(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2011/0216933 A1
`(43) Pub. Date:
`Sep. 8, 2011
`Lan
`
`US 20110216933A1
`
`(54) ELASTOMER LOUDSPEAKER BOX SYSTEM
`(76) Inventor:
`Quiling Lan, Guangki (CN)
`(21) Appl. No.:
`13/127,390
`
`(22) PCT Filed:
`(86). PCT No.:
`
`Nov. 23, 2009
`PCT/CN2009/075087
`
`S371 (c)(1),
`May 3, 2011
`(2), (4) Date:
`Foreign Application Priority Data
`
`(30)
`
`Nov. 28, 2008 (CN) ....................... 20081021792O3.3
`
`Publication Classification
`
`(51) Int. Cl.
`H04R IM02
`
`(2006.01)
`
`(52) U.S. Cl. ........................................................ 381A386
`
`ABSTRACT
`(57)
`An elastomer loudspeaker box system includes a loudspeaker
`box, a loudspeaker unit, a baffle and a bottom board. The
`loudspeaker box is made of elastomer material, and the tube
`wall of the loudspeaker box is bended to form a box body of
`corrugated tube shape, whereby the box body of the loud
`speaker box is elastic and is retractable freely. The loud
`speaker unit is mounted to the baffle. One end of the loud
`speaker box is mounted to the baffle, and the other end is
`closed by the bottom board, whereby the loudspeaker unit, the
`loudspeaker box and the bottom board cooperatively form a
`closed box system. So, the loudspeaker unit and the retract
`able rock movement of box body of the loudspeaker box can
`produce resonance, and the elastic box body acts as Sound
`radiator to radiate the low frequency, thereby extending the
`bass response towards low side, increasing the purity of
`Sound, and improving the bass performance.
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`Patent Application Publication
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`US 2011/0216933 A1
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`Patent Application Publication
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`Sep. 8, 2011 Sheet 2 of 6
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`US 2011/0216933 A1
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`Impedance vs Fre
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`Patent Application Publication
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`Sep. 8, 2011 Sheet 3 of 6
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`US 2011/0216933 A1
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`Patent Application Publication
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`Sep. 8, 2011 Sheet 4 of 6
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`US 2011/0216933 A1
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`Patent Application Publication
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`Patent Application Publication
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`Sep. 8, 2011 Sheet 6 of 6
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`US 2011/0216933 A1
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`US 2011/0216933 A1
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`Sep. 8, 2011
`
`ELASTOMER LOUDSPEAKER BOX SYSTEM
`
`FIELD OF THE INVENTION
`0001. The present invention relates to the technical field of
`acoustics, particularly relates to a loudspeaker box system.
`
`BACKGROUND OF THE INVENTION
`0002 To achieve the objects of isolating the front and back
`Sounds of a loudspeaker, preventing the Sounds from interfer
`ing in each other, and improving the high fidelity of the
`Sounds, currently in the market, a box body of a conventional
`loudspeaker box generally is made of materials with large
`rigid and hardness. Such as a woody material, flakeboard,
`fiberboard, plywood, natural stone, artificial Stone, marble,
`concrete, and organic glass. The reason of using these mate
`rials, in respect of acoustical properties, is intended to prevent
`the loudspeaker box board from vibrating, to avoid the
`excited resonance of the material itself, especially to elimi
`nate ultraharmonics, to prevent the Sounds from interfering in
`each other, to reduce audible coloration, and to increase the
`purity of Sound. The design of Such a conventional box body
`is only used for Sound insulation and avoiding acoustic short
`circuit, since the wall of the box has large rigid, large hardness
`and no elasticity.
`0003. However, in fact, materials with large rigid and
`hardness have Small internal damping and absorb little Sound
`wave due to the physical properties of itself. So, the velocity
`of sound transmission within the materials is fast. Firstly, the
`box body made of such materials will excite high frequency
`excited vibration to produce anharmonic sound, which will
`cause that the sounds of the loudspeaker interfere in each
`other and the timbre becomes muddy. Secondly, the bass
`response design of the loudspeaker box and the system
`thereof currently mainly has two design forms, namely closed
`boxes and vented boxes.
