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JPH05199585

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complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPH05199585
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
method of manufacturing a loudspeaker in which the manufacturing process is improved by
using a novel material and an adhesive for bonding the diaphragm and the gasket in the method
of manufacturing the loudspeaker. .
[0002]
2. Description of the Related Art A conventional method of manufacturing a loudspeaker of this
type mainly comprises a lower gasket such as cardboard on an outer edge portion of an outer
frame of an iron plate frame, and a conventional solvent-based or emulsion-based adhesive. The
adhesive was heat-cured and adhered, and the edge adhesion portion of the conical diaphragm
was adhered thereon with the same adhesive, and further, an upper gasket made of paper or the
like was adhered thereon.
[0003]
Therefore, in the conventional manufacturing method of this type of loudspeaker, in the bonding
process of the upper gasket, many heating devices for heating the adhesive, heating time, etc. are
required, and further, , There was a problem that the reliability of the adhesive strength of the
adhesive is thin.
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Further, among such adhesives, in the case of an elastomer adhesive, it peels off due to adhesion
failure, causing a generation of a billet failure and the like. The main cause of this is considered
to be a lack of adhesive strength between the edge portion of the diaphragm and the gasket or a
slight leak at the time of applying the adhesive.
[0004]
Therefore, in order to solve the problems of the conventional speaker manufacturing method, the
present invention does not use an organic solvent, but uses a UV curable resin, and the process is
time-wise and work-wise. It is an object of the present invention to provide a method of
manufacturing a speaker, which aims to simplify the working process and shorten the working
time and to improve the quality of the product speaker.
[0005]
The configuration of the present invention for achieving the above object will be described with
reference to FIG. 1 corresponding to an embodiment speaker. And vibration of the lower gasket
(2), the edge attachment portion (3a) of the conical diaphragm (3), and the upper gasket (4a)
thereon. Apply a UV curable adhesive (5) between the edge affixing portion (3a) of the plate (3)
and the upper gasket (4a) made of a synthetic resin capable of transmitting UV light, and
irradiate UV light It is a speaker manufacturing method which carries out hardening adhesion.
[0006]
Since the present invention is configured as described above, the edge of the conical diaphragm
(3) on the lower gasket (2) stuck on the outer edge of the frame (1) After bonding the adhesive
part (3a), apply a UV curable adhesive (5) on the edge adhesive part (3a) of the diaphragm (3),
and further transmit UV light on it Place the upper gasket (4a) made of synthetic resin and
irradiate UV light.
[0007]
Therefore, according to the speaker manufacturing method of the present invention, as described
above, the UV-curable resin adhesive (5) on the lower surface is transmitted through the gasket
(4a) made of synthetic resin capable of transmitting UV light, and the UV is transmitted The
curable adhesive (5) can be cured.
As a result, strong adhesion between the edge portion (3a) of the diaphragm (3) and the gasket
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2
(4a) can be obtained in a short time with little effort, and the quality of the product speaker can
be improved.
[0008]
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 (a) is a view showing an embodiment of a speaker manufactured by the method of the
present invention, and FIG. 1 (b) is a partially enlarged view.
The speaker is generally mounted on the frame (1) concentrically with a magnetic circuit (12)
forming an annular magnetic air gap (11). (3)A voice coil (13) is wound around the center hole
and a voice coil bobbin (14) with a damper (15) attached to the middle part is attached to the
central hole. 13) The magnetic gap (11) is supported by a damper (15) whose edge is attached to
the frame (1) with an adhesive so as not to touch the pole wall.
[0009]
Then, at the time of assembly, as described above, on the outer edge of the frame (1) to which the
magnetic circuit (12) is attached, the lower gasket (2) and the edge affixing of the conical
diaphragm (3) In a method of manufacturing a speaker in which the upper portion gasket (4a) is
further attached to the upper portion (3a), an edge attaching portion (3a) of the diaphragm (3)
and a synthetic resin capable of transmitting UV light A UV curable adhesive (5) is applied
between the upper gasket (4a) and UV light is transmitted through the upper gasket (4a) by a UV
light irradiation device (6), and the adhesive (5) is applied. Is a method of manufacturing a
speaker for curing and bonding.
[0010]
Although the embodiments considered to be representative of the present invention have been
described above, the present invention is not necessarily limited to only the structure of these
embodiments, and includes the above-described components according to the present invention,
and the present invention In order to achieve the purpose mentioned above, the present
invention can be suitably modified and implemented within the range having the effects
mentioned below.
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[0011]
As is apparent from the above description, according to the present invention, the UV curable
adhesive (5) is coated on the edge affixing portion (3a) of the diaphragm (3), Since the upper
gasket (4a) made of a synthetic resin capable of transmitting UV light is placed on top and UV
light is irradiated, it passes through the gasket made of a synthetic resin (4a) that can transmit
UV light. And the UV curable resin adhesive (5) on the lower surface can be irradiated to cure the
UV curable adhesive (5). As a result, the edge affixing portion (3a) of the diaphragm (3) And
strong adhesion of the gasket (4a) can be obtained in a short time with little effort without
requiring a heating device or heating time, and it can not be expected from the conventional one
which simplifies the working process. It came to have a good effect.
[0012]
Furthermore, since the present invention uses a UV curable adhesive having high adhesive
strength and tackiness, it retains its viscoelasticity even after curing and does not solidify, so the
adhesive leaks even if it sticks out Since it is softer than the edge affixing portion (3a) of the
diaphragm (3), even if it abuts on the edge affixing portion (3a), no chattering noise is generated,
so the quality of the product speaker can be improved It came to be able to expect also the effect
that it can be done.
Then, apply a UV curing adhesive (5) to the inside of the bonding portion between the diaphragm
edge sticking portion (3a) and the upper gasket (4a), and divert it as a sealing material for
preventing billy vibration. It can also be done.
[0013]
Furthermore, since the adhesive (5) is a non-solvent type and is not a thermosetting type, it is
preferable that the edge sticking portion (3a) of the diaphragm (3) is not adversely affected
chemically or thermally. Get the effect.
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