KR20110022656A - High power micro speaker - Google Patents

High power micro speaker Download PDF

Info

Publication number
KR20110022656A
KR20110022656A KR1020110013490A KR20110013490A KR20110022656A KR 20110022656 A KR20110022656 A KR 20110022656A KR 1020110013490 A KR1020110013490 A KR 1020110013490A KR 20110013490 A KR20110013490 A KR 20110013490A KR 20110022656 A KR20110022656 A KR 20110022656A
Authority
KR
South Korea
Prior art keywords
permanent magnet
voice coil
micro speaker
magnetic field
speaker
Prior art date
Application number
KR1020110013490A
Other languages
Korean (ko)
Inventor
박태복
Original Assignee
박태복
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 박태복 filed Critical 박태복
Priority to KR1020110013490A priority Critical patent/KR20110022656A/en
Publication of KR20110022656A publication Critical patent/KR20110022656A/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

The present invention relates to a high-power micro-speaker mounted in a small electronic product, and combines a permanent magnet magnetized in a horizontal direction to generate a magnetic field on the left side and the right side of the yoke, which serves as a passage for the magnetic line of the permanent magnet. Comprising a magnetic field to generate a spring terminal that can apply an electrical control signal from the outside to the voice coil that generates an electromagnetic force that generates a specific direction and intensity according to the electrical control signal transmitted to the outside while corresponding to the magnetic force line of the permanent magnet While being coupled, the vibration unit composed of a diaphragm capable of generating sound while vibrating in the vertical direction is combined.
In addition, the magnetic speaker and the vibrating unit is a micro speaker consisting of a frame through which the inside penetrates and a cover which closes one side opened to the frame.
The high power micro speaker according to the present invention having such a structure can increase the effective cross-sectional area of the permanent magnet by using the permanent magnet as it is without using a plate that changes the magnetization direction to the first floor in the permanent magnet. It is possible to realize high output micro speaker by increasing the effective coil of the coil, and to prevent the characteristic deterioration caused by the unidirectional vibration of the voice coil which generates the electromagnetic force during the high power progress, and to combine and combine the terminal spring configured to apply power to the voice coil. By combining a diaphragm capable of generating sound to the terminal spring can smoothly move up and down, it may be possible to implement a high-output micro speaker more efficiently.

Description

High Power Micro Speaker {High Power Micro Speaker}

The present invention relates to a high-power micro speaker mounted on a small electronic product, and designed to use the magnetic force line of the permanent magnet as it is without using a plate used to change the magnetic circuit of the permanent magnet that generates the magnetic field. It is about a speaker.

In addition, the present invention relates to a vibrating body composed of a diaphragm capable of generating sound by directly coupling the coil generating the electromagnetic force through the terminal spring and integrally combined with the diaphragm to prevent the disconnection of the coil and during vertical vibration in the axial direction The present invention relates to a micro speaker that improves output sound by constantly operating an irregular movement in a vertical direction through a terminal spring.

In general, a speaker is a device that converts an electrical signal into vibration of the air so that a person can feel the sound. The speaker can be classified into a dynamic type and an electrostatic type according to a principle and a method of converting an electrical signal into sound waves.

A small size micro speaker is mainly used in a mobile terminal. As shown in FIG. 1, a dynamic type micro speaker typically uses a voice coil 51 for generating electromagnetic force and a vertical permanent magnet 52 for generating magnetic force. The left hand law is used to operate the vertical permanent magnets 52 used at this time to collect the magnetic force of the vertical permanent magnets 52 in the upper layer surface to change the horizontal direction must use the plate 53. However, the plate 53 used at this time is paramagnetic is mainly used, but due to the inability to supply the electromagnetic force directly to the voice coil 51 from the vertical permanent magnets 52, there is no choice but to lose the original energy and vertical permanent When the thickness of the plate 53 for changing the direction of the magnetic force of the magnet 52 in the horizontal direction is increased to within 20 to 40% of the height of the vertical permanent magnet 52, which is normally used, the leakage path increases and the characteristic decreases. Because of the generated force, the effective magnetic force range with the coil generating the relative force is inevitably reduced. As a result, the deterioration of the characteristics of the used vertical permanent magnets 52 can not be avoided, and there is also a method of forming a double permanent magnet 54 on the side to overcome this problem. The plate-B 55 must be used to change the magnetic force of the permanent magnet 54.

