Power tool

Abstract

The invention discloses a power tool. The power tool comprises a housing, a motor, an output shaft, a working head, a transmission component, an auxiliary handle and a shock absorbing component; the housing is provided with a main handle which is used for a user to hold; the motor is arranged inside the housing; the motor further comprises a driving shaft; the working head comprises the output shaft and a grinding plate which is connected to the output shaft; the output shaft is driven by the motor; the front end of the auxiliary handle is installed at a position, close to the working head, ofthe housing; the auxiliary handle comprises a holding part extending along a center line; the shock absorbing component comprises a mass part and an electric part, wherein the auxiliary handle further comprises an end cover which is arranged at the rear end of the holding part; the rear end is far away from the housing relative to the front end; an accommodating chamber used for accommodating theshock absorbing component is formed in a surrounding manner when the end cover is combined with the holding part; the elastic part is arranged between the mass part and the wall of the accommodatingchamber; and the ratio of the inherent frequency W1 of the shock absorbing component to the rotation frequency W2 of the output shaft in rotation is larger than or equal to 0.7 and smaller than or equal to 1.3. The power tool achieves a good shock absorption effect.

Description

technical field [0001] The invention relates to a power tool, in particular to an angle grinder. Background technique [0002] During the working process of power tools, large vibrations are usually generated. For example, for angle grinding, the grinding disc will vibrate the whole machine when it comes into contact with the workpiece, and the motor and transmission components will also vibrate during the transmission process. Moreover, it may be caused by the specific structure of the grinding disc and installation errors. The grinding plate has a certain amount of unbalance when it rotates. This unbalance will cause the angle grinder to further generate greater vibration during operation. These vibrations will prevent the user from operating the power tool stably. For this reason, the angle grinder is usually designed in the shell An auxiliary handle is installed on the body, so that the user can hold the power tool with both hands to achieve a relatively stable operatio...

AI Technical Summary

Problems solved by technology

For example, for angle grinding, the grinding disc will vibrate the whole machine when it comes into contact with the workpiece, and the motor and transmission components will also vibrate during the transmission process. Moreover, it may be caused by the specific structure of the grinding disc and installation errors. The grinding plate has a certain amount of unbalance when it rotates. This unbalance will cause the angle grinder to further generate greater vibration during operation. These vibrations will prevent the user from operating the power tool stably. For this reason, the angle grinder is usually designed in the shell An auxiliary handle is installed on the body, so that the user can hold the power tool with both hands to achieve a relatively stable operation, but because the vibration of the power tool is too large, it still cannot guarantee that the user can operate stably, and the vibration will be transmitted through the auxiliary handle To the user, it is easy to cause discomfort to the user's body

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