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DESCRIPTION JP2005150900

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DESCRIPTION JP2005150900
The present invention relates to a speaker used in various audio devices, and provides a speaker
in which relay connection of a flexible wire is facilitated. A speaker according to the present
invention is provided with a pair of sandwiching parts 11f with an opening 11g facing inward at
a relay part 11 connecting a terminal 2 installed on a resin frame 1a and a voice coil 3, and a
central part thereof A conical central wall 11e is provided so that the flexible wire 6a can be
easily inserted and positioned from the upper side, and a speaker capable of improving the
assembling operation efficiency and mechanically assembling can be provided. [Selected figure]
Figure 1
Speaker and method of manufacturing the same
[0001]
The present invention relates to a speaker used for various acoustic devices and a method of
manufacturing the same.
[0002]
A speaker terminal connected to an audio signal amplification unit on the device side is often
provided from the front of the speaker in terms of ease of connection with the device.
[0003]
This conventional speaker will be described with reference to FIGS.
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1
[0004]
FIG. 4 is a half sectional view of the conventional speaker, FIG. 5 is a top view of the state where
the diaphragm is removed from the top, and FIG. 6 is a flexible wire to the relay part which is the
main part It is a perspective view of a relay part explaining attachment of.
[0005]
In the figure, 7 is a magnetic circuit comprising a lower plate 7b having a center pole, an annular
magnet 7c and an upper plate 7d, 1 is a plastic frame coupled to the upper portion of the
magnetic circuit 7, 3 Is a voice coil consisting of a wire ring fitted in the magnetic gap 7a of the
magnetic circuit 7 and a voice coil bobbin wound around it; 4 is an inner circumference coupled
to the voice coil 3 and an outer circumference coupled to the frame 1; A damper for supporting
the voice coil 3 is a diaphragm having an outer periphery coupled to the frame 1 through an
edge portion and an inner periphery coupled to the voice coil 3.
[0006]
Reference numeral 2 denotes a speaker terminal attached to the frame 1, and a connector
connected to an audio signal amplification unit on the device side (not shown) is inserted into the
housing 2a.
Reference numeral 2b denotes a terminal plate press-fitted or outsert-formed in the housing 2a
connected to the connector.
8 is a relay mounted on the frame 1, and the flexible wire 6 for connecting the terminal of the
wire coil of the voice coil 3 and the terminal 2 is inserted into the sandwiching portion 8a from
both sides, and is inserted along the groove 8e of the wall 8b. At the same time, when the
speaker is driven (the voice coil 3 moves up and down), it is placed at an appropriate spatial
position where it does not generate noise due to contact with the diaphragm 5 and the damper 4.
[0007]
Further, as prior art document information related to the invention of this application, for
example, Patent Document 1 is known.
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2
Japanese Patent Laid-Open No. 2000-324596
[0008]
However, in the above-mentioned speaker, in order to sandwich and fix the flexible wire 6 in the
sandwiching portion 8a for relaying, it is necessary to fit the sandwiching portions from different
sides, which takes time and effort, and the voice coil side In order to follow the groove 8e in the
wall 8b, the flexible wire 6 has to be corrected, which increases the cause of the occurrence of
the failure due to the variation in the insertion work.
[0009]
SUMMARY OF THE INVENTION The present invention is to provide a speaker having an easy-toassemble operation having a relay fixing portion which solves the above-mentioned problems.
[0010]
In order to solve the above-mentioned problems, the speaker according to the invention of claim
1 of the present invention has two walls in which the relay portion faces the speaker terminal
side and the voice coil side via a central groove, and the voice coil side. A pair of guide grooves
provided in the wall portion, a central wall provided substantially at the center of the wall portion
on the speaker terminal side, and an opening provided below the central wall provided on both
sides of the central wall By configuring the flexible wire with the sandwiching portion for
positioning, the flexible wire disposed upward can be easily moved to the sandwiching portion by
moving it downward, and the incorporation of the flexible wire into the speaker can be achieved.
