Cylinder type linear vibration motor for portable communication device

Abstract

A cylinder type linear vibration motor for a portable communication device is provided to eliminate needs of a rotator and a brush, thereby lowering manufacturing costs. Both ends of a case are opened. Two bushes seal both ends of the case. Two elastic units are supported by two bushes. A weight is elastically supported by one of the elastic units. A magnet is supported in one of the elastic units. A coil assembly surrounds the magnet.

Description

technical field [0001] The invention relates to a motor used in a mobile communication device, in particular to a cylinder type linear motor with variable vibration for the mobile communication device. Background technique [0002] The mobile phone is a commonly used mobile communication device, which usually uses the prompt sound to prompt the user to call out the signal, but because the prompt sound cannot be used in public places such as theaters, it is switched to the vibration mode for use; on the other hand, the previous mobile phone input method is to use However, the screen input method of the mobile phone is being converted to a touch screen input method recently. Therefore, it is the main trend of technological development to use the vibration method to correctly remind the user of the correctness of the operation; however, the vibration of the vibration motor is used to remind the key press Action or vibration mode, most of the vibration motors with such functions...

AI Technical Summary

Problems solved by technology

At this time, the weight (68) of the above-mentioned rotator (64) is heavier than the position where the coil (67) is set, and causes vibration under the action of eccentric force. At this time, the mobile phone with a flat vibration motor will cause vibration; Flat type and column type vibration motors use the eccentric force generated from the rotational force to vibrate. Therefore, sufficient vibration cannot be generated until a certain rotational force is reached, and it takes time to stop the vibration, which cannot meet the rapidly increasing usage of touch-screen mobile phones. Therefore, the use of vibration motors that can increase the effect of vibration force has been proposed; however, the above-mentioned flat vibration motor and the use of vibration motors that can increase the effect of vibration force are due to their structural Due to the limitation of size, there is a common problem of small vibration, so when the mobile phone using the vibration motor is placed in the pocket of the clothes, the user cannot feel the shortcomings of receiving and exhaling and cannot respond in time.

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