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Battery-powered hand tool machine and method for running battery-powered hand tool machine

A technology of hand-held machine tools and storage batteries, which is applied in the direction of manufacturing tools, motor control, electrical components, etc., can solve the problems of undesired rapid discharge of machine tool continuous working time, undesired rapid discharge, and reduction of machine tool continuous working time, etc., to achieve Safe and reliable operation, simple method and manner, fast and reliable reduction of effects

Active Publication Date: 2011-08-17
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the prior art is that when the rechargeable hand tool machine is operated at a substantially constant operating speed independent of the operating state, a comparatively high motor current is supplied by the associated battery pack, which leads to an undesirably rapid deceleration of the battery pack. Discharge and thus reduce the continuous operating time of the machine tool
Even when the rechargeable hand-held power tool is operated with a reduced idling voltage, the corresponding battery pack usually still supplies a comparatively high motor current, which in turn leads to an undesirably rapid discharge of the battery pack and thus limits the power tool continuous working time

Method used

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  • Battery-powered hand tool machine and method for running battery-powered hand tool machine

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Embodiment approach

[0032] figure 1 An exemplary battery-operated hand power tool 100 is shown, which has a housing 105 . According to one specific embodiment, rechargeable hand tool machine 100 can be connected mechanically and electrically to rechargeable battery pack 190 for a grid-independent power supply. The accumulator pack is schematically arranged and fixed in the housing 105, but can alternatively be configured as an exchangeable accumulator pack, which can be fixed mechanically in the housing 105 or can be pushed at least partially. into the housing.

[0033] An electric drive motor 180 supplied with current by a battery pack 190 and a corresponding control unit 170 are located in the housing 105 . The drive motor 180 can be actuated, ie switched on and off, via a manual switch 195 , for example configured as an on / off switch, and can be any type of motor, for example an electronically commutated motor or a DC motor. The mode of operation and construction of suitable drive motors ar...

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PUM

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Abstract

The present invention relates to a battery-powered hand tool machine (100) having a drive motor (180) for driving a tool (120), wherein the drive motor (180) is configured to drive the tool after switching-on of the battery-powered hand tool machine (100) at a preset operating speed in the load mode and in the no-load mode. The battery-powered hand tool machine also comprises a control unit (170) which is configured to reduce the preset operating speed in the no-load mode to a preset idling speed.

Description

technical field [0001] The invention relates to a rechargeable hand power tool with a drive motor for driving a tool, wherein the drive motor is designed for switching on the rechargeable hand power tool in load operation and in unload operation. The tool is driven at a predetermined operating speed. Background technique [0002] Battery-powered hand-held power tools of this type are known from the prior art, in which an on / off switch is provided for switching the machine on or off. When the power tool is switched on, the corresponding drive motor is operated at a substantially constant operating speed, irrespective of whether the hand power tool is being operated in no-load or loaded mode. [0003] Furthermore, the battery-operated hand power tool can have a rotational speed control. This allows the user to adjust the operating speed to a suitable working speed in load operation and to an idle speed which is reduced compared to the working speed in no-load operation. [...

Claims

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Application Information

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IPC IPC(8): B25F5/00
CPCH02P29/0033B25F5/00H02P29/40B24B23/00H02P7/00H02P31/00
Inventor C·利普塔克C·莱瓦伊
Owner ROBERT BOSCH GMBH
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