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JP2005269338

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DESCRIPTION JP2005269338
The present invention provides a speaker device having a fixing structure of a terminal member
and a connecting member which can reduce the number of assembling steps of the speaker
device. A speaker device includes a terminal member, a connection member, a conductive
damper, and a diaphragm. The connecting member has a terminal mounting portion. The
terminal mounting portion has a protrusion and a connection portion. The connecting member
has a hole at its upper end and a fixing part at its lower end. The terminal member is mounted to
the terminal mounting portion. At this time, the projection is inserted into the hole and the fixing
portion is inserted into the groove. Solder the terminal member and the lead wire of the voice coil
and the conductive member. Thereafter, at the same time as bonding the connecting member and
the diaphragm with an adhesive, the terminal member is bonded to them. At the same time as
bonding the connecting member and the conductive damper with an adhesive, the terminal
member is bonded to them. This makes it possible to secure them in one adhesive application
operation. Therefore, the number of assembling steps of the speaker device can be reduced.
[Selected figure] Figure 7
Speaker apparatus and method of manufacturing the same
[0001]
The present invention relates to a fixing structure of a connecting member and a terminal
member in a speaker device.
[0002]
Conventionally, a flat magnet, a magnetic circuit including a flat plate and a pot type yoke, a
conductive terminal member, a conductive damper in which a conductive member is woven, a
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connecting member made of a resin material, a voice coil, a voice coil bobbin And an internal
magnet type speaker device provided with a vibration system including a frame.
[0003]
In such a speaker device, the connecting member movably supports the voice coil bobbin.
Therefore, it is necessary to electrically connect the lead wire of the voice coil and the conductive
damper through the vicinity of the connecting member.
[0004]
In addition, the wiring structure to the electrically conductive part on a damper which makes the
wiring operation etc. of the edge part of the electrically conductive part of an electrically
conductive damper, and a terminal etc. easy is known (for example, refer patent document 1).
[0005]
Japanese Utility Model 7-49908
[0006]
As problems to be solved by the present invention, the above-mentioned ones can be mentioned
as an example.
An object of the present invention is to provide a speaker device having a fixing structure of a
terminal member and a connecting member, which can reduce the number of assembling steps of
the speaker device.
[0007]
The invention according to claim 1 is a speaker device, wherein a frame, a damper whose outer
peripheral edge is supported by the frame, a connecting member attached to the damper and
movably supporting a voice coil bobbin, an amplifier A terminal member electrically connected to
the side and the voice coil side, and a projection protruding upward is formed on the upper end
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of the connection member, and a groove is formed on the lower end of the connection member A
hole is formed in the upper end portion of the terminal member, into which the protrusion is
inserted, and a fixed portion inserted into the groove is formed in the lower end portion of the
terminal member. The terminal member may be attached to the connection member in a state in
which the protrusion is inserted into the hole and the fixing portion is inserted into the groove.
[0008]
The invention according to claim 5 is a method of manufacturing a speaker device, wherein a
protrusion formed on an upper end of a connecting member is inserted into a hole formed on an
upper end of a terminal member, and the terminal member And fixing the terminal member to
the connecting member by inserting the fixing portion formed at the lower end of the terminal
into the groove formed at the lower end of the connecting member; and the terminal fixed to the
connecting member Soldering the connecting portion of the member and the conductive member
of the conductive damper, and soldering the lead wire of the voice coil to the upper end of the
terminal member, the upper end of the terminal member, and the connecting member
Simultaneously bonding the upper end portion and the inner peripheral edge portion of the
diaphragm, the lower end portion of the terminal member, the lower end portion of the
connecting member, and the inner peripheral edge portion of the conductive damper Bonding at
the same time The features.
[0009]
In one embodiment of the present invention, the speaker device includes a frame, a damper
whose outer peripheral edge is supported by the frame, a connecting member attached to the
damper and movably supporting a voice coil bobbin, an amplifier side, And a terminal member
electrically connected to the voice coil side, and a projection projecting upward is formed at the
upper end of the connection member, and a groove is formed at the lower end of the connection
member. The upper end portion of the terminal member is formed with a hole into which the
protrusion is inserted, and the lower end portion of the terminal member is formed with a fixed
portion inserted into the groove, The terminal member is attached to the connecting member in a
state in which the projection is inserted into the hole and the fixing portion is inserted into the
groove.
[0010]
In the above speaker device, a hole is formed in the upper end portion of the terminal member,
and a fixing portion is formed in the lower end portion of the terminal member.
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On the other hand, a projection is formed at the upper end of the connecting member, and a
groove is formed at the lower end of the connecting member.
Therefore, the terminal member can be physically fixed to the connecting member at two
positions by inserting the projection into the hole and inserting the fixing portion into the groove.
Thereby, the improvement of the joint strength of a terminal member and a connecting member
can be aimed at.
[0011]
In one aspect of the above speaker device, a protrusion protruding toward the central axis of the
connection member is formed in the groove, and an opening into which the protrusion is inserted
is formed in the fixed portion. And the protrusion is inserted into the opening.
[0012]
According to this aspect, in the groove of the connection member, a projection that protrudes
toward the stop axis is formed.
On the other hand, the fixed portion of the terminal member is formed with an opening into
which the protrusion is inserted.
And a terminal member is attached to a connection member in the state where a projection was
inserted in the opening.
For this reason, the terminal member is structured so as not to be easily separated from the
connecting member. Therefore, the bonding strength between the terminal member and the
connecting member can be further improved.
[0013]
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In another aspect of the above speaker device, the connection portion of the terminal member is
connected to the conductive member or the tinsel wire of the conductive damper. Therefore, by
attaching the terminal member to the connecting member, the connection portion of the terminal
member is connected to the conductive member or the tinsel wire of the conductive damper.
Since the terminal member is fixed to the connecting member, the terminal member does not rise
from the connecting member. For this reason, the soldering operation of the connection portion
of the terminal member and the conductive member or the tinsel wire of the conductive damper
can be easily performed. Moreover, thereby, a connection member, an electroconductive damper,
and a terminal member can be adhere ¦ attached simultaneously. Therefore, the connection
member, the conductive damper, and the terminal member can be fixed by one adhesive
application operation. Therefore, the number of assembling steps of the speaker device can be
reduced.
[0014]
In another aspect of the above speaker device, the inner peripheral edge portion of the
diaphragm is disposed at the upper end portion of the terminal member.
