CN109429153B - Coaxial double-voice coil driving assembly - Google Patents
Coaxial double-voice coil driving assembly Download PDFInfo
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- CN109429153B CN109429153B CN201810971638.8A CN201810971638A CN109429153B CN 109429153 B CN109429153 B CN 109429153B CN 201810971638 A CN201810971638 A CN 201810971638A CN 109429153 B CN109429153 B CN 109429153B
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- magnetic
- conduction plate
- drive assembly
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- 230000009977 dual effect Effects 0.000 claims abstract description 25
- 230000007423 decrease Effects 0.000 claims description 8
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 230000005236 sound signal Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
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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
- H04R9/06—Loudspeakers
- H04R9/063—Loudspeakers using a plurality of acoustic drivers
-
- 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
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
-
- 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
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
A coaxial dual voice coil drive assembly. Coaxial dual voice coil drive assemblies are used in speakers. The coaxial double-voice coil driving assembly comprises a yoke, a first magnet, a second magnet, a first magnetic conduction plate, a second magnetic conduction plate, a first voice coil and a second voice coil. The first magnet comprises a first shaft hole, and the center column penetrates through the first shaft hole, so that the first magnet is sleeved on the yoke. The second magnet is fixed on the yoke and comprises a second shaft hole, and the top bulge penetrates through the second shaft hole so that the second magnet is sleeved on the yoke. Wherein, the magnetic direction of the first magnet is the same as the magnetic direction of the second magnet. In the technical scheme of the application, the coaxial double-voice coil driving assembly pushes the two voice coils by using the same magnetic circuit system, so that the number of magnets required in the voice coil driving assembly can be greatly reduced, the volume can be reduced, the weight can be reduced, and the special structural design can also achieve the effect of loudspeaker.
Description
Technical Field
The present application relates to speakers, and more particularly to a coaxial dual voice coil drive assembly in a speaker.
Background
A moving coil speaker (or called an electrodynamic speaker) is a speaker that generates sound by pushing a diaphragm with magnetic force through interaction between a voice coil and a magnet. That is, when the signal wire transmits the sound signal to the voice coil, the voice coil generates a magnetic field due to electromagnetic induction, and the magnetic field generated by the electromagnetic induction and the magnetic field of the magnet interact to drive the vibrating diaphragm to vibrate, so that the sound signal is converted into sound waves.
The audio signal generally includes a high-pitch and a low-pitch, which have different frequency characteristics, and if the audio signal is converted through a single voice coil, the audio cannot be actually presented, so that a dual-voice coil mode is often adopted to avoid audio distortion.
In the prior art, if the dual voice coils are coaxially arranged, the dual-voice coil efficiency is usually achieved only by adopting dual-group yokes and dual-group magnets. Therefore, in order to design two sets of magnetic circuit systems which are not mutually interfered, not only are more adopted component elements, but also the arrangement and combination of the component elements are more complicated, and more supporting elements are needed to achieve the aim of assembly.
Disclosure of Invention
In order to solve the above-mentioned problems in the prior art, a coaxial dual voice coil driving assembly is provided herein. The coaxial double-voice coil driving assembly comprises a yoke, a first magnet, a second magnet, a first magnetic conduction plate, a second magnetic conduction plate, a first voice coil and a second voice coil. The yoke comprises a bearing disc, a middle column and a top protrusion, wherein the middle column extends from the bearing disc along an axial direction, and the top protrusion extends from the middle column along the axial direction towards a direction far away from the bearing disc. The first magnet comprises a first shaft hole, and the center column penetrates through the first shaft hole, so that the first magnet is sleeved on the yoke and is contacted with the bearing disc. The second magnet is fixed on the yoke and comprises a second shaft hole, and the top bulge penetrates through the second shaft hole, so that the second magnet is sleeved on the yoke and is contacted with the top surface of the center column. Wherein, the magnetic direction of the first magnet is the same as the magnetic direction of the second magnet. The first magnetic conduction plate comprises a first perforation, and at least one part of the top bulge penetrates through the first perforation, so that the second magnet is positioned between the first magnetic conduction plate and the center pillar, and a first magnetic gap is formed between the first magnetic conduction plate and the top bulge. The second magnetic conduction plate comprises a second perforation, the first perforation and the second perforation are coaxially arranged by taking the axial direction as a central shaft, the second magnetic conduction plate is arranged on the first magnet, at least one part of the first magnetic conduction plate and the top bulge is positioned in the second perforation, and a second magnetic gap is formed between the second magnetic conduction plate and the first magnetic conduction plate. The first voice coil is located in the first magnetic gap. The second voice coil is located in the second magnetic gap.
