KR200304376Y1 - a vibration speaker eguipped with double voice coil - Google Patents

Abstract

The present invention relates to a vibrating speaker, and more particularly, a vibrating body in which a cylindrical U-yoke, a donut-shaped magnet, and a yoke plate are stacked is installed inside the cylindrical housing by a leaf spring, and the first voice is disposed on the bottom thereof. In the conventional vibrating speaker having a top plate provided with a coil, the center pole 65 of a predetermined height is placed in the inner center of the U-yoke 66, and the magnet 64 and the yoke plate attached thereto The vibrating body 6 is formed by forming the through hole 63 in the center of the 62 and fitting the magnet 64 and the yoke plate 62 to the center pole 65 of the U-yoke 66. On the other hand, the second voice coil 44 which is inserted between the inner circumference of the through hole 63 of the yoke plate 62 and the outer circumference of the center pole 65 is provided in the center of the bottom surface of the upper plate 4 by The first voice coil and the second voice By virtue of magnetic induction of the coil, the vibration control of the vibrating body is more accurate, so that the fine vibration remaining after the resonance point in the low or high frequency can be filtered out to reproduce the sound more accurately.

Description

Vibration speaker with a double voice coil {a vibration speaker eguipped with double voice coil}

The present invention relates to a vibrating speaker, and more specifically, a double voice coil is installed to remove fine residual vibrations generated in low or high frequencies by installing a plurality of voice coils inside a vibrating speaker known as a conventional haptic speaker. It relates to a vibration speaker provided.

In general, speakers are widely used for converting electrical signals into audible signals and outputting them in music, games, entertainment, and loudspeakers.

Recently, a vibrating speaker is provided to give a three-dimensional effect in music or video viewing, games, and entertainment for dancing.

The vibrating speaker may also be referred to as a bodily loudspeaker, and the body sense speaker is a sound rate output from the acoustical device if the acoustic sensation method by the audio device is simply dependent on the main auditory effect of hearing and feeling by the ear. It was developed to feel the strength and weakness of the body directly through the sound pressure, as well as to enjoy the musical listening effect by hearing.

In other words, the sound rate output from the sound equipment is amplified through the control box, the mid and low bodily sensation spigger vibrates the whole body strongly and weakly according to the sound rate, and the sound rate is transmitted to enable the three-dimensional music listening effect. In particular, the high and mid-range sound can be felt through the ear while feeling the vibration of the strong bass with the performance equivalent to that of the opposite speaker 100 ~ 200W.

5 illustrates an embodiment of the conventional vibrating speaker, and is configured to generate sound or cause vibration by applying a high frequency current to the voice coil 42 ".

That is, the conventional vibrating speaker has a housing 9 "having a predetermined size space therein while forming an outer body, and a vibrating body 6" is provided at the center of the inner space of the housing 9 ". .

At this time, the vibrating body 6 "is formed by sequentially stacking a cylindrical U- yoke 66", a magnet 64 ", and a yoke plate 62" having an open top, and the U-yoke ( A pair of leaf springs 82 " and 83 " that are elastically fixed to the inner circumferential surface of the housing 9 "

At this time, the upper leaf spring (82 ") of the pair of leaf spring (82", 83 ") of the outer circumference is fixed to the upper inner peripheral surface of the housing 9", the outer circumference of the lower leaf spring (83 ") The bottom side is bonded and fixed to the adhesive in the state where the upper end surface is in contact with the stepped portion formed on the lower inner peripheral surface of the silver housing 9 ".

On the other hand, a magnet 64 "is attached to the inside of the center of the U-yoke 66", and a conductive yoke plate 62 "is attached to the upper surface of the magnet 64".

In addition, the upper plate 4 "is provided with an EVA gasket 2" attached to the upper surface and a through hole 44 "formed at the center of the housing 9" to generate sound. At the bottom of 4 "), a voice coil 42" is formed which is inserted between the outer periphery of the magnet 64 "and the inner periphery of the U-yoke 66".

In addition, in order to increase the amount of vibration of the vibration speaker having such a configuration, the U-yoke 66 '' is made of a mass having a weight.

In the conventional vibrating speaker having the above configuration, when the high frequency signal is input to the voice coil 42 ", the EVA gasket 2" is prevented by the electromagnetic force between the voice coil 42 "and the magnet 64". Since the vibration is finely generated to produce sound, it can be used as a speaker sound.

In addition, as the electromagnetic force generated by the magnetic induction between the voice coil 42 "and the magnet 64" is generated, the vibrating body moves up and down according to the Fleming's left hand law, and the up and down movement causes the leaf spring to It is to be transmitted to the housing 9 "to perform the vibration function.

That is, the conventional vibrating speaker is excited at a constant frequency using the resonant frequency of the vibrating body, thereby moving the vibrating body composed of the yoke plate 62 ", the magnet 64, and the U-yoke 66 in the up and down directions. To generate vibration.

