KR101419202B1 - Full range plane speaker unit - Google Patents

Abstract

The present invention relates to a full range plate speaker unit with high sound quality and high efficiency. The full range plate speaker unit comprises: a lower yoke plate with a plurality of first sound pressure holes spaced apart from one another at constant intervals on the entire plane; a first magnetic member stacked on the lower yoke plate and including a plurality of first magnetic shells arranged on the entire plane being spaced apart one another at constant intervals, wherein magnetic pole positions first magnetic shells of are alternated in an x-axis direction and maintained in a y-axis direction; a diaphragm stacked on the first magnetic member, wherein a linear parallel/series thin film circuit is installed on at least one surface of the top and bottom surfaces; a second magnetic member stacked on the diaphragm and including a plurality of second magnetic shells arranged at positions on the entire plane corresponding to positions of the first magnetic shells being spaced apart one another at constant intervals, wherein magnetic pole positions of the second magnetic shells are the opposite to those of the first magnetic shells arranged at the corresponding positions; and an upper yoke plate including a plurality of second sound pressure holes arranged at positions corresponding to the positions of the first sound pressure holes on the entire plane being spaced apart from one another.

Description

High-quality, high-efficiency full-range flat-panel speaker unit {FULL RANGE PLANE SPEAKER UNIT}

The present invention relates to a flat speaker unit, and more particularly to a full-range flat speaker unit for reproducing sound in a full-range area.

The speaker is a device that changes the electric signal into the vibration of the air and allows the user to feel the sound from the ear. By driving the voice coil through the magnetic circuit composed of the permanent magnet, the upper and lower plate and the center pole, So as to reproduce the voice.

Speakers usually refer to dynamic speaker units, and current dynamic speaker units have limitations in that split vibration, transient characteristics, and resonance occur due to the mass and volume of the diaphragm structure, resulting in negative distortion. This is because the mechanical vibration signal is delayed by the inertia of the diaphragm as compared with the electrical signal.

1 is a diagram showing a general structure of a dynamic speaker unit. Since the dynamic speaker unit has a basic structure of the diaphragm plate deformed or changed for half a century but the basic structure is not particularly changed, the above-mentioned problems of the dynamic speaker unit will be described in detail with reference to FIG.

Referring to FIG. 1, in the dynamic speaker unit, an electric voice signal is applied to the input terminal 4, an electric current flows to the voice coil 9 positioned between the two magnets 11 by the applied electric voice signal, The voice coil 9 vibrates according to Fleming's left-hand rule. The vibrating mechanical signal is transmitted to the bobbin 6 and to the cone (diaphragm) 3 through the adhesive. The signal transmitted to the cone (3) is transmitted from the centripetal point (the point at which the mechanical signal of the coil is first received) to the circular outline. At the same time, the vibration transmitted to the outer periphery is reflected back to the center point, and the reflected vibration wave and the vibration wave that starts to vibrate the voice coil 9 due to the vibration of the voice coil 9 are overlapped with each other according to the frequency So that the sound generated by the vibration is distorted. In addition, the structure of such a conduit has structural defects that can not respond to fast electrical voice signals as the volume becomes bulky and consequently weight is increased. As a result, the sound quality is degraded due to the transient characteristics and the divided vibration, and the sound is limited in distortion. In particular, the transient characteristics and the distortion of the sound due to the split vibration occur very much in the high frequency range, and the limitation in the high frequency range makes it impossible to reproduce the entire audible frequency band with one speaker do.

In order to solve such a problem, conventionally, the bass is divided into bass, mid, and treble by changing the speaker size or the like, and a bass unit, a woofer, a squawker, Tweeter, and tweeter). By combining the units for each band, it is possible to reproduce the sound in the whole frequency range of the audible frequency. However, in the case of such a configuration, there is another problem that the sound quality is degraded and the sound is distorted due to the problems such as crossover distortion caused by the use of the network distributor, loss of the sense of relative position caused by separation of the units per band.

In addition, since a dynamic speaker uses a voice coil, pink noise, which is an irregular vibration due to a coil, is inevitably generated, and a voice signal applied to the microphone is converted into a voice signal from the speaker by the transient characteristics generated by the diaphragm structure There is a limit in howling howling generated in the process.

In addition, since the bobbin 6 and the cone 3 are bonded to each other by an adhesive, dynamic loudspeakers have various other problems such as distortion of sound caused by an adhesive.

Meanwhile, in order to solve the problem of the dynamic speaker having the above-described structure, a flat speaker has been designed, but still has various limitations.

Specifically, there is a patent of New Transducers Limited, which is disclosed in International Publication No. WO 1997/09846 (entitled: Panel Loudspeaker) as a conventional flat speaker. The configuration of the conventional flat speaker is shown in Fig. Conventional flat loudspeakers have a rectangular frame 11 with a resilient damper and a distributed mode sound radiation plate 12 is supported along the inner periphery of the damper. The transducer 14 is safely mounted on or in a flat plate at a predetermined position indicated by the dimensions X and Y and the coordinates of this position are such that the bending wave propagates inside the plate to resonate the plate to radiate the acoustic output , Calculated in the manner as disclosed in the invention filed by New Transducers Limited. The transducer 14 is driven by a signal amplifier 16, for example an audio amplifier, which is connected to the transducer by means of a conductor 15. The amplifier load and required power can be fully standardized, similar to conventional conical loudspeakers (the conical type of dynamic speaker described above) and the sensitivity is 86-88 dB / watt under room load conditions. The amplifier load impedance is typically 6 ohms and the processing power is 20 - 80 watts. When the flat core and / or the skin is metal, they serve to absorb heat, and therefore the processing power is improved because the transducer 14 can remove the heat generated from the motor coil of the transducer. However, in such a conventional flat speaker, vibration is not smooth due to the influence of inertia due to plate thickness and mass, and still problems of transient characteristics and split vibration have occurred. Further, if the thickness of the diaphragm is reduced, a dead zone where the transducer is not attached is vibrated arbitrarily and distorted.

