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Chain saw

A chain saw and chain technology, which is applied in the field of chain saws, can solve the problems of loose chain, narrow application range, and large number of parts of the fastening device, and achieve the effects of avoiding loss, convenient operation, and simple structure

Pending Publication Date: 2021-02-19
JIANGSU DONGCHENG TOOLS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] A chainsaw is a tool that drives the chain along the guide plate to cut at high speed through the sprocket. Before using the chain saw, the guide plate needs to be fixed on the main body, and the chain is tensioned through the guide plate before it can be used. Shaking or heating will cause slack, and may fall off the guide plate in serious cases. If the chain is not re-tensioned in time, it will easily endanger the safety of the user. The existing chain tension adjustment method is more troublesome. One way is to use a special The tool adjusts the threaded fit of the screw rod and the nut. This method requires the use of special tools, so the limitation is relatively narrow and the scope of application is narrow. Another method is that the tension of the chain and the fastening of the guide plate are adjusted separately through two mechanisms. There are too many parts in the fastening device of this adjustment method and the operation is cumbersome

Method used

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Embodiment Construction

[0023]The present invention will be further described in detail below with reference to the drawings and embodiments.

[0024]Such asFigure 1-Figure 4Shown is a chain saw involved in an embodiment of the present invention, please refer toFigure 4 The chain saw includes a main body 100, a chain 7, and a guide plate 6 that guides the chain 7. The main body 100 includes a sprocket that drives the chain 7 to rotate and cut along the edge of the guide plate 6, and the guide plate 6 forwards Extending the main body 100 and being able to move back and forth relative to the main body 100 in an unfixed state, the guide plate 6 is fixed on the guide plate fixing plate 12 provided on one side of the main body 100, and the guide plate is fixed The side of the plate 12 facing the guide plate 6 is provided with a convex portion 121, and the guide plate 6 is correspondingly provided with a stroke groove 61. The convex portion 121 passes through the stroke groove 61 and restricts the guide plate 6 alo...

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Abstract

A chain saw comprises a main machine body, a chain and a guide plate for guiding the chain, wherein the main machine body comprises a chain wheel for driving the chain to rotationally cut along the edge of the guide plate, and the guide plate extends out of the main machine body and moves forwards and backwards relative to the main machine body in a non-fixed state; the chain saw further comprisesa locking device used for fixing the guide plate to the main machine body and tensioning the chain, the locking device comprises a cover plate and a pressing assembly, and the pressing assembly rotates along the axis thereof and moves in the direction perpendicular to the guide plate to press the guide plate to the main machine body; the locking device further comprises a tensioning assembly forproviding forward thrust for the guide plate so as to tension the chain, the tensioning assembly is driven to linearly move forwards when the pressing assembly rotates to press the guide plate, and the chain saw can complete fastening of the guide plate and tensioning of the chain through one action.

Description

【Technical Field】[0001]The invention relates to the technical field of electric tools, in particular to a chain saw for cutting trees and the like.【Background technique】[0002]The chainsaw is a tool that drives the chain along the guide plate to rotate at a high speed through the sprocket. The chain saw needs to fix the guide plate on the main body before use, and tension the chain through the guide plate before it can be used. Shaking or heating will cause slack, and it may fall off the guide plate in severe cases. If the chain is not re-tensioned in time, it is easy to endanger the safety of the user. The existing chain tension adjustment method is more troublesome. One method requires the use of a dedicated one. The tool adjusts the screw and nut thread coordination. This method requires the use of special tools, so the limitation is greater and the scope of application is narrow. The other method is to adjust the tension of the chain and the fastening of the guide plate through t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27B17/00B27B17/14A01G3/08
CPCA01G3/086B27B17/00B27B17/14
Inventor 朱惠斌董中兴
Owner JIANGSU DONGCHENG TOOLS TECH CO LTD
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