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WO2012005433A2 - Micro-haut-parleur multifonctions - Google Patents

Micro-haut-parleur multifonctions Download PDF

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Publication number
WO2012005433A2
WO2012005433A2 PCT/KR2011/002565 KR2011002565W WO2012005433A2 WO 2012005433 A2 WO2012005433 A2 WO 2012005433A2 KR 2011002565 W KR2011002565 W KR 2011002565W WO 2012005433 A2 WO2012005433 A2 WO 2012005433A2
Authority
WO
WIPO (PCT)
Prior art keywords
suspension
yoke
frame
fixed
permanent magnet
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2011/002565
Other languages
English (en)
Korean (ko)
Other versions
WO2012005433A3 (fr
Inventor
김규동
홍진혁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DONGGUAN BAOXING ELECTRONICS Co Ltd
RONGCHENG BAOXING ELECTRONIC CO Ltd
TIANJIN BSE ELECTRONICS CO Ltd
BSE Co Ltd
Original Assignee
DONGGUAN BAOXING ELECTRONICS Co Ltd
RONGCHENG BAOXING ELECTRONIC CO Ltd
TIANJIN BSE ELECTRONICS CO Ltd
BSE Co Ltd
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 DONGGUAN BAOXING ELECTRONICS Co Ltd, RONGCHENG BAOXING ELECTRONIC CO Ltd, TIANJIN BSE ELECTRONICS CO Ltd, BSE Co Ltd filed Critical DONGGUAN BAOXING ELECTRONICS Co Ltd
Publication of WO2012005433A2 publication Critical patent/WO2012005433A2/fr
Publication of WO2012005433A3 publication Critical patent/WO2012005433A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04R9/06—Loudspeakers
    • H04R9/066—Loudspeakers using the principle of inertia
    • 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
    • H04R2400/07—Suspension between moving magnetic core and housing
    • 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

