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JP2013048414

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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 JP2013048414
The present invention is applied to a speaker used in home appliances, in particular, to a woofer
which is ultra thin and excellent in bass characteristics to be applied to an ultra thin TV, and it is
super thin yet has a large bass improvement and large amplitude. Provide an ultra thin speaker
unit that improves sound pressure. SOLUTION: The diameter of a voice coil 130 can be enlarged
in comparison with the outer diameter size of a speaker by a change in the external shape of a
damper 20 and a frame 10, and the damper 20 is provided in two stages. The sound pressure is
improved while improving the bass characteristics by using the size of the diaphragm 140 to be
large while improving the bass characteristics by increasing the vertical amplitude of the upper
end in the state of being placed on the top. [Selected figure] Figure 1
An ultra-thin speaker unit with improved bass characteristics and sound pressure and a board on
which the speaker unit is assembled
[0001]
The present invention relates to a speaker used in home appliances, and is particularly applied to
a woofer having an ultra thin structure and excellent in bass characteristics, which is suitable for
an ultra thin TV.
[0002]
However, it is possible to apply to a wide variety of speakers which are ultra thin and can be
applied to bass and treble while using such a structure of the present invention.
[0003]
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1
In addition, it is possible to easily assemble the lengths of the gold thread wires exposed at the
time of assembly to the same while securing sufficient sound pressure to make good use of the
bass characteristics, and further a speaker unit and a speaker unit having improved functions.
Related to the board on which it was mounted.
[0004]
At present, the development of TV that can be said to be a flower of home appliances is that it
has evolved from PDPs and LCDs that can now be said to be ultra thin, starting from cathode ray
tubes, to projection TVs, and the thickness of TVs has become progressively thinner. The
thickness of the mounted speaker is also becoming thinner structurally.
[0005]
However, the performance of the audio generated by the TV picture must also be improved if the
speaker only gets thinner with such a structural part, but especially if it is ultra thin This means
that the sound pressure drops and the desired bass characteristics and sound pressure can not
be obtained, and it is not possible to obtain an audio that matches the TV image.
[0006]
Therefore, various proposals have been made to provide speakers that are made thin and ultrathin, but these disadvantages are that a woofer having bass characteristics can not obtain
substantial sound pressure. It is.
[0007]
That is, although a horizontal damper is proposed to provide an ultra thin, it is a matter of course
that the damper of such a form can not be increased in vertical amplitude due to the structural
limitation of the ultra thin speaker manufactured. The reason is that the speed of the up and
down vibration becomes faster, which is not suitable for the bass characteristic.
[0008]
Furthermore, since such an ultra-thin speaker is manufactured to be ultra-thin, when the gold
wire connected to the voice coil is exposed to the outside and connected to the contact terminal,
the length of the gold wire is Are different from each other, the width of vibration on one side
and the other side is mutually changed according to the thin thickness of the bobbin that vibrates
up and down, so that the lengths of the gold wire are equalized and connected to the contact
terminal.
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[0009]
Since the speaker unit manufactured at this time is an ultra thin speaker unit, the space secured
at the time of assembly is small, and the length of the gold wire is short, so soldering is very
inconvenient and difficult.
[0010]
Furthermore, when assembling the completed ultra thin speaker unit to a board, the cover is
attached in a state where the joint holes formed in the corners of the frame and the joint holes
formed in the board are aligned. Although it comes to be fastened, at this time, the screw to be
fastened passes through the coupling hole of the ultra-thin speaker located inside the cover and
is coupled to the board so that the speaker unit and the board can not be seen at the time of
assembly It is difficult and inconvenient to assemble due to the connecting holes and grooves of
the
[0011]
In addition, while the board and the ultra thin speaker unit are fastened, the electric wire of the
speaker unit is placed in a free state and connected to an external device.
Therefore, when the speaker unit vibrates, the electric wire placed in a free state comes into
contact with the board while vibrating due to the vibration of the speaker unit and generates a
roar.
