KR101673297B1 - Suspension for speaker and method of making the same - Google Patents

Suspension for speaker and method of making the same Download PDF

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Publication number
KR101673297B1
KR101673297B1 KR1020150087606A KR20150087606A KR101673297B1 KR 101673297 B1 KR101673297 B1 KR 101673297B1 KR 1020150087606 A KR1020150087606 A KR 1020150087606A KR 20150087606 A KR20150087606 A KR 20150087606A KR 101673297 B1 KR101673297 B1 KR 101673297B1
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KR
South Korea
Prior art keywords
film
conductive pattern
suspension
rim portion
voice coil
Prior art date
Application number
KR1020150087606A
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Korean (ko)
Inventor
김정곤
유현영
김준호
Original Assignee
주식회사 비에스이
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Application filed by 주식회사 비에스이 filed Critical 주식회사 비에스이
Priority to KR1020150087606A priority Critical patent/KR101673297B1/en
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Publication of KR101673297B1 publication Critical patent/KR101673297B1/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider
    • 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
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • 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

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

Abstract

The present invention relates to a suspension for a speaker and a method of manufacturing the same, which can reduce the thickness and reduce manufacturing cost due to a simple structure by forming a pattern using a transferring method. A suspension according to the present invention includes: a first film having a cutting portion for connecting a terminal and a pattern; A second film having a cutting portion for connecting the terminal and the pattern, and a cutting portion for connecting the voice coil and the pattern; And a conductive pattern embedded between the first film and the second film to transmit the audio signal of the terminal to the voice coil, wherein the suspension for the speaker includes a first rim supported by the frame and supported by the frame, And a bridge portion connecting the first rim portion and the second rim portion, wherein the first rim portion is provided with an external pad for connecting the terminal and the conductive pattern to the first rim portion, And an inner pad for connecting the voice coil and the conductive pattern is disposed in the second rim portion. The outer pad and the inner pad are connected to each other through a conductive pattern embedded in the film of the bridge and protected.

Description

Technical Field [0001] The present invention relates to a suspension for a speaker,

The present invention relates to a suspension for a speaker, and more particularly, to a suspension for a speaker and a method of manufacturing the same, which can reduce a thickness and a manufacturing cost by a simple structure by forming a pattern using a transferring method.

In general, a speaker is a type in which a driving source vibrates a diaphragm to generate sound, and a dynamic speaker, an electrostatic speaker, and a piezoelectric speaker (film type speaker) are classified according to a driving method of vibrating the diaphragm.

The most widely used dynamic method is also referred to as a moving coil type and basically includes a magnetic circuit composed of a magnet, a plate and a yoke and a magnetic circuit composed of a voice located in a gap of the magnetic circuit A voice coil, and a diaphragm that vibrates according to the motion of the voice coil. When a current flows through the voice coil, the voice coil is moved by the interaction with the magnetic field formed by the magnet. At this time, the vibration plate vibrates according to the movement of the voice coil, thereby generating sound.

1 is a schematic exploded perspective view of a conventional micro speaker 100. The micro speaker 100 includes a frame 110, a yoke 120, a permanent magnet 130, a plate 140, a diaphragm 150, a suspension 160, A voice coil 170, a cover 180, and a terminal 190.

Referring to FIG. 1, a frame 110 is a member that forms an outer shape of a micro speaker, and other parts are mounted, and the magnetic circuit is composed of a yoke 120, a permanent magnet 130, and a plate 140.

The diaphragm 150 is distinguished by a dome 152 of the inner portion and an edge 154 of the outer portion with respect to the boundary portion 156. The edge 154 of the outer portion and the dome 152 of the inner portion are integrated . The inner portion and the outer portion of the diaphragm 150 differ from each other mainly in the reproduced band. Since the outer part is made of a soft material, the sound of the low sound is mainly reproduced when vibrating, and the inner part is made of a relatively hard material, so that the sound of the high sound range is mainly reproduced.