In addition, in such a conventional flat-plate speaker, the more distant the portion from the transducer attachment site, the more the distortion is caused by the plate resonance phenomenon which is the inherent resonance of the flat plate itself. Thus, . In general, the distortion of the sound is significantly increased as the flat plate is enlarged and the speaker is attempted to expand to the low-frequency range. Therefore, the conventional flat speaker still reproduces the entire audible frequency band without distorting the sound quality or the sound with only one speaker It was impossible.

International Publication No. WO 1997/09846

In order to solve the above-described problems, the present invention modifies the structure of a conventional flat speaker unit to minimize split vibrations, transient characteristics, resonance, etc., thereby enabling sound reproduction without sound quality degradation or sound distortion in the full- And to provide a high-quality, high-efficiency full-range flat-panel speaker unit with increased efficiency.

According to an aspect of the present invention, there is provided a vacuum cleaner comprising: a lower yoke plate having a plurality of first sound pressure holes spaced apart from each other at regular intervals; A plurality of first magnetic cells stacked on the lower yoke plate, wherein the plurality of first magnetic cells are arranged such that a polarity position is crossed in the x-axis direction and a polarity position is maintained in the y- ; A diaphragm stacked on the first magnetic member and having a linear parallelepipedic thin film circuit on at least one surface of an upper surface and a lower surface; A plurality of second magnetic cells are arranged on the entire plane so as to be spaced apart from each other at a position corresponding to the position of the plurality of first magnetic cells and the position of the polarity of the second magnetic cell corresponds to The second magnetic member being opposite to the first magnetic cell disposed at a position where the second magnetic member is disposed; And an upper yoke plate having a plurality of second sound pressure holes spaced apart from each other by a predetermined distance and arranged on the entire plane at a position corresponding to the position of the plurality of first sound pressure holes, and a high efficiency, full-range flat speaker unit .

Here, the linear straight type parallel thin film circuit may include points corresponding to the centers of the spacing portions between adjacent first magnetic cells on the x-axis or points corresponding to the centers of the spacing portions between adjacent second magnetic cells on the x- So that current flows through them.

Specifically, the linear parallelepiped thin film circuit includes a support plate coupled to at least one surface of an upper surface and a lower surface of the diaphragm; And a thin film printed circuit board including a plurality of U-shaped circuits printed in a line on the support plate, wherein the plurality of U-shaped circuits can be connected in series and parallel so as to have an impedance to an amplifier output, Such a linear serial parallel thin film circuit may be formed by stacking at least two thin film printed circuit boards.

The linear parallelepiped thin film circuit may further include: a support frame; A plurality of circuit support pillars spaced apart from each other at both sides of one side of the support frame at regular intervals; And a plurality of U-shaped circuits fixed on circuit supporting columns provided on one lateral side and wound on corresponding circuit supporting columns provided on the other side of the lateral side, and the plurality of U-shaped circuits are matched to have an impedance to the amplifier output So that they can be directly connected in parallel.

According to the full-range flat speaker unit of the present invention, since the vibration plate, the transient characteristic, and the resonance are minimized by controlling the entire diaphragm plane by a plurality of magnetic cells and the linear circuit, Can be provided. In addition, the full-range flat speaker unit of the present invention minimizes the transient characteristics, so that the howling oscillation due to the microphone can be minimized.

In addition, since the full-range flat panel speaker unit of the present invention uses a thin film linear circuit, the problem of pink noise occurring when a coil is used can be minimized.

In addition, according to the full-range flat speaker unit of the present invention, since the entire diaphragm plane is uniformly controlled by the plurality of magnetic cells and the linear circuit, the dead zone, which is not controlled by the circuit and the magnet, is minimized, And there is a merit that the distortion of the sound hardly occurs in the low-frequency range.

In the full-range flat speaker unit of the present invention, the vibrations generated in the linear circuit directly vibrate the diaphragm, so that the output is increased, and the current flows in the empty space in the center of the four magnetic cells in the upper, The output is increased compared to the structure in Fig.

In addition, according to the full-range flat speaker unit of the present invention, it is possible to manufacture a magnetic member, a circuit, etc. as a thin film, thereby reducing the volume and mass of the speaker unit, This makes it possible to manufacture even the smallest possible speaker.

In addition, according to the full-range flat panel speaker unit of the present invention, it is possible to fabricate a thin-film circuit board so as to have a desired output impedance by serial-parallel matching circuits corresponding to diaphragms of a desired width, A large thin flat speaker unit can be manufactured.