[0015]
According to this aspect, the upper end portion of the connecting member, the upper end portion
of the terminal member, and the inner peripheral edge portion of the diaphragm can be bonded
simultaneously.
Therefore, the connection member, the diaphragm, and the terminal member can be fixed by one
adhesive application operation. Therefore, the number of assembling steps of the speaker device
can be reduced.
[0016]
In another embodiment of the present invention, a method of manufacturing a speaker device
includes: inserting a projection formed on an upper end of a connecting member into a hole
formed on an upper end of the terminal member; And fixing the terminal member to the
connection member by inserting the fixing portion formed in the portion into the groove formed
in the lower end portion of the connection member; and the step of fixing the terminal member
to the connection member Soldering the connecting portion and the conductive member of the
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conductive damper, and soldering the lead wire of the voice coil to the upper end portion of the
terminal member, the upper end portion of the terminal member, and the connecting member
The step of simultaneously bonding the upper end portion and the inner peripheral edge portion
of the diaphragm, the lower end portion of the terminal member, the lower end portion of the
connection member, and the inner peripheral edge portion of the conductive damper are
simultaneously bonded And a process of
[0017]
According to the above-described method of manufacturing the speaker device, the protrusion
formed on the upper end of the connecting member is inserted into the hole formed on the upper
end of the terminal member and fixed on the lower end of the terminal member The terminal
member can be fixed to the connecting member by inserting the portion into a groove formed at
the lower end of the connecting member.
Thus, the bonding strength between the terminal member and the connecting member can be
improved.
[0018]
Moreover, the connection part of the terminal member fixed to the connection member and the
conductive member of the conductive damper can be soldered. Since the terminal member is
securely fixed without being lifted from the connecting member, the soldering work of the
connection portion of the terminal member and the conductive member of the conductive
damper can be easily performed. Moreover, it can solder to the part of the lead wire of the voice
coil connected to the upper end part of the terminal member. Thereby, the voice coil and the
conductive damper are electrically connected.
[0019]
Further, the upper end of the terminal member, the upper end of the connection member, and
the inner peripheral edge of the diaphragm can be bonded simultaneously. Therefore, the
connection member, the diaphragm, and the terminal member can be fixed by one adhesive
application operation. Thereby, the number of assembling steps of the speaker device can be
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reduced.
[0020]
Further, the lower end of the terminal member, the lower end of the connecting member, and the
inner peripheral edge of the conductive damper can be bonded simultaneously. Therefore, the
connection member, the conductive damper, and the terminal member can be fixed by one
adhesive application operation. Thereby, the number of assembling steps of the speaker device
can be reduced.
[0021]
Hereinafter, preferred embodiments of the present invention will be described with reference to
the drawings. In this embodiment, the fixing structure is provided at at least two places of the
terminal member and the connecting member.
[0022]
FIG. 1 schematically shows a schematic configuration of a speaker device 100 according to an
embodiment of the present invention. In addition, the speaker apparatus 100 of a present
Example can be used suitably as a vehicle-mounted speaker. FIG. 1 shows a cross-sectional view
when a plane including the central axis of the speaker device 100 is cut. FIG. 2 schematically
shows a plan view of the conductive damper 2a. Hereinafter, with reference to FIG. 1 and FIG. 2,
the structure etc. of the speaker apparatus 100 of a present Example are demonstrated.
[0023]
The speaker device 100 mainly includes a frame 10, a support member 9, a voice coil bobbin 3, a
connection member 8, a damper 2, a terminal member 21, a terminal member 22, a voice coil 4,
and a diaphragm 1, as shown in FIG. A magnetic circuit system 11 having a vibration system 12,
a pot type yoke 5, a magnet 6, and a plate 7, a dustproof cap 31, and other various members are
provided.
[0024]
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First, each component of the vibration system 12 will be described.
[0025]
Various components of the speaker device 100 are fixed to the frame 10 and serve to support
those components.
The frame 10 is made of a thermally conductive metallic material.
Therefore, the frame 10 has a function as a medium for transferring heat between the external
space of the speaker device 100 and the internal space thereof. The frame 10 has a pot-like or
pot-like shape opened upward, and a first flange portion 10 a for supporting the outer peripheral
edge of the diaphragm 1 formed at the top, and a support member formed at the central portion
9 having a second flange portion 10b for supporting 9, an opening 10c formed in the inner
peripheral edge portion, and a plurality of openings 10d formed in a side wall between the flange
portion 10b with the first flange portion 10a . A plurality of openings 10c are formed at regular
intervals in the circumferential direction of the inner peripheral edge portion. Each convex part
51c before deformation ¦ transformation of the pot type yoke 5 mentioned later is inserted in
each opening 10c.
[0026]
The support member 9 is made of, for example, a resin material, and has a substantially annular
shape in plan view. The support member 9 has a step-like shape in cross section, and has an
upper surface 9a and an upper surface 9b. The support member 9 is attached to the second
flange portion 10 b through a fixing member 61 such as, for example, an external thread or a
bolt.
[0027]
The voice coil bobbin 3 has a substantially cylindrical shape. The voice coil 4 is wound around
the outer peripheral wall of the lower end portion of the voice coil bobbin 3. Further, the inner
peripheral wall of the lower end portion of the voice coil bobbin 3 is opposed to the outer
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peripheral wall of the flat plate-like magnet 6 and the plate 7 at a constant interval. Further, the
outer peripheral wall of the lower end portion of the voice coil bobbin 3 is opposed to the outer
peripheral wall of the upper end portion of the pole piece 5 at a constant distance. An air gap
(magnetic gap 20) is formed between the inner peripheral wall of the upper end portion of the
pole piece 5 and the outer peripheral wall of the plate 8.
[0028]
The connecting member 8 includes, for example, a cylindrical portion 8a made of a resin material
and having a substantially cylindrical shape, and a bent portion 8b formed by being bent inward
from the upper end of the cylindrical portion 8a. It is formed. The inner peripheral edge portion
of the connecting member 8, that is, the inner peripheral edge portion of the bent portion 8 b is
fixed in the vicinity of the upper end of the outer peripheral wall of the voice coil bobbin 3. The
detailed configuration of the connecting member 8 having the fixing structure of the present
invention will be described later.
[0029]
The damper 2 has a conductive damper 2a and a normal damper 2b.
[0030]
The conductive damper 2a is disposed above the damper 2b.
