KR200276116Y1 - A Speaker System - Google Patents

Abstract

The present invention relates to a low cost high quality reproduction speaker system.

The present invention is a speaker system for reproducing voice according to a voice signal, the sound pressure generating device for generating a sound pressure; A first center pole yoke having a myriad of sound pressure passing holes to allow sound pressure generated from the sound pressure generator to pass therethrough; A magnet at least surrounding the first center pole yoke; A first plate surrounding the first center pole yoke and disposed between the magnet and the sound pressure generating device; A second center pole yoke having a myriad of sound pressure passing holes disposed at a predetermined distance from the first center pole yoke; A second plate surrounding the second center pole yoke and disposed adjacent to the magnet; And a wire diaphragm disposed in a predetermined space between the first center pole yoke and the second center pole yoke; The wire diaphragm is made by arranging a single conductive wire in a reciprocating cross, and attaching two adjacent wires to each other with an elastic member; The magnetic field acting on the wire and the fixed magnetic field of the magnet interact with each other by a current according to a voice signal input to the wire of the wire diaphragm, so that the wire vibrates around the elastic member.

Description

Speaker System {A Speaker System}

The present invention relates to a speaker system by controlling sound pressure, and more particularly, to a speaker system using sound pressure control by wire vibration generated by interaction of a fixed magnetic field and a wire magnetic field caused by a current flowing in a wire.

Sound is a vibration of air, that is, a small change in pressure, and the principle of a speaker is to reproduce sound by using the principle of pressure change caused by the vibration.

In general, a large number of various types of speakers have been proposed, but when classified according to shape, unlike coin-type speakers and coin-type speakers classified into a cone type, a dome type, a horn type, etc. Ribbon type speaker which is mainly used as tweeter with diaphragm is driven in front, speaker which is operated by suction and repulsion by the force of static electricity by installing two electrodes at narrow intervals, and hyplicizer speaker using piezo effect. When classified according to frequency characteristics, a woofer, a speaker unit dedicated to bass, a scoker, or a tweeter, a speaker unit for midrange and treble, can be used.

An example of the structure of a cone speaker that is typically used to understand the structure of a general speaker will be described.

1 is a cross-sectional view showing an example of a general cone speaker.

That is, in the speaker 10, a plate 14 having a center pole yoke 15 is disposed at the center of the lower side of the frame 13 on which the diaphragm 11 and the center cap 12 are formed, and the plate 14 is disposed. The outer peripheral surface of the magnet 16 is provided.

In addition, a damper 17 is provided between an inner side of the frame 13 and an inner side of the diaphragm 11, and an upper end of the voice coil 17 is connected to an inner circumferential surface of the diaphragm 11, and a lower end thereof is an inner circumferential surface of the plate 14. And the outer circumferential surface of the center pole yoke 15.

In addition, an appropriate input terminal 18 for inputting a voice signal is provided at a suitable place of the frame 13.

Therefore, when the electric voice signal is input to the input terminal 18, a current flows through the voice coil 17 so that the center pole yoke 15, the plate 14, and the magnet 16 form a magnetic circuit. Under the influence of the magnetic field formed by the magnetic circuit, the voice coil 18 vibrates up and down about the outer circumferential surface of the center pole yoke 15.

When the voice coil 18 is operated upward by the above principle, the diaphragm 11 is moved upward by the operation of the voice coil 18, and a "+" sound pressure is generated, and the voice coil 18 When operated downward, the diaphragm 11 is moved downward by the operation of the voice coil 18, and a "-" sound pressure is generated and becomes like a reproduction waveform curve shown in FIG. 2, and the frequency range is approximately 20 When it is about 20 ~ 20 耳, it can be detected by the ear as sound.

However, in the speaker of the general structure as described above, there was a problem of the first to solve the following.

That is, when the sound of the speaker is radiated to the outside by the above-described operating principle, the sound is radiated to the outside through the damper 17, the diaphragm 11, and the center cap 12. While radiating to the outside, the damper 17, the diaphragm 11 and the center cap 12 had a problem that the vibration and the resulting vibration sound.