1 is a view briefly explaining a structure of a conventional dynamic speaker.
2 is a view briefly explaining a structure of a conventional flat speaker.
3 is an exploded perspective view showing a schematic configuration of a full-range flat speaker unit according to an embodiment of the present invention.
4 is a cross-sectional view illustrating a schematic configuration of a full-range flat panel speaker unit according to an embodiment of the present invention.
FIG. 5 is a view showing a current flow and an external magnetic flux formed in a full-range flat speaker unit according to an embodiment of the present invention.
6 is a circuit diagram of a linear type parallel-parallel thin film circuit in a full-range flat panel speaker unit according to an embodiment of the present invention.
7 is a view showing a first embodiment of a linear parallelepiped thin film circuit in a full-range flat panel speaker unit according to an embodiment of the present invention.
FIG. 8 is a diagram showing a second embodiment of a linear parallelepiped thin film circuit in a full-range flat panel speaker unit according to an embodiment of the present invention.
9 is a view showing a first embodiment of a full-range flat speaker unit according to the present invention.
10 is a view showing a second embodiment of a full-range flat speaker unit according to the present invention.
11 is a view showing a third embodiment of a full-range flat speaker unit according to the present invention.
12 is a view showing a fourth embodiment of a full-range flat panel speaker unit according to the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. It is to be understood, however, that the drawings are for the purpose of illustration only and are not intended to limit the invention to the particular embodiments.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.

3 is an exploded perspective view showing a schematic configuration of a full-range flat panel speaker unit according to an embodiment of the present invention. 4 is a cross-sectional view illustrating a schematic configuration of a full-range flat panel speaker unit according to an embodiment of the present invention. FIG. 5 is a view showing a current flow and an external magnetic flux formed in a full-range flat speaker unit according to an embodiment of the present invention.

3 to 5, a full-range flat panel speaker unit according to the present invention includes a lower yoke plate 100, a first magnetic member 200, a linear straight parallel thin film circuit 300, a diaphragm 400, 2 magnetic member 500, and upper yoke plate 600 as components. Hereinafter, the configuration will be described in detail with reference to the drawings.

The lower yoke plate 100 together with the upper yoke plate 600 induces a magnetic closed loop. For this purpose, the lower yoke plate 100 is made of a material having a high permeability characteristic of pure iron. In addition, the lower yoke plate 100 also serves as a base for supporting the other configurations.

On the other hand, the lower yoke plate 100 has a plurality of first sound pressure holes 110 spaced apart at regular intervals and arranged on the entire plane. This is to secure a sound pressure passage so that sound due to the vibration of the diaphragm 400 is transmitted to the outside.

3, the first sound pressure hole 110 has a position corresponding to the center (x) of the empty space at the center of the four first magnetic cells 210, the centers of which are adjacent to each other, And the center of the first sound pressure hole 110 is spaced apart by the same distance as the center of the four adjacent first magnetic cells 210. This corresponds to the vibration of the diaphragm 400 caused by the vibration of the circuit 300 by the Fleming left-hand rule so that the center of the first sound pressure hole 110 corresponds to the point where the thin film circuit 300, So that the sound generated by the speaker is most effectively transmitted to the outside. For reference, "correspondence" means that the x-axis and y-axis coordinates are the same and only the z-axis coordinate is different.

The diameter of the first sound pressure hole 110 is preferably 1 to 2 times the width a of the first magnetic cell 210. This is because if the diameter of the first sound pressure hole 110 is smaller than the width a of the first magnetic cell 210, the sound pressure passage becomes too small to prevent the flow of sound pressure, so that reproduction of the low frequency band is difficult, And when the diameter of the first sound pressure hole 110 is twice the width a of the first magnetic cell 210, the first sound pressure hole 110 occupies the lower sound pressure hole 110 in the lower yoke plate 100 This is because the weight is too large to support other structures.

The first sound pressure hole 110 may be formed in a cylindrical shape having the same diameter as the hole formed in the inner surface of the lower yoke plate 100 and the hole formed in the outer surface of the lower yoke plate 100, The outer diameter of the hole may be a large cone or trumpet. In particular, when the first sound pressure hole 110 is configured as a cone or trumpet, sound is more effectively transmitted to the outside.

Meanwhile, it is preferable that the area of the lower yoke plate 100 is equal to the area of the diaphragm. This is to induce a magnetic closed circuit so as to surround the entire diaphragm 400, thereby minimizing split vibration, transient characteristics, and the like.

Next, the first magnetic member 200 and the first magnetic member 200 convert the electrical signals of the linear series parallel thin film circuit 300 into mechanical signals.

3, the first magnetic member 200 is stacked on the lower yoke plate 100, and a plurality of first magnetic cells 210 are arranged in the x- And the positions of the polarities in the y-axis direction are maintained. This is because a large number of magnetic cells are arranged two-dimensionally on a plane (for example, arranged in a grid pattern as shown in Fig. 3), and a point at which the planar vibrating plate is vibrated by the magnetic cell is uniformly distributed The transient vibration, the transient characteristics and the resonance are effectively suppressed, thereby minimizing distortion and sound quality degradation. In addition, it is possible to minimize the distortion in the low frequency band by minimizing the dead zone (area where the vibration due to the coil is not properly transmitted) of the flat type diaphragm, which is a problem of the conventional flat speaker, It is for this reason.