The conductive damper 2a includes an opening 2ab, a plurality of projecting portions 2ac, an
elastic portion 2ad, and a plurality of conductive members 2ae.
[0031]
The opening 2ab is formed substantially at the center of the conductive damper 2a. The
connecting member 8 is inserted into the opening 2ad. The plurality of protrusions 2ac extend
outward from the outer peripheral edge of the conductive damper 2a to form a substantially
rectangular shape. Moreover, each protrusion part 2ac is formed in the position which becomes
symmetrical, respectively, as shown in FIG. Each protrusion 2ac and the outer peripheral edge of
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the conductive damper 2a are attached to the upper surface 9a of the support member 9
described above. The elastic portion 2 ad has a corrugated shape and plays a role of supporting
the connecting member 8 movably. The plurality of conductive members 2 ae are formed of
conductive members, and serve to electrically connect the lead wire 4 a of the voice coil 4 and
the terminal member 21. Each conductive member 2ae is woven in a flat net shape on the upper
surface side of the conductive damper 2a and from the inner peripheral edge of the conductive
damper 2a to the end side of the projecting portion 2ac. The conductive members 2ae on the
inner peripheral edge side of each conductive damper 2a are electrically connected to the
connection portions 21c of the positive / negative terminal members 21 respectively. On the
other hand, the conductive members 2ae on the outer peripheral edge side of each conductive
damper 2a are electrically connected to one end side of each of the plus / minus terminal
members 22.
[0032]
The normal damper 2b has a shape substantially the same as the conductive damper 2a.
However, unlike the conductive damper 2a, the normal damper 2b does not have the conductive
member 2ae. The outer peripheral edge of the normal damper 2 b is fixed to the upper surface 9
b of the support member 9, and the inner peripheral edge of the damper 2 b is fixed to the lower
end of the connecting member 8 via an adhesive 71.
[0033]
The terminal member 21 is a member such as a metal having conductivity, and a plurality of the
terminal members 21 are provided. Each terminal member 21 is attached to the connecting
member 8. The detailed configuration of the terminal member 21 having the fixing structure of
the present invention will be described later.
[0034]
The terminal member 22 is a member having conductivity, and a plurality of terminal members
22 are provided. Each terminal member 22 is fixed to the upper surface 9 a of the support
member 9. One end of each terminal member 22 is electrically connected to each conductive
member of the conductive damper 2a, and the other end of each terminal member 22 is
electrically connected to a relay wiring on the amplifier side (not shown).
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[0035]
The voice coil 4 has a pair of plus / minus lead wires (not shown). The lead wire on the positive
side is an input wiring of the L (or R) channel signal, and the lead wire on the negative side is an
input wiring of the ground (GND: ground) signal. Each lead wire is electrically connected to the
upper end of each terminal member 21 as described above. Therefore, an electric signal for one
channel is input from the amplifier side to the voice coil 4 through the terminal members 22, the
conductive members of the conductive damper 2a, the terminal members 21 and the lead wires.
[0036]
The diaphragm 1 has a substantially flat shape in order to reduce its thickness. Various materials
such as paper-based, polymer-based, and metal-based can be applied to the diaphragm 1 in
accordance with various applications. A separate edge portion 1 a is attached to the outer
peripheral edge portion of the diaphragm 1. The outer peripheral edge portion of the diaphragm
1 is fixed to the first flange portion 10a. On the other hand, the inner peripheral edge portion of
the diaphragm 1 is fixed in the vicinity of the upper end of the outer peripheral wall of the voice
coil bobbin 3. Further, the inner peripheral edge portion of the diaphragm 1 and the bent portion
8 b of the connecting member 8 are fixed via the adhesive 71.
[0037]
Next, each component of the magnetic circuit system 11 will be described.
[0038]
The magnetic circuit system 11 is configured as an internal magnet type magnetic circuit.
This magnetic circuit has a pot type yoke 5, a flat plate shaped magnet 6, and a flat plate shaped
plate 7.
[0039]
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The pot type yoke 5 has a main body 51 and a bottom 52, which are combined. The pot type
yoke 5 is attached to the frame 10.
[0040]
The main body portion 51 has a cylindrical portion 51a, a flange portion 51b, and a convex
portion 51c projecting upward from the upper surface of the flange portion 51b, and they are
integrally formed. The cylindrical portion 51a has a substantially cylindrical shape. The
cylindrical portion 51 a extends upward from the vicinity of the inner periphery of the flange
portion 51 b to the position near the plate 7. The flange portion 51b extends outward in a
substantially vertical direction from the vicinity of the lower end of the outer peripheral wall of
the cylindrical portion 51a. The inner peripheral edge portion of the frame 10 is attached to the
upper surface of the flange portion 51b. The convex portion 51c has a cylindrical shape, and a
plurality of convex portions 51c are formed on the upper surface of the flange portion 51b at a
constant interval. Each convex portion 51 c plays a role of fixing the inner peripheral edge
portion of the frame 10 by caulking.
[0041]
The bottom portion 52 has a cross-sectional shape in which a substantially concave shape is
reversed, and has a flat magnet 6 and a placement portion 52a having a size substantially the
same as the diameter of the flat plate 7. The outer peripheral edge of the bottom 52 is coupled to
the main body 51.
[0042]
The flat magnet 6 is fixed on the mounting portion 52 a of the bottom portion 52 of the pot type
yoke 5. The flat plate 7 is fixed on the magnet 6. In the magnetic circuit system 11, the magnet 6
and the plate 7 constitute a magnetic circuit, and the magnetic flux of the magnet 6 is
concentrated in the magnetic gap 20 formed between the outer peripheral wall of the plate 7 and
the inner peripheral wall of the pot type yoke 5. There is.
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[0043]
The dustproof cap 31 is attached to the upper end portion of the voice coil bobbin 3 via an
adhesive so as to close the upper surface of the voice coil bobbin 3. Thus, the dustproof cap 31
has a function of preventing foreign matter and the like from intruding into the speaker device
100.
[0044]
Next, various components will be described.
[0045]
The various components include members such as the packing 13 and the buffer member 14.
[0046]
The packing 13 is an annular member having an insulating property.
As a material of the packing 13, for example, a resin material is suitable.
The lower surface of the packing 13 is fixed to the first flange portion 10a and the outer
peripheral edge portion of the edge portion 1a. Thereby, the outer peripheral edge part of the
diaphragm 1 and the edge part 1a is clamped by the packing 13 and the 1st flange part 10a.
