CN215420691U - Planar magnetic transducer and planar magnetic earphone - Google Patents
Planar magnetic transducer and planar magnetic earphone Download PDFInfo
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- CN215420691U CN215420691U CN202121633040.1U CN202121633040U CN215420691U CN 215420691 U CN215420691 U CN 215420691U CN 202121633040 U CN202121633040 U CN 202121633040U CN 215420691 U CN215420691 U CN 215420691U
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Abstract
The utility model discloses a planar magnetic transducer and a planar magnetic earphone, wherein the planar magnetic transducer comprises a vibrating diaphragm, a first vibrating diaphragm ring, a second vibrating diaphragm ring, a first magnetic circuit module and a second magnetic circuit module; the diaphragm comprises a substrate and an etching circuit connected with the substrate; the first diaphragm ring and the second diaphragm ring are respectively arranged on two sides of the diaphragm, the first diaphragm ring and the second diaphragm ring comprise PCB circuit boards, and circuits on the PCB circuit boards are electrically connected with the etching circuit; the first magnetic circuit module is arranged on one side, far away from the vibrating diaphragm, of the first vibrating diaphragm ring, and the second magnetic circuit module is arranged on one side, far away from the vibrating diaphragm, of the second vibrating diaphragm ring; the first magnetic circuit module and the second magnetic circuit module respectively comprise a structural part and a magnet connected with the structural part, and the first magnetic circuit module and the second magnetic circuit module are connected in a matched mode. The utility model has the advantages of high production efficiency and low cost on the premise of ensuring the product performance.
Description
Technical Field
The utility model relates to the technical field of earphones, in particular to a planar magnetic transducer and a planar magnetic earphone.
Background
The planar magnetic earphone has magnetic field parallel to the vibrating diaphragm and ampere force to drive the vibrating diaphragm via the etching circuit on the vibrating diaphragm. The advantage of plane magnetism earphone is that, the vibrating diaphragm size can be accomplished to be bigger than general moving coil earphone, simultaneously because by the etching circuit atress on the vibrating diaphragm, so the vibrating diaphragm atress is more even than the moving coil, more can not receive in theory to cut apart the vibration influence, can make more outstanding tone quality than ordinary moving coil earphone more easily. Meanwhile, the planar magnetic earphone has no high cost and low yield like an electrostatic earphone, and does not need special ear placing drive, so that the planar magnetic earphone is more convenient for mass production and is convenient for being connected with common equipment.
However, the existing planar magnetic earphones are generally complex in structure, tedious in manufacturing process, low in yield and difficult to control in cost. For example, the diaphragm design of the existing planar magnetic earphone adopts FPCB, which results in poor performance, or uses an etching circuit for bonding, which results in low productivity and low yield, so that the cost of the planar magnetic earphone is high.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides the planar magnetic transducer and the planar magnetic earphone, which have the advantages of high production efficiency and low cost on the premise of ensuring the product performance.
The technical scheme of the utility model is as follows:
a planar magnetic transducer comprises a vibrating diaphragm, a first vibrating diaphragm ring, a second vibrating diaphragm ring, a first magnetic circuit module and a second magnetic circuit module; the diaphragm comprises a substrate and an etching circuit fixedly connected to the substrate; the first diaphragm ring and the second diaphragm ring are respectively arranged on two sides of the diaphragm, the first diaphragm ring and the second diaphragm ring both comprise a PCB (printed circuit board), the PCB is provided with a signal input end, and a circuit on the PCB is electrically connected with the etching circuit; the first magnetic circuit module is arranged on one side, far away from the vibrating diaphragm, of the first vibrating diaphragm ring, and the second magnetic circuit module is arranged on one side, far away from the vibrating diaphragm, of the second vibrating diaphragm ring; the first magnetic circuit module and the second magnetic circuit module both comprise a structural part and a magnet connected with the structural part, the magnet comprises a plurality of strip-shaped sub-magnets which are arranged at equal intervals and have the same sides of magnetic poles, the magnetic pole directions of the strip-shaped sub-magnets are perpendicular to the plane where the substrate is located, the magnet on the first magnetic circuit module and the magnet on the second magnetic circuit module are symmetrically arranged along the plane where the substrate is located, the magnets repel each other, and the first magnetic circuit module and the second magnetic circuit module are connected in a matched mode.