The suspension 160 plays a role of preventing the diaphragm 150 from vibrating properly only in the vertical direction and not moving in the lateral direction. The lower side of the boundary portion 156 of the diaphragm 150 and the suspension 160 are fixed to each other and the outer frame is fixed to the frame 110 like the diaphragm. The center portion of the suspension 160 is vertically penetrated. That is, the suspension 160 is empty at the lower portion of the inner portion 152 of the vibration plate 150. A plurality of long and curved grooves are formed in the suspension 160 located at the lower portion of the outer portion 154 of the diaphragm. These grooves are formed in order to allow the suspension 160 to vibrate in the up- do.

2, the suspension 160 used in the conventional micro speaker is formed by depositing a copper layer 164 on both sides of a base film 165 made of polyimide (PI) And then a cover layer 167 and a base layer 161 of PEN (Poly Ethylene Naphthalate) were adhered to each other through the adhesive 162 and 166 after forming a plating layer 163.

Since the conventional suspension 160 is formed by patterning through the etching after the expensive PI film 165 is applied and the copper layer 164 is formed in at least two stages, the number of the stacked layers is large, There is a limit in reducing slimness, a production cost (manufacturing cost) is high, and a production amount per hour is deteriorated due to a complicated structure.

KR 10-1363522 B1 KR 10-1475342 B1

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. It is an object of the present invention to provide a method and apparatus for reducing the thickness of a pattern by using a transferring method, And a method of manufacturing the same.

According to an aspect of the present invention, there is provided a suspension including: a first film having a cutting portion for connecting a terminal and a pattern; A second film having a cutting portion for connecting the terminal and the pattern, and a cutting portion for connecting the voice coil and the pattern; And a conductive pattern embedded between the first film and the second film to transmit the audio signal of the terminal to the voice coil.

The suspension for a speaker includes a first rim portion supported on a frame and supported by the frame, a second rim portion to which a voice coil is attached while forming an interface between an edge and a dome and a bridge portion connecting the first rim portion and the second rim portion, Wherein an outer pad for connecting the terminal and the conductive pattern is disposed in the first rim portion and an inner pad for connecting the voice coil and the conductive pattern is disposed in the second rim portion, And the inner pads are connected to each other through a conductive pattern embedded in the film of the bridge.

The speaker suspension has a structure in which a second film of PEN material and a first film layer of a pressure-sensitive adhesive, a tin plating layer, a copper layer, an adhesive, a tin plating layer, and a PEN material are sequentially stacked.

According to another aspect of the present invention, there is provided a method of manufacturing a suspension, comprising: cutting and preparing a first film to which a pressure-sensitive adhesive is attached; Preparing a conductive pattern having a plating layer on the metal layer; Transferring the conductive pattern to the adhesive side of the first film to bond the first film and the conductive pattern; Bonding the first film with a second film to which the adhesive is adhered with the conductive pattern interposed therebetween; And a second edge portion to which the voice coil is attached, and a bridge portion shape connecting the first edge portion and the second edge portion, the first edge portion being seated on the frame, So as to complete the suspension. The first film and the second film are made of a film of PEN, the metal layer is made of copper, and the plated layer is made of tin plating.

The suspension according to the present invention is advantageous for slim speaker application because the copper layer is only one step and the patterns are formed by the transferring method and the number of stacked layers is small. The manufacturing cost can be reduced by about 50% The production amount per unit time can be greatly increased.

Further, according to the present invention, there is no risk of corrosion or disconnection because the conductive pattern is embedded between the laminated films and the conductive pattern is not exposed, so that reliability can be improved and the deterioration of the characteristics is not caused even when used for a long time have.

