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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of the present diaphragm, and FIG.
2 is a cross-sectional view of FIG. ̲, 4 ...... around. Brush / A 坏 second chamber f go '/ / 83-
Detailed Description of the Invention Since the conventional diaphragm in the speaker uses the
flat plate of the same mass, distortion deformation of the diaphragm occurs. Whether there is
one kind of defect or in the present invention, a reinforcement plate is put on the flat plate 1
, and the mass at the excitation point is maximized and the mass toward the periphery from the
excitation point In order to provide a diaphragm which has been modified so as to make the mass
incongruent and eliminate all the above-mentioned drawbacks, the embodiment of the present
invention will be described with reference to the drawings. For example: A reinforcing plate (2) is
applied to a diaphragm (1) made of metal, polymer or the like to form a diaphragm. Although the
cross-sectional shape of the reinforcing rib (k) is rectangular in the present embodiment as
shown in FIG. A tapered, elongated triangle is formed with the side in contact with the excitation
point (3) as the base and the point in contact with the periphery (11) as the apex. In addition, the
material of the reinforcement (2) is also light as in the case of the flat plate (1), such as metal,
polymer substance, 9 paper substance, etc., and has high strength. In the present embodiment,
the reinforcement plate (2) is applied to the flat plate (1). However, the same effect can be
obtained by molding the flat plate (1). The embodiment of the diaphragm according to the
present invention is as described above, and the flat plate (1) is reinforced and the reinforcement
(2) is applied, and its shape is an excitation point (? Since it has a tapered, elongated triangle
shape with 弔 娶 7, the mass at the excitation point is 2-j maximum, and the mass decreases
toward the periphery, so that no interference occurs and interference may occur. Instead, the
above-mentioned drawbacks existing in the conventional diaphragm can be eliminated to
produce an extremely comfortable sound.