In addition, the voice coil 51 attached to the diaphragm is fixed to the diaphragm 56 in order to connect to an external electrical signal, and disconnection frequently occurs due to the vibration of the diaphragm 56, and the strength of the diaphragm is uneven due to the adhesive. As a result, asymmetric vibrations may occur. In order to solve this problem, a "rectangle thin film speaker" of published 10-2010-0011199, which connects the voice coil 51 using a flexible circuit board FPCB 57, and a "high power diaphragm coupling" of registered patent No. 10-0930537 Structured micro speaker ", but this also uses flexible circuit board FPCB (51) and suspension, but there is a risk of unbalanced up and down and left and right unbalanced vibrations of two or more permanent magnets and two or more voice coils Due to this, there is a high possibility that the central portion of the suspension is short-circuited, and it is difficult to effectively cope with the deterioration of characteristics due to left and right unbalance.

Accordingly, the present invention has been proposed to solve the above problems, an object of the present invention is to generate a relative electromagnetic force by using the magnetic force line of the permanent magnet as it is without using a plate used to change the direction of the magnetic force line of the permanent magnet. This is to improve the output by increasing the effective magnetic flux with the voice coil.

Another object of the present invention is to connect directly to the spring terminal having elastic force and to bend one side of the spring terminal, unlike the conventional method of connecting the terminal using a flexible circuit board FPCB characteristics to minimize the asymmetric vibration of the slope during vertical operation to the maximum To minimize the imbalance.

In order to achieve the above object, the present invention forms a magnetic field generating a magnetic field of a certain intensity by combining the permanent magnet magnetized in the horizontal direction to generate a magnetic field on the left side and the right side of the yoke, which serves as a magnetic line passage of the permanent magnet And a spring terminal capable of applying an electrical control signal from the outside to the voice coil generating electromagnetic force generating a specific direction and intensity according to the magnetic control part transmitted to the outside while corresponding to the magnetic field, and vibrating in the vertical direction. While vibrating body composed of a diaphragm capable of generating sound is coupled. In addition, the magnetic field and the vibrating unit is a micro speaker consisting of a frame through which the inside penetrates and a cover for closing one side open to the frame.

The high power micro speaker according to the present invention having such a structure can greatly improve the effective cross-sectional area of the permanent magnet by using the permanent magnet as it is, without using a plate that changes the landing direction to one direction in the permanent magnet, and generates an electromagnetic force accordingly. It is possible to realize high output micro speaker by increasing the effective coil of the voice coil.The spring terminal is configured to apply power to the voice coil in order to prevent the characteristic deterioration due to the unidirectional vibration of the voice coil which generates electromagnetic force during the high output. Through the structure that combines the diaphragm that applies an electrical signal to the coil and can generate a sound can be smoothly up and down operation can be implemented more efficiently the high power micro speaker.

The high-power micro speaker according to the present invention having such a structure prevents deterioration of characteristics due to single vibration during vertical operation by applying an electrical signal to the coil through the spring terminal and coupling the diaphragm while maximizing the magnetic force of the permanent magnet to improve the output characteristics. And, as a result, a higher output sound effect can be obtained.

1 is a magnetic circuit configuration diagram of a conventional general speaker.
2 is a cross-sectional view according to the present invention.
3 is an exploded perspective view according to the present invention.
4 illustrates a magnetic circuit configuration according to the present invention.
5 is another embodiment according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In addition, the terms to be described later are defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or the operator, and the definition thereof describes a micro speaker having a high output diaphragm coupling structure according to the present invention. It should be made based on the contents throughout the specification.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

Figure 3 is an exploded perspective view according to the present invention by combining the permanent magnet 12 magnetized in the horizontal direction to generate a magnetic field on the left and right sides of the yoke 11, which serves as the magnetic line of the magnetic line passage of the permanent magnet 12 The magnetic field unit 10 for generating a magnetic field is formed.

