KR200304375Y1 - a vibration speaker eguipped with center core - Google Patents

Abstract

The present invention relates to a vibrating speaker having a center core to suppress fine vibrations generated from a vibrating speaker known as a conventional haptic speaker. More specifically, a cylindrical U-yoke, a donut-shaped magnet, and a yoke plate are provided. In a conventional vibrating speaker in which stacked vibrating bodies are coalesced in a cylindrical housing by a leaf spring, a central portion of the U-yoke 66, the magnet 64, the yoke plate 62, and the upper plate 4 is fixed. A hole 44 having a diameter is formed, and a center core 5 having a coil wound around an outer circumference thereof has the U-yoke 66, the magnet 64, the yoke plate 62, and the upper plate 4. The lower end is screwed to the inner bottom surface of the housing 9 while vertically penetrating through the through hole 44, and is made up.

Therefore, the fine vibration remaining after the resonance point during the vibration can be filtered out to reproduce the sound more accurately.

Description

Vibration speaker with center core {a vibration speaker eguipped with center core}

The present invention relates to a vibrating speaker, and more particularly to a vibrating speaker provided with a center core to suppress the minute vibration generated in the low or high frequency of the vibrating speaker known as a conventional haptic speaker.

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 sound pressure, as well as to enjoy the musical appreciation 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, to provide a vibration speaker equipped with a center core to reproduce the sound more accurately by filtering out and removing the fine vibration remaining after the resonance point in the low or high frequencies The purpose is.

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 center core according to the present invention

Figure 2 is a cross-sectional view of an embodiment of a vibration speaker having a center core 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 voice coil

44: through hole 52: insulation packing

62: yoke plate 64; Magnet

66: U-yoke 82: Upper leaf spring

83: lower leaf spring 820: concave groove

830 convex

In order to achieve the above object, the present invention is a vibrating body in which a cylindrical U-yoke, a donut-shaped magnet, and a yoke plate are stacked in a cylindrical vibrating body installed inside a cylindrical housing by a leaf spring. The center core of a predetermined length wound is vertically penetrating the center of the U- yoke, the magnet, the yoke plate and the upper plate while the lower end is screwed into the inner bottom of the housing.

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 with a center core according to the present invention, Figure 2 is a cross-sectional view of an embodiment of a vibration speaker with a center core according to the present invention, Figure 3a is a leaf spring of 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.

The present invention in the above-described basic configuration is characterized in that the center core is installed vertically inside the housing.

Meanwhile, the center core 5 of the U-yoke 66, the magnet 64, the yoke plate 62, and the upper plate 4 may be slightly larger than the diameter of the center core 5 so that the center core 5 may be penetrated therethrough. A through hole 44 having a large diameter is formed.

The center core 5 is a rod-shaped conductor having a predetermined length in which a screw 54 is fastened to a lower end thereof and wound a coil on an outer circumferential surface thereof, and the U-yoke 66, the magnet 64, and the yoke plate ( 62) and penetrated through the through hole 44 formed in the center of the upper plate 4, the lower end is screwed to the bottom of the housing 9, the upper end is fitted into the through hole 44 of the upper plate 4 The outer periphery of the insulating packing 52 is covered to be fixed in the through hole (44).

When the current flows through the coil of the center core 5, the current flows between the yoke plate 62, the magnet 64, and the U-yoke 66, and the vibrating body 6 moves up and down by the left-hand rule of Fleming. It will vibrate.

At this time, it is preferable that the center core 5 and the voice coil 42 maintain the strength of the magnetic field at the same Gauss so that the vibrator 6 uniformly vibrates when current flows.

Therefore, the vibrating body 6 can be more accurately controlled by the electromagnetic force of the voice coil 42 and the center core 5, that is, the vibration can be removed by filtering the residual vibration (filtering).

That is, as shown in FIG. 4, the vibration body 6 vibrates in a low frequency band or a high frequency band and thus unnecessary vibration by cutting fine vibrations remaining after the resonance point by magnetic induction of the center core 5. You can play back the correct sound by removing.

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

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.

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

When a current is applied to the voice coil 42, a current flows between the magnet 64 of the vibrating body 6, the yoke plate 62, and the U-yoke 66, and simultaneously the vibrating body according to Fleming's left hand law. Vibration is generated while (6) moves up and down.

In addition, when a current is applied to the coil of the center core 5, the current flows between the magnet 64, the yoke plate 62, and the U-yoke 66, and the vibrating body 6 also in accordance with Fleming's left hand law. ) Will vibrate up and down.

Therefore, by vibrating the vibration of the vibrating body 6 with only one voice coil 42, another vibration effect is generated by the inner center core 5 in parallel, thereby making the vibration and the vibration of the vibrating body 6 more stable. By effectively controlling in a short time, the residual vibration after the resonance point can be filtered out to reproduce clearer and brighter sound.

In addition, when installing the leaf springs (82, 83) formed with the concave groove (820 ') and the convex portion (830') to prevent the unnecessary vibration and to make the vibration of the vibrating body (6) more accurate sound That is, it can reproduce the correct sound.

As described above, the vibration speaker equipped with a center core according to the present invention is a vibration speaker composed of a U- yoke, a magnet, and a yoke plate in the housing of a conventional vibration speaker installed by a leaf spring. The center core of the coil is wound at the center of the vibrating body, and the fine vibration remaining after the resonance point in the low or high frequency can be filtered out to provide a useful effect of reproducing the sound more accurately. do.

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 vibrating speaker comprising a; voice coil is installed on the bottom surface of the upper plate installed on the upper end of the housing and inserted between the yoke plate and the U- yoke, A through hole 44 having a predetermined diameter is formed at the center of the U-yoke 66, the magnet 64, the yoke plate 62, and the upper plate 4. The center core 5 of which a coil is wound around the outer circumference vertically penetrates the U-yoke 66, the magnet 64, the yoke plate 62, and the through hole 44 of the upper plate 4. The lower end of the vibrating speaker with a center core, characterized in that the lower end is screwed into the inner bottom surface of the housing (9). The center core of claim 1, wherein the center core is fitted into the through hole 44 of the upper plate 4 with the insulating packing 52 provided on the outer periphery of the upper end of the center core 5. Equipped vibration speaker. 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, the vibration speaker with a center core, characterized in that is formed.