial direction and are alternately arranged in relation to the three busbars. External terminals project outwardly in the radial direction and are arranged to adjoin together at the prescribed position. These terminals are all exposed from surfaces of the insulating resin. A stator comprises the prescribed number of stator units that are arranged in a circumferential direction and are assembled together with the collection-distribution ring. Each stator unit comprises a core unit realizing magnetic teeth, an insulating member, and a coil. An outer terminal member electrically connects a first end of the coil and the coil connection terminal, and an inner terminal member provides electrical connections between second ends of the adjacent coils.

Claims

1-9. -9. (Cancelled)

10. A stator for a rotating electrical machine, comprising:

a stator core (13) having a plurality of magnetic teeth (15) that are arranged in a circumferential direction with prescribed distances therebetween and that projects in a radial direction; and

a plurality of coils (12) that are wound about the magnetic teeth of the stator core via insulating members (11),

wherein each of the coils is extended to provide a terminal end (12b, 12c, 12d) towards one terminal portion of a stator core unit (9), and the terminal end of each coil is connected with a coil connection terminal (2b, 3b, 4b) of a conduction member (2, 3, 4),

and wherein the coils wound about the magnetic teeth are respectively extended to provide midpoint terminal portions (12b) and are connected with coils of other adjoining stator unit so that the adjoining coils are mutually connected together therewith.

11. The stator for a rotating electrical machine according to claim 10, wherein the insulating members are respectively equipped with terminal members (17) that provide electrical connections between intermediate portions (12e) and tip end portions (12d) of the midpoint terminal portions of the adjoining coils.

12. The stator for a rotating electrical machine according to claim 11, wherein the terminal members have guide portions (22c) for guiding the terminal end portions of the adjoining coils.

13. A stator for a rotating electrical machine comprising:

a collection-distribution ring (1) for the rotating electrical machine that performs collection and distribution of electricity between an external device and coils (12) wound about a plurality of magnetic teeth (15), which are arranged in a circumferential direction of a stator (6) having a circular ring shape with prescribed distances therebetween,

wherein a plurality of conduction members (2, 3, 4) are integrally connected with prescribed distances therebetween by an insulating resin (5) before being assembled with the stator, thus forming an integral conduction unit,

and wherein each of the conduction members of the integral conduction unit comprises a plurality of coil connection terminals (2b, 3b, 4b) and an external terminal (2c, 3c, 4c), all of which are exposed from surfaces of the insulating resin enclosing the conduction members.

14. The stator for a rotating electrical machine according to claim 13, wherein each of the conduction members is formed by bending a conductive steel sheet having a band-sheet like shape into roughly a cylindrical shape in such a way that the plurality of conduction members have different radiuses in curvature respectively.

15. The stator for a rotating electrical machine according to claim 13 or 14, wherein the plurality of coil connection terminals are exposed from the insulating resin and are alternately arranged in the circumferential direction of the stator with prescribed pitches therebetween in correspondence with pitches for arranging the magnetic teeth.

16. The stator for a rotating electrical machine, comprising:

a collection-distribution ring (1) comprising a plurality of busbars (2, 3, 4), each having a circular ring shape, that are integrally connected together with prescribed distances therebetween by an insulating resin (5), in which coil connection terminals (2b, 3b, 4b) project inwardly in a radial direction and are alternately arranged in relation to the plurality of busbars, and external terminals (2c, 3c, 4c) project outwardly in the radial direction from the plurality of busbars respectively and are arranged to adjoin together, so that the coil connection terminals and the external terminals are all exposed from surfaces of the insulating resin,

wherein a plurality of stator units (9) that are arranged in a circumferential direction and are assembled together with the collection-distribution ring,

wherein each stator unit comprises a core unit (10) of stacked magnetic metal sheets realizing magnetic teeth (15), an insulating member (11), and a coil (12), which is wound about the core unit via the insulating member,

and wherein each stator unit provides an outer terminal member (16) that electrically connect a first end (12a) of the coil wound about the magnetic teeth and the coil connection terminal projecting inwardly from the busbar, and an inner terminal member (17) that electrically connects a second end (12b) of the coil wound about the magnetic teeth and a second end of other adjoining coil wound about other adjoining magnetic teeth together.

17. The stator for a rotating electrical machine according to claim 16, wherein each stator unit provides an inner terminal member (22) that electrically connects a second end (12b) of the coil wound about the magnetic teeth and a second end of the other adjoining coil that is wound about the other adjoining magnetic teeth and is guided by a guide portion (22c).