CN109788406B - Magnetic circuit system and sound production device - Google Patents
Magnetic circuit system and sound production device Download PDFInfo
- Publication number
- CN109788406B CN109788406B CN201811613171.6A CN201811613171A CN109788406B CN 109788406 B CN109788406 B CN 109788406B CN 201811613171 A CN201811613171 A CN 201811613171A CN 109788406 B CN109788406 B CN 109788406B
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- magnet
- side wall
- magnetic circuit
- circuit system
- washer
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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
-
- 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
-
- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention relates to a magnetic circuit system and a sound generating device. The magnetic circuit system comprises a basin frame with a bearing part arranged at the central position, a first magnet and a first washer which are sequentially arranged on one surface of the bearing part, a second magnet and a second washer which are sequentially arranged on one surface of the bearing part, which is far away from the first magnet, wherein the S pole of the first magnet is opposite to the N pole of the second magnet; the basin stand is further provided with a side wall located on the periphery of the bearing part, a gap is formed between the first magnet and the second magnet and the side wall, and the outer surfaces of the first washer and the second washer are not higher than the end surface of the basin stand formed by the surrounding of the side wall.
Description
Technical Field
The invention belongs to the technical field of sound-electricity transduction, and particularly relates to a magnetic circuit system and a sound generating device.
Background
The loudspeaker is a transducer for converting an electric signal into an acoustic signal, and audio electric energy enables a cone or a diaphragm to vibrate and generate resonance with surrounding air to make sound through electromagnetic, piezoelectric or electrostatic effects. The loudspeaker is the weakest component in the audio equipment, and is the most important component for the audio effect.
The existing loudspeaker usually adopts a washer and a frame structure in order to improve the shape of the magnetic line inside, the washer is usually adhered to the magnet, and the frame has the functions of correcting the magnetic line and supporting the magnet. In a scene of applying a plurality of loudspeakers, the magnetic field intensity generated by a magnetic circuit system in a conventional single loudspeaker is limited, and the loudness and other performances of the loudspeaker are difficult to be improved continuously after being improved to a certain degree; and under the condition that part of the loudspeakers are damaged or do not work, when only a single loudspeaker works, a magnetic circuit system of the loudspeaker which does not work is idle, so that the waste of resources is caused.
Therefore, there is a need for an improved magnetic circuit system.
Disclosure of Invention
It is an object of the present invention to provide a new solution for a magnetic circuit system.
According to one aspect of the invention, a magnetic circuit system is provided, which comprises a basin frame, a first magnet and a first washer, wherein the basin frame is provided with a bearing part at the central position, the first magnet and the first washer are sequentially arranged on one surface of the bearing part, the second magnet and the second washer are sequentially arranged on one surface of the bearing part, which is far away from the first magnet, and the S pole of the first magnet is opposite to the N level of the second magnet;
the basin stand is further provided with a side wall located on the periphery of the bearing part, a gap is formed between the first magnet and the second magnet and the side wall, and the outer surfaces of the first washer and the second washer are not higher than the end surface of the basin stand formed by the surrounding of the side wall.
Optionally, the side wall is as wide as a gap between the first magnet or/and the second magnet.
Optionally, the first magnet and the second magnet are symmetrically arranged, or/and the first washer and the second washer are symmetrically arranged.
Optionally, at least one through hole is formed in the bearing part, a colloid is arranged in at least one through hole, and the first magnet and the second magnet are connected through the colloid.
Optionally, the bearing part is partially connected with the side wall and is manufactured by an integral molding process.
Or, the basin frame includes first basin frame and second basin frame, first basin frame includes the lateral wall, the second basin frame includes the portion of bearing, first basin frame with the assembly of second basin frame makes the portion of bearing is located the lateral wall is inboard.
Optionally, the frame further comprises a fixing part located at the outer side of the side wall, and the fixing part is configured to be connected with an external structure to fix the magnetic circuit system.
Optionally, the basin frame includes first basin frame with the second basin frame, the second basin frame includes a plurality ofly the fixed part, it is a plurality of the fixed part symmetry sets up the supporting part outside, be provided with on the lateral wall of a terminal surface of first basin frame with the first breach of fixed part one-to-one, first basin frame passes through first breach card is established make on the second basin frame the fixed part with the supporting part is located respectively the inboard and the outside of lateral wall.
