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JPS5430840

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DESCRIPTION JPS5430840
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing an
embodiment of the present invention, and FIG. 2 is a diagram showing the sound pressure
frequency custom-made together with a conventional example. 9 ииииии Main part of cone, 10 ииииии
Vents, 11 ииииииииииии Elastic material.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cone type
speaker, and more particularly to the improvement of its cone (diaphragm) and edges. Many
cone speakers use the 71J-edge system to improve performance. However, since the free edge is
fixed only to the outer peripheral edge of the cone, mechanical loss of the cone itself is large.
Also, it generates natural sound due to transient movement caused by the cone and causes
deterioration of the sound quality. In addition, the rigidity of the cone is not large, and the
bending movement is easily generated in the cone, which causes the generation of a sharp
resonant screen at frequencies (1) to 5- "J4'Q near the high cut. In the past, to improve the above
defects, we used cone paper made of a material with a large loss, or weakened the press
pressure. However, the variation in production processing of mulberry cones is very large in such
a method. It has the drawback of becoming large. The present invention seeks to obtain a conetype loudspeaker without the above-mentioned drawbacks. In the present invention, as shown in
FIG. 1, one vent hole 0I is partially provided, and the slope of the front or back of the cone main
519) is crushed with an elastic material 1 having mechanical resistance without air permeability.
The part of the outer periphery of the part (9) is an edge. In the figure, (1) is a yoke, (2) is a
center pole, (3) is a permanent magnet, (4) is a plate, (5) is a frame, (6) is a voice coil, +71 is a
spider, +81 Is a dust kickin. And as mentioned above, the cone type speaker by this invention
provided a vent in the main part of a cone, and by covering the elastic material of an edge to the
slope of that (2), mechanical loss was carried out to the cone itself. It can also be stiffened to the
bending motion of the cone, suppress transient vibration that occurs in the cone, reduce the
natural sound and improve the sound quality, and also bend around the highcut due to the
12-05-2019
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bending motion caused by the cone. The sharp co-peaks occurring at the frequency are reduced
as compared with the conventional one as shown by the solid line in FIG. As described above,
according to the present invention, it is possible to obtain a cone type speaker having no sharp
resonance peak with a good sound quality according to the present invention.
12-05-2019
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