Bistable electromagnetic driver and product with the same

Abstract

The present invention provides a bistable electromagnetic driver and a product with the same. The electromagnetic driver comprises the following components: a first permanent magnet (301); a second permanent magnet (302) which is equipped relatively to the first permanent magnet (301) and has same polarity with the first permanent magnet; a movable member (303) which is provided between the first permanent magnet (301) and the second permanent magnet (302) and is wound by excitation coil (304), wherein through exerting current with different directions to the excitation coil (304), the movable member (303) can move between the first permanent magnet (301) and the second permanent magnet (302). The bistable electromagnetic driver provided by the invention has the advantages of good stability and low energy consumption.

Description

technical field [0001] The invention relates to an electromagnetic driver, and in particular to a high-efficiency and energy-saving bistable electromagnetic driver. Background technique [0002] figure 1 A traditional electromagnetic driver is shown, which includes: a movable part 11, a fixed part 12, a spring 13 connected between the movable part 11 and the fixed part 12, and an excitation coil 14 located in the fixed part, wherein, Both the movable part 11 and the fixed part 12 are made of magnetic materials. When the exciting coil 14 is charged, the movable part 11 and the fixed part 12 are attracted to each other; when the exciting coil 14 is not powered, the movable part 11 and the fixed part 12 are separated under the elastic force of the spring 13 . Therefore, in order to keep the movable part 11 and the fixed part 12 of the electromagnetic driver in the engaged state, the excitation coil 14 must be continuously powered, but its power consumption cannot be ignored. ...

AI Technical Summary

Problems solved by technology

[0007] (2) Due to the excessive number of ampere-turns required, the energy consumption of the excitation coil is too large

Especially for the traditional electromagnetic driver, if it is necessary to keep the movable part and the fixed part in the state of attraction, the excitation coil must be continuously powered, and the energy consumption generated by this is quite huge

[0008] (3) Due to the excessive number of ampere-turns required, the temperature of the excitation coil will increase significantly during the excitation process, thereby increasing the volume of the excitation coil

[0009] (4) The magnetic force generated by the excitation coil needs to overcome the elastic force of the spring, which obviously increases the power consumption

[0014] To sum up, the above-mentioned electromagnetic drives all suffer from the defects of high energy consumption and poor stability.

Images