Dust-protected hand-held power tool

An electric tool and hand-held technology, applied in the field of hand-held electric tools, can solve the problems that dust can no longer be removed, electric drive parts are damaged, etc.

Active Publication Date: 2010-12-22
METABOWERKE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem arises here, in particular with hand-held power tools for metalworking, in particular for metal-cutting or grinding operations, for example in angle grinders: with the cooling air flow entrained into the interior of the hand-held power tool Magnetizable dust deposits in the case of electric components, especially in the case of permanent magnets of electric motors, which can hardly be removed due to magnetic adhesion
This can lead to significant damage to electric drive components

Method used

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  • Dust-protected hand-held power tool
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  • Dust-protected hand-held power tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Figure 1 and figure 2 A hand-held electric tool 2 in the form of an angle grinder is shown, which has a housing 4 which accommodates electric drive components and which also forms the handle part of the hand-held electric tool 2 . The housing 4 comprises two housing half-shells made of plastic which lie against each other in the longitudinal parting plane. A typically metallic gear housing part 8 is attached to the housing 4 in the direction of the tool 6 . Air inlet openings 10 are formed in the central region to the rear region of the housing 4 , through which a cooling air flow is formed, which makes the electric drive components inside the housing 4 work on the hand-held electric tool 2 . to cool down. The cooling air flow sucked into the interior of the housing 4 through these air intake openings 10 is discharged again at other points, typically in the region of the transition to the transmission housing part 8 .

[0018] In the region of the section of the hou...

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PUM

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Abstract

The invention relates to a battery-operated hand-held power tool (2), especially an angle grinder, comprising a housing base (4) accommodating the electromotive drive components and air inlet openings (10) supplying the electromotive drive components with a cooling air flow. In order to protect the electromotive components from dirt, the hand-held power tool is designed in such a manner that a filter element (20) is provided in the area of the air inlet openings (10) and keeps dust, especially magnetizable dust, away from the electromotive drive components. The filter element (20) is retained by a filter retaining part (12, 30) which can be attached to the exterior of the housing base (4). The filter retaining part (14, 30) can be elastically deformed to such an extent that it is slightly deformed, especially expanded, when attached to the housing base, and engages behind or snaps into an element on the housing base.

Description

technical field [0001] The invention relates to a forced-ventilated hand-held electric tool, in particular operated with a battery, having a housing for the electric drive components, in which air inlet openings are also provided for the electric drive. Drive component-loaded cooling air flow. In particular, the invention relates to a hand-held power tool in which the electric drive part has a permanent magnet or a permanent magnet. Background technique [0002] Hand-held electric tools generally require air cooling, so that ventilation openings are provided in the region of the electric drive, through which a cooling air flow acts on the electric drive components. The problem arises here, in particular with hand-held power tools for metalworking, in particular for metal-cutting or grinding operations, for example in angle grinders: with the cooling air flow entrained into the interior of the hand-held power tool Magnetizable dust deposits in the case of electric component...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25F5/00B24B23/02
CPCB24B23/028B25F5/008
Inventor V·赫施勒H·西科拉
Owner METABOWERKE
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