DE102004058579A1 - Hand tool - Google Patents

Abstract

A hand tool with a motor housed in a housing (12) and a tool (16) drivable by the latter with a handle (13, 14) and with a switch (17) for switching on and off, in particular for setting different speeds of rotation of the motor , is thereby safer, more convenient and intuitive to handle, that the switch (17) with a, in particular about its longitudinal axis (15), from a start to a final rotary position rotatable handle (13, 14) is gradually switched.

Description

The The present invention is based on a hand tool the preamble of claim 1.

It are known hand tool machines that use a slide switch are provided for switching on and off of the engine, depending on the actuated sliding path make the engine gradually slower or faster.

The Known slide switches are only via pressure actuation means Finger operated, so while the actuating finger for the slide switch not with all your strength to hold the handle of the hand tool to disposal stands.

Advantages of invention

The present invention having the features of claim 1 has the Advantage that a hand tool has been created, the engine or whose speed can be switched by means of rotation of the entire handle or is adjustable without one or more fingers from the handle be solved have to. Thus, the power tool is particularly safe and accurate too to lead and to keep while the engine speed is particularly sensitive adjustable.

Thereby, that the rotatable handle as a main handle and / or as an additional handle is used, the speed can either with one or the other Operating hand can be adjusted.

Thereby, that the auxiliary handle is rotatable about its longitudinal axis and with the switch is connected switchable, the speed as with be controlled a motorcycle throttle grip.

Thereby, that the rotatable handle is drehfestlegbar, he can also with high power input of the operating hand e.g. in difficult work positions can be handled and it can do this with a selectable, lockable speed to be worked.

Thereby, that the handle snaps over rotating adjustable is, can desired Speeds can be adjusted gradually and reproducibly.

Thereby, that the main handle and the auxiliary handle optional for switching the switch is used is the hand tool especially flexible and easy to operate in a wide variety of working positions usable.

Thereby, that main handle and auxiliary handle at the same time for switching The hand tool is also for unusual Working positions favorable used.

Thereby, that the main handle and / or auxiliary handle parallel or arranged transversely to the feed direction of the power tool and / or Optionally available, the hand tool is very flexible can be used and conveniently operated.

Thereby, that the handle over Vibration damping elements with the housing is a special ease of use for fatigue-free Working achievable.

Thereby, that the rotatable handle inside and / or at one, in particular axial, end of a backdrop-type actuator for moving a button or a button of a gradually switching switch that is dimensional to conventional, finished gradual switching switching units can be adjusted without another such switch units in the interior or at one end of the Handle can be arranged while the desired effect - on new Kind of use - unfold.

drawing

below the invention with reference to an embodiment with associated drawing explained in more detail.

It demonstrate

1 a side view of an oscillating grinder according to the invention

2 a first cross section of the rotary handle and

2 a second cross section of the rotary handle.

description of the embodiment

In the 1 shown side view of a hand tool 10 forms a hand swing grinder whose housing 12 in the upper part of an elongated, rearward, ie in the viewing direction left-facing, cylindrical, rotatable main handle 14 with a longitudinal axis 15 has and bottom with a sanding plate 16 for receiving a sanding sheet 18 is provided for surface grinding of a workpiece. Step backwards from the main handle 14 in the middle an electric cable 20 to power the motor. Also protrudes to the rear at the rear, lower housing portion of the housing 12 a dust collector 22 for picking up grinding dust arising when working with the power tool. A nose-like protrudes forward as an additional handle 13 serving area of the housing 12 ,

The main handle 14 is comfortable with one hand umgreifbar and about its longitudinal axis 15 against the restoring force of non-illustrated elastic means rotatable from a rotational output position to a rotational end position. In its rotational position is one inside the case 12 arranged, not shown motor for driving the sanding plate 16 switched off. Will the main handle 14 rotated by a small angle of rotation, in particular in a first detent position, the engine turns on at a minimum speed. Will the main handle 14 further rotated gradually increases with increasing angle of rotation of the main handle 14 the speed of the motor until this in the Drehendposition of the handle 14 receives its maximum speed.

The main handle 14 is on the case 12 over a silentblock 24 mounted vibration damped, allowing vibration of the housing 12 , caused by the motor or the movement of the grinding disc 16 and its drive parts, from the main handle 14 be kept away and the ease of use when working with the power tool 10 increase.

2 shows with a first cross section of the main handle 14 its rotary sleeve 141 on its circular inner contour 142 elastic projections 144 carries in a gear-like outer profile 146 a cylindrical carrier body 148 protrude and the catch-like rotational adjustment or securing a selected rotational position of the rotary sleeve 141 cause.

3 shows a second cross section of the main handle 14 with its rotary sleeve 141 and the carrier body 146 in the area of a switch button 17 , whose tactile cam 171 radially elastically reset is adjustable and raises or lowers the speed of the motor on its travel. This is the Tastnocken 171 through a ring wedge profile 145 depending on the direction of rotation of the rotary sleeve 141 placed radially inwards or outwards.

Claims (10)

Hand tool with one in a housing ( 12 ) and a motor driven by this tool ( 16 ) with a handle ( 13 . 14 ) as well as with a switch ( 17 ) for switching on and off, in particular for setting different speeds, of the motor, characterized in that the switch ( 17 ) with one, in particular about its longitudinal axis ( 15 ), from a start to a final rotary position rotatable handle ( 13 . 14 ) is gradually switchable. Hand tool according to claim 1, characterized in that the rotatable handle as the main handle ( 14 ) and / or as an additional handle ( 13 ) is configured. Powered hand tool according to claim 1 or 2, characterized in that the auxiliary handle ( 13 ) is rotatable about a longitudinal axis and with the switch ( 17 ) is switchable connectable. Hand tool according to one of the preceding claims, characterized in that the rotatable handle ( 13 . 14 ) rotatable. Hand tool according to one of the preceding claims, characterized in that the handle ( 13 . 14 ) by means of latching means ( 144 . 146 ) is rotationally adjustable latching. Hand tool according to one of the preceding claims, characterized in that the main handle ( 14 ) and the auxiliary handle ( 13 ) optionally with the switch ( 17 ) are switchable connectable. Hand tool according to claim 6, characterized in that the main handle ( 14 ) and additional handle ( 13 ) simultaneously switching with the switch ( 17 ) are connectable. Hand tool according to one of the preceding claims, characterized in that the main handle ( 14 ) parallel or transverse to the feed direction of the hand tool ( 10 ) is arranged and / or can be arranged. Hand tool according to one of the preceding claims, characterized in that the auxiliary handle ( 13 ) along or transversely to the feed direction of the hand tool ( 10 ) is arranged and / or can be arranged. Hand tool according to one of the preceding claims, characterized in that the handle ( 13 . 14 ) via vibration damping elements ( 24 ) with the housing ( 12 ) connected is.