CN213880247U - Plane vibrating diaphragm loudspeaker - Google Patents
Plane vibrating diaphragm loudspeaker Download PDFInfo
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- CN213880247U CN213880247U CN202023274882.0U CN202023274882U CN213880247U CN 213880247 U CN213880247 U CN 213880247U CN 202023274882 U CN202023274882 U CN 202023274882U CN 213880247 U CN213880247 U CN 213880247U
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Abstract
The utility model provides a plane vibrating diaphragm speaker, its characterized in that: magnetic circuit assembly includes first magnetic circuit assembly and second magnetic circuit assembly, first magnetic circuit assembly and second magnetic circuit assembly are located respectively the relative both sides of vibrating diaphragm press from both sides and establish the vibrating diaphragm setting, first magnetic circuit assembly includes first center magnet steel and shell, second magnetic circuit assembly includes second center magnet steel, first center magnet steel is greater than second center magnet steel, first center magnet steel is fixed on the shell, sets up first location barricade on the shell, first location barricade centers on first center magnet steel sets up. The utility model discloses first location barricade and second location barricade can play the positioning action when magnetic circuit subassembly assembles, convenient equipment, and can play certain hindrance supporting role to the displacement and the deformation of magnet steel when drop test, reduce the risk that falls the magnet steel in the drop test; the first positioning retaining wall and the second positioning retaining wall can relieve the magnetic saturation phenomenon, reduce magnetic leakage and strengthen the magnetic field intensity.
Description
Technical Field
The utility model belongs to the technical field of the speaker and specifically relates to a plane vibrating diaphragm speaker is related to.
Background
The planar vibrating diaphragm micro loudspeaker includes casing, vibrating system, magnetic circuit and other parts. In vibration system, be different from the design that traditional voice coil loudspeaker voice coil bonded in vibrating diaphragm below, the voice coil loudspeaker voice coil of plane vibrating diaphragm speaker arranges the diaphragm in, adopts this kind of design, and it is bad to have avoided traditional voice coil loudspeaker voice coil to bond the concentricity that may appear in the diaphragm below, and the bad phenomenon such as noise appears in the wiping magnet steel of voice coil loudspeaker voice coil vibration in-process. Aiming at the planar diaphragm micro-speaker, a new magnetic circuit design is required, and the traditional magnetic circuit design arranged below the diaphragm does not meet the performance requirements of the currently designed magnetic circuit and final acoustics.
In order to improve the magnetic field performance of the loudspeaker, magnetic loops are respectively arranged above and below the diaphragm to improve the magnetic field performance of the voice coil area.
In the existing design, too many magnetic circuit components increase the difficulty of assembly, and the magnetic steel assembly is easy to deflect due to lack of positioning. And the magnetic steel components are increased, the risk of dropping the magnetic steel in a drop test in a reliability test is increased, and the magnetic saturation phenomenon is easy to occur in the magnetic conductive sheet and the magnetic flux leakage is caused when the magnetic field intensity is enhanced due to the excessive magnetic steel.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned conventional art's weak point, provide a plane vibrating diaphragm speaker.
The purpose of the utility model is achieved through the following technical measures: the utility model provides a plane vibrating diaphragm speaker, includes the basin frame and fixes magnetic circuit subassembly and vibration subassembly on the basin frame, vibration subassembly includes vibrating diaphragm and the plane voice coil loudspeaker voice coil of setting in the vibrating diaphragm, its characterized in that: magnetic circuit assembly includes first magnetic circuit assembly and second magnetic circuit assembly, first magnetic circuit assembly and second magnetic circuit assembly are located respectively the relative both sides of vibrating diaphragm press from both sides and establish the vibrating diaphragm setting, first magnetic circuit assembly includes first center magnet steel and shell, second magnetic circuit assembly includes second center magnet steel, first center magnet steel is greater than second center magnet steel, first center magnet steel is fixed on the shell, sets up first location barricade on the shell, first location barricade centers on first center magnet steel sets up.
As an improvement, the second magnetic circuit component comprises a second magnetic cover, second central magnetic steel is fixed on the second magnetic cover, a second positioning retaining wall is arranged on the second magnetic cover, and the second positioning retaining wall surrounds the second central magnetic steel.
As a further improvement, the second magnetic circuit assembly further comprises an edge magnetic steel arranged at the periphery of the second center magnetic steel, and the second positioning retaining wall is arranged between the edge magnetic steel and the second center magnetic steel.
As a further improvement, the housing is made of a magnetically conductive material.
As a further improvement, the cross section of the first positioning retaining wall is rectangular or polygonal.
As a further improvement, the cross section of the second positioning retaining wall is rectangular or polygonal.
