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JPS57104697

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complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPS57104697
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a half sectional view showing a general
speaker, FIG. 2 is a half sectional view of the main part of a conventional speaker, and FIG. 3 is a
vibration in one embodiment of the speaker of the present invention. A half sectional view at the
time of assembly of the plate, FIG. 4 shows the same diaphragm edge. It is a half section view of a
state where a voice coil was combined. 5 · · · Magnetic circuit, 6 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · 2 · · · · · · · · · · · · · · · ··· · · Magnetic gap, 15 · · · · · · · · · · · · · · · · adhesive.
[Detailed description of the invention] The present invention relates to a speaker using a
diaphragm mainly composed of an olefin-based fiber, and it is preferred to join the joint to
improve the adhesive strength between the diaphragm, voice coil and edge. It is related to those
coated with a derivative of ethylenic / nalythiclino / °, chlorinated polypropylene, chlorinated
polyvinyl alcohol, 10167'D ′ ′ ′ ′ ′ ′ ′ ′, In general, as a speaker, a plate 2 having a
center pole 1 as shown in FIG. Ring-shaped magnet3. Similarly, the frame 6 is connected to the
magnetic circuit 5 constituted by the ring-shaped earth part plate 4, and the edge 9 of the
diaphragm 8 is bonded to the peripheral portion of the frame 6 by adhesive bonding. The Heuss
coil 1o is connected to the center of the motor, the middle part of the Heuss coil 10 is held by the
damper 11 and the Heuss coil 1o is inserted into the magnetic cap 12 of the magnetic circuit 5
without being biased. A dust cap 13 is attached to 1-11 '+ 1. In such a speaker, conventionally,
the diaphragm 8 made of an olefin resin film or fiber such as polypropylene or polyethylene is
used, or the diaphragm 8 using such an olefin resin has adhesiveness. There was a problem with
2.) Only the adhesive adhesive 14 can be used for bonding such a diaphragm 8 and the ENO / 9
cross coil 10 as shown in FIG. 2 and, in particular, the adhesive for bonding with the voice coil 10
When using an adhesive of the type, the vibration of the voice coil 10 is attenuated and
transmitted, resulting in a drawback that a sufficient sound pressure can not be obtained. When
the adhesive property is high, the characteristics as a speaker are improved but the adhesive
strength between the diaphragm 8 and the voice coil 1o is weak, and there is a disadvantage that
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the voice coil 1o is detached as a large input speaker. The present invention eliminates the
above-mentioned conventional drawbacks. Hereinafter, an embodiment of the present invention
will be described with reference to FIG. 3 and FIG. The overall structure of the loudspeaker is the
same as that of FIG. 1, and only the features of the present invention will be described here. First
of all, as shown in FIG. 3, the adhesion part of the edge 9 of the olefin-based diaphragm 8 and the
contact part of the voice coil 10 are diluted with solvent such as chlorinated chlorophyll or
chlorinated polyethylene 16 in the solvent. IQ, 'jl and apply, after drying of this coated layer 15,
solvent type adhesive,-! An edge 9 ° voice coil 10 is adhered by using a bamboo-curing adhesive
16.
In addition, when the diaphragm 8 and the voice coil 10 were combined using a rubber-based
adhesive (chlorobreno), those having a peel strength of 0.8 to 1 · okg / 1 nch in the related art
are 2.0 in the present invention. The peel strength was -2.4 kg 71 nch and more than doubled. As
described below, since the speaker according to the present invention is configured, sufficient
adhesive strength can be obtained even with an olefin-based diaphragm having poor adhesion,
and stable quality can be achieved, and a large input is applied. It has the advantage that the
sound pressure of the voice coil can be transmitted to the diaphragm without being damped and
the necessary sound pressure can be obtained without damping of the Heuss coil, and this is a
dog of practical value. is there.
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