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Electroacoustic transducing device

A frame and magnetic circuit technology, applied in the direction of sensors, electrical components, circuit lead arrangement/elimination, etc., can solve the problems of reduced acoustic performance and large impact on the vibration system, achieving the effect of small impact and preventing the reduction of acoustic performance

Inactive Publication Date: 2014-05-07
HOSIDEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned prior art, since there is no support for the lead wire of the voice coil, if the lead wire is only pulled to a predetermined position without tension, the influence on the vibration system is large, resulting in a decrease in acoustic performance.

Method used

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  • Electroacoustic transducing device
  • Electroacoustic transducing device
  • Electroacoustic transducing device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0023] refer to Figure 1 ~ Figure 4 The first embodiment will be described. figure 1 It is a perspective view of the frame of this embodiment.

[0024] figure 1 The shown frame 1 is formed by pressing (drawing) a thin plate-like metal material to form a shallow bottomed bottom plate 2 provided with a quadrangular bottom plate 2 and side walls 3 standing vertically from its outer peripheral edge. In a square cylindrical shape, the bottom plate 2 is subjected to slitting and bending processing, four positions on the outer side of the bottom plate 2 are cut, and a quadrangular frame with a bottom is formed on the inside of the side wall 3. The yoke part 4 is such that the yoke and the frame 1 are integrally formed.

[0025] The yoke portion 4 is composed of four yoke side walls 5A, 5B, 5C, 5D and a quadrilateral yoke bottom plate 6, wherein the four yoke side walls 5A, 5B, 5C, 5D are defined by The space between them faces the inner side of the side wall 3, and the yoke base...

no. 2 approach

[0052] refer to Figure 5 ~ Figure 7 A second embodiment will be described. Figure 5 It is a perspective view of the frame of this embodiment.

[0053] Figure 5 The shown frame 41 is formed by pressing (drawing) a thin plate-like metal material into a shallow strip provided with a circular bottom plate 42 and side walls 43 vertically rising from the outer periphery thereof. The bottom is cylindrical, and the bottom plate 42 is subjected to slitting and bending processing, and three positions on the outer side of the bottom plate 42 are cut to form a circle with a bottom frame on the inside of the side wall 43. The yoke part 44 is such that the yoke is integrated with the frame.

[0054] The yoke portion 44 is composed of three yoke side walls 45A, 45B, 45C and a circular yoke bottom plate 46, wherein the three yoke side walls 45A, 45B, 45C are curved in an arc shape with a predetermined The space is opposed to the inner side of the side wall 43 , and the circular yoke bo...

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PUM

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Abstract

According to the invention, in an electroacoustic transducing device comprising: a magnetic circuit 13 having a yoke 4, a magnet 11, and a pole piece 12; a vibration system 16 having a diaphragm 14 and a voice coil 15; and a frame 1 which holds the magnetic circuit 13 and the vibration system 16, the voice coil 15 being placed in a magnetic gap 30, lead wires 17, 18 of the voice coil 15 are drawn out from the voice coil 15 at positions which are remote from the diaphragm 14, and openings 7A, 7B for air forming for forming slack portions 31, 32 in the lead wires 17, 18 drawn out from the voice coil 15 are disposed in the frame 1. The lead wires 17, 18 are adequately subjected to the wire laying process, and the audio performance is prevented from being lowered.

Description

technical field [0001] The present invention relates to a small and thin electroacoustic transducer such as a speaker and a receiver used in a mobile phone or the like. Background technique [0002] This electroacoustic transducer has a magnetic circuit, a vibration system and a frame, and is configured by disposing a voice coil (voice coil) in a magnetic gap (magnetic gap), wherein the magnetic circuit has a yoke, a magnet ) and a pole piece, the vibration system has a vibration plate and the voice coil, and the frame is used to hold the above-mentioned magnetic circuit and vibration system. Here, the outer peripheral portion of the vibration plate is bonded and fixed to the frame, and placed on the magnetic circuit, and one end of the voice coil formed by winding a wire is bonded and fixed to the vibration plate, and the voice coil is placed in the magnetic gap. . [0003] For the electroacoustic transducer configured in this way, there is a conventional technique in whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/02H04R9/04H04R1/06
CPCH04R1/06H04R2499/11H04R9/04H04R9/02
Inventor 汤浅英夫本永秀典藤田胜也王伟
Owner HOSIDEN CORP