Hand machine tool with protective hood

A hand-held machine tool and protective cover technology, which can be used in manufacturing tools, metal processing equipment, grinding/polishing equipment, etc., can solve problems such as high rupture risk, and achieve the effect of high production safety and reliable protection

Inactive Publication Date: 2010-07-28
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case there is a high above-mentioned risk of breakage for the grinding disc

Method used

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  • Hand machine tool with protective hood
  • Hand machine tool with protective hood
  • Hand machine tool with protective hood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] figure 1 The angle grinder 10, whose front area is only shown in FIG. For receiving and carrying a grinding disc not shown.

[0018] The clamping neck 14 serves to receive and hold a protective cover 18 which surrounds the clamping neck with its clamping collar 28 concentrically. To this end, the clamping neck 14 has an annular groove 13 and, in its region between the annular groove 13 and the free end, a defined radial recess 15 for securing the protective cap 18 against falling off. The guard should surround the grinding disc. In this case, the protective cover 18 in the form of a protective plate is intended to catch, by means of a corresponding rotational position, those grinding chips and dust which are formed during the grinding work with the angle grinder and which are thrown in the direction of the operator.

[0019] The outer radial recess 15 on the clamping neck 14 is used for the radially inwardly projecting coding projection of the clamping collar 28 of t...

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PUM

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Abstract

The invention relates to a hand machine tool (10, 100), in particular a right angle grinder, with machine housing (12, 120), on the clamping neck (14, 120) of which a protective hood (18, 180, 1800) can be fastened preferably by means of the clamp (28, 280, 2800) thereof which can be fixed to the protective hood body (22, 220, 2200). In particular, a positive-fit coding mechanism between the hand machine tool (10, 100) and the protective hood (18, 180, 1800), without which the protective hood (18, 180, 1800) is not mountable on the correspondingly assigned coded hand machine tool (10, 100), is characterized in that the defined coding mechanism (24, 240, 2400; 26, 260, 2600) which has in particular an interlocking, key-keyhole-type positive fit, is arranged between the clamp (28, 280, 2800) and the protective hood body (22, 220, 2200) in the area of a provided mutual fastening, without which coding mechanism the clamp (28, 280, 2800) cannot easily be fixed to the protective hood body (22, 220, 2200).

Description

technical field [0001] The invention relates to a hand-held power tool with a protective cover according to the preamble of claim 1 , in particular to an angle grinder. Background technique [0002] Various hand-held power tools, such as angle grinders, are already known with rotating disk-shaped cutters and with various protective covers. The guard should protect the operator from contact with the rotating disc cutter and also keep the operator away from sparks and particles of material. At the same time, however, it should allow comfortable machining of workpieces in different working positions. For this purpose, the protective hood covers the grinding disc semicircularly and is fixed rotatably relative to the angle grinder in such a way that the semicircular section of the grinding disc available for grinding can be selectively adjusted. This configuration of the guard attachment must ensure that no broken parts hit and injure the operator if the rotating grinding disc ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B55/05
CPCB24B55/052
Inventor S·安德拉希科S·温施
Owner ROBERT BOSCH GMBH
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