[0047]
The buffer member 14 has, for example, a function as a buffer material when the speaker device
100 is attached to a predetermined position of the vehicle, and also has a function of preventing
transmission of external vibration to the main body of the speaker device 100. For this reason, as
a material of the buffer member 14, for example, a member such as a cushioning sponge is
suitable. The buffer member 14 is rod-like in the state before attachment, and an adhesive is
applied on one side or a double-sided tape is attached. The buffer member 14 is attached to the
upper surface of the packing 13 via the adhesive or the double-sided tape in a state of being
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deformed in an annular shape.
[0048]
In the speaker device 100 described above, the electric signal output from the amplifier side is a
voice coil through each terminal portion 22, each conductive member of the conductive damper
2 a, each terminal member 21, and each lead wire of the voice coil 4. It is supplied to 4. As a
result, a driving force is generated in the voice coil 4 in the magnetic gap 20, and the diaphragm
1 is vibrated in the axial direction of the speaker device 100. Thus, the speaker device 100 emits
a sound wave in the direction of the arrow 60.
[0049]
[Fixing Structure of Terminal Member and Coupling Member, Etc.] First Embodiment Next,
referring to FIGS. 3 to 8, the terminal member 21 and the coupling member 8 according to the
first embodiment which characterizes the present invention. The fixed structure etc. will be
described in detail.
[0050]
The outline of the first embodiment will be described. In the first embodiment, the upper end
portion of the terminal member 21 is provided with a hole, and the lower end portion of the
terminal member 21 is provided with a fixing portion.
Further, a projection is provided on the upper end portion of the connecting member 8 and a
groove is provided in the vicinity of the lower end of the connecting member 8. Then, the
projection of the connecting member 8 is inserted into the hole of the terminal member 21, and
the fixing portion of the terminal member 21 is inserted into the groove of the connecting
member 8 to attach the terminal member 21 to the connecting member 8. Thus, the terminal
member 21 is reliably fixed to the connecting member 8 without fixing the terminal member 21
to the connecting member 8 with an adhesive.
[0051]
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Further, as a result, the upper end portion of the terminal member 21 is adhered to the bending
portion 8b of the connecting member 8 and the inner peripheral edge portion of the diaphragm
1 simultaneously with the adhesive. At the same time as bonding the outer peripheral wall of the
connecting member 8 and the inner peripheral edge portion of the conductive damper 2a with an
adhesive, the lower end portion of the terminal member 21 is bonded thereto. Thus, the number
of assembling steps of the speaker device can be reduced by completing the adhesive application
operation only once.
[0052]
FIG. 3A shows a perspective view of the terminal member 21 according to the first embodiment.
FIG.3 (b) shows the perspective view which expanded the local part of the connection part 21d
vicinity of Fig.3 (a). Moreover, FIG.3 (b) shows the local enlarged perspective view of the
connection part 21d in which slit 21da was formed. FIG.3 (c) shows the expansion perspective
view corresponding to the local vicinity of the connection part 21d of Fig.3 (a). Further, FIG. 3C is
a partially enlarged perspective view of the connection portion 21d which is applicable to the
terminal member 21 and in which the hole 21db is formed. FIG. 4 shows a perspective view of
the connecting member 8 according to the first embodiment. FIG. 5 (b) shows a plan view of the
connecting member 8 according to the first embodiment. FIG. 5A shows a cross-sectional view
taken along the cutting line A-A 'in FIG. 5B and an enlarged cross-sectional view of the broken
line portion in FIG. FIG. 6 is an enlarged perspective view of a local portion in the vicinity of the
terminal mounting portion of the connecting member 8. Moreover, FIG. 6 is a figure explaining
the method to attach the terminal member 21 to the connection member 8. As shown in FIG. FIG.
7A shows a partially enlarged cross-sectional view of the speaker device 100 in a state in which
the terminal member 21 is attached to the connecting member 8. FIG. 7B shows an enlarged
sectional view of a portion of the region E9 of FIG. 7A. FIG. 8 is a local enlarged perspective view
of the vicinity of the connection portion between the connection portion 21 d and the connection
member 8. Moreover, FIG. 8 is a figure explaining the method to connect the connection part 21d
and the lead wire 4a of the voice coil 4. As shown in FIG.
[0053]
[Configuration of Terminal Member] First, the configuration of the terminal member 21
according to the first embodiment will be described in detail with reference to FIG. The terminal
member 21 includes a top wall 21a, a connection portion 21d, an upright wall 21e, a fixed
portion 21b, a bent portion 21f, and a connection portion 21c.
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[0054]
The top wall 21a has a substantially rectangular shape, and has a hole 21ab in the approximate
center thereof. The projection 8 f of the connection member 8 described later is inserted into the
hole 21 ab. The connection portion 21 d is bent downward from one end side of the top wall 21
a. As shown in FIG. 3B, a slit 21da is formed in the connection portion 21d. The lead wire 4a of
the voice coil 4 is wound around the slit 21da. Thereby, the terminal member 21 and the lead
wire 4a of the voice coil 4 are electrically connected. In addition, you may make it form the hole
21db not only in this but in the connection part 21d, as shown to FIG. 3C. In this case, the lead
wire 4a of the voice coil 4 is wound around the hole 21db. The upright wall 21e extends
downward substantially vertically from the other end side of the top wall 21a. The fixing portion
21b has a substantially rectangular shape, and extends downward from the lower end portion of
the rising wall 21e. The fixing portion 21 b is inserted into a groove 8 v of the connecting
member 8 described later. The bent portion 21f extends outward substantially perpendicularly
from the lower end side of the rising wall 21a, that is, opposite to the extending direction of the
top wall 21a, and is bent downward substantially vertically at a predetermined position. Become.
The connection portion 21c extends outward substantially perpendicularly from the lower end
side of the bent portion 21f, that is, in the opposite direction to the extending direction of the top
wall 21a. The connection portion 21c is connected to the conductive member 2ae of the
conductive damper 2a.
[0055]
[Configuration of Connecting Member] Next, the configuration of the connecting member 8
according to the first embodiment will be described in detail with reference to FIGS. 4 and 5.
[0056]
The basic configuration of the connecting member 8 is as described above.
The connecting member 8 further includes an opening 8k, a projection 8f, a slit 8h, a slit 8g, a
groove 8v, and a flat surface 8p. A pair of projection 8f, slit 8h, slit 8g, and groove 8v
(hereinafter also referred to as "one set of terminal mounting portion 608") are spaced apart by a
constant distance in the circumferential direction of connecting member 8. Multiple are formed.
