KR100806219B1 - Slimmed speaker using a rectimgular voice coil - Google Patents

Abstract

The present invention relates to a speaker, and in particular, to implement a slim while implementing a slim, and relates to a structure of a speaker for realizing high sound quality by reducing distortion.

The current structure of the speaker is that when the current of the power amplifier flows through the voice coil wound around the voice coil former of the speaker unit, the current flowing at the same frequency as the audio signal expands and contracts around the voice coil. Since the work is caught in the magnetic field generated by the magnet in the unit, the diaphragm is moved back and forth by interacting with the magnetic field generated by the voice coil in response to the magnetic field, and the voice coil wound around the voice coil is connected to the diaphragm of the unit. As it vibrates, sound is generated by the vibration of the air.

However, if this vibration is not stable, most of the diaphragms are circular and the voice coiler with the voice coil wound in the center can cause large break-up and distortion. By connecting with the spider it is possible to obtain a stable width of the vibration.

In this case, the edge of the diaphragm is lifted by the vibration of the diaphragm to be coupled with the frame of the speaker while being wrapped with a gasket, and the speaker unit of this structure is mounted on an enclosure or the like using a baffle.

Therefore, the movement speed of the diaphragm back and forth, that is, the low and high sound is generated as the vibration is fast and slow, and when the reverse resonance occurs due to the different bending and transmission speed of the diaphragm, the distortion (distortion) phenomenon is generated. In addition, as the width of the vibration increases, the loudness of the sound also increases.

However, due to the tendency of the speaker to be narrowed in an upright state or in a horizontal state in recent years, the vibration width is rapidly changed as the direct movement of the diaphragm decreases, making it difficult to generate low bass sounds and to produce long and short sound. Due to the uneven transmission and the bending, the distortion (distortion) is severe, which makes it difficult to achieve high sound quality.

Therefore, the present invention is to enable a low sound stably even in a state where the diameter of the diaphragm is small, and to achieve high sound quality by improving the distortion.

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Description

Slim speaker using a rectangular voice coil {Slimmed speaker using a rectimgular voice coil}

1 is a speaker unit showing the shape of a cone of a conventional circular type

2 to 2a, b is a structural diagram of a conventional speaker unit

3 is a conventional slim type speaker unit

4 is a conventional improved slim speaker unit

5 is a speaker unit showing an embodiment of the present invention.

Figure 5a is an assembly view showing the overall assembly configuration of the present invention.

6 is an external perspective view of the voice coil former;

7 is an external perspective view of another embodiment of a voice coil former;

<Description of main parts of drawing>

10: Boys coilformer 11: Spider

10a: reinforcement 10b: reinforcement wall

20: voice coil 21: terminal

30: magnet 31: lower plate

32: Paul 32a: incision

33: upper plate 34: speaker frame

40: Gap 50: Diaphragm

60: edge surround

The present invention relates to a speaker, and in particular, the overall appearance is long in either side of the structure of the Oval / Track type (Oval / Track type) to achieve a high quality sound with excellent bass characteristics and improved distortion, while implementing will be.

The structure of the current dynamic driver (aka speaker unit) flows when the current of the power amplifier flows through the voice coil 20 wound around the voice coil former 10 of the speaker unit as shown in FIGS. 2 and 2A and 2B. If a current generates a magnetic field that expands and contracts at the same frequency as the audio signal around the voice coil, the voice coil is in a magnetic field hung in the gap 40 between the permanent magnets 30 in the speaker unit. The amplifier current flowing through the coil generates a magnetic force induced in the axial direction of the voice coil, and the magnetic force interacts in response to the magnetic field of the permanent magnet, and the voice coil former wound with the voice coil moves back and forth. Of the diaphragm 50 is connected to the voice coil or voice coil former These vibrations vibrate the move will be Bendigo as thereby generate a sound as the resistance to these vibrations because the air is pushing me to the air fluid.

The diaphragm of this structure is wrapped with a gasket to prevent the edge 60 from being lifted by vibration, and in this state, the gasket 70 is coupled with the frame 34 of the speaker and the speaker unit of this structure The baffle (90) is used to mount the enclosure.

Therefore, the moving speed of the diaphragm back and forth, that is, the high and low sound is generated as the vibration is fast and slow, and if the bending occurs during the back and forth movement of the diaphragm, the sound transmission of the long axis and the short axis is not constant due to the difference in the distance of the diaphragm. Distortion occurs due to resonance, bending, and curling, and the larger the amplitude of the vibration, the louder the sound and the better the bass.

Therefore, in order to keep the front and rear movement of the diaphragm stably, as shown in FIG. 1, most diaphragms are formed in the shape of a cone, and a voice coil former wound with a voice coil is connected to the center of the vibration width. You can get stable.

However, as the trend of the recent speaker has been changed to slim, especially as wide TV has become widespread, the overall structure leads to slimming of the speaker as shown in Figs. 3 and 4 due to the tendency of narrowing of the speaker width due to slimming. At the same time, as the direct movement of the cone / vibration plate becomes smaller, a disadvantage arises in that it is impossible to generate low sound due to the decrease in the amount of air to be pushed out.
As shown in FIGS. 3 and 4, the cone / vibration plate has a shape that is shallow in depth, narrow in width, and long in order to achieve such slimness, thereby reducing the volume of the entire diaphragm and increasing the vibration speed to the long axis. Due to the weakening of the force transmission, there is a limit in the reproduction of the bass due to the decrease of the overall vibration width, that is, the amount of air pushed out. In addition, as the reverse resonance and bending phenomenon occurs in the long axis region, the overall distortion becomes severe, making it difficult to faithfully reproduce high quality sound.