This makes it possible to provide a speaker excellent in assembling work efficiency.
[0011]
According to a second aspect of the speaker of the present invention, the pair of guide grooves
provided in the wall portion on the voice coil side according to the first aspect is V-shaped, and
the guide grooves are V-shaped. Therefore, even if there is a slight positional deviation, the
guided flexible wire can be reliably and easily disposed at or near the bottom of the guide groove,
and the flexible wire can be easily positioned. A collision between the damper and the flexible
wire is suppressed to suppress the generation of abnormal noise and the damage of the flexible
wire.
[0012]
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3
According to a third aspect of the speaker of the present invention, the foot portion of the central
wall according to the first aspect is continued to the opening of the holding portion or in the
vicinity thereof or to the inside of the holding portion, and By moving the flexible wire
downward, it can be easily guided to the sandwiching part, and the flexible wire can be
incorporated reliably and with good workability.
[0013]
According to a fourth aspect of the speaker of the present invention, a flat portion is provided at
the outside of at least the central groove of the speaker according to the first aspect and the wall
portion on the side of the speaker terminal. While holding the flexible wire, the flat portion is
directed from the opening of the holding portion toward the back side (each outward from the
center side) by sliding the holding jig of the flexible wire, thereby easily using the jig It is possible
to provide a speaker having a configuration that contributes to the automatic assembly in which
the flexible wire can be disposed in the sandwiching portion.
[0014]
According to a fifth aspect of the method of manufacturing a speaker of the present invention,
the flexible wire disposed at the upper side is hooked to the concave portions of a pair of
projecting pieces provided with the concave portion at the tip. The speaker according to claim 4,
a method of manufacturing a speaker, wherein the flexible wire and / or the projecting piece are
pressed against and brought into sliding contact with the two flat portions as described, and the
flexible wire is guided to the inside from the holding portion opening. The present invention is
intended to improve the workability of a flexible wire having flexibility and to provide a method
of manufacturing a mechanically assembleable speaker.
[0015]
As described above, the speaker according to the present invention has a structure that allows
the flexible wire connecting the terminal and the voice coil to be easily fixed to the relay portion,
and the assembly operation in this relay portion can be easily performed to achieve ease of
assembly While being good, it is possible to provide an excellent speaker that prevents
generation of noise due to collision with other components (damper, diaphragm) due to the
amplitude of the flexible wire at the time of driving the speaker.
[0016]
Hereinafter, an embodiment of a speaker according to the present invention will be described
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with reference to FIGS. 1 to 3.
The same parts as in the prior art will be assigned the same reference numerals and explanations
thereof will be omitted.
[0017]
(First Embodiment) FIG. 1 is a perspective view of an assembly state in which a flexible wire
according to an embodiment of the present invention is arranged as viewed obliquely from
above, and FIG. 2 is a perspective view of a relay portion which is the main part. FIG. 3 is a top
view of the vicinity of the relay portion, which is the main portion.
[0018]
Referring to the figure, only differences from the prior art will be described. Reference numeral
11 denotes a relay unit, which corresponds to the relay unit 8 of the prior art.
[0019]
The relay portion 11 is integrally molded with the plastic frame 1 (the relay portion may be
separately provided by plastic molding or the like and may be attached to the frame 1).
[0020]
Further, the relay portion 11 is provided in such a manner that the wall portion 11b on the
speaker terminal 2 side and the wall portion 11c on the voice coil 3 side face each other with the
flat central groove 11a therebetween, and the wall portion 11c on the voice coil 3 side The inner
side of is inclined and provided, and further, a pair of V-shaped guide grooves 11d are formed.
[0021]
Furthermore, in the relay portion 11, a conical central wall 11e provided at the approximate
center of the wall 11b on the side of the speaker terminal 2 with a broadened foot and a central
wall 11e provided on both sides of the central wall 11e A sandwiching portion 11f for
positioning the flexible wire 6 provided with the opening 11g at the lower side, and a flat portion
11h provided along the wall portion 11b outside the wall portion 11b on the side of the speaker
terminal 2 are formed.