One terminal member 21 is attached to the pair of terminal attachment portions 608.
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[0057]
The opening 8 k is formed substantially at the center of the connecting member 8. The voice coil
bobbin 3 is inserted into the opening 8k. The protrusion 8 f has a substantially cylindrical shape
and protrudes upward from the upper end surface of the bent portion 8 b. The projection 8 f is
inserted into the hole 21 ab of the terminal member 21. The slit portion 8 h is a slit formed on
the upper end surface of the bending portion 8 b on the central axis O side. The connection
portion 21d of the terminal member 21 is disposed in the slit portion 8h. The slit portion 8g is a
slit formed on the outer peripheral wall of the cylindrical portion 8a. The slit portion 8g is
formed from the upper end portion of the outer peripheral wall of the cylindrical portion 8a to
the vicinity of the lower end of the outer peripheral wall of the cylindrical portion 8a. The
standing wall 21e of the terminal member 21 is disposed in the slit portion 8g. The groove 8 v is
a groove formed at a position below the slit portion 8 g. The fixing portion 21b of the terminal
member 21 is inserted into the groove 8v. The flat surface 8p of the bending portion 8b has
flatness, and the inner peripheral edge portion 1 of the diaphragm is attached thereto. The flat
surface 8p and the slit portion 8h (white portion) are sections shown in the enlarged cross
sectional view of FIG. 5A.
[0058]
Next, a method of attaching the terminal member 21 to the connecting member 8 will be
described with reference to FIG.
[0059]
In order to attach the terminal member 21 to the connecting member 8, the terminal member 21
is attached to the pair of terminal attachment portions 608 in the direction of the arrow in the
figure.
At this time, the projection 8 f of the connecting member 8 is inserted into the hole 21 ab of the
terminal member 21, and the fixing portion 21 b of the terminal member 21 is inserted into the
groove 8 v of the connecting member 8. While the upper end side of the terminal member 21 is
fixed to the connecting member 8 by the former, the lower end side of the terminal member 21 is
fixed to the connecting member 8 by the latter. Thus, the terminal member 21 is securely fixed to
the connecting member 8. Thereby, the lower surface of the connection portion 21c of the
terminal member 21 is connected to the conductive member 2ae (portion of the area E6) on the
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inner peripheral edge side of the conductive damper 2a.
[0060]
Therefore, according to the fixing structure of the terminal member 21 and the connecting
member 8, the terminal member 21 can be effectively prevented from floating from the
connecting member 8, and the soldering work of the connecting portion 21c and the conductive
damper 2a can be facilitated. It can be carried out.
[0061]
Thus, the state in which the terminal member 21 is attached to the connecting member 8 and the
component parts of the speaker device 100 are attached is shown in FIG.
[0062]
In this state, as shown in FIG. 7B and FIG. 8, the connecting portion 21d is disposed in the slit
portion 8h, and the projection 21 of the connecting member 8 is formed in the hole 21da of the
connecting portion 21. It is inserted.
The lower surface of the top wall 21a is in contact with the upper end surface of the bending
portion 8b.
The standing wall 21 e is disposed in the slit portion 8 g of the connecting member 8. The fixing
portion 21b is inserted into the groove 8v. As shown in FIGS. 7B and 8, the lead wire 4a drawn
from the voice coil 4 is drawn along the outer peripheral wall of the voice coil bobbin 3, the
upper surface of the bending portion 8b, and the slit portion 8h. The connection portion 21 d of
the member 21 is electrically connected by soldering. On the other hand, as shown in FIG. 7A, the
connection portion 21c of the terminal member 21 is electrically connected to the conductive
member 2ae (refer to the broken line) on the inner peripheral edge side of the conductive
damper 2a by soldering. .
[0063]
Further, as shown in FIG. 7B, the connecting portion 21d of the terminal member 21 connected
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to the lead wire 4a through the solder 200, the bent portion 8b of the connecting member 8 and
the inner peripheral edge portion of the diaphragm 1 An adhesive 71 is applied between them.
As a method of applying the adhesive 71, the upper end portion of the terminal member 21 is
adhered to the bending portion 8 b of the connecting member 8 and the inner peripheral edge
portion of the diaphragm 1 simultaneously with the adhesive 71. I have to. Thereby, the upper
end portion of the terminal member 21, the connecting member 8 and the diaphragm 1 are fixed.
[0064]
Further, as shown in FIG. 7A, the connecting portion 21c of the terminal member 21 connected
to the conductive member 2ae via the solder 200, the connecting member 8 (not shown) near the
connecting portion 21c, and the conductive member An adhesive 71 is applied between 2ae and
2ae. As a method of applying the adhesive 71, the outer peripheral wall of the cylindrical portion
8a of the connecting member 8 and the inner peripheral edge portion of the conductive damper
2a are bonded with the adhesive 71, and at the same time, the connecting portion 21c of the
terminal member 21 is It is made to adhere. Thus, the lower end portion of the terminal member
21, the connecting member 8, and the conductive damper 2 a are fixed.
[0065]
Therefore, the upper end portion of the terminal member 21, the connecting member 8 and the
diaphragm 1 can be fixed by one application operation of the adhesive 71, and the lower end
portion of the terminal member 21 and the connecting member 8 And the conductive damper 2a
can be fixed. Thereby, the number of assembling steps of the speaker device 100 can be reduced.
[0066]
Second Embodiment Next, the fixing structure and the like of the terminal member 21 'and the
connecting member 8' according to a second embodiment which characterizes the present
invention will be described in detail with reference to FIGS. In the second embodiment, fixing of
the terminal member 21 'and the connecting member 8' is made stronger than in the first
embodiment, and the same effect as in the first embodiment can be obtained.
01-05-2019
19
[0067]
FIG. 9 shows a perspective view of a terminal member 21 'according to the second embodiment.
FIG. 10 shows a perspective view of a connecting member 8 'according to the second
embodiment. FIG. 11 (b) shows a plan view of the connecting member 8 ′ according to the
second embodiment. FIG. 11A shows a cross-sectional view taken along the cutting line C-C ′ in
FIG. 11B and an enlarged cross-sectional view of the broken line portion in FIG. FIG. 12 shows an
enlarged perspective view of a local portion in the vicinity of the terminal mounting portion of
the connecting member 8 ′ and an enlarged sectional view of the broken line portion in FIG. 12.