The first magnetic member 200 may be formed to have the same dimensions as the diaphragm 400 (more specifically, the diaphragm 420 forming the diaphragm 400). This is to minimize the split vibration, transient characteristics and the like by allowing the magnetic member to control the entire diaphragm 400.

Also, the first magnetic cell 210 may be formed by deforming into a rectangular column or a circular column shape.

In addition, the width (a) of the first magnetic cell 210 is preferably 1 to 5 mm. This is because there is difficulty in manufacturing when the width of the first magnetic cell 210 is less than 1 mm, and when the width of the first magnetic cell 210 exceeds 5 mm, control of the diaphragm due to the magnetic cell is not effectively performed and negative distortion may occur. Here, the width (a) of the first magnetic cell 210 is the length of the side of the bottom of the rectangular cell, or the diameter of the bottom of the circular cell.

It is preferable that the spacing b and c between two adjacent first magnetic cells 210 is 0.5 times the width a of the first magnetic cell 210. This is to sufficiently maintain the sound pressure passage while effectively controlling the diaphragm by the magnetic cell, thereby minimizing sound quality degradation and sound distortion. Here, the spacing between the first magnetic cells 210 is an interval between two adjacent first magnetic cells 210 when the first magnetic cells 210 are rectangular columns, and the spacing between the first magnetic cells 210 Is a distance obtained by subtracting the diameter of the first magnetic cell 210 from the distance between the centers of the adjacent two first magnetic cells 210.

In addition, the length of the first magnetic cell 210 is preferably 0.2 mm to 40 mm. When the length of the first magnetic cell 210 is less than 0.2 mm, the coercive force is low and the efficiency is rather low. When the length is more than 40 mm, the volume and mass of the magnet are increased and the efficiency is lowered.

Next, the linear series parallel thin film circuit 300 converts an applied electrical voice signal to a mechanical signal (vibration) by interaction with the magnetic members 200 and 500 to apply the electrical voice signal to the vibration plate 400, .

3 and 4, the linear parallelepiped thin film circuit 300 is installed on at least one of the upper surface and the lower surface of the diaphragm 400 stacked on the first magnetic member 200 . This is because the linear series parallel thin film circuit 300 directly vibrates the diaphragm 400 to minimize energy loss and to allow the circuit to be positioned between the first magnetic member 200 and the second magnetic member 500 to be.

3 and 4, the linear straight line parallel thin film circuit 300 includes points corresponding to the center of the spacing between adjacent first magnetic cells 210 on the x-axis or x-axis And the current passes through the points corresponding to the center of the spacing between the second magnetic cells 510 adjacent to the second magnetic cells 510. [ 5, when two adjacent first magnetic cells 210 and two second magnetic cells 510 corresponding to the first magnetic cells 210, i.e., between four magnetic cells 210, In the case of having such a structure, mechanical vibrations due to the interaction of the magnetic cell and the circuit occur at a number of points over the entire plane of the diaphragm plane to vibrate the diaphragm, , Distortion of the sound caused by resonance is minimized, and energy loss is also reduced, so that the sound can be reproduced in the full-range region with high sound quality and high efficiency.

FIG. 6 is a circuit diagram of a linear type parallel flat thin film circuit in a full-range flat panel speaker unit according to an embodiment of the present invention, and FIG. 7 is a schematic view of a full-range flat panel speaker unit according to an embodiment of the present invention, FIG. 8 is a view showing a first embodiment of a thin film circuit, and FIG. 8 is a diagram showing a second embodiment of a linear parallelepiped thin film circuit in a full-range flat panel speaker unit according to an embodiment of the present invention. Hereinafter, the linear series parallel thin film circuit 300 will be described in more detail with reference to FIGS. 6 to 8. FIG.

As shown in FIG. 6, the linear series parallel thin film circuit 300 includes a U-shaped circuit to which a negative voltage is applied at the other end of the positive voltage (here, a U- 310, a plurality of U-shaped circuits 310 are arranged in a line, and the plurality of U-shaped circuits 310 arranged in series are connected to each other in series or in parallel so as to have an impedance to the amplifier output. In this case, the plurality of U-shaped circuits 310 may be arranged in a line on one layer, and may be arranged in a line on one layer and then stacked in layers. Then, a plurality of U- They may be connected in series or in parallel so as to have an impedance to the amp output. In this case, a plurality of U-shaped circuits 310 are provided on the entire diaphragm (more specifically, the diaphragm constituting the diaphragm) while adjusting the impedance to the amplifier output, and the U-shaped circuit 310, Can be adjusted according to the user's intention, and the circuit can be designed according to the desired diaphragm size while having the desired output.

Referring to FIGS. 7 and 8, the linear parallelepiped thin film circuit 300 according to a first embodiment of the present invention will be described with reference to FIG. 7, And a plurality of U-shaped circuits 310 printed in a line on the support plate 330. The U-shaped circuit 310 includes a plurality of U- Here, the plurality of U-shaped circuits 310 are serially connected in parallel so as to have an impedance to the amplifier output as described above.

The thin film printed circuit board of the linear straight type parallel thin film circuit 300 may further include a plurality of insulating support lines 320 spaced apart from each other at a predetermined interval in the horizontal direction on the support plate 330. Here, the insulating support line 220 serves as a damper.

