Carbon brush with disconnection apparatus
AssigneeRobert Bosch GmbH
InventorManfred Lutz
Life of this patent
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Abstract
A carbon brush with a disconnection apparatus in a cavity in a brush body includes a disconnection body and a prestressed compression-spring body. The disconnection body consists of an electrically insulating material, and the prestressed compression-spring body is configured to act resiliently on the disconnection body. The compression-spring body is formed together with the disconnection body as a short component with a short axial length. In one embodiment, the compression-spring body is in the form of a spring with a plurality of spring turns which, at least in the prestressed, compressed state, are at least partially located one inside the other, shortening them.
Claims11
A carbon brush with disconnection apparatus, comprising:
- a brush body defining a cavity;
- a disconnection body including electrically insulating material;
- and
- a prestressed compression-spring body configured to act resiliently on the disconnection body, the compression-spring body configured to move between a compressed state and an uncompressed state,
- wherein the compression-spring body is formed together with the disconnection body as a short component with a short axial length,
- wherein the disconnection body and the compression-spring body are received entirely within the cavity in the brush body when the compression-spring body is in the compressed state,
- wherein an open end of the cavity has a recess with a larger diameter than a diameter of the cavity,
- wherein a separating disk on which the compression-spring body is supported is accommodated in the recess, and
- wherein a coil of the compression-spring body is accommodated in the recess between the separating disk and the brush body.
A carbon brush with disconnection apparatus, comprising:
- a brush body defining a cavity, the cavity having a diameter and an open end;
- a disconnection body including electrically insulating material;
- and
- a prestressed compression-spring body configured to act resiliently on the disconnection body, wherein:
- a recess is formed at the open end of the cavity, the recess having a diameter that is larger than the diameter of the cavity, and
- a separating disk and adjoining plug configured to support the compression-spring body are accommodated in the recess, and
- a coil of the compression-spring body is accommodated in the recess between the separating disk and the brush body.
Dependencies are inferred from the claim text.