1 is an exploded perspective view showing a conventional micro speaker,
2 is a view showing a conventional suspension,
3 is an exploded perspective view showing a micro speaker to which the present invention is applied,
4 is an exploded perspective view of a suspension according to an embodiment of the present invention,
5 is a front and rear view of a suspension according to an embodiment of the present invention,
6 is an exploded perspective view of a suspension according to another embodiment of the present invention,
7 is a front and rear view of a suspension according to another embodiment of the present invention,
8 is a flowchart showing a manufacturing procedure of a suspension according to the present invention,
9 is an AA cross-sectional view of a suspension manufactured in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings. The following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention.

3 is a schematic exploded perspective view of a micro speaker to which the present invention is applied. The micro speaker has a frame 340, a magnetic circuit 350 composed of a yoke 352, a permanent magnet 354 and a plate 356, A voice coil 330, a cover 360, and a terminal 370, each of which is composed of a dome 324 and an edge 322 with the voice coil 310 interposed therebetween.

3, the frame 340 has a diaphragm assembly on the upper side and a magnetic circuit on the lower side to support the outer shape of the micro speaker. The diaphragm assembly has a dome 324 and an outer side In the embodiment of the present invention, the edge 322 of the outer portion is separated from the dome 324 of the inner portion, and the suspension 310 is disposed between the edge 322 and the inner edge. The diaphragm assembly of the separated structure differs in the material of the outer part (edge) and the inner part (dome) so that the outer part plays mainly the sound of the low sound level and the inner part is the relatively hard material, Playback.

FIG. 4 is an exploded perspective view of a suspension according to an embodiment of the present invention, and FIG. 5 is a front view and a rear view of a suspension according to an embodiment of the present invention.

The suspension 310 according to an embodiment of the present invention includes a first film 310-1 having a cutting portion B for connecting the terminal 370 and the pattern 310-3, , A second film 310-2 having a cutting portion B for connecting the terminal and the pattern, a cutting portion A for connecting the voice coil 330 and the pattern 310-3, And a conductive pattern 310-3 for transferring the audio signal of the terminal 370 to the voice coil 330, which is contained between the first film 310-1 and the second film 310-2. As the material of the first film 311 and the second film 312, various kinds of polymer films such as PEN and PI can be used.

5, the suspension 310 according to the present invention includes a first edge portion 310a that is seated and supported on a frame 340 and a second edge portion 310b that is a boundary surface between the edge and the dome, And a bridge part 310b connecting the first and second rims 310a and 310c to each other.

An external pad 310e for connecting the terminal 370 and the conductive pattern 310-3 is disposed on the first edge 310a and a voice coil 330 and a conductive pad 310b are formed on the second edge 310c. An inner pad 310d for connecting the pattern 310-3 is disposed and the outer pad 310e and the inner pad 310d are connected to the conductive pattern 310-3 which is embedded in the film of the bridge 310b and is protected. Respectively.

The suspension 310 functions as a damper that vibrates the diaphragm only in the vertical direction and does not cause lateral movement, and transmits the audio signal through the conductive pattern 310-3.

FIG. 6 is an exploded perspective view of a suspension according to another embodiment of the present invention, and FIG. 7 is a front view and a rear view of a suspension according to another embodiment of the present invention.

The suspension 310 'of another embodiment shown in FIGS. 6 and 7 includes the first film 310'-1 and the second film 310'-2, the first film 310'-1 and the second film 310'-2 as in the suspension 310 of the above- 3 'disposed between the first film 310'-1 and the second film 310'-2. In another embodiment, the body 310f is integrally formed at the center of the suspension 310' .

As described above, the suspensions 310 and 310 'of the present invention can be applied to various structures such as the case where the central portion is empty or the body is integrally implemented.

FIG. 8 is a flowchart showing a manufacturing procedure of a suspension according to the present invention, and FIG. 9 is a cross-sectional view taken along the line A-A of the suspension according to the present invention.

