KR20100005398A

KR20100005398A - Direct radiate-type undirectional full-range speaker system

Info

Publication number: KR20100005398A
Application number: KR1020080065417A
Authority: KR
Inventors: 허진
Original assignee: 허진
Priority date: 2008-07-07
Filing date: 2008-07-07
Publication date: 2010-01-15

Abstract

PURPOSE: A direct radiation type unidirectional full-range speaker system is provided to uniformize sound pressure distribution regardless of a position by enlarging and widening a wavelength of a sound. CONSTITUTION: A magnet is installed in a base(100). A sound generator is vertically inserted into the center of the magnet. An induction unit is positioned in a lower side of the sound generator. A penetration hole is formed in the center of the damper. The damper is positioned in the lower side of the base. A diaphragm(150) is positioned in the lower side of the damper. The induction unit passes through the upper side of the diaphragm. A doughnut edge(160) is fixed in a lower edge of the diaphragm. A frame(170) is connected to the base through a connection rod(180). The frame is fixed in an outer boarder of the edge. A sound signal input unit supplies the sound current to the sound source generator.

Description

Direct radiate-type undirectional full-range speaker system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to omnidirectional speaker systems, and more particularly, to a direct radiation omnidirectional full-range speaker system that reproduces full-band sound and has an acoustic radiation function in all directions (360 °).

In general, in order to listen to a sound source, a sound source output device such as CDP or MP3 is used. The digital information obtained from these devices detects the signal from the rays reflected by the laser that is emitted by the optical pickup device in the CDP. The signal detected in the pickup is amplified to become noise and is a combination of 0 and 1 digital signals. After the change, the error is corrected and converted into a voice signal by a device such as a DA converter and transmitted to an amplifier, so that the sound is reproduced by a user.

In this case, a speaker is used as a device for finally reproducing sound (music). That is, the voice coil supplied with electricity from the amplifier is a coil wound, so it becomes a circuit inductor, and copper (Cu) or aluminum (Al) constituting the coil has a specific resistance of the material, so the resistance is connected in series with the coil. Becomes Since a force is generated in proportion to the current flowing through the coil, the current and the force are converted into a mechanical physical quantity through a transformer, and this force becomes the mother moving the diaphragm. This force moves the mass of the diaphragm and the voice coil, and the damper and the edge are connected to and vibrate to form a resonator composed of mass and elasticity.

The vibration of the vibrating body configured as described above emits sound into the air. Since the air is a fluid, the vibrating body resists vibration and acts as an impedance component having different resistance and reactance components according to frequency. The diaphragm of the speaker meets the air fluid both in the front and rear directions, and thus can be replaced with the impedance (or reciprocal admittance) corresponding to each of the front and rear as shown in the figure.

On the other hand, when the speaker is mounted in the enclosure, the rear impedance is replaced by the elasticity of the air corresponding to the volume of the enclosure.When the horn is attached to the front, the impedance of the horn becomes the front impedance, so that the equivalent circuit of the speaker is the speaker system. It depends on the form of the.

Such speakers have evolved over many years in many structures and ways. However, the conventional speakers have directivity characteristics, and one speaker cannot obtain the position, and the two speakers can obtain the position in such a way that the original sound source exists outside the position of the sound source.

Therefore, in the conventional speaker system as shown in FIG. 1, the conventional speaker 20 composed of a magnetic circuit part, a vibration plate and a frame is constantly coupled to one side of the speaker box 10 in one direction at all times. In order to obtain a wide direction angle, a plurality of speakers having different directions must be installed, which causes a number of problems such as an increase in installation space and a significant increase in production cost.

In order to solve these problems, a method of pursuing omnidirectionalness has been devised by providing a predetermined reflecting plate on the top of the speaker unit, but it has to be 360 ° in practical sense because it has no choice but to provide omni-directional area limited by the reflecting angle of the reflecting plate. Because omnidirectional cannot be realized, omnidirectional speakers so far known do not emit full-directional omnidirectional sound.

An object of the present invention is to provide a direct radiation type omni-directional full-range speaker system that does not need to install a plurality of speakers for omnidirectional radiation by installing a speaker that can be radiated in all directions as solved to solve this problem.

