DISCONNECTABLE PULLEY DEVICE, ALTERNATOR COMPRISING SUCH A DEVICE AND INTERNAL COMBUSTION ENGINE EQUIPPED WITH SUCH A DEVICE OR SUCH AN ALTERNATOR

摘要

This disconnectable pulley device comprises a central member, a pulley mounted around the central member, a free wheel itself comprising several cams mounted between a first slippage path, made on an external radial surface of the central member or of an element secured to this member, and a second slippage path made on an internal radial surface of the pulley or of an element secured to the pulley, the free wheel ensuring a unidirectional clutch between the pulley and the central member. At least one slippage path, from among the first and second slippage path, and/or a portion of the cams intended to interact with one of the slippage paths comprises a tungsten disulfide layer.

主权项

1. A disconnectable pulley device comprising:
a central member; a pulley mounted around the central member; and a free wheel itself comprising several cams mounted between a first slippage path, made on an external radial surface of the central member or of an element secured to this member, and a second slippage path, made on an internal radial surface of the pulley or of an element secured to the pulley, the free wheel ensuring a unidirectional clutch between the pulley and the central member, wherein that at least one slippage path, from among the first and second slippage paths of the free wheel, and/or a portion of the cams intended to interact with either one of the first and second slippage paths of the free wheel comprises a tungsten disulfide layer.