[0012]
Therefore, according to the present invention, the sound pressure is improved by improving the
bass characteristics and increasing the amplitude even though it is ultra thin.
[0013]
Further, in the present invention, it is possible to easily assemble the length of the exposed gold
thread wire while securing a sufficient sound pressure to make good use of the bass
characteristics, and further, to facilitate the board and the ultra thin speaker unit. It is intended to
improve the assembly structure and function that can be combined with
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[0014]
For this reason, the diameter of the voice coil can be increased in comparison with the outer
diameter size of the speaker by the change of the outer shape of the damper and the frame, and
the damper is provided in two stages and the lower end is placed on the frame at the upper end
The sound pressure is improved while the bass characteristics are improved by using the size of
the diaphragm to be large while increasing the vertical amplitude and making the bass
characteristics factory.
[0015]
In addition, an ultra-thin design has become possible by applying a flat diaphragm.
[0016]
Further, in the present invention, in order to improve the assembly structure, the outer frame of
the damper is made to project a pair of adjacent locking frames outward to form an inwardly
curved concave recess in the adjacent area, thereby forming an opening hole. The gold wire is
inserted into the concave recess exposed to the inside and connected to the contact terminal so
that the lengths of the exposed gold wire in the same length can be matched.
[0017]
Further, the frame of the present invention forms a plurality of deep connection holes formed on
the lower side at an outwardly extended corner, and a connection groove is formed inside a
connection hole of the connection port. According to another aspect of the present invention, the
method further comprises a board for allowing the projections to be embedded and assembled in
an integrated state.
[0018]
Further, in the board of the present invention, a large number of vertically upright fixing pieces
are injection-molded integrally with the board.
An electric wire connected to the contact terminal is held by the fixing groove in the fixing piece
and fused so as not to generate noise.
[0019]
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Therefore, according to the present invention, by changing the structure of the damper, it is
possible to make an audio suitable for a thin TV by improving the bass characteristics even
though it is ultra thin.
[0020]
In addition, it becomes possible to provide an ultra-thin type according to the mounting form of
the damper and the form change of the diaphragm, and it becomes easy to assemble in the
manufacturing process.
[0021]
In addition, the present invention can provide a speaker such that it has a sufficient sound
pressure while having excellent bass characteristics that matches an expensive slim TV by using
a two-stage damper seated and used. In particular, it is possible to assemble the ultra-thin
speaker unit by simply matching the lengths of the gold wire lines to connect the gold wire lines
using the locking frame forming the curved concave recess of the damper. it can.
[0022]
In addition, even when providing a board on which the unit is mounted, it is possible to improve
the assembly structure so as to have excellent durability while being economical.
[0023]
It is an exploded perspective view showing the whole assembling composition of the present
invention.
It is an appearance perspective view of a speaker unit of the present invention.
It is a cross-sectional perspective view of the assembled state of the speaker unit of this
invention.
It is a cross-sectional perspective view of the assembled state of the speaker unit of this
invention.
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It is a sectional view of a state where a damper of the present invention is attached to a frame.
It is an external appearance perspective view of a damper of the present invention.
It is the expansion perspective view which showed the principal part structure of the damper of
this invention.
It is a perspective view of a diaphragm of the present invention.
It is a state figure which resists the distortion by the diaphragm and damper of this invention.
FIG. 6 is an exploded perspective view of an ultra thin speaker unit according to another damper
structure of the present invention.
FIG. 10 is a cross-sectional view of the assembled state of FIG. 9 of the present invention.
FIG. 7 is a perspective view of another embodiment of the damper of the present invention.
It is a working condition figure of the damper of FIG. 11 of this invention.
It is a procedure flowchart showing the connection process of the gold wire with the power
supply terminal by using the damper of the present invention.
It is a cross-sectional perspective view in which the coil wire of this invention is connected with a
terminal.
It is an external appearance perspective view of the board | substrate with which the speaker
unit of this invention was mounted | worn.
