Vibrator and mobile communication terminal with vibator

Abstract

Provided is a vibration generating device and mobile communication terminal thereof. The vibration generating device includes a first magnet disposed on the top of the bottom board; a vibration board arranged on the top of the first magnet and separated a certain distance from the magnet; a second magnet disposed on the bottom the vibration board and corresponded with the first magnet; an elastic component connected with the bottom board and the vibration board, for controlling the movement of the vibration board based on the repulsion force and attraction force of the magnets. The device of the invention improves the structure of the vibration generating device wherein the vibration is generated by the lift and the descent of the vibration board, therefore increasing the vibration intensity, decreasing the heating caused by the interior friction, eliminating the vibration noise, enhancing the durability, and adjusting the vibration number and vibration intensity.

Description

technical field [0001] The present invention relates to a vibration generating device, in particular to a mobile communication terminal, in particular to a vibration generating device and a mobile communication terminal which generate vibration by using the repulsive and attractive forces crossed between permanent magnets and electromagnets. Background technique [0002] Generally, a mobile communication terminal generates an audio signal to notify the outside of an incoming call or message reception. However, the generation of the above-mentioned audio signal causes noise to the surroundings, and the user cannot hear the audio signal in a noisy surrounding environment. For this reason, the mobile communication terminal is equipped with a vibration generating device in order to notify the user of an incoming call or short message reception with vibration. The above vibration device is a vibration motor including an eccentric rotating body. [0003] FIG. 1 is an internal pla...

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Problems solved by technology

[0009] However, when the existing vibration motor 10 is used for a long time, the above-mentioned rotating shaft 20 is bent, so it cannot rotate normally and malfunctions. The polarity needs to be provided with the brush 19 and the adapter 29 and causes the increase of production cost, and the increase of parts such as the brush 19 and the adapter 29 causes the miniaturization of the size of the vibration motor 10 to be limited, and is equipped with the above-mentioned vibration motor 10 The miniaturization of mobile communication terminals is also limited

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