Optionally, the second basin frame further comprises a connecting portion corresponding to the fixing portion one to one, the fixing portion is fixedly connected with the bearing portion through the connecting portion, and the connecting portion is further fixedly connected with the side wall of the first notch.
Optionally, two second notches are arranged on the side wall of each of the two end faces of the frame, and the second notches are configured for the lead wires of the voice coil to enter or/and exit.
According to another aspect of the present invention, there is also provided a sound generating device, comprising a housing and the above-mentioned magnetic circuit system disposed in the housing
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is an exploded view of the structure of some embodiments of the present invention.
FIG. 2 is a schematic cross-sectional structural view of some embodiments of the present invention.
Fig. 3 is a partially enlarged schematic view at a in fig. 2.
Fig. 4 is a partially enlarged schematic view at B in fig. 2.
FIG. 5 is a schematic diagram of a construction of a basin stand in some embodiments of the invention.
FIG. 6 is an exploded view of the structure of a basin stand in some embodiments of the invention.
In the figure: 1 basin frame, 11 first basin frame, 12 first breach, 13 second breach, 14 second basin frames, 15 bearing part, 16 fixed part, 17 through-holes, 18 lateral walls, 19 connecting portion, 21 first magnet, 22 second magnet, 31 first china department, 32 second china department 41 first voice coil loudspeaker voice coil, 42 second voice coil loudspeaker voice coil, 43 voice coil loudspeaker voice coil lead wire, 51 first vibrating diaphragm subassembly, 52 second vibrating diaphragm subassembly.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The magnetic circuit system provided by the invention, in some embodiments and with reference to fig. 1 to 4, comprises a frame 1, a first magnet 21, a first washer 31, a second magnet 22 and a second washer 32.
The basin stand 1 is provided with a bearing part 15 at the central position. The basin stand 1 is usually made of magnetic conductive material and used for correcting a magnetic field and utilizing magnetic field energy to the maximum extent. The first magnet 21 and the first washer 31 are provided in this order on one surface of the carrier 15. The second magnet 22 and the second washer 32 are sequentially disposed on a surface of the carrier 15 facing away from the first magnet 21. Further, both sides of the first magnet 21 may be fixed to the carrying portion 15 and the first washer 31 by bonding or the like; both sides of the second magnet 22 may be fixed to the carrier part 15 and the second washer 32 by means of adhesive bonding or the like.
The S pole of the first magnet 21 faces the N pole of the second magnet 22. The first magnet 21 and the second magnet 22 are arranged in a stacked mode through the bearing part 15, opposite poles of the first magnet and the second magnet are opposite, the first magnet and the second magnet attract each other, and fixing stability of the bearing part 15 of the two magnets can be improved; in addition, the loudspeaker has an effect of enhancing the magnetic field intensity, improves the overall magnetic field intensity, and can effectively improve the acoustic performance of the loudspeaker.
The frame 1 also has side walls 18 at the periphery of the carrier 15. The first magnet 21 and the second magnet 22 each have a gap with the side wall 18, forming a magnetic gap of the magnetic circuit.
The outer surfaces of the first washer 31 and the second washer 32 are not higher than the end surface of the basin stand 1 formed by the side wall 18. As will be appreciated by those skilled in the art, washers are typically sized to cover the magnet. The first washer 31 and the second washer 32 also have gaps with the side wall 18, respectively, and also form magnetic gaps of the magnetic circuit system.
When the magnetic circuit system is used, the first voice coil 41 and the second voice coil 42 can respectively extend into the magnetic gap from the two end surfaces of the basin frame 1 to respectively form matching with the corresponding magnet and washer, and are respectively connected with the first vibrating diaphragm component 51 and the second vibrating diaphragm component 52, so that the loudspeaker applying the magnetic circuit system can realize double-sided sound production; in the case where only a single voice coil is energized or one voice coil is damaged, it is also possible to generate sound on one side.