At this time, the yoke 11 coupled to the permanent magnet 12 is provided with a fixing jaw 11a formed smaller than the thickness of the permanent magnet while determining the height of the permanent magnet 12 so that the magnetic force lines of the permanent magnet 11 are unilaterally oriented. The height of the can be fixed.

In addition, a spring terminal capable of applying an electrical control signal from the outside to the voice coil 21 for generating an electromagnetic force generating a specific direction and intensity according to the electrical control signal transmitted to the outside while corresponding to the magnetic force line of the permanent magnet 11 Combining the 22 constitutes a vibrating unit 20 composed of a diaphragm 23 capable of generating sound while vibrating in the vertical direction.

At this time, the spring terminal 22 coupled to the voice coil 21 generating the electromagnetic force is provided with a fan-shaped spring wave terminal 22a at both ends thereof symmetrically to reduce the load of the spring as much as possible in the vertical direction. Therefore, the influence on the diaphragm 23 which generates a sound more efficiently by reducing a spring load can be reduced.

At this time, the spring terminal 22 coupled to the voice coil 21 generating the electromagnetic force is separated into two separate power supply terminal blocks 22b for connecting an external electrical signal and a voice coil 21. The coil coupling terminal block 22c is provided to effectively transmit an electrical signal transmitted from the outside through the coil coupling terminal block 22c, which is a close point between the power supply terminal block 22b and the voice coil 21, Disconnection and durability can be improved.

At this time, the spring terminal 21 coupled to transmit an external electrical signal applies an electrical signal to the voice coil 21 and combines the diaphragm 23 to prevent eccentricity in order to prevent the deterioration of characteristics due to unidirectional vibration during up and down operation. The reinforcing rod 22d is provided so that the spring terminal block 22 is reinforced so as not to bend in the direction of the eccentric reinforcing reinforcing rod 22d based on one side, and electromagnetic force is generated in the voice coil 21 by an electrical signal applied to the outside. Therefore, the amount of left and right eccentricity can be reduced during up and down operation.

At this time, the spring terminal 21 coupled to transmit an external electrical signal applies an electrical signal to the voice coil 21 and combines the diaphragm 23 to prevent eccentricity in order to prevent the deterioration of characteristics due to unidirectional vibration during up and down operation. The reinforcing rod 22d is provided so that the spring terminal block 22 is reinforced so as not to bend in the direction of the eccentric reinforcing reinforcing rod 22d based on one side, and electromagnetic force is generated in the voice coil 21 by an electrical signal applied to the outside. Therefore, the amount of left and right eccentricity can be reduced during up and down operation.

In this case, the diaphragm 23 capable of generating the sound coupled to the vibrator 20 may include a protrusion hole 23a to assist in the smooth operation of the diaphragm 23 during up and down movement, thereby effectively generating sound.

In addition, the magnetic field part 10 and the vibrator part 20 are coupled to each other by a frame 32 through which the inside penetrates and a cover 32 that closes one side opened to the frame 31. To complete the micro speaker.

At this time, the coupled frame 31 is provided with a movement clearance 31b in left and right symmetry so that the spring terminal 22 can be directly connected with the movement passage 31a in the left and right symmetry so as to easily move to the lower side.

At this time, the combined cover 32 is provided with a plurality of external transmission holes (32a) for effectively transmitting the sound generated in the diaphragm 23 to the outside.

4 illustrates the configuration of the magnetic circuit according to the present invention, in which the magnetic field is generated by combining the permanent magnet 12 generating a magnetic field on the left and right sides of the yoke 11 serving as a magnetic line passage of the permanent magnet 12. The magnetic field which forms the magnetic field part 10 which generates the magnetic field of a certain intensity by the permanent magnet 12 magnetized in the horizontal direction, and started the "N" pole of the left permanent magnet 12a of the magnetic part 10 is a yoke. It moves along the left side of (11) and moves to the "S" pole of the left permanent magnet 12a to complete the magnetic force line, and the magnetic field starting from the right permanent magnet 12b and the "N" pole is It moves along the right side and moves to the "S" pole of the right permanent magnet 12b to complete the magnetic force line.