However, such a conventional vibrating speaker is a low frequency (20 ~ 200 Hz) or a high frequency (2 ~ 10 Hz), as shown in Figure 6 because the fine vibration is continuously remaining after the resonance point is a problem that the sound is not reproduced accurate sound Occurred.

The present invention is to solve the problems of the prior art, the center speaker is equipped with a center core to reproduce the sound more accurately by filtering out the fine vibration remaining after the resonance point in the low or high frequencies The purpose is to provide.

Another object of the present invention is to enhance the damping function in the leaf spring supporting the vibrating body to reduce the change in the amount of vibration in accordance with the change in frequency to output a stable vibration characteristics.

1 is an exploded perspective view of a vibration speaker provided with a double voice coil according to the present invention

2 is a cross-sectional view of an embodiment of a vibration speaker provided with a double voice coil according to the present invention

3A is a perspective view showing a modified embodiment of the leaf spring in FIG.

3B is a cross-sectional view of another embodiment of the vibration speaker to which the leaf spring of FIG. 3A is applied.

4 is a graph showing the vibration characteristics of the vibration speaker according to the present invention

5 is a cross-sectional view of a conventional vibrating speaker

6 is a graph showing the vibration characteristics of a conventional vibration speaker

Explanation of symbols on the main parts of the drawings

2: EVA gasket 4: Top plate

5: center core 6: vibrating body

9 housing 42 first voice coil

44: second voice coil 62: yoke plate

63: through 64; Magnet

65: Center Pole 66: U-York

82: upper leaf spring 83: lower leaf spring

820: concave groove 830: convex portion

In order to achieve the above object, the present invention provides a vibrating body in which cylindrical U-yokes, donut-shaped magnets, and yoke plates are stacked, and is mounted inside the cylindrical housing by a leaf spring, and a first voice coil is provided on the bottom thereof. In the normal vibrating speaker formed by fastening the top plate

The vibrating body is formed of a magnet and a yoke plate having a hole formed in the center thereof are fitted to be sequentially stacked inside the U-yoke having a center pole in the center thereof.

The second voice coil adjacent to the inner circumference of the through hole of the yoke plate is installed at the center of the bottom surface of the upper plate, and the first voice coil is adjacent to the outer circumferential surface of the magnet, and the second voice coil is disposed on the inner circumferential surface of the magnet. It is characterized by adjoining.

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

1 is an exploded perspective view of a vibration speaker having a double voice coil according to the present invention, Figure 2 is a cross-sectional view of an embodiment of a vibration speaker provided with a double voice coil according to the present invention, Figure 3a is a leaf spring in Figure 1 3B is a cross-sectional view of another embodiment of the vibration speaker to which the leaf spring of FIG. 3A is applied, and FIG. 4 is a graph showing vibration characteristics of the vibration speaker according to the present invention.

First, the present invention has a cylindrical housing (9) having an upper portion and a space portion (92) therein so that the upper plate (4) with the EVA gasket (2) for sound generation on the upper surface is installed;

The U-yoke 66 is provided at the inner center of the housing 9 and is fixed to the inner circumferential surface of the housing by upper and lower leaf springs 82 and 83 spaced at a predetermined interval, and the U-yoke 66. A vibrating body 6 composed of a magnet 64 attached to the upper and lower portions of the upper and lower poles of the upper and lower poles to form a magnetic circuit and fixed by the yoke plate 62;

And a voice coil 42 installed on a bottom surface of the upper plate 4 installed at an upper end of the housing 9 and inserted between the yoke plate 62 and the U-yoke 66. The structure of the vibration speaker of the basic configuration.

In the above-described basic construction, the present invention installs a center pole 65 of a predetermined height in the inner center of the U-yoke 66, and the through hole in the center of the magnet 64 and the yoke plate 62 attached thereto. 63 to form the vibrating body 6 by fitting the magnet 64 and the yoke plate 62 to the center pole 65 of the U-yoke 66, while the upper plate 4 A second voice coil 44 inserted between the inner circumferential edge of the through hole 63 of the yoke plate 62 and the outer circumferential edge of the center pole 65 is installed at the bottom center.

That is, the vibrating body 6 includes a cylindrical U-yoke 66 having a center pole 65 of a predetermined height in an inner central portion thereof, and having an open upper portion;

A donut-shaped magnet 64 and a yoke plate 62 having a through hole 63 of a predetermined diameter in a central portion thereof; The magnet 64 and the yoke plate 62 are sequentially stacked inside the U-yoke 66 so that the through-hole 63 is fitted into the center pole 65.