The working principle of the utility model is as follows: during operation, the PCB circuit board that carries sound information and the etching circuit electric connection on the vibrating diaphragm of the signal of telecommunication through first vibrating diaphragm circle (or second vibrating diaphragm circle), the magnet in the first magnetic circuit module of vibrating diaphragm both sides and the second magnetic circuit module produces the magnetic field that parallels with the vibrating diaphragm, drives the vibrating diaphragm vibration through magnetic field to the ampere force of etching circuit, spreads out sound.
Compared with the prior art, the planar magnetic transducer only comprises the first magnetic circuit module, the second magnetic circuit module, the first diaphragm ring, the second diaphragm ring and the diaphragm, the parts are simple in structure and small in quantity, the production flow is effectively simplified, the manufacturing efficiency is effectively improved on the premise that the tone quality of the planar magnetic transducer is guaranteed, and the cost is reduced.
In a further technical scheme, the first magnetic circuit module and the second magnetic circuit module are connected through bolts, and the bolts penetrate through the vibrating diaphragm, the first vibrating diaphragm ring and the second vibrating diaphragm ring.
Through the arrangement, the planar magnetic transducer is convenient to mount, firm in fixation, detachable and convenient to maintain.
In a further aspect, the magnet is an N52 magnet.
By setting the magnet to be an N52 magnet, the magnetism is strong, the sensitivity of an upper etching circuit for capturing the diaphragm is higher, and the sound quality is better.
In a further technical scheme, the structural member is a light-cured resin structural member. In addition, the structural member is an integrally formed structural member.
The structural member is made of light-cured resin material, so that the rigidity is high and the weight is light; in addition, still set up the structure into integrated piece, simplified the production procedure, avoided loaded down with trivial details equipment, improve the yield.
In a further technical scheme, the substrate is a PET film or a PU film with the thickness of 1-50 um.
Through setting up the basement into 1-50 um's PET film or PU film, can change this parameter according to the actual performance demand of transducer, the practicality is stronger, satisfies multiple different demands.
Another aspect of the utility model provides a planar magnetic earphone comprising a planar magnetic transducer as described above.
The utility model has the beneficial effects that:
1. compared with the prior art, the planar magnetic transducer only comprises the first magnetic circuit module, the second magnetic circuit module, the first diaphragm ring, the second diaphragm ring and the diaphragm, the parts are simple in structure and small in number, the production flow is effectively simplified, the manufacturing efficiency is effectively improved and the cost is reduced on the premise of ensuring the tone quality of the planar magnetic transducer;
2. the first magnetic circuit module and the second magnetic circuit module are connected through the bolts, so that the planar magnetic transducer is convenient to mount, firm to fix, detachable and convenient to maintain;
3. the magnet is set to be the N52 magnet, so that the magnetism is strong, the sensitivity of an upper etching circuit for capturing the diaphragm is higher, and the tone quality is better;
4. the structural member is made of light-cured resin material, so that the rigidity is strong and the weight is light; in addition, the structural part is arranged into an integrated piece, so that the production flow is simplified, the complex assembly is avoided, and the yield is improved;
5. through setting up the basement into 1-50 um's PET film or PU film, can change this parameter according to the actual performance demand of transducer, the practicality is stronger, satisfies multiple different demands.
Drawings
FIG. 1 is an overall exploded view of a planar magnetic transducer according to an embodiment of the present invention;
FIG. 2 is an assembled cross-sectional view of a planar magnetic transducer according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a diaphragm according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first magnetic circuit module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a first magnetic circuit module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second magnetic circuit module according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a second magnetic circuit module according to an embodiment of the present invention.
