KR20080101265A - Anti-vibration speaker - Google Patents

Anti-vibration speaker Download PDF

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Publication number
KR20080101265A
KR20080101265A KR1020070047794A KR20070047794A KR20080101265A KR 20080101265 A KR20080101265 A KR 20080101265A KR 1020070047794 A KR1020070047794 A KR 1020070047794A KR 20070047794 A KR20070047794 A KR 20070047794A KR 20080101265 A KR20080101265 A KR 20080101265A
Authority
KR
South Korea
Prior art keywords
speaker
frame
vibration
diaphragm
fastening
Prior art date
Application number
KR1020070047794A
Other languages
Korean (ko)
Inventor
강유형
Original Assignee
주식회사 대우일렉트로닉스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 대우일렉트로닉스 filed Critical 주식회사 대우일렉트로닉스
Priority to KR1020070047794A priority Critical patent/KR20080101265A/en
Publication of KR20080101265A publication Critical patent/KR20080101265A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2873—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops

Abstract

A non-vibration speaker improves the noises generated by the vibration by attenuating the vibration generated in frames of two speakers. An outer appearance of a first frame(100) is formed by a first frame(180). An outer appearance of a second speaker(200) is formed by a second frame(280). A coupler(300) couples a first coupling unit(190) formed in a first frame and a second coupling unit(290) formed in a second frame to face each other. The first coupling unit is protruded from an edge of the first frame. The second coupling unit is protruded from the edge of the second frame. The coupler couples the first and second frames through a first coupling groove(195) formed in a first coupling part and a second coupling groove(295) formed in a second coupling part.

Description

Vibration-free speaker {ANTI-VIBRATION SPEAKER}

1 is an exemplary view showing a cross section of a conventional general speaker.

2 is a block diagram showing a cross section of the vibration-free speaker according to the present invention.

3 is a perspective view of the speaker shown in FIG.

<Description of Major Symbols in Drawing>

100: first speaker 200: second speaker

180: frame 110: lower plate

120: magnet 140: upper plate

135: voice coil 130: bobbin

165: edge 160: diaphragm

150: damper 170: dust cap

190: first fastening portion 195: first fastening groove

300: Fastener

The present invention relates to a speaker, and more particularly, to a vibration-free speaker in which vibration of a frame can be suppressed.

In general, a speaker is an audio device that converts an electric signal into vibration of a diaphragm in an audio or various multimedia device to generate a small density wave in the air to copy sound waves, and converts an electric signal amplified from an amplifier into an acoustic signal to provide an indoor or outdoor space. It performs the function of radiating with acoustic energy.

These speakers can be classified into various types according to their structure or use, and can be classified into a coin type (dynamic type), an electrostatic type (condenser type), an electromagnetic type (magnetic type), a piezoelectric type, and a discharge type according to an acoustic conversion method. According to the shape of the diaphragm, it may be divided into a cone shape, a dome shape, a horn shape, a ribbon shape, and a flat plate shape. Among them, a moving coil type speaker having a relatively simple structure, good characteristics, and high conversion efficiency is widely used.

1 is an exemplary view showing a cross section of a conventional general speaker.

As shown in FIG. 1, a conventional general speaker has a bottom plate 10 having a pole piece integrally protruding from a central portion thereof, and a magnet sequentially fastened to an upper side of the lower plate. 20, top plate (40), voice coil (voice coil) 35 is wound, bobbin (30) mounted on the outer peripheral surface of the pole piece of the lower plate, one end on the upper side of the bobbin A diaphragm 60 connected to each other, a damper 50 for controlling the vibration of the diaphragm, a trumpet-shaped frame 80 to which another end of the damper is fixed, and an upper end of the diaphragm It includes a fixed edge (65) and a dust cap (70) protruding and attached to the central portion of the diaphragm.

In the speaker having the above configuration, a magnetic field is generated when the voice current in the alternating current flows to the voice coil 35. The magnetic field interacts with the magnetic field of the magnet 20 to reciprocate the bobbin 30 up and down, and the diaphragm 60 attached to the bobbin 30 is vibrated together by the movement of the bobbin 30, thereby voice The current will change to sound.