8, the suspension 310 of the present invention includes steps S101 and S102 of cutting and preparing a first film with a pressure-sensitive adhesive, preparing a conductive pattern having a plating layer on the metal layer (steps S103, (S105) of transferring the conductive film between the first film and the conductive pattern by transferring the conductive pattern to the adhesive side of the first film, (S106 to S108); and a step of aligning the laminated sheet with a first rim portion supported by the frame and a second rim portion to which the voice coil is attached while forming an interface between the edge and the dome, (S109) to complete the suspension by rubbing in the shape of a bridge connecting the rim portions.

As described above, according to the present invention, the first film 311 with the adhesive 312 is cut and prepared, the conductive pattern plated with the tin 313 is prepared on the copper layer 314, and then the conductive pattern is coated on the first film 311 The first film 311 and the conductive pattern are bonded to each other and then bonded to the second film 316 with the adhesive 315 interposed therebetween through the conductive pattern to form the suspension 310 do.

9, the suspension 310 manufactured and completed according to the present invention includes a PEN base film 311, a pressure sensitive adhesive 312, a tin plating layer 313, a copper layer 314, A tin plating layer 313, and a base film layer 316 made of PEN.

In contrast to the suspension manufactured according to the present invention, the conventional suspension 160 includes a film layer of PEN material on the upper / lower layer of the expensive PI base film, and at least two layers of copper The suspension 310 according to the present invention has only one copper layer and a pattern is formed by a transferring method to reduce the number of layers to be laminated, The manufacturing cost can be reduced by about 50% compared with the conventional product, and the production amount per unit time can be greatly increased due to the simple structure.

Further, according to the present invention, since the conductive pattern is embedded between the laminated films, there is no risk of corrosion or disconnection due to no exposure of the conductive pattern, thereby improving the reliability and advantageous in that the deterioration of characteristics is not caused even when the conductive pattern is used for a long time have.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

310: Suspension 310-1: First film
310-2: second film 310-3: conductive film
311: Base film 312: Adhesive
313: tin plating layer 314: copper layer
315: Pressure sensitive adhesive 316: Base film
322: Edge 324: Dome
330: Voice coil 340: Frame
350: magnetic circuit 352: yoke
354: Magnet 356: Plate
360: cover

Claims (5)

delete delete A second rim portion to which a voice coil is attached while forming an interface between an edge and a dome, and a bridge portion connecting the first rim portion and the second rim portion; An outer pad for connecting the terminal and the conductive pattern is disposed in the first rim portion and an inner pad for connecting the voice coil and the conductive pattern is disposed in the second rim portion, The suspension for a speaker being connected to each other through a conductive pattern embedded in the film of the speaker,
A first film having a cutting portion for connecting a terminal and a conductive pattern;
A second film having a cutting portion for connecting the terminal and the conductive pattern, and a cutting portion for connecting the voice coil and the conductive pattern; And
And a conductive pattern embedded between the first film and the second film to transmit the audio signal of the terminal to the voice coil,
Wherein the first film and the second film are polymer films,
A tin plating layer, a copper layer, an adhesive, and a tin plating layer are sequentially stacked between the first film and the second film. delete Preparing a first film with an adhesive attached thereto by cutting;
Preparing a conductive pattern having a plating layer on the metal layer;
Transferring the conductive pattern to the adhesive side of the first film to bond the first film and the conductive pattern;
Bonding the first film with a second film to which the adhesive is adhered with the conductive pattern interposed therebetween; And
The lapped sheet may have a first rim portion supported on the frame and a second rim portion to which the voice coil is attached while forming an interface between the edge and the dome, and a bridge portion connecting the first rim portion and the second rim portion And completing the suspension,
Wherein the first film and the second film are made of a polymer film, the metal layer is made of copper, and the plated layer is made of tin plating.
KR1020150087606A 2015-06-19 2015-06-19 Suspension for speaker and method of making the same KR101673297B1 (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108271106A (en) * 2018-01-08 2018-07-10 瑞声科技(新加坡)有限公司 Loud speaker
KR101911890B1 (en) * 2017-07-19 2019-01-04 이기헌 Damper for speaker and slim type speaker
CN110099341A (en) * 2019-05-10 2019-08-06 瑞声声学科技(深圳)有限公司 Loudspeaker
CN110622527A (en) * 2017-05-17 2019-12-27 伯斯有限公司 Method for manufacturing a micro device having an acoustic diaphragm
KR102120768B1 (en) * 2019-03-25 2020-06-18 삼원액트 주식회사 Method for producing suspension, suspension, suspension produced by the same
KR102152897B1 (en) * 2020-02-19 2020-09-09 삼원액트 주식회사 Method for producing suspension
KR102176421B1 (en) * 2019-10-23 2020-11-11 삼원액트 주식회사 Film type diaphragm of micro speaker
US11019444B2 (en) 2017-07-27 2021-05-25 Bose Corporation Method of fabricating a miniature device having an acoustic diaphragm
CN114189791A (en) * 2019-03-14 2022-03-15 歌尔股份有限公司 Double-sided sound production device and electronic equipment
US11546696B2 (en) 2016-06-14 2023-01-03 Bose Corporation Miniature device having an acoustic diaphragm

