a chain saw

Abstract

The invention discloses a chain saw, which belongs to the technical field of logging and timber making tools, and is designed to solve the problems of easy oil leakage and the like in the existing structure. The chain saw of the present invention includes a motor, a guide plate, a chain, an oil tank, an oil pump and a magnetic drive; the motor drives the chain to move; the guide plate guides the movement of the chain; the oil pump includes a pump body and movable parts; the movable parts move relative to the pump body to realize the pumping of the oil pump Oil function; the oil pump is located in the oil tank; the magnetic driving part is arranged outside the oil tank; the magnetic driving part moves relative to the pump body through the magnetic driving movable part. The chainsaw of the present invention realizes the oil pumping work of the oil pump through magnetic drive, and there is no need to provide an opening for installing the driving mechanism of the oil pump on the oil tank. The case of oil leakage outside the fuel tank. The structural design is ingenious, the oil leakage prevention effect is good, and it is suitable for popularization and use.

Description

technical field [0001] The invention relates to the technical field of logging and timber making tools, in particular to a chain saw. Background technique [0002] Chainsaw is a kind of power device used in fields such as logging and lumber making. It has the advantages of convenient portability and simple operation, but its maintenance and repair are complicated and require lubrication. A chainsaw generally includes a casing, a guide plate disposed on the casing, a chain disposed on the guide plate, and a motor, an oil tank, an oil pump and a circuit board accommodated in the casing. Driven by the motor, the chain rotates around the guide plate to cut the target. The oil pump can pump the lubricating oil in the oil tank to the motor. An oil pump usually includes a pump body and moving parts. The movable part moves relative to the pump body to realize the oil pumping function of the oil pump. Common oil pumps include piston oil pumps and impeller oil pumps. For piston o...

AI Technical Summary

Problems solved by technology

[0003] At present, the oil pump of the chainsaw and the interface between the oil pump and the oil pipe are usually placed outside the oil tank. This arrangement has the following disadvantages: after long-term use and wear and aging, the sealing of the oil pump and the interface will become poor, and oil leakage may occur; And when the oil pump is placed outside the fuel tank, there are many interfaces, especially those outside the fuel tank.

[0004] And if the oil pump is placed inside the oil tank, although the oil of the oil pump can be avoided from being directly exposed outside the oil tank, since the driving mechanism used to drive the oil pump needs to pass through the tank wall of the oil tank to be connected with the oil pump, it is necessary to set it on the oil tank for driving. The opening through which the mechanism passes, which in turn brings about the problem of oil leakage at the opening

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