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Magnetic circuit assembly and miniature sounder provided with the magnetic circuit assembly

A sounder and component technology, applied in the direction of sensors, electrical components, etc., can solve the problems that are unfavorable to the development of light and thin portable electronic equipment, the weight of the miniature sounder, and the unfavorable heat dissipation of the magnet, so as to improve the heat dissipation effect, reduce the weight, and facilitate heat dissipation Effect

Active Publication Date: 2020-11-24
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. It is not conducive to the heat dissipation of the magnet, and the heat dissipation effect is poor;
[0005] Second, the magnetic flux is small and the sensitivity is poor;
[0006] 3. The weight of the miniature sounder is large, and it takes up a lot of space, which is not conducive to the development of light and thin portable electronic equipment

Method used

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  • Magnetic circuit assembly and miniature sounder provided with the magnetic circuit assembly
  • Magnetic circuit assembly and miniature sounder provided with the magnetic circuit assembly
  • Magnetic circuit assembly and miniature sounder provided with the magnetic circuit assembly

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Such as figure 1 and figure 2 Commonly shown, a magnetic circuit assembly 40 includes a magnetic yoke 42, and the middle part of the magnetic yoke 42 is provided with an opening 420 that penetrates the magnetic yoke 42 in the thickness direction. In this embodiment, the magnetic yoke 42 is flat. Structure, the inner side of the magnetic yoke 42 is fixed with a metal sheet 44 whose shape and size are consistent with the shape and size of the magnetic yoke 42. The material of the metal sheet 44 has magnetic permeability, and can also play the role of magnetic conductivity. The thickness of the metal sheet 44 is smaller than that of the magnetic yoke 42 , and in this embodiment, the thickness of the metal sheet 44 is preferably 0.05mm˜0.1mm.

[0041] Such as figure 1 and figure 2 Commonly shown, a magnet 460 is fixed on the central part of the metal sheet 44, a magnetic guide plate 480 is fixed on the magnet 460, side magnets 462 are respectively fixed on the four sid...

Embodiment 2

[0048] A miniature sounder, comprising a housing, a vibrating assembly and a magnetic circuit assembly housed in the housing, the magnetic circuit assembly is the magnetic circuit assembly described in Embodiment 1, the miniature sounder can be an integrated loudspeaker module, or it can be It is a loudspeaker monomer, and the following takes the loudspeaker module as an example to describe the miniature sound generator of the present invention in detail:

[0049] Such as image 3 , Figure 4 and Figure 5 Commonly shown, an integrated speaker module includes a casing, and the casing includes a first casing 10, a second casing 20 and a third casing 30 sequentially combined, the first casing 10, the second casing 20 The vibration assembly 50 and the magnetic circuit assembly 40 are accommodated in the space enclosed by the third casing 30 . The vibration assembly 50 includes a diaphragm 52 whose edge is fixed on the end face of the combination of the second housing 20 and th...

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Abstract

The invention discloses a magnetic circuit component and a mini-sized sounder provided with the magnetic circuit component, and relates to the electroacoustic product technology field. The magnetic circuit component comprises a magnetic conductive yoke, the middle part of which is provided with a hole penetrating the magnetic conductive yoke in a thickness direction. The magnetic conductive yoke is fixedly provided with a magnetic conductive metal thin sheet, and the thickness of the metal thin sheet is smaller than the thickness of the magnetic conductive yoke. The middle part of the metal thin sheet is fixedly provided with a magnet, and the magnet is fixedly provided with a magnetic conductive plate. By adopting the magnetic circuit component and the mini-sized sounder provided with the magnetic circuit component, the technical problems of the conventional sounders of the prior art such as poor heat dissipation performance and heavy weight are solved. The magnetic circuit component and the mini-sized sounder provided with the magnetic circuit component have advantages of high sensitivity, good heat dissipation performance, long service lifetime, light weight, small occupied space, and ability of facilitating thinning development of portable electronic equipment.

Description

technical field [0001] The invention relates to the technical field of electroacoustic products, in particular to a magnetic circuit assembly and a miniature sounder provided with the magnetic circuit assembly. Background technique [0002] Miniature sound generator is an important acoustic component of portable electronic equipment, which is used to complete the conversion between electrical signals and sound signals, and is an energy conversion device. The micro sounder usually includes a shell and a vibration component and a magnetic circuit component contained in the shell. The magnetic circuit component includes a magnetic yoke, and the inner center of the magnetic yoke is sequentially fixed with a magnet and a magnetic plate; the vibration component includes a diaphragm and a voice coil. , the voice coil surrounds the outer periphery of the magnet and the magnetic guide plate, and moves up and down along with the alternating audio signal passing through it, so as to dr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/02H04R9/06
CPCH04R9/022H04R9/025H04R9/06
Inventor 张庆一刘旭东霍新祥陈钢
Owner GOERTEK INC
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