`0004. The cavity of a conventional closed box is of closed
`type. After the loudspeaker unit is mounted, the acoustic box
`of the cavity has big stiffness and Small compliance. The
`minimum resonance frequency Fc of the box body is higher
`than the resonance frequency of the loudspeaker unit in free
`space. So, low frequency can not be extended via combining
`the box body.
`0005. A conventional vented box is provided with sound
`guide holes. The low frequency radiant Sound wave can be
`adjusted via adjusting the size and length of the air duct to
`change the acoustic mass of the air duct. The Sound guide
`holes provided at the box body not only will transmit the
`acoustic output of low frequency end, but also will bring
`about pop noise and the interference of resonance, and will
`transmit the audible coloration of standing wave that is
`formed inside the loudspeaker by the material itself of the box
`body exciting resonance to reflect, which results in muddy
`low frequency sound.
`
`SUMMARY OF THE INVENTION
`0006 An object of the present invention is to provide an
`elastomer loudspeaker box system that extends the low fre
`quency characteristic and increases the purity of sound simul
`taneously.
`0007 To achieve the above object, an elastomer loud
`speaker box system of the present invention comprises a
`loudspeaker box, a loudspeaker unit, a baffle and a bottom
`board. The loudspeaker box is made of elastomer material,
`
`and the tube wall of the loudspeaker box is bended to form a
`box body of corrugated tube shape. The tube wall is preferred
`to be all bended, and obviously it can also be partially bended,
`thereby the box body of the loudspeaker box being elastic and
`being retractable freely. The elastomer material is preferred to
`be elastic soft rubber, and of course it can also be other
`elastomer composite material. Such as foamed plastic, and
`elastomer synthetic material. The baffle is preferred to be
`wood plank or plastic, and of course can be a board of other
`material. The loudspeaker unit is mounted to the baffle. One
`end of the loudspeaker box is mounted to the baffle, and the
`other end is closed by the bottom board, whereby the loud
`speaker unit, the loudspeakerbox and the bottom board coop
`eratively form a closed box system. The bottom board is
`mainly used to close the loudspeaker box to form a closed box
`system, and can also be used in adjusting the resonant fre
`quency and radiated Sound pressure of the loudspeaker box if
`necessary. By controlling and deploying the mass, size or
`material of the bottom board, the resonant frequency and
`radiated sound pressure value of the box body can be effec
`tively changed. The material of the bottom board is preferred
`to be metal iron plate, and can also be paper or rubber, plastic,
`etc. And of course, the bottom board and the loudspeaker box
`can also be integrally formed.
`0008. In the above mentioned technical solution, the
`lengthwise section of the box wall of the loudspeaker box is
`preferably bended into wave shape or sawtooth shape, such as
`sine wave or cosine wave, and of course it can also be other
`shape such as square wave, trapezoidal wave, and triangular
`WaV.
`0009. The box wall of the loudspeaker box is preferably
`provided with Small air holes, which are mainly for adjusting
`the stiffness of the acoustic cavity of the box body, and simul
`taneously for adjusting the resonance point of the box body to
`extend the low frequency. Since the acoustic mass inside the
`holes is light, the action of the holes to radiate sound wave is
`very weak. The audible coloration of standing wave that is
`formed by the reflected wave radiated from the holes can be
`ignored, thereby ensuring the purity of bass. Furthermore, by
`compressing the box body to let the air to flow out, the volume
`of the box body can be reduced greatly to be convenient for
`packaging and carrying.
`0010. The shape of the loudspeaker box preferably is
`cylindrical, and of course it can also be variously tubular, Such
`as a square tube, a triangular tube, a tapered tube, and a
`cylindrical tube. Or, it can be an assembly of over two pieces
`of various tubular structures that are of different shape or size.
`0011. The loudspeaker unit is preferably mounted to the
`baffle by bonding or by means of screws.
`0012. The loudspeaker box is preferably mounted to the
`baffle by bonding or by means of screws.