In one embodiment, the magnetic energy product of the second magnet is greater than that of the first magnet. Preferably, the second magnet is a neodymium iron boron magnet ring (NdFeB magnet). Preferably, the first magnet is a Ferrite magnet ring (Ferrite magnet).
In one embodiment, the first voice coil is a high pitch voice coil and the second voice coil is a low pitch voice coil.
In one embodiment, the thickness of the first magnetic conductive plate decreases stepwise from the outer edge to the first through hole. Preferably, the contact surface of the first magnetic conduction plate and the first magnet is a plane.
In one embodiment, the outer edge radius of the second magnet is substantially the same as the outer edge radius of the first magnetically permeable plate.
In one embodiment, the outer edge radius of the yoke is substantially the same as the outer edge radius of the second magnetically permeable plate.
In one embodiment, the thickness of the second magnetically permeable plate decreases from the inner edge to the outer edge. Preferably, the contact surface of the second magnetic conduction plate and the first magnet is a plane.
In one embodiment, the thickness of the carrier plate decreases from the center post to the outer edge. Preferably, the contact surface of the bearing disc and the first magnet is a plane.
In one embodiment, the center post further comprises a groove, which is an annular groove disposed along the outer periphery of the crown.
It can be understood by those skilled in the art that in the technical scheme of the application, the coaxial double-voice coil driving assembly pushes two voice coils by using the same magnetic circuit system, so that the number of magnets required in the voice coil driving assembly can be greatly reduced, the volume can be reduced, the weight can be reduced, and the special structural design can also achieve the effect of loudspeaker. Meanwhile, the support elements can be reduced during assembly, the steps required by assembly are reduced, and the time required by assembly is shortened.
Drawings
The preferred embodiments of the present application will be described below with reference to the accompanying drawings for portions of a voice coil drive assembly in a speaker, so that the shape, connection, location of a locking member, etc. of the use of a single diaphragm, a double diaphragm, or diaphragms is not limited.
Fig. 1 is an exploded perspective view of a coaxial dual voice coil drive assembly.
Fig. 2 is a cross-sectional view of a coaxial dual voice coil drive assembly.
Fig. 3 is a partial enlarged view of the region B in fig. 2.
Fig. 4 is a magnetic field line distribution diagram of a coaxial dual voice coil drive assembly.
Detailed Description
Preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present application, and are not intended to limit the scope of the present application. Those skilled in the art can adapt it as desired to suit a particular application.
It should be noted that, in the description of the present application, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or component must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The specific meaning of the above terms in the present application can be understood by those skilled in the art according to the specific circumstances.
The coaxial dual voice coil drive assembly of the present application is particularly suited for use with speakers, as shown in FIGS. 1-3. Fig. 1 is an exploded perspective view of a coaxial dual voice coil drive assembly. Fig. 2 is a cross-sectional view of a coaxial dual voice coil drive assembly. Fig. 3 is a partial enlarged view of a region B of fig. 2. The coaxial dual voice coil driving assembly 1 includes a yoke 70, a first magnet 10, a second magnet 20, a first magnetic conductive plate 30, a second magnetic conductive plate 40, a first voice coil 50, and a second voice coil 60. The yoke 70, the first magnet 10, the second magnet 20, the first magnetic conductive plate 30, the second magnetic conductive plate 40, the first voice coil 50, and the second voice coil 60 are coaxially disposed with the axial direction a as a central axis.
Yoke 70 is a T-yoke comprising a carrier plate 72, a center post 74 and a top protrusion 76. A center post 74 extends upwardly from the carrier plate 72 along the axis a. The top projection 76 extends upwardly from the center post 74 along the axis a toward a direction away from the carrier plate 72. As seen in the cross section of fig. 2, the center post 74 of the yoke 70 is stepped down from the center to the sides, i.e., the radius of the top projection 76 is smaller than the radius of the center post 74.