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140017059A (en) * 2012-07-30 2014-02-11 주식회사 이엠텍 Suspension for a sound transducer
KR101363522B1 (en) 2013-09-04 2014-02-14 주식회사 비에스이 A suspension with conduction bridge for micro speaker
KR20140127432A (en) * 2013-04-24 2014-11-04 주식회사 이엠텍 Suspension for sound transducer
KR101475342B1 (en) 2013-06-12 2014-12-22 주식회사 이엠텍 Adhisive structure of suspension for microspeaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140017059A (en) * 2012-07-30 2014-02-11 주식회사 이엠텍 Suspension for a sound transducer
KR20140127432A (en) * 2013-04-24 2014-11-04 주식회사 이엠텍 Suspension for sound transducer
KR101475342B1 (en) 2013-06-12 2014-12-22 주식회사 이엠텍 Adhisive structure of suspension for microspeaker
KR101363522B1 (en) 2013-09-04 2014-02-14 주식회사 비에스이 A suspension with conduction bridge for micro speaker

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11546696B2 (en) 2016-06-14 2023-01-03 Bose Corporation Miniature device having an acoustic diaphragm
US11095987B2 (en) 2017-05-17 2021-08-17 Bose Corporation Method of fabricating a miniature device having an acoustic diaphragm
CN110622527A (en) * 2017-05-17 2019-12-27 伯斯有限公司 Method for manufacturing a micro device having an acoustic diaphragm
CN110622527B (en) * 2017-05-17 2021-02-02 伯斯有限公司 Method for manufacturing a micro device having an acoustic diaphragm
KR101911890B1 (en) * 2017-07-19 2019-01-04 이기헌 Damper for speaker and slim type speaker
US11019444B2 (en) 2017-07-27 2021-05-25 Bose Corporation Method of fabricating a miniature device having an acoustic diaphragm
CN108271106A (en) * 2018-01-08 2018-07-10 瑞声科技(新加坡)有限公司 Loud speaker
CN114189791A (en) * 2019-03-14 2022-03-15 歌尔股份有限公司 Double-sided sound production device and electronic equipment
CN114189791B (en) * 2019-03-14 2023-11-17 歌尔股份有限公司 Double-sided sound generating device and electronic equipment
KR102120768B1 (en) * 2019-03-25 2020-06-18 삼원액트 주식회사 Method for producing suspension, suspension, suspension produced by the same
CN110099341A (en) * 2019-05-10 2019-08-06 瑞声声学科技(深圳)有限公司 Loudspeaker
KR102176421B1 (en) * 2019-10-23 2020-11-11 삼원액트 주식회사 Film type diaphragm of micro speaker
KR102152897B1 (en) * 2020-02-19 2020-09-09 삼원액트 주식회사 Method for producing suspension

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