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Miniature moving coil type energy transducer

A moving-coil, transducer technology, applied in the direction of sensors, electrical components, etc., can solve the problems of difficult output performance improvement, magnetic performance limitation, noise and other problems, and achieve the effect of improving output performance, improving magnetic performance, and realizing miniaturization.

Active Publication Date: 2012-02-08
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In this conventional micro-moving-coil converter, when vibrating, the center of the vibrating piece 1 corresponds to the inner protrusion formed by the washer 31 and the magnet 32. When the vibration amplitude is large, it is easy to cause the central area of ​​the vibrating piece to be in contact with the inner protrusion formed by the magnet 32. The inner protrusions collide and generate noise, resulting in poor acoustic performance, which is not conducive to the miniaturization of the miniature moving coil transducer, and the magnetic properties of products with this traditional structure are limited to a certain extent, and it is difficult to further improve the output performance
Similarly, if the vibrating plate 1 adopts rigid components, the actuator function can be realized, and this known actuator structure will also produce the above-mentioned defects.

Method used

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  • Miniature moving coil type energy transducer
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  • Miniature moving coil type energy transducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] figure 1 It is an exploded perspective view showing the specific structure of the miniature moving coil transducer related to Embodiment 1 of the present invention; figure 2 express figure 1 Schematic diagram of the cross-sectional structure of the miniature moving coil transducer shown. Such as figure 1 and figure 2 As shown, the miniature moving coil transducer in the first embodiment has a rectangular structure, including a vibration system, a magnetic circuit system, and a casing 5 that accommodates the vibration system and the magnetic circuit system.

[0028] The magnetic circuit system is a double magnetic circuit structure that can provide a large magnetic force, and it includes from top to bottom the inner Huashi 411, the inner magnet 421, the outer Huashi 412, the outer magnet 422 and the magnetic guide plate 43, of which the inner Huashi 411, The inner magnet 421, the outer magnet 412, and the outer magnet 422 are combined with the magnetically condu...

Embodiment 2

[0038] Below, refer to Figure 6 The specific structure of the miniature moving coil transducer involved in the second embodiment of the present invention will be described.

[0039] Figure 6 It is a schematic cross-sectional structure diagram showing the miniature moving coil transducer related to the second embodiment of the present invention. Such as Figure 6 As shown, the miniature moving coil transducer involved in the second embodiment also includes a vibration system composed of a vibrating piece 1 and a flexible circuit board 2, a magnetic field combined with a top-down washer, a magnet, and a magnetically conductive plate. circuit system and housing 5 for containing the above-mentioned vibration system and magnetic circuit system.

[0040] The main difference between the second embodiment and the above-mentioned embodiment is that the structure of the magnetic circuit system is different. The magnetic circuit system in the second embodiment is an external magneti...

Embodiment 3

[0044] Below, refer to Figure 7 The specific structure of the miniature moving coil transducer involved in the third embodiment of the present invention will be described.

[0045] Figure 7 It is a schematic diagram showing the cross-sectional structure of the miniature moving coil transducer related to the third embodiment of the present invention. Such as Figure 7 As shown, the miniature moving coil transducer involved in the third embodiment also includes a vibration system composed of a vibrating plate 1 and a driving device, a magnetic circuit system composed of a washer combined from top to bottom, a magnet and a magnetic guide plate And the shell 5 that accommodates the vibration system and the magnetic circuit system above, the magnetic circuit system is a double magnetic circuit structure, and the inner protrusion formed by the inner Huasi 411 and the inner magnet 421 at the center of the magnetic guide plate 43 and the inner protrusion formed by the outer Huasi ...

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Abstract

The invention provides a miniature moving coil type energy transducer. The miniature moving coil type energy transducer comprises a vibrating system, a magnetic circuit system and a shell, wherein the shell is used for fixing the vibrating system and the magnetic system and forms an outer frame of the miniature moving coil type energy transducer, the vibration system consists of a vibrating reed and a driving device which is combined together with the vibrating reed and positioned in a magnetic gap formed by the magnetic circuit system, and an additional concentrating flux plate is further arranged on the vibrating system and positioned in the magnetic gap formed by the magnetic circuit system. Compared with the prior art, the invention has the beneficial effects that the deficiencies of the traditional miniature moving coil type energy transducer can be effectively improved, the thickness of the product can be further reduced, the design miniaturization of the miniature moving coil type energy transducer products can be realized, the magnetic property of the miniature moving coil type energy transducer can be improved, and the output property of the product can be enhanced further.

Description

technical field [0001] The invention relates to the technical field of miniature moving coil transducers, in particular to a miniature moving coil transducer capable of reducing product thickness and improving magnetic properties. Background technique [0002] With the development of portable terminal consumer electronic products, a large number of transducer devices, especially miniature dynamic transducers, have been widely used. The working principle of the well-known miniature moving coil transducer is that the driving device with alternating current is forced in the magnetic field, so that the vibration system of the moving coil transducer vibrates in the vertical direction to generate sound or actuation. [0003] Figure 9 It is a schematic cross-sectional structure diagram of an existing miniature moving-coil transducer for sound generation. Such as Figure 9 As shown, the miniature moving coil transducer includes a vibration system, a magnetic circuit system and a h...

Claims

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Application Information

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IPC IPC(8): H04R9/06H04R9/02
Inventor 江超杨健斌
Owner GOERTEK INC