Moreover, FIG. 12 is a figure explaining the method to attach terminal member 21 'to connection
member 8'. FIG. 13A shows a partially enlarged cross-sectional view of the speaker device 100 in
a state where the terminal member 21 'is attached to the connecting member 8'. FIG. 13B shows
an enlarged cross-sectional view of a portion of the area E15 of FIG.
[0068]
[Configuration of Terminal Member 21 '] First, the configuration of the terminal member 21'
according to the second embodiment will be described with reference to FIG. In the description of
the terminal member 21 ', the same components as those of the terminal member 21 according
to the first embodiment are designated by the same reference numerals, and the description
thereof will be omitted.
[0069]
The terminal member 21 'has substantially the same structure as the terminal member 21 of the
first embodiment. However, the terminal member 21 ′ is different from the terminal member
21 in that the terminal member 21 ′ has an opening 21 ba substantially at the center of the
fixed portion 21 b. The projection 8s of the connecting member 8 'described later is inserted into
the opening 21ba.
[0070]
[Configuration of Connecting Member 8 '] Next, the configuration of the connecting member 8'
01-05-2019
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according to the second embodiment will be described with reference to FIGS. 10 and 11. FIG. In
the description of the connecting member 8 ', the same components as those of the connecting
member 8 according to the first embodiment are designated by the same reference numerals,
and the description thereof is omitted.
[0071]
The connecting member 8 'has substantially the same structure as the connecting member 8 of
the first embodiment. However, the connecting member 8 ′ differs from the connecting member
8 in that as shown in the drawing, the outer sidewall in the groove 8 v has a protrusion 8 s
having a substantially prismatic shape. The projection 8s protrudes toward the central axis O as
shown in FIG. The projection 8s is inserted into the opening 21ba of the terminal member 21
'and has a function of fixing the fixing portion 21b of the terminal member 21'.
[0072]
Next, referring to FIG. 12, a method of attaching the terminal member 21 'to the connecting
member 8' will be described.
[0073]
In order to attach the terminal member 21 'to the connecting member 8', the terminal member
21 'is attached to the pair of terminal attachment portions 608 in the direction of the arrow in
the figure.
At this time, the projection 8f of the connecting member 8 'is inserted into the hole 21ab of the
terminal member 21'. Thereby, the upper end side of the terminal member 21 'is fixed to the
connecting member 8'. Further, as shown in the enlarged cross-sectional view in the drawing, the
fixing portion 21b of the terminal member 21 'is inserted into the groove 8v of the connecting
member 8' in the arrow direction. Thus, the protrusion 8s fits into the opening 21ba. Thus, the
fixing portion 21b of the terminal member 21 'is fixed by the projection 8s and the groove 8v of
the connecting member 8'. Therefore, according to this fixing structure, the bonding strength
between the terminal member 21 'and the connecting member 8' can be further improved as
compared with the first embodiment. Further, thereby, the lower surface of the connection
portion 21c of the terminal member 21 'is connected to the conductive member 2ae (portion of
the area E6) on the inner peripheral edge side of the conductive damper 2a. Therefore, according
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to the fixing structure of the terminal member 21 'and the connecting member 8', as is
understood with reference to FIG. 13 (b), the terminal member 21 'is effectively lifted from the
connecting member 8'. Thus, the soldering work between the connection portion 21c and the
conductive damper 2a can be easily performed. Thus, the state in which the terminal member 21
'is attached to the connecting member 8' and the components of the speaker device 100 are
attached is shown in FIG. 13 (a). The speaker device shown in FIG. 13A has substantially the
same configuration as the speaker device of the first embodiment shown in FIG. 7A, and the
description thereof will be omitted.
[0074]
As described above, according to the fixing structure of the terminal member 21 ′ and the
connecting member 8 ′ according to the second embodiment, the same effect as that of the first
embodiment can be obtained, and the number of assembling steps of the speaker device can be
reduced. .
[0075]
[Modified Example of Connecting Member] The configuration of the groove of the connecting
member capable of fixing the above-described terminal members 21 and 21 'can be variously
modified.
[0076]
For example, in the connecting members 8 and 8 'according to the first and second embodiments
described above, the groove 8v is formed for each pair of terminal mounting portions 608, but
the present invention is not limited to this. The groove may be formed over the entire
circumference of the outer peripheral wall of the cylindrical portion 8a of 8 '.
FIG. 14A schematically shows a perspective view of the connecting member 900 in which such a
groove 8va is formed.
FIG. 14 (b) shows a local cross-sectional view along the cutting line D-D 'of FIG. 14 (a).
[0077]
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22
The connecting member 900 has substantially the same structure as the connecting members 8
and 8 'according to the first and second embodiments, but does not have the slit portion 8g.
Instead, a groove 8va is formed in the vicinity of the lower end of the cylindrical portion 8a and
along the circumferential direction of the outer peripheral wall of the cylindrical portion 8a. The
fixing portion 21b such as the terminal member 21 is inserted into the groove 8va. In addition,
the mounting state of the terminal member 21 etc. to the connection member 900 is abbreviate ¦
omitted. Thus, the lower end portions of the terminal members 21 and the like can be fixed, and
the same effect as the connecting members 8 and 8 'according to the first and second
embodiments can be obtained. Thus, when manufacturing the mold for the connecting member
900, the groove 8va can be lathe-processed, so that the cost of the mold can be reduced.
[0078]
Further, the shape and the like of the groove formed in the connecting member can be variously
modified. The perspective view of the connection member 901 which has one form of such a
groove ¦ channel in FIG.14 (c) is shown typically. FIG. 14 (d) shows a local cross-sectional view
along the section line E-E 'in FIG. 14 (a).
[0079]
The connecting member 901 has substantially the same structure as the connecting members 8
and 8 'according to the first and second embodiments, but does not have the slit portion 8g.
Instead, the connecting member 901 has a groove 8vb having the illustrated shape. The fixing
portion 21b such as the terminal member 21 is inserted into the groove 8vb. In addition, the
mounting state of the terminal member 21 etc. to the connection member 901 is abbreviate ¦
omitted. Thus, the lower end portions of the terminal members 21 and the like can be fixed, and
the same effect as the connecting members 8 and 8 'according to the first and second
embodiments can be obtained.