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It is a disassembled perspective view which shows a speaker unit assembling to the board of this
invention.
It is a perspective view in which the frame which comprises a speaker unit is assembled to the
board of the present invention.
It is a perspective view which shows the fixed state of an electric wire by the Example of this
invention.
[0024]
Hereinafter, specific contents for implementing the present invention will be described in detail
with reference to the attached drawings.
[0025]
First, FIGS. 1 to 8 show the entire configuration of a speaker unit according to an embodiment of
the present invention, and as shown in the drawings, the configuration of the present invention
comprises a yoke in which a permanent magnet 120 is accommodated. An inner wall 13 is
formed on the frame 10 on which the permanent magnet 120 is attached in close contact with
the outer wall 110a of the yoke 110 in which the permanent magnet 120 is housed. To be
projected to the inside of the frame 10 (that is, the space in which the damper is accommodated)
so that the damper 20 is placed on the extension of the lower end of the inward projecting inner
wall 13 The bottom surface 11 is formed to have a separation space 12, and an outer wall 14 is
formed on the extended outer side of the bottom surface 11 having the inner wall 13 and the
separation space 12. The wall 14 is formed with an opening hole 16 by plurality of the support
wall 15 to accommodate the sound pressure generated during vertical vibration of the
diaphragm 140.
[0026]
Further, the coil wire 131 of the voice coil 130 which has slipped through the opening groove 22
a of the damper 20 is formed on any one of the support wall 15 forming the outer wall 14 and
the power terminal 160 formed on the outside of the support wall 15 A terminal hole 15a for
connecting and fixing can be provided, and at the same time, a locking projection 15b can be
formed on the inner side of the support wall 15 for fixing the damper 20 placed on the bottom
surface 11 having the separation space 12 Such a locking projection 15b is slightly lifted to
block the vibration when the damper 20 is placed on the bottom surface 11, and the
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configuration of the locking projection 15b may be varied in various positions or It is possible to
change the form, and in order to prevent such vibration, it is adhered to the support wall 15
which forms the bottom surface 11 or the outer wall 14 as a method of adhesive fixing with an
adhesive. Vibration is prevented even when such a constant.
[0027]
Further, at the upper end of the frame 10, there is formed a frame end portion 17 with a step jaw
for placing an edge 141 of the diaphragm 140 and adhering and fixing it.
[0028]
In addition, the damper 20 is placed and fixed on the bottom surface 11 of the frame 10 having
the separation space 12 or the outer frame 21 and the voice coil 130 are bonded to be fixed to
the support wall 15 forming the outer wall 14 The inner frame 22 is to be adhesively fixed to the
vibration plate 140 mounted and attached.
[0029]
The outer frame 21 is placed on the bottom surface 11 having the separation space 12 and is
adhesively fixed, or is slightly lifted from the bottom surface 11 while being locked and fixed to
the locking projection 15 b of the support wall 15 and vibrates when it vibrates. To prevent the
inner frame 22 from floating a certain distance from the bottom surface 11, ie, the maximum
amplitude generated at the time of vertical vibration, preferably the inner frame 22, preferably
the inner side of the outer frame 21. The elastic bar 23 is formed on the upper side of the outer
frame 21 so as to maintain the amplitude when the inner frame 22 vibrates up and down in such
a state. Coupled to the lower end of 22 to enable operation at maximum amplitude.
[0030]
Further, in the present invention, the damper 20 is injection-molded to a plastic selected from
various materials in order to prevent deformation as well as realization of low weight, and such
injection molding limits the object of the present invention It is also possible to embody metal or
various materials.
[0031]
In addition, the outer frame 21 and the inner frame 22 are formed in a vertically upright state for
vertical reinforcement because the outer frame 21 and the inner frame 22 have a constant width
for maintaining a constant strength and durability even with the minimum weight of the damper
20. The elastic bar 23 lies horizontally for ease of elasticity so as to be perpendicular to the
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vertical upright state of the outer frame 21 and the inner frame 22, and when the elastic bar 23
vibrates up and down, the outer frame 21 And maintain the upright strength of the inner frame
22 and improve the elasticity of the elastic bar 23.
