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An actuator and a screen sounding device

An exciter and housing technology, applied in the direction of sensors, loudspeakers, electrical components, etc., can solve the problems of high product power consumption, increased product material cost, and increased magnets, etc., to achieve high magnetic field utilization and low power consumption. Effect

Active Publication Date: 2018-12-18
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the magnetic field utilization efficiency of the existing exciter is low, and the power consumption of the product is high. Simply increasing the number of magnets, or simply increasing the number of magnets, will increase the cost of product materials and reduce product competitiveness

Method used

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  • An actuator and a screen sounding device
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  • An actuator and a screen sounding device

Examples

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Embodiment Construction

[0034] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0036] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0037] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses an exciter and a screen sounding device. The exciter comprises a housing, a vibrator assembly and a stator assembly. The interior of the housing forms a receiving cavity. The vibrator assembly comprises a vibrating portion and an elastic portion. The vibrating portion is suspended in the receiving cavity through the elastic portion. The vibrating portion comprises a first permanent magnet magnetized parallel to the vibration direction, and the first permanent magnet forms a middle avoiding space. The stator assembly includes a magnetically conductive core and a coil wound around the periphery of the magnetically conductive core, the magnetically permeable core portion is fixed in the accommodating cavity, the magnetically permeable core portion includes a support portion and a radial protrusion portion provided at one end of the support portion, the other end of the support portion is connected with the housing, a coil is wound outside the support portion and positioned between the housing and the radial protrusion portion, and the coil is positioned in the middle avoiding space and spaced apart from the vibration portion.

Description

technical field [0001] The invention relates to the technical field of electroacoustic conversion, and more particularly, to an exciter and a screen sound generating device. Background technique [0002] Electronic terminals with full screens are becoming more and more popular. In order to increase the screen-to-body ratio, the front of the electronic terminal needs to be designed to be non-porous, that is, to cancel the hole-like structures such as the sound hole of the earpiece and the photosensitive hole of the camera. In some design schemes of the sound generating device, a piezoelectric device is placed on the middle frame, and the vibration of the piezoelectric device drives the screen and the front case of the electronic terminal to vibrate, thereby radiating sound. [0003] In other schemes, the stimulators are set on the screen. The vibration of the exciter drives the screen to vibrate and produce sound, and the exciter can realize a non-porous screen design while...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/06H04R9/02
CPCH04R9/025H04R9/06H04R2400/11
Inventor 史德璋毛东升朱跃光刘春发
Owner GOERTEK INC
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