As described above, the vibration sound generated from the damper 17, the diaphragm 11, and the center cap 12 is mixed with the reproducing sound radiated to the outside through the speaker, so that the noise is mixed when the sound is generated from the speaker. Such factors are becoming a measure of speaker quality.

In addition, as described above, the damper 17, the diaphragm 11, and the center cap 12 are caused by the vibration generated from the damper 17, the diaphragm 11, and the center cap 12, and thus the electrical signal is affected by the inertia. Transient characteristics become a factor deteriorating in the process of converting the mechanical vibration into a mechanical vibration.

In order to solve this problem, the applicant has proposed the speaker system disclosed in the publication No. 1992-2443 as shown in FIG. The system includes a cylinder 28 having three chambers to pass up and down, a vibrator 25 embedded in a hollow in the cylinder 28, and a center fixed to one side of the vibrator 25. Magnetic circuits consisting of poles and yokes 21, plates 32 and magnets 23, the left and right gates of the central outer circumferential surface 25 'of the vibrator 25, and the internal left and right sides of the cylinder 28 A high temperature tank 29 connected to the left side of the wall, the cylinder 28, a low pressure tank 29 'connected to the right side of the cylinder 28, and an horn installed integrally with the upper central opening of the cylinder 28. And a left and right gates of the vibrator 25 are displaced according to the voice signal voltage when the voice signal voltage is applied to the pair of input terminals 23 and 23 '. By opening and closing the inner wall of the control the amount of sound pressure transmitted through the inner wall surface.

However, such a system can obtain an excellent reproduction effect on sound quality compared to a conventional cone-shaped speaker, but in order to precisely control the vibrator 25 according to the voice signal voltage, not only a vibrator or the like must be precisely manufactured, but also its structural There is a limit to ultra precision control by the characteristic. As a result, such a problem increases the production cost of the speaker because there is no room for mass production of the speaker. Therefore, it becomes a factor which hinders the popularization of a high quality speaker.

Accordingly, an object of the present invention is to provide a speaker system having a new structure suitable for mass production of a speaker capable of high-quality reproduction, to solve the above problems.

1 is a cross-sectional view showing an example of a typical speaker.

Figure 2 is a waveform diagram of the operating characteristics of a conventional speaker.

3 is a cross-sectional view showing another conventional speaker structure.

Figure 4 is a cross-sectional configuration of the speaker system using the sound pressure according to the present invention.

Figure 5 is an enlarged perspective view of some excerpts in order to show the main portion of the wire diaphragm according to the present invention in detail.

6 is a cross-sectional view for showing an operating state of the wire diaphragm according to the present invention.

7 is a cross-sectional view showing another embodiment of a speaker system using a sound pressure according to the present invention.

* Description of the symbols for the main parts of the drawings *

20; sound pressure generating unit 30; magnet

40; wire diaphragm 41; border

42; operating space 43; audio signal input terminal

44; wire 45; elastic member

50; first plate 51; first center pole yoke

60: second plate 61: second center pole yoke

Technical solution of the present invention for achieving the above object is a speaker system for reproducing a voice in accordance with a voice signal, the sound pressure generating device for generating a sound pressure; A first center pole yoke having a myriad of sound pressure passing holes to allow sound pressure generated from the sound pressure generator to pass therethrough; A magnet at least surrounding the first center pole yoke; A first plate surrounding the first center pole yoke and disposed between the magnet and the sound pressure generating device; A second center pole yoke having a myriad of sound pressure passing holes disposed at a predetermined distance from the first center pole yoke; A second plate surrounding the second center pole yoke and disposed adjacent to the magnet; And a wire diaphragm disposed in a predetermined space between the first center pole yoke and the second center pole yoke; The wire diaphragm is made by arranging a single conductive wire in a reciprocating cross, and attaching two adjacent wires to each other with an elastic member; The magnetic field acting on the wire and the fixed magnetic field of the magnet interact with each other by a current according to a voice signal input to the wire of the wire diaphragm, so that the wire vibrates around the elastic member.

The first center pole yoke and the first plate are integrally formed, or the second center pole yoke and the second plate are integrally formed.

In addition, the wire diaphragm is formed in the form of fixing the end of the single conductive wire arranged in the reciprocating cross in a frame of a hollow form.