[0032]
In addition, the elastic bar 23 lying horizontally is bent while being positioned at a constant
length on the same line as the inner frame 22 and the outer peripheral edge of the outer frame
21 between the outer frame 21 and the inner frame 22. To maintain accurate vertical amplitude
maintenance during vertical vibration of the inner frame 22. Such an elastic bar 23 is identical to
the outer rims of the inner frame 22 and the outer frame 21. In order to be positioned on a line,
the portion connected when being connected by the outer frame 21 and the inner frame 22 is
provided with a vertically extended reinforcing base 24 and then extended with the reinforcing
base 24 By being formed so as to be bent while being made horizontal, it is possible to maintain
an accurate amplitude at the time of vertical vibration.
[0033]
Further, the reinforcement base 24 according to the present invention is to prevent fraying
during accurate operation of the elastic bar 23 bent horizontally while a meat removal is formed
for weight reduction at the time of vertical vibration of the inner frame 22. The elastic bar 23 is
connected to the tip of the inner groove 24b and bent while being made horizontal with the
reinforcing protrusion 24a and the inner groove 24b.
[0034]
The coil wire 131 exposed from the voice coil 130 bonded and fixed to the diaphragm 140 forms
the outer wall 14 of the frame 10 while being extracted from the opening groove 22 a of the
inner frame 22 of the damper 20 fixed to the diaphragm 140. The power supply terminal 160 is
connected to the outside of the support wall 15 through a terminal hole 15 a formed in one of
the support walls 15.
[0035]
Further, as shown in FIG. 7, when using the one in which the inclined protrusion 142 is formed
so as to incline the edge 141 of the diaphragm 140 to one side as shown in FIG. By extending in
one direction while being positioned so as to have different heights on the outer frame 21, it is
possible to take advantage of slight distortion during vertical vibration.
[0036]
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Further, in the present invention, in the case where the diaphragm 140 is made of a flat plate, the
flat plate can be embodied as a very thin plate by such a flat plate. It is possible to use one having
a large diameter by being directly adhesively connected, and it is possible to reduce the speed of
the upper and lower amplitude, but the diaphragm 140 is made at the upper and lower ends
having a difference in height. By being connected with the damper 20 made by the outer frame
21 and the inner frame 22, it does not touch the yoke 110 or the like even at the time of vertical
amplitude.
Furthermore, since the inner frame 22 of the damper 20 vibrates up and down inside the outer
frame 21, the width of the vibration of the diaphragm 140 is increased to improve the bass
characteristic.
In addition, by making it possible to use one in which the diameter of the bobbin 130a of the
voice coil 130 is large, the length of the coil 130b wound around the bobbin 130a is increased,
thereby improving the sound pressure. It is done.
[0037]
Furthermore, the damper 20 is made by using a low-weight conductive material so that the coil
connection of the voice coil is directly connected to the damper, so that the connection operation
can be simplified. Assembly process can be simplified.
[0038]
However, such a change of the material does not change the object of the present invention, and
such a change of the material or the structural form can be variously changed within the object
of the present invention. Of course.
[0039]
9 to 14 show the appearance of an ultra thin speaker unit according to another embodiment of
the present invention, and permanent magnets 120 mounted on the frame 10 as shown in the
drawings. The yoke 110 for housing is integrally formed with the frame 10 by insert injection
molding to provide ease of assembly, and for this purpose, a projecting frame 111 is formed at
the lower end of the yoke to surround the projecting frame 111. Insert injection molding enables
firm fixation, although the process of bonding is not necessary.
