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Chain saw

A technology of chain saws and chains, applied to chain saws. field, it can solve the problems of easy loosening of the guide plate, chain detachment and falling, and achieve the effect of not easy loosening, small resistance and variable resistance

Pending Publication Date: 2022-05-03
JIANGSU DONGCHENG TOOLS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The locking device realizes the one-button locking effect by integrating the tensioning chain and the fixed guide plate in one action, which saves time and effort; During the process, the pawl will move in reverse, and the distance that the pawl moves toward the operating part does not return to the normal structure, the guide plate is easy to loosen, and the chain has the risk of falling off.

Method used

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0030] see figure 1 and figure 2 As shown, the embodiment of the present invention relates to a chain saw 100 , which is suitable for cutting wood and the like. The chain saw 100 includes a casing 1, a driving assembly 3 installed in the casing 1, a rear handle 4 formed at the rear end of the casing 1, a front handle 5 formed at the upper end of the casing 1, and a brake located at the front end of the front handle 5. Component 6, the energy component 7 located under the rear handle 4, the switch component 8 installed on the rear handle 4, and the fixing component 2 that tightens the chain 300 and locks the guide plate 200, the guide plate 200 protrudes from the front end of the casing 1, and drives Under the energy supply of the energy component 7, the component 3 drives the chain 300 to move along the outer peripheral side of the guide pl...

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Abstract

The invention relates to a chain saw which is provided with a guide plate and a chain and comprises a machine shell, a driving assembly installed in the machine shell and a fixing assembly for tensioning the chain and locking the guide plate. The fixing assembly comprises a protective cover abutting against the guide plate, a rotary knob arranged on the outer side of the protective cover, a tensioning piece driven by the rotary knob, a locking piece connected to the protective cover in a clamped mode and an elastic piece located between the rotary knob and the locking piece, a first clamping part is arranged on the side, facing the locking piece, of the protective cover, a second clamping part is arranged on the side, facing the protective cover, of the locking piece, and when the guide plate is locked, the first clamping part is clamped to the second clamping part. The elastic piece deforms and abuts against the locking piece, so that the second clamping part is clamped to the first clamping part. The first clamping part is arranged on the protective cover, the second clamping part is arranged on the locking piece, the two clamping parts are clamped with each other, under the action of the elastic piece, the locking piece and the protective cover are difficult to generate relative movement, and the guide plate is difficult to loosen.

Description

【Technical field】 [0001] The invention relates to the field of garden tools, in particular to a chain saw. 【Background technique】 [0002] A chain saw is a kind of sawing tool that is driven by a motor to run a chain to cut wood and the like. The chain is installed on the outer periphery of the chain saw guide plate. During the operation, the chain will be worn. The user needs to manually replace the chain, and tighten and lock the guide plate after the replacement. The existing chain saw includes independent tension The structure of the part and the locking part is complex and takes up a lot of space; in addition, the user needs to complete the fixing of the guide plate through two actions, which is time-consuming and laborious. [0003] For the improvement of the existing chainsaw, please refer to the Chinese Invention Patent No. 201810566351.7 announced on November 19, 2021, which discloses a chainsaw and includes a locking device for fixing the guide plate and tensionin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27B17/00B27B17/14
CPCB27B17/00B27B17/14B27B17/02
Inventor 范功远
Owner JIANGSU DONGCHENG TOOLS TECH CO LTD
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