Description of reference numerals:
10-a diaphragm; 11-a substrate; 12-etching the circuit; 20-a first diaphragm fixing ring; 30-a second diaphragm fixing ring; 40-a first magnetic circuit module; 41-structural parts of a first magnetic circuit module; 42-the magnet of the first magnetic circuit module; 50-a second magnetic circuit module; 51-structural members of the second magnetic circuit module; 52-magnets of the second magnetic circuit module.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Example (b):
as shown in fig. 1 to 7, a planar magnetic transducer includes a diaphragm 10, a first diaphragm ring 20, a second diaphragm ring 30, a first magnetic circuit module 40, and a second magnetic circuit module 50.
The diaphragm 10 includes a substrate 11 and an etching circuit 12 fixedly connected to the substrate 11. For example, the diaphragm 10 can apply an electrothermal film printed circuit process used in the fields of automobiles and home appliances to the diaphragm 10, and the PET or PU film with a thickness of 1-50um is used as the substrate 11, and silver (or good conductors such as copper, aluminum, gold, etc.) conductive paste is used as the printing coating for manufacturing, so that the backward process of manually pasting an etching circuit to the diaphragm by using a traditional planar magnetic speaker is replaced, the production difficulty is greatly reduced, the productivity is improved, the cost is reduced, and the performance and the quality control are improved.
The first magnetic circuit module 40 is disposed on a side of the first diaphragm ring 20 away from the diaphragm 10, and the second magnetic circuit module 50 is disposed on a side of the second diaphragm ring 30 away from the diaphragm 10. The first and second magnetic circuit modules 40 and 50 each include a structural member and a magnet connected to the structural member. For example, as shown in fig. 1 to 6, the structural member 41 of the first magnetic circuit module, the magnet 42 of the first magnetic circuit module, the structural member 51 of the second magnetic circuit module, and the magnet 52 of the second magnetic circuit module. The magnets comprise a plurality of strip-shaped sub-magnets which are arranged at equal intervals and have the same sides of magnetic poles, the magnetic pole directions of the strip-shaped sub-magnets are perpendicular to the plane of the substrate 11, the magnets on the first magnetic circuit module 40 and the magnets on the second magnetic circuit module 50 are symmetrically arranged along the plane of the substrate 11 and have magnetic repulsion, and the first magnetic circuit module 40 and the second magnetic circuit module 50 are connected in a matched mode. For example, the structural member may be manufactured by a 3D printer. For example, further, the DLP-3D printing technology with relatively low price is used for realizing a structural member which is generally high in process cost and needs to be composed of a plurality of parts, and the parts needing to be installed are effectively reduced.
The working principle of the utility model is as follows: as shown in fig. 1 to 7, in operation, an electrical signal carrying sound information is electrically connected to the etching circuit 12 on the diaphragm through the PCB of the first diaphragm ring 20 (or the second diaphragm ring 30), the magnets in the first magnetic circuit module 40 and the second magnetic circuit module 50 on both sides of the diaphragm 10 generate a magnetic field parallel to the diaphragm 10, and the ampere force applied to the etching circuit 12 by the magnetic field drives the diaphragm 10 to vibrate and transmit sound.
Compared with the prior art, as shown in fig. 1-7, the planar magnetic transducer of the utility model is only composed of the first magnetic circuit module 40, the second magnetic circuit module 50, the first diaphragm ring 20, the second diaphragm ring 30 and the diaphragm 10, the parts have simple structures and small quantity, the production flow is effectively simplified, the manufacturing efficiency is effectively improved and the cost is reduced on the premise of ensuring the tone quality of the planar magnetic transducer.