`0013. In the above mentioned technical solution, the baffle
`can also be box-shaped. By adjusting the size of the box
`shaped baffle, the volume of the acoustic cavity of the box
`body can be changed, thereby reducing the nonlinear distor
`tion, extending the bass response towards low side, and
`improving the low frequency. An inverted tube can also be
`arranged inside the box-shaped baffle.
`0014. The advantages of the present invention are
`described as following. Firstly, the box body of the present
`invention has the performance like springs, and combines the
`action of sound production and vibration force of the loud
`speaker unit, and the compression and dilatation of the air
`inside the cavity. The loudspeaker box stores and releases
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`Sep. 8, 2011
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`energy by the deformation of the elastomer material, and
`utilizes the good elastic displacement value and linear steady
`state restoring force of the corrugated tube-shaped box body
`to drive the elastic box body to retract to produce resonance.
`The box body acts as a radiator of sound to radiate sound
`wave. When sound wave is transmitting in an elastomer mate
`rial, the material has the acoustical property of sound absorp
`tion, Sound transmission and sound reflection. By adjusting
`the elastomer material to different materials and formulas, the
`radiation performance of sound can be convenient and effec
`tive to be changed to improve the low frequency. Moreover,
`the sound wave radiated by the back of the loudspeaker unit is
`an elastic wave. Utilizing the property that an elastic wave
`will reduce the speed in a corrugated tube-shaped elastomer,
`the acoustic compliance of the box body is increased, thereby
`equivalently increasing the Volume of the cavity, reducing the
`nonlinear distortion, extending the bass response towards low
`side, increasing the purity of Sound, and improving the bass
`performance. Secondly, the box wall of the box body is
`bended into wave shape or sawtooth shape, etc., and the
`elastomer material itself has the physical property of high
`damping internal loss to be not easy to excite high frequency
`resonance, thereby being capable of vibration damping,
`effectively absorbing reflected waves in the acoustic cavity,
`and improving the purity of sound. Thirdly, via the loud
`speaker closed box design, the air inside the cavity is isolated
`from the outside, and the vibration of the loudspeaker dia
`phragm will make the air inside the cavity to be repeatedly
`compressed and dilatated. 1) The box body of the elastomer
`loudspeaker has elasticity, and the material is soft rubber or
`other elastomer material. The box wall is provided with bends
`of wave shape or sawtooth shape. The loudspeaker unit is
`mounted to the baffle of the box body. The vibration force of
`the diaphragm of the loudspeaker unit drives the box body to
`retract, and the box body acts as a Sound radiator to radiate
`low frequency. Since the box body of a conventional loud
`speaker is hard rigid wood, or hard plastic, Stone, and organic
`glass, the loudspeaker unit is mounted to the box body, and
`the force applied to the box body does not make the box body
`to retract to radiate low frequency. 2) Via the closed box
`design of the elastomer loudspeaker box system, the force
`produced by the loudspeaker diaphragm drives the elastic box
`body to radiate low frequency Sound, thereby extending the
`bass response and improving the bass effect. However, in a
`conventional closed box, the force produced by the loud
`speaker diaphragm is directly applied to the hard box body,
`which produces high frequency noise and adversely affects
`the purity of sound. 3) In the closed box design of the elas
`tomer loudspeaker box system, for the elastic box body is
`involved in the resonance, the impedance response character
`istic of the closed box system has two resonant maximum
`peaks. The tuning frequency of the box body can be adjusted
`to be lower than the resonant frequency of the loudspeaker
`unit, thereby extending the low frequency. However, a con
`ventional closed box only has one resonant peak, and the
`tuning frequency of the box body is higher than the resonant
`frequency of the loudspeaker unit, which results in failure to
`extend the low frequency.
`0.015 The characteristic and the technical solution of the
`present invention are best understood from the following
`detailed description with reference to the accompanying fig
`ures, but the figures are only for reference and explaining, not
`to limit the scope of the invention.
