Power tool

Abstract

The invention relates to a power tool which comprises a head shell and a machine shell. The machine shell is internally provided with a motor and a transmission mechanism, an output shaft extends from the head shell and can be driven by the motor to make rotary oscillating movement around a self axis through torque transferring of the transmission mechanism, the head shell is provided with two ports, one port extends outwards to be provided with a circular lateral wall which is encircled to form a containing space, and the output shaft is arranged in the containing space and arranged in the central position of the loop relative to the lateral wall. The power tool also comprises an elastic element which is likewise arranged in the containing space and respectively and radially connected with the output shaft and the lateral wall. By the action of the elastic element, the invention can fully absorb vibration generated on the output shaft and vibration which is transferred from an asymmetric balancer attachment to the output shaft so as to further obviously lessen the vibration which is transferred to the head shell by the output shaft, greatly solve the problem of hand numbness of a user because of the vibration in the use process and improve the comfort degree of operation.

Description

technical field [0001] The invention relates to a power tool, especially a hand-held swing power tool. Background technique [0002] The multi-function machine is a common oscillating power tool in the industry, because its output shaft rotates and oscillates around the axis. Therefore, when different attachment working heads are installed on the output shaft, it can realize a variety of different operation functions, such as sawing, cutting, grinding, scraping, etc., to meet different working requirements. [0003] The more common multi-function machines currently on the market generally include a motor. The motor shaft of the motor is connected to an eccentric pin, and a bearing is sheathed on the eccentric pin, thereby forming an eccentric wheel structure. When the motor shaft rotates, the eccentric wheel structure can rotate eccentrically around the axis of the motor shaft. The output shaft of the multifunctional machine is set perpendicular to the motor shaft, and a s...

AI Technical Summary

Problems solved by technology

[0006] However, this shock absorption method mainly solves the vibration problem in the case of a bare machine or a symmetrically balanced accessory working head, such as a triangular grinding disc. If the user uses an asymmetrically balanced accessory working head, such as a straight saw sheet, this type of shock absorption will not be able to play a role in shock absorption

Because the action point of the straight saw blade is located on one side of the output shaft, it is unbalanced during the swing process, and it will also cause a large vibration, and this vibration will be transmitted to the housing through the output shaft, and the same Cause users to feel numb after long-term use

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