In addition, the second voice coil 44 is inserted between the inner circumference of the through hole 63 of the yoke plate 62 and the gap of the center pole 65, and the first voice coil 42. The coil was wound in multiple layers to form a smaller size, so that the first voice coil 42 and the magnetic field have the same Gauss.

Looking at the operation of the present invention configured as described above are as follows.

When current flows in the first voice coil 42 and the second voice coil 44, a current of magnetic induction flows between the yoke plate 62, the magnet 64, and the U-yoke 66, and the left hand rule of Fleming As a result, the vibrating body 6 vibrates up and down.

At this time, the vibrating body 6 is vibrated by the second voice coil 44 adjacent to the inner circumference in parallel with the first voice coil 42 adjacent to the outer circumference of the yoke plate 62, so that more precise control of vibration is achieved. This is possible, and thus, the residual vibration remaining after the vibration can be effectively filtered out.

That is, as shown in FIG. 4, after the vibrating body 6 vibrates in a low frequency band or a high frequency band, the residual vibration is cut by the magnetic induction of the second voice coil 44 after the fine vibration remaining after the resonance point ( By cutting, unnecessary waves can be removed to reproduce the correct sound.

Therefore, the vibration of the vibrating body 6 is stopped by causing the vibration of the vibrating body 6 to be generated separately by the second voice coil 44 on the inner side. By allowing effective control in a shorter time, the residual vibration after the resonance point can be filtered out to reproduce clearer and brighter sound.

Meanwhile, FIGS. 3A and 3B show another embodiment of the upper and lower leaf springs 82 and 83 in the present invention, and the inner circumference of the vibrating body 6 composed of the U-yoke, the magnet, and the yoke plate. In contact with the peripheral edge, the outer peripheral edge is attached to contact the inner peripheral edge of the housing (9) to improve the structure of the plurality of upper and lower leaf springs installed on the upper and lower portions to hold the vibrating body (6).

That is, the upper leaf spring 82 ′ forms a circular concave groove 820 ′ recessed downward, and the lower leaf spring 83 ′ forms a circular convex portion 830 ′ protruding upward. The elasticity can be increased so that the vibration of the vibrating body 6 can be more absorbed.

Therefore, by removing the repulsive force that interferes with the vibration waveform generated when the vibrating body 6 is vibrated, by increasing the vibration force it is possible to maintain the original vibration waveform to enable more accurate sound reproduction.

Hereinafter, reference numeral 50 denotes a guide ring 50 for supporting the upper and lower leaf springs 82 and 83.

As described above, in the vibrating speaker provided with the double voice coil according to the present invention, a vibrating body composed of a U-yoke, a magnet, and a yoke plate is installed in the housing by a leaf spring, and the first voice coil and By combining the upper plate with two voice coils from the top of the housing, the vibration control of the vibrating body is more accurate by the magnetic induction of the first voice coil and the second voice coil, so that after the resonance point in the low or high band The remaining fine vibration can be filtered out to provide a useful effect that allows the sound to be reproduced more accurately.

Claims (3)

A cylindrical housing having an upper portion and a space portion formed therein so that an upper plate having an EVA gasket for sound generation is installed on an upper surface thereof; A cylindrical U- yoke is provided at the inner center of the housing and is fixed to the inner circumferential surface of the housing by upper and lower leaf springs spaced at regular intervals, and the N and S poles are polarized up and down at the upper end of the U-yoke. A vibrating body attached to constitute a magnetic circuit and composed of a magnet fixed by a yoke plate; In the structure of a conventional vibration speaker comprising a; voice coil is installed on the bottom of the upper plate attached to the upper end of the housing adjacent to the yoke plate and the U- yoke, The vibrating body 6 is composed of a U-yoke 66, a magnet 64, and a yoke plate 62. The U-yoke 66 has a center pole 65 having a predetermined height in an inner center thereof. The magnet 64 and the yoke plate 62 have a through hole 63 corresponding to the center pole 65 at a central portion thereof, and the magnet 64 and the yoke plate 62 have the U-yoke 66. ) Is made by sequentially stacking inside of, The voice coil is composed of a first voice coil 42 and a second voice coil 44, The first voice coil 42 is inserted between the inner circumference of the U-yoke 66 and the outer circumference of the yoke plate 62, and the second voice coil 44 is a hole 63 of the yoke plate 62. Vibration speaker with a double voice coil, characterized in that the insertion is installed between the inner circumference of the outer periphery and the outer circumference of the center pole (65). The method of claim 1, wherein the second voice coil 44 is formed to be smaller than the first voice coil 42, but the same as the strength of the magnetic field of the first voice coil 42 by winding multiple coils Vibration speaker with dual voice coil characterized in. The upper leaf spring 82 'is formed with a circular concave groove 820' recessed downwardly, and the lower leaf spring 83 'has a circular convex portion protruding upward. 830 ') is formed, vibrating speaker provided with a double voice coil.