`BRIEF DESCRIPTION OF THE DRAWINGS
`0016 FIG. 1 is a sectional view showing the internal struc
`ture of an elastomer loudspeaker box system in accordance
`with an embodiment of the present invention;
`
`0017 FIG. 2 is a side elevational view of an elastomer
`loudspeaker box system in accordance with an embodiment
`of the present invention;
`0018 FIG. 3 is a perspective view of an elastomer loud
`speaker box system in accordance with an embodiment of the
`present invention;
`(0019 FIG. 4 is similar to FIG. 3 with a portion cutout;
`0020 FIG. 5 is a force diagram of the symbolic mechani
`cal system of an elastomer loudspeaker box body;
`0021
`FIG. 6 is a mechanical circuit diagram of the elas
`tomer loudspeaker box body of the present invention;
`0022 FIG. 7 is a schematic diagram of the impedance
`characteristic curve of the elastomer loudspeaker box system
`of the present invention and the loudspeaker unit;
`0023 FIG. 8 is a schematic diagram of the impedance
`characteristic curve of a conventional loudspeaker closed box
`system and the loudspeaker unit;
`0024 FIG.9 is a schematic diagram comparing the imped
`ance characteristic curve of an elastomer loudspeaker box
`system of the present invention with a conventional loud
`speaker closed box system;
`0025 FIG.10 is a schematic diagram comparing the sound
`pressure characteristic curve of an elastomer loudspeakerbox
`system of the present invention with a conventional loud
`speaker closed box system;
`0026 FIG.11a is a sectional view showing the lengthwise
`section 2 of the box wall of a loudspeaker box being trapezoi
`dal wave;
`0027 FIG.11b is a sectional view showing the lengthwise
`section 2 of the box wall of a loudspeakerbox being triangular
`Wave;
`0028 FIG.11c is a sectional view showing the lengthwise
`section 2 of the box wall of a loudspeaker box being sine
`Wave;
`0029 FIG. 11d is a sectional view showing the lengthwise
`section 2 of the box wall of a loudspeaker box being sawtooth
`Wave;
`0030 FIG.11e is a sectional view showing the lengthwise
`section 2 of the box wall of a loudspeaker box being square
`Wave;
`FIGS. 12a, 12b, 12c, 12d, and 12e are schematic
`0031
`views showing various tubular loudspeaker boxes;
`0032 FIGS. 13a, 13b, and 13c are schematic views show
`ing box-shaped baffles of various shapes; and
`0033 FIGS. 14a and 14b are schematic views showing
`elastomer loudspeaker box systems with two loudspeaker
`boxes.
`
`DESCRIPTION OF THE PREFERRED
`EMBODIMENTS
`0034. Hereinafter, the present invention is described
`detailedly with reference to the accompanying figures.
`0035. As shown in FIGS. 1-4, an elastomer loudspeaker
`box system in accordance with an embodiment of the present
`invention comprises a loudspeaker unit 1, a loudspeaker box
`2, a bottom board 4 and a baffle 5. The loudspeaker box 2 has
`a corrugated tube shape of box body made of elastomer mate
`rial, of which the lengthwise section of the tube wall is bended
`to be wave shape. The tube wall is provided with air holes 3.
`The loudspeaker unit 1 is mounted to the baffle 5 by bonding,
`and certainly, it can also be mounted by means of screws, etc.
`At one end of the loudspeaker box 2, the edge of the box body
`of corrugated tube shape is impacted by shims and then is
`mounted to the baffle 5 via screws, and certainly it can also be
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`mounted via other means such as bonding. The other end of
`the loudspeaker 2 is closed by being bonded to the bottom
`board 4. So, the loudspeaker unit 1, the loudspeaker box 2 and
`the bottom board 4 cooperatively form a closed box system,
`and a cavity is defined among the acoustic cavity at the back
`of the loudspeaker unit 1, the loudspeaker box 2, and the
`bottom board 4.