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Therefore, the present invention is slim and free from distortion, and easy to generate low sounds. For this purpose, a voice coil former having almost the same shape is used in one diaphragm having a long shape in one direction. It prevents warping during movement and minimizes distortion by minimizing reverse resonance, and also enables the generation of bass sound by allowing the amplitude of the diaphragm to be large or small.

In addition, when the voice coil former is used, the voice coil former is prevented from degrading to the inside due to the heat generated from the voice coil wound around the voice coil former to have stable output characteristics.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, in the case of the same technical idea as the conventional configuration, the same reference numerals are used.

First of all, the basic structure of the present invention is that the overall structure of one diaphragm (including the cone type) takes a long shape in one direction, and the voice coil former driving the diaphragm also takes one long form.

As a structure for this purpose, as shown in FIGS. 5 and 5A, a rectangular speaker plate 34 having a rectangular shape and a rectangular lower plate 31 having a rectangular pawl 32 embedded in the frame 34 are formed. A rectangular magnet 30 is inserted into the rectangular pole 32 so as to be seated on the flange 31a of the rectangular lower plate 31 and on the upper portion of the rectangular magnet 30. A rectangular voice inserted into a portion having a clearance 40 while being inserted into the rectangular upper plate 33 and the rectangular pole 32 that are inserted to have a constant clearance 40 between the rectangular poles 32 while being positioned. The coil coil 10 and the voice coil 20 wound around the rectangular voice coil former 10 and both terminals 20a of the voice coil 20 are connected to an output terminal of the amplifier, and the rectangular voice coil former is formed. (10) The outside border is attached to the case When the fitted rectangular spider 11 is fitted, the voice coil 20 is fixed and connected to the upper end of the wound, so that when the voice coil former 10 is moved to Shanghai, it guides the movement up and down accurately. The diaphragm 50 is connected to guide the vertical movement of the diaphragm.

At this time, the rectangular spider 11 functions as a damper that prevents the rectangular diaphragm 50 from ringing unnecessarily as well as the cracking of the Shanghai copper.

In addition, as shown in FIG. 6, the upper edge of the rectangular voice coil former 10 is connected to a plurality of reinforcement ribs 10a in a direction orthogonal to the direction of the rectangular shape so as to be connected to the lower end of the voice coil former 10. Since the voice coil former 10 has a rectangular shape due to heat generated while current flows in the voice coil 20 to be wound, the phenomenon that the coil coil 20 is inclined to the inside can be prevented.
In addition, the connection of the reinforcement (10a) has the advantage that the deformation of the form of the pole 32 is not necessary when the voice coil former 10 is operated up and down in the state that is inserted into the pole 32 and such reinforcement 10a is to prevent the inside of the coil 20 wound around the voice coil former 10 due to heat due to a lot of resistance caused by the length of the coil 20 is increased.

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In addition, as shown in Figure 7 by forming the reinforcement wall 110b to extend downward in the voice coil former 10, it is possible to be more robust reinforcement, and in this case, the pole 32 to which the voice coil former is fitted The cutout 32a is formed so that the wall 10b can be fitted.

Therefore, even when the rectangular diaphragm 50 is moved back and forth, the voice coil former 10 is formed in a rectangular shape so as to be moved back and forth, so that even when the diaphragm 50 is elongated to one side, the left and right end portions are not bent. It is possible to prevent the distortion of the sound and this overall movement has the advantage of excellent output characteristics of the bass.

In addition, by varying the shape of the edge surround in the form of down-roll and up-roll in such a structure, it is possible to smoothly control the vibration speed as well as to have the desired vibration width.

Therefore, when the current flows through the voice coil 20 by the amplifier output, since the magnetic force generated around the voice coil 20 is in the magnetic field of the magnet 30, the rectangular voice coil former 10 interacts. As the piston moves up and down, the rectangular diaphragm 50 is moved back and forth, and this forward and backward movement occurs simultaneously in one rectangular diaphragm 50, so even in a long form, the rectangular diaphragm 50 is not bent at the same time. It will be able to move back and forth, and as the rectangular diaphragm 50 moves simultaneously, the overall area that is vibrated is increased, so that the vibration speed of the rectangular diaphragm 50 can be operated slowly, and a large output can be obtained. That is, it becomes easy to generate the bass sound.

In addition, even when the thickness and the number of windings of the voice coil 20 wound around the rectangular voice coil former 10 are increased to improve the output, the increase in the number of windings is a result of increasing the resistance in the voice coil. In the case where the rectangular voice coil former 10 is moved inward by the heat generated by the subsequent heat, the voice coil former 10 hits the magnet 30 and the pole 32 to generate noise. Therefore, this omurad is to be supplemented by the reinforcing bar 10a and the reinforcing wall 10b. In particular, when the reinforcing wall 10b is used, the voice coil former 10 is fitted to the pole 32. In order to form a cutout 32a in the pole 32, the cutout must be cut to a width such that there is no interference in the state where the voice coil former is tilted.

Therefore, the rectangular diaphragm is moved forward and backward by the rectangular voice coil former, so that even though the rectangular diaphragm does not cause any bending of the diaphragm, the width of the front and rear vibrations can be increased, and the front and rear vibrations can be maintained quickly and slowly. It is possible to generate the output characteristics of, and at the same time to maintain the vibration of the diaphragm stably, as well as the bending of the oblong diaphragm without the phenomenon, the large capacity output is also possible.

Claims (4)

delete In a typical speaker unit, a diaphragm constituting the unit and a voice coil former for moving back and forth between the diaphragm and an upper plate having a spider mounted on the voice coil former and a magnetic field into which the voice coil former is fitted, and a lower plate having magnets and poles. Ultra-thin slim speaker using a rectangular voice coil characterized in that the reinforcement is formed only orthogonally to the upper edge of the voice coiler of the ultra-thin slim speaker using a rectangular voice coil made of all rectangular. delete delete

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