Cantilever dampened drive assembly for windowlift motors
AssigneeSiemens VDO Automotive Corporation
InventorLuis Acosta
Life of this patent
Estimating the term…
Abstract
A drive assembly 21 is provided for an electric motor 10 having a rotatable shaft 12 including a worm 14. The drive assembly includes an output gear 16 constructed and arranged to mesh with the worm. The output gear includes a plurality of arms 22 extending generally from a periphery of the output gear radially towards a center of the output gear. A driver 18 is operatively associated with the output gear to rotate therewith. The driver includes a plurality of cams 24 near a periphery thereof. The cams are operatively associated with the arms so that when the driver stops rotating while the output gear continues to rotate, each cam engages an associated arm to absorb kinetic energy of the output gear while the motor stalls.
Claims20
A drive assembly for an electric motor having a rotatable shaft including a worm, the drive assembly comprising:
- an output gear constructed and arranged to mesh with the worm, the output gear including a plurality of arms extending generally from a periphery of the output gear radially towards a center of the output gear, and
- a driver operatively associated with the output gear to rotate therewith, the driver including a plurality of cams near a periphery thereof, the cams being operatively associated with the arms so that when the driver stops rotating while the output gear continues to rotate, each cam engages an associated arm to absorb kinetic energy of the output gear while the motor stalls.
A drive assembly for an electric motor having a rotatable shaft including a worm, the drive assembly comprising:
- an output gear constructed and arranged to mesh with the worm, the output gear including means for engagement, and
- a driver operatively associated with the output gear to rotate therewith, the driver including means for contacting, operatively associated with the means for engagement, so that when the driver stops rotating while the output gear continues to rotate, the means for contacting engages the means for engagement to absorb kinetic energy of the output gear while the motor stalls.
An electric motor including:
- a rotatable shaft including a worm, and
- a drive assembly comprising:
- an output gear meshing with the worm, the output gear including a plurality of arms extending generally from a periphery of the output gear radially towards a center of the output gear, and
- a driver operatively associated with the output gear to rotate therewith, the driver including a plurality of cams near a periphery thereof, the cams being operatively associated with the arms so that when the driver stops rotating while the output gear continues to rotate, each cam engages an associated arm to absorb kinetic energy of the output gear while the motor stalls.
Dependencies are inferred from the claim text.