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Speaker and acoustic equipment including the speaker

A loudspeaker and magnetic circuit technology, applied in the field of loudspeakers, can solve the problem that the influence of the main frequency band of peak/sag becomes larger and so on

Active Publication Date: 2012-09-26
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, the influence of the peak / sag caused by the above-mentioned conventional structure on the main frequency band becomes larger

Method used

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  • Speaker and acoustic equipment including the speaker
  • Speaker and acoustic equipment including the speaker
  • Speaker and acoustic equipment including the speaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0050] Hereinafter, speaker 100 in Embodiment 1 will be described using drawings.

[0051] figure 1 It is a figure which shows the outline of the structure of the speaker 100 in Embodiment 1.

[0052]figure 1 (a) is a top view of the speaker 100, figure 1 (b) is shown in figure 1 The A-A' cross-section diagram of (a), figure 1 (c) is shown in figure 1 The diagram of the BB' section of (a).

[0053] figure 2 Yes figure 1 (b) is an enlarged view of the AA' cross section of the speaker 100 shown.

[0054] like figure 2 As shown, the speaker 100 has a diaphragm 101 having a connecting portion 102 , a frame 103 , a cover member 104 , a magnetic circuit 120 having a magnet 105 and a yoke 107 , a voice coil 109 , and a spacer 110 .

[0055] In addition, a metal plate 106 is provided on the magnet 105 , and a voice coil 109 is connected to the diaphragm 101 via a voice coil bobbin 108 .

[0056] The vibrating plate 101 is arranged above the magnetic circuit 120, and at lea...

Embodiment approach 2

[0132] Hereinafter, speaker 200 in Embodiment 2 will be described.

[0133] Figure 9 It is a figure which shows the outline of the structure of the speaker 200 in Embodiment 2.

[0134] Figure 9 (a), (b), (c), and (d) are a plan view, a front view, a rear view, and a right side view of the speaker 200, respectively.

[0135] Figure 10 It is an enlarged view of the AA' cross section of the speaker 200 according to the second embodiment.

[0136] Such as Figure 10 As shown, the speaker 200 has: a vibration plate 201 having a connecting portion 202, a frame 203, a spacer 204, a cover member 205, magnets 206 and 207 magnetized in opposite directions, yokes 208 and 209, a voice coil 210, and Brake cloth 211. Speaker 200 differs from speaker 100 of Embodiment 1 mainly in the following five points.

[0137] (1) The magnetic circuit 220 of the speaker 200 is constituted by the magnets 206 and 207 and the yokes 208 and 209 arranged above and below the diaphragm 201 .

[013...

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PUM

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Abstract

A speaker (100, 200) comprises: a magnetic circuit (120, 220); a frame (103, 203); a coil (109, 210); a diaphragm (101, 201) having a connector (102, 202) for connecting the diaphragm (101, 201) and the frame (103, 203) so that the diaphragm (101, 201) can oscillate in the up-down direction in relation to the frame; and a cover member (104, 205) connected to one lateral end of the frame (103, 203), the lateral direction being the direction orthogonal to the up-down direction, the cover member being disposed so as to cover the diaphragm (101, 201) from above, and the cover member forming an opening (130, 230) for emitting sound between the two lateral ends of the frame (103, 203). The cover member (104, 205) has, on the closed end side, a spacer (110, 204) for reducing the volume of the space on the closed end side above the diaphragm (101, 201) and below the cover member (104, 205).

Description

technical field [0001] The present invention relates to a loudspeaker, in particular to a frame structure of a thinned loudspeaker. Background technique [0002] In recent years, with the popularization of so-called high-definition video and wide-screen TVs, the screens of TVs are becoming normal horizontally wide TVs. In addition, a thin TV is expected as a whole of the TV. [0003] Speaker units for thin TVs (hereinafter referred to as "speakers") are required to be narrower in width and thickness as TVs become thinner and the width of the casing around the display becomes thinner. In addition, at the same time as the image quality of the screen is improved, the sound quality of the output sound is also required to be improved. [0004] In addition to speakers for thin TVs, speakers for small wireless devices have been proposed that are housed in a narrow space and that can radiate sound forward (see Patent Document 1). [0005] In small wireless devices, it is necessar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/28H04R1/30H04R1/34H04R9/00
CPCH04R2307/025H04R7/04H04R9/00H04R2307/027H04R1/30H04R1/345H04R1/28H04R7/14H04R2307/021H04R9/046H04R1/34
Inventor 武轮弘行香川晋弥
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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