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Gearing, in particular for portable electric power tools

A technology of transmission and driving device, which is applied in the directions of portable mobile devices, manufacturing tools, mechanical equipment, etc., to achieve the effect of minimizing working noise and small structure space

Inactive Publication Date: 2012-07-04
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the driven gear is fixedly connected to the main shaft, it also prevents the main shaft from rotating

Method used

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  • Gearing, in particular for portable electric power tools
  • Gearing, in particular for portable electric power tools
  • Gearing, in particular for portable electric power tools

Examples

Experimental program
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Embodiment Construction

[0023] In the drawings, the same components and components having the same functions are denoted by the same reference numerals.

[0024] In the drawing is a transmission 1 for an angle grinder. figure 1 The components of the transmission are shown in an exploded view. The transmission 1 comprises a spindle 2, on the free end of which a thread 3 is provided for clamping a not shown grinding disc by means of a not shown clamping nut.

[0025] Furthermore, the transmission includes a ball bearing 4 with an outer bearing flange 5 . In the assembled state the spindle 2 is connected to the needle bearing 4 by means of a press fit. The transmission 1 also includes a clamping disk 6 which, in the assembled state, is also non-rotatably coupled to the main shaft 2 by means of a force fit. In addition, the clamping disk 6 is held in two radially inwardly protruding and axially extending keys 7 in two axially extending grooves 8 on the outer circumference of the spindle 2 . The clamp...

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PUM

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Abstract

The invention relates to a gearing, in particular for portable electric power tools, preferably for angle grinders, comprising an automatic locking device (6,15). According to the invention, provision is made for damping elements (20) to be integrated in the locking device module.

Description

technical field [0001] The invention relates to a transmission, in particular for a hand-held electric power tool, preferably an angle grinder. Background technique [0002] Angle grinders are usually equipped with a locking device (spindle lock) for manual operation on the transmission housing. Pressing and holding a button ensures that the spindle does not rotate when installing and removing a grinding disc. This can be achieved in that when the locking device is actuated a pin engages in a recess of the driven gear and thus prevents it from turning. Because the driven gear is fixedly connected to the main shaft, it also prevents the main shaft from rotating. Such manual locking devices for hand-held electric power tools are known, for example, from US 4,448,098 and US 3,802,518. [0003] Furthermore, automatic locking devices are known from drills, screwdrivers and hammer drills. This known locking device automatically stops the spindle when torque is transmitted from...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25F5/00F16D3/12B24B23/02
CPCB25F5/006B25F5/001F16D3/12B24B23/022Y10T74/19637
Inventor J·维克
Owner ROBERT BOSCH GMBH