The two magnets are stacked, so that the magnetic field intensity is enhanced, a loudspeaker applying the invention can obtain better acoustic performance, the loudness of sound is obviously improved, a better bass effect is achieved during low-frequency vibration, and the utilization rate of the magnetic field is improved. After the currents of the two voice coils are respectively controlled, a certain stereo sound effect can be generated. On the other hand, the utilization rate of the structure of the invention on the basin frame 1 is greatly improved, the basin frame 1 can be almost all or most of the mass used for improving and correcting the magnetic field, the magnetic field intensity corrected on the unit mass of the bearing part 15 is higher, compared with the magnetic circuit system in the prior art, the weight proportion of the basin frame 1 can be greatly reduced, and the design of light weight is facilitated.
In some embodiments, the gap between the side wall 18 and the first magnet 21 or/and the second magnet 22 is of equal width, i.e. the end face of the frame 1 is shaped to match the first magnet 21 or/and the second magnet 22.
In some embodiments, referring to fig. 1, the first magnet 21 and the second magnet 22 are symmetrically disposed, that is, although the magnetic poles of the first magnet 21 and the second magnet 22 are arranged in the forward direction, the first magnet 21 and the second magnet 22 have the same size. Further, the first washer 31 and the second washer 32 are also symmetrically arranged. Furthermore, the two end faces of the basin stand 1 are consistent in size and are symmetrically arranged.
In some embodiments, referring to fig. 1 and 5, the carrier 15 is provided with at least one through hole 17. When first magnet 21 and second magnet 22 pass through the form of viscose and bearing part 15 fixed connection, when the rubber coating volume of one side is bigger than normal, the glue of this side can be held by through-hole 17 under first magnet 21 or the extrusion of second magnet 22 to the opposite side is given in the transmission, makes the glue distribute evenly relatively, compensates the bonding strength of opposite side. On the other hand, the colloid is contained in at least one through hole 17 to connect the first magnet 21 and the second magnet 22 on the two sides of the bearing surface, the first magnet 21 and the second magnet 22 are directly bonded, and the bonding force is superposed on the effect of the attraction acting force, so that the magnets can be better fixed on the bearing part 15 and can be kept stable.
In some embodiments, referring to fig. 5, the through-hole 17 may be circular. In other embodiments, the holes may have other shapes, such as square, diamond, etc., and the present invention is not limited thereto.
In some embodiments, referring to fig. 5, the through holes 17 are symmetrically arranged on the carrying portion 15 of the frame 1. When there is one through hole 17, the through hole 17 may be provided at a central position of the bearing portion 15. Further, the plurality of through holes 17 may be disposed on a center line of the carrier 15 along a straight line or arranged on the carrier 15 in a matrix, which is not limited in the present application.
In some embodiments, the carrying portion may be partially connected with the side wall and made by an integral molding process, and the frame 1 is made by an integral molding process.
In some embodiments, referring to fig. 5 and 6, the frame 1 can include a first frame 11 and a second frame 14. The second frame 14 comprises a carrier 15. The first frame 11 includes a side wall 18. The second frame 14 is assembled with the first frame 11 such that the carrier 15 is located inside the side wall 18.
In some embodiments, referring to fig. 5 and 6, the frame 1 can further include a fixation portion 16. The securing portion 16 is located outside the side wall 18. The fixing portion 16 is used to fix the magnetic circuit system of the present invention, such as a housing of a speaker, in cooperation with an external structure. The matching mode can be through structural style such as bonding, hot melt, joint, this application is not restricted to this.
In some embodiments, referring to fig. 5 and 6, the frame 1 includes a first frame 11 and a second frame 14. The second frame 14 can include a plurality of fixing portions 16, and the plurality of fixing portions 16 are symmetrically arranged outside the bearing portion 15. The side wall 18 of the first frame 11 is provided with first notches 12 corresponding to the fixing portions 16 on one end face, and the first frame 11 can be clamped on the first frame 14 through the first notches 12 to enable the fixing portions 16 and the bearing portions 15 to be located on the inner side and the outer side of the side wall 18 respectively. Further, in some embodiments, the defect of the first gap 12 can be filled by a patch after the first frame 11 and the second frame 14 are fixedly connected; when the existence of the defect of the first notch 12 does not affect the matching between the magnetic circuit system and the voice coil, the defect may not be filled, and a person skilled in the art may select the defect as needed, which is not limited in the present application.