`0036. In the present embodiment, the material of the loud
`speaker box 2 adopts elastic soft rubber, which has the prop
`erties such as light weight, being waterproof good bursting
`strength and good impact resistance to be convenient for
`being mounted at places for different purposes. Rubber is a
`Viscoelastic high polymer material, and has internal loss of
`high damping. The relative molecular weight distribution of
`rubber matrix is adjustable to be fit for absorbing soundwaves
`of various frequencies. When sound waves come into the
`rubber, a part of medium high frequency Sound wave energy
`does work to change the vibration of the polymer chains and
`side groups of the material, so as to achieve the object of
`absorbing Sound and reducing audible coloration; and, a part
`of comparatively low frequency Sound wave energy does idle
`work, so low frequency is transmitted to improve bass. Cer
`tainly, the loudspeaker box 2 can also adopts other elastomer
`composite material. Such as polyurethane (PU) elastomer,
`high density elastic sponge, rubberized cloth, TPO (thermo
`plastic elastomer rubber) and so on.
`0037. The loudspeaker box 2 has damping effect to be not
`easy to excite high-order resonance, since the material of the
`loudspeaker box 2 itself has the physical property of internal
`loss of high damping. The lengthwise section of the tube wall
`is wave shape, of which the concavo convex bends can
`absorb, restrain and improve the messy reflected waves pro
`duced inside the box body, so as to reduce audible coloration,
`reduce harmonic distortion and increase the purity of Sound.
`0038. The air holes 3 can act as tuning holes, which are
`mainly for adjusting the stiffness of the acoustic cavity of the
`box body, and at the same time for adjusting the resonance
`point of the box body to extend the low frequency. By adjust
`ing the size, arrangement and quantity of the air holes 3, the
`mechanical compliance of the box body can be changed, and
`the resonant frequency of the box body can be adjusted to
`extend low frequency. Also, by compressing the box body to
`let the air in the box body to flow out via the air holes 3, the
`box body can be reduced to be convenient for packaging and
`carrying.
`0039. The bottom board 4 is mainly used in a closed loud
`speaker box, and can also be used in adjusting the resonant
`frequency and radiated Sound pressure of the loudspeaker
`box. By controlling and deploying the mass, size or material
`of the bottom board, the resonant frequency and radiated
`sound pressure value of the box body can be effectively
`changed. The material of the bottom board 4 is metal iron
`plate, and can also be paper or rubber.
`0040. The material of the baffle 5 is wood plank, metal or
`plastic, which is mainly for mounting the loudspeaker unit 1
`and the loudspeaker box 2, and is not involved in the radiation
`of the box body.
`0041
`FIG. 5 is a force diagram of the symbolic mechani
`cal system of an elastomer loudspeaker box body. As shown
`in FIG. 5, one end of the spring is fixed, and the other end is
`connected to the object with its equivalent vibration mass
`being m. Under the action of driving force F., by being con
`nected to the spring with its equivalent mechanical compli
`ance being C, the object receives the action of equivalent
`
`mechanical resistance Rim to resist the object vibration veloc
`ity V while the object is moving. And, because one end of the
`spring is connected to the object, the three components have
`the same vibration velocity V. So, a series equivalent circuit
`can be got, that is, as shown in FIG. 6 the mechanical circuit
`diagram of the elastomer loudspeaker box body.
`0042 Via analyzing the circuit, the following formula can
`be got:
`
`F
`W = Zn R
`in
`
`F
`&m - 1
`&Cn
`
`0043. Wherein:
`0044 e=2tf
`0045 j=V-1
`0046) V-vibration velocity
`0047 m equivalent mass of the loudspeaker
`0048 C equivalent mechanical compliance of the elas
`tomer box body
`0049 Rinternal friction caused by the repeated spring
`deformation, air viscosity resistance, and radiation imped
`aCC
`0050 F-driving force of the loudspeaker
`0051 Zm-mechanical impedance
`0052. When the mechanical reactance component of Zm
`equals to 0, that is
`
`en - 1
`&Cn
`
`= 0,
`
`at this frequency, the vibration velocity
`
`at the two sides of this frequency, V reduces sharply, so as to
`get the resonance frequency
`
`in other words, the elastomer box body is involved in the
`resonance to act as a radiator, thereby radiating the low fre
`quency to improve bass.