[0022]
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The flexible wire 6 is lifted to an appropriate position along the V-shaped guide groove 11d, and
when the speaker is driven, the flexible wire 6 collides with these due to the abnormal amplitude
of the diaphragm 5 or the damper 4 to generate noise. It is positioned by the wall portion 11c so
as to form an arc-shaped curve so as to be disposed at a position where it does not occur, and the
respective flexible wires 6 are laid along the respective guide grooves 11d. The flexible wires 6
will not contact each other.
[0023]
Further, the central wall 11e of the wall portion 11b also has a similar contact preventing
function.
[0024]
Next, the procedure of positioning work of the flexible wire 6 to the relay portion 11 will be
described. The flexible wire 6 cut into a predetermined length is moved along the central wall 11
e from the upper side to the lower side, It inserts from opening 11g.
The flexible wire 6 is not a single wire, but is formed by knitting a plurality of conducting wires
to provide asperities on the surface, so that the flexible wire 6 contacts the corners of the holding
portion 11 and does not come off for slight pulling or the like. become.
[0025]
At this time, the flexible wire 6 which is shaped to ride on the wall portion 11c is bent along the
inclination of the wall portion 11c and disposed along the bottom of the V-shaped guide groove
11d.
[0026]
As described above, the connection with the voice coil 3 and the position of the flexible wire 6
connected with the speaker terminal 2 are specified by the sandwiching portion 11 f and the wall
portion 11 c of the relay portion 11.
[0027]
In addition, it is also possible to make insertion of the flexible wire 6 to the clamping part 11f
easier by extending the foot of the central wall 11e to the opening 11g or the back of the
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clamping part in the vicinity or the opening, and providing it.
[0028]
The speaker configured as described above also contributes to assembly automation
(mechanization) of the speaker.
[0029]
That is, as shown in FIG. 1, the flexible wire 6 (cut to a predetermined length and movably held
downward by means not shown) disposed above the relay portion 11 is a V-shaped concave
portion 12b. The flexible wire insertion jig (not shown) is hooked with the pair of plate-like
projecting pieces 12a by the recess 12b, and the tip of the projecting pieces 12a of the flexible
wire insertion jig is the central groove 11a. And lower the flat wire 11h until it contacts the flat
portion 11h, and then slide the respective recess 12b on the central groove 11a and the flat
portion 11h so as to move the flexible wire 6 further from the opening 11g of the holding
portion 11f. By bringing the flexible wire 6 into contact, the arrangement of the flexible wire 6 on
the relay portion 11 can be extremely easily performed by the flexible wire insertion jig.
[0030]
As described above, the speaker according to the present invention has a structure that allows
the flexible wire connecting the terminal and the voice coil to be easily fixed to the relay portion,
and the assembly operation in this relay portion can be easily performed to achieve ease of
assembly. While being good, it is possible to provide an excellent speaker that prevents
generation of noise due to collision with other components (damper, diaphragm) due to the
amplitude of the flexible wire at the time of driving the speaker.
[0031]
The perspective view which saw the assembly situation which arranges the flexible wire in one
embodiment of the speaker of the present invention from the slanting upper part The perspective
view of the relay part which is the main part The top view near the relay part which is the main
part Half sectional view Top view in the state where the diaphragm seen from the upper part was
removed The perspective view of the relay part explaining attachment of the flexible wire to the
relay part which is the same part
Explanation of sign
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[0032]
Reference Signs List 1 frame 2 speaker terminal 2b terminal board 3 voice coil 6 flexible wire 11
relay portion 11a central groove 11b, 11c wall portion 11d guide groove 11e central wall 11f
sandwiching portion 11g opening 11h flat portion 12a projecting piece 12b recessed portion
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