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[0040]
Also, the terminal 150 is formed so that the coil wire 131 of the coil 130b wound around the
bobbin 130a is connected to the diaphragm 140, and the gold wire 162 connected to the power
terminal 160 is formed on the terminal 150. Make it
[0041]
For this reason, the coil wire 131 which is long and hangs so that the coil wire 131 is
immediately connected to the one side terminal 150a of the terminal 150 formed on the
diaphragm 140 prevents the coil 130b wound around the bobbin 130a from being unwound.
While the other side terminal 150b is formed on one electrode 150 connected to the one side
terminal 150a and the flexible board 150c at the same time as the other side terminal 150b. A
gold wire 162 is connected to the side terminal 150b and connected to a power terminal 160
connected to an external power supply.
[0042]
Therefore, the connection between the coil wire 131 and the gold wire 162 for connecting to the
external power source is easy, but the welding between the power terminal 160 and the gold
wire 162 can be easily made at the time of assembly.
[0043]
In the state where the frame end 17 for placing the edge 141 of the diaphragm 140 is formed at
the upper end of the outer wall 14 of the frame 10, the edge extended outward is formed deeper
at the lower side. A connection port 19 having a plurality of connection holes 19a is formed so
that the connection protrusion 203 of the board 200 is inserted into the inside of the connection
hole 19a and can be easily assembled in an integrated manner with the board 200. did.
[0044]
Further, in the outer frame 21 of the damper 20, a pair of adjacent locking frames 25 are formed
so as to protrude outward from each other while forming a concave recess 26 curved inward
between them, and are connected by the diaphragm In the state where the gold wire 162
exposed to the outside of the damper 20 at the time of assembly with the power supply terminal
is seated inside the curved concave recess 26 and seated, the other side of the gold wire is By
connecting with each other, the gold wire 162 exposed at the time of assembly is aligned with
the same length and connected with the power supply terminal.
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[0045]
At this time, the concave recesses 26 are formed in the outer frame 21 in a number
corresponding to the gold wire 162, and the support wall 15 forming the outer wall 14 is
interposed between the locking frame 25 and another locking frame 25a. A locking plate 27 is
formed therebetween, and when the locking plate 27 is exposed to the outside through the
opening hole 16 and in close contact with the support wall 15, the same distance can be obtained
around the support wall 15. The locking frame 25 is exposed outside the opening hole.
[0046]
At this time, a part of the upper end of the opening hole 16 is incised, and a polygonal fixing
protrusion 18 is formed so as to protrude outward on the upper end of the support wall 15
located in the incised part. A groove 161 corresponding to the fixing protrusion 18 is formed at
160, and the power terminal 160 is sandwiched and fixed to the fixing protrusion 18 so as to be
easily assembled.
[0047]
FIG. 13 shows the process of connecting the gold wire 162 to the power supply terminal 160.
First, the damper 20 is fixed to the bottom surface 11 of the frame 10 to assemble the voice coil
130 and the diaphragm 140. After completion, the gold wire 162 is exposed to the outside of the
frame 10 through the opening hole formed between the support walls forming the outer wall.
[0048]
At this time, if the power terminal 160 is assembled by being sandwiched between the fixing
protrusion 18 and the groove 161 on the fixing protrusion 18 formed on the upper portion of
the support wall 15 on which the power terminal is formed, the opening is made according to the
size of the power terminal. The locking plate 27 exposed outside the opening hole 16 together
with the locking frame 25 of the damper 20 is in close contact with the support wall 15 and fixed
because the part of the portion in which the hole is formed is in a cut state. Respective locking
frames 25 exposed to the outside of the opening hole 16 are located at positions corresponding
to the left and right centering on the power supply terminal.
[0049]
Then, at this time, the other end of the gold wire 162 is soldered and fixed to the power terminal
160 in a state where the exposed gold wire 162 is sandwiched and fixed inside the concave
recess 26 of the locking frame 25. By cutting the locking frame 25, the gold wire wires 162
exposed outside the damper 20 are all connected with the same length and connected to the
power terminal 160.
