US9271085B2 - Damper of a voice coil plate for a plate speaker - Google Patents
Damper of a voice coil plate for a plate speaker Download PDFInfo
- Publication number
- US9271085B2 US9271085B2 US13/989,485 US201113989485A US9271085B2 US 9271085 B2 US9271085 B2 US 9271085B2 US 201113989485 A US201113989485 A US 201113989485A US 9271085 B2 US9271085 B2 US 9271085B2
- Authority
- US
- United States
- Prior art keywords
- damper
- coil plate
- wall
- bonding part
- extending
- 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.)
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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
- H04R9/02—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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- 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
-
- 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
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
Definitions
- the present invention relates to a plate type speaker, and more specifically, to a guide damper for a plate type speaker made of a flexible synthetic resin.
- a speaker has a voice coil and a diaphragm interposed between magnets and generates a sound as the diaphragm vibrates by the movement of the voice coil.
- a plate type speaker has a plate voice coil and magnets arranged at both sides of the voice coil with a predetermined space, and an induced electromotive force is generated by the Fleming's left hand rule and the Lorentz rule to form a frequency corresponding to a voice and reproduce the sound by vibrating the diaphragm using the frequency.
- the voice coil is spirally wound or printed as a pattern in an oval shape on one side or both sides of a coil base of a plate shape so as to form a voice coil plate.
- the diaphragm is attached on the top of the voice coil plate in the lengthwise direction, and a sound is generated as the diaphragm vibrates according to the movement of the voice coil plate.
- a guide damper is used to transfer the vibration from the voice coil plate to the diaphragm, and a damper covered with a piece of thin cloth or made of a metal material is used as the guide damper in the prior art.
- the present invention has been made in view of the above problems, and it is an object of the present invention to provide a damper made of a flexible rubber material, which can transfer further more sound energies to a diaphragm through a voice coil plate.
- Another object of the present invention is to provide a damper made of a rubber material, which can lower manufacturing cost by manufacturing the damper as an integrated mold product, adhere the voice coil plate and the damper further easily, and strengthen adhesive force of the voice coil plate and the damper.
- a guide damper of a voice coil plate for a plate type speaker including: a coil plate bonding part made of a flexible synthetic resin material, having an integrated structure, and including a groove of a lengthwise direction formed at a central portion thereof so that the voice coil plate may be seated and bonded; an outer frame adhered on a base frame defining an outer appearance of the plate type speaker and formed in a closed loop shape configuring an outer appearance of the damper; and a damper bridge for connecting left and right sides of the coil plate bonding part to the outer frame and in charge of damping between the coil plate bonding part and the outer frame.
- the damper bridge has a predetermined width and includes a wrinkle part having wrinkles formed in a widthwise direction.
- the damper bridge is formed as many as three to five.
- the synthetic resin material is rubber.
- a damper for a plate type speaker which can transfer further more sound energies to a diaphragm through a voice coil plate, lower manufacturing cost by manufacturing the damper as an integrated mold product, adhere the voice coil plate and the damper further easily, and strengthen adhesive force of the voice coil plate and the damper.
- FIG. 1 is an exploded perspective view showing a guide damper of a voice coil plate for a plate type speaker according to the present invention.
- FIG. 2 is a perspective view showing a guide damper of a voice coil plate for a plate type speaker according to a first embodiment of the present invention.
- FIG. 3 is a perspective view showing a guide damper of a voice coil plate for a plate type speaker according to a second embodiment of the present invention.
- FIG. 4 is a perspective view showing a guide damper of a voice coil plate for a plate type speaker according to a third embodiment of the present invention.
- Voice coil plate 111 Guide damper 112: Yoke 113: Magnet 114: Magnetic body 115: Diaphragm 201, 301, 401: Coil plate bonding part 201a, 301a, 401a: Groove 201b, 301b, 401b: Wing 202: Outer frame 203a, 203b, 203c, 303a, 303b, 303c, 303d, 403a, 403b, 403c, 403d, 403e: Damper bridge
- FIG. 1 is an exploded perspective view showing a guide damper of a voice coil plate for a plate type speaker according to the present invention.
