KR20100042176A - Speaker and method for manufacturing thereof - Google Patents

Speaker and method for manufacturing thereof Download PDF

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Publication number
KR20100042176A
KR20100042176A KR1020080101341A KR20080101341A KR20100042176A KR 20100042176 A KR20100042176 A KR 20100042176A KR 1020080101341 A KR1020080101341 A KR 1020080101341A KR 20080101341 A KR20080101341 A KR 20080101341A KR 20100042176 A KR20100042176 A KR 20100042176A
Authority
KR
South Korea
Prior art keywords
magnet
plate
yoke
speaker
protrusion
Prior art date
Application number
KR1020080101341A
Other languages
Korean (ko)
Inventor
이종배
Original Assignee
크레신 주식회사
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 크레신 주식회사 filed Critical 크레신 주식회사
Priority to KR1020080101341A priority Critical patent/KR20100042176A/en
Publication of KR20100042176A publication Critical patent/KR20100042176A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/024—Manufacturing aspects of the magnetic circuit of loudspeaker or microphone transducers

Abstract

PURPOSE: A speaker and a method for manufacturing thereof is provided to suppress the eccentric of a plate and a magnet at the center of a yoke by welding the magnet and the plate which are center of the yoke. CONSTITUTION: A plate fuse protrusion(231) is formed in a lower of the plate(230) to be one body. The plate is fixed to the magnet(220) by fusing the plate fuse protrusion. The yoke fuse protrusion(211) is formed in an upper of the yoke(210) to be one body. The yoke is fixed to the magnet by fusing the yoke fuse protrusion. The yoke fuse protrusion and plate fuse protrusion are arranged in a first imaginary line(L). The yoke fuse protrusion and plate fuse protrusion are fused through one time spot welding. The first imaginary line is defined as a line which perpendicularly passes through the upper part of the plate and the lower-part of yoke.

Description

Speaker and method for manufacturing

The present invention relates to a speaker and a method of manufacturing the same.

A speaker is a device that amplifies voice by vibrating a diaphragm.

Generally, a speaker includes a yoke, a magnet, a plate, a voice coil, and a diaphragm.

The yoke is for fixing the magnet, and the plate is combined with the magnet to collect the magnetic field generated by the magnet.

The voice coil is excited by an electrical acoustic signal to generate a magnetic field, and the vibration coil interferes with the magnetic field of the magnet. And the diaphragm coupled to the voice coil to amplify the sound by vibrating with the voice coil.

On the other hand, the yoke is fixed to the lower portion of the magnet, the plate is fixed to the upper portion of the magnet, conventionally used a method of contacting each component using an adhesive.

However, when the adhesive is used, since the drying time of a predetermined time must be added after the adhesion, there is a problem in that the overall process time is long.

In addition, the technique in which the yoke 10, the magnet 20, and the plate 30 are coupled by the rivet 40 in the Republic of Korea Patent Publication No. 2001-0088726 (name of the present invention: earphone speaker) in such a manner that no adhesive is used. This has also been disclosed.

However, when using the rivet 40, the rivet 40 is inserted so as to pass through the yoke 10, the magnet 20, the plate 30, and is fixed by applying pressure to both ends of the rivet 40, The magnet 20 and the plate 30 are placed in the center of the yoke 10, so that a so-called eccentric phenomenon occurs, which deviates from the center of the yoke 10 by the impact generated during the pressurization.

Accordingly, there is a problem in that noise is generated due to unilateral vibrations in which the diaphragm does not vibrate in a balanced manner.

The present invention is to provide a technique for a speaker that can be combined with a magnet, yoke, plate in a structure different from the conventional one to shorten the process time, and prevent eccentricity.

A speaker according to the present invention for achieving the above object, a magnet for forming a magnetic field; A yoke coupled with the magnet; A plate coupled to the magnet and collecting a magnetic field generated by the magnet; A voice coil vibrating by generating a magnetic field that interferes with the magnetic field of the magnet by an electrical signal; And a diaphragm vibrating together with the voice coil to generate sound pressure. And at least one of the yoke and the plate is welded to the magnet.

In addition, at least one of the yoke and the plate is characterized in that it has a fusion projection welded to the magnet.

In addition, the speaker manufacturing method according to the present invention, a magnet having a through-hole penetrating the inside; Yoke and plate to collect the magnetic field generated in the magnet; A voice coil vibrating by generating a magnetic field that interferes with the magnetic field of the magnet by an electrical signal; And a diaphragm vibrating together with the voice coil to generate sound pressure. And one of the yoke and the plate has an insertion protrusion inserted into the through hole, and the other one of the yoke and the plate is welded to an end of the insertion protrusion.

