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A Receiver with Reduced Secondary Modal Distortion

A receiver, viscoelastic technology, applied in the field of receivers, can solve the problems of reducing the service life of the receiver, vibration distortion, solder joints between the connecting part and the iron core, etc. degree of effect

Active Publication Date: 2017-11-28
SUZHOU YICHUAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the soft material of the U-shaped armature, the vibrating part at one end of the U-shaped armature is suspended in the inner cavity of the coil and the iron core, and the connecting part at the other end of the U-shaped armature is fixedly connected with the iron core. When vibrating, the vibrating part It is easy to reverse the vibration energy to the connection part, causing vibration distortion, and at the same time causing the solder joints between the connection part and the iron core to fall off, reducing the service life of the receiver

Method used

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  • A Receiver with Reduced Secondary Modal Distortion
  • A Receiver with Reduced Secondary Modal Distortion
  • A Receiver with Reduced Secondary Modal Distortion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 As shown, a receiver that reduces secondary modal distortion includes an electromagnetic shielding shell 1, a diaphragm 2 disposed in the electromagnetic shielding shell 1, an electromagnetic conversion mechanism and a power transmission mechanism 8, and the electromagnetic conversion mechanism passes through the power transmission mechanism 8. The vibration is transmitted to the diaphragm 2, and the electromagnetic conversion mechanism includes a U-shaped armature 7, an iron core 5, a coil 4 and a permanent magnet 6, such as figure 2 As shown, one end of the U-shaped armature 7 is a connecting portion 72, and the other end is a vibrating portion 71. The coil 4 and the iron core 5 are sequentially sleeved on the vibrating portion 71, and the permanent magnets 6 are symmetrically arranged on the upper and lower sides of the vibrating portion 71. They are respectively fixed on the inner surface of the iron core 5 ; the connection part 72 is fixedly conne...

Embodiment 2

[0028] All the other are identical with embodiment 1, and difference is, as Figure 3-4 As shown, the U-shaped armature 7 and the iron core are of an integrated structure, and the two sides of the head 721 of the connecting part 72 are provided with downwardly bent side wings 721, and the side wings 721, the head 721 and the bottom surface of the electromagnetic shielding case 1 form a In the closed cavity, the vibrating part 71 penetrates the cavity.

[0029] The viscoelastic connection layer is a liquid self-adhesive layer, which is respectively bonded to the connection part and the coil, and the viscosity of the self-adhesive layer is 150,000 centipoise.

[0030] The viscoelastic connecting layer is arranged in the middle between the connecting part and the coil. The dimension in the width direction of the viscoelastic connecting layer is half of the dimension in the width direction of the connecting portion, and the dimension in the longitudinal direction of the viscoelas...

Embodiment 3

[0032] The rest is the same as that of Embodiment 1 or 2, except that the viscoelastic connecting layer is a latex layer, and the latex layer is bonded to the connecting part and the coil respectively.

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Abstract

Provided is a receiver decreasing secondary modal distortion. The receiver comprises an electromagnetic shielding casing, and a vibrating diaphragm and an electromagnetic converting mechanism which are disposed inside the electromagnetic shielding casing. The electromagnetic converting mechanism comprises a U-shaped armature, an iron core, a coil, and permanent magnets. One end of the U-shaped armature is a connection portion, while the other end of the U-shaped armature is a vibration portion. The coil and the iron core are successively sleeved on the vibration portion. The permanent magnets are arranged symmetrically on the top side and the bottom side of the vibration portion and fixed on the inner surface of the iron core. The connection portion is fixedly connected with the iron core. A viscoelastic connection layer is arranged between the connection portion and the coil. According to the receiver decreasing secondary modal distortion, the viscoelastic connection layer arranged between the connection portion of the U-shaped armature and the coil may absorb and eliminate vibration conducted to the connection portion when the vibration portion of the armature vibrates so as to decrease secondary modal distortion of the armature and prevent a connecting soldering point between the connection portion of the armature and the iron core from falling caused by vibration.

Description

technical field [0001] The invention relates to a receiver, in particular to a receiver capable of reducing secondary modal distortion. Background technique [0002] The driver part of the receiver is the core device of the whole receiver, and the quality of the driver part determines the quality of the whole receiver. Most of the current armatures use E-shaped armatures. The periphery of the E-shaped armature is used to install in the shell. The rod body in the middle is used as the vibrating part. During use, the vibrating part needs to swing up and down continuously to achieve the driving effect. Therefore, it is particularly important to firmly support the vibrating part. However, the size of the E-shaped armature is relatively large, and its support for the vibrating part is basically concentrated on one connection point, which directly affects the firm support for the vibrating part and affects its stability. [0003] The appearance of the U-shaped armature solves th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/00H04R9/02
Inventor 周巍
Owner SUZHOU YICHUAN TECH CO LTD