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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a dome speaker
according to an embodiment of the present invention, and FIG. 2 is a plan view thereof.
DESCRIPTION OF SYMBOLS 1 ... diaphragm, 11 ... dome part, 12-edge part, 13 ... bead part, 14 ...
attachment part, 2 ... voice coil, 3 ... magnetic circuit, 31 ... -Center ball, 32: Magnet, 33: Gap, 34:
Outer ball, 35: -i-k, 4-----9h, 41-- , 5 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · Figure 1-101-51-136144 (2) Figure 2-102
DETAILED DESCRIPTION OF THE INVENTION This invention relates to a speaker diaphragm, and
more particularly, to a bead provided on the stomach side of the diaphragm to prevent distortion
and deformation of the diaphragm by the bead, as well as positioning at the time of assembly The
present invention relates to a speaker diaphragm that is easily pressed. The diaphragm for dome
speakers such as 15 conventional hard domes, soft domes, etc. The distortion of the shape of the
diaphragm which occurs from molding to assembly of the diaphragm not only adversely affects
the reproduction characteristics as a speaker · 1 as a speaker Embedded. -; One work (1) One
work was troublesome. As a result, a special holding plate is used for holding the O shape after
the forming process of the diaphragm, and the shape is held between the holding plates. In
addition, at the time of incorporating 5 as a 吃 speaker with a distortion-free diaphragm, the
position of the voice coil, that is, the horizontal position (centering) of the diaphragm did not
match well, and a highly skilled operator was required for assembly. . The present invention aims
at eliminating the above-mentioned nine problems, and its feature is to provide a bead on the
periphery of the diaphragm to prevent the distortion of the diaphragm and to hold the
diaphragm in place of the diaphragm. The present invention will be described in detail with
reference to an embodiment shown in the drawings. -) FIGS. 1 and 2 show an example in which
the present invention is applied to a diaphragm with dome force. The diaphragm 1 of this
invention is a tweeter L 20 (2) 1 or a different material for a skoca but a circular plate material
made of a light metal, polyester resin, high crystal fiber, carbon fiber, Japanese paper, etc. is
pressed by a dome at the center郁 11. It is a book in which the attachment part 14 which
provided the convex-shaped or concave-shaped bead part opening with respect to the front edge
side of the edge ridge 12 and further 5 outer periphery said diaphragms in the outer periphery is
a book. Furthermore, the voice coil 2 is attached to the rear side of the diaphragm at the dome
outer peripheral portion of the diaphragm 1 to form a 10 diaphragm for a dome speaker. Since
the bead llu molded into the mounting portion 14 provided on the outer periphery of the
diaphragm edge is simultaneously molded into the dome edge molding 11, it is molded into a
circle having the same name as the dome ridge 11 and the edge ridge U of the outer periphery.
Center pole-n which applies a magnetic field to 1 ° voice coil 3, outer ball 34, yoke ink, spacer
ring 4 attached under the condition of 1: 1 Start up, set up a key for the company.
In this way, a jig is used to join the presser ring 5, the spacer ring 4 and the diaphragm l to the
peripheral bead portion 13 of the diaphragm 1 (one that does not have to be convex). Together
to form a diaphragm assembly. Attached to the diaphragm and this rear side. The voice coil 3 can
be disposed at the center of the magnetic pole 30 between the magnetic poles 30 of the magnetic
circuit 30 without the need for special skill. As described above, this invention provides a bead 蔀
at the time of die 1
afram molding at the mounting portion constituted by the peripheral flat
portion of the speaker diaphragm, and the spacer ring and some i are at the bead portion of the
pressing ring A concave groove and a convex in consideration of the thickness and the like of the
diaphragm are provided at corresponding positions, and the five persons are aligned based on
the bead part, the concave groove and the convex, and are integrally attached in 1115. As a
result, the mechanical seca of the formed diaphragm and the deformation due to the distortion K
at the time of heat treatment, ↑ ′ ′ 5. As the # 防 ぎ bead part can be used as a guide for the
center of the diaphragm-1t 1 = 20 (4) 1 positioning, it is extremely easy to assemble, as it
prevents deformation during assembly of the flam. It has the effect that the assembly with high
charge capacity can be easily performed by the unskilled person.
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