- a plate type speaker includes a voice coil plate 110 having a voice coil spirally wound or printed as a pattern, a pair of magnetic bodies 114 spaced apart from each other by a predetermined distance on the left and right sides of the voice coil plate 110 , a guide damper 111 combined on the bottom of the voice coil plate 110 to support vertical movement of the voice coil plate 110 and a diaphragm 115 combined on the top of the voice coil plate 110 to transfer vibration energies as a sound, and the plate type speaker may further include a base frame (not shown) of a synthetic resin material, which forms an outer appearance and combines various parts.
- the magnetic body 114 may be configured in the form of combining a magnet 113 in the middle and yokes or magnetic plates 112 on the top and bottom of the magnet 113 .
- the plate type speaker of the present invention has the voice coil plate 110 and the magnetic bodies 114 arranged at both sides of the voice coil plate with a predetermined space, so that when a current flows through the voice coil, an induced electromotive force is generated by the Fleming's left hand rule and the Lorentz rule, and the voice coil plate 110 moves in the vertical direction by the induced electromotive force.
- the guide damper 111 combined on the bottom of the voice coil plate 110 supports vertical movement of the voice coil plate 110 so that further more vibrations may be transferred to the diaphragm 115 .
- the guide damper 111 of the first to third embodiments is combined on the bottom of the voice coil plate 110 and functions as a leaf spring or a damper working as a supporting means for transferring further more vibration energies to the diaphragm.
- the guide damper 111 is made of a flexible synthetic resin material, preferably a rubber material, and may be manufactured as a mold product injection-molded in one piece.
- FIG. 2 is a perspective view showing a guide damper of a voice coil plate for a plate type speaker according to a first embodiment of the present invention.
- the guide damper 111 is formed in a rectangular shape extended in the lengthwise direction and made of a rubber material molding a coil plate bonding part 201 , an outer frame 202 and damper bridges 203 a , 203 b and 203 c in one piece.
- the coil plate bonding part 201 is formed in the lengthwise direction and has a groove 201 a of a lengthwise direction formed at the central portion thereof so that the voice coil plate 110 may be seated and bonded, and wing parts 201 b and 201 c formed by extending both ends of the groove 201 a.
- the groove 201 a of the coil plate bonding part 201 has a structure capable of maintaining the voice coil plate 110 to be positioned at the center and enhancing the bonding force.
- the wing parts 201 b and 201 c function as a part for attaching the damper bridges 203 a , 203 b and 203 c.
- the outer frame 202 is a part adhered on the base frame (not shown) which defines an outer appearance of the plate type speaker and formed in a closed loop shape configuring the outer appearance of the guide damper 111 .
- the damper bridges 203 a , 203 b and 203 c respectively connect the left and right sides of the coil plate bonding part 201 to the outer frame 202 and add damping force between the coil plate bonding part 201 and the outer frame 202 .
- three damper bridges 203 a , 203 b and 203 c respectively having left and right sides are formed in the middle and at both ends of the guide damper 111 .
- the damper bridges 203 a , 203 b and 203 c may have a plurality of wrinkle parts 204 wrinkled in the widthwise direction in order to enhance damping strength and tensile strength.
- a plurality of thin lead lines having a reduced width may be configured instead of the wrinkle parts 204 so that the plurality of thin lead lines may form a damper bridge.
- FIG. 3 is a perspective view showing a guide damper of a voice coil plate for a plate type speaker according to a second embodiment of the present invention.
- the configuration of the second embodiment of the present invention is the same as that of the first embodiment except that a damper bridge is further added.
- the guide damper 111 is formed in a rectangular shape extended in the lengthwise direction and made of a rubber material molding a coil plate bonding part 301 , an outer frame 302 and damper bridges 303 a , 303 b , 303 c and 303 d in one piece.
- the coil plate bonding part 301 is formed in the lengthwise direction and has a groove 301 a of a lengthwise direction formed at the central portion thereof so that the voice coil plate 110 may be seated and bonded, and wing parts 301 b and 301 c formed by extending both ends of the groove 301 a.
- the groove 301 a of the coil plate bonding part 301 has a structure capable of maintaining the voice coil plate 110 to be positioned at the center and enhancing the bonding force.
- the wing parts 301 b and 301 c function as a part for attaching the damper bridges 303 a , 303 b , 303 c and 303 d.
- the outer frame 302 is a part adhered on the base frame (not shown) which defines an outer appearance of the plate type speaker and formed in a closed loop shape configuring the outer appearance of the guide damper 111 .