`0053 An actual test is described below to show the fre
`quency response effect of the present invention. FIG. 1 shows
`a 3.6MM loudspeaker full range unit product. The FO of the
`unit is 180 HZ, and the unit is mounted to the loudspeaker box
`being an elastomer. The box body is provided with bends of
`wave shape, and the box body is elastic and is retractable
`freely. The material of the box body is soft rubber. The box
`body is of the design of closed box, and its inside volume is
`0.141 L.
`0054 By testing its impedance characteristic, the response
`is shown in FIG. 7. In FIG. 7, the thick curve 71 is the
`impedance versus frequency characteristic curve of the elas
`tomer loudspeaker box system, and the thin curve 72 is the
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`impedance versus frequency characteristic curve of the loud
`speaker unit. As shown in the figure, the impedance versus
`frequency characteristic curve of the elastomer loudspeaker
`box system has two maximum peaks that indicate two reso
`nance circuits. One resonance circuit is the resonance of the
`closed box loudspeaker unit and the acoustic cavity mechani
`cal compliance, and the other resonance circuit is the reso
`nance of the loudspeaker unit and the elastic box body
`mechanical compliance, which form a parallel resonant cir
`cuit. Also as shown in the figure, the resonant frequency of the
`box body is 100 HZ, which has extended low frequency. FIG.
`8 is a schematic diagram of the impedance characteristic of a
`conventional loudspeaker closed box system. In FIG. 8, the
`thick curve 81 is the impedance versus frequency character
`istic curve of a traditional loudspeaker closed box system, and
`the thin curve 82 is the impedance versus frequency charac
`teristic curve of the loudspeaker unit. As shown in the figure,
`the impedance versus frequency characteristic curve of the
`conventional loudspeaker closed box system has only one
`peak that indicates only one resonance circuit. The resonance
`circuit is the resonance of the loudspeaker unit and the acous
`tic cavity mechanical compliance. The resonant frequency of
`the box body is 210 HZ, and the low frequency is shifted up.
`0055 FIG.9 is a schematic diagram comparing the imped
`ance characteristic of an elastomer loudspeaker box system
`with a conventional loudspeaker closed box system. In FIG.
`9, the thick curve 91 is the impedance versus frequency char
`acteristic curve of the elastomer loudspeaker box system, and
`the thin curve 92 is the impedance versus frequency charac
`teristic curve of the conventional loudspeaker closed box
`system. As obviously shown in the figure, the impedance
`characteristic of the elastomer loudspeaker box has two reso
`nant maximum peaks, and the conventional loudspeaker
`closed box system only has one. The resonant frequency of
`the elastomer loudspeaker box body is 100 HZ, and the reso
`nant frequency of the conventional loudspeaker box is 210
`HZ. So, the elastomer loudspeaker box extends the low fre
`quency.
`0056 FIG. 10 is a schematic diagram comparing the near
`field Sound pressure characteristic of an elastomer loud
`speaker box system with a conventional loudspeaker closed
`box system. In FIG. 10, the thick curve 101 is the sound
`pressure versus frequency curve of the elastomer loudspeaker
`box system, and the thin curve 102 is the sound pressure
`Versus frequency curve of the conventional loudspeaker
`closed box system. As obviously shown in the figure, the
`sound pressure level of the elastomer loudspeaker box starts
`being increased at the resonant frequency of 100 HZ, which is
`1.5 dB higher than the conventional loudspeaker closed box
`system, so, the low frequency is extended and the Sound
`pressure is increased.
`0057. In summary, the elastomer loudspeaker box system
`of the present invention, by the mass, the elasticity and the
`damping control method of its mechanical system and acous
`tics system, which utilizes the box body as a radiator of Sound,
`can extend the low frequency characteristic and increase the
`purity of sound.
`0058. The above said preferred embodiments of the
`present invention are described detailedly for those skilled in
`the art to understand the present invention. But it is to be
`
`understood that all the modifications and changes according
`to the characteristic and spirit of the present invention are
`involved in the protected scope of the present invention.