As a further improvement, the thickness of the shell is W, the height of the first positioning retaining wall is 0.5W-1.2W, and the width of the first positioning retaining wall is 0.8W-1.5W.
As a further improvement, the thickness of the second magnetic cover is H, the height of the second positioning retaining wall is 0.5H-1.2H, and the width of the second positioning retaining wall is 0.8H-1.5H.
As a further improvement, the distance from the first positioning retaining wall to the first central magnetic steel is 0.01mm-0.02 mm.
As a further improvement, the distance from the second positioning retaining wall to the second central magnetic steel is 0.01mm-0.02 mm.
Owing to adopted above-mentioned technical scheme, a plane vibrating diaphragm speaker, include the basin frame and fix magnetic circuit assembly and vibration subassembly on the basin frame, vibration subassembly includes vibrating diaphragm and the plane voice coil loudspeaker voice coil of setting in the vibrating diaphragm, magnetic circuit assembly includes first magnetic circuit assembly and second magnetic circuit assembly, first magnetic circuit assembly and second magnetic circuit assembly are located respectively the relative both sides of vibrating diaphragm press from both sides and establish the vibrating diaphragm setting, first magnetic circuit assembly includes first center magnet steel and shell, second magnetic circuit assembly includes second center magnet steel, first center magnet steel is greater than second center magnet steel, first center magnet steel is fixed on the shell, sets up first location barricade on the shell, first location barricade centers on first center magnet steel sets up.
Compared with the prior art, the utility model has the advantages that:
firstly, the method comprises the following steps: the first positioning retaining wall and the second positioning retaining wall can play a positioning role when the magnetic circuit assembly is assembled, are convenient to assemble, can play a certain role in blocking and supporting the displacement and deformation of the magnetic steel during a drop test, and reduce the risk of the magnetic steel dropping in the drop test;
secondly, the method comprises the following steps: the positions of the first positioning retaining wall and the second positioning retaining wall are just at the position where the magnetic saturation is most easy in the magnetic cover and the shell, and after the first positioning retaining wall and the second positioning retaining wall are arranged, the magnetic saturation phenomenon can be relieved, the magnetic leakage is reduced, and the magnetic field intensity is enhanced;
thirdly, the method comprises the following steps: first center magnet steel is greater than second center magnet steel and can makes the BL value of speaker increase, improves the tone quality and the loudness of speaker.
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of a planar diaphragm loudspeaker according to the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the planar diaphragm loudspeaker of the present invention.
Fig. 3 is a schematic structural diagram of a third embodiment of the planar diaphragm loudspeaker of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the 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 limited otherwise.
The first embodiment is as follows: as shown in fig. 1, a planar diaphragm loudspeaker comprises a frame 1, and a magnetic circuit assembly and a vibration assembly fixed on the frame 1, wherein the vibration assembly comprises a diaphragm 2 and a planar voice coil 3 arranged in the diaphragm 2, the magnetic circuit assembly comprises a first magnetic circuit assembly 4 and a second magnetic circuit assembly 5, and the first magnetic circuit assembly 4 and the second magnetic circuit assembly 5 are respectively located on two opposite sides of the diaphragm 2 and are used for clamping the diaphragm 2.
The first magnetic circuit assembly 4 includes a first central magnetic steel 41 and a casing 42, the first central magnetic steel 41 is fixed on the casing 42, the casing 42 is made of a magnetic conductive material, the casing 42 is an SPCC magnetic conductive casing, it should be understood that the casing 42 may also be made of a magnetic conductive material, such as silicon steel.
Set up first location barricade 43 on the shell 42, the cross section of first location barricade is the rectangle, first location barricade 43 centers on first central magnetic steel 41 sets up.
The thickness of the shell 42 is W, the height of the first positioning retaining wall 43 is 0.5W-1.2W, and the width of the first positioning retaining wall 43 is 0.8W-1.5W. The distance from the first positioning retaining wall 43 to the first central magnetic steel 41 is 0.01mm-0.02 mm. The height of first location barricade 43 is W, and the width also is W, first location barricade 43 extremely when first center magnet steel 41's distance is 0.01mm, forming process and magnetic conduction effect are optimal.
Second magnetic circuit assembly 5 includes second center magnet steel 52, second magnetism cover 51, second center magnet steel 52 is fixed on second magnetism cover 51, set up second location barricade 53 on the second magnetism cover 51, the cross section of second location barricade 53 is the rectangle, second location barricade 53 centers on second center magnet steel 52 sets up. The second magnetic circuit assembly 5 further includes an edge magnetic steel 54 located at the periphery of the second central magnetic steel 52, and the second positioning retaining wall 53 is located between the edge magnetic steel 54 and the second central magnetic steel 52.
