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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a top view of an embodiment of a speaker
diaphragm according to the present invention, and FIG. 2 is a cross-sectional view taken along
the line X-y in FIG. 1 ииииии Diaphragm sloped portion, 2 иииииииииии Edge formed by woven part, 3 ииииии
Edge formed by thin plate with elasticity, 4 ииииииииииииииии . 1: Figure 1 Figure 2 89-
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a diaphragm of a
speaker, and in particular, for combining edge portions of thin films of woven fabric and rubber
elastic body alternately for the purpose of removing double noise from the edge portions. It is.
Conventionally, an edge using a woven fabric as a material is widely used as a free edge type
speaker. H) It is easy to be manufactured, stable against l + + temperature change, relatively low
internal loss in the field,-strong and flexible, difficult to be used by chemical agents, It has a merit
such as However, -4 has the (1) directionality due to the texture, and has a defect of causing
distortion because the elongation in the circumferential direction of the diaphragm is not
uniform when the amplitude is large. ???? The proposal is proposed to eliminate the abovementioned drawbacks. Next, the proposal will be described with reference to the drawings. 1
shows an upper i view of an embodiment of a speaker diaphragm according to the present
invention, and 2 shows a cross sectional view. In II, (1) tlii plate slope 1iis te, the slope iff # (11
(D edge 11 is formed by joining edge (2) made of fiber cloth portion and edge (3) made of thin
plate having rubber elasticity alternately) The cross section is formed in a substantially
semicircular shape Km, and the oblique doill (11 is joined to the peripheral portion. Furthermore,
the woven fabric portion is used to seal and dampen the woven fabric portion, and a damping
agent is also applied to the rubber elastic portion as necessary. The woven fabric portion is
preferably cut from a large woven fabric in an arch shape to make it. As the rubber elastic body,
natural rubber or synthetic rubber such as acrylic rubber, isoprene rubber, butadiene rubber, and
other ethylene / vinyl acetate copolymer (2) are preferable, and bonding to a woven fabric is also
possible. It is desirable to use an agent. In this proposal, at least two or more alternating Km
pieces of edge (2) consisting of a woven fabric part and edges (3 n) consisting of a thin plate
having rubber elasticity are placed around the periphery of vibration T. 1 jis. Since it is formed so
that it has a substantially semi-circular shape and the edge of 9 is joined to the edge of the slope
part, H) the growth of the circumscribing ganglia of the edge can be easily obtained with respect
to the large swing. There is little distorted sound from. (B) It is possible to have both the internal
loss and the resilience, which are the requirements for the speaker diaphragm. Brief description
of klBIijl 11th! II is a top view of one embodiment of the speaker swing plate according to the
present invention, and the second garden is a section IjiIi along XX in FIG. l-? ? Fki 8, 8-an edge
made of woven fabric, b-an edge made of a thin plate having elasticity, 4 и и и и и и joint joint utility
model registration applicant 7 ? ? ? ?? ? ? ?Valver Toshio Takayama (3) 43 M / 112, X
'4-3 x 3 z V, *' ? 4 '5733 utility model registration) li applicant 7 males-Electric Co., Ltd. ? ?
Patent attorney Toshihiro Takayama
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