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Speaker device

A loudspeaker and magnetic pole technology, applied in sensors, electrical components, etc., can solve the problems of high manufacturing workload and high manufacturing cost

Inactive Publication Date: 2011-05-11
PIONEER CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Moreover, the above-mentioned loudspeaker 1J has relatively high manufacturing costs and a large amount of manufacturing work because the number of constituent parts is relatively large.

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0049] figure 2 It is a figure for demonstrating the speaker device 1 which concerns on 1st Embodiment of this invention. In detail, figure 2 (A) is a front view of the speaker device 1 according to the first embodiment of the present invention, figure 2 (B) is figure 2 (A) A cross-sectional view of the speaker device 1 along the line A-A'.

[0050] Such as figure 2 (A), figure 2 As shown in (B), the speaker device 1 according to the first embodiment of the present invention includes a magnetic circuit 2 , a vibrating body 3 , and a support member (frame) 4 . image 3 (A) is for illustration figure 2 (A), figure 2 (B) is a cross-sectional view showing the operation of the speaker device 1, image 3 (B) is a diagram for explaining the operation of the conductive portion 335 of the vibrating plate 33 .

[0051] The magnetic circuit 2 corresponds to one embodiment of the magnetic circuit according to the present invention, the vibrating body 3 corresponds to one ...

no. 2 Embodiment approach

[0111] Figure 7 (A) is a front view of the speaker device 1A according to the second embodiment of the present invention. Figure 7 (B) is Figure 7 (A) A cross-sectional view of the speaker device 1A along the line A-A'. Description of the same configuration as that of the first embodiment is omitted.

[0112] The speaker device 1a according to the present embodiment has a diaphragm 33A made of a non-conductive material and a conductive portion 335 made of a conductive material on both or one of the front and back surfaces of the diaphragm 33A.

[0113] Specifically, non-conductive materials such as paper, polyimide, polyetherimide, and resin films can be used as the forming material of the vibration plate 33A, for example.

[0114] Conductive part 335 such as Figure 7(A), Figure 7 As shown in (B), it is formed in a ring shape, and both or one of the front surface and the back surface of the vibration plate 33A is formed in a ring shape along the circumferential direc...

no. 3 Embodiment approach

[0119] Figure 8 It is a sectional view of the speaker device 1B according to the third embodiment of the present invention. Descriptions of the same configurations as those of the first and second embodiments are omitted. exist Figure 8 The axisymmetric left half of the center speaker device 1B is omitted.

[0120] Such as Figure 8 As shown, the speaker device 1B according to this embodiment is an external magnet type magnetic circuit. Specifically, speaker device 1B includes magnetic circuit 2B, vibrator 3 , and support member (frame) 4 .

[0121] The magnetic circuit 2B has a yoke 21B, a magnet 22B, and a thin plate 23B. In the yoke 21B, the flat bottom surface portion 211 and the electrode portion 214 formed in the central portion are integrally formed.

[0122] The magnet 22B is formed in a ring shape, and is disposed on the bottom surface portion 211 of the yoke 21B.

[0123] The thin plate 23B is formed of a magnetic body, has an annular shape, and is arranged ...

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PUM

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Abstract

A speaker device in which a diaphragm and a voice coil can oscillate in about the same phase, a speaker device with a relatively high sound pressure and a high sound quality, and a thin high-sound-quality speaker device. A speaker device (1) comprises an oscillator (3) in which a voice coil (31) is supported by a portion of a diaphragm (33) and a magnetic circuit (2) in which a first magnetic pole portion (MP1) (plate (23)) having a magnet (22) and a second magnetic portion (MP2) (yoke (21)) having a magnetic pole different from that of the first magnetic pole portion (MP1) (plate (23)) are disposed apart from each other. The voice coil (31) is disposed between the first magnetic pole portion (MP1) and the second magnetic pole portion (MP2). In the oscillator (3), a conductive portion (335) is formed in a portion or all of the diaphragm (33) near the voice coil (31). The conductive portion (335) is disposed between the first magnetic pole portion (MP1) and the second magnetic portion (MP2).

Description

technical field [0001] The present invention relates to a loudspeaker device. Background technique [0002] There is known a dynamic speaker in which when a signal current is applied to a moving coil placed in a static magnetic field, the moving coil vibrates and the diaphragm vibrates the dynamic speaker (for example, refer to Patent Document 1). A general dynamic speaker 1J such as figure 1 As shown, it has a magnetic circuit 2J and a vibrating body 3J. In the magnetic circuit 2J, a magnet 22J is disposed on a yoke 21J having a U-shaped cross section, a thin plate 23J is disposed on the magnet 22J, and a magnetic gap is formed between the thin plate 23J and the yoke 21J. Voice coil 31J is arranged in the magnetic gap, and voice coil 31J is joined to voice coil bobbin 32J, voice coil bobbin 32J is joined to diaphragm 33J, and the outer periphery of diaphragm 33J is joined to frame 35J via edge 34J so as to be free to vibrate. [0003] Patent Document 1: Japanese Patent L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/02H04R9/04H04R9/00
CPCH04R9/025H04R9/043H04R2209/022
Inventor 汤瀬和干小林博之高山浩治古头晶彦新寺晋太郎引地俊博
Owner PIONEER CORP