Linear vibrator device

A linear vibration and device technology, applied in the direction of sensors, electrical components, etc., can solve the problems of sharp frequency response curve, loud noise, and increased voltage, and achieve the effects of enhanced reaction force, increased withstand power, and suppressed resonance amplitude

CN101365256AInactive Publication Date: 2009-02-11瑞声声学科技(常州)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2009-02-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a vibrator, in particular to an electric-acoustic transformation acoustic generator with the function of vibration. A magnetic fluid is arranged at the bottom of a bowl-shaped magnetizer. A protruding elastic damping balance is arranged in the corresponding position of the magnetic fluid on a bottom cover. The elastic damping balance and a vibration unit with magnetic fluid are propped against each other in the vibration state, so as to overcome the disadvantage of small damp in a miniature electric-acoustic generator in the related technology, enable the resonance amplitude to be inhibited when the miniature electric-acoustic generator works, increase the voltage to be borne by the miniature electric-acoustic generator and widen the effective frequency band of the miniature electric-acoustic generator. Therefore, the resonance amplitude is inhibited, so that the collision of the inner parts of the acoustic generator can be avoided, and the power to be borne by the invention is increased. Besides, the counterforce is strengthened when the resonance happens, so that the effective frequency band of the electric-acoustic transformation acoustic generator gets wider.
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Description

Technical field

[0001] The invention relates to a miniature vibrator, in particular to an electroacoustic conversion sound generator with vibration function.

Background technique

[0002] In a traditional portable electronic device, such as a mobile phone, the three functions of incoming call sound prompt, incoming call vibration prompt and telephone voice output need to be completed by three independent devices. Among them, a simple music sounder or a loudspeaker with a wider frequency response range is used to perform the sound prompt function of an incoming call; a micro DC vibration motor is used to perform the vibration prompt function; the voice output function of the telephone is completed by a receiver. However, the development trend of mobile phones is to be short, light and thin, and the more components there are, the more unfavorable it is to reduce the size of the mobile phone. Therefore, the various components inside the mobile phone are integrated to confo...

Examples

Embodiment Construction

[0021] The linear vibrating device of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] as attached figure 2 As shown, the linear vibrating device of the present invention has the function of vibration prompt, sound prompt or voice output, and it includes a casing composed of a gland 10, a basin frame 20 and a matching bottom cover 30, and the upper end of the basin frame 20 supports a diaphragm 40 , and the voice coil 41 connected to the diaphragm 40, the diaphragm 40 is provided with a gland 10 used with the frame 20, and the gland 10 presses the diaphragm 40 against the frame 20; the frame 20 is also provided with The limit device that has, described limit device refers to spring plate 60, and spring plate 60 is annular, and it is provided with outer ring, inner ring and the rib (not shown on the figure) that connects inner and outer ring; Spring plate 60 sets The bowl-shaped magnetizer 50, the bowl-shaped magn...