Chain tension displaying structure for chain saw
A technology for displaying structures and chains, which can be used in sawing machine devices, metal sawing equipment, metal processing equipment, etc., and can solve problems such as loose chains, limited number of chain replacements, and detachment
Active Publication Date: 2012-06-27
ZHEJIANG YAT ELECTRICAL APPLIANCE CO LTD
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Problems solved by technology
[0002] When workers assemble chain saw chains, or when users replace chain saw chains, they often rely on their usual installation experience, that is, feel to determine whether the tightness of the chain is in place. It is possible to adjust the tightness of the chain in place, but due to the limited number of replacement chains, it is inevitable that the user cannot adjust the tightness of the chain in place when installing the chain, or the user thinks that the chain is already tight enough. After a chain saw, after a period of severe vibration, the chain will loosen and even break away from the chain plate, which may cause injury accidents
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[0016] Such as figure 1 Shown is a structural schematic diagram of an embodiment of the present invention, a chain saw chain tightness display structure, including a casing 1, a sprocket 2, a chain plate 3 and a chain 4, the sprocket is connected in the casing through a rotating shaft 11, and the chain plate One end is fixed in the casing by the positioning screw 12, the chain is set on the chain plate and driven by the sprocket, and the positioning screw is provided with an adjustment structure for adjusting the distance between the chain plate and the sprocket to loosen or tighten the chain. An induction device is provided on the casing to change the action force when the induction adjustment structure operates, and a display lamp assembly connected with the induction device by a signal line is arranged on the casing.
[0017] The sensing device is a strain sensor 5, and the strain sensor is arranged in the through hole of the set screw on the casing and is in contact with t...
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The invention discloses a chain tension displaying structure for a chain saw, comprising a case, a chain wheel, a chain plate and a chain, wherein the chain wheel is rotatably connected in the case by a rotating shaft; one end of the chain plate is fixed in the case by a positioning screw; the chain is arranged on the chain plate and is driven by the chain wheel; an adjusting structure for adjusting the relative distance between the chain plate and the chain wheel so as to loosen or tension the chain is arranged on the case; a sensing device for sensing the change of force acting on the case when the adjusting structure acts is arranged on the case; and a display lamp component connected with the sensing device by a signal line is arranged on the case. According to the invention, the tension condition of the chain is converted into the acting force of a chain plate fixing piece (the positioning screw) to the case, and the acting force is converted into an electric signal by a strain sensor and finally the electric signal is visually shown by change of a display lamp, so that a user can directly know whether the chain is tensioned in place. The chain tension displaying structure isvery simple and convenient and is suitable for the majority of users.
Description
technical field [0001] The invention relates to a chain saw structure, in particular to a chain saw chain tightness display structure. Background technique [0002] When workers assemble chain saw chains, or when users replace chain saw chains, they often rely on their usual installation experience, that is, feel to determine whether the tightness of the chain is in place. It is possible to adjust the tightness of the chain in place, but due to the limited number of replacement chains, it is inevitable that the user cannot adjust the tightness of the chain in place when installing the chain, or the user thinks that the chain is already tight enough. After the chain saw, after a period of severe vibration, the chain will loosen and even break away from the chain plate, which may cause injury accidents. Contents of the invention [0003] The problem to be solved by the present invention is to provide a chain saw chain tightness display structure, the design structure is sim...
Claims
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IPC IPC(8): B23D57/02
Inventor 韩焕忠
Owner ZHEJIANG YAT ELECTRICAL APPLIANCE CO LTD