Shaft lock
AssigneeSkf Marine GmbH
InventorDirk Bargende
Life of this patent
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Abstract
A shaft lock includes a radially inner rotor part that is coaxially connected to a shaft having a rotational axis and a fixed stator part that at least partially encloses the rotor part. In a locking state and in a holding state, an interference-fit connection between the rotor part and the stator part is produced by a plurality of locking bodies, and the interference-fit connection is cancelable by a transition into an unlocking state. To produce the interference-fit connection, each of the plurality of locking bodies are partially engageable in an interference-fit manner in a respective receiving geometry of the rotor part by rotation of a substantially hollow-cylindrical locking ring that coaxially encloses the stator part in a partially radially outer-lying manner.
Claims14
A shaft lock including a radially inner-lying rotor part that is centrally connected to a shaft having a rotational axis, wherein the shaft and the radially inner-lying rotor part are at least partially coaxially enclosed by a fixed and radially outer-lying stator part, wherein in a locking state and in a holding state, an interference-fit connection between the radially inner-lying rotor part and the fixed and radially outer-lying stator part is produced by a plurality of locking bodies, and the interference-fit connection is cancelable by a transition into an unlocking state, and wherein to produce or cancel the interference-fit connection, using at least one actuating member, each of the plurality of locking bodies are partially engageable in an interference-fit manner in a respective receiving geometry of the radially inner-lying rotor part, and wherein the at least one actuating member is configured as a substantially hollow-cylindrical locking ring that coaxially encloses the fixed and radially inner-lying stator part in a partially radially outer-lying manner.
A shaft lock comprising:
- a radially inner-lying rotor configured to be mounted coaxially to a shaft having a rotational axis, the rotor including a plurality of circumferentially spaced receiving geometries;
- a stator mounted around the rotor, the stator including a radially inner portion having a plurality of radial through openings alignable with the plurality of receiving openings;
- a plurality of locking bodies, each of the plurality of locking bodies being associated with a respective one of the plurality of receiving geometries, and
- a locking ring surrounding the stator and having a plurality of receiving pockets, each of the receiving pockets including a bottom, a permanent magnet at the bottom and a cam surface sloping away from the bottom,
- wherein the locking ring is rotatable from a first position to a second position relative to the stator,
- wherein in the first position, the plurality of locking bodies are held at the bottoms of the plurality of receiving pockets by the permanent magnets such that the plurality of locking bodies extend into the through openings of the stator and do not extend into the receiving geometries of the rotor, and
- wherein in the second position, portions of the plurality of locking bodies are held in the receiving geometries and in the through openings by the cam surface to form an interference fit between the rotor and the stator.
Dependencies are inferred from the claim text.