- the damper bridges 303 a , 303 b , 303 c and 303 d respectively connect the left and right sides of the coil plate bonding part 301 to the outer frame 302 and add damping force between the coil plate bonding part 301 and the outer frame 302 .
- the damper bridges 303 a , 303 b , 303 c and 303 d may have a plurality of wrinkle parts 304 wrinkled in the widthwise direction in order to enhance damping strength and tensile strength.
- FIG. 4 is a perspective view showing a guide damper of a voice coil plate for a plate type speaker according to a third embodiment of the present invention.
- the configuration of the third embodiment of the present invention is the same as that of the first embodiment except that two damper bridges are further added.
- the guide damper 111 is formed in a rectangular shape extended in the lengthwise direction and made of a rubber material molding a coil plate bonding part 401 , an outer frame 402 and damper bridges 403 a , 403 b , 403 c , 403 d and 403 e in one piece.
- the coil plate bonding part 401 is formed in the lengthwise direction and has a groove 401 a of a lengthwise direction formed at the central portion thereof so that the voice coil plate 110 may be seated and bonded, and wing parts 401 b and 401 c formed by extending both ends of the groove 401 a.
- the groove 401 a of the coil plate bonding part 401 has a structure capable of maintaining the voice coil plate 110 to be positioned at the center and enhancing the bonding force.
- the wing parts 401 b and 401 c function as a part for attaching the damper bridges 403 a , 403 b , 403 c , 403 d and 403 e.
- the outer frame 402 is a part adhered on the base frame (not shown) which defines an outer appearance of the plate type speaker and formed in a closed loop shape configuring the outer appearance of the guide damper 111 .
- the damper bridges 403 a , 403 b , 403 c , 403 d and 403 e respectively connect the left and right sides of the coil plate bonding part 401 to the outer frame 402 and add damping force between the coil plate bonding part 401 and the outer frame 402 .
- the damper bridges 403 a , 403 b , 403 c , 403 d and 403 e may have a plurality of wrinkle parts 404 wrinkled in the widthwise direction in order to enhance damping strength and tensile strength.
- the number of damper bridges used in the damper of the present invention described above may be correlated with the length of the plate type speaker, and it will not make a problem if one or more damper bridges are used. However, since the damping force may be excessively lowered if less than three damper bridges are used and damping capability may be lowered if five ore more damper bridges are used, it is preferable to maximize the damping force by installing three to five damper bridges as shown in the first to third embodiments of the present invention.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
110: Voice coil plate | 111: Guide damper |
112: Yoke | 113: Magnet |
114: Magnetic body | 115: |
201, 301, 401: Coil |
|
201a, 301a, 401a: Groove | |
201b, 301b, 401b: Wing | 202: |
203a, 203b, 203c, 303a, 303b, 303c, 303d, 403a, | |
403b, 403c, 403d, 403e: Damper bridge | |
Claims (17)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2010-0119430 | 2010-11-29 | ||
KR1020100119430A KR101154252B1 (en) | 2010-11-29 | 2010-11-29 | Damper of voice coil plate for flat type speaker |
PCT/KR2011/008610 WO2012074223A1 (en) | 2010-11-29 | 2011-11-11 | Damper of a voice coil plate for a plate speaker |
Publications (2)
Publication Number | Publication Date |
---|---|
US20130259272A1 US20130259272A1 (en) | 2013-10-03 |
US9271085B2 true US9271085B2 (en) | 2016-02-23 |
Family
ID=46172101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/989,485 Active US9271085B2 (en) | 2010-11-29 | 2011-11-11 | Damper of a voice coil plate for a plate speaker |
Country Status (5)
Country | Link |
---|---|
US (1) | US9271085B2 (en) |
EP (1) | EP2648422A4 (en) |
KR (1) | KR101154252B1 (en) |
CN (1) | CN103270774B (en) |
