CN110933561A - Loudspeaker with extremely small magnetic gap and assembling process - Google Patents
Loudspeaker with extremely small magnetic gap and assembling process Download PDFInfo
- Publication number
- CN110933561A CN110933561A CN201911017995.1A CN201911017995A CN110933561A CN 110933561 A CN110933561 A CN 110933561A CN 201911017995 A CN201911017995 A CN 201911017995A CN 110933561 A CN110933561 A CN 110933561A
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- CN
- China
- Prior art keywords
- voice coil
- base frame
- loudspeaker
- magnetic gap
- support arm
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- 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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- 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
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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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
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
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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
- H04R9/025—Magnetic circuit
- H04R9/027—Air gaps using a magnetic fluid
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention relates to the field of loudspeakers, and provides a loudspeaker with a minimum magnetic gap and an assembly process. A minimal magnetic gap speaker comprising: the vibration system also comprises a conductive support arm arranged between the adjacent side magnets, and the conductive support arm is connected between one side of the voice coil, which is far away from the vibrating diaphragm, and the pedestal; the electrically conductive support arm includes: the voice coil is connected with the voice coil, the positioning part is fixedly connected with the base frame, and the vibrating part is connected between the connecting part and the positioning part; and the two adjacent connecting parts are respectively connected with the two leads of the voice coil. The invention is provided with the conductive supporting arms for additionally supporting the four R corners of the base frame and the R corners of the voice coil, thereby avoiding the noise phenomenon of the voice coil rubbing the coil caused by the polarization or assembly error of a vibration system.
Description
Technical Field
The invention relates to the field of loudspeakers, in particular to a loudspeaker with a small magnetic gap and an assembly process.
Background
The speaker module is an electroacoustic transducer, and is often used in electronic products.
Currently, most acoustic devices have suspended leads within the speaker to connect external circuitry via the leads. In such products, the lead wire can generate a traction effect on the product in the vibration process due to the arrangement of the lead wire. The pulling force of the wire will cause the wire side of the product to experience a force that is not the same as the force experienced by the non-wire side, and thus the amplitudes of the two sides will be different. That is, the lead-side amplitude is small and the non-lead-side amplitude is large, thereby causing product polarization. The problem of polarization will further cause the problems of broken line, bad listening, etc. of the product. In addition, when the lead wire of the traditional loudspeaker is welded with an external circuit, the lead wire needs to be led out from the position of the voice coil to the edge of the base frame, and the assembling position of the voice coil is likely to move due to the fact that the lead wire is pulled, so that the voice coil is positioned and deviated, the loudspeaker can generate polarization when in use, and therefore noise phenomenon occurs. The magnetic gap of the loudspeaker on the existing market is large, and after the magnetic gap is reduced, the voice coil friction ring generates noise due to polarization or assembly errors of a vibration system.
Disclosure of Invention
The invention provides a loudspeaker with a small magnetic gap and an assembly process, which can effectively solve the problems.
The invention is realized by the following steps:
a very small magnetic gap speaker comprising: the vibration system also comprises a conductive support arm arranged between the adjacent side magnets, and the conductive support arm is connected between one side of the voice coil, which is far away from the vibrating diaphragm, and the pedestal; the electrically conductive support arm includes: the voice coil is connected with the voice coil, the positioning part is fixedly connected with the base frame, and the vibrating part is connected between the connecting part and the positioning part; and the two adjacent connecting parts are respectively connected with the two leads of the voice coil.
As a further improvement, the central magnet and the central pole piece are provided with notch areas at four corners.
As a further improvement, the vibrating portion has a curved structure.
As a further improvement, the curved structure is laterally serpentine.
As a further improvement, the positioning part is provided with a limiting structure, and the base frame is provided with a limiting block matched with the limiting structure.
An assembling process of a loudspeaker with a small magnetic gap comprises the following steps:
s1, applying glue on a horizontal plane close to the limiting block at the corner of the base frame, and positioning and buckling the conductive supporting arm on the base frame;
s2, gluing the connecting part of the conductive supporting arm, mounting the voice coil into the base frame, and bonding the voice coil with the connecting part;
s3, welding the voice coil lead on the connecting part of the conductive supporting arm, gluing the middle surface of the vibrating diaphragm, gluing the vibrating diaphragm on the base frame, bonding the vibrating diaphragm and the base frame, and installing the magnetic circuit system into the base frame to complete the assembly of the loudspeaker.
The invention has the beneficial effects that: the invention is provided with the conductive supporting arms for additionally supporting the four R corners of the base frame and the R corners of the voice coil, thereby avoiding the noise phenomenon of the voice coil rubbing the coil caused by the polarization or assembly error of a vibration system. The lead wire of the voice coil is bonded to the connecting part of the conductive supporting arm, so that the external connection distance of the lead wire is shortened, the positioning precision of the voice coil is higher, and the anti-vibration effect is better; and the conductive support arm replaces the extended lead wire to be used as a connecting piece for conducting the circuit, so that the overall strength is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is an exploded view of the overall structure provided by the embodiment of the present invention.
