Ceramic core commutator for a rotary electric machine
First Claim
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1. A commutator for a rotary electric machine, the commutator comprising:
- a ceramic support having an outside surface constituting a first conical surface of revolution about an axis; and
metal segments disposed side-by-side parallel to said axis around the outside surface of the support in such a manner that any two adjacent segments are separated by a space, each segment being fixed to the support by a metal layer connecting a fixing surface of the segment to the outside surface of the support, the fixing surfaces of the segments being disposed on a second conical surface of revolution around said axis, said second conical surface being substantially parallel to said first conical surface;
characterized in that the support comprises a plurality of ceramic parts (1,
2) disposed along said axis (4), with any two adjacent parts (1,
2) being separated from each other by an axial gap (8).
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Abstract
A commutator for a rotary electric machine, and a method of manufacturing said commutator.
The commutator comprises a ceramic support and metal segments, the support constituted by a plurality of parts (1, 2) which are mutually separated by respective axial gaps (8) and bonded to the ceramic by a copper oxide eutectic surface.
The invention is applicable to electric machines including commutators.
15 Citations
5 Claims
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1. A commutator for a rotary electric machine, the commutator comprising:
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a ceramic support having an outside surface constituting a first conical surface of revolution about an axis; and metal segments disposed side-by-side parallel to said axis around the outside surface of the support in such a manner that any two adjacent segments are separated by a space, each segment being fixed to the support by a metal layer connecting a fixing surface of the segment to the outside surface of the support, the fixing surfaces of the segments being disposed on a second conical surface of revolution around said axis, said second conical surface being substantially parallel to said first conical surface; characterized in that the support comprises a plurality of ceramic parts (1,
2) disposed along said axis (4), with any two adjacent parts (1,
2) being separated from each other by an axial gap (8). - View Dependent Claims (2, 3, 4, 5)
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Specification