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Sealing lip on tool holder

A sealing lip and tool technology, applied in the tool assembly device of chisel hammer, dust-proof device field, can solve the problem of insufficient protection, etc.

Pending Publication Date: 2021-12-31
HILTI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Dust protection devices of the type mentioned at the outset, as well as tool assembly devices with dust protection devices, are known in principle from the prior art, but generally offer only insufficient protection against the ingress of dust (ie sealing features)

Method used

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  • Sealing lip on tool holder
  • Sealing lip on tool holder
  • Sealing lip on tool holder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] figure 1 A power tool 1 in the form of a chisel hammer is shown. Alternatively, the power tool 1 can also be in the form of a hammer drill, a power drill or a combination hammer. A combination hammer is a combination hammer drill and chisel hammer. Furthermore, the power tool 1 can also be a saw, in particular a reciprocating saw.

[0025] figure 1 The illustrated power tool 1 basically comprises a housing 2 , a tool mounting device 3 , a drive 4 , a striking mechanism 5 and a holding device 11 . The driver 4 , the striking mechanism 5 and the holding device 11 are positioned in the interior of the housing 2 of the power tool 1 . The drive 4 is in the form of an electric motor and is connected in the interior of the housing 2 to the impact mechanism 5 and the holding device 11 in such a way that the pulses generated by the drive 4 and the impact mechanism 5 are transmitted to the tool 7 located in the holding device 11 .

[0026] The housing 2 has a front end 2a a...

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PUM

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Abstract

The invention relates to a tool holder for a machine tool, in particular a chipping hammer, containing a holding device for receiving and holding a tool shank, a retaining element running at least partially around the holding device and a dust guard for preventing dust from penetrating into the tool holder: The dust guard contains at least one first dust wiper element, at least one fixing bead and at least one sealing lip element, the sealing lip element being positioned in the axial direction in front of the retaining element. The invention also relates to a dust guard for use in a tool holder.

Description

technical field [0001] The invention relates to a tool mounting device for a power tool, in particular a chisel hammer, comprising a holding device for receiving and holding a tool shank, extending at least around one or more sections of the holding device The holding element, and the dustproof device for preventing dust from intruding into the tool assembly device. [0002] Furthermore, the invention relates to a dust protection device for use in a tool mounting device. Background technique [0003] Dust may form when working with power tools and especially when working with a chisel hammer on mineral materials such as concrete or stone. Such dust can enter the interior of the power tool through small openings, such as gaps between mutually adjoining housing parts. Dust, especially mineral dust, can have a non-negligible abrasive effect on moving parts on components of power tools. Damage to individual components of a power tool or even failure of the entire power tool c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B31/00B25D17/06B25D17/08B25D17/20F16J15/06B23D51/10
CPCB25D17/20B25D17/06B23B31/001B25D17/088F16J15/061F16J15/062B23D51/10B25D2217/0019B25D2250/345B25D2250/365B23B2231/44B23B2231/28B25D2217/0069Y10T279/17076Y10T279/3493
Inventor U·豪普特曼U·曼德尔
Owner HILTI AG