That is, the voice coil 35 performs a linear reciprocating motion by kinetic energy in the vertical direction generated by magnetic energy and electrical energy according to Fleming's left hand law. In addition, the kinetic energy given to the voice coil 35 moves the bobbin 30 and the bonded bobbin 30 together, thereby operating the vibration unit (vibration plate, dust cap) coupled with the bobbin 30, Sound is output.

As described above, in order to make a sound through the speaker, the speaker's cone paper 60 must move to compress and expand the air, since the movement of the diaphragm 60 is transmitted to the frame 80. Frame 80 vibrates like a cone paper 60.

However, the vibration of the frame 80 due to the above causes the vibration of the speaker itself, so that the sound quality of the speaker deteriorates.

In addition, when the speaker is mounted on a product such as a TV or audio, the vibration of the frame 80 as described above can also be transmitted to the product, which in turn causes vibration of the product itself, resulting in worse sound quality of the speaker. The problem arises.

An object of the present invention for solving the above problems is to provide a vibration-free speaker, which is composed of two speakers coupled to each other so that vibrations generated in the two speakers can be canceled with each other.

The present invention for achieving the above object, the first speaker is the appearance is formed by the first frame; A second speaker whose appearance is formed by a second frame; And a fastener for mutually coupling the first fastening part formed on the first frame and the second fastening part formed on the second frame to face each other.

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

Figure 2 is a block diagram showing a cross-section of the vibration-free speaker according to the invention, Figure 3 is a perspective view of the speaker shown in FIG.

As shown in FIG. 2, the vibration-free speaker according to the present invention is configured in a state in which the first speaker 100 and the second speaker 200 are connected.

Since each of the first speaker 100 and the second speaker 200 is composed of the same components, the configuration of the first speaker 100 will be described below as an example.

That is, the first speaker 100 to be applied to the present invention includes a frame 180 made of a conical metal material and having a through hole having a predetermined diameter formed at the center of the bottom surface, and predetermined from the rear surface of the frame. A bottom plate 110, which is located at a distance from the front center and integrally formed with a pole piece of a predetermined length toward the through-hole, has a pole piece on the front surface of the bottom plate. Is attached to be spaced apart by a predetermined distance and the annular magnet (120) having a shorter length than the pole piece (120), the top plate (140) is sandwiched between the frame and the magnet is attached to both sides, the pole The bobbin 130, which is fitted with a predetermined distance to the outside of the piece and has a voice coil 135 wound on the outer circumference thereof, is formed in a cone having a smaller size than the frame. Installed inside the frame and the central rear end is integrally attached to the front outer peripheral surface of the bobbin, the front edge is coupled to the inside of the front edge of the frame by the edge 165 (cone paper, Cone paper) 160, The outer edge is attached to the bottom surface of the frame, the inner edge is attached to the outer peripheral surface of the front end of the bobbin and formed in the center of the damper (150) and the diaphragm in the annular corrugation formed on the front and back It is configured to include a dust cap (170). On the other hand, the outer side of the front edge of the frame 160 is formed with a first fastening portion 190 protruding in a horizontal or vertical direction with the plane of the circle formed by the front edge of the frame, A first fastening groove 195 is formed in the first fastening portion 190.

The frame 180 is made of a conical metal material, and a through hole having a predetermined diameter is formed at the center of the bottom surface.

The upper plate 140 is formed with an annular guide groove penetrated to guide the bobbin 130 for vertical reciprocating motion under the influence of the magnetic force line.

The magnet 120 has a donut shape and is mounted between the lower plate 110 and the upper plate 140.

The pole piece of the lower plate 110 extends from the center of the lower plate 110 toward the rear end center of the frame 180 to penetrate the upper plate 140.

The diaphragm 160 is conical and is attached to one end of the frame 180 and is connected to the end of the bobbin 130 to vibrate by vertically reciprocating motion of the bobbin 130 to generate sound. The material of the diaphragm is mainly made of soft rather than rigid body for smooth vibration.

