KR100188285B1 - Speaker system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker system, and more particularly, to a speaker having a corner for converting an electrical signal into a sound wave signal and a frame having a plurality of sound wave radiation holes, and a sound wave mounted on a rear side of the frame and radiated to a rear side of the speaker. And a discharge horn extending to the tip of the sound wave amplification horn to amplify a portion and discharging the amplified sound wave.

Therefore, in the present invention, by absorbing and amplifying a part of the sound waves radiated to the rear side of the speaker, it is possible to prevent the generation of reflected and standing waves in the sound amplification horn, thereby increasing the amplification efficiency of the very first time and at the same time obtaining clear sound. In particular, the design of the speaker is easy to apply to compact audio equipment and TV, and the sound amplification horn is formed to be separated and combined, thereby significantly reducing the manufacturing cost and facilitating assembly. There is.

Description

Speaker system

1 is a schematic cross-sectional view showing a conventional speaker system.

2 is an exploded perspective view showing a speaker system according to the present invention.

3 is a combined cross-sectional view of the present invention.

4 is a cross-sectional view taken along the line I-I of FIG.

5 is a cross-sectional view taken along the line II-II of FIG.

* Explanation of symbols for main parts of the drawings

10 cabinet 12 speaker

14 frame 14a: sound wave radiation hole

16: COUNGE 20: Acoustic Wave Horn

22: first amplifier 22b: sound absorption

22c: Amplifier 22d: Hanging groove

22e: guide hole 24: second amplifying member

24a: locking protrusion 24b: guide pin

26: discharge horn

[Related technical field]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker system applied to an audio device or a television, and more particularly, to a speaker system capable of amplifying a part of sound waves radiated to the rear of a speaker to further improve bass characteristics.

[Prior art]

In general, a speaker that converts an electric signal into a sound wave signal and radiates it into free space is most commonly used as a speaker. When such a speaker is generated, a strong cylindrical magnetic field occurs in a magnet located between a center pole and a yoke. A force is applied to the voice coil provided therein as the signal current flows, and this force vibrates a corner shaped diaphragm that is adhering to the paper material to emit sound waves.

At this time. Since the generated force is constant regardless of frequency, it is possible to obtain a flat frequency characteristic over a fairly wide frequency range, where the low range is the lowest resonant frequency determined by the compliance by the equivalent mass including the radiation mass and the edge and damper. The high range is limited to vibration due to the limitations of the stiffness.

In addition, since the split vibration can obtain a high frequency by reducing the diameter of the corner, in the actual speaker system, speakers having different apertures in the same structure are appropriately combined to emit sound waves in a wider frequency range.

In addition, the low-frequency radiation is affected by the cabinet used in addition to the lowest resonant frequency, which is not easily radiated at low frequencies due to the phase offset between the front and rear of the corner when the corner vibrates and emits sound waves. Will not.

Therefore, in order to obtain low frequency sound waves, it is necessary to increase the size of the cabinet to some extent, which is limited when applied to a compact audio device or an acoustic device such as a television.

Conventionally, a speaker system for obtaining low frequency sound waves without greatly changing the size of a cabinet is disclosed in Korean Patent Publication No. 92-5066.

As shown in FIG. 1, the speaker 2 is fixed to the inside of the speaker housing 1 and has a diaphragm 2a for converting electrical energy into sound energy, and by vibration of the diaphragm 2a. A sound collecting device (3) for collecting sound waves generated, a waveguide (4) for transmitting the sound waves collected by the sound collecting device (3) by a predetermined distance, and radiating and expanding the sound waves output from the waveguide (4) In the speaker system provided with the horn (5), a tube (6) having an opening having an inner diameter equal to the maximum diameter of the diaphragm (2a) is attached to the frame of the speaker (2) so that the sound collecting device (3) and the waveguide ( 4) is integrally formed, and the horn 5 is attached to the other opening of the tube 6.

Therefore, the sound wave generated by the vibration of the diaphragm 2a is radiated to the front side of the speaker housing 1 and radiated to the rear side thereof, and all of the sound waves radiated to the rear side are collected in the sound collecting apparatus 3. And amplified in the tube 6 through the waveguide 4 and then radiated to the front side of the speaker housing 1 through the horn 5.

However, in the conventional speaker system configured as described above, it is possible to amplify the bass of a part of the sound waves radiated to the rear side of the speaker to some extent, but since all the sound waves radiated to the rear of the speaker are transmitted through the waveguide and the horn, severe interference between the rear sounds As a phenomenon, various problems such as not only amplifying low bass, particularly ultra bass, as desired, but also deteriorating the sharpness of the sound due to distortion of sound waves are inherent.

In addition, by collecting all of the sound waves radiated to the rear side of the speaker, the size of the waveguide and the horn increases, and thus, the size of the speaker housing increases, thereby making it difficult to apply to a compact audio device or a television. .

In addition, as the mold is manufactured integrally when manufacturing the formed tube mechanically, various problems have been inherent such that the mold is enlarged to act as a factor of increasing the manufacturing cost.

[Purpose of invention]

An object of the present invention is to collect and amplify and radiate some of the sound waves radiated to the rear side of the speaker to solve the problems of the prior art, in particular to increase the amplification efficiency of ultra-low sound and at the same time obtain a clearer sound To provide a speaker system.

Another object of the present invention is to provide a miniaturized and lightweight speaker system that can be applied to compact audio equipment or televisions.

Still another object of the present invention is to provide a speaker system that is easy to manufacture and reduces manufacturing cost by allowing the sound wave amplifying horn to be separated to amplify sound waves.