Fig. 2 is a schematic view of a part of the structure provided by the embodiment of the present invention.
Fig. 3 is a sectional view and a partially enlarged view of the entire structure provided by the embodiment of the present invention.
Fig. 4 is a schematic diagram of a structure of a conductive support arm according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a base frame according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of an assembly of a conductive support arm and a voice coil according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a central pole piece according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of a central magnet structure according to an embodiment of the present invention.
Fig. 9 is a schematic diagram of the conductive support arm and the voice coil soldering according to the embodiment of the invention.
Fig. 10 is a partial enlarged view of a relief area provided in accordance with an embodiment of the present invention.
In the figure: 1. the center magnet 2, the center pole piece 11/21, the gap area 3, the edge magnet 4, the voice coil 5, the diaphragm 6, the conductive support arm 61, the connection part 62, the vibration part 63, the positioning part 631, the limit structure 7, the base frame 71, the limit block 8, the magnetic cover 9, the welding point A, the gap B between the center magnet and the voice coil: gap between voice coil and edge magnet
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 10, a speaker with a very small magnetic gap includes: the vibration system comprises a voice coil 4 and a vibrating diaphragm 5, and further comprises a conductive support arm 6 arranged between the adjacent side magnets 3, wherein the conductive support arm 6 is connected between one side of the voice coil 4, which is far away from the vibrating diaphragm 5, and the pedestal 7; the conductive support arm 6 includes: a connecting portion 61 connected to the voice coil 4, a positioning portion 63 fixed to the base frame 7, and a vibrating portion 62 connecting the connecting portion 61 and the positioning portion 63; two adjacent connecting portions 61 are connected to two leads of the voice coil 4, respectively. The invention is provided with the conductive supporting arm 6 which is used for increasing the support between the four R angles of the base frame 7 and the R angle of the voice coil 4, thereby avoiding the noise phenomenon that the voice coil 4 rubs the coil due to the polarization or assembly error of a vibration system. The lead of the voice coil 4 is connected to the connecting part 61 of the conductive supporting arm 6, so that the external connection distance of the lead is shortened, the positioning precision of the voice coil 4 is higher, and the vibration resistance effect is better; and the conductive support arm 6 replaces an epitaxial lead wire to be used as a connecting piece for conducting a circuit, so that the overall strength is improved.
Referring to fig. 7 to 8, the central magnet 1 and the central pole piece 2 are provided with notch regions 11/21 at four corners, and the notch regions 11/21 are provided to increase the amount of exhaust gas during vibration.
Referring to fig. 3, a gap a between the center magnet 1 and the voice coil 4 is preferably 0.03mm to 0.07 mm; in this embodiment, the gap a between the center magnet 1 and the voice coil 4 is 0.05 mm.
Referring to fig. 3, a gap B between the voice coil 4 and the side magnet 3 is preferably 0.05mm to 0.09 mm; in this embodiment, the gap B between the voice coil 4 and the edge magnet 3 is 0.07 mm.
Referring to fig. 2, the magnetic circuit system of the present embodiment is a five-magnet magnetic circuit system, i.e., a central magnet 1 and four edge magnets 3, and the number of the conductive support arms 6 is 4, and the conductive support arms are respectively connected to the corners of the base frame 7. The conductive support arm 6 is used as a stable auxiliary part for eliminating noise and also as a connector for the wire feeding and discharging of the voice coil 4. In the practical use process of the embodiment, the power-on work of the loudspeaker can be realized by electrically connecting the conductive supporting arm 6; and the arrangement of the four conductive supporting arms 6 provides various wiring options of incoming and outgoing lines, and the practicability of the invention is greatly improved.
Referring to fig. 4, the vibration part 62 has a curved structure, and the curved structure has a transverse serpentine shape, and the vibration part 62 is arranged to improve the stability of the vibration system.
Referring to fig. 4 to 5, the positioning portion 63 is provided with a limiting structure 631, and the base frame 7 is provided with a limiting block 71 engaged with the limiting structure 631. The arrangement of the limiting block 71 improves the installation simplicity and stability of the conductive supporting arm 6.
Referring to fig. 6 and 9, the connection portion 61 is connected to the voice coil 4 and the connection portion 61 extends to the inner side of the voice coil 4, and the connection portion 61 is provided with a space for welding the conductive support arm 6 and the voice coil 4 together by using a welding head to generate a welding spot 9, so that the connection portion 61 extends a little bit toward the central magnet 1.
