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JPS56152492

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPS56152492
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing the
configuration of a conventional dome-shaped speak force and the vibration system of a horn type
speaker driver, and FIG. 2 shows the configuration of a vibration system assembling apparatus.
FIG. 3 is a cross-sectional view showing the construction of a vibration system of defective
assembly, FIG. 4 is a perspective view of a voice coil assembly used in this invention, and FIG. 5 is
an embodiment of the vibration system of this invention. It is a sectional view showing an
example. In the figure, 1 is a vibration system, 2 is a dome diaphragm, 3 is a rising portion, 4 is a
voice coil assembly, 5 is a voice coil, 6 is a bobbin, 7 is an adhesive, 8 is a top of the bobbin 6, 9
is a protrusion Show.
DETAILED DESCRIPTION OF THE INVENTION This invention relates to a speaker vibration
system. FIG. 1 is a cross-sectional view showing the # 1 configuration of the vibration system of
the driver of the conventional dome-shaped speaker 4 horn-type speaker. As shown in the figure,
the system C1 includes a dome diaphragm 2, voice voice sensors, and a sliver 4 and the ayampli
4 has a bobbin 6 and a voice coil 5 mounted thereon. The dome diaphragm 2 is provided with a
rising portion 3 for receiving and receiving the end of the bobbin 6. In the rising portion 3, the
end of the bobbin 6 is fixed 11 □ with an adhesive 7. There is. FIG. 2 is a cross-sectional view
showing the structure of an assembly apparatus of such a vibration system. The method of
assembling the vibration system 1 will now be described with reference to FIG. In the figure, A
and B are jigs, respectively. First, place the dome diaphragm 3 on the jig A, then fit the voice coil
assembly fitted in the jig B, apply the adhesive 7 to the fitting part, or vibrate the dome on the jig
A An assembly method is adopted in which a plate hole is placed, and then the adhesive 7 is
applied to the rising portion 6 of the dome diaphragm hole, and the voice coil assembly fitted in
the jig B is adhered. Generally, as the dome diaphragm holes, a cloth impregnated with a
synthetic resin, a foil of a synthetic resin or metal, or the like is used as a material, and these
materials are manufactured by hot press forming or pressure forming. Therefore, finally, it is
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necessary to pull out the completed diaphragm from the mold, and for this reason, the rising
portion 6 of the dome diaphragm ridge needs to have a slope for extraction, and in the case of a
right angle surface, it is an r slope. For this reason, in the assembling method shown in FIG. 2, as
shown in FIG. 3, the rising portion of the dome vibrating plate hole is not made perpendicular to
the bobbin 6 of the poison coil assembly with respect to the dome imaging plate K. The bobbin 6
of the voice coil may be assembled obliquely along the slope of 6. For this reason, the adhesive
strength between the dome diaphragm weir and the voice coil and the joint portion of the
assembly decreases, which causes deterioration of the characteristics, and further inserts such a
vibration system into the magnetic gap of the magnetic circuit not shown. When a voltage is
applied to 5 and driven, rolling (lateral deflection) occurs, the voice coil 5 contacts parts of the
magnetic circuit (yoke plate, center ball), and an abnormal sound is generated and eventually
destroyed. As a result, (1) the magnetic gap length is increased, and the conversion efficiency is
reduced due to the reduction of the magnetic flux density of the gap. The present invention was
made to eliminate the disadvantages of the conventional vibration system as described above,
and the object of the present invention is therefore to prevent the bobbin from being assembled
obliquely with respect to the dome diaphragm during assembly. An object of the present
invention is to provide a vibration system configured to be correctly assembled at all times at
right angles.
The main point of the configuration of this invention is that in the prior art, the positioning of the
fitting portion of the dome diaphragm and the voice coil assembly is only due to the voice coil
bobbin 6 abutting against the rising portion 3 of the dome diaphragm. Therefore, in view of the
fact that the bobbin 6 may be fixed obliquely on the slope of the rising portion 6 so that
positioning may be performed at two or more points, the dome diaphragm and the poise coil
assembly turf In that it is designed to maintain the squareness and concentricity of the Next, an
embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 4 is a perspective view of a voice coil assembly used in the present invention, and FIG. 5 is a
cross sectional view showing an embodiment of the present invention. It will be appreciated in
FIG. 4 that the top portion 8 of the bobbin 6 of the voice coil assembly, assembly sleeve is
provided with a plurality of projections 9. The plurality of projections 9 can be easily provided by
cutting the top portion 8 of the bobbin 6 and bending it outward. The method of assembling the
vibration system itself using such a voice coil assembly may be the conventional method
described with reference to FIG. As shown in FIG. 5, the nine vibration weirs assembled in this
manner come out of position by abutting the top s8 of the bobbin 6 and the plurality of
projections 9 into the dome vibration plate hole. When the voice coil assembly 4 fitted in the ib
jig B is about to slip and lean on the rising product 6 of the dome diaphragm g, the projection 9
of the bobbin 6 is at the edge with the dome diaphragm Abutment, prevent slippage. In other
words, the concentricity of the dome imaging plate and the voice coil, and the concentricity of
the semp zees are opposite to the rising portion 3 of the dome diaphragm & the squareness is the
edge of the dome diaphragm and the projection s9 of the top 8 of the bobbin 6 In order to hit
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each other, it is necessary to strike a 3 'position. As a result, the dome diaphragm can be a voice
coiler. The squareness and concentricity of sesopriji, which is better than before, and improved at
the time of manufacture). According to the above-described results, furthermore, the air gap
length in the magnetic circuit can be reduced, and improvement in the conversion efficiency of
the vibration system can also be expected. Sound pressure frequency characteristics, because the
stability of the adhesive strength of the dome diaphragm & the posi coil and the adhesive
bonding part of the sensor 194 is also improved. Performances such as harmonic distortion
characteristics are also stable. As described above, according to this invention, an assembly jig
which requires a large number of expensive parts by adding or revising a part of parts is a
vibration system which is completed while using a conventional jig. There is an advantage that it
will be greatly improved in the market and performance.
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