WO (1) | WO2012074223A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9749742B2 (en) | 2015-07-20 | 2017-08-29 | Sound Solutions International Co., Ltd. | Electric rocking mode damper |
US10880653B2 (en) | 2019-05-21 | 2020-12-29 | Apple Inc. | Flat transducer for surface actuation |
US11632630B2 (en) * | 2020-07-28 | 2023-04-18 | Lg Electronics Inc. | Speaker assembly and display device comprising it |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109246552B (en) * | 2018-09-28 | 2020-04-24 | 歌尔股份有限公司 | Vibrating diaphragm, vibrating diaphragm assembly and loudspeaker |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10191494A (en) | 1996-10-30 | 1998-07-21 | Matsushita Electric Ind Co Ltd | Speaker |
JP2002176692A (en) | 2000-12-07 | 2002-06-21 | Matsushita Electric Ind Co Ltd | Loud speaker |
JP2002218585A (en) | 2001-01-18 | 2002-08-02 | Matsushita Electric Ind Co Ltd | Speaker |
US6973194B2 (en) * | 2001-05-11 | 2005-12-06 | Matsushita Electric Industrial Co., Ltd. | Speaker |
US7110561B2 (en) * | 2000-12-28 | 2006-09-19 | Neosonica Technologies, Inc. | Transparent panel-form loudspeaker |
US20080205686A1 (en) * | 2007-01-29 | 2008-08-28 | Sony Corporation | Speaker unit and speaker apparatus |
US20080212808A1 (en) * | 2007-01-11 | 2008-09-04 | Victor Company Of Japan, Ltd. | Diaphragm, diaphragm assembly and electroacoustic transducer |
US7502486B2 (en) * | 2003-12-05 | 2009-03-10 | Joung-Youl Shin | Plane speaker having coil plate guide device |
KR20100109636A (en) | 2009-04-01 | 2010-10-11 | 김상록 | Flat type speaker having damper |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007318284A (en) * | 2006-05-24 | 2007-12-06 | Pioneer Electronic Corp | Damper for speaker apparatus, and speaker apparatus |
-
2010
- 2010-11-29 KR KR1020100119430A patent/KR101154252B1/en active IP Right Grant
-
2011
- 2011-11-11 US US13/989,485 patent/US9271085B2/en active Active
- 2011-11-11 WO PCT/KR2011/008610 patent/WO2012074223A1/en active Application Filing
- 2011-11-11 EP EP11844316.7A patent/EP2648422A4/en not_active Withdrawn
- 2011-11-11 CN CN201180057293.1A patent/CN103270774B/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10191494A (en) | 1996-10-30 | 1998-07-21 | Matsushita Electric Ind Co Ltd | Speaker |
JP2002176692A (en) | 2000-12-07 | 2002-06-21 | Matsushita Electric Ind Co Ltd | Loud speaker |
US7110561B2 (en) * | 2000-12-28 | 2006-09-19 | Neosonica Technologies, Inc. | Transparent panel-form loudspeaker |
JP2002218585A (en) | 2001-01-18 | 2002-08-02 | Matsushita Electric Ind Co Ltd | Speaker |
US6973194B2 (en) * | 2001-05-11 | 2005-12-06 | Matsushita Electric Industrial Co., Ltd. | Speaker |
US7502486B2 (en) * | 2003-12-05 | 2009-03-10 | Joung-Youl Shin | Plane speaker having coil plate guide device |
US20080212808A1 (en) * | 2007-01-11 | 2008-09-04 | Victor Company Of Japan, Ltd. | Diaphragm, diaphragm assembly and electroacoustic transducer |
US20080205686A1 (en) * | 2007-01-29 | 2008-08-28 | Sony Corporation | Speaker unit and speaker apparatus |
KR20100109636A (en) | 2009-04-01 | 2010-10-11 | 김상록 | Flat type speaker having damper |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9749742B2 (en) | 2015-07-20 | 2017-08-29 | Sound Solutions International Co., Ltd. | Electric rocking mode damper |
US10880653B2 (en) | 2019-05-21 | 2020-12-29 | Apple Inc. | Flat transducer for surface actuation |
US11438701B2 (en) | 2019-05-21 | 2022-09-06 | Apple Inc. | Flat transducer for surface actuation |
US11632630B2 (en) * | 2020-07-28 | 2023-04-18 | Lg Electronics Inc. | Speaker assembly and display device comprising it |
Also Published As
Publication number | Publication date |
---|---|
US20130259272A1 (en) | 2013-10-03 |
WO2012074223A1 (en) | 2012-06-07 |
KR20120057887A (en) | 2012-06-07 |
EP2648422A1 (en) | 2013-10-09 |
CN103270774B (en) | 2016-01-20 |
EP2648422A4 (en) | 2017-01-25 |
KR101154252B1 (en) | 2012-06-13 |
CN103270774A (en) | 2013-08-28 |
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