The invention provides an assembly process of a loudspeaker with a minimum magnetic gap, which comprises the following steps:
s1, applying glue on a horizontal plane close to the limiting block 71 at the corner of the base frame 7, and positioning and buckling the conductive support arm 6 on the base frame 7;
s2, gluing the connecting part 61 of the conductive supporting arm 6, installing the voice coil 4 into the base frame 7, and bonding the voice coil 4 with the connecting part 61;
and S3, welding the lead of the voice coil 4 on the connecting part 61, applying glue on the middle surface of the vibrating diaphragm 5, applying edge glue on the base frame 7, bonding the vibrating diaphragm 5 and the base frame 7, and installing the magnetic circuit system into the base frame 7 to complete the assembly of the loudspeaker.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A very small magnetic gap speaker comprising: the vibration generator comprises a magnetic circuit system, a vibration system and a base frame, wherein the magnetic circuit system comprises a central magnet, a central pole piece and side magnets, and the vibration system comprises a voice coil and a vibrating diaphragm; the electrically conductive support arm includes: the voice coil is connected with the voice coil, the positioning part is fixedly connected with the base frame, and the vibrating part is connected between the connecting part and the positioning part; and the two adjacent connecting parts are respectively connected with the two leads of the voice coil.
2. The loudspeaker of claim 1, wherein the central magnet and the central pole piece are provided with notched areas at each of four corners.
3. The loudspeaker of claim 1, wherein the vibrating portion is a curved structure.
4. A loudspeaker according to claim 3, wherein the curved structure is laterally serpentine.
5. The loudspeaker according to claim 1, wherein the positioning portion is provided with a limiting structure, and the base frame is provided with a limiting block matched with the limiting structure.
6. An assembling process of a loudspeaker with a minimum magnetic gap is characterized by comprising the following steps:
s1, applying glue on a horizontal plane close to the limiting block at the corner of the base frame, and positioning and buckling the conductive supporting arm on the base frame;
s2, gluing the connecting part of the conductive supporting arm, mounting the voice coil into the base frame, and bonding the voice coil with the connecting part;
s3, welding the voice coil lead on the connecting part of the conductive supporting arm, gluing the middle surface of the vibrating diaphragm, gluing the vibrating diaphragm on the base frame, bonding the vibrating diaphragm and the base frame, and installing the magnetic circuit system into the base frame to complete the assembly of the loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911017995.1A CN110933561A (en) | 2019-10-24 | 2019-10-24 | Loudspeaker with extremely small magnetic gap and assembling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911017995.1A CN110933561A (en) | 2019-10-24 | 2019-10-24 | Loudspeaker with extremely small magnetic gap and assembling process |
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| Publication Number | Publication Date |
|---|---|
| CN110933561A true CN110933561A (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911017995.1A Pending CN110933561A (en) | 2019-10-24 | 2019-10-24 | Loudspeaker with extremely small magnetic gap and assembling process |
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| Country | Link |
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| CN (1) | CN110933561A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114125663A (en) * | 2020-08-25 | 2022-03-01 | 华为技术有限公司 | Electroacoustic transducer, loudspeaker module and electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140247960A1 (en) * | 2011-12-20 | 2014-09-04 | Aac Acoustic Technologies (Shenzhen) Co., Ltd. | Electromagnetic transducer |
| CN205545913U (en) * | 2016-01-28 | 2016-08-31 | 瑞声光电科技(常州)有限公司 | Micro sound production device |
| CN205961438U (en) * | 2016-07-20 | 2017-02-15 | 瑞声科技(新加坡)有限公司 | Micro sound production device |
| CN206559634U (en) * | 2017-03-15 | 2017-10-13 | 歌尔股份有限公司 | Microspeaker and the electronic installation comprising the Microspeaker |
| CN109640232A (en) * | 2018-12-20 | 2019-04-16 | 歌尔股份有限公司 | Loudspeaker |
| CN109862478A (en) * | 2019-03-27 | 2019-06-07 | 深圳市信维声学科技有限公司 | A kind of Microspeaker |
-
2019
- 2019-10-24 CN CN201911017995.1A patent/CN110933561A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140247960A1 (en) * | 2011-12-20 | 2014-09-04 | Aac Acoustic Technologies (Shenzhen) Co., Ltd. | Electromagnetic transducer |
| CN205545913U (en) * | 2016-01-28 | 2016-08-31 | 瑞声光电科技(常州)有限公司 | Micro sound production device |
| CN205961438U (en) * | 2016-07-20 | 2017-02-15 | 瑞声科技(新加坡)有限公司 | Micro sound production device |
| CN206559634U (en) * | 2017-03-15 | 2017-10-13 | 歌尔股份有限公司 | Microspeaker and the electronic installation comprising the Microspeaker |
| CN109640232A (en) * | 2018-12-20 | 2019-04-16 | 歌尔股份有限公司 | Loudspeaker |
| CN109862478A (en) * | 2019-03-27 | 2019-06-07 | 深圳市信维声学科技有限公司 | A kind of Microspeaker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114125663A (en) * | 2020-08-25 | 2022-03-01 | 华为技术有限公司 | Electroacoustic transducer, loudspeaker module and electronic equipment |
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Application publication date: 20200327 |
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| RJ01 | Rejection of invention patent application after publication |