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Chain saw

A technology for chainsaws and saw chains, applied in chainsaws, sawing equipment, cutting tools, etc., can solve the problems of increasing assembly difficulty, poor operating comfort, and limited screw size, saving assembly time and increasing comfort. , the effect of simple operation

Active Publication Date: 2013-04-03
NANJING CHERVON IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To meet the assembly conditions, when the position of the guide plate is fixed, it is necessary to manually adjust the position of the tension nut on the cover plate. The nut is hidden under the cover plate, and it is not easy to observe its specific position, thus increasin

Method used

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Example Embodiment

[0024] In order to understand the technical content of the present invention more conveniently, specific implementations are described as follows with accompanying drawings.

[0025] Please refer to figure 1 and figure 2 , A chain saw 10, including a housing 11, a saw chain 12, a sprocket 13 supported in the housing 11 and capable of driving the saw chain 12 to move, and a guide plate 14 for supporting and guiding the saw chain 12, which cooperates with the housing 11 The cover plate 15 and the sprocket tensioning mechanism 16 that clamp the guide plate 14 to prevent it from shaking in the vertical direction.

[0026] The sprocket 13 is driven by a motor, and the teeth of the sprocket 13 (not shown in the figure) are connected to the saw chain 12. The saw chain 12 surrounds the edge of the guide plate 14 and can be guided cyclically by the guide plate 14. One end of the guide plate 14 is supported on the housing 11, and the other end extends out of the housing 11 along the longit...

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Abstract

The invention provides a chain saw comprising a shell body, a saw chain, a sprocket, a guide plate which is matched with the sprocket and is used for supporting and guiding the saw chain, a cover plate which is matched with the shell body to clamp the guide plate so as to prevent the guide plate from shaking in a vertical direction and a sprocket tensioning mechanism; the sprocket tensioning mechanism is integrally arranged in the shell body movably, so that the position states of the saw chain, the guide plate, a tensioning nut, the sprocket and other parts can be observed in a whole assembly process, the positioning is accurate, and the operation is simple and quick. The sprocket tensioning mechanism comprises the tensioning nut, a transmission part and a tensioning hand wheel; and an angle between the input shaft and the output shaft of the transmission part is more than 0 degree and less than 180 degrees. The tensioning hand wheel is connected with the transmission part, the transmission part drives the motion of the tensioning nut which is fixedly arranged on the guide plate so as to adjust a distance between the guide plate and the sprocket and tension the saw chain, and the comfort of operation is improved.

Description

technical field [0001] The invention relates to a garden tool, in particular to a chain saw. Background technique [0002] A chain saw is a garden tool that drives the interlaced L-shaped blades on the saw chain to move laterally through a power device to cut wood or branches. Because the chain links in the saw chain of the chain saw will be worn during use, the saw chain will elongate and become loose on the guide plate, resulting in the chain saw not working properly, so it is necessary to adjust the tension of the saw chain frequently to maintain The chainsaw works fine. [0003] At present, there are generally two ways to adjust the tension of the saw chain: one is to use external tools to adjust, this method is relatively primitive, and other tools are needed for adjustment, which is very inconvenient; the other is to use the chain saw The adjustment mechanism can be used for adjustment without the need for other external tools, such as using the adjustment handwheel ...

Claims

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Application Information

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IPC IPC(8): B27B17/00B27B17/08B27B17/14A01G3/08
CPCB27B17/14
Inventor 山冈敏成付彗星
Owner NANJING CHERVON IND
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