screwdriver with torque limiter

Abstract

The screw driver (10) has a torque limiting handle (20) and a shank (30) which is coaxially inserted opposite the handle that is rotatably coupled and is torsionally connected through the torque limiter. The relative rotation between the shaft and the handle represents the switching cycle by the defined angle. A counting unit is provided for counting the cycles. A Hall sensor (40) is rotatably connected to the handle and the magnetic element (52) is rotationally fixed to the shaft.

Description

technical field [0001] The invention relates to a screwdriver with a torque limiter. Background technique [0002] Screwdrivers with a handle comprising a torque limiter and a shaft inserted coaxially into the handle are known, the shaft being rotatable relative to the handle and torque-locked (drehmomentschlüssig) with the handle via the torque limiter A coupling wherein each relative rotation between the lever and the handle by at least one defined angle represents a switching cycle. A screwdriver with a torque limiter is advantageous in order to be able to tighten the screw with a predetermined force which, on the one hand, guarantees a secure hold of the screw connection and, on the other hand, excludes overstressing of the thread. Thus, the lever can be turned within the handle in order to be able to disengage the torque limiting mechanism. When the torque transmitted from the handle to the rod through the coupling exceeds the limit torque, the torque limiting mechani...

AI Technical Summary

Problems solved by technology

Here, the torque limiting mechanism suffers from wear

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