Power tool

Abstract

The invention discloses a power tool which comprises a shell, a motor arranged in the shell, an output shaft used for housing at least a part of working components, a transmission mechanism used for transferring power of the motor to the output shaft, a hammering mechanism driven by the motor to perform linear reciprocating motion along the axis of the output shaft and an oil storage cavity arranged between the output shaft and the shell; the oil storage cavity is provided with at least one oil outlet; the output shaft is provided with at least one oil inlet corresponding to the oil outlet; and when projections of the oil outlet and the oil inlet in the axial direction of the output shaft are at least partly coincided, grease can flow into the oil inlet from the oil outlet. The power toolprovided by the invention is convenient to operate, improves the working efficiency and is prolonged in service life.

Description

Technical field [0001] The invention relates to a power tool. Background technique [0002] When a power tool such as an electric hammer is working, the working parts relative to the output shaft, and the hammering parts relative to the output shaft do high-frequency reciprocating vibration (4000 to 6000 times / min), which will seriously increase the handle of the working part and the output shaft The frictional resistance between them causes the hammer to block, thereby reducing the efficiency of punching of the electric hammer. [0003] In order to solve this problem, most users currently apply grease to the handle of the working part to improve the lubrication of the handle of the working part, reduce frictional resistance, and improve the efficiency of drilling. This is easy to cause three major problems: 1. You have to dip in oil 10 to 12 times a day, and because the temperature of the working parts is too high, you need to wear gloves, which is very inconvenient and affects w...

AI Technical Summary

Problems solved by technology

This will easily lead to three major problems: 1. You have to dip in oil 10 to 12 times a day, and because the temperature of the working parts is too high, you need to wear gloves, which is very inconvenient and affects work efficiency; 2. It is easy to forget to dip in oil, resulting in wear and tear on the output shaft ;3. It is easy to apply unevenly. If the amount of application is large, the oil will be thrown onto the user. If the amount of application is small, the lubrication effect will not be achieved.

[0004] In addition, the power tool is not equipped with a lubrication mechanism for separately lubricating the handle of the working part, and only relies on the leakage of grease from other parts of the fuselage to the handle of the working part. The grease in other parts of the fuselage is consumed too quickly. If the lubricating oil is not replenished in time, the parts will be worn and the service life of the tool will be reduced.

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