The first magnet 10 includes a first shaft hole 11, a first surface 102, and a second surface 104. The second magnet 20 includes a second shaft aperture 21, a first face 202, and a second face 204. The first surface 102 of the first magnet 10 is a contact surface between the first magnet 10 and the second magnetically permeable plate 40. The first surface 202 of the second magnet 20 is the contact surface between the second magnet 20 and the first magnetically permeable plate 30. Here, the poles of the first magnet 10 and the second magnet 20 are located on the first surface 102/202 and the second surface 104/204, respectively. In one embodiment, the magnetic energy product of the second magnet 20 is greater than that of the first magnet 10. Preferably, the second magnet 20 is a neodymium iron boron magnet ring (NdFeB magnet). Preferably, the first magnet 10 is a Ferrite magnet ring (ferromagnet).
The center post 74 passes through the first shaft hole 11 of the first magnet 10, so that the first magnet 10 is sleeved on the yoke 70. The second face 104 of the first magnet 10 is in contact with the carrier plate 72. The second magnet 20 is positioned on the yoke 70, the top protrusion 76 passes through the second shaft hole 21 of the second magnet 20, so that the second magnet 20 is sleeved on the middle post 74 of the yoke 70, and the second surface 204 of the second magnet 20 contacts the top surface of the middle post 74.
The first magnetic conductive plate 30 includes a first through hole 31, and at least a portion of the top protrusion 76 passes through the first through hole 31, so that the second magnet 20 is sandwiched between the first magnetic conductive plate 30 and the center pillar 74. The contact surface of the first magnetically permeable plate 30 and the center post 74 is a plane. Preferably, the thickness of the first magnetic conductive plate 30 decreases stepwise from the outer edge to the inner edge. The first magnetic conductive plate 30 includes a first step 302 and a second step 304, the outermost ring of the first magnetic conductive plate 30 is the higher first step 302, and adjacent to the first step 302 inward is the second step 304. The first magnetically permeable plate 30 includes a notch 306 at a portion of the first step 302. For example, two notches 306 are provided, each at two corresponding ends on the diameter of the first magnetic conductive plate 30.
Referring back to fig. 1, in an embodiment, the supporting member 80 may be disposed on the second step 304 of the first magnetic conductive plate 30 to strengthen and fix the first magnetic conductive plate 30, so as to avoid excessive vibration during driving of the speaker. The support 80 is not necessary and is therefore shown in phantom and is not shown in fig. 2.
The second magnetic conductive plate 40 includes a second through hole 41, and the first through hole 31 of the first magnetic conductive plate 30 and the second through hole 41 of the second magnetic conductive plate 40 are coaxially disposed about the axial direction a as a central axis. The second magnetic conductive plate 40 is disposed on the first magnet 10, and at least a portion of the first magnetic conductive plate 30 and the top protrusion 76 are located in the second through hole 41.
In one embodiment, the outer edge radius of the second magnet 20 is substantially the same as the outer edge radius of the first magnetically permeable plate 30. The outer edge radius of the yoke 70 is substantially the same as the outer edge radius of the second magnetic conductive plate 40.
Preferably, the carrier plate 72 may be cylindrical, disk-shaped, hemispherical, or disk-shaped. The thickness of the carrier plate 72 decreases from the center post 74 to the outer edge. In other words, the center of the carrier plate 72 is thicker and the outer periphery becomes thinner. The contact surface of the carrier plate 72 and the first magnet 10 is a plane, and the other surface of the carrier plate 72 is inclined from the center to the outer periphery in a decreasing manner, so that the thickness of the carrier plate 72 is decreased from the center post 74 to the outer periphery. The thickness of the second magnetic conductive plate 40 decreases from the inner edge to the outer edge. Preferably, the contact surface between the second magnetic conductive plate 40 and the first magnet 10 is a plane, and the other surface of the second magnetic conductive plate 40 is inclined from the center to the outer periphery, so that the thickness of the second magnetic conductive plate 40 decreases from the center to the outer periphery. As seen from the sectional view of fig. 2, the thickness of the outer edges of the carrier plate 72 and the second magnetic conductive plate 40 is reduced, so that the overall volume of the coaxial dual voice coil driving assembly 1 can be further reduced.