In addition, placing the magnet so that one side of the magnet in contact with the yoke; Placing the plate such that the plate is in contact with the other surface of the magnet; Welding the yoke and plate and the magnet; Characterized in that it comprises a.

In addition, preparing a yoke and a plate each formed with a fusion protrusion; Placing the magnet such that one surface of the magnet contacts the fusion protrusion of the yoke; Placing the plate such that the fusion protrusion of the plate contacts the other surface of the magnet; Welding the fusion protrusion of the yoke and the fusion protrusion of the plate and the magnet; It characterized in that it comprises a.

In addition, preparing to form an insertion protrusion on any one of the yoke and the plate; Inserting the insertion protrusion into a through hole of a magnet; And welding the other one of the yoke and the plate with an end of the insertion protrusion. Characterized in that it comprises a.

According to the present invention, there is an effect that the magnet and plate can be prevented from being eccentrically coupled at the center of the yoke by welding the magnet and the plate at the center of the yoke.

In addition, when welding the yoke and the plate and the magnet, the fusion protrusion formed integrally with the yoke and the plate is welded to the magnet, so that a separate filler metal such as solder or the like is not required during welding. Accordingly, there is an effect that can simplify the process, and shorten the process time.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings, description of overlapping description or obvious matters will be omitted or compressed as possible.

2 is a perspective view of a speaker according to the present invention.

2, the speaker 200 according to the present invention includes a yoke 210, a magnet 220, a plate 230, a voice coil 240, a diaphragm 250, a printed circuit board 260, and the like. It is configured by.

The yoke 210 is formed of a cylindrical body 211 having an open top and a flange 212 extending outwardly of the body 211, and the magnet 220 is fixed to the center of the body 211. .

The plate 230 is coupled to the upper surface of the magnet 220 to collect the magnetic field generated by the magnet 220.

The voice coil 240 is magnetized by an electrical signal to generate a magnetic field. The voice coil 240 vibrates while the magnetic field of the voice coil 240 and the magnetic field of the magnet 220 interfere with each other. Here, the electrical signal is a sound is converted into an electrical signal, the electrical signal is provided to the voice coil 240 through the printed circuit board 260.

The diaphragm 250 is fixed to the voice coil 240. When the voice coil 240 vibrates, the diaphragm 250 vibrates like the voice coil 240 to generate sound pressure.

Meanwhile, the yoke 210 and the plate 230 are formed of a metallic material, and are coupled to the magnet 220 by welding.

Referring to FIG. 3, the plate 230 includes a plate-side fusion protrusion 231 integrally formed at the lower side, and the plate-side fusion protrusion 231 when welding the plate 230 and the magnet 220. The plate 230 is fused and fixed to the magnet 220 while melting. And the yoke 210 is provided with a yoke-side fusion protrusion 211 integrally formed on the upper side, when the yoke-side fusion protrusion 211 is melted when the yoke 210 and the magnet 220 is welded yoke 210 Is fused and fixed to the magnet 220. In this case, the fusion protrusions 211 and 231 are formed to be disposed on the first virtual line L, and thus, the fusion protrusions 211 and 231 may be fused by one spot welding. Here, the first virtual line L is defined as a line passing vertically through the upper surface of the plate 230 and the lower surface of the yoke 210.

4 is a conceptual view conceptually viewed from above the position where the fusion protrusions 211 and 231 are formed.

As shown in FIG. 4, the plate side fusion protrusion 231 is formed at the center of the plate 230, and the yoke side fusion protrusion 211 is formed at the center of the yoke 210.

In another embodiment of the present invention, as shown in FIG. 5, the yoke 510 is provided with a plurality of yoke-side fusion protrusions 511 and the plate 530 is provided with a plurality of plate-side fusion protrusions 531. Can be. In this case, the yoke-side fusion protrusion 511 and the plate-side fusion protrusion 531 are provided to have the same number as each other, and are formed to be disposed on the second virtual line L '. Here, the second virtual line L 'is defined as a line passing vertically between the upper surface of the plate 530 and the lower surface of the yoke 510.