The present invention for achieving this object is a space formed therein, the base, the magnet is installed, the sound source generating member inserted perpendicular to the center of the magnet, the induction member located below the sound source generating member, the induction member The through hole is formed in the center to penetrate through, the damper is located on the lower surface of the base, the vibration plate is formed in the hollow form of the upper and lower light through the induction member is inserted through the upper end at the bottom of the damper, and the vibration plate It is fixed to the lower edge of the, including a frame which is connected to the edge and the base formed in a donut shape and connected to the base at the same time fixed to the outer edge of the edge, the upper end of the diaphragm is fixed with the bottom of the sound source generating member Direct radiation type plain, characterized in that coupled and provided with a voice signal input for supplying a voice current to the sound source generating member It provides a castle full-range speaker system.

As described above, the direct radiation type omni-directional full-range speaker system according to the present invention has the following effects.

First, using the material of the speaker vibration plate as a hanji has the effect of dramatically improving the sense of positioning, presence and sound quality required in the speaker.

Secondly, since the omnidirectional speaker has a large wavelength of sound and is widely formed, it is naturally heard and radiated at 360 ° so that the sound pressure distribution is uniformly formed at any position.

Third, direct sound is heard at any location in the room, and it delivers rich and realistic sound due to reflection and balance.

Fourth, one point sound that is sounded like the principle of sound is distributed and radiated at 360 °, so three-dimensional music can be heard, and it is not tired even if it is long.

Fifth, the size of the sound is remarkably small because the wavelength of the reproduced sound suddenly disappears as the reproduced sound moves away from the front of the speaker. However, the omnidirectional speaker has less attenuation of the sound, so that many people have the same sound pressure. ) Is passed.

Sixth, there is no need to install a plurality of speakers for omnidirectional radiation by installing a speaker that can radiate in all directions, thereby reducing the cost.

Hereinafter, the direct radiation type omni-directional full-range speaker system according to the present invention will be described with reference to the accompanying drawings.

2 is a combined perspective view of a direct radiation directivity full-range speaker system according to an embodiment of the present invention, Figure 3 is a longitudinal cross-sectional view of a direct radiation directivity full-range speaker system according to an embodiment of the present invention, Figure 4 5 is an exploded perspective view of a direct radiation type omnidirectional full range speaker system according to an embodiment of the present invention, and FIG. 5 is a state diagram of a direct radiation type omnidirectional full range speaker system according to an embodiment of the present invention.

2 to 4, the direct radiation type omni-directional full-range speaker system 1 according to the present invention has a space formed therein, and a magnet 100 having a base 100 and a magnet 110 installed therein. The sound source generating member 120 is inserted into the center of the vertical, the induction member 140 positioned below the sound source generating member 120, and the through hole 131 is formed in the center so that the induction member 140 is penetrated. And a damper 130 positioned on a lower surface of the base 100 and a lower portion of the damper 130 and an upper end thereof penetrated by the induction member 140 and formed in a hollow form of upper and lower light beams. 150, the edge 160 is fixedly installed on the lower edge of the diaphragm 150 and is formed in a donut shape, and is connected to the base 100 by a connecting rod 180 and at the same time an outer edge of the edge 160. Including a frame 170 is fixed to the upper end of the diaphragm 150, the sound source generating member 120 The audio signal input unit 200 for the lower and fixed coupling and supplying a current to the voice sound producing member 120 is provided.

Here, the base 100 is preferably formed to form a space in the sealed interior and have a circular border, the magnet 110 may be attached to the inside concentrically. That is, as commonly used, it forms an enclosure (also called a cabinet or box) made of wood, plastic, or the like in which the unit of the speaker is assembled.

At this time, the magnet 110 is formed with a through groove 111 having a predetermined diameter on the central concentric circle. The through groove 111 is formed to have a width larger than the thickness of the sound source generating member 120 to correspond to the diameter of the sound source generating member 120 to be described later, the sound source generating member (120) when the sound source generating member ( 120 is spaced apart so as not to contact the inner and outer wall surfaces.