The first magnetic conductive plate 30 and the top protrusion 76 have a first magnetic gap 500 therebetween, and the first voice coil 50 is positioned in the first magnetic gap 500. The first voice coil 50 is a high-pitched voice coil. The thickness of the first magnet 10 is substantially the same as the height of the center pillar 74, so that when the second magnetic conductive plate 40 is disposed on the first magnet 10, the inner sidewall of the second through hole 41 corresponds to the first magnetic conductive plate 30, and a second magnetic gap 600 is formed between the second magnetic conductive plate 40 and the first magnetic conductive plate 30. The second voice coil 60 is located in the second magnetic gap 600. The second voice coil 60 is a bass voice coil.
In one embodiment, the radius of the outer edge of the first magnet 10 is larger than the radius of the outer edge of the yoke 70, and the radius of the first shaft hole 11 is larger than the radius of the center post 74, so that when the first magnet 10 is sleeved on the yoke 70, a distance is provided between the center post 74 and the first magnet 10, and the distance is larger than the distance of the first magnetic gap 500.
Referring back to fig. 1, a groove 78 is provided between the center post 74 and the top protrusion 76, and the groove 78 is an annular groove provided along the outer periphery of the top protrusion 76. When the second magnet 20 is thin, the groove 78 may be reserved for the first voice coil 50 as a voice coil stroke.
Fig. 4 is a magnetic field line distribution diagram of a coaxial dual voice coil drive assembly. The magnetic directions of the first magnet 10 and the second magnet 20 are the same. That is, the second surface 104 of the first magnet 10 and the second surface 204 of the second magnet 20 have the same magnetic poles, so that the first magnet 10 can isolate the magnetic flux (magnetic flux) from the second magnet 20, thereby avoiding the magnetic field loss. As can be seen from fig. 4, the magnetic force lines are prevented from passing directly through the second magnet 20 based on the principle of homopolar repulsion. The magnetic force lines from the first magnet 10 bypass when they come close to the second surface 204 of the second magnet 20, that is, most of the magnetic force lines flow to the first magnetic conductive plate 30 and the second magnetic conductive plate 40.
Preferably, the first face 102 of the first magnet 10 and the first face 202 of the second magnet 20 are both N-poles. In other words, in the driving state, the magnetic force lines flow from the first magnetic gap 500 to the second magnetic gap 600 from the N pole to the S pole, i.e. the first magnetic gap 500 and the second magnetic gap 600 can have stronger magnetic fields. The magnetic circuit design can obtain higher energy and better sound effect.
Further, the second magnet 20 of the present application uses a rare earth neodymium iron boron magnet ring (NdFeB magnet), and the rare earth cobalt-based material has not only a large magnetic energy product but also a large coercive force, so that it can be made into a small and thin permanent magnet. Therefore, the structure of the present application can effectively guide the magnetic force lines flowing from the first magnetic gap 500 to the second magnetic gap 600, so that the first magnetic gap 500 and the second magnetic gap 600 can have stronger magnetic fields.
Thus far, the technical solution of the present application has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present application is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present application, and such modifications and substitutions will fall within the scope of the present application.
