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Sound-electricity transducer

An acoustoelectric transducer and vibrating sheet technology, applied in transducer diaphragms, electromechanical sensors, sensors, etc., can solve the problem of difficulty in improving sound pressure characteristics and frequency characteristics in high frequency regions.

Inactive Publication Date: 2002-04-24
PIONEER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the problem arises that it is ultimately difficult to improve the sound pressure characteristics and frequency characteristics in the high frequency region

Method used

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  • Sound-electricity transducer
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  • Sound-electricity transducer

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0039] figure 1 It is a perspective view of the structure of the high-frequency audio speaker of the first embodiment, and the drawing is partially cut away for easy understanding of the structure.

[0040] The high-frequency audio speaker 16 includes: a rectangular parallelepiped magnet 17; yokes 18 and 19 fixed so as to sandwich the magnetic poles (N pole and S pole) of the magnet 17; ) 18a and the convex upper end (magnetic pole) 19a of the yoke 19 substantially horizontally placed rectangular annular support element 20; It floats in the gap 20a and between the poles 18a and 19a.

[0041] Such as figure 2 Longitudinal section (along figure 1 As shown in the sectional view of line A-A' in ), there is a magnetic circuit formed by magnet 17 and yokes 18 and 19. The magnetic poles 18a and 19a of the yokes 18 and 19 are opposed to each other with a predetermined interval formed therebetween, thereby forming a magnetic gap MG. The vibrating piece 21 supported by the support...

no. 2 example

[0060] The following will refer to the attached Figure 5-7 A second embodiment of the present invention is described.

[0061] Figure 5 It is a perspective view of the structure of the high-frequency audio speaker of the second embodiment, in order to facilitate understanding of the structure, the drawing is partially cut away.

[0062] The high-frequency audio speaker 25 includes: two cuboid magnets 26 and 27; three yokes 28, 29 and 30 that are fixed so as to sandwich the poles of the magnets 26 and 27; A rectangular ring-shaped supporting member 33 with convex upper ends (magnetic poles) 31, 28a, 28b and 32 placed substantially horizontally; and a vibrating plate 34 supported by the supporting member 33.

[0063] Such as Image 6 Longitudinal section (along Figure 5 As shown in the sectional view of line B-B' in ), there is a magnetic circuit formed by magnets 26 and 27 and yokes 28, 29 and 30. The magnetic pole 28a of the yoke 28 and the magnetic pole 31 of the yoke...

no. 3 example

[0076] The following will refer to the attached Figure 8-10 A third embodiment of the present invention is described. This embodiment is a high-frequency audio speaker whose structure has the characteristics of the speakers of the first and second embodiments.

[0077] Figure 8 It is a longitudinal sectional view of the structure of the high-frequency audio speaker of the present embodiment, and figure 2 and 6 The same or corresponding parts are marked with the same reference numerals.

[0078] Referring to the accompanying drawings, the high-frequency audio speaker 36 includes: two rectangular parallelepiped magnets 26 and 27; three yokes 28, 29 and 30 that are fixed so as to sandwich the magnetic poles of the magnets 26 and 27; , 29 and 30 convex upper ends (magnetic poles) 31, 28a, 28b and 32 substantially horizontally placed rectangular ring support element 20; and a vibrating piece 34 supported by the support element 20.

[0079] The magnets 26 and 27 and the yoke...

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Abstract

Conductor pattern portions CLa1 and CLb1 are printed on a center portion of a polymeric resin film, and the center portion is folded and then bonded, thereby forming a diaphragm 21 which integrally has a flat plate-like portion 23 having the conductor pattern portions CLa1 and CLb1, and first and second vibrating sections 21a and 21b having a curved shape. A magnet 17 and yokes 18 and 19 form a magnetic circuit and a magnetic gap MG. The flat plate-like portion 23 is inserted into the magnetic gap MG. The whole diaphragm 21 is supported by a support member 20 in a floating state. In this structure, when an audio signal is supplied to the conductor pattern portions CLa1 and CLb1, the flat plate-like portion 23 is vibrated in a direction H by dynamic force generated by the magnetic field in the magnetic gap MG, and currentin the conductor pattern portions CLa1 and CLb1 which are inserted into the magnetic gap MG, and also the first and second vibrating sections 21a and 21b are vibrated in the direction H, so that a reproduced sound of excellent high-frequency characteristics is released.

Description

technical field [0001] The present invention relates to an acoustic-electric transducer, such as an audio speaker, especially an acoustic-electric transducer with excellent performance in the high-frequency region. Background technique [0002] Traditionally, the well-known acoustic-electric transducers are as Figure 14 and 15 Audio speakers of the structure shown. [0003] profile Figure 14 The conventional audio speaker shown comprises: a vibrating plate 3 stretched between support members 1 and 2; and a plurality of pairs of magnets 4a and 4b to 6a and 6b, each pair of magnets being placed vertically opposite each other on both sides of the vibrating plate 3 . [0004] The structure of the vibrating piece 3 is: a conductor cloth corresponding to the voice coil is formed on a flat film material. Figure 7 . [0005] The magnets 4a and 4b to 6a and 6b are arranged to form gaps at predetermined intervals L in the lateral direction. According t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/00H04R7/12H04R7/18H04R9/02H04R9/04H04R9/06
CPCH04R7/18H04R9/06H04R9/025H04R9/045
Inventor 大矢场隆史寺内正一郎石附智规花山胜时加藤竜一
Owner PIONEER CORP