`0059 For example, the lengthwise section of the box wall
`of the loudspeaker box can be bended into different wave
`shapes. FIGS. 11a-11e in turn show the lengthwise section of
`the box wall of an elastomer loudspeaker box, and the length
`wise section is bended respectively into different wave
`shapes, that is, trapezoidal wave, triangular wave, sine wave,
`sawtooth wave, and square wave.
`0060 Also, the geometric shape of the elastomer loud
`speaker box structure is basically tubular, and the specific
`outline can be changed with various forms. As shown in
`FIGS. 12a-12e, the elastomer loudspeaker box in turn is a
`square tube, a triangular tube, a cylindrical tube, a tapered
`tube with its caliber being gradually reduced, and an assem
`bly of two pieces of tubes.
`0061 Furthermore, the baffle 5 can be a box-shaped baffle
`composed of multiple baffles, which is used to be mounted to
`the loudspeaker unit and the elastomer loudspeaker box.
`Moreover, the baffle 5 is defined with a cavity thereinin. By
`adjusting the size of the cavity of the box-shaped baffle, the
`Volume of the acoustic cavity of the box body can be changed,
`thereby reducing the nonlinear distortion, extending the bass
`response towards low side, and improving the low frequency.
`FIGS.13a-13c show elastomer loudspeaker box systems with
`a box-shaped baffle, and wherein, an inverted tube 6 is pro
`vided inside the box-shaped baffle in FIG. 13b and FIG. 13c.
`0062 Moreover, the elastomer loudspeaker box system
`can also comprise two or even more loudspeaker boxes, and
`FIGS. 14a and 14b show systems with two loudspeaker boxes
`made of elastomer.
`0063 Although the present invention has been described
`in detail with above said embodiments, but it is not to limit the
`Scope of the invention. So, all the modifications and changes
`according to the characteristic and spirit of the present inven
`tion, are involved in the protected scope of the invention.
`
`What is claimed is:
`1. An elastomer loudspeaker box system comprising a
`loudspeaker box, a loudspeaker unit, a baffle and a bottom
`board; the loudspeaker box being made of elastomer material,
`and the tube wall of the loudspeaker box being bended to form
`a corrugated tube shape of box body, whereby the box body of
`the loudspeaker box is elastic and is retractable freely; the
`loudspeaker unit being mounted to the baffle: one end of the
`loudspeaker box being mounted to the baffle, and the other
`end being closed by the bottom board, whereby the loud
`speaker unit, the loudspeakerbox and the bottom board coop
`eratively form a closed box system.
`2. The elastomer loudspeaker box system of claim 1,
`wherein the loudspeaker box is formed by more than one
`piece of corrugated tube shape of box bodies of which the
`tube wall is bended, and the corrugated tube shape of box
`bodies made of elastomer material are connected as an assem
`bly.
`3. The elastomer loudspeaker box system of claim 1,
`wherein the lengthwise section of the box wall of the loud
`speaker box is bended into wave shape or Sawtooth shape.
`4. The elastomer loudspeaker box system of claim 3,
`wherein the box wall of the loudspeaker box is provided with
`air holes.
`5. The elastomer loudspeaker box system of claim 1,
`wherein the elastomer material is elastic soft rubber.
`
`Quest Ex. 1015
`
`

`

`US 2011/0216933 A1
`
`Sep. 8, 2011
`
`6. The elastomer loudspeaker box system of claim 5,
`wherein the loudspeaker unit is mounted to the baffle by
`bonding or by means of Screws.
`7. The elastomer loudspeaker box system of claim 6,
`wherein the loudspeaker box is mounted to the baffle by
`bonding or by means of Screws.
`8. The elastomer loudspeaker box system of claim 7.
`wherein the shape of the loudspeaker box is cylindrical.
`
`9. The elastomer loudspeaker box system of claim 7.
`wherein the baffle is box-shaped.
`10. The elastomer loudspeaker box system of claim 9.
`wherein an inverted tube is arranged inside the box-shaped
`baffle.
`
`Quest Ex. 1015
`
`