Definitions

  • the present invention relates to a multi-function micro speaker, and more particularly, having a suspension formed with a central portion higher than an edge portion, and by placing parts including weights thereon, weight weight can be easily increased to improve vibration force and vibration.
  • a multifunctional micro speaker capable of effectively controlling the variation of frequency.
  • a speaker is a device that converts an electrical signal into a voice signal.
  • Micro-speakers are mainly small speakers for small sized audio equipment such as mobile phones, laptops, MP3 players, earphones, etc., and portable audio equipment that is in great demand in recent years.
  • the recent electronic products employing a micro speaker especially a mobile communication device such as a mobile phone is essentially provided with a configuration for generating a vibration signal.
  • recent mobile communication devices have a configuration for generating a vibration signal that is frequently used instead of an incoming call signal or a vibration signal that confirms an input state in a touch screen method for directly inputting information on a screen. .
  • the multifunctional micro speaker of the present invention refers to an additional micro speaker having a configuration for generating a vibration signal in an existing micro speaker having a configuration for generating sound.
  • the multifunctional micro speaker is variously called a multifunctional actuator or a multifunctional electro-acoustic transducer.
  • the multifunctional micro-speaker of the conventional structure is a structure which acquires a vibration by resonating the vibrating body supported by the plate-shaped spring.
  • Such a conventional multifunctional micro speaker has a voice coil in a magnetic circuit on the side of a diaphragm, also called a vibration plate, which generates sound when a current for a voice signal is applied, and generates vibration when a current for a vibration signal is applied to the voice coil.
  • the system is adopted.
  • the conventional multifunctional micro speaker 100 includes a case 110, a vibration generating plate 101 for sound generation, a voice coil 102, a permanent magnet 104 and a plate 103 in which an N pole and an S pole are disposed in an up and down direction. And a yoke 105, a weight 106, an upper suspension 107, and a lower suspension 108. Current is applied to the voice coil 102 via the lead line a 114 and the lead line b 115.
  • the voice coil 102 has its upper end fixed to the lower surface of the diaphragm, and extends downward while being wound.
  • the plate 103 is fixed to the upper surface of the permanent magnet 104.
  • the permanent magnet 104 forms a speaker magnetic circuit together with the plate 103 and the yoke 105.
  • the weight 106 also called a mass or weight, constitutes a vibrating body together with the permanent magnet 104, the plate 103, and the yoke 105.
  • the vibrating body is elastically supported by the case 110 by the upper suspension 107 and the lower suspension 108.
  • the magnetic force lines from the N pole of the permanent magnet 104 form a magnetic field that passes through the plate 103, the voice coil 102, and the yoke 105 in turn to the S pole of the permanent magnet 104.
  • the electromagnetic force is generated in the voice coil 102, it interacts with the magnetic flux by the magnetic circuit, and the diaphragm 101 fixed to the voice coil 104 is vibrated to function as a speaker for outputting sound.
  • the conventional multifunctional micro speaker having the conventional structure described above has a large outer diameter when the weight of the weight is required due to the position of the suspensions 107 and 108 and the structure in which weights are coupled to them. There is a problem that must be done.
  • An object of the present invention is to solve the above-described problems, and by providing a suspension having a central portion higher than the edge and fixing the edge to the frame, it is easy to increase and adjust the weight weight without increasing the overall outer diameter.
  • the present invention provides a multifunctional micro speaker capable of improving vibration force and effectively controlling the variation of vibration frequency.
  • the multi-function micro speaker of the present invention includes a frame: an edge portion fixed to the frame, a center portion positioned higher than the edge portion, and an inclined portion having elasticity connecting the edge portion and the center portion.
  • Suspension provided; A yoke fixed to an upper surface of a central portion of the suspension and provided with a receiving groove; A weight part provided on an outer circumference of the yoke; Permanent magnet provided in the receiving groove of the yoke; A plate coupled to an upper surface of the permanent magnet; And a diaphragm having an edge portion fixed to the upper portion of the frame; and a voice coil fixed to a lower surface of the diaphragm.
  • the edge portion of the suspension is substantially circular in its outer shape, the center portion is flat, and the inclined portion has a plurality of penetrating portions formed along the circumferential direction.
  • the external shape formed by the said suspension is substantially the shape of a truncated cone.
  • the frame may include a lower frame in which the suspension is fixed, an intermediate frame in which the diaphragm is fixed, and a cover frame covering the diaphragm.
  • the yoke and the weight portion is preferably formed integrally.
  • the permanent magnet is located above the center of the suspension
  • the weight portion is preferably located above the inclined portion of the suspension.
  • the multifunctional micro-speaker according to the present invention, it is possible to obtain the effect that the weight weight can be increased without interference with other components.
  • FIG. 1 is a schematic cross-sectional view of a conventional multifunctional micro speaker
  • FIG. 2 is a schematic exploded perspective view of a multifunctional micro speaker of an embodiment according to the present invention.
  • FIG. 3 is a schematic cross-sectional view of the assembled state of the multi-function micro-speaker of FIG.
  • FIG. 2 is a schematic cross-sectional view of a multifunction micro speaker of an embodiment according to the present invention
  • FIG. 3 is a schematic exploded perspective view of the multifunction micro speaker of FIG. 2.
  • the multifunctional micro speaker 1 of this embodiment is mainly used in a mobile communication terminal such as a mobile phone and a small device such as a PMP, and has a sound generating function and a vibration generating function as a signal at the same time.
  • the multifunction micro speaker 1 includes a frame 10, a suspension 20, a yoke 30, a weight 40, a permanent magnet 50, a plate 60, a diaphragm 70, and a voice. It comprises a coil (80).
  • the frame 10 is usually made of plastic, and forms various external components of the speaker and is fixed therein.
  • the frame 10 has a flat cylindrical shape as a whole.
  • the frame 10 is composed of a lower frame 12, an intermediate frame 14, and a cover frame 16.
  • the intermediate frame 14 and the lower frame 12 may be integrally formed as necessary.
  • the edge portion 22 of the suspension 20 is fixed to the inner bottom surface of the lower frame 12.
  • the edge portion 72 of the diaphragm 70 is fixed to the intermediate frame 14.