The damper 150 performs a function of attenuating the vibration of the diaphragm 160 at the rear outer circumference of the diaphragm (cone paper) 160.

In the following description, components included in the first speaker 100 will be described as first components, and the same components of the second speaker 200 will be described as second components.

In the vibration-free speaker according to the present invention, the first speaker 100 and the second speaker 200 having the configuration as described above are coupled by the fastener 300 in a state facing the outer circumferential surface of the frame.

That is, as described above, the first fastening portion 190, in which the first fastening groove 195 is formed, protrudes outside the front edge of the first frame 180 of the first speaker 100, and the second fastening portion 190 is formed. A second fastening portion 290, which is also formed with a second fastening groove 295, also protrudes outside the front edge of the second frame 280 of the speaker 200, and the first fastening groove 195 and the first fastening groove are formed. The first speaker 100 and the second speaker 200 are coupled by the fastener 300 that penetrates the second fastening groove 295 to fix the first fastening groove and the second fastening groove.

The fastener 300 may be configured in various forms, for example, may be composed of a bolt and a screw. That is, the bolt penetrated from the first fastening groove to the second fastening groove may be fixed by using a nut at the outside of the second fastening groove, thereby fixing the first fastening portion 190 and the second fastening portion 290. Will be.

On the other hand, since the speaker outputs sound toward the front end of the frame, if the first fastening portion and the second fastening portion are formed on all the outer peripheral surfaces of the front end of the frame of the first speaker 100 and the second speaker 200, No sound can be emitted to the outside. Therefore, in the vibrationless speaker according to the present invention, as shown in FIG. 3, a plurality of first fastening parts 190 and second fastening parts 290 are formed at predetermined intervals on the front outer peripheral surface of the frame.

The interval in which the first fastening part 190 and the second fastening part 290 are formed may be variously set in consideration of characteristics of each vibration-free speaker.

In addition, the thicknesses of the first fastening unit 190 and the second fastening unit 290 may also be variously set in consideration of characteristics of each vibrating speaker.

That is, the thickness of the first fastening part and the second fastening part is in a part of the first frame 180 and the second frame 280 which is not coupled by the first fastening part 190 and the second fastening part 290. As much as the space 400 is generated, since the sound generated from the speaker is emitted to the space 400 to the outside, the sound quality characteristics of the sound may be changed by the interval and thickness of the space 400. Accordingly, the intervals and thicknesses of the first fastening part 190 and the second fastening part 290 may be set in various ways in consideration of characteristics of the vibration-free speaker.

On the other hand, hereinafter, the vibration-free speaker according to the present invention will be described with respect to the principle of emitting sound and a method capable of suppressing vibration.

That is, each of the first speaker 100 and the second speaker 200 constituting the vibration-free speaker according to the present invention is a device used to convert an electrical signal into an acoustic signal and radiate sound waves into a space. An electrical signal including all information related to the sound, such as the cree and the frequency of the sound, is input to the 135, and the voice coil 135 has different directions of the N pole S pole and the strength of the magnetic field according to the electrical signal. Meanwhile, a magnet 120 having a constant magnetic field strength is located behind the voice coil 135. The magnet 120 and the voice coil 135 push each other according to the strength of the magnetic field of the voice coil 135. It also pulls.

In addition, according to the strength of the magnetic field of the voice coil 135, the pushing and pulling force of the magnet 120 and the voice coil 135 may also increase or decrease.

One end of the bobbin 130 on which the voice coil 135 is wound is connected to the diaphragm 160, and the diaphragm 160 moves together according to the movement of the bobbin 130 moving along the voice coil 135. do. Therefore, the vibration of the diaphragm 160 vibrates the surrounding air to generate sound.