[0080]
[Other Application Examples] In the first and second embodiments described above, the present
invention is applied to the speaker apparatus 100 of the type in which an electric signal from the
amplifier side is input to the voice coil 4 side through the conductive damper 2a or the like. did.
01-05-2019
23
However, the present invention is not limited to this, and as shown in FIGS. 15 and 16, the
speaker devices 902 and 903 of the type in which the electric signal from the amplifier side is
input to the voice coil 4 side through the tinsel wire 201 etc. The invention can be applied. FIG.
15 shows a cross-sectional view of a loudspeaker device 902 having a tinsel cord 201 and a
plurality of conventional dampers 2. FIG. 16 shows a cross-sectional view of a speaker device
903 having a tinsel cord 201 and one normal damper 2. FIGS. 17A to 17D are perspective views
schematically showing the configurations of the terminal members 904 to 907 applicable to the
speaker devices 902 and 903, respectively.
[0081]
First, prior to describing the configurations of the speaker devices 902 and 903, the
configurations of the terminal members 904 to 907 will be described. FIG. 17A shows a
perspective view of the terminal member 904. FIG. FIG. 17 (b) shows a perspective view of the
terminal member 905. FIG. 17 (c) shows a perspective view of the terminal member 906. FIG. 17
(d) shows a perspective view of the terminal member 907.
[0082]
First, the configuration of the terminal member 904 will be described. When the terminal
member 904 is compared with the above-described terminal member 21, the former does not
have the bending portion 21 f and the connection portion 21 c which are the components of the
latter. Instead, the former has a connecting portion 21g and a plurality of fixing portions 21b. As
shown in FIG. 17A, the connection portion 21g extends outward from the lower end portion of
the upright wall 21e, that is, in the opposite direction to the extending direction of the top wall
21a. A hole 21ga is formed substantially at the center of the connection portion 21g. One end
side of the tinsel wire 201 is wound around the hole 21 ga. The plurality of fixing portions 21 b
are inserted into the groove 8 v of the connecting member 8. In this case, the groove 8v needs to
be formed slightly larger so that the plurality of fixing portions 21b can be inserted.
[0083]
Next, the configuration of the terminal member 905 will be described. The terminal member 905
has substantially the same configuration as that of the terminal member 904, but unlike the
latter, the hole 21ba is formed in the approximate center of each connection portion 21b unlike
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the latter. The projection 8s formed in the groove 8v of the connecting member 8 is inserted into
the hole 21ba. In this case, the grooves 8v need to be formed slightly larger so that the plurality
of fixing portions 21b can be inserted, and the plurality of protrusions 8s are formed on the
outer side wall of the grooves 8v corresponding to the respective holes 21ba. There is a need to.
Thus, the lower end portion of the terminal member 905 can be securely fixed to the connecting
member 8.
[0084]
Next, the configuration of the terminal member 906 will be described. The terminal member 906
is substantially the same as the configuration of the terminal member 904. However, unlike the
latter, the slit 21gb is formed in the connecting portion 21g instead of the hole 21ga. One end
side of the tinsel wire 201 is wound around the slit 21 gb.
[0085]
Next, the configuration of the terminal member 907 will be described. The terminal member 907
has substantially the same configuration as that of the terminal member 906, but unlike the
latter, the hole 21ba is formed in the approximate center of each connection portion 21b unlike
the latter. The projection 8s formed in the groove 8v of the connecting member 8 is inserted into
the hole 21ba. In this case, the grooves 8v need to be formed slightly larger so that the plurality
of fixing portions 21b can be inserted, and the plurality of protrusions 8s are formed on the
outer side wall of the grooves 8v corresponding to the respective holes 21ba. There is a need to.
Thus, the lower end portion of the terminal member 907 can be securely fixed to the connecting
member 8.
[0086]
When any one of the terminal members 904 to 907 described above (hereinafter referred to as
"terminal member 910") is applied to the speaker device 902 or 903, one end of the tinsel wire
201 is a hole 21ga or a slit By winding around 21 gb, the tinsel wire 201 and its terminal
member 910 can be easily electrically connected.
[0087]
Next, with reference to FIGS. 15 and 16, the configuration and the like of speaker devices 902
and 903 to which such a terminal member 910 is applied will be briefly described.
01-05-2019
25
[0088]
The speaker device 902 has substantially the same configuration as the speaker device 100.
However, unlike the speaker device 100, the speaker device 902 does not have the conductive
damper 2a.
Instead, the speaker device 902 has a plurality of normal dampers 2 b and tinsel cords 201.
Therefore, in the speaker device 902, the terminal member 22 connected to the amplifier side,
the tinsel wire 201, the terminal member 910, and the voice coil 4 are electrically connected.
[0089]
That is, as shown in the drawing, one end side of the tinsel wire 201 is connected to the
connection portion 21 g of the terminal member 910. Then, the contact portion between the
connection portion 21 g and the tinsel wire 201 is soldered. On the other hand, the other end
side of the tinsel cord 201 is connected to one end side of the terminal member 22. Thereby, in
the speaker device 902, the relay wiring on the amplifier side, the terminal member 22, the tinsel
wire 201, the terminal member 910, and the lead wire 4a of the voice coil 4 are electrically
connected.
[0090]
Further, in the speaker device 902, the terminal member 910 is securely fixed to the connecting
member 8 in the same manner as in the first and second embodiments described above.
Therefore, in the speaker device 902, the upper end portion of the terminal member 910 can be
adhered to the bending portion 8b of the connection member 8 and the inner peripheral edge
portion of the diaphragm 1 simultaneously with the adhesive 71. Further, after soldering the
tinsel wire 201 to the connection portion 21g of the terminal member 910, the terminal member
910 can be adhered to the tinsel wire 201 and the like simultaneously with reinforcing the
portion with the adhesive 71. Therefore, the upper end portion of the terminal member 910, the
connection member 8, and the diaphragm 1 can be fixed by one application operation of the
01-05-2019
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adhesive 71, and the connection portion 21g of the terminal member 910 and the tinsel wire It
can be fixed to 201 mag. Thus, the number of assembling steps of the speaker device 902 can be
reduced.
[0091]
The speaker device 903 has substantially the same configuration as the speaker device 902.
However, the former has only one ordinary damper 2 and this point is different from the latter.
That is, the present invention is also applicable to a speaker device 903 having one normal
damper 2. Therefore, the speaker device 903 can obtain the same effect as the above-described
speaker device 902.
