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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a conventional
speaker, FIG. 2 is a sectional view showing an embodiment of the speaker of the present
invention, and FIG. 3 is a sectional view of a diaphragm of the same speaker. . 11 W part, 20 .....
resin coating layer, 22 ..... magnetic gap, 23 ..... voice coil. Fig. 1-83. Japanese Utility Model
Application No. 49-53730 (2)
[Detailed description of the invention] In the present invention, the work of the diaphragm with a
screw, and the speaker of which the resin's coating is applied to the foot part of the plate '' to
prevent the work and screw 9 parts. is there. As a conventional speaker, as shown in 1 in 111, it
is almost always a speaker. That is, a plate, equipped with a center ball 1Vr! ! , Forming a field
section t-shadow by means of a ring-shaped snap 8, a ring-shaped upper thread,-) 4 and placing a
surface 6 on the upper plate 4 at @@@ − + F) Upper KIIII 61 [7) x, 郁-Placed, * b # Ct) On the
vagina 2, an edge holding hook 9f is arranged, and the diaphragm 7 is (4) fixed 11, this
diaphragm A voice coil 10 is suspended at 7 to constitute a speaker. In this case, since the edge
portion 8 of the diaphragm 7 is held down by the edge fixing ring 6 and the edge holding ring on
the rim, it is not sufficiently fixed, and the vibration plate 7 vibrates when it vibrates. There are
four drawbacks, such as generating sounds and adversely affecting sound pressure
characteristics. た。 The present invention eliminates the above-mentioned conventional
drawbacks. Hereinafter, the present invention will be described with reference to the drawings of
an embodiment. 11 is a field part, and this field part 11 has a center 13, a plate 13 with poles 12
and a ring shape? / $,) 14.1 itl It is a ring shape and is constituted by a top plate 16 having a
step 16 on the upper surface inside. An edge fixing ring 17 is fixed to the step portion 16 of the
upper plate 18, and an edge portion 19 of the diaphragm 18 is placed on the edge fixing ring 17.
A resin coating ink layer 2o is formed in a portion which is still in contact with the fixing ring 17.
Then, the edge holding ring 21 is placed on the coating layer 20, and the edge holding ring 21 is
set with an adhesive or the like. Then, the voice coil 23 is coupled to the diaphragm 18 so as to
be positioned in the magnetic gap 22 of the field portion 11 as a butterfly. As described above,
the speaker of the present invention is a diaphragm. Since the @ grease coating layer is formed
on the fixed part of the di-part, the fixed part of the edge part becomes perfect, and even if the
diaphragm moves by piston movement, the fixed part of the edge part does not get scratched at
all, abnormal noise During the occurrence of the sound pressure characteristic deterioration can
be completely eliminated. In addition, since the fixed portion of the edge is thickened, it becomes
a guide to improve the workability even when it is incorporated into the field section or the
frame. In the above description, only the field am has been described as the field part, but the
internal magnet type may be used, and the type in which the diaphragm is directly incorporated
in the field part has been described. It may be of a type in which the field section r frame is
coupled and the diaphragm is incorporated with the gasket in this frame.
4 、 脱 の 図 面 し た 脱 ー は 1 の は ー ス を 示 す ス ピ ー カ ー カ ー の 断面 ー ス 1 、 断面
2は2示すを示すスピーカ一スピーカのスピーカースを示す、で、る、は[email protected]
is a cross-sectional view of the speaker diaphragm 11 · · · Field part, 1 B · · · Diaphragm, 19 · · · · · ·
· 2 o · · · · resin coating layer 22 . , 28 ... voice coil. , Agent's name Patent attorney Toshio Nakao
and one other person 11th! 17q9 · θ □ 2, To O agent Toshio Nakao Toshio Nakano et al. □ 4 /
', 13 I 22 3 22 f θ 3 ′ 3 J Name of the first agent of I 9 53 30 30 鰍 す S 1 1 處 嘴 6 Other
agent address in Osaka Prefecture Kadoma city Ogata Kadoma 1006 address Matsushita Electric
Industrial In the corporation, ... · Name (6152) patent attorneys Shigetaka Ogino, N · 114! '.
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