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DESCRIPTION JPH03186000

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DESCRIPTION JPH03186000
[0001]
TECHNICAL FIELD The present invention relates to a speaker used for various audio devices.
Prior Art Conventionally, this type of loudspeaker has been constructed as shown in FIGS. 3 and
4. That is, the ring-shaped magnet 3 and the ring-shaped upper plate 4 are laminated and
coupled on the lower plate 2 having the center port 27 and the ring 1 to form a magnetic circuit
5, and the metal frame 6 is formed on the magnetic circuit 5. The peripheral edge of the metal
frame 6 is bonded to the peripheral edge of the metal frame 6 together with the gasket 7 by
bonding, and the voice coil 9 is connected to the central portion of the diaphragm 8. The
intermediate portion is held by a damper 10, and the lower portion of the voice coil 9 is inserted
into the magnetic gap 11 of the magnetic circuit 6 without eccentricity, and a dust cap 12 is
attached to the central portion of the upper surface of the diaphragm 8. The lead wire of the
voice coil 9 is drawn out to the middle part of the diaphragm 8 and connected to the gold wire
13 at this middle part, and its tip is connected to a terminal 14 provided on a part of the metal
frame 6. The upper and lower sides of the metal frame 6 and the holes provided in the metal
frame 6 are respectively provided for the purpose of insulating the terminal 14 from the metal
frame 6 and the metal terminal 15 of FIGS. The insulator 16, the lower insulator 17, the short
circuit 31, and the prevention insulator 18 are disposed as shown in FIG. 4, and are configured
by narrowing the white portion 16 & of the metal terminal 15. The metal terminal 15 provided in
each of the insulators 16 to 18 arranged in this manner has a hole for inserting the white portion
161L, and the metal terminal 15 has the white portion 151L upward and downward. The
insulating function between the metal terminal 16 and the metal frame 6 when inserted is set by
the insulators 16 to 18. After that, the metal terminal 16, the upper insulator 16, the lower
insulator 17, and the short prevention insulator 18 are fixed to the metal frame 6 so as to crimp
the white portion 15a of the metal terminal 16. In the past, this type of loudspeaker had to be
mounted via a combination of at least two or more individual insulators when mounting the
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metal terminal 16 on the metal frame 6. This structure not only makes the process complicated
even when the short-preventing insulator 18 is not used at the time of speaker assembly, but also
requires an extra step when the short-preventing insulator 18 intervenes, resulting in poor
productivity. The
In addition, when the metal terminal 16 and the white portion 151L are crimped to be fixed to
the metal frame 6 through the insulator, a crack is generated in the insulator to cause a defect.
An object of the present invention is to solve such conventional problems, and to provide a
speaker with high productivity and low occurrence of defects. Means for Solving the Problems In
order to solve the above-mentioned problems, the present invention is not divided into the upper,
lower, and short-circuiting insulators individually, but in a single part using a raw material such
as a resin. It is constructed using an integral disciplined and processed insulator. Operation The
above-mentioned integral single-piece insulating body is passed through the inside of the hole
provided on the metal frame, and the inside of the insulating material is provided with the metal
terminal and the through-five vanes for inserting the white part. After inserting the white part of
the metal terminal excessively and then caulking the white part of the metal terminal, part of this
insulator is white between the metal frame and the metal terminal. It is possible to perform the
insulating function in the form of being indented and folded in a part, and to fix the metal
terminal in the form of insulation between the metal terminal and the metal frame. Embodiment
Hereinafter, a speaker according to an embodiment of the present invention will be described
with reference to FIGS. 1 and 2. FIG. As shown in FIGS. 1 and 2, a metal frame is formed on a
magnetic circuit 24 which is formed by laminating and connecting a ring-shaped magnet, a ring
22 and a ring-shaped upper plate 23 on a lower plate 21 having a center pole 20. The peripheral
edge of the diaphragm 27 is adhesively coupled to the peripheral edge of the metal frame 25
together with the gasket 26, and the voice coil 28 is coupled to the central portion of the
diaphragm 27. The middle of the voice coil 28 The lower portion of the voice coil 28 is inserted
into the magnetic gap 30 of the magnetic circuit 24 without eccentricity, and the dust cap 31 is
attached to the center of the upper surface of the diaphragm 27 to make a speaker. Commonly,
the lead wires at both ends of the voice coil 28 are drawn out by the middle part case of the
diaphragm 27, connected to the gold wire 32 at the middle part of the diaphragm 27, and the
other end of the gold wire 32 is made of the metal frame 26. It is connected to a terminal 33
provided in part. The terminal 33 will be described with reference to the enlarged view of FIG.
That is, after arranging the insulator 36 made of resin such as polypropylene in which the flat
plate 35b is integrally formed on the upper surface of the rectangular tube portion 361L in the
hole 34 of the metal frame 25, as shown in FIG. The white part 361L is inserted below from
above.
After that, as shown in FIG. 2, the white portion 361L of the metal terminal 36 is crimped to form
the white portion 361L of the metal terminal 36 as shown in FIG. 2C. It is possible to insulate the
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metal terminal 36 from the metal frame 26 in a recessed manner, and further, the metal terminal
36 can be fixed to the metal frame 26. As described above, according to the present invention,
the insulating function and the fixing to the metal frame are achieved by the single insulator
instead of attaching the metal terminal to the metal frame through the plurality of insulators as
in the prior art. It is characterized in that it has a configuration that also functions. That is, since
the number of parts can be reduced, it is possible to supply an inexpensive speaker because the
number of processing steps in assembling the speaker is small. Also, if polypropylene resin or the
like that is moderately soft and hard to break is used as a raw material of the insulator, it
functions as a proper transition material between 0 parts of the metal frame and the crimped
metal terminal, and reliably in the metal frame It can be fixed. Furthermore, by making a cut or
the like in a part of the insulator in contact with the subdivision of the caulking process
performed on the metal terminal part 0, the caulking process is easy and the insulator is not
easily broken. From the above point of view, the present invention has the advantage that not
only the productivity can be improved but also defects such as rotation defects of the
conventional metal terminal and cracks of the insulator can be significantly reduced, and
industrial value. It is a great thing.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a half sectional view showing one embodiment of the speaker according to the present
invention, FIG. 2 a-c are a perspective view and a sectional view showing the assembling process
of the same parts, and FIG. 3 is a half sectional view of the conventional speaker Fig. 4 is an
exploded perspective view showing the structure for attaching the metal terminal to the metal
frame with a single insulator.
24 ...... magnetic circuit, 26 ииииии metal frame, 27 ...... diaphragm 28 ...... voice coil, 30 ...... magnetic
gap, 32 иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Square
cylinder part, 35 b ииииииииииииииииииииииииииииииииииииииииииииииииииииии And 0 part
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