In addition, the linear straight line parallel thin film circuit 300 may be formed on at least one surface of the diaphragm 400, in which at least two thin film printed circuit boards are stacked.

As described above, since the first embodiment of the linear type serial parallel thin film circuit 300 uses a thin film printed circuit board, the circuit becomes linear, so that the pink noise phenomenon can be minimized as compared with the speaker unit using the conventional coil. Unlike a conventional flat speaker unit, a circuit can be mounted on a diaphragm in a thin film form.

8, the linear straight line parallel thin film circuit 300 includes a support frame 340 and a support frame 340 which are spaced apart from each other by a predetermined distance on both lateral sides of one side of the support frame 340 A plurality of circuit support pillars 350 and a plurality of U-shaped circuits 310 which are fixed to the circuit support pillars 350 provided at one side of the side road and are wound around the corresponding circuit support pillars 350 installed at the other side of the road. Wherein the plurality of U-shaped circuits 310 are serially connected in parallel so as to have an impedance to an amplifier output.

8, the linear parallelepiped thin film circuit 300 includes a plurality of insulated supporting line supporting pillars 360 spaced apart from each other at regular intervals on both sides of one side of the supporting frame 340, And a plurality of insulating supporting lines 320 installed on the insulating supporting line supporting columns 360 installed on the longitudinal sides.

In addition, the plurality of U-shaped circuits 310 may be provided on the circuit support pillars 350 in multiple layers in the linear series parallel thin film circuit 300.

The second embodiment of the linear parallelepiped thin film circuit 300 has a structure in which the support frame 340 faces the first magnetic member 200 or the second magnetic member 400, Is provided on at least one surface of the upper surface and the lower surface.

In the second embodiment of the linear straight line parallel thin film circuit 300 described above, the circuit can be installed with the circuit support pillars 350 while maintaining the tension, and since a linear circuit other than the coil type can be used, The phenomenon can be minimized and a circuit can be installed in the form of a thin film on the diaphragm.

Next, the diaphragm 400 receives a mechanical signal (vibration) of the linear parallelepiped thin film circuit 300 and vibrates to form a sound.

Specifically, the diaphragm 400 is stacked on the first magnetic member 200 as shown in FIGS. More specifically, the diaphragm 400 is stacked at a predetermined distance from the first magnetic member 200 so that a circuit provided on the lower surface of the diaphragm 400 is positioned above the first magnetic member 200 So that it is not placed on the first magnetic cell 210 of the first magnetic member 200.

In addition, the diaphragm 400 is provided with the linear straight line parallel thin film circuit 300 described above on at least one of the upper surface and the lower surface. This is to transmit mechanical signals generated in the circuit directly to the diaphragm 400 to minimize energy loss.

3, the diaphragm 400 includes a frame 410 and a diaphragm 420 formed inside the frame 410. The diaphragm 400 is made of a material that is required by the user Various kinds of materials known to those skilled in the art can be selected and used.

10 and 12, which show an embodiment of a full-range flat panel speaker unit according to the present invention, the diaphragm 400 includes a hole 430 ) Can be formed. This is to reduce the load on the amplitude of vibration of the diaphragm, thereby improving the sound quality and reducing the distortion of the sound.

When the holes 430 are formed in the diaphragm 400, the diaphragm 400 may have a plurality of holes spaced over the entire plane.

Also, the diaphragm 400 may be a flat plate shape as shown in the drawing, or a wrinkle shape in which a plurality of semicircular shapes are arranged in a row in a line. Here, in the case of the corrugated form, the corrugation of the corrugations is located at the center of the portion corresponding to the spacing portion of the circuit provided on the adjacent diaphragm.

Next, the second magnetic member 500 and the first magnetic member 200 serve to convert an electrical signal of the linear series parallel thin film circuit 300 into a mechanical signal.

More specifically, the second magnetic member 500 is stacked on the diaphragm 400, and a plurality of second magnetic cells 510 are arranged at positions corresponding to the positions of the plurality of first magnetic cells 210, And the position of the polarity of the second magnetic 510 cell is opposite to that of the first magnetic cell 410 disposed at the corresponding position.

More specifically, the second magnetic member 500 is stacked on the diaphragm 400 at a predetermined distance. This is because a circuit provided on the upper surface of the diaphragm 400 is disposed on the diaphragm 400, And is not placed on the second magnetic cell (510) of the second magnetic member (500).

3 and 4, the second magnetic member 500 includes a plurality of second magnetic cells 510 at positions corresponding to the positions of the plurality of first magnetic cells 210, And the polarities of the second magnetic cells 510 are opposite to those of the first magnetic cells 410 disposed at the corresponding positions. 4 and 5, in which the four magnets are arranged in such a way that the 360 degree phase angle is divided by four 90 degrees in the polarity arrangement as shown in Figs. 4 and 5 Thereby maximizing the energy utilization by increasing the output by maximizing the magnetic field efficiency.

In addition, as in the case of the first magnetic member 200, a large number of magnetic cells are arranged two-dimensionally on a plane (arranged in a grid pattern as shown in Fig. 3) Distribution characteristics, resonance and the like, thereby minimizing distortion and sound quality deterioration. In addition, the present invention is intended to minimize sound deadening in a low-frequency band by minimizing a dead zone that is not vibrated by a coil among planar diaphragms, which is a problem of a conventional flat speaker.

