F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 35/10 (2006.01) B25B 21/00 (2006.01) B25B 23/14 (2006.01) B25F 5/00 (2006.01) B25F 5/02 (2006.01) F16H 1/28 (2006.01) F16H 3/66 (2006.01)
Patent
CA 2435251
A clutch arrangement for use in a power tool having a multi-speed transmission assembly. The clutch arrangement includes a clutch member and a follower member. The clutch member is coupled to a member of the transmission assembly that is proximate the torsional input of the transmission assembly and which must be in a non-rotating position to permit the transmission assembly to perform a torque multiplication operation. The follower member is biased into engagement with the clutch member to inhibit relative rotation therebetween. As the clutch member and the transmission member are coupled to one another, the transmission assembly is able to perform a torque multiplication operation. When, however, the torsion that is exerted onto the clutch member is sufficient to overcome the fractional engagement between the follower and clutch members, the clutch member, and the transmission member, rotate, thereby inhibiting the capability of the transmission to continue to perform the torque multiplication operation.
L'invention concerne un dispositif d'embrayage qu'on utilise dans un outil à commande mécanique équipé d'un organe de transmission à plusieurs vitesses. Le dispositif d'embrayage comprend un élément d'embrayage et un élément mobile. L'élément d'embrayage est couplé à un élément de l'organe de transmission situé à proximité de l'entrée de torsion de l'organe de transmission, et doit occuper une position non rotative pour permettre à l'organe de transmission d'effectuer une opération de multiplication du couple. L'élément mobile est incliné de façon à entrer en prise avec l'élément d'embrayage afin d'empêcher une rotation relative entre eux. Comme l'élément d'embrayage et l'élément de transmission sont couplés l'un à l'autre, l'organe de transmission peut effectuer une opération de multiplication du couple. Lorsque, toutefois, la torsion exercée sur l'élément d'embrayage est suffisante pour vaincre la prise partielle entre l'élément mobile et l'élément d'embrayage, l'élément d'embrayage et l'élément de transmission se mettent en rotation entravant ainsi la capacité de l'organe de transmission de continuer à effectuer l'opération de multiplication du couple.
Milbourne Rodney
Potter Christine
Rescigno Gerald
Zhang Qiang
Black & Decker Inc.
Blake Cassels & Graydon Llp
LandOfFree
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