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JPH0591590

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DESCRIPTION JPH0591590
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
method of manufacturing an edge of a speaker for use in various audio equipment and a speaker
using the same.
[0002]
2. Description of the Related Art A conventional method of manufacturing an edge for a speaker
and a speaker using the same will be described with reference to the drawings.
[0003]
3 (a) to 3 (d) are manufacturing process diagrams showing a conventional method of
manufacturing an edge for a speaker, and FIG. 3 (a) shows a state in which the sheet-like edge
material raw fabric 1 is wound on a roll, The edge material raw material 1 is often made of
cotton-based cloth or urethane foam coated with a rubber-based resin such as SBR or NBR.
[0004]
The said edge material original fabric 1 is cut into the edge material piece 2 of a desired
magnitude | size, as shown to the figure (b), It heat-molds with a shaping | molding die (not
shown), and the figure (c) is shown. It is processed into a desired shape as shown.
[0005]
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1
The edge material piece 2 thus processed is punched (not shown) by using a die for cutting the
inner diameter and the outer diameter to obtain an edge 3 as shown in FIG. Is fixed to the
peripheral portion of the diaphragm using an adhesive or the like and used in the speaker.
[0006]
However, in the above-described conventional method for manufacturing an edge for a speaker,
the edge material piece 2 of a desired size is cut from the sheet-like edge material raw fabric 1
and then heat-formed, Since the manufacturing method is to discard the unnecessary part after
punching the diameter to obtain the edge 3, there are many man-hours and material loss, and not
only the cost of parts of the edge 3 becomes high but also as a speaker. There were many issues
from the viewpoint of industrial waste and resource saving.
[0007]
The present invention solves the above-mentioned conventional problems and aims to provide a
method for manufacturing a speaker edge capable of reducing material loss and improving
productivity and reducing costs, and a speaker using the same. It is
[0008]
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the method for
producing an edge for a loudspeaker according to the present invention and a loudspeaker using
the same have a desired length of a porous foamed resin sheet processed into a tape shape. The
ring-shaped foamed resin sheet is fitted in a jig having an outer diameter fitted into the ringshaped inner peripheral portion so that the thickness direction of the foamed resin sheet
becomes horizontal. The speaker edge is manufactured by being arranged and heated in a mold
in a state of being spread and expanded in the outer peripheral direction.
[0009]
[Function] With this manufacturing method, it becomes possible to manufacture a speaker edge
with improved productivity by eliminating material loss, and it is also possible to reduce costs by
using this edge for a speaker. .
[0010]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A method of manufacturing an
edge for a loudspeaker according to an embodiment of the present invention and a loudspeaker
using the same will be described with reference to the drawings.
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2
[0011]
1 (a) to 1 (g) are manufacturing process diagrams showing a method of manufacturing an edge
for a speaker according to the present invention, and FIG. 1 (a) shows a state where a tape-like
edge material raw fabric 17 is wound on a roll. The edge material raw sheet 17 uses a porous
foamed resin sheet (for example, a urethane foam or a rubber foam) or a porous foamed resin
sheet impregnated or coated with a rubber-based resin.
[0012]
The above-mentioned edge material raw fabric 17 is cut into edge material pieces 18 of a desired
size as shown in FIG. 6B, and both ends in the long side direction of the edge material pieces 18
are butted and joined. A ring-shaped edge workpiece 19 is created as shown in FIG.
[0013]
Insert this edge work 19 in the outer peripheral part of the jig 20 shown in FIG. 7 (d) (FIG. 10
(e)), and open the edge work 19 in the outer direction as shown in FIG. Push out and expand.
[0014]
In this manner, the edge product 19 is placed in the jig 20 and expanded in a state where it is
placed in the edge forming mold and heat molding is performed (not shown), as shown in FIG. Is
a manufacturing method for forming the
[0015]
The thickness T of the outer peripheral portion of the jig 20 into which the above-mentioned
edge product 19 is inserted is required to be equal to or greater than the thickness dimension t
of the edge processing product 19, and TT By configuring in the relationship of t, as shown in
FIG. 6F, it is possible to hold the edge-in-progress product 19 inserted in the jig 20 and expand
the jig.
[0016]
FIG. 2 is a half sectional view showing a configuration of a speaker using the edge 11 obtained
by the above-described method of manufacturing an edge for a speaker according to the present
invention, and a lower plate 5 having a center pole 4 and a ring magnet 6; A ring-shaped upper
plate 7 is coupled to form a magnetic circuit 8 in which a magnetic gap 13 is formed.
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[0017]
The present invention has a frame 9 coupled to the upper surface of the magnetic circuit 8, and a
voice coil 14 fitted to the magnetic gap 13 at the periphery of the frame 9 and fixed to the
periphery of the diaphragm 12 coupled at the center. The above-mentioned edge 11 is fixed
together with the gasket 10.
[0018]
The peripheral edge of the damper 15 supporting the voice coil 14 is fixed to the frame 9, and
the dust cap 16 is fixed to the upper surface of the central portion of the diaphragm 12 for the
purpose of preventing foreign matter intrusion into the magnetic gap 13. It is configured.
[0019]
Since the speaker configured in this way is configured using the edge 11 obtained by the method
for manufacturing a speaker edge according to the present invention described in FIG. As it
becomes possible to reduce the cost of the entire speaker.
[0020]
As described above, according to the method of manufacturing an edge for a speaker according
to the present invention and a speaker using the same, it is possible to eliminate the loss of
material and to manufacture the edge for a speaker whose material yield is dramatically
improved. Thus, by lowering the unit price of the edge, not only the cost of the entire speaker
can be reduced, but also excellent effects can be obtained from the viewpoint of industrial waste
and resource saving, and the contribution is great.
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