The second magnetic member 500 may be formed to have the same dimensions as the diaphragm 400 (more specifically, the diaphragm 420 forming the diaphragm 400). This is to minimize the split vibration, transient characteristics and the like by allowing the magnetic member to control the entire diaphragm 400.

In addition, the second magnetic cell 510 may be formed by deforming into a rectangular column or a circular column shape.

The width a 'of the second magnetic cell 510 is equal to the width a of the first magnetic cell 210 and the distance a between the adjacent two second magnetic cells 510 (b ', c') are preferably equal to the spacing distance (b, c) between two adjacent first magnetic cells 210. As shown in FIG. 5, the four magnets having the same width around the point where the current flows by the circuit are divided into four 90 degrees by 360 degrees phase angle, thereby making the structure having the maximum magnetic field efficiency, To maximize utilization and increase output. Here, the width (a) of the second magnetic cell 510 is the length of the side of the bottom surface when the square pole is a quadratic pole, and the diameter of the bottom surface when the pole is a win pole. The spacing between the second magnetic cells 510 is a distance between two adjacent second magnetic cells 510 when the second magnetic cell 510 is a quadrangular pole, The distance between the center of the two neighboring second magnetic cells 510 is a distance obtained by subtracting the diameter of the second magnetic cell 510 from the distance between the centers of the adjacent two second magnetic cells 510.

The length of the second magnetic cell 510 is preferably 0.2 mm to 40 mm. When the length of the second magnetic cell 510 is less than 0.2 mm, the coercive force is low and the efficiency is rather low. When the length is more than 40 mm, the volume and the mass of the magnet are increased and the efficiency is decreased.

Next, the upper yoke plate 600 together with the lower yoke plate 100 induces a magnetic closed circuit, and is made of a material having a high permeability of pure iron characteristics.

The upper yoke plate 100 has a plurality of second sound pressure holes 610 spaced apart from each other at positions corresponding to the positions of the plurality of first sound pressure holes 110 and arranged on the entire plane. 4 and 5, the first sound pressure hole 110 and the second sound pressure hole 610 correspond to each other, as shown in FIGS. 4 and 5, so that the sound pressure due to the vibration of the diaphragm 400 is transmitted to the outside. So that sound can be smoothly transmitted to the outside without loss.

Specifically, the second sound pressure hole 610 has a center (x ') and a center of a hollow space at the center of the four second magnetic cells 510, the center of which is adjacent to the first sound pressure hole 110, And the center of the second sound pressure hole 610 is spaced apart from the center of the adjacent four second magnetic cells 510 by the same distance. This corresponds to the vibration of the diaphragm 400 caused by the vibration of the circuit 300 by the Fleming left-hand rule so that the center of the second sound-pressure hole 610 corresponds to the point where the thin film circuit 300, So that the sound generated by the speaker is most effectively transmitted to the outside.

The diameter of the second sound pressure hole 610 is twice as large as the diameter of the first sound pressure hole 110, which is preferable for efficient sound transmission.

The second sound pressure hole 610 may be formed in a cylindrical shape having the same diameter as the hole formed in the inner surface of the upper yoke plate 600 and the hole formed in the outer surface of the upper yoke plate 600, The outer diameter of the hole may be a large cone or trumpet. In particular, when the second sound pressure hole 610 is formed as a cone or trumpet, sound is more effectively transmitted to the outside.

Meanwhile, it is preferable that the area of the upper yoke plate 600 is equal to the area of the diaphragm.

If the full-range flat speaker unit according to the present invention has the above-described structure, a magnetic flux is formed as shown in FIG. 6, in which a phase angle of 360 degrees is divided into two 180 degrees, The magnetic field efficiency is increased as a result of the external magnetic flux exerting the maximum force on the conductor compared to the conventional speaker unit structure in which the current is made to flow. As a result, the output is increased as compared with the conventional speaker unit.

9 to 12 are views showing various embodiments of the full-range flat speaker unit according to the present invention described above. Hereinafter, a brief description will be given with reference to the drawings.

The first embodiment of the full-range flat-plate speaker unit shown in Fig. 9 comprises a lower yoke plate 100 in which cylindrical first sound pressure holes 110 are spaced apart from each other at regular intervals and arranged on the entire plane, A linear parallel / serial circuit 300 including a first magnetic member 200 in which first magnetic cells 210 are spaced apart from each other at regular intervals, and a thin film printed circuit board on which a U-shaped circuit is printed on a support plate, A second magnetic member 500 having a rectangular columnar second magnetic cell 510 spaced apart from the first magnetic cell 210 by a predetermined distance and disposed at a position corresponding to the first magnetic cell 210, And an upper yoke plate 600 having a trumpet-shaped second sound-pressure hole 610 spaced apart from the first sound-pressure hole 110 by a predetermined distance.

The second embodiment of the full-range flat speaker unit shown in Fig. 10 is composed of a lower yoke plate 100 in which first sound pressure holes 110 of a cylindrical shape are spaced apart at regular intervals and arranged on the entire plane, A linear parallel / serial circuit 300 including a first magnetic member 200 in which first magnetic cells 210 are spaced apart from each other at regular intervals, and a thin film printed circuit board on which a U-shaped circuit is printed on a support plate, And a diaphragm 400 provided with a hole 430 at a position where the circuit is not installed and a circular columnar second magnetic cell 510 at a position corresponding to the first magnetic cell 210 The second magnetic member 500 and the first sound pressure hole 110, which are arranged on the entire plane, are spaced apart from each other by a predetermined distance and the truncated cone shape is formed at a position corresponding to the first sound pressure hole 110. [ When the second sound pressure hole 610 is spaced at a predetermined interval And the upper yoke plate 600 is arranged on the entire plane.

