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JPS5446033

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DESCRIPTION JPS5446033
DESCRIPTION OF THE PREFERRED EMBODIMENTS 1. Method of Producing a Speaker (1) A
method of producing a speaker comprising the steps of bonding a bobbin wound with a voice coil
and a diaphragm such as a diaphragm. At least one surface of the bonding surface of the bobbin
and the diaphragm is not Apply a curing accelerator for mixed reaction adhesives, apply an
adhesive main agent to any adhesive surface, position the bobbin and the diaphragm in
alignment with each other, combine them together. A method of manufacturing a speaker
characterized by the present invention.
2, the scope of claims
3. Detailed Description of the Invention The present invention relates to a method of
manufacturing a speaker, and more particularly to a manufacturing method in which the process
of assembling a diaphragm such as a bobbin and a diaphragm is improved. The speaker is
composed of a drive unit and a vibration unit, and hot melt processing has generally been
employed to assemble the two. Desirably, adhesion by adhesive is excellent in processability, but
no suitable adhesive has been provided. Nevertheless, the following adhesives are used, although
there are processing difficulties. That is, most of adhesives can be classified into solvent volatileliquid type and mixed type two-component type, and the former is the mainstream. The solvent
volatile-liquid type adhesive is a rubber type and the phenol resin type, and the latter mixed type
two-component type is an epoxy resin type as a representative adhesive. None of these adhesives
are very preferable for use in speaker production.-Rubber-based adhesives are tacky, and
adhesive strength is a property that gains adhesion in the adhesive area of the adherend. These
materials are not suitable for strongly bonding small adhesive areas. Also, phenolic adhesives are
materials that can not be heated due to their thermosetting ability, and require precision. In that
case it is inappropriate. Furthermore, epoxy resin-based adhesives need to be thoroughly mixed
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with each other at a mixing ratio, and curing must proceed from the time of mixing, and they
must be adhered immediately after mixing. Not suitable for bonding in flowing assembly lines.
The adhesive used in the production process of EndPage: 1 speaker can be used in massproduction lines, and the accuracy of the material to be bonded can be sufficiently maintained,
and the appearance of the book should not be impaired. . Therefore, the present invention is a
modified acrylic resin adhesive that has recently been provided, which is a non-mixed reaction
type adhesive composed of a curing accelerator and an adhesive base agent, and is used to
construct a drive unit. It is intended to adhere a diaphragm, such as a coil bobbin, and a
diaphragm that constitutes a vibrating part reliably, easily and accurately. Since this modified
acrylic resin adhesive is non-mixing type, it is most unnecessary, it can be cured rapidly at room
temperature, it is easy to handle because it is anaerobic, and in the case of two-sided bonding, it
is possible to separately apply the can liquid. Since the viscosity of the curing accelerator can be
divided and the coating thickness can be ignored because the process can be divided, the
precision of the control of the adhesive main agent can be maintained, and the adhesive stains
may protrude from the adhesive surface. The details of the present invention will be described in
the order of the manufacturing steps as follows, which can contribute to the stabilization of the
quality because it is difficult to peel off, and resistant to impact.
The diaphragm D is shown as a representative of the moving plate, and the bobbin B wound with
the voice coil b is bonded to the diaphragm D. First, the bonding surface D1 of the diaphragm D
and the bobbin B are bonded A curing accelerator K is applied to the surface B1 (FIG. 1 C11).
This application may be brushed since the viscosity of the curing accelerator is so low that it can
be applied very thinly. Next, for example, the adhesive main agent S is applied to the adhesive
surface B1 of the bobbin B, and the adhesive surfaces of the diaphragm D and the bobbin B are
brought together and adhered to each other (FIG. 1 (FIG. 3)). At this time, since the gap between
the upper end of the bobbin B and the diaphragm side is extremely small, the bobbin is used also
when bonding a cone type diaphragm which prevents the adhesive main agent from sticking out
to the diaphragm side to prevent the vibration of the diaphragm. The same applies to the neck of
the cone. This adhesive can be obtained by only leaving it for about 5 minutes at ordinary
temperature, so that the initial hardness can be obtained. In the above description, the adhesive
surfaces of both the bobbin and the diaphragm (the example in which the two curing accelerators
are applied are shown, but may be applied to any one adhesive surface, or the speaker using the
other cone of the diaphragm As is apparent from the above explanation applicable to the case of
assembling the speaker, as the speaker manufacturing method of the present invention
(according to the second embodiment, the diaphragm and the bobbin are adhered using the nonmixed reaction adhesive, There is almost no need for quantity control, only the adhesive main
agent should be used for precision control in assembly, and it is reliable and easy without
requiring care from mixing to application like mixed adhesives etc. In addition, there is a benefit
of performing accurate assembly, and it is possible to simply control in the manufacturing
process, and there is a possibility that adhesion 1 adheres to the diaphragm to reduce the
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performance of the diaphragm. There is also an excellent merit on the quality of the obtained
speaker 0
4. Brief Description of the Drawings The attached drawings show the manufacturing process of
the speaker of the present invention, FIG. 1 is a flowchart, and FIG. 2 is an enlarged sectional
view of FIG. EndPage: 2
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