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[0050]
Therefore, according to the present invention, the vibration widths of one side and the other side
may be different from each other because the lengths of the gold thread wires connected to each
other by the thin bobbin thickness and the structural limit are different when manufacturing the
ultra thin film type speaker It became possible to eliminate the inconvenience and inconvenience
at the time of assembly.
[0051]
Also, FIGS. 15 to 18 show the appearance of a board to which an ultra thin speaker unit is
coupled, and the board may be provided with an opening 201 cut in the center thereof. A fixing
protrusion 202 surrounding the outer shell and a connecting protrusion 203 having a
connecting groove 203a are formed, and when the speaker is connected to the board 200, the
connecting protrusion 203 of the board is inserted into the inside of the connection port 19 of
the frame 10. And the assembled screw 211 assembled through the cover 210 in an integrated
state is directly inserted into the connecting groove 203a of the board 200 so that the ultra thin
speaker unit can be easily assembled to the board at one time did.
[0052]
In addition, a vent 204 which is cut out is formed on one side of the board 200, and a vent 205
having a curved shape surrounding the vent 204 is formed, and sound is produced in a state
where sufficient air is secured. To increase output.
[0053]
Also, as shown in FIG. 18, according to the embodiment, a plurality of fixing pieces 206 vertically
erected are integrally injection-molded with the board at the bottom of the board 200, and the
fixing grooves are formed in the fixing pieces 206. 207 is formed, and heat is applied and fused
in a state where the electric wires 208 and the like connected to the power supply terminal 160
are sandwiched and fixed in the fixing groove 207, a free state (free flow possible Function is
improved by removing the noise generated while the wires 208 and the like move due to
vibration.
[0054]
At this time, in order to prevent the board 200 of the present invention from being twisted, the
electric wires 208 form fixing grooves in the orthogonal reinforcing projections formed on the
inside of the board, and sandwich the electric wires 208 in the fixing grooves. By heat fusion and
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fixing, the same effect can be generated as described above.
[0055]
An inner portion 230 is formed at one side of the board 200, and the electric wire 208 is
exposed to the outside in a state where the electric wire 208 is sandwiched and fixed by the
fixing port 240 through the inner portion.
That is, an elastic piece 231 which is a jaw is formed on one side of the inner portion 230, and a
guide 232 and an exposure hole 233 are formed on the other side, and the electric wire 208
inside is exposed through the exposure hole. When the fixing port 240 is inserted into the inside
of the inner portion in a state in which it is sandwiched by the fixing port 240, the guide piece
241 of the fixing port 240 and the guide 232 are mutually separated while the elastic piece is
separated. It comes to be fixed while being in close contact while engaging.
At this time, the wire 208 comes out through the groove of the fixing port 240 and is exposed.
[0056]
Therefore, according to the present invention, it is possible to easily assemble the lengths of the
gold wire exposed at the time of assembly to the same length while securing sufficient sound
pressure to make good use of the bass characteristics, thereby improving the assembly structure,
Speakers and boards can be easily combined.
[0057]
DESCRIPTION OF SYMBOLS 10 frame 11 bottom 12 separation space 13 inner wall 14 outer
wall 15 support wall 15a terminal hole 15b locking projection 15c lower receiving jaw 16
opening hole 17 frame end 18 fixing projection 19 coupling opening 19a coupling hole 20
damper 21 outer frame 22 inner frame 22a Opening groove 23 Elastic bar 24 Reinforcement
base 24a Reinforcement projection 24b Inner groove 25 Locking frame 26 Recessed recess 27
Locking plate 110 Yoke 111 Protruding frame 120 Permanent magnet 130 Voice coil 140
Diaphragm 141 Edge 142 Inclined protrusion 150 Electrode 150a, 150b Terminal 150c FPCB
160 Power terminal 161 Groove 162 Gold wire 200 Board 201 Opening 202 Fixing frame 203
Coupling projection 204 Air vent 205 Air passage 206 Fixing piece 207 Fixing groove 208
Electric wire 210 Cover 211 Assembly screw
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