With the improvement of people's living standards, more and more families will prepare a household hair clipper at home to cut hair for their family members in addition to going to the barber shop for styling. For example, cutting bangs, giving haircuts to children and the elderly, etc. Not only saves time but also saves expense. So do you know how the hair clipper completes the high-speed reciprocating motion and cuts the hair? Today I will share with you the working principle of the electric hair clipper.

The main working part of the hair clipper is the cutter head. The cutter head consists of two rows of bladed teeth overlapping one above the other. Generally, the upper row is the moving knife, and the lower row is the fixed knife. The fixed knife is fixed during use, while the moving knife is reciprocating at high speed. The two cooperate with each other to cut the hair.

How does the moving knife complete the high-speed reciprocating motion? There are 3 common forms on the market.
Driven by an electromagnetic motor. It can also be said to be a magnetic oscillator. Almost all cheap electric hair clippers on the market use this type of motor. These motors are very simple in construction, with no moving parts. The motor is composed of a spring and an electromagnet, using alternating current, the electromagnet is turned on and off to form an oscillation, so that the blade vibrates back and forth. Electromagnetic motors usually provide relatively little power, but for occasional use, it may be sufficient.

Pivot motor is driven. A pivot motor is similar to an electromagnetic motor, but it uses two electromagnets and no spring. Using alternating current, the reciprocating motion of the blade is completed by switching on and off the electromagnets on both sides. Typically these clippers have slower blade speeds, but pivot clippers produce at least twice the cutting force of magnetic clippers. So it is easier to trim wet hair while using it. Generally,  professional barbers will use this.

Driven by a rotary motor. The power of this type of hair clipper comes from a rotating motor, and the motor and the cutter head are connected through an eccentric wheel, and the power is transmitted to the cutter head. The center of the eccentric wheel is connected to the output shaft of the motor, and the eccentric nail on the eccentric wheel is placed in the groove of the cutter head so that the circular motion of the motor is converted into the horizontal shearing motion of the cutter head through the eccentric wheel. Finally, achieve the purpose of shaving hair. Rotary motors are available with both AC and DC power, allowing them to be powered from batteries. Usually, the price is higher, but it is more convenient to use and the quality is good.

In order to improve competitiveness, each designer also strives to innovate and solve the pain points of users. For example, the most annoying thing about getting a haircut in hot weather is the broken hair on the neck, which is very itchy. Like this men's hair clipper in Xiaomi's ecological chain, in addition to some functions of ordinary hair clippers in the market, it also adds the function of automatically absorbing broken hair. It can suck the broken hair into the hair clipper while cutting the hair so that after the hair is cut, the broken hair will not be tied to the neck, and the broken hair will not be scattered everywhere on the ground.

I have to say this is a great idea. In fact, the principle is not complicated, that is, a motor with a speed of tens of thousands of rpm is built into it. After it is turned on, the broken hair can be sucked into the hair-cutting chamber through the hair-cutting channel. After the hair is cut, the hair-cutting chamber can be directly disassembled Just rinse with water.

Although the principle is simple, these functions have brought great convenience to our life, which is beyond the reach of ordinary hair clippers.

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