Claims (11)
1. A coaxial dual voice coil drive assembly comprising:
the yoke comprises a bearing disc, a middle column and a top protrusion, wherein the middle column extends out of the bearing disc along an axial direction, and the top protrusion extends out of the middle column along the axial direction towards a direction far away from the bearing disc; the radius of the top bulge is smaller than that of the middle column;
the first magnet comprises a first shaft hole, and the center column penetrates through the first shaft hole, so that the first magnet is sleeved on the yoke and is contacted with the bearing disc;
the second magnet is positioned on the yoke, the second magnet comprises a second shaft hole, the top protrusion penetrates through the second shaft hole, the second magnet is sleeved on the yoke and is contacted with the top surface of the center pillar, and the magnetic direction of the first magnet is the same as that of the second magnet;
a first magnetic conduction plate comprising a first perforation through which at least a portion of the top protrusion passes such that the second magnet is positioned between the first magnetic conduction plate and the center pillar, the first magnetic conduction plate and the top protrusion having a first magnetic gap therebetween;
the second magnetic conduction plate comprises a second perforation, the first perforation and the second perforation are coaxially arranged by taking the axial direction as a central shaft, the second magnetic conduction plate is arranged on the first magnet, at least one part of the first magnetic conduction plate and the top bulge are positioned in the second perforation, and a second magnetic gap is formed between the second magnetic conduction plate and the first magnetic conduction plate;
a first voice coil located in the first magnetic gap; and
and the second voice coil is positioned in the second magnetic gap.
2. The coaxial dual voice coil drive assembly of claim 1, wherein:
the magnetic energy product of the second magnet is larger than that of the first magnet.
3. The coaxial dual voice coil drive assembly of claim 2, wherein:
the second magnet is a neodymium iron boron magnet ring.
4. A coaxial dual voice coil drive assembly in accordance with claim 3, wherein:
the first magnet is a ferrite ring.
5. The coaxial dual voice coil drive assembly of any one of claims 1 to 4, wherein:
the first voice coil is a high-pitch voice coil, and the second voice coil is a low-pitch voice coil.
6. The coaxial dual voice coil drive assembly of claim 1, wherein:
the thickness of the first magnetic conduction plate is gradually decreased from the outer edge to the inner edge.
7. The coaxial dual voice coil drive assembly of claim 1, wherein:
the outer edge radius of the second magnet is the same as that of the first magnetic conduction plate.
8. The coaxial dual voice coil drive assembly of claim 1, wherein:
the outer edge radius of the yoke is the same as the outer edge radius of the second magnetic conduction plate.
9. The coaxial dual voice coil drive assembly of claim 1, wherein:
the thickness of the second magnetic conduction plate decreases from the inner edge to the outer edge.
10. The coaxial dual voice coil drive assembly of claim 1, wherein:
the thickness of the bearing disc is gradually decreased from the middle to the outer edge.
11. The coaxial dual voice coil drive assembly of claim 1, wherein:
the center post further comprises a groove, and the groove is an annular groove arranged along the outer periphery of the top bulge.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762550151P | 2017-08-25 | 2017-08-25 | |
| US62/550,151 | 2017-08-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109429153A CN109429153A (en) | 2019-03-05 |
| CN109429153B true CN109429153B (en) | 2023-08-18 |
Family
ID=63405068
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821382520.3U Expired - Fee Related CN208724199U (en) | 2017-08-25 | 2018-08-24 | Coaxial double voice coil driving assembly |
