The invention concerns an electric hand tool device, in particular, a percussion drill or a drill hammer, comprising a spindle (10) that can be driven by a drive motor and cooperates at one end (12) with a tool support, and a percussion means (24) for axially moving the spindle (10) in a percussion position, wherein an adjusting means (42) is provided for adjusting the spindle (10) between the percussion position and a rotary position, the adjusting means (42) comprising a switch ring (44) which is disposed on the spindle (10) and has cam configurations (46,48) on both end faces thereof, wherein one of the cam configurations (46) can engage in a corresponding cam configuration (52) which is fixed to the housing through turning the switch ring (44), and the second cam configuration (48) can be brought into engagement with a corresponding cam configuration (60) of a pressure piece (54) which can be axially moved on the spindle (10), in order to adjust the percussion means (42) to a percussion position.
Description
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 shows a section of an inventive electric hand tool device in the rotary position; and
FIG. 2 shows the device in accordance with FIG. 1 in the percussion position.
Claims
1. An electric hand tool device, a percussion drill, or a drill hammer, the device comprising:
a housing;a drive motor disposed in said housing;a spindle cooperating with said drive motor and having an end for engagement with a tool support;percussion means cooperating with said spindle for axially displacing said spindle in a percussion mode;a first cam fixed to said housing;a pressure member having a second cam, said pressure member structured for axial displacement along said spindle;anda switch ring disposed on said spindle, said switch ring having a third cam on a first end face thereof and a fourth cam on a second end face thereof, said switch ring being structured for turning to bring said third cam into engagement with said first cam and said fourth cam into engagement with said second cam, wherein said switch ring is turned from a rotary position into a percussion position.
2. The electric hand tool device of claim 1, further comprising a spring cooperating with said pressure member to urge said pressure member away from said switch ring.
3. The electric hand tool device of claim 1, wherein said spindle has an axial bearing supporting said pressure member at a side thereof opposite to said second cam.
4. The electric hand tool device of claim 1, wherein said pressure member is guided in a cam such that it cannot be rotated relative to said housing.
5. The electric hand tool device of claim 1, further comprising a slide switch for rotating said switch ring.
Patent Application
20070215369