After placing the voice coil 21 generating the electromagnetic force in the gap between the completed lines of magnetic force, when an external electrical signal "+ A" is applied to the voice coil 21, the voice coil 21 generates an electromagnetic force and the left hand of the Fleming By the law, the voice coil 21 generates a force in the downward direction so that the force is transmitted to the spring terminal 22 coupled to the voice coil 21 and the fan-shaped wave terminal block 22a of the spring terminal 22 extends. And the diaphragm 23 coupled with the spring terminal 22 is directed downward.

In addition, when the external electrical signal "-A" is applied to the voice coil 21, the voice coil 21 is generated in the opposite direction to the electromagnetic force generated when the electrical signal "+ A", and according to the left hand law of Fleming, the voice coil ( 21 is a force generated in the upward direction, the force is transmitted to the spring terminal 22 coupled to the voice coil 21, the fan-shaped wave terminal block 22a of the spring terminal is extended and the vibration plate coupled to the spring terminal 22 23 moves in the upward direction.

Thus, by repeating the external electrical signals " + A " and " -A " to the voice coil 21, the voice coil 21 operates in the up and down direction, and the operated force is transmitted to the diaphragm 23 through the spring terminal 21. By operating up and down to cause the vibration of the air to generate sound waves to feel the sound in the human ear.

In addition, Figure 5 is a cross-sectional view showing a further embodiment according to the present invention.

While the invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the present invention may be variously modified and changed without departing from the spirit or the scope of the invention provided by the following claims. It will be appreciated that those skilled in the art can easily know.

10: magnetic field part 11: yoke 11a: jaw
12: permanent magnet 12a: left permanent magnet 12b: right permanent magnet
20: Vibration unit 21: Voice coil 22: Spring terminal
22a: wave terminal 22b: power supply terminal block 22c: coil coupling terminal block
22d: eccentric reinforcement 23: diaphragm 23a: protrusion hole
31: frame 31a: moving passageway 31b: moving gap
32: cover 32a: external transmission hole
51: voice coil 52: vertical permanent magnet 53: plate
54: double permanent magnet 55: plate-B 56: diaphragm
57: flexible printed circuit board FPCB

Claims (8)

A yoke 11 serving as a magnetic line passage; Permanent magnets 12 magnetized in a horizontal direction to generate a magnetic field on the left and right sides of the yoke 11; A magnetic field part 10 formed of the yoke 11 and the permanent magnet 12 to generate a magnetic field of a predetermined intensity;
A voice coil 21 for generating an electromagnetic force corresponding to the magnetic field part 10; A spring terminal 22 which is easy to move up and down in a vertical direction coupled to the voice coil 21; Vibration unit 20 consisting of a diaphragm 23 for generating a sound coupled to the spring terminal 22;
A frame 31 through which the magnetic field part 10 and the vibrator part 20 are coupled; Micro speaker coupled to the cover 32 for closing one side open to the frame 31 The method of claim 1,
Micro speaker comprising a fixed jaw (11a) formed smaller than the thickness of the permanent magnet while determining the height of the permanent magnet (12) of the yoke (11) serving as a magnetic line passage. The method of claim 1
The spring terminal 22 coupled to the voice coil 21 generating the electromagnetic force has a fan-shaped spring wave terminal 22a at both ends thereof symmetrically so as to reduce the load of the spring as much as possible in the vertical direction. Micro speaker made with. The method of claim 3
The spring terminal 22 has two separate power supply terminal blocks 22b for connecting external electrical signals and two separate coil coupling terminal blocks 22c for connecting the voice coil 21 for generating electromagnetic force. Micro speaker characterized in that. The method of claim 3
The spring terminal 22 is provided with an anti-eccentric reinforcement 22d for applying an electrical signal to the voice coil 21 and coupling the diaphragm 23 to prevent deterioration of characteristics due to unidirectional vibration during up and down operation. Micro speaker.
The method of claim 1
Micro-speaker, characterized in that the diaphragm 23 that can generate a sound coupled to the vibrating portion 20 has a projection hole (23a) to effectively generate the sound while helping the smooth operation during up and down operation.
The method of claim 1
The combined frame 31 is characterized in that the spring terminal 22 is provided with a movement clearance 31b in left and right symmetry so as to be connected to the lower and left symmetrical so as to be connected to the moving passage 31a directly below. Micro speaker.
The method of claim 1
The combined cover 32 has a plurality of external transmission holes (32a) for effectively transmitting the sound generated in the diaphragm (23) to the outside.
KR1020110013490A 2011-02-16 2011-02-16 High power micro speaker KR20110022656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110013490A KR20110022656A (en) 2011-02-16 2011-02-16 High power micro speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110013490A KR20110022656A (en) 2011-02-16 2011-02-16 High power micro speaker

