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Handheld work apparatus having a guard

A technology of working equipment and protection part, which is applied in the field of hand-held working equipment, can solve the problems of high weight of rock cutting machines, and achieve the effects of low weight, strong structure and avoiding wear and tear.

Active Publication Date: 2013-04-17
ANDREAS STIHL AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain sufficient stability of the casing in the region of this front, the casing has to be embodied as thick-walled, which leads to a high weight of the rock cutter

Method used

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  • Handheld work apparatus having a guard
  • Handheld work apparatus having a guard
  • Handheld work apparatus having a guard

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] figure 1 and 2 A rock cutter 1 is shown as an exemplary embodiment for a hand-held power tool, which is constructed similarly to a power saw. The working device can also be a cutting machine or the like. The rock cutter 1 has a housing 2 in which a drive motor 5 is arranged. A guide rail 9 is fixed at the casing 2, which is figure 1 is schematically shown in . A cutting chain 10 , which is driven by a drive motor 5 , is arranged circumferentially on the guide rail 9 . The cutting chain 10 has a large number of cutting elements 11 . Each element suitable for cutting metal and / or mineral material such as rock is referred to herein as a cutting element 11 . Here, the cutting element 11 may grind or otherwise cut through the rock. The drive pinion of the cutting chain 10 is covered by a sprocket cover 12 fixed on the housing 2 . The drive motor 5 is designed as an internal combustion engine, in particular a mixed-lubrication internal combustion engine, and has an ex...

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PUM

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Abstract

A handheld work apparatus such as a stone cutter (1) having a housing (2) in which a drive motor (5) is arranged. The work apparatus has a tool driven by the drive motor (5) for cutting mineral or metallic materials. The housing (2) has a housing front end (16) facing the workpiece to be cut and arranged adjacent to the workpiece. The tool projects beyond the housing front end (16). In order to avoid damage on the housing front end (16), it is provided that an elastic guard (17, 47), which extends over at least 50% of the width (b) of the housing front end (16), is arranged on the housing front end (16).

Description

technical field [0001] The invention relates to a hand-held power tool of the type specified in the preamble of claim 1 . Background technique [0002] A hand-held power tool is known from DE 100 50 732 A1, namely a rock cutter, which has a cutting chain for cutting rock. The cutting chain is arranged on a guide rail, which is fixed on the housing and protrudes forward from the housing. [0003] It was shown that the front of the casing can violently crash into rocks during operation. In order to achieve sufficient stability of the housing in the region of this front, the housing has to be designed with thick walls, which leads to a high weight of the rock cutter. Contents of the invention [0004] The object of the present invention is to provide a hand-held power tool of this type which has a robust construction and a low weight. [0005] This object is achieved by a hand-held power tool with the features of claim 1 . [0006] During operation, the front of the housi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28D1/08
CPCB28D1/082B27B17/00B27B17/0033
Inventor H.齐默曼J.兰克
Owner ANDREAS STIHL AG & CO KG