In some embodiments, referring to fig. 5 and 6, the second frame 14 further includes a connecting portion 19 in one-to-one correspondence with the fixing portion 16. The fixing portions 16 are fixedly connected with the bearing portion 15 through the connecting portions 19 in a one-to-one correspondence manner, and the connecting portions are also fixedly connected with the side walls at the first notches 12, so that the fixing portions 16 and the bearing portion 15 are respectively located at the inner sides and the outer sides of the side walls 18.
Further, the supporting portion 15, the fixing portion 16 and the connecting portion 19 may be integrally formed. The structure of the basin frame is simple and compact, and the basin frame is convenient to process, and the first basin frame 1 can be directly formed by punching a plate; the second frame 14 can be made of a plate material and can be wound into a ring shape by a die after being cold cut into a sheet material; and assembling and fixing the formed first frame 11 and the second frame 14. The fixing modes of the first basin frame 11 and the second basin frame 14 can adopt modes such as viscose and clamping to be connected and fixed, and compared with welding, the deformation caused by the fact that the formed structure of the basin frame is not damaged can be avoided. Of course, in other embodiments, the annular frame 1 and the central frame 2 may be integrally formed, and the present application is not limited thereto.
In some embodiments, the magnet needs to have a gap with the side wall 18 of the basin stand 1 to form a magnetic gap, and referring to fig. 1 and 5, the size of the bearing part 15 can be matched with the size of the magnet, and a gap is formed between the bearing part 15 and the side wall 18, so that the bearing part 15 is only partially connected with the side wall 18, and an hollowed-out structure is formed between the bearing part 15 and the side wall 18 to better reduce the weight of the basin stand 1. On the other hand, the hollow structure can better balance the air pressure on two sides of the bearing part 21, and the acoustic performance of the loudspeaker is improved.
In some embodiments, referring to fig. 5 and 6, two second notches 13 are provided on the side wall 18 of each of the two end faces of the frame 1, and the second notches 13 are used for the lead wires 43 of the voice coil to enter or/and exit. Furthermore, the size and the shape of the second notch 13 are based on the fact that the voice coil lead 43 does not make friction contact with the side wall 18 of the basin frame 1 in the vibration process of the voice coil, so that the service life of the voice coil lead 43 is prolonged, and the voice coil lead is prevented from being broken; the dragging of the voice coil caused by the voice coil lead 43 is also reduced, and the acoustic performance is improved.
According to another aspect of the present invention, the present invention further provides a sound generating device, referring to fig. 1 and 2, comprising a housing and the above-mentioned magnetic circuit system disposed in the housing.
Further, the sound generating device may be a speaker or other device capable of generating sound.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (8)
1. A magnetic circuit system is characterized by comprising a basin stand, a first magnet and a first washer, wherein the center of the basin stand is provided with a bearing part, one surface of the bearing part is sequentially provided with the first magnet and the first washer, one surface of the bearing part, which is far away from the first magnet, is sequentially provided with the second magnet and the second washer, and the S pole of the first magnet is opposite to the N level of the second magnet;
the basin stand is further provided with a side wall positioned on the periphery of the bearing part, a gap is formed between the first magnet and the side wall and between the second magnet and the side wall, and the outer surfaces of the first washer and the second washer are not higher than the end surface of the basin stand formed by the side wall in a surrounding mode;
the basin frame comprises a first basin frame and a second basin frame, the first basin frame comprises the side wall, the second basin frame comprises the bearing part, the second basin frame comprises a plurality of fixing parts, the fixing parts are symmetrically arranged on the outer side of the bearing part, first notches in one-to-one correspondence with the fixing parts are arranged on the side wall of one end face of the first basin frame, and the first basin frame is clamped on the second basin frame through the first notches so that the bearing part and the fixing parts are respectively positioned on the inner side and the outer side of the side wall; the bearing part is locally connected with the side wall, and a hollow structure is formed between the bearing part and the side wall.
