JPS5720095

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DESCRIPTION JPS5720095
Description 1, title of the invention
Speaker assembly method
3. Detailed Description of the Invention The present invention relates to a method of assembling
a speaker. A conventional speaker is plated and plated on a lower grate provided with a frame, a
ring-like upper flat and a center ball at the center for the purpose of preventing rusting and iron
powder scattering, and a ring-like magnet on the lower plate The ring is placed on the top plate,
and the frame is placed on top of it, and the upper and lower gratings and the magnet, the top
plate, and the frame are bonded with an adhesive, and the vibration system is used to support the
vibration system. Center, peripheral support center support EndPage: 1 special period, the outer
periphery of the peripheral support was adhered to the frame by an adhesive. The above
assembly method requires plating for the purpose of preventing rusting and preventing iron
powder scattering, and when bonding the central support and the peripheral support, no
adhesive should be applied to the frame. As a result, uneven adhesion is caused due to uneven
application, etc., and the operation 1 is also complicated, and the number of balls is also
increased. The present invention is an improvement of such prior art defects and will be
described in the following drawings. First, the frame (1) heated to about 70 ° C., the upper plate
(2) and the lower plate (3) are dipped in the solution (4) of the heat bath-fusible adhesive heated
and melted, and then removed. It cools to normal temperature, and forms a film (5) of a heatmeltable adhesive having a thickness of 7 to 9 rho on the surface of each part. As a heat melting
adhesive, for example, a dimer acid polyamide resin Harsalon 1138 (trade name Henkel Japan
Ltd. product) obtained by reacting an unsaturated dimer with ethylene diamine is heated to melt
at 230C0, and the antioxidant is added. It was used by adding several% by weight ratio. Next,
place the ring-shaped magnet (6) between the upper and lower plates, (2) and (3), and then place
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the frame (1) on the upper plate) ('2) After temporarily fixing by the method of (2), the bond
between the parts is locally heated to melt the film (5) of the adhesive and bond the parts
together. Next, the outer peripheral edge of the central support (shimper) (7) and the peripheral
support (edge) (8) supporting the central part and the peripheral part of the vibration system is
placed on the circle and the outer peripheral part of the frame (1) respectively. Then, the frame
(1) is bonded to the center support (7) and the peripheral support (8) in the same manner as
described above. According to the above assembling method, the surfaces of the frame (1) and
the upper and lower plates (2) and (3) are coated with the heat-melting adhesive film (5)
excellent in heat resistance, so corrosion resistance can be prevented. The effect and the iron
powder scattering prevention effect are obtained, and the conventional plating process becomes
unnecessary.
In addition, since the adhesive film (5) has internal loss against vibration, the vibration of the
frame (1) is effectively suppressed, and hence the reaction from the frame (1) to the vibration
system is suppressed. Therefore, there is no deterioration in vibration characteristics.
Furthermore, since each component is immersed in the adhesive solution (4), a more uniform
adhesive film (5) can be obtained than with the conventional application method, so that uniform
and strong adhesion can be achieved. Furthermore, since adhesion of the central support (7) and
the peripheral support (8) can be performed by using the film (5) of the adhesive, the
conventional application of the adhesive 1 becomes unnecessary, and the adhesive It has the
advantages of uniform application and strong adhesion without coating unevenness or
protrusion, etc. Furthermore, when a solvent type adhesive is used as the heat melting adhesive,
it is dissolved to an appropriate concentration by the solvent and the thermal melting property
The components of the frame and upper and lower plates are directly immersed in the solution of
the adhesive without heating and removed, and then the solvent is volatilized with a hot air at
about normal temperature or about 50 ° C. to form a film. Further, the present invention is not
limited to the above embodiment, and can be applied to a speaker having a magnetic circuit
using a square yoke or a novo yoke. As described above, the present invention forms a film of a
heat-meltable adhesive on the surface of the frame and upper F plates, and uses this film to bond
the central support and the peripheral support of the vibration system between the components.
As a result, the conventional plating process and adhesive application process are not required,
and not only the number of balls can be significantly reduced, but it also has the advantage of
being able to assemble a robust and robust speaker.
4. Brief Description of the Drawings FIGS. 1 to 3 show a method of assembling a speaker
according to the present invention. (1) is a frame, (2) is an upper grade, (3) is a lower plate, (4) is
a heat melting adhesive solution, (5) is the same, a film, (6) is a magnet, (7) is Center support, (8)
is a peripheral support Patent applicant Onkyo Co., Ltd. Agent Saita Division EndPage: 2 1st
closing vj 2 vw% 311! 21EndPage: 3
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