In order to achieve the above object, a speaker having a corner for converting an electric signal into a sound wave signal and a frame formed with a plurality of sound wave radiation holes, and amplified a part of sound waves mounted on the rear side of the frame and radiated to the rear side of the speaker It characterized in that it comprises a sonic amplification horn and an outlet horn extending to the tip of the sonic amplification horn to discharge the amplified sound waves.

EXAMPLE

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

2 is an exploded perspective view of a speaker system according to the present invention, and FIG. 3 is a cross sectional view of a combination of the speaker system according to the present invention.

In the drawing, the speaker 12 is mounted inside the front of the cabinet 10.

The speaker 12 is fixed to a frame 14 having a plurality of sound wave radiating holes 14a, a corner 16 attached to the inside of the frame 14, and a rear side of the frame 14. The installed magnet 18 is provided.

In addition, a sound wave amplification horn 20 is installed at the rear side of the frame 14 to absorb and amplify a portion of sound waves radiated through the plurality of sound wave radiating holes 14a.

The sound wave amplifying horn 20 has an opening formed at one side thereof and absorbs and amplifies some of the sound waves radiated toward the rear side of the speaker 12, and the opening portion of the first amplifier member 22. The second amplification member 24 is detachably coupled to the side.

The first amplification member 22 is a sound wave radiated through a mounting portion 22a fastened to the rear side of the frame 14 and a plurality of sound wave radiation holes 14a formed on the rear side of the frame 14. Sound absorbing portion 22b that absorbs a part, amplifying portion 22c gradually increasing in diameter so as to amplify sound waves introduced through the sound absorbing portion 22b, and a plurality of formed on both sides of the amplifying portion 22c. A locking groove 22d and a guide hole 22e are provided.

The second amplifying member 24 is formed in substantially the same shape as the amplifying part 22c, and is inserted into and caught in the locking groove 22d on both sides thereof as shown in FIGS. 4 and 5. A plurality of stopper protrusions 24a and a plurality of guide pins 24b inserted into the guide holes 22e are provided.

In addition, the second amplifying member 24 is formed with an elastic piece 24c so that an electric wire or the like can be inserted therein.

On the other hand, the discharge horn 26 for discharging the sound wave amplified from the inside of the front end of the sound wave amplification horn 20 is coupled to the first and second amplification members 22, 24 is formed.

In the speaker system according to the present invention configured as described above, when the cavity 16 vibrates by a strong cylindrical magnetic field generated by the magnet 18, the sound wave is radiated to the front side of the speaker 12 and at the same time to the rear side. Road radiation is achieved.

In addition, some of the sound waves radiated to the rear side of the speaker 12 are radiated to the inside of the cabinet 10 through the plurality of sound wave radiating holes 14a formed in the frame 14.

At this time, some of the sound waves radiated through the sound wave radiating hole 14a at the rear side of the lounge 16 are sufficiently amplified while passing through the inside of the sound wave amplifying horn 20 and then radiated to the front side of the cabinet 10. .

That is, some of the sound waves radiated through the sound wave radiating hole 14a are absorbed through the sound absorbing unit 22b, and then sufficiently amplified while passing through the amplifying unit 22c, and the cabinet 10 through the discharge horn 26. ) Is radiated to the front side.

Therefore, the sound waves absorbed through the sound absorbing portion 22b are sufficiently amplified in the amplifying portion 22c whose diameter is gradually enlarged and then radiated through the discharge horn 26, so that the amplification efficiency of the ultra low sound is increased. Accordingly, it is possible to prevent distortion caused by interference of sound waves and to improve sound clarity.

In addition, since the acoustic wave amplification horn 20 is separately manufactured by the first and second amplifying members 22 and 24, the mold is downsized, thereby reducing the manufacturing cost and simultaneously forming a plurality of second amplifying members 24. The engaging protrusion 24a and the guide pin 24b are inserted into the plurality of locking grooves 22d and the guide holes 22e formed in the second amplifying member 22, thereby making the assembly very convenient.

In addition, by absorbing and amplifying only a part of sound waves radiated to the rear side of the speaker 12, the size of the sound wave amplification horn 20 can be miniaturized, which can be usefully applied to a compact audio device or a television.

Therefore, as described above, in the present invention, by absorbing and amplifying a part of sound waves radiated to the rear side of the speaker, the generation of reflected waves and standing waves in the sound wave amplification horn is prevented, thereby increasing the amplification efficiency of the ultra low sound and at the same time, clear sound In particular, it is easy to design a speaker, which is useful for compact audio equipment and television, and the sound amplification horn is formed to be separated and combined, thereby significantly reducing manufacturing cost and facilitating assembly. It has the effect of being.

Claims (2)

A speaker system comprising a speaker 12 for converting an electrical signal into a sound wave signal, and a sound wave amplification horn 20 for amplifying a part of sound waves radiated to the rear side of the speaker 12, wherein the sound wave amplification horn 20 ) Has a sound absorbing portion 22b for absorbing a part of the speaker 12 and the rear sound at the front end, and has an amplifying portion 22c which gradually enlarges in diameter while opening one side thereof, and a plurality of engaging grooves 22d at both edges. ) And a plurality of locking projections 24a having a shape symmetrical with the first amplifying member 22 having a guide hole 22e formed therein and being inserted into and fixed in the locking groove 22d at an edge thereof. And a second amplifying member (24) having a plurality of guide pins (24b) inserted into the guide holes (22e). The speaker system according to claim 1, wherein at least one of the first and second amplifying members is provided with an elastic piece to which an electric wire is inserted and fixed.