The third embodiment of the full-range flat speaker unit shown in Fig. 11 is characterized in that the lower yoke plate 100 in which the first sound-pressure holes 110 in the shape of cylinders are arranged at regular intervals and arranged on the entire plane, A first magnetic member (200) having first magnetic cells (210) spaced apart at regular intervals and arranged on the entire plane, a first magnetic member (200) having circuit holding posts on both side transverse sides of the support frame and fixing one end of a linear circuit to one side support column A linear parallelepiped thin film circuit (300) in which a linear circuit is wound around a circuit supporting column is mounted on a top surface and a bottom surface of a diaphragm (400), and a second magnet (400) having a square columnar shape at a position corresponding to the first magnetic cell The second magnetic member 500 having the cells 510 spaced apart at regular intervals and arranged on the entire plane and the trumpet-shaped second sound pressure holes 610 at positions corresponding to the first sound pressure holes 110 are spaced apart at regular intervals So The upper array on the entire surface yaw includes the oak plate 600.

The fourth embodiment of the full-range flat speaker unit shown in Fig. 12 is composed of a lower yoke plate 100 in which first sound pressure holes 110 in a cylindrical shape are spaced apart from each other at regular intervals and arranged on the entire plane, A first magnetic member (200) having first magnetic cells (210) spaced apart at regular intervals and arranged on the entire plane, a first magnetic member (200) having circuit holding posts on both side transverse sides of the support frame and fixing one end of a linear circuit to one side support column A diaphragm 400 in which a linear parallelepiped thin film circuit 300 in the form of a linear circuit wound around a circuit supporting column is provided on the top and bottom surfaces and a hole 430 is formed in a point where no circuit is provided, The second cylindrical magnetic cells 510 having a circular column shape (the resultant cylindrical shape is not shown accurately as a sectional view) are spaced apart at regular intervals and placed on the entire plane in a position corresponding to the magnetic cell 210 The upper yoke plate 600 having the trumpet-shaped second sound-pressure holes 610 spaced apart from each other by a predetermined distance and arranged on the entire plane at a position corresponding to the opened second magnetic member 500 and the first sound-pressure hole 110 .

When the full-range flat-plate speaker unit according to the present invention has the above-described structure, a plurality of cells arranged at regular intervals on a plane corresponding to the diaphragm, and a point where a large number of currents corresponding thereto flow, Since mechanical vibrations are transmitted directly, mechanical vibrations are generated evenly at many points of the diaphragm, and vibration and resonance are suppressed, and magnetic cells and circuits can be fabricated as thin films, so that volume and mass can be minimized. . As a result, it is possible to minimize distortion and sound quality deterioration caused by split vibration, transient characteristics, resonance and the like, which have been pointed out as a conventional problem, so that it is possible to reproduce sound with minimizing distortion and sound quality deterioration in the full range.

Further, when the full-range flat panel speaker unit according to the present invention has the structure as described above, the mechanical vibration by the circuit is directly transmitted evenly and directly at many points of the diaphragm by the magnetic cell and the circuit, Unlike the conventional flat speaker, there is no problem such as distortion of the sound and poor reproduction in the low-frequency range, and it is possible to reproduce the sound of excellent sound quality in the full range area even if the flat plate is large.

In addition, when the full-range flat speaker unit according to the present invention has the above-described structure, compared to the conventional speaker unit structure, the section where the external magnetic flux exerts the maximum force on the conductor is expanded, .

In addition, since the full-range flat panel speaker unit according to the present invention can reproduce sounds of excellent sound quality in the full range, unlike conventional speakers for bass, midtone, treble, and network distributors, There is an advantage that problems such as loss of sense of orientation are solved.

In addition, according to the full-range flat speaker unit of the present invention, it is possible to manufacture a magnetic member, a circuit, etc. as a thin film, thereby reducing the volume and mass of the speaker unit, This makes it possible to manufacture even the smallest possible speaker.

In addition, according to the full-range flat panel speaker unit of the present invention, it is possible to fabricate a thin film circuit board so as to have a desired output impedance by serial-parallel matching circuits corresponding to a diaphragm having a desired width, A large thin flat speaker unit can be manufactured.

