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Manual machine tool

A technology of hand tools and control curves, applied in the direction of motor tools, manufacturing tools, wrenches, etc., which can solve problems such as wrong implementation of screwing

Active Publication Date: 2021-05-25
C.& E.泛音有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the decoupling coupling is now tripped several times, this is often annoying for the user, since if the user detects a snap several times, then it can be concluded that the screwing has been performed incorrectly

Method used

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  • Manual machine tool
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] figure 1 An electric hand tool 1 is shown in a perspective view, which in the exemplary embodiment shown is designed with a high-precision industrial battery-operated screwdriver 2, more precisely as a pole-angle screwdriver (Stabwinkelschrauber) 3, which is usually used in Industrial series screwing. The angled screwdriver 3 here has a drive 5 accommodated in a housing 4 , the direction of rotation of which can be adjusted by means of an adjusting switch 6 in order to offer the user the possibility of unscrewing again. In the embodiment shown, the electrical energy required for the voltage supply of the drive 5 is provided by an accumulator 7 , which is releasably fastened to the pole-angle screwdriver 3 . At the end pointing away from the accumulator 7 , a receptacle 8 is formed on the pole-angle screwdriver 3 , to which various sets or insertion tools can be connected. In the exemplary embodiment shown, this is exemplarily a corner head (Winkelkopf) 9 .

[0034] f...

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PUM

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Abstract

The invention relates to an electric portable power tool, having a housing, a shaft, a control cam, an electric drive accommodated in the housing to drive the drive shaft, and an output unit that is positively connected with the drive via a mechanical shut-off clutch to transfer torque from the drive to an insertion tool connected with the output unit. The mechanical shut-off clutch comprises a control ring that is axially mounted against the force of the return spring and at least one switch element that is run on the control cam. The control cam is delimited at one end by a first switching contour for providing a release torque of the shut-off clutch and by a boundary contour at another end. The control cam is associated with a second switching contour for providing a pre-torque which is less than the release torque.

Description

technical field [0001] The invention relates to an electric hand tool (Handwerkzeugmaschine), in particular a battery-driven screwdriver (Akkuschrauber), with a preferably electric drive accommodated in a housing, which drives a drive shaft; The mechanical disconnection coupling (Abschaltkupplung) is non-positively connected to the driver in order to transmit the torque from the driver to the insertion tool (Einsatzwerkzeug) connected to the driven unit, wherein the mechanical disconnection coupling includes axially resisting Switching ring (Schaltring) supported by the force of the return spring and at least one switching element guided on the control curve, wherein the control curve passes through the first switching contour (Schaltkontur) for providing the activation torque of the disconnecting coupling at one end and the other One end is limited by a limiting profile. Background technique [0002] For screwdrivers, especially for battery-operated screwdrivers (which are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B23/147
CPCB25B23/147B25B23/141B25B21/00B25F5/001
Inventor M·米克F·瓦尔茨
Owner C.& E.泛音有限公司
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