[0092]
[Method of Manufacturing Speaker Device 100] Next, a method of manufacturing the speaker
device 100 of the present invention will be described with reference to FIGS. FIG. 18 shows a
flowchart of a method of manufacturing the speaker device 100. 19 and 20 show a
manufacturing process of the speaker device 100. FIG. FIG. 21A shows a local enlarged crosssectional view around the arrow Y1 of FIG. FIG. 21A is a partial enlarged cross-sectional view of a
state in which the lead wire 4 a of the voice coil 4 and the connection portion 21 d of the
terminal member 21 are soldered with the solder 200. FIG. 21 (b) is a local enlarged crosssectional view corresponding to FIG. 21 (a). FIG. 21 (b) is a local enlarged cross-sectional view of
a state in which the connection portion 21d and the lead wire 4a connected by soldering are
reinforced with an adhesive 71. FIG. 22A shows a local enlarged cross-sectional view in the
vicinity of the arrow Y2 in FIG. FIG. 22A is a partial enlarged cross-sectional view of a state in
which the conductive member 2ae of the conductive damper 2a and the connection portion 21c
of the terminal member 21 are soldered. FIG. 22 (b) is a local enlarged cross-sectional view
corresponding to FIG. 22 (a). FIG. 22 (b) is a local enlarged cross-sectional view of a state in
which the portions of the connection portion 21c and the conductive member 2ae connected by
soldering are reinforced with the adhesive 71.
[0093]
First, as shown in FIG. 19, in the speaker unit 950 assembled to a certain extent, the terminal
member 21 is attached to the terminal mounting portion 608 of the connecting member 8 (step
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S1). Specifically, the projection 8 f of the connecting member 8 is inserted into the hole 21 ab of
the terminal member 21, and the fixing portion 21 b of the terminal member 21 is inserted into
the groove 8 v of the connecting member 8. Thereby, as shown in FIG. 20, the terminal member
21 is fixed to the connection member 8 in a state where the connection portion 21c of the
terminal member 21 is connected to the conductive member 2ae of the conductive damper 2a.
Therefore, according to the fixing structure of the terminal member 21 and the connecting
member 8, as described above, the terminal member 21 and the connecting member 8 are
physically fixed at two positions. Therefore, the terminal member 21 does not rise from the
connecting member 8. Therefore, the soldering operation of the connection portion 21c of the
terminal member 21 and the conductive member 2ae of the conductive damper 2a can be easily
performed.
[0094]
Next, the terminal member is soldered to the lead wire 4a of the voice coil 4 and the conductive
damper 2a (step S2). Specifically, the lead wire 4a of the voice coil 4 is wound around the hole
21ab of the connection portion 21a of the terminal member 21 (see FIG. 8), and as shown in FIG.
20 and FIG. Solder it. Moreover, as shown to FIG. 20 and FIG. 22 (a), it solders to the part of the
connection part 21c of the terminal member 21, and the electroconductive member 2ae of the
electroconductive damper 2a. Thereby, the voice coil 4 and the conductive damper 2 a are
electrically connected via the terminal member 21.
[0095]
Next, as shown in FIG. 21 (b), the upper end portion of the terminal member 21 is attached to the
bent portion 8b of the connecting member 8 and the inner peripheral edge portion of the
diaphragm 1 simultaneously with the adhesive 71. Bonding (Step S3). Further, as shown in FIG.
22 (b), the lower end of the terminal member 21 is bonded to the outer peripheral wall of the
cylindrical portion 8a of the connecting member 8 and the inner peripheral edge portion of the
conductive damper 2a simultaneously with bonding. The parts are adhered (step S3). Thus, the
upper end portion of the terminal member 21, the connecting member 8 and the diaphragm 1
can be fixed by one application operation of the adhesive 71, and the lower end portion of the
terminal member 21 and the connecting member 8 and the conductive damper 2a can be fixed.
Thereby, the number of assembling steps of the speaker device 100 can be reduced.
[0096]
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28
Next, the speaker device 100 shown in FIG. 1 is manufactured by attaching various other
components.
[0097]
FIG. 1 shows a cross-sectional view of a loudspeaker device according to an embodiment of the
present invention.
The top view of the electrically conductive damper which concerns on a present Example is
shown. The perspective view of the terminal member which concerns on 1st Example is shown.
The perspective view of the connection member which concerns on 1st Example is shown. The
cross-sectional view and top view of a connection member concerning a 1st example are shown.
It is a local perspective view of the connection member etc. which concern on 1st Example which
shows the method of attaching a terminal member to a connection member. It is a local sectional
view of a speaker device concerning a 1st example in the state where a terminal member was
attached to a connection member. It is a local perspective view of the connection member etc.
which concern on 1st Example which shows the connection method of a lead wire and a terminal
member. The perspective view of the terminal member which concerns on 2nd Example is
shown. The perspective view of the connection member which concerns on 2nd Example is
shown. Sectional drawing and the top view of a connection member concerning a 2nd example
are shown. It is a local perspective view of the connection member etc. which concern on 2nd
Example which shows the method of attaching a terminal member to a connection member. It is
a local sectional view of a speaker device concerning a 2nd example in the state where a terminal
member was attached to a connection member. The perspective view and sectional drawing of
the connection member which concerns on a modification are shown. The sectional view of the
speaker apparatus which applied the fixed structure of the present invention to the speaker
apparatus which has a tinsel line is shown. The sectional view of the speaker apparatus which
applied the fixed structure of the present invention to the speaker apparatus which has a tinsel
line is shown. It is a perspective view which shows the various forms of the terminal member
applicable to the speaker apparatus of FIG.15 and FIG.16. 3 shows a flowchart of a method of
manufacturing a speaker device. Sectional drawing of the manufacturing process of a speaker
apparatus is shown. Sectional drawing of the manufacturing process of a speaker apparatus is
shown. The local sectional view of a speaker apparatus is shown. The local sectional view of a
speaker apparatus is shown.
Explanation of sign
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[0098]
Reference Signs List 1 diaphragm 2a conductive damper 2ae conductive member 4 voice coil 4a
lead wire 8, 8 ', 900, 901 connecting member 8f, 8s protrusion 8v groove 21, 21' 904, 905, 906,
907 terminal member 21ab hole 21b fixed Parts 21c, 21d Connection part 71 Adhesive 100,
902, 903 Speaker device 200 Solder 201 Tin wire 950 Speaker unit
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