  • the intermediate frame 14 is provided with a pair of terminals 15.
  • the voice coil 80 is electrically connected to the terminal 15.
  • An external electric wire is connected to the terminal 15, and an external electric signal is transmitted to the voice coil 80.
  • the cover frame 16 is a shape covering the outside of the diaphragm 70 as a whole, and is coupled to the outer edge of the intermediate frame 14.
  • the outer circumferential portion of the diaphragm 70 is sandwiched between the outer circumferential portion of the cover frame 16 and the outer circumferential portion of the intermediate frame 14.
  • the suspension 20 is provided below the inside of the frame 10.
  • the suspension 20 consists of an edge portion 22, a central portion 24, and an inclined portion 26.
  • the edge portion 22 is fixed to the inner bottom surface of the lower frame 22.
  • the outer shape of the edge portion 22 is substantially circular.
  • circular means not a mathematically perfect circle, but a shape that is usually seen as a circle.
  • the edge portion may be a variety of shapes, such as oval or track shape, as well as a circular shape, or may be a shape such as a quadrangular corner portion arced as necessary.
  • the central portion 24 is located higher than the position of the edge portion 22.
  • the central portion 24 is flat.
  • the shape of the central portion 24 is substantially the shape of a circle.
  • the edge portion 22 and the central portion 24 provided to have a height difference are connected to each other by the inclination portion 26.
  • the inclined portion 26 is an elastic member.
  • the term 'elasticity' refers to a property of changing volume and shape when an external force is applied to the object, and then returning to the shape of Bondi by removing the force. Can be divided.
  • the inclined portion 26 is mainly related to the shape elasticity.
  • the yoke 30 fixed to the upper surface of the center part 24 is elastically supported by the suspension 20.
  • the inclined portion 26 is provided with a plurality of through portions 28 formed long in the circumferential direction.
  • the edge portion 22, the central portion 24 and the inclined portion 26 are formed of an integral member. Therefore, not only the inclination part 26, but also the edge part 22 and the center part 24 are members which carried elasticity.
  • the edge portion, the central portion, the inclined portion may be formed as a separate member, respectively, instead of being integrally formed as necessary, may be configured to be combined with each other, or any two members and one member is a separate member It may be configured to be combined with each other.
  • the suspension 20 when the suspension 20 is viewed as a whole, its outer contour is similar to the shape of the truncated cone, where the top is removed from the cone.
  • Components such as the yoke 30 fixed to the upper surface of the central portion 26 are elastically supported by the suspension 20, as if supported on the upper end of the coil-shaped spring, and is input to the voice coil 80. It vibrates according to the signal.
  • the yoke 30 is fixed to the upper surface of the central portion 24 of the suspension 20.
  • the inside of the yoke 30 is provided with a recessed receiving groove (32).
  • the yoke 30 is made of a magnetically permeable material.
  • the weight portion 40 is provided on the outer circumferential portion of the yoke 30.
  • the weight portion 40 may also be called a weight, mass, weight, or the like. By adjusting the weight of the weight 40, the degree of vibration of the yoke 30 or the like can be adjusted.
  • the weight portion 40 is formed integrally with the yoke 30.
  • the weight portion may be manufactured as a member separate from the yoke and coupled to the outer circumference of the yoke.
  • the weight portion may be formed by combining two or more members.
  • the permanent magnet 50 is formed in a disc shape so as to correspond to the receiving groove 32 of the yoke 30.
  • the permanent magnet 50 is fixed to the inner bottom surface of the yoke 30.
  • the plate 60 has a diameter substantially the same as that of the permanent magnet 50 and is fixed to the upper surface of the permanent magnet 50.
  • Plate 60 is made of a material that allows magnetic force to pass through.
  • the permanent magnet 50 and the plate 60 are fixed to be spaced apart from the inner wall of the yoke 30.
  • a space is formed between the outer surface of the permanent magnet 50 and the plate 60 and the inner wall of the yoke 30, and the lower portion of the voice coil 80 is located in this space.
  • the permanent magnet 50, the plate 60 and the yoke 30 constitute a speaker magnetic circuit. That is, the magnetic flux generated in the permanent magnet 50 creates a magnetic flux path (path) entering the yoke 30 via the plate 60.
  • the diaphragm 70 vibrates up and down to produce a sound pressure that can be heard by a person.
  • the edge portion 72 of the diaphragm 70 is fixed to the frame 10 as described above.
  • the diaphragm 70 is usually made of a high molecular compound.
  • the diaphragm 70 of this embodiment is divided into an inner portion 74 located inside and an outer portion 76 located outside based on a boundary portion where the upper end of the voice coil 80 is coupled.
  • the inner portion 74 and the outer portion 76 each have a dome shape, and the boundary portion is flat.
  • the diaphragm 70 can be variously changed in specific shape, material, and thickness.
  • the voice coil 80 is fixed to the lower surface of the diaphragm 70.
  • the upper end of the voice coil 80 is fixed to the lower surface of the boundary of the diaphragm 70.
  • the voice coil 80 is formed by winding a conductive wire in an upward direction.
  • the voice coil 80 is electrically connected to the terminal 15 provided in the frame 10.
  • the voice coil 80 receives a current from the outside through the terminal 15.
  • the lower portion of the voice coil 80 is located in the space between the permanent magnet 50 and the plate 60 and the yoke 30.
  • a high frequency current flows through the voice coil 80, the magnetic coil is moved upward and downward due to a mutual relationship with the magnetic field generated by the permanent magnet 50.
  • the diaphragm 70 coupled to the voice coil 80 vibrates to generate sound.
  • the multifunction micro speaker 1 of the present embodiment has a suspension having a shape in which a center portion 24 is higher than an edge portion 22, and the center portion 24 and the edge portion 22 are connected to an inclined portion 26 having elasticity ( 20), by placing the yoke 30, the permanent magnet 50, the plate 60 and the weight 40 in the upper portion of the suspension 20, the weight 40 is interfered with other components
  • the effect is that it is possible to increase the weight without.
  • the yoke 30 is fixed to the central part 24 of the suspension 20, and the weight part 40 is provided in the outer peripheral part of the yoke 20. Accordingly, the weight portion 40 is positioned above the inclined portion 26 of the suspension 20, but is spaced apart from the inclined portion 26. For this reason, the weight part 40 has the effect that it is possible to increase a weight by increasing a volume down toward the inclination part 26, even if it does not increase the diameter. As a result, it is possible to increase the weight of the weight portion 40 without increasing the outer diameter of the micro speaker and without causing interference with other components.