| CN201810971638.8A Active CN109429153B (en) | 2017-08-25 | 2018-08-24 | Coaxial double-voice coil driving assembly |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821382520.3U Expired - Fee Related CN208724199U (en) | 2017-08-25 | 2018-08-24 | Coaxial double voice coil driving assembly |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3448062B1 (en) |
| CN (2) | CN208724199U (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3448062B1 (en) * | 2017-08-25 | 2019-12-18 | Tymphany HK Limited | Coaxial dual-voice-coil driver |
| CN217721457U (en) * | 2022-06-30 | 2022-11-01 | 瑞声光电科技(常州)有限公司 | Coaxial loudspeaker |
| CN217721454U (en) | 2022-06-30 | 2022-11-01 | 瑞声光电科技(常州)有限公司 | Coaxial loudspeaker |
| CN217693686U (en) | 2022-06-30 | 2022-10-28 | 瑞声光电科技(常州)有限公司 | Coaxial loudspeaker |
| WO2024119340A1 (en) * | 2022-12-06 | 2024-06-13 | 瑞声光电科技(常州)有限公司 | Coaxial earphone core |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61285897A (en) * | 1985-07-12 | 1986-12-16 | Kenwood Corp | Dome type speaker |
| JPH10285691A (en) * | 1997-04-01 | 1998-10-23 | Sony Corp | Acoustic transducer |
| JP2000138996A (en) * | 1998-10-30 | 2000-05-16 | Sony Corp | Speaker system |
| JP2000278792A (en) * | 1999-03-29 | 2000-10-06 | Sony Corp | Speaker and speaker unit |
| CN1652634A (en) * | 2004-02-06 | 2005-08-10 | 先锋株式会社 | Loudspeaker |
| CN201594909U (en) * | 2009-10-26 | 2010-09-29 | 北京七九七华音电子有限责任公司 | Loudspeaker magnetic circuit and loudspeaker |
| JP2010263363A (en) * | 2009-05-01 | 2010-11-18 | Koichiro Akimoto | Loudspeaker device |
| CN201854415U (en) * | 2009-12-21 | 2011-06-01 | 瑞声声学科技(深圳)有限公司 | Electromagnetic loudspeaker with double voice coils |
| CN105812997A (en) * | 2016-03-14 | 2016-07-27 | 青岛海信电器股份有限公司 | Loudspeaker |
| CN105848064A (en) * | 2016-05-10 | 2016-08-10 | 青岛歌尔声学科技有限公司 | Dual-magnetic-gap magnetic path system and loudspeaker with same |
| EP3157267A1 (en) * | 2015-10-14 | 2017-04-19 | Music Group IP Ltd. | Loudspeaker |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8175320B2 (en) * | 2007-06-27 | 2012-05-08 | Sound Sources Technology, Inc. | Single magnet coaxial loudspeaker |
| CN201657285U (en) * | 2010-01-11 | 2010-11-24 | 瑞声声学科技(深圳)有限公司 | Miniature double-magnetic-steel and double-voice-coil electromagnetic loudspeaker |
| HU230260B1 (en) * | 2012-09-17 | 2015-11-30 | NOVINEX Innováció- és Kutatás-hasznosító Iroda Kft. | Coaxial loudspeker arrangemet |
| EP3448062B1 (en) * | 2017-08-25 | 2019-12-18 | Tymphany HK Limited | Coaxial dual-voice-coil driver |
-
2018
- 2018-08-24 EP EP18190735.3A patent/EP3448062B1/en active Active
- 2018-08-24 CN CN201821382520.3U patent/CN208724199U/en not_active Expired - Fee Related
- 2018-08-24 CN CN201810971638.8A patent/CN109429153B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61285897A (en) * | 1985-07-12 | 1986-12-16 | Kenwood Corp | Dome type speaker |
| JPH10285691A (en) * | 1997-04-01 | 1998-10-23 | Sony Corp | Acoustic transducer |
| JP2000138996A (en) * | 1998-10-30 | 2000-05-16 | Sony Corp | Speaker system |
| JP2000278792A (en) * | 1999-03-29 | 2000-10-06 | Sony Corp | Speaker and speaker unit |
| CN1652634A (en) * | 2004-02-06 | 2005-08-10 | 先锋株式会社 | Loudspeaker |
| JP2010263363A (en) * | 2009-05-01 | 2010-11-18 | Koichiro Akimoto | Loudspeaker device |
| CN201594909U (en) * | 2009-10-26 | 2010-09-29 | 北京七九七华音电子有限责任公司 | Loudspeaker magnetic circuit and loudspeaker |
| CN201854415U (en) * | 2009-12-21 | 2011-06-01 | 瑞声声学科技(深圳)有限公司 | Electromagnetic loudspeaker with double voice coils |
| EP3157267A1 (en) * | 2015-10-14 | 2017-04-19 | Music Group IP Ltd. | Loudspeaker |
| CN105812997A (en) * | 2016-03-14 | 2016-07-27 | 青岛海信电器股份有限公司 | Loudspeaker |
| CN105848064A (en) * | 2016-05-10 | 2016-08-10 | 青岛歌尔声学科技有限公司 | Dual-magnetic-gap magnetic path system and loudspeaker with same |
Non-Patent Citations (1)
| Title |
|---|
| SOWEI同轴扬声器;温格闫;《电子世界》;第6页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN208724199U (en) | 2019-04-09 |
| EP3448062A1 (en) | 2019-02-27 |
| EP3448062B1 (en) | 2019-12-18 |
| CN109429153A (en) | 2019-03-05 |
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