In addition, the bottom surface of the base 100 is formed with an annular groove (not shown) so that the outer edge of the damper 130 to be described later is seated. A plurality of bolt holes (not described) are formed on the bottom surface of the base 100 to be coupled to the frame 170 by the connecting rod 180 to be described later.

In addition, although the voice signal input unit 200 may be formed on the base 100 to amplify the voice signal and supply the current, the voice signal input unit 200 may be connected using a wire (not shown). . When the voice signal input unit 200 is located on the base 100, a wire may pass through the inside of one of the connecting rods 180 and be connected to the outside.

As such, the sound source generating member 120 that receives the electric current from the electric wire is inserted into the through groove 111 of the magnet 110. At this time, the sound source generating member 120 refers to that the voice coil 121 is wound by a predetermined number of times at a predetermined height and width, the leader line exposed to both ends of the voice coil 121 (not shown) Current is supplied to each. The lower end of the sound source generating member 120 is fixedly coupled to the end of the diaphragm 150 to be described later.

On the other hand, the damper 130 is located on the concentric circle of the base 100 and the outer periphery of the damper 130 is seated in the annular groove of the base 100. At this time, a through hole 131 through which the sound source generating member 120 penetrates is formed in the center of the damper 130, and a mountain portion (not shown) is formed of a plurality of ring-shaped concentric circles from the center to the outside. According to this configuration, the damper 130 itself by the vibration of the sound source generating member 120 adhered to the through-hole 131 in the center is a straight reciprocating movement up and down, at this time a plurality of peaks contract or expand It will act as a buffer. In addition, by being fixedly attached with the diaphragm 150 and the sound source generating member 120, it supports to maintain the vertical vibration of the sound source generating member 120, and adjusts the sound quality as the displacement amount for the force applied to the damper 130 Function.

In addition, an induction member 140 is inserted into the through hole 131 of the damper 130 and fixedly coupled to the base 100 by means such as screwing. The induction member 140 is formed in a cylindrical shape, and the lower end is formed in a dome shape suitable for a high frequency band, thereby reducing distortion due to a phase difference and improving directivity, thereby accurately responding to an electric signal. As the induction member 140, a phase plug (also referred to as an equalizer) may be installed, which increases efficiency to obtain higher sound pressure and improves high-pitched characteristics.

In addition, the diaphragm 150 which is fixed to the damper 130 and the sound source generating member 120 at the same time to surround the induction member 140 is formed. At this time, a through hole 151 having a diameter larger than that of the induction member 140 is formed at the upper end of the diaphragm 150, so that the induction member 140 is inserted through the through hole 151, and the diaphragm 150 is It is formed by the light of the lower side, an example thereof may be formed in a substantially trumpet shape, the outer peripheral surface is formed round, the cross section may be formed in the shape of any one of a circle, a polygon. That is, it may be selectively applied and designed in consideration of the output of the sound source or the listening environment. Here, the edge 160 is formed at the outer edge of the diaphragm 150. In addition, the material of the diaphragm 150 is made of any one material of Hanji pulp, aluminum, PP, carbonate.

Here, the edge 160 mentioned is formed by press-press molding after coating the cross (fiber), and since the emboss (not shown) is formed on the front surface, it is possible to improve the negative sensitivity. do. One is to flexibly respond to the movement of the vibrometer and drive system components and at the same time prevent the side shake, and the other is to maintain the position accurately, the other is the sound wave radiated forward from the diaphragm 150 and the sound wave of reverse phase radiated backward Is to prevent the mixture is canceled.

In addition, it is necessary to have a large vibration absorption capacity (internal loss) in order to prevent the sound generated at the edge 160 due to resonance to have a great adverse effect on the performance of the speaker. In addition, since the edge is coupled to the outer circumference of the diaphragm 150, it is required to be lightweight (low density) like the diaphragm 150. As the material of the edge 160, a coating fabric or a foamed polyurethane rubber is generally used. Edge 160 is fixedly bonded to the inner edge of the frame 170 to be described later.

On the other hand, the frame is vertically connected to the lower side of the base by using a coupling means such as a coupling bolt (not shown) by the connecting rod. In this case, a network (not shown) may be further formed to cover the diaphragm 150 to the frame 170 to prevent damage from the outside.

