Electric massager uses electricity to vibrate the massage head, the health appliances that massage the human body. Massage is conducive to relaxing tendons and promoting blood circulation, eliminating fatigue and preventing and controlling diseases. Electric massager is divided into electromagnetic and motor types by vibration mode: bodybuilding, sports and medical use.
Electromagnetic massager is mainly composed of iron core (including fixed core and movable core), coil, vibration spring sheet and massage head on the fixed core coil connected to the AC current to produce alternating sense field, vibration under the action of magnetic field and vibration massage head repeated vibration. The vibration frequency 2 is generally 100Hz, and the input power is 10~ 15W. The method to change the vibration strength is to change the core gap or current strength, one is to change the vibration frequency.
The motor-type massager mainly consists of electric motor, spring shaft, spring, eccentric wheel and massage head. The small DC motor drives the eccentric wheel to rotate at a high speed through the spring shaft, and the eccentric wheel makes the massage head vibrate. The motor is generally permanent magnet DC, with power of 5~ 8W, and speed of 6000 r/min; AC-DC series motor can also be used, with speed usually 5000~ 10000r / min. Because the vibration of the massage head is directly affected by the eccentric wheel, the vibration frequency value of the massage head is the speed value of the motor. Changing the speed of the motor can adjust the strength of the massage force. The structure of the motor massager has a great impact on the massage effect. In order to ensure good movement and noise reduction, the flexible connection between the massage head and the motor shaft should be accurate and reliable, the spring shaft elasticity is appropriate, and the shaft and bearing cooperate and lubrication is moderate. Electric massager is a kind of household appliance that stimulates the part of the human body with mechanical vibration. It has the effect of dredging meridians, harmonizing qi and blood, calming and relieving pain, promoting blood circulation, relieving fatigue and adjusting the body function.