The elastic member is preferably made of at least one of raw rubber, polyester, polyethylene.

The speaker system according to the present invention is preferably divided into + sound pressure and-sound pressure, respectively, and manufactured as a separate system.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention for achieving the above object will be described in detail.

4 is a cross-sectional view showing a state in which a speaker system according to the present invention is installed.

The negative pressure generator 20 for generating the negative pressure shown in FIG. 4 includes a cylinder in the form of a tank for storing the air pressure by a high pressure or low pressure pump (not shown), and has a myriad of negative pressure passage holes in the opening of the cylinder. The first center pole yoke 51 is attached. In addition, a magnet 30, such as a permanent magnet, is arranged to at least surround the first center pole yoke 51, and a first plate made of iron (Fe) between the magnet 30 and the sound pressure generator 20. 50 is disposed to serve to transfer the flow of the magnetic field flowing in the magnet 30 to the first center pole yoke 51 side.

A second center pole yoke 61 having an infinite number of sound pressure passage holes at a predetermined distance from the first center pole yoke 51 is arranged, and surrounds the second center pole yoke 61 with the magnet 30. The second plate 60 made of iron (Fe) arranged on the () is arranged. Similarly, the second plate serves to transfer the flow of the magnetic field flowing in the magnet 30 to the second center pole yoke 61 side.

At a predetermined interval between the first center pole yoke 51 and the second center pole yoke described above, the wire diaphragm 40 manufactured according to the present invention is disposed without contact. FIG. 5 is a detailed view of the wire diaphragm, reciprocatingly arranging an uncut long single wire 44 of about 0.1 mm in a zigzag form, and forming the first two adjacent wires such as raw rubber, polyester, polyethylene, silicone, and the like. It is made by adhering with an elastic member and then adhering every other two adjacent wires with an elastic member 45. On the other hand, the two wires of the portion not bonded to the elastic member 45 are in contact with each other. The wire formed in this way is fixed to the end of the wire 44 arranged reciprocally cross on the border of the frame open to form a wire diaphragm 40.

Hereinafter, the operation of the speaker system according to the present invention will be described with reference to the accompanying drawings.

The power is supplied to the audio system, and the air pressure is supplied to the cylinder of the sound pressure generating device 20 by a high pressure pump or a low pressure pump (not shown), which is the sound pressure of the first center pole yoke 51. Pass through the passing holes. This sound pressure is supplied to the 2nd center pole yoke 61 through the space opened and closed by the wire vibration of the wire diaphragm 40. FIG.

The wire vibration of the wire diaphragm 40 vibrates as the voice signal voltage is applied to the input terminal 43. The vibrating direction consists of a direction in which two wires connected by the elastic member 45 compress the elastic member 45. As shown in FIG. 5, this principle is achieved by the interaction of a fixed magnetic field formed by the magnet 30 (ⓝ, ⓢ in the drawing) and a magnetic field generated by a current applied to the wire.

In FIG. 5, ⓝ is a magnetic field transmitted through the second plate 60 and the second center pole yoke, and ⓢ is transmitted through the first plate 50 and the first center pole yoke 51. Magnetic field component. In addition, the magnetic field formed around the wire 44 is formed in accordance with the wire current direction, the wire magnetic field adjacent to the magnetic field component ⓝ of the magnet 30 is N, S, the same polarity is pushing each other and the other polarity is pulled together, The magnet 30 magnetic field is fixed and the wire is movable relative to the elastic member, so that the magnetic field is moved toward the elastic member 45. At this time, the other wire connected by the elastic member 45 is reversed in the current direction by the reciprocating arrangement of the single wire, so that the magnetic fields formed around the wire are also formed oppositely. Therefore, as shown in FIG. 6, the wires exert a force on the wire in the direction in which the elastic member is compressed, so that a gap is formed in the portion 42 not bonded by the elastic member 45.

In this way, the contact portion 42 is in contact with each other before the voice signal is applied, and the wires 44 vibrate in a direction compressing the elastic member 45 when the voice signal is applied through the input terminal 43. Is opened and closed so that the sound pressure as much as opened and closed from the first center pole yoke 51 to the second center pole yoke 61 is transmitted. At this time, the degree of sound pressure transmitted depends on the size of the voice signal applied to the wire, so it is possible to precisely control the sound pressure according to the voice signal.