In another embodiment, the first magnetic circuit module 40 and the second magnetic circuit module 50 are bolted, and the bolts pass through the diaphragm 10, the first diaphragm ring 20, and the second diaphragm ring 30. Through the arrangement, the planar magnetic transducer is convenient to mount, firm in fixation, detachable and convenient to maintain. For example, the first magnetic circuit module 40 and the second magnetic circuit module 50 are fixed by six m2 screws.
In further embodiments, the magnet is an N52 magnet. By setting the magnet to be an N52 magnet, the magnetism is strong, the sensitivity of the upper etching circuit 12 that captures the diaphragm 10 is higher, and the sound quality is better.
In a further embodiment, as shown in fig. 2-7, the structural members (structural member 41 of the first magnetic circuit module, structural member 51 of the second magnetic circuit module) are light-cured resin structural members. In addition, the structural member is an integrally formed structural member. The structural member is made of light-cured resin material, so that the rigidity is high and the weight is light; in addition, still set up the structure into integrated piece, simplified the production procedure, avoided loaded down with trivial details equipment, improve the yield.
In further embodiments, the substrate 11 is a PET film or a PU film having a thickness of 1-50 um. Through setting up basement 11 to 1-50 um's PET film or PU film, can change this parameter according to the actual performance demand of transducer, the practicality is stronger, satisfies multiple different demands.
Another aspect of the utility model provides a planar magnetic earphone comprising a planar magnetic transducer as described above.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (7)
1. A planar magnetic transducer is characterized by comprising a vibrating diaphragm, a first vibrating diaphragm ring, a second vibrating diaphragm ring, a first magnetic circuit module and a second magnetic circuit module;
the diaphragm comprises a substrate and an etching circuit fixedly connected to the substrate;
the first diaphragm ring and the second diaphragm ring are respectively arranged on two sides of the diaphragm, the first diaphragm ring and the second diaphragm ring both comprise a PCB (printed circuit board), the PCB is provided with a signal input end, and a circuit on the PCB is electrically connected with the etching circuit;
the first magnetic circuit module is arranged on one side, far away from the vibrating diaphragm, of the first vibrating diaphragm ring, and the second magnetic circuit module is arranged on one side, far away from the vibrating diaphragm, of the second vibrating diaphragm ring; the first magnetic circuit module and the second magnetic circuit module both comprise a structural part and a magnet connected with the structural part, the magnet comprises a plurality of strip-shaped sub-magnets which are arranged at equal intervals and have the same sides of magnetic poles, the magnetic pole directions of the strip-shaped sub-magnets are perpendicular to the plane where the substrate is located, the magnet on the first magnetic circuit module and the magnet on the second magnetic circuit module are symmetrically arranged along the plane where the substrate is located, the magnets repel each other, and the first magnetic circuit module and the second magnetic circuit module are connected in a matched mode.
2. The planar magnetic transducer of claim 1, wherein the first and second magnetic circuit modules are bolted, and the bolts pass through the diaphragm, the first diaphragm ring, and the second diaphragm ring.
3. The planar magnetic transducer of 1, wherein the magnet is an N52 magnet.
4. The planar magnetic transducer of 1, wherein the structure is a photo-cured resin structure.
5. The planar magnetic transducer of claim 4, wherein the structural member is an integrally formed structural member.
6. The planar magnetic transducer of 1, wherein the substrate is a PET film or a PU film with a thickness of 1-50 um.
7. A planar magnetic earphone comprising a planar magnetic transducer according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121633040.1U CN215420691U (en) | 2021-07-16 | 2021-07-16 | Planar magnetic transducer and planar magnetic earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121633040.1U CN215420691U (en) | 2021-07-16 | 2021-07-16 | Planar magnetic transducer and planar magnetic earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215420691U true CN215420691U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121633040.1U Active CN215420691U (en) | 2021-07-16 | 2021-07-16 | Planar magnetic transducer and planar magnetic earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215420691U (en) |
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2021
- 2021-07-16 CN CN202121633040.1U patent/CN215420691U/en active Active
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