Reciprocating electric shaver

Abstract

The invention provides a reciprocating type electric shaver which comprises a cutting knife set composed of an outer knife and an inner knife in sliding contact with the inner surface of the outer knife, a motor and a vibration piece driving the inner knife to reciprocate left and right, and a power conversion mechanism used for converting rotating force of the motor into reciprocating power is arranged between the vibration piece and the motor. The power conversion mechanism comprises an eccentric wheel which is arranged on an output shaft of the motor and is provided with an eccentric shaft, a driver which is directly or indirectly connected to the vibrating piece, and a matching groove which is formed in the lower part of the driver made of a micro-elastic material and is in interference flexible fit with the eccentric shaft; damping between the left and right side matching walls of the driver matching groove and the eccentric shaft is larger than friction damping in the cutting knife set, and power conversion is achieved to output reciprocating power to drive the vibration piece. The driving element and the eccentric shaft are in interference flexible fit, even if the driving element is abraded after being used for a long time, the driving element can conduct compensation automatically, the driving element and the eccentric shaft can be kept in a zero fit state all the time, and the problems of loose fit and noise are effectively solved.

Description

technical field [0001] The invention relates to an electric shaver, in particular to a driving system of a reciprocating electric shaver. Background technique [0002] In the shaver industry, the driver is one of the most important components. Its main function is to drive the cutter head and power transmission. The structure is simple and the power transmission is direct. The current eccentric wheel and the driver are made of hard materials. Made, rigid fit between the two. Once the power of the motor is too large, there will be noise and the skin feel is not good. If the power of the motor is too small, it will freeze because the required current is too large. The power consumption is too large, and the torque requirement of the motor is very high. In addition, after long-term use, the eccentric wheel and the driver will wear out, and the zero-coordination relationship cannot be achieved. Not only will there be loud noises, but the power and operating efficiency of the cu...

AI Technical Summary

Problems solved by technology

Once the power of the motor is too large, there will be noise and the skin feel is not good. If the power of the motor is too small, it will freeze because the required current is too large. The power consumption is too large, and the torque requirement of the motor is very high.

In addition, after long-term use, the eccentric wheel and the driver will wear out, and the zero-fit relationship cannot be achieved. Not only will there be loud noises, but it will also affect the power and operating efficiency of the cutter head.

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