Publications (1)

Publication Number Publication Date
KR20110022656A true KR20110022656A (en) 2011-03-07

Family

ID=43930951

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110013490A KR20110022656A (en) 2011-02-16 2011-02-16 High power micro speaker

Country Status (1)

Country Link
KR (1) KR20110022656A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2701402A1 (en) * 2012-08-24 2014-02-26 Em-tech. Co., Ltd. Suspension for high power micro speaker, and high power micro speaker having the same
EP2725820A1 (en) * 2012-10-29 2014-04-30 Em-tech. Co., Ltd. Vibration module for sound transducer
US9473837B2 (en) 2012-10-25 2016-10-18 Em-Tech. Co., Ltd. Sound transducer with ventilation structure
US9900703B2 (en) 2012-08-23 2018-02-20 Em-Tech. Co., Ltd. Suspension for high power micro speaker and high power micro speaker having the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9900703B2 (en) 2012-08-23 2018-02-20 Em-Tech. Co., Ltd. Suspension for high power micro speaker and high power micro speaker having the same
EP2701402A1 (en) * 2012-08-24 2014-02-26 Em-tech. Co., Ltd. Suspension for high power micro speaker, and high power micro speaker having the same
US9473837B2 (en) 2012-10-25 2016-10-18 Em-Tech. Co., Ltd. Sound transducer with ventilation structure
EP2725820A1 (en) * 2012-10-29 2014-04-30 Em-tech. Co., Ltd. Vibration module for sound transducer
CN103796140A (en) * 2012-10-29 2014-05-14 易音特电子株式会社 Vibration module for sound transducer
CN103796140B (en) * 2012-10-29 2017-07-28 易音特电子株式会社 Vibration module for sonic transducer

Similar Documents

Publication Publication Date Title
US8223996B2 (en) Moving armature receiver
KR100930537B1 (en) Micro speaker including a structure of uniting an vibration plate for high power
KR101180486B1 (en) Linear vibration motor
CN102497611B (en) Bone conduction speaker driver with reduced volume
JP2008252871A5 (en)
JP5032708B2 (en) Multi-function micro speaker
WO2018170939A1 (en) Moving magnet-type loudspeaker
US11206492B2 (en) Screen sounding exciter and electronic device
CN209267624U (en) Screen vibration-sound generating device and electronic product
KR20110022656A (en) High power micro speaker
JP2020150542A (en) Bone conduction speaker
CN201629840U (en) Structure of oscillation sounder
WO2020125789A1 (en) Screen vibration and sound generation device and electronic product
CN105187987B (en) A kind of magnetic driving mechanism and the receiver including the magnetic driving mechanism
KR20160067344A (en) Multi-Function Microspeaker
EP2432250A1 (en) Multifunctional micro speaker
CN207573627U (en) A kind of vibrating diaphragm and the acoustical generator including the vibrating diaphragm
CN209267625U (en) Screen vibration-sound generating device and electronic product
KR20180000228A (en) Apparatus with magnetic brake for generating vibration in portable device
KR100965740B1 (en) Ultra slim type acoustic transducer
KR100987464B1 (en) Directivity type speaker
KR101131941B1 (en) Micro speaker reinforced solidarity of vibration department
JP2002315098A (en) Electroacoustic transducer
KR20120005288A (en) Multi-function micro-speaker
US20190246212A1 (en) Speaker

Legal Events

Date Code Title Description
A201 Request for examination
N231 Notification of change of applicant
E902 Notification of reason for refusal
E601 Decision to refuse application