2. A magnetic circuit system according to claim 1, wherein the side wall is as wide as the gap between the first magnet and/or the second magnet.
3. The magnetic circuit system according to claim 1, wherein the first magnet and the second magnet are symmetrically arranged, or/and the first washer and the second washer are symmetrically arranged.
4. The magnetic circuit system according to claim 1, wherein the carrier portion has at least one through hole, a glue is disposed in at least one through hole, and the first magnet and the second magnet are connected by the glue.
5. The magnetic circuit system according to claim 1, wherein the fixing portion is located outside the side wall, the fixing portion being configured for fixing the magnetic circuit system in connection with an external structure.
6. The magnetic circuit system according to claim 1, wherein the second frame further includes a connecting portion corresponding to the fixing portion, the fixing portion is fixedly connected to the bearing portion through the connecting portion, and the connecting portion is further fixedly connected to the side wall at the first notch.
7. The magnetic circuit system according to claim 1, wherein both end surfaces of the frame are provided with two second notches on the side walls, the second notches being configured for the entry and/or exit of voice coil leads.
8. A sound generating device comprising a housing and the magnetic circuit system of any one of claims 1 to 7 disposed in the housing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811613171.6A CN109788406B (en) | 2018-12-27 | 2018-12-27 | Magnetic circuit system and sound production device |
| PCT/CN2019/109007 WO2020134285A1 (en) | 2018-12-27 | 2019-09-29 | Magnetic circuit system and sound producing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811613171.6A CN109788406B (en) | 2018-12-27 | 2018-12-27 | Magnetic circuit system and sound production device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109788406A CN109788406A (en) | 2019-05-21 |
| CN109788406B true CN109788406B (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811613171.6A Active CN109788406B (en) | 2018-12-27 | 2018-12-27 | Magnetic circuit system and sound production device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109788406B (en) |
| WO (1) | WO2020134285A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109714656B (en) * | 2018-12-27 | 2020-05-29 | 歌尔股份有限公司 | Basin stand assembly and sound production device |
| CN109788406B (en) * | 2018-12-27 | 2020-09-18 | 歌尔股份有限公司 | Magnetic circuit system and sound production device |
| WO2021128043A1 (en) * | 2019-12-25 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Loudspeaker capable of double-sided sound production |
| CN111327999B (en) * | 2020-03-05 | 2021-02-19 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
| CN112261551B (en) * | 2020-09-30 | 2021-06-11 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| CN114143680A (en) * | 2020-12-24 | 2022-03-04 | 东莞顺合丰电业有限公司 | Double-sided loudspeaker |
| CN114501245B (en) * | 2021-06-02 | 2023-06-09 | 北京荣耀终端有限公司 | Kernel, loudspeaker module and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204046805U (en) * | 2014-08-07 | 2014-12-24 | 江西联创宏声电子有限公司 | A kind of electroacoustic transducer of tow sides sounding |
| CN206118013U (en) * | 2016-09-26 | 2017-04-19 | 常州阿木奇声学科技有限公司 | Loudspeaker |
| CN108882089A (en) * | 2018-06-29 | 2018-11-23 | 维沃移动通信有限公司 | A kind of receiver and mobile terminal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101187510B1 (en) * | 2011-12-14 | 2012-10-02 | 부전전자 주식회사 | High power micro-speaker |
| CN109788406B (en) * | 2018-12-27 | 2020-09-18 | 歌尔股份有限公司 | Magnetic circuit system and sound production device |
-
2018
- 2018-12-27 CN CN201811613171.6A patent/CN109788406B/en active Active
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2019
- 2019-09-29 WO PCT/CN2019/109007 patent/WO2020134285A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204046805U (en) * | 2014-08-07 | 2014-12-24 | 江西联创宏声电子有限公司 | A kind of electroacoustic transducer of tow sides sounding |
| CN206118013U (en) * | 2016-09-26 | 2017-04-19 | 常州阿木奇声学科技有限公司 | Loudspeaker |
| CN108882089A (en) * | 2018-06-29 | 2018-11-23 | 维沃移动通信有限公司 | A kind of receiver and mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109788406A (en) | 2019-05-21 |
| WO2020134285A1 (en) | 2020-07-02 |
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