Chain saw

Abstract

A chain saw comprises a casing, a motor, a saw chain, a gearbox mounted in the casing, a transmission mechanism, a guide plate for the guide support of the saw chain, a cover plate matched with the casing and a switch, wherein the transmission mechanism is driven by the motor and accommodated in the gearbox, and the saw chain is driven by the transmission mechanism to move. The chain saw further comprises an oil supply system, wherein the oil supply system comprises an oil kettle and an oil pump assembly connected with the oil kettle through an oil-in pipe and used for supplying the saw chain with oil, the gearbox comprises a gearbox body and a gearbox cover arranged on the gearbox body, the oil pump assembly is arranged in the gearbox body, and the parts that the gearbox body and the gearbox cover are combined are sealed by a seal ring. Therefore, chain saw lubricating oil can be prevented from leaking out of a host engine and causes waste and environmental pollution, the stability and the reliability of the whole oil pumping system are improved, and much inconvenience caused by oil leakage to a user is avoided.

Description

Technical field [0001] The invention relates to a garden electric tool, in particular to a chain saw. Background technique [0002] As a garden electric tool, chain saws are widely used in households, gardens and other fields. The working principle of the chain saw is to drive the transmission mechanism through the power device, and the saw chain through the transmission mechanism to cut. During operation, a lot of heat is generated between the saw chain and other components due to friction, and it needs to be lubricated in time to prevent the saw chain from heating up and damage. Therefore, an oil supply system is often provided in the chain saw housing, including an oil tank that stores lubricating oil and an oil pump connected to the oil tank. The oil tank delivers the lubricating oil to the oil pump through the oil pipe. The oil pump is adjacent to the chain and feeds to the saw chain. Supply lubricating oil to lubricate the chain. [0003] The oil pump is the core component...

AI Technical Summary

Problems solved by technology

[0003] The oil pump in the above-mentioned oil supply system is the core component, and the oil leakage prevention problem of the oil pump body is the key to the stability of the oil supply system of chain saw products. There will be oil leakage, which will lead to problems such as poor machine lubrication, waste of resources, and environmental pollution.

[0004] In addition, because the user usually puts it for a period of time after filling up the engine oil and continues to use it for a period of time, the machine often has oil stored in the oil pot during the placement process. Leakage out of the machine will also cause waste of resources, environmental pollution, and affect the cleanliness of the machine during use

In the existing chain saw products, a bolt is used to press the oil outlet pipe to cut off the oil passage, and there are generally two methods for adjusting the screw: one is to use external tools to adjust, this method is relatively primitive, and other tools are needed for adjustment. Tools, very inconvenient; the other is to adjust by adjusting the accessories, without the need for other external tools, such as setting the adjustment knob on the top of the bolt for adjustment

However, using the above methods requires additional operations by the user, which is not convenient and fast enough to use. In addition, if the user forgets to tighten the bolt, the problem of oil leakage will also occur.

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