Brush Plate
AssigneeJohnson Electric S.A.
InventorMing Yau CHUNG
Life of this patent
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Abstract
A brush plate has an insulating substrate, at least one pair of brushes mounted on the insulating substrate, and a conductor for supplying power to the brushes. The conductor includes at least one overheat protection portion having a smaller cross sectional area than adjacent portions of the conductor. By integrally forming the overheat protection portions on the conductors, no extra overheat protection device is required. Preferably, the overheat protection portion has a bent structure. The bent structure may be U-shape, Z-shape, M-shape or wave-shape. The bent structure can increase the anti-shock capability of the conductor and shorten the response time of the overheat protection portion.
Claims11
A brush plate for a brush type electric motor, comprising:
- an insulating substrate;
- at least one pair of brushes mounted on the insulating substrate, and
- a conductor fixed with the insulating substrate for supplying power to the brushes,
- wherein the conductor comprises a overheat protection portion having a smaller cross sectional area than adjacent portions of the conductor.
Dependencies are inferred from the claim text.