Patent ID: 11964376
Assignee: TECHTRONIC CORDLESS GP
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A multi-function handheld electric tool comprising:
a motor housing and a motor located inside the housing, the motor having a motor output to which a speed reduction transmission is mounted to be rotatable therewith,
a settable clutch coupled with the speed reduction transmission to transmit torque from the speed reduction transmission to an output spindle coupled with a chuck,
a transmission housing coupled to the motor housing and having a first housing portion coupled to the motor housing, and a second housing portion extending from the first portion towards the chuck, at least a part of the speed reduction transmission and the clutch being located within the first portion of the transmission housing,
a setting collar which is rotatably fit over the second housing portion of the transmission housing and rotatable between a plurality of predetermined angular positions of which at least one corresponds to a non-torque limited first operation mode of the tool and the remaining positions correspond to different torque output levels of a torque limited second operation mode of the tool,
the settable clutch comprising a clutch face having a plurality of clutch ramps extend a fixed axial distance from a linear portion of the clutch face, a clutch washer and a clutch sleeve axially and rotatably located about the second portion of the transmission housing and between the setting collar and the second portion of the transmission housing, the clutch sleeve being located a variable axial distance from the clutch washer, a clutch spring biased between the clutch sleeve and the clutch washer, and a follower located between the clutch face and the clutch washer, wherein
the clutch sleeve is rotationally fixed with the setting collar and rotatable therewith to move axially on the second portion of the transmission housing such that the variable axial distance is dependent on a respective one of the plurality of predetermined angular positions of setting collar, and wherein in the at least one angular position of the setting collar that corresponds to the non-torque limited first operation mode of the tool the fixed axial distance is greater than the variable axial distance, and in the remaining predetermined angular positions of the setting collar the variable axial distance is greater than the fixed axial distance.