Micro linear vibration motor

Abstract

The invention discloses a micro linear vibration motor, comprising a resetting elastic member arranged on a top wall of a main case. The resetting elastic member comprises a fixed part, a resonance part and an elastic connection part; the elastic connection part includes four to six bending connection reeds, and each reed comprises a base segment, a tail segment and an elastic supporting segment; one side end of the base segment of each reed, on the connection part with the fixed part, is provided with a reinforced arc-line-shaped transition area, and the other side end is provided with an arc-line-shaped groove used for improving elasticity; one side end of the tail segment of each reed, on the connection part with the resonance part, is provided with a reinforced arc-line-shaped transition area, and the other side end is provided with an arc-line-shaped groove used for improving elasticity; and the arc-line-shaped transition area of the base segment of each reed and the arc-line-shaped groove of the tail segment of the same reed are positioned on the same side end face of the reed, and the arc-line-shaped groove of the base segment of each reed and the arc-line-shaped transition area of the tail segment of the same reed are positioned on the end face of the other side of the reed. The micro linear vibration motor provided by the invention has the advantages of more reasonable structure and more excellent operational performance.

Description

technical field [0001] The invention belongs to the technical field of vibration motors, in particular to a miniature linear vibration motor. Background technique [0002] Communication apparatuses generally have a call receiving function as one of their basic functions, and the call receiving function needs to be provided with components such as an alert function capable of generating a melody, ringtone, or vibration. [0003] Since the melody or ringtone needs to be transmitted to the outside world through the speaker, it will interfere with others, and it is even strictly forbidden to use it in some special occasions, such as during a meeting, so the vibration function is needed to avoid this situation. In order to have a vibration function, a small vibration motor is usually used to transmit the driving force to the shell of the communication instrument to vibrate it. [0004] Commonly used small vibration motors include cylindrical vibration motors and flat vibration m...

AI Technical Summary

Problems solved by technology

However, the conventional brush-type vibration motor including a commutator has the following problems: During the rotation of the motor, mechanical friction between the commutator and the brushes and electric sparks usually wear the brushes and the commutator, thereby shortening the motor. life span

These linear vibrating motors have just been developed in recent years, and due to cost and usage habits, they have not been used on a large scale. Their structure and reliability are not like traditional brush-type vibrating motors, which have been developed for many years. The market test, so there are many urgent improvements in its structure, so that its manufacturing cost will be lower and its performance will be more excellent.

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