The direct radiation type omni-directional full-range speaker system 1 according to the present invention configured as described above will be described as follows.

First, when a voice current is introduced into the voice coil 121 through the voice signal input unit 200, Lorentz's force is applied in a magnetic field formed between the magnet 110 and the voice coil 121 to magnetize according to the strength of the current. The voice coil 121 is vibrated up and down by mutual reaction with the magnetic field flowing through the magnet 110. By vibrating the voice coil 121, the vibrating plate 150 and the damper 130 to which the sound source generating member 120 to which the voice coil 121 is wound are fixedly connected are vibrated, and at this time, the vibrating plate 150 and A change in sound pressure, that is, a change in pressure with air, is generated. At this time, the damper 130 controls the vibration while helping the vibration of the diaphragm 150, and also serves to prevent the left and right movement of the sound source generating member (120).

At this time, since a minute gap is formed between the induction member 140 and the diaphragm 150, a high range is raised through this, and a negative band is widened, and a low range is also generated from the upper portion of the base 100 at the same time. In addition, since the sound source is radiated in the 360 ° direction from the diaphragm 150 having an upper and lower light shape, the outer circumferential surface of which is rounded around, so as to improve the directivity characteristic and the listening range regardless of the user's position. do.

FIG. 5 shows a state diagram in which the omni-directional full-range speaker system 1 according to the present invention is placed on a shelf 2 and used as shown in the drawing. It has an appearance that adds to the decor.

The above embodiments are for explaining the present invention, and the scope of the present invention is not limited to the embodiments, and may be modified or modified by those skilled in the art within the scope of the present invention defined by the appended claims.

That is, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified.

1 is a perspective view showing a speaker system according to the prior art.

Figure 2 is a perspective view of the direct radiation type omnidirectional full-range speaker system according to an embodiment of the present invention.

Figure 3 is a longitudinal cross-sectional view of a direct radiation omni-directional full-range speaker system according to an embodiment of the present invention.

Figure 4 is an exploded perspective view of a direct radiation type omnidirectional full range speaker system according to an embodiment of the present invention.

5 is a state diagram used in the direct radiation type omni-directional full-range speaker system according to an embodiment of the present invention.

* Explanation of Signs of Major Parts of Drawings *

1: Omnidirectional full range speaker system 2: Shelf

10: conventional speaker 20: speaker box

100: base 110: magnet

111: through groove 120: sound source generating member

121: voice coil 130: damper

131: through hole 140: guide member

150: diaphragm 151: through hole

160: edge 170: frame

180: connecting rod 200: voice signal input unit

Claims

A base having a space formed therein and a magnet installed therein;

A sound source generating member inserted perpendicularly to the center of the magnet;

An induction member located below the sound source generating member;

A through hole is formed in the center so that the guide member penetrates, and a damper positioned at a lower surface of the base;

A vibration plate positioned at a lower side of the damper and inserted into the induction member at an upper end thereof and formed in a hollow shape of upper and lower light;

An edge fixed to the lower edge of the diaphragm and formed in a donut shape; And

And a frame connected to the base and fixed to the outer edge of the edge at the same time; and including an upper end of the diaphragm fixedly coupled to the lower end of the sound source generating member and supplying a voice current to the sound source generating member. Direct radiation type omni-directional full-range speaker system characterized in that the signal input unit is provided.

The method of claim 1,

And a cylindrical through groove having a predetermined width on the frame and the concentric circle, and the sound source generating member is inserted into the through groove.

The method of claim 1,

The inductive member is a direct radiation type omni-directional full-range speaker system, characterized in that the cylindrical shape and the bottom is formed in the dome (dome) shape to be suitable for the high frequency band.

The method of claim 1,

Direct radiation type omni-directional full-range speaker system, characterized in that the cross section of the diaphragm is formed in any one of a circular, polygonal shape.

The method of claim 1,

The diaphragm is a direct radiation type omni-directional full-range speaker system, characterized in that made of any one material of Hanji pulp, aluminum, PP, carbonate.

The method of claim 1,

The diaphragm is omni-directional full-range speaker system, characterized in that the outer peripheral surface is formed in the shape of a trumpet.