In the system of the present invention, as shown in FIG. 7, the system is divided into a system for + sound pressure and a system for-sound pressure, and the voice signal applied through the input terminal applies only a + sound pressure or a-sound pressure single signal. However, it is preferable that the wires compressed by the elastic force of the actual elastic member are returned to the state before vibration sufficiently fast. However, according to the intention of the designer, it is possible to apply a slight negative pressure component to the + negative pressure system as shown in FIG. It is also possible to design to support the return by elastic force.

As described in detail above, according to the present invention, when the sound of the speaker is radiated to the outside, a separate vibration source such as a damper, a diaphragm, and a center cap is deleted to prevent generation of vibration sound caused by the vibration source. There is a feature that can reproduce near sound.

In addition, the present invention, by simplifying the vibration structure for the sound pressure control has an effect that can be popularized in high-quality speakers by easy to mass production and low price.

So far, preferred embodiments of the present invention have been described in detail, but the present invention is not limited to the forms and structures applied in the embodiments, and various modifications can be used by those skilled in the art.

Claims (5)

In a speaker system for reproducing voice according to a voice signal, A sound pressure generator for generating sound pressure; A first center pole yoke having a myriad of sound pressure passing holes to allow sound pressure generated from the sound pressure generator to pass therethrough; A magnet at least surrounding the first center pole yoke; A first plate surrounding the first center pole yoke and disposed between the magnet and the sound pressure generating device; A second center pole yoke having a myriad of sound pressure passing holes disposed at a predetermined distance from the first center pole yoke; A second plate surrounding the second center pole yoke and disposed adjacent to the magnet; And A wire diaphragm disposed in a predetermined space between the first center pole yoke and the second center pole yoke; The wire diaphragm is made by arranging a single conductive wire in a reciprocating cross, and attaching two adjacent wires to each other with an elastic member; Speaker system, characterized in that the magnetic field acting on the wire by the electric current according to the voice signal input to the wire of the wire diaphragm and the fixed magnetic field of the magnet to vibrate around the elastic member. The method of claim 1, And the first center pole yoke and the first plate are integrally formed or the second center pole yoke and the second plate are integrally formed. The method of claim 1, The wire diaphragm includes a frame of a predetermined shape with a center, and an end of the single conductive wire arranged in the reciprocating cross is fixed to the frame. The method of claim 1, The elastic member is a speaker system, characterized in that made of at least one of raw rubber, polyester, polyethylene, silicone. In a speaker system for reproducing voice according to a voice signal, + Sound pressure generator for generating a + sound pressure; A first center pole yoke having an infinite number of + negative pressure passage holes to allow the negative pressure generated from the negative pressure generator to pass therethrough; A magnet at least surrounding the first center pole yoke; A first plate surrounding the first center pole yoke and disposed between the magnet and the negative pressure generator; A second center pole yoke having an infinite number of + negative pressure passage holes disposed at a predetermined distance from the first center pole yoke; A second plate surrounding the second center pole yoke and disposed adjacent to the magnet; And a wire diaphragm disposed in a predetermined space between the first center pole yoke and the second center pole yoke; The wire diaphragm is made by arranging a single conductive wire in a reciprocating cross, and attaching two adjacent wires to each other with an elastic member; A sound pressure generator for generating sound pressure; A first center pole yoke having an innumerable negative pressure through-hole so that negative sound generated from said negative pressure generator can pass therethrough; A magnet at least surrounding the first center pole yoke; A first plate surrounding the first center pole yoke and disposed between the magnet and the negative pressure generating device; A second center pole yoke having an infinite number of negative-pressure passage holes, spaced apart from the first center pole yoke; A second plate surrounding the second center pole yoke and disposed adjacent to the magnet; And a wire diaphragm disposed in a predetermined space between the first center pole yoke and the second center pole yoke; The wire diaphragm is a speaker system, characterized in that the reciprocating cross arrangement of a single conductive wire, the two adjacent wires are attached to every other elastic member.