a linear vibrator

Abstract

The present invention provides a linear vibrator including a housing, a vibrator, a coil and a circuit board. The housing includes an upper housing and a lower housing. The upper housing and the lowerhousing cover enclose an internal space. The vibrator is fixedly installed on an inner wall of the upper housing. The vibrator includes a mass body and a spring. The spring is located at the periphery of the mass body. A lead of the coil is welded on the circuit board, and the coil and the circuit board are fixedly installed on an inner wall of the lower housing. One end of the circuit board is inside the housing, and the other end extends from the housing. The circuit board is provided with a power input pad and a driving IC. A part of the driving IC is installed inside the housing, and theother part is installed outside the housing. The linear vibrator provided by the invention has the advantages of high universality, a long service life, low noise, quick start, strong and stable vibration force, strong anti-interference performance and a small volume.

Description

technical field [0001] The invention relates to a vibrator, in particular to a linear vibrator. Background technique [0002] In the prior art, vibrators used in mobile phones and some mobile electronic products are generally hollow cup motors and flat motors. Since hollow cup motors are cylindrical, they cannot be made very thin, and flat motors can be made very thin. But the vibration intensity will be weakened, and they all have an Achilles' heel, which needs to send electricity to the rotor through the brush, which will shorten the service life of the vibrator or make the noise loud. [0003] Chinese invention patent (201210067388.8: Vibrator) discloses a vibrator, which includes: a housing with an inner space; a coil fixedly mounted on the side wall of the housing, the coil has a cylindrical shape, so that The magnet is placed in the coil, and the coil is arranged on the edge of the lower housing; the elastic member is fixedly installed on the housing to be placed in t...

AI Technical Summary

Problems solved by technology

First of all, although the vibration intensity of the vibrator is strong, the mass body is moving vertically, so the mass body cannot be made very thin, otherwise the mass body will be damaged, so the vibrator will be thicker and the volume will be larger. Secondly, the vibration The use of damping components in the vibrator to reduce noise, although it has played a certain role, but the addition of damping components makes the structure of the vibrator complex, the volume becomes larger, and the cost increases accordingly

In addition, there is no driver IC on the circuit board of the vibrator, so it needs to be reprogrammed when it is used in mobile phones or other products, and it cannot be used directly after installation, and the versatility is not strong

[0004] Chinese invention patent (207270065772.2: vibrator) discloses a vibrator, comprising: a housing with an inner space; a vibration generating part installed in the housing and generating vibration by power supplied to the vibration generating part; a resonance part , to resonate through the vibration generated in the vibration generating part; wherein, the housing is in the shape of "8" and has: a first space part in which the vibration generating part is installed; a second space part , connected to the first space part, and the resonant part is installed in the second space part; the vibration generation part includes a magnet, a circuit board, a first weight member, a circuit board, a first weight member, The first installation member, the coil and the first elastic member, one end of the circuit board is led out to the outside of the housing, and the other end of the circuit board is connected to the coil; the magnet is fixedly installed in the central part of the first space part ; Although the vibrator can amplify the vibration generated in the vibration generating part by utilizing the resonance part, the vibration can be enhanced under the same situation of power consumption, but when the elastic member and the vibrating part vibrate in the vibrator, the elastic member and the shell The inner wall of the body is in direct contact with the weight member, which will generate severe vibration and cause loud noise, and the mass body is a hollow cylindrical structure, the mass body should not be too thin, otherwise the vibration effect will be affected, resulting in a larger volume

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