In addition, a metal plating layer 521 may be formed on the surface of the magnet 520, thereby making it possible to more reliably weld between the yoke 510 and the plate 530 and the magnet 520. The metal plating layer 521 is preferably formed of a metal material having conductivity such as nickel or zinc, and is intended to allow a current to flow into the metal plating layer 521 when welding by a method such as electric welding or arc welding. . The metal plating layer 521 may be formed over the entire surface of the magnet 520, and may be formed only on the surface of the magnet 520 in contact with the fusion protrusions 511 and 531.

FIG. 6 is a conceptual view conceptually viewed from above the position at which the fusion protrusions 511 and 531 are formed in FIG. 5.

As shown in FIG. 6, the yoke-side fusion protrusions 511 and the plate-side fusion protrusions 531 are provided in plural, and are arranged at equal intervals on the outer circumference of the virtual circle C. As shown in FIG. Here, the virtual circle C is defined as a circle whose center is the center of the yoke 510 and the plate 530.

Meanwhile, as shown in FIG. 7, a through hole 721 penetrating the inside is formed in the magnet 720, and an insertion protrusion 711 inserted into the through hole 721 may be formed in the yoke 710. have. In addition, the plate 730 is welded to the end of the insertion protrusion 711, the length of the insertion protrusion 711 is preferably formed to be equal to or longer than the length of the through hole. Through this, the plate 730 and the magnet 720 and the yoke 710 can be firmly coupled.

In addition, as illustrated in FIG. 8, a through hole 821 may be formed in the magnet 820, and an insertion protrusion 831 inserted into the through hole 821 may be formed in the plate 830. The yoke 810 is welded to the end of the insertion protrusion 831.

Hereinafter, a method for manufacturing a speaker according to the present invention will be described.

As shown in FIG. 9A, first, the bottom surface of the magnet 920 contacts the top surface of the yoke 910.

Thereafter, as shown in FIG. 9B, the welder 940 is positioned above the plate 930 and below the yoke 910. Then, while applying a predetermined voltage to the welder 940, the welder 940 is pressed to the magnet 920 side.

Then, as shown in FIG. 9C, the current passes through the plate 930, the magnet 920, and the yoke 910 in order, or vice versa. Accordingly, the partial surface 931 of the plate 930 corresponding to the welder 940 and the partial surface 921 of the magnet 920 corresponding to the welder 940 are welded to each other and correspond to the welder 940. The partial surface 911 of the yoke 910 and the partial surface 922 of the magnet 920 corresponding to the welder 940 are welded to each other.

Next, the speaker manufacturing method in the case where the plate side fusion protrusion 1031 is formed in the plate 1030 and the yoke side fusion protrusion 1011 is formed in the yoke 1010 is demonstrated.

As shown in FIG. 10A, first, the lower surface of the magnet 1020 is placed in contact with the yoke-side fusion protrusion 1011 formed on the yoke 1010, and the plate-side fusion protrusion 1031 formed on the plate 1030 is disposed. It is arranged to contact the upper surface of the magnet 1020.

Thereafter, as shown in FIG. 10B, the welder 1040 is positioned above the plate 1030 and below the yoke 1010, and is disposed at positions corresponding to the fusion protrusions 1011 and 1031. Then, the welding machine 1040 is pressed to the magnet 1020 side while applying a predetermined voltage to the welding machine 1040.

Then, as shown in FIG. 10C, while the plate side fusion protrusion 1031 and the yoke side fusion protrusion 1011 are melted by the current passing through the plate 1030, the magnet 1020, and the yoke 1010, the plate 1030. ) And the yoke 1010 are fused and fixed to the magnet 1020.

Next, a speaker manufacturing method in the case where the insertion protrusion is formed in the yoke and the through hole into which the insertion protrusion is inserted is described.

As shown in FIG. 11A, first, the magnet 1120 is disposed to insert the through hole 1121 of the magnet 1120 into the insertion protrusion 1111 of the yoke 1110. The plate 1130 is mounted on the upper surface of the magnet 1120 so as to contact the end of the insertion protrusion 1111.

Thereafter, as shown in FIG. 11B, the welder 1140 is positioned above the plate 1130 and below the yoke 1110. Then, while applying a predetermined voltage to the welder 1140, the welder 1140 is pressed toward the magnet 1120. Then, as shown in FIG. 11C, the end of the insertion protrusion 1111 of the yoke 1110 and the plate 1130 are welded (s).

On the other hand, when the insertion protrusion is formed in the plate, the through hole is formed in the magnet, as shown in Figure 12a, the yoke 1210 so that the insertion protrusion 1231 of the plate 1230 is inserted into the through hole 1221 of the magnet 1220. ), The magnet 1220 and the plate 1230 are sequentially stacked.

