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Chain Guards and Chainsaw Systems

A chain cover and chain saw technology, which is applied to sawing equipment, sawing machine devices, sawing components, etc., can solve the problems of the chain cover falling off, the cutting kit being not completely covered, and the lack of clamping force, etc., and achieving the effect of reliable maintenance.

Active Publication Date: 2017-11-28
ANDREAS STIHL AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It is disadvantageous to insert a chain guard that is too short on a cutting kit that is too long, because the cutting kit is not completely covered here
Conversely, with a chain guard that is too long on a shorter cutting set, too little or no clamping force is observed, which in connection with a poor fit (passform) can lead to the chain guard falling off

Method used

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  • Chain Guards and Chainsaw Systems
  • Chain Guards and Chainsaw Systems
  • Chain Guards and Chainsaw Systems

Examples

Experimental program
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Embodiment Construction

[0029] figure 1 In a perspective view is shown a chainsaw system embodied according to the invention comprising different, replaceable cutting sets 2, 2' with different lengths L, L' (which are in Figure 2 to Figure 8 The chain saw 1 shown in ). Furthermore, the chain saw system has a chain guard 3 which can be pushed onto the corresponding cutting set 2, 2' ( Figure 2 to Figure 8 )superior.

[0030] The chain saw 1 has a motor housing 22 in which a drive motor (not shown in detail) is arranged. Furthermore, a front handle 23 and a rear handle 24 are arranged on the motor housing 22 for guiding the chain saw 1 during sawing.

[0031]The chain guard 3 is designed as a box closed all around made of plastic with a wall thickness of approximately 1.5 mm and has two opposite side walls 5 , 6 and a circumferential peripheral wall 25 on the narrow side. As the only exception to the otherwise overall closed construction, the chain guard 3 is provided on its side facing the motor...

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PUM

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Abstract

The invention relates to a chain guard and a chain saw system with such a chain guard for different, exchangeable cutting sets of chain saws with different lengths. The chain guard has an entry opening for the cutting set and is also designed as a closed box with two opposite side walls for covering the sides of the cutting set. With respect to its longitudinal axis, the chain guard has a front end opposite the insertion opening. In at least one side wall of the chain guard, a first detent recess is formed in the region of its front end and at least one second detent recess is formed at a distance from the first detent recess in the direction of the insertion opening. , wherein the first locking recess and the second locking recess each have an arc-shaped locking surface towards the front end of the chain cover for form-fitting with the cutting chains of the cutting sets of different lengths, in the direction of the longitudinal axis of the chain cover The upper lock is functional.

Description

technical field [0001] The invention relates to a chain guard for a cutting set and to a chain saw system with such a chain guard. Background technique [0002] Motor-driven chain saws of a common design comprise a cutting unit with a cutting chain that can be driven by the drive motor of the chain saw and with guide rails on which the cutting chain runs around the outer edge. For transporting or supporting the chainsaw, the chain guard is pushed onto the cutting set, the chain guard has a penetration opening (Einfädelöffnung) for the cutting set in a typical design and is also designed with two sides for covering the cutting set. a closed box with two opposing side walls. Due to the overall closed design of the chain guard except for the insertion opening, the cutting set is covered as a whole. On the one hand, the cutting set is thus protected against external influences, such as contamination or the like. On the other hand, it also protects the environment against dirt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23D59/00B23D57/02
CPCB27G19/003
Inventor B.舍尔
Owner ANDREAS STIHL AG & CO KG
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