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

Abstract

La présente invention concerne un micro-haut-parleur multifonctions comprenant : une armature ; une suspension comprenant un bord fixé à l'armature, une partie centrale située plus haut que le bord et une partie en pente reliant la partie centrale au bord et présentant une élasticité ; un étrier fixé à la surface supérieure de la partie centrale de la suspension et comprenant un évidement récepteur ; un lest placé à la périphérie de l'étrier ; un aimant permanent disposé dans l'évidement récepteur de l'étrier ; une plaque couplée à la surface supérieure de l'aimant permanent ; une plaque de vibration dont l'un des bords est fixé à la partie supérieure de l'armature ; et une bobine acoustique fixée à la surface inférieure de la plaque de vibration.
PCT/KR2011/002565 2010-07-08 2011-04-12 Micro-haut-parleur multifonctions Ceased WO2012005433A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100065952A KR20120005288A (ko) 2010-07-08 2010-07-08 다기능 마이크로 스피커
KR10-2010-0065952 2010-07-08

Publications (2)

Publication Number Publication Date
WO2012005433A2 true WO2012005433A2 (fr) 2012-01-12
WO2012005433A3 WO2012005433A3 (fr) 2012-03-01

Family

ID=45429154

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/002565 Ceased WO2012005433A2 (fr) 2010-07-08 2011-04-12 Micro-haut-parleur multifonctions

Country Status (3)

Country Link
KR (1) KR20120005288A (fr)
CN (2) CN202514066U (fr)
WO (1) WO2012005433A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102946580A (zh) * 2012-11-15 2013-02-27 深圳市盛泰兴业科技有限公司 一种降频器
KR101775427B1 (ko) * 2016-06-30 2017-09-07 이성수 스피커 유닛
CN109379679B (zh) * 2018-09-30 2021-10-19 瑞声科技(新加坡)有限公司 发声器件

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4592088B2 (ja) * 2005-05-30 2010-12-01 シチズン電子株式会社 振動体
KR100962594B1 (ko) * 2007-11-13 2010-06-11 에스텍 주식회사 다기능 스피커
KR100932754B1 (ko) * 2007-12-12 2009-12-21 에스텍 주식회사 다기능 스피커

Also Published As

Publication number Publication date
CN202514066U (zh) 2012-10-31
WO2012005433A3 (fr) 2012-03-01
CN102316401A (zh) 2012-01-11
KR20120005288A (ko) 2012-01-16

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