12B, the welder 1240 is positioned above the plate 1230 and below the yoke 1210. Then, while applying a predetermined voltage to the welder 1240, the welder 1240 is pressed toward the magnet 1220.

Then, as shown in FIG. 12C, the end of the insertion protrusion 1231 of the plate 1230 and the yoke 1210 are welded s'.

In this embodiment, the electric welding method has been described as an example, but in another embodiment, an arc welding method for melting a part welded through an arc or a laser welding method for melting a welded part using a laser may be used. .

As described above, the detailed description of the present invention has been made by the embodiments with reference to the accompanying drawings. However, since the above-described embodiments have only been described with reference to preferred examples of the present invention, the present invention is limited to the above embodiments. It is not to be understood that the scope of the invention should be understood by the claims and equivalent concepts described below.

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

2 is a cross-sectional view showing a speaker according to the present invention.

3 is an exploded cross-sectional view showing the main parts of the speaker according to the present invention in an exploded state.

4 is a conceptual view conceptually viewed from above of a speaker according to the present invention.

5 is an exploded cross-sectional view showing another embodiment of a speaker according to the present invention.

FIG. 6 is a conceptual view of FIG. 5 conceptually viewed from above.

Figure 7 is an exploded cross-sectional view showing another embodiment of a speaker according to the present invention.

8 is an exploded cross-sectional view showing an embodiment different from FIG. 7 of the speaker according to the present invention.

9A to 9C are conceptual views illustrating a method of manufacturing a speaker according to the present invention.

10A to 10C are conceptual views illustrating a speaker manufacturing method of another embodiment according to the present invention.

11A to 11C are conceptual views illustrating a speaker manufacturing method of still another embodiment according to the present invention.

12A to 12C are conceptual views illustrating a speaker manufacturing method according to another embodiment of FIG. 11 according to the present invention.

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

210: York

211: yoke-side fusion protrusion

220: magnet

230: Plate

231: plate side fusion protrusion

240: voice coil

250: diaphragm

Claims (6)

A magnet forming a magnetic field; A yoke coupled with the magnet; A plate coupled to the magnet and collecting a magnetic field generated by the magnet; A voice coil vibrating by generating a magnetic field that interferes with the magnetic field of the magnet by an electrical signal; And A diaphragm vibrating with the voice coil to generate sound pressure; Including; At least one of the yoke and the plate is welded to the magnet speaker. The method of claim 1, At least one of the yoke and the plate is provided with a fusion projection welded to the magnet speaker. A magnet having a through hole penetrating therein; Yoke and plate to collect the magnetic field generated in the magnet; A voice coil vibrating by generating a magnetic field that interferes with the magnetic field of the magnet by an electrical signal; And A diaphragm vibrating with the voice coil to generate sound pressure; Including; One of the yoke and the plate has an insertion protrusion inserted into the through hole, And the other one of the yoke and the plate is welded to the end of the insertion protrusion. speaker. Placing the magnet such that one side of the magnet contacts the yoke; Placing the plate such that the plate is in contact with the other surface of the magnet; And Welding the yoke and plate with the magnet; Characterized in that it comprises Method of manufacturing a speaker. Preparing a yoke and a plate on which fusion protrusions are formed; Placing the magnet such that one surface of the magnet contacts the fusion protrusion of the yoke; Placing the plate such that the fusion protrusion of the plate contacts the other surface of the magnet; And Welding the fusion protrusion of the yoke and the fusion protrusion of the plate and the magnet; Characterized in that it comprises Method of manufacturing a speaker. Preparing to form an insertion protrusion in one of the yoke and the plate; Inserting the insertion protrusion into a through hole of a magnet; And Welding the other one of the yoke and the plate with an end of the insertion protrusion; Characterized in that it comprises Method of manufacturing a speaker.
KR1020080101341A 2008-10-15 2008-10-15 Speaker and method for manufacturing thereof KR20100042176A (en)

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KR1020080101341A KR20100042176A (en) 2008-10-15 2008-10-15 Speaker and method for manufacturing thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080101341A KR20100042176A (en) 2008-10-15 2008-10-15 Speaker and method for manufacturing thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170353802A1 (en) * 2014-12-25 2017-12-07 Goertek Inc. Miniature loudspeaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170353802A1 (en) * 2014-12-25 2017-12-07 Goertek Inc. Miniature loudspeaker
US10123124B2 (en) * 2014-12-25 2018-11-06 Goertek Inc. Miniature loudspeaker

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