That is, the first speaker 100 and the second speaker 200 use Fleming's left-hand rule that a current flows when a current flowing in a magnetic field is applied to a magnetic field, and a bobbin placed in a magnetic field formed by the magnet 120. When the electrical voice signal (current) is input to the voice coil 135 wound on the 130, the bobbin 130 moves back and forth in the extension direction of the pole piece of the lower plate 110, and the bobbin ( The diaphragm 160 connected to 130 is also moved. If the diaphragm 160 moves forward, + sound pressure is generated. On the contrary, when the diaphragm 160 moves to the rear, the sound pressure is generated while the sound pressure is generated. At this time, the generated sound is audible to the human ear since it has an audible frequency range of approximately 20 Hz to 20 KHz.

On the other hand, the present invention is to suppress the vibration of the frame generated when using one speaker, by connecting the two speakers (100, 200) to face each other, two speakers by operating in phase with each other It has a characteristic that the vibration is generated as a whole by attenuating its own vibration generated in each speaker.

That is, in the present invention, the first speaker 100 and the second speaker 200 are coupled to face each other by using the fastening parts 190 and 290 and the fastener 300, while the first speaker 100 is in phase. ) And the second speaker 200 are driven.

For example, since the first speaker 100 and the second speaker 200 are driven in phase, when the first speaker generates “+” sound pressure in FIG. 2, the first diaphragm 160 and the first frame ( 180 is moved in the right direction, and the second speaker 200 also generates a "+" sound pressure, so that the second diaphragm and the second frame 280 are moved to the left, so that the two frames 180, The vibration directions of the 280 may be canceled with each other.

Likewise, in FIG. 2, when the first speaker generates the negative pressure, the first diaphragm 160 and the first frame 180 move to the left direction, and the second speaker 200 also receives the negative sound pressure. As a result, since the second diaphragm and the second frame 280 are moved to the right, the vibration directions of the two frames 180 and 280 may cancel each other.

That is, the vibration generated by the diaphragm and transmitted to the frame is canceled by each other due to the movement of the diaphragm in phase so that no vibration occurs in the vibration-free speaker itself.

The present invention as described above, there is an excellent effect that the noise generated by the vibration of the speaker itself can be improved by canceling each other vibration generated in the frame of the two speakers.

In addition, when the present invention is mounted on a product such as a TV or various acoustic devices, there is an excellent effect that various problems caused by product vibration can be solved by not transmitting vibration to the product.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (4)

A first speaker whose appearance is formed by a first frame; A second speaker whose appearance is formed by a second frame; And And a fastener configured to couple the first fastening portion formed on the first frame and the second fastening portion formed on the second frame to face each other. The method of claim 1, The first fastening portion protrudes from an edge end of the first frame, The second fastening portion protrudes from an edge end of the second frame, The fastener is a vibration-free speaker, characterized in that for coupling the first frame and the second frame through the first fastening groove formed in the first fastening portion and the second fastening groove formed in the second fastening portion. The method of claim 1, The first fastening portion is formed in plurality at regular intervals at the edge end of the first frame, The second fastening portion is formed in a plurality at regular intervals at the edge end of the second frame, And the first frame edge and the second frame edge are spaced apart from each other by the first coupling portion and the second coupling portion coupled by the fastener. The method according to any one of claims 1 to 3, The first speaker and the second speaker is vibration-free speaker, characterized in that driven in phase with each other.
KR1020070047794A 2007-05-16 2007-05-16 Anti-vibration speaker KR20080101265A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070047794A KR20080101265A (en) 2007-05-16 2007-05-16 Anti-vibration speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070047794A KR20080101265A (en) 2007-05-16 2007-05-16 Anti-vibration speaker

Publications (1)

Publication Number Publication Date
KR20080101265A true KR20080101265A (en) 2008-11-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070047794A KR20080101265A (en) 2007-05-16 2007-05-16 Anti-vibration speaker

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111836161A (en) * 2019-04-15 2020-10-27 哈曼贝克自动系统股份有限公司 Loudspeaker arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111836161A (en) * 2019-04-15 2020-10-27 哈曼贝克自动系统股份有限公司 Loudspeaker arrangement

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