An electromagnetic exciter and a screen sounding device

An electromagnetic exciter and screen technology, applied in the direction of sensors, electrical components, etc., can solve problems such as unstable vibration, small driving force, and poor heat dissipation of coils, so as to avoid nonlinear phenomena, reduce radiation sound distortion, and indicate low temperature Effect

Active Publication Date: 2018-12-21
GOERTEK INC
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the magnetic field utilization rate of this electromagnetic actuator is low, and the driving force is small
[0005] In addition, the driving force changes nonlinearly with the displacement of the vibrator,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An electromagnetic exciter and a screen sounding device
  • An electromagnetic exciter and a screen sounding device
  • An electromagnetic exciter and a screen sounding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an electromagnetic exciter and a screen sounding device. The exciter includes a housing, a vibrator assembly and a stator assembly, The stator assembly and the vibrator assembly are housed in the housing, the vibrator assembly is suspended in the housing through an elastic element, the vibrator assembly comprises a coil and a core post arranged in the coil, the vibrator assembly is located in a magnetic field of the stator assembly, and the stator assembly comprises a Helbeck permanent magnet array.

Description

technical field [0001] The invention relates to the technical field of electroacoustic conversion, and more particularly, to an electromagnetic exciter and a screen sound generating device. Background technique [0002] In order to increase the screen-to-body ratio (ie, the ratio of the screen area to the front area) of electronic products such as mobile phones, it has become a development trend to cancel the handset. In some solutions, the earpiece is replaced by a screen sound device. The screen sound generating device usually includes a screen body and an electromagnetic exciter arranged on the screen body. The electromagnetic exciter vibrates, thereby driving the screen body to vibrate to emit sound. [0003] Existing electromagnetic exciters usually include a stator, a vibrator and a casing. The stator includes coils. The vibrator includes a permanent magnet and a mass connected together. The vibrator is suspended in the cavity of the housing through the shrapnel. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04R9/06H04R9/02
CPCH04R9/02H04R9/06
Inventor 祖峰磊杨鑫峰
Owner GOERTEK INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap