close

Вход

Забыли?

вход по аккаунту

?

JP2005295354

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2005295354
PROBLEM TO BE SOLVED: To provide a diaphragm easy to manufacture and having good
characteristics. SOLUTION: An outer peripheral side of a substantially truncated vibrating portion
410 having a through hole 411 at a substantially central portion is expanded toward one surface
side, and a thick portion 413 is thick on the outer surface side in a circumferential direction.
Molded into a state of protruding into the The bonding portion 421 on the inner peripheral side
of the substantially annular shaped edge portion 420 is attached to the outer surface side of the
outer peripheral edge of the vibrating portion 410 with an adhesive to form the diaphragm 400.
The number of parts can be reduced, the number of operation steps for attaching another
member can be reduced, and the productivity can be easily improved, as compared with the
configuration in which another member is attached for mass balance. Since the thick portion 413
is integrally formed in advance at the time of molding of the vibrating portion 410, for example,
variations in the amount of adhesive due to adhesion and variations in mounting position do not
occur, and the characteristics can be easily stabilized. [Selected figure] Figure 1
Diaphragm, method for manufacturing the same, and speaker device
[0001]
The present invention relates to a diaphragm in which a substantially annular edge portion is
attached to the outer peripheral edge of a vibrating portion that spreads to one side, a method of
manufacturing the same, and a speaker device.
[0002]
2. Description of the Related Art Conventionally, as a diaphragm that constitutes a speaker
device, a configuration is known in which a balancer is provided to correct an unbalance in
12-05-2019
1
moment of inertia (see, for example, Patent Document 1).
[0003]
In the case described in Patent Document 1, a balancer having a substantially flat plate shape
and a plurality of slits formed therein is separately attached to a cone surface on an outer
peripheral portion of a speaker eccentric cone whose center hole is eccentric.
[0004]
JP-A-11-155189 (page 3 right column-page 5 left column, FIGS. 2 and 3)
[0005]
However, in the configuration described in Patent Document 1 above, since a separate balancer is
attached, the number of parts is increased, the work process for attaching the balancer is also
increased, and improvement in productivity can not be achieved. The problem that there is a
possibility that the variation in characteristics may occur due to the variation in adhesion is
mentioned as an example.
[0006]
An object of the present invention is to provide a diaphragm that is easy to manufacture and can
obtain good characteristics in view of the above-described circumstances and the like, a method
of manufacturing the same, and a speaker device.
[0007]
The invention according to claim 1 is a diaphragm having a substantially annular edge portion
attached to the outer peripheral edge of the vibration portion which spreads on one side, and at
least one of the vibration portion and the edge portion One of them is a diaphragm characterized
in that a part in a circumferential direction in a portion joined together is formed thick.
[0008]
The invention according to claim 4 is a diaphragm having a substantially annular edge portion
attached to the outer peripheral edge of the vibration portion which spreads on one side, and the
bonding area of the vibration portion and the edge portion is circumferential. It is a diaphragm
characterized by being attached in a state different in direction.
12-05-2019
2
[0009]
The invention according to claim 7 is a diaphragm having a substantially annular edge portion
attached to the outer peripheral edge of the vibration portion which spreads on one side, and at
least one of the vibration portion and the edge portion One of the diaphragms is characterized in
that the specific gravity of a part in the circumferential direction in the portions joined together
is formed large.
[0010]
The invention according to claim 9 is a diaphragm having a substantially annular edge portion
attached with an adhesive to the outer peripheral edge of the vibration portion which spreads on
one side, and bonding of the vibration portion and the edge portion The diaphragm is
characterized in that the amount of the adhesive is large in a partial region in the circumferential
direction of the portion.
[0011]
The invention according to claim 10 is a manufacturing method of a diaphragm in which a
substantially annular edge portion is attached to an outer peripheral edge of a vibrating portion
expanding on one surface side to manufacture a diaphragm, which is the outer peripheral edge of
the vibrating portion A method of manufacturing a diaphragm characterized in that a part in the
circumferential direction is formed thick, and an inner periphery of the edge part is joined to an
outer peripheral edge where a part of the vibrating part is formed thick. .
[0012]
The invention according to claim 11 is a manufacturing method of a diaphragm in which a
substantially annular edge portion is attached to an outer peripheral edge of a vibrating portion
which spreads on one side to manufacture a diaphragm, which comprises the inner peripheral
edge of the edge portion. A method of manufacturing a diaphragm characterized in that a part in
the circumferential direction is formed thick and an inner peripheral edge where a part of the
edge part is formed thick is joined to an outer peripheral edge of the vibrating part. .
[0013]
The invention according to claim 12 is a manufacturing method of a diaphragm in which a
substantially annular edge portion is attached to an outer peripheral edge of a vibrating portion
expanding on one side to manufacture a vibrating plate, wherein the vibrating portion and the
edge portion The present invention is a method of manufacturing a diaphragm characterized in
that the bonding area of is made different in the circumferential direction.
12-05-2019
3
[0014]
The invention according to claim 13 is a diaphragm having a substantially annular edge portion
attached to the outer peripheral edge of the vibration portion which spreads on one side, and at
least one of the vibration portion and the edge portion A method of manufacturing a diaphragm
characterized in that a member having a heavy specific gravity is mixed into a part in the
circumferential direction of the parts to be joined to one another.
[0015]
The invention according to claim 14 is a diaphragm having a substantially annular edge portion
attached to the outer peripheral edge of the vibration portion which spreads on one side, and the
circumferential direction of the joint portion between the vibration portion and the edge The
method of manufacturing a diaphragm is characterized in that bonding is performed by
increasing the amount of the adhesive in a part of the area in.
[0016]
The invention according to claim 15 holds the diaphragm according to any one of claims 1 to 9, a
voice coil attached to the diaphragm, a magnetic body, the diaphragm, and the magnetic body.
And a frame provided with a yoke that forms a magnetic circuit with the magnetic body.
[0017]
The invention according to claim 16 is a diaphragm manufactured by the method for
manufacturing a diaphragm according to any one of claims 10 to 14, a voice coil attached to the
diaphragm, a magnetic body, and According to another aspect of the present invention, there is
provided a speaker device including: a frame including a yoke that holds the diaphragm and the
magnetic body and forms a magnetic circuit with the magnetic body.
[0018]
Hereinafter, the configuration of an embodiment of the speaker device of the present invention
will be described with reference to the drawings.
In the present embodiment, although a cone type speaker device is illustrated, the present
invention is not limited to this.
12-05-2019
4
FIG. 1 is a cross-sectional view showing a speaker apparatus according to an embodiment of the
present invention.
FIG. 2 is a partially cutaway sectional view showing a diaphragm that constitutes a speaker
device.
[0019]
[Structure of Speaker Device] In FIG. 1, reference numeral 100 denotes a speaker device. The
speaker device 100 outputs sound data, which is an electrical signal from a playback device
connected electrically, by sounding.
The speaker device 100 includes a frame 200, a magnet 300 as a magnetic body constituting a
magnetic circuit, a diaphragm 400, a voice coil 500, and a protective member (not shown).
[0020]
The frame 200 is made of, for example, a hard synthetic resin or a lightweight metal material
such as an aluminum alloy.
The frame 200 includes a substantially concave main body portion 210 expanding toward one
surface, and a magnetic body 220 which is a yoke constituting a magnetic circuit integrally
provided on the main body portion 210. .
[0021]
The main body portion 210 has a substantially cylindrical bottom portion 212 in which a
substantially circular opening 211 is formed substantially at the center of the bottom surface and
is opened toward one side.
12-05-2019
5
On the outer peripheral edge of the bottom portion 212, a plurality of bridge portions 213 are
provided in a substantially radial manner in a state where the bridge portions 213 expand at the
tip end side.
Furthermore, at the tip of the bridge portion 213, a mounting step portion 214 substantially in a
ring shape and substantially parallel to the bottom surface of the bottom portion 212 is provided
in series.
A positioning cylindrical portion 215 formed in a cylindrical shape substantially coaxial with the
bottom portion 212 is provided in series on the outer peripheral edge of the mounting step
portion 214.
In addition, a terminal 216 having a terminal 216A to which sound data of an electrical signal is
input is integrally attached to the main body portion 210.
[0022]
The magnetic body 220 includes an upper yoke 221 and a lower yoke 222.
The upper yoke 221 is formed in a substantially ring shape of a magnetic material.
The upper yoke 221 is integrally attached to the bottom surface of the main body 210 by, for
example, an adhesive in a state where the inner periphery is coaxial with the opening 211 of the
bottom 212.
The lower yoke 222 is formed of, for example, the same material as the upper yoke 221.
The lower yoke 222 is formed in a substantially convex shape having a projecting portion 222B
substantially cylindrically on one surface side substantially at the center of a plate portion 222A
on a substantially disc.
12-05-2019
6
The lower yoke 222 is integrally attached to the upper yoke 221 via the magnet 300 with an
adhesive, for example, in a state in which the plate portion 222A clamps the magnet 300 with
the upper yoke 221.
In the state in which the lower yoke 222 is attached, the outer peripheral surface of the
protrusion 222B faces the inner peripheral surface of the upper yoke 221 with a predetermined
gap to form a magnetic gap.
[0023]
The magnet 300 is formed, for example, in a ring shape, and pole faces are formed on both end
faces in the axial direction.
Then, as described above, the magnet 300 is attached by, for example, an adhesive in a state of
being held between the upper yoke 221 and the plate portion 222A of the lower yoke 222.
In this mounted state, the protrusion 222B of the lower yoke 222 is penetrated substantially
coaxially on the inner peripheral side of the magnet 300. By the attachment of the magnet 300,
the outer peripheral surface of the projection 222B of the lower yoke 222 and the inner
peripheral surface of the upper yoke 221 face each other with different magnetic poles, and the
magnet 300 and the magnetic body 220 constitute a magnetic circuit.
[0024]
As shown in FIGS. 1 and 2, the diaphragm 400 is formed of, for example, a papermaking process
mainly made of fibers, which is a paper making process, an injection molding of a synthetic resin,
a thin metal plate or the like. The vibrating plate 400 has a vibrating portion 410 and an edge
portion 420.
[0025]
The vibrating portion 410 is formed in a substantially thin film shape of a substantially truncated
12-05-2019
7
shape (cone shape) having a substantially circular through hole 411 which is expanded toward
the one surface side and has a substantially circular through hole 411 at a substantially central
portion. In the vibrating portion 410, a substantially cylindrical attachment portion 412 is
provided in series on the periphery of the through hole 411. Further, a thick portion 413, which
is partially thick in the circumferential direction, is provided on the outer peripheral edge of the
vibrating portion 410 so as to protrude to the outer surface side. The thick portion 413 is formed
so that the middle portion is thick in the circumferential direction of the vibrating portion 410
and the thickness is gradually reduced according to the both end portions.
[0026]
The edge portion 420 has a junction portion 421 formed in a substantially thin film shape having
a substantially truncated shape which is inclined similarly to the vibrating portion 410. The joint
portion 421 is formed to have substantially the same width as the radial width of the outer
peripheral edge of the vibrating portion 410 where the thick portion 413 is provided. An edge
422 curved in a dome shape is continuously provided on the outer peripheral edge of the joint
portion 421 on the side where the joint portion 421 is expanded. Further, at the outer peripheral
edge of the edge 422, a mounting flange portion 423 is provided in a row in a hook shape. And
the edge part 420 is formed in a substantially annular shape which has the junction part 421, the
edge 422, and the attachment collar part 423 in series.
[0027]
The vibrating plate 400 is formed by attaching the bonding portion 421 of the edge portion 420
to the outer surface side of the outer peripheral edge of the vibrating portion 410 by bonding,
for example. Further, the diaphragm 400 is positioned such that the attachment flange 423 of
the edge 420 abuts on the inner circumferential surface of the positioning cylindrical portion
215 of the frame 200, and the attachment step 214 of the frame 200 is ring-shaped with an
adhesive, for example. In a state of being supported by the mounting member 440 of the frame
200 and supported by the frame 200.
[0028]
Further, a substantially cylindrical coil bobbin 450 is integrally provided on the diaphragm 400.
The coil bobbin 450 is formed of, for example, the same material as that of the diaphragm 400 in
12-05-2019
8
a substantially cylindrical shape. The coil bobbin 450 is formed in a substantially cylindrical
shape whose outer diameter is substantially the same size as the inner diameter of the
attachment portion 412 of the diaphragm 400, and one end side in the axial direction is
integrally attached using, for example, an adhesive. The coil bobbin 450 may have a
configuration in which a spherical dome-shaped dust cap for closing the end face is bonded
integrally with, for example, an adhesive at one end side of the side where the diaphragm 400 is
expanded.
[0029]
Further, the coil bobbin 450 is integrally provided with a substantially disc-shaped mounting
support portion 460. The mounting support portion 460 is formed, for example, of the same
material as the coil bobbin in a substantially disc shape. The mounting support portion 460 has a
substantially cylindrical shape in which the coil bobbin 450 is inserted at substantially the
center, and has a cylindrical portion (not shown) whose inner peripheral surface is integrally
attached to the outer peripheral surface of the coil bobbin 450 by, for example, an adhesive. ing.
Furthermore, the mounting support portion 460 is provided with a series of movable portions
462 that are formed in the shape of a flange in the radial direction at one axial end of the
cylindrical portion 461 and in the shape of a wave in the radial direction. Further, on the outer
peripheral edge of the movable portion 462, a collar portion 463 which protrudes in a bowl
shape and is attached to the peripheral edge of the bottom portion 212 of the frame 200 with,
for example, an adhesive is provided in series. Then, the flange 463 of the mounting support 460
is attached to the periphery of the bottom 212 of the frame 200, the attachment flange 423 of
the edge 420 of the diaphragm 400 is attached to the attachment step 214 of the frame 200,
and the coil bobbin 450 is A diaphragm 400 integrally mounted is disposed on the frame 200.
[0030]
The voice coil 500 is wound around the outer peripheral surface of the other end side of the coil
bobbin 450 in the axial direction. The wound state of the voice coil 500 is fixed by, for example,
an adhesive. The voice coil 500 is wound, for example, in a state in which the diaphragm 400 is
attached to the frame 200 and positioned in the opposing magnetic gap of the lower yoke 222
and the upper yoke 221 of the magnetic body 220. Then, both ends of the wire of the voice coil
500 are drawn out and connected to the terminal 216A of the terminal 216 provided on the
frame 200 to become an input end of audio data.
12-05-2019
9
[0031]
The protective member is formed, for example, in a mesh shape of, for example, a synthetic resin
or a metal material, and is attached to the positioning cylindrical portion 215 of the frame 200 in
a state of covering the expanding side of the diaphragm 400. The attachment of the protective
member may be, for example, an adhesive or the like, or may be attached by any method such as
fitting fixation or screwing. Further, the speaker device 100 may be configured without the
protective member.
[0032]
[Manufacturing Operation of Speaker Device] Next, a manufacturing operation of the speaker
device 100 will be described.
[0033]
For example, the vibrating portion 410 and the edge portion 420 are respectively molded using a
mold (not shown) formed in a predetermined shape.
The mold for forming the vibrating portion 410 is provided with a recess in which the thick
portion 413 is integrally formed at a part of the outer peripheral edge of the vibrating portion
410 in the circumferential direction. Then, the inner peripheral surface of the bonding portion
421 of the edge portion 420 is bonded, for example, with an adhesive to the outer surface of the
outer peripheral edge of the vibrating portion 410 respectively molded and integrally attached,
thereby forming the diaphragm 400. At the time of this attachment, the outer peripheral edge of
the vibrating portion 410 coincides with the edge of the boundary portion between the joint
portion 421 and the edge 422 and the inner peripheral edge of the joint portion 421
substantially coincides with the inner peripheral edge of the thick portion 413. Join. In addition,
the thick portion 413 of the vibrating portion 410 is formed in a state in which the middle
portion is thick in the circumferential direction of the vibrating portion 410 and becomes thinner
toward both ends in the circumferential direction. Therefore, the bonding portion 421 of the
edge portion 420 is bonded in a state in which the bonding portion 421 is in close contact with
the outer peripheral surface side of the outer peripheral edge of the vibrating portion 410
without a gap due to a step.
[0034]
12-05-2019
10
Then, in the speaker device 100 to which the diaphragm 400 is attached, when sound data of an
electrical signal is input to the terminal 216A, a predetermined current flows in the voice coil
500, and the diaphragm 400 vibrates together with the coil bobbin 450. At the time of this
vibration, the overall mass balance of the diaphragm 400 is obtained by the thick portion 413
provided in a part of the vibrating portion 410, so for example, the coil bobbin 450 is preferably
moved in the axial direction. The diaphragm 400 vibrates to obtain good sound characteristics,
and inconveniences such as partial stress concentration and breakage can be prevented.
[0035]
[Operation and Effect of the Speaker Device] As described above, in the above embodiment, the
thick portion 413 having a large thickness is provided on a part of the outer peripheral edge to
which the edge portion 420 of the vibrating portion 410 is attached in the circumferential
direction. . For this reason, compared with the structure which attaches another member and
takes mass balance, the number of parts decreases, the operation process of attaching another
member can also be reduced, and while being able to improve manufacturability easily, the time
of shaping | molding of vibration part 410 beforehand. Since the thick portion 413 is configured,
for example, there is no variation in the amount of adhesive due to adhesion or variation in the
mounting position, and stable characteristics can be easily obtained. Therefore, it is particularly
effective for a configuration in which the mass balance is different, such as a configuration in
which the position of the through hole 411 is displaced from the center, for example.
[0036]
Further, the thick portion 413 is provided in the vibrating portion 410. For this reason, setting of
mass balance is easy, and further stable characteristics can be easily obtained.
[0037]
Furthermore, the thick portion 413 is formed so that the both end sides in the circumferential
direction of the vibrating portion 410 gradually become thick. For this reason, when joining the
joint portion 421 of the edge portion 420, a gap can not be generated due to a step, and
adhesion can be obtained with certainty, stable characteristics can be obtained, and deterioration
12-05-2019
11
of the appearance due to the gap can be prevented. Furthermore, the mass changes continuously
in the circumferential direction, and a better mass balance can be obtained.
[0038]
Then, the width dimension of the thick portion 413 in the radial direction of the vibrating portion
410 is a region to which the bonding portion 421 is bonded. For this reason, positioning at the
time of adhesion | attachment of the junction part 421 can be performed easily, and
manufacturability can be improved.
[0039]
[Modification of the embodiment] The present invention is not limited to the above-described
embodiments, and includes the following modifications as long as the object of the present
invention can be achieved.
[0040]
That is, although the cone type speaker apparatus 100 provided with the cone-shaped diaphragm
400 was demonstrated, the diaphragm of any shapes, such as a horn type, can also be objected,
for example.
[0041]
The thick portion 413 is formed to protrude to the outer surface side of the vibrating portion
410. For example, the thick portion 413 protrudes to the inner surface side as shown in FIG. 3 or
the inner and outer surfaces as shown in FIG. You may form in the state used as thickness.
In addition, as shown in FIG. 3, by making it a state which protrudes in the opposite side to the
side to which the junction part 421 of the inner surface side, ie, the edge part 420, adheres, there
is no unevenness in a junction part and it can join easily, and manufacture You can easily
improve the
[0042]
12-05-2019
12
Furthermore, although the thick portion 413 has been described as being gradually thinner at
both ends in the circumferential direction, it may be formed, for example, to have a uniform
thickness.
In the case where a step is generated in the thick portion 413, for example, the thick portion 413
is inserted in a concave shape corresponding to the property of the thick portion 413 so that no
gap with the joint portion 421 is generated. You may provide the recessed part of a state.
Furthermore, as shown in FIG. 3 and FIG. 4, the radial inner edge of the vibrating portion 410 in
the thick portion 413 may also be formed in a shape in which no level difference is generated so
as to be gradually thinner.
[0043]
Further, although the thick portion 413 is formed in the vibrating portion 410 and described, for
example, as shown in FIG. 5, the thick portion 413 may be formed in the bonding portion 421 of
the edge portion 420. Even with such a configuration, the same effects as the effects of the
above-described embodiment can be obtained. In FIG. 5, the thick portion 413 is formed to
protrude on the outer surface side of the joint portion 421. Furthermore, as shown in FIG. 5, by
providing a state of projecting on the outer surface side of the bonding portion 421, that is, a
surface opposite to the surface to be bonded to the vibrating portion 410, as described above,
There is no unevenness, bonding is easy, and the productivity can be improved. Further, as
described above, the thick portion 413 provided in the joint portion 421 is also formed to be
gradually thinner at the peripheral edge, so that mass balance can be continuously taken in the
circumferential direction, and Can be prevented, and the deterioration of the appearance can also
be prevented. Furthermore, the thick portion 413 may be provided on both the vibrating portion
410 and the joint portion 421 of the edge portion 420. With the configuration provided on both
sides, the same mass balance can be obtained even if the thickness dimension of the thick portion
413 is halved, and the formability of the vibrating portion 410 and the edge portion 420 can be
improved.
[0044]
And as a structure which takes mass balance, it is not restricted to the structure formed in the
thickness like the various embodiment mentioned above. For example, as shown in FIG. 6, the
bonding area of the vibrating portion 410 and the bonding portion 421 of the edge portion 420
12-05-2019
13
may be widened in a partial region in the circumferential direction. FIG. 6 is an example in which
the inward width dimension of the joint portion 421 of the edge portion 420 is different in the
circumferential direction. Even with such a configuration, the same function and effect as those
of the various embodiments described above can be obtained. Furthermore, since there is no step
due to the thickness, the bonding operation can be facilitated without any gap, and the
productivity can be easily improved. Further, as shown in FIG. 6, by setting the inward length
dimension of the joint portion 421, the setting of the mass in the circumferential direction can be
easily performed, and the shaping of the edge portion 420 can be facilitated, and manufacturing
You can easily improve the Note that the width dimension of the bonding portion 421 is not
limited to the different one, and for example, the width dimension of the region of the outer
peripheral edge joined to the edge portion 420 of the vibrating portion 410 may be different in
the circumferential direction. Furthermore, both width dimensions may be formed in different
states in the circumferential direction, or the above-described thickness configuration may be
combined.
[0045]
Also, the configuration for mass balance is not limited to the configuration in which the shapes of
the vibrating portion 410 and the edge portion 420 described above are different in the
circumferential direction, for example, when forming the vibrating portion 410 and the edge
portion 420 A material having a specific gravity larger than that of the material constituting the
whole may be mixed in a partial region of the direction, and the partial region may be made to be
heavier than other portions in the circumferential direction. Furthermore, the amount of adhesive
to be joined may be increased in a partial area in the circumferential direction such that the area
becomes heavier than other parts.
[0046]
And although the mounting support part 460 was provided and demonstrated to the coil bobbin
450 attached to the diaphragm 400, it is good also as a structure which provided the mounting
support part 460 as a series as the diaphragm 400. FIG. Furthermore, the coil bobbin 450 may
not be provided. For example, the voice coil 500 may be directly wound around a portion formed
in a substantially cylindrical shape by being bent in series from the vibrating portion 410. In
addition, although the vibrating portion 410 is formed to have a substantially elliptical truncated
shape, it may be applied to a substantially circular truncated shape having substantially the same
diameter.
12-05-2019
14
[0047]
Furthermore, the configuration of the frame 200 is not limited to the above-described structure
in which the main body portion 210 and the magnetic body 220 described above are provided
and are spread over one side. For example, any shape may be used, such as a substantially
cylindrical shape used in the case of a small size used for a portable device such as a mobile
phone or a notebook computer. Furthermore, as the magnetic body 220, any shape that
constitutes any magnetic circuit, such as an internal magnet type or an external magnet type, can
be applied.
[0048]
Moreover, although the protective member was provided and demonstrated, it is not necessary to
provide a protective member as mentioned above.
[0049]
In addition, the specific structure and procedure at the time of implementation of this invention
can be suitably changed into another structure etc. in the range which can achieve the objective
of this invention.
[0050]
[Operation and Effect of the Embodiment] As described above, at least one of the vibrating
portion 410 and the edge portion 420 is partially thickened in the circumferential direction in
the portion joined together.
For this reason, compared with the structure which attaches another member and takes mass
balance, the number of parts reduces and the work process of attaching another member can
also be reduced, and while being able to improve manufacturability easily, the thick part 413 is
integrally configured. Because of this, for example, variations in the amount of adhesive due to
adhesion and variations in the mounting position do not occur, and stable characteristics can be
easily obtained.
[0051]
12-05-2019
15
Further, the bonding area where the substantially annular edge portion is attached to the outer
peripheral edge of the vibrating portion 410 is attached in a state different in the circumferential
direction.
For this reason, compared with the structure which attaches another member and takes mass
balance, the number of parts decreases, the work process of attaching another member can also
be reduced, and while being able to improve manufacturability easily, a joint area is
circumferentially With a simple configuration in which different states do not occur, for example,
variations in the amount of adhesive due to adhesion and variations in mounting position do not
occur, and stable characteristics can be easily obtained.
[0052]
Furthermore, at least one of the vibrating portion 410 and the edge portion 420 is formed in a
state in which the specific gravity of a part in the circumferential direction in the portions joined
together is increased. For this reason, compared with the structure which attaches another
member and takes mass balance, the number of parts reduces and the work process of attaching
another member can also be reduced, and while being able to improve manufacturability easily,
for example, There is no variation in quantity or variation in mounting position, and the
characteristics can be stabilized.
[0053]
Further, the adhesive is attached in a large amount in a partial region in the circumferential
direction of the joint portion of the vibration portion and the engine portion. For this reason,
compared with the structure which attaches another member and takes mass balance, the
number of parts reduces and the work process of attaching another member can also be reduced,
and while being able to improve manufacturability easily, for example, There is no variation in
quantity or variation in mounting position, and the characteristics can be stabilized.
[0054]
12-05-2019
16
FIG. 1 is a cross-sectional view showing a speaker device according to an embodiment of the
present invention. It is sectional drawing which notched one part which shows the diaphragm in
the said embodiment. It is sectional drawing which partially cut away which shows the
diaphragm in other embodiment of this invention. It is sectional drawing which partially cut away
which shows the diaphragm in further another embodiment of this invention. It is sectional
drawing which shows the diaphragm in further another embodiment of this invention. It is
sectional drawing which shows the diaphragm in further another embodiment of this invention.
Explanation of sign
[0055]
DESCRIPTION OF SYMBOLS 100 ... Speaker apparatus 200 ... Frame 220 ... Magnetic body 300
which is a yoke 300 ... Magnet 400 as a magnetic body 400 ... Diaphragm 410 ... Vibration part
413 ... Thick part 420 ... Edge part 500 ... Voice coil
12-05-2019
17
Документ
Категория
Без категории
Просмотров
0
Размер файла
28 Кб
Теги
jp2005295354
1/--страниц
Пожаловаться на содержимое документа