100 lower yoke plate
110 first sound pressure hole
200 first magnetic member
210 first magnetic cell
300 straight linear parallel thin film circuit
310 U-shaped circuit
320 Insulation Support Line (Damper)
330 support plate
340 Support frame
350 Circuit Support Column
360 Insulation Support Line Support Column
400 diaphragm
410 frames
420 diaphragm
430 holes
500 second magnetic member
510 second magnetic cell
600 upper yoke plate
610 Second sound pressure hole

Claims (14)

delete delete A lower yoke plate (100) having a plurality of first sound pressure holes (110) spaced apart at regular intervals and arranged on the entire plane;
The plurality of first magnetic cells 210 are polarized in the x-axis direction and the polarity position is maintained in the y-axis direction. The first magnetic cells 210 are spaced apart from each other by a predetermined distance, A first magnetic member (200) arranged;
A diaphragm 400 laminated on the first magnetic member 200 and having a linear parallelepiped thin film circuit 300 on at least one of the upper and lower surfaces thereof;
A plurality of second magnetic cells 510 are arranged on the entire surface of the vibration plate 400 at positions corresponding to the positions of the plurality of first magnetic cells 210, A second magnetic member 500 for positioning the polarity of the two magnetic cells 510 so as to be opposite to the first magnetic cell 410 disposed at the corresponding position; And
And an upper yoke plate (600) having a plurality of second sound pressure holes (610) spaced apart from each other at a position corresponding to a position of the plurality of first sound pressure holes (110)
The linear straight line parallel thin film circuit (300)
on the points corresponding to the centers of the spacing between the first magnetic cells 210 adjacent to each other on the x-axis or the points corresponding to the centers of the spacing between the second magnetic cells 510 adjacent on the x- As a result,
The linear straight line parallel thin film circuit (300)
A support plate 330 coupled to at least one surface of the upper surface and the lower surface of the diaphragm 400; And
And a plurality of U-shaped circuits (310) printed on the support plate (330) in a line spaced apart from each other,
Wherein the plurality of U-shaped circuits (310) are connected in series and parallel so as to have an impedance to an amplifier output. The high-quality, high-efficiency full-range flat panel speaker unit according to claim 3, wherein the linear straight line parallel thin film circuit (300) is formed in a laminated form of at least two thin film printed circuit boards. A lower yoke plate (100) having a plurality of first sound pressure holes (110) spaced apart at regular intervals and arranged on the entire plane;
The plurality of first magnetic cells 210 are polarized in the x-axis direction and the polarity position is maintained in the y-axis direction. The first magnetic cells 210 are spaced apart from each other by a predetermined distance, A first magnetic member (200) arranged;
A diaphragm 400 laminated on the first magnetic member 200 and having a linear parallelepiped thin film circuit 300 on at least one of the upper and lower surfaces thereof;
A plurality of second magnetic cells 510 are arranged on the entire surface of the vibration plate 400 at positions corresponding to the positions of the plurality of first magnetic cells 210, A second magnetic member 500 for positioning the polarity of the two magnetic cells 510 so as to be opposite to the first magnetic cell 410 disposed at the corresponding position; And
And an upper yoke plate (600) having a plurality of second sound pressure holes (610) spaced apart from each other at a position corresponding to a position of the plurality of first sound pressure holes (110)
The linear straight line parallel thin film circuit (300)
on the points corresponding to the centers of the spacing between the first magnetic cells 210 adjacent to each other on the x-axis or the points corresponding to the centers of the spacing between the second magnetic cells 510 adjacent on the x- As a result,
The linear straight line parallel thin film circuit (300)
A support frame 340;
A plurality of circuit support pillars (350) spaced apart from each other at both sides of one side of the support frame at regular intervals; And
Shaped circuit (310) which is fixed to a circuit support column (350) provided on one lateral side of the circuit board and wound around a corresponding circuit supporting column (350) provided on the other side of the lateral side, and the plurality of U- 310) is coupled in series and parallel to match the impedance of the amplifier output. A high-quality, high-efficiency full-range flat-panel speaker unit. The method according to claim 3 or 5,
The width a 'of the second magnetic cell 510 is equal to the width a of the first magnetic cell 210 and the distance a between the adjacent two second magnetic cells 510 ', c') is equal to the spacing distance (b, c) between two adjacent first magnetic cells (210). The method of claim 6,
The width a of the first magnetic cell 210 is 1 to 5 mm and the spacing b and c of the adjacent two first magnetic cells 210 are equal to the distance a of the first magnetic cell a, High-efficiency, full-range flat-panel speaker unit. The method according to claim 3 or 5,
The first sound pressure hole 110 is formed at a position corresponding to the center x of the center of the four first magnetic cells 210 adjacent to the center of the first sound pressure hole 110, Are spaced apart from each other by the same distance as the center of the four adjacent first magnetic cells 210,
The second sound pressure hole 610 is formed at a position corresponding to the center (x ') of the hollow space at the center of four adjacent second magnetic cells 510, and the second sound pressure hole 610 is formed at a position corresponding to the center Is positioned at an equal distance from the center of the adjacent four second magnetic cells (510). The method according to claim 3 or 5,
Wherein the diameter of the first sound pressure hole (110) is 1 to 2 times the width of the first magnetic cell. The method of claim 9,
And the diameter of the second sound pressure hole (610) is twice the diameter of the first sound pressure hole (110). The method according to claim 3 or 5,
Wherein the second sound pressure hole (610) is in the form of a cylinder or truncated cone. The method according to claim 3 or 5,
Wherein the first sound pressure hole (110) is in the form of a cylinder or a truncated cone. The method according to claim 3 or 5,
Wherein the diaphragm (400) comprises a planar diaphragm or an arched diaphragm. The method according to claim 3 or 5,
The diaphragm 400 has a plurality of holes 410 spaced apart from one another,
Wherein the hole is formed at a position corresponding to a spacing between points (Y) where a current flows on the linear parallelepiped thin film circuit (300).

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