Operating mode switch for setting at least one operating mode in a hand-held power tool

US20070163793A1Inactive Publication Date: 2007-07-19ROBERT BOSCH GMBH

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[0012] With the hand-held power tool shown in an exploded view, in sections, in FIG. 1, it is possible to switch to three different operating modes, i.e., the “impact drilling on / off” mode, the “drill” mode, and the “screw” mode, using an operating mode switch composed of two adjustment rings. In the “screw” mode, it is possible to preselect various starting torques. If this torque is exceeded, a safety clutch is activated, and the screwing tool cannot be driven.

[0013] The section of the hand-held power tool shown in FIG. 1 shows a guide sleeve 11 which is fixedly connected with the front region of a machine housing (not shown here) which accommodates an electric motor and a gearbox. A tool spindle (not shown here) is rotatably supported in guide sleeve 11, and operating mode switch 10 is located on guide sleeve 11. Operating mode switch 10 includes a setting ring for the “drill” and “screw” modes—and only one threaded ring 13 is shown—and a setting ring 12 with which the “impact d...

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Abstract

An operating mode switch for setting at least one operating mode in a hand-held power tool, comprising an adjustment ring rotatable manually around its axis and movable into at least one rotational position which activates an operating mode, and a locking device controlled by the adjustment ring and engaging in the adjustment ring, the locking device being configured such that in the at least one rotational position of the adjustment ring it automatically falls into a locking position which locks the adjustment ring in position, while the engagement ring is engageable from the at least one rotational position by manually rotating the adjustment ring.

Description

CROSS-REFERENCE TO A RELATED APPLICATION [0001] The invention described and claimed hereinbelow is also described in German Patent Application DE 102005059182.5 filed on Dec. 12, 2005. This German Patent Application, whose subject matter is incorporated here by reference, provides the basis for a claim of priority of invention under 35 U.S.C. 119(a)-(d). BACKGROUND OF THE INVENTION [0002] The present invention is based on an operating mode switch for setting at least one operating mode in a hand-held power tool, in particular for selectively turning the “impact drilling” mode on or off in an impact drill. [0003] With a known impact drill with an operating mode switch for selecting several operating modes (DE 100 06 641 A1), the operating mode switch includes two adjustment or switching rings which are located next to each other on the machine housing and are designed such that one switching ring, in two consecutive setting positions, selects the “impact drilling on / off” mode, and th...

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Application Information

Patent Timeline

19 Jul 2007

Publication

US20070163793A1

IPC: E02D7/02

CPC: B25D16/006; H01H9/20; B25D2216/0038; B25D2216/0023

Inventors: AEBERHARD, BRUNO; BUEHLMANN, FELIX