First center magnet steel 41 is greater than second center magnet steel 52, first center magnet steel 41 is greater than second center magnet steel 52 and can makes the BL value of speaker increase, improves the tone quality and the loudness of speaker.
The thickness of the second magnetic shield 51 is H, the height of the second positioning retaining wall 53 is 0.5H-1.2H, and the width of the second positioning retaining wall 53 is 0.8H-1.5H. The distance from the second positioning retaining wall 53 to the second central magnetic steel 52 is 0.01mm-0.02 mm. The height of second location barricade 53 is H, and the width also is H, second location barricade 53 to when the distance of second center magnet steel 52 is 0.01mm, forming process and magnetic conduction effect are optimal.
Example two: as shown in fig. 2, the structure is the same as that of the first embodiment, except that the cross section of the second positioning retaining wall 53 is rectangular at the lower end and triangular at the upper end. The cross section of the first positioning retaining wall 43 is rectangular at the upper end and triangular at the lower end.
Example three: as shown in fig. 3, the structure is the same as that of the first embodiment, except that the cross section of the second positioning retaining wall 53 is rectangular at the lower end and semicircular at the upper end. The cross section of the first retaining wall 43 is rectangular at the upper end and semicircular at the lower end.
To sum up, second location barricade 53 with first location barricade 43 can play the positioning action when magnetic circuit component assembles, convenient equipment, and this can play certain hindrance supporting role to the displacement and the deformation of magnet steel when drop test, reduces the risk of dropping the magnet steel in the drop test. In addition, second location barricade 53 with the position of first location barricade 43 is in the shell 42 with the position that saturates most easily in the second magnetism cover 51 sets up second location barricade 53 with behind the first location barricade 43, can alleviate the magnetism saturation phenomenon, reduce the magnetic leakage, strengthen magnetic field intensity.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a plane vibrating diaphragm speaker, includes the basin frame and fixes magnetic circuit subassembly and vibration subassembly on the basin frame, vibration subassembly includes vibrating diaphragm and the plane voice coil loudspeaker voice coil of setting in the vibrating diaphragm, its characterized in that: magnetic circuit assembly includes first magnetic circuit assembly and second magnetic circuit assembly, first magnetic circuit assembly and second magnetic circuit assembly are located respectively the relative both sides of vibrating diaphragm press from both sides and establish the vibrating diaphragm setting, first magnetic circuit assembly includes first center magnet steel and shell, second magnetic circuit assembly includes second center magnet steel, first center magnet steel is greater than second center magnet steel, first center magnet steel is fixed on the shell, sets up first location barricade on the shell, first location barricade centers on first center magnet steel sets up.
2. A flat-diaphragm loudspeaker as claimed in claim 1, wherein: the second magnetic circuit component comprises a second magnetic cover, second central magnetic steel is fixed on the second magnetic cover, a second positioning retaining wall is arranged on the second magnetic cover, and the second positioning retaining wall surrounds the second central magnetic steel.
3. A flat diaphragm loudspeaker as claimed in claim 2, wherein: the second magnetic circuit component further comprises edge magnetic steel arranged at the periphery of the second center magnetic steel, and the second positioning retaining wall is arranged between the edge magnetic steel and the second center magnetic steel.
4. A flat-diaphragm loudspeaker as claimed in claim 1, wherein: the shell is made of magnetic conductive materials.
5. A flat-diaphragm loudspeaker as claimed in claim 1, wherein: the cross section of the first positioning retaining wall is rectangular or polygonal.
6. A flat diaphragm loudspeaker as claimed in claim 2, wherein: the cross section of the second positioning retaining wall is rectangular or polygonal.
7. A flat-diaphragm loudspeaker as claimed in claim 1, wherein: the thickness of shell is W, the height of first location barricade is 0.5W-1.2W, the width of first location barricade is 0.8W-1.5W.
8. A flat diaphragm loudspeaker as claimed in claim 2, wherein: the thickness of the second magnetic cover is H, the height of the second positioning retaining wall is 0.5H-1.2H, and the width of the second positioning retaining wall is 0.8H-1.5H.
9. A flat diaphragm loudspeaker as claimed in any one of claims 1 to 8, wherein: the distance from the first positioning retaining wall to the first central magnetic steel is 0.01mm-0.02 mm.
10. A flat diaphragm loudspeaker as claimed in any one of claims 2, 3, 6 or 8, wherein: the distance from the second positioning retaining wall to the second central magnetic steel is 0.01mm-0.02 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023274882.0U CN213880247U (en) | 2020-12-31 | 2020-12-31 | Plane vibrating diaphragm loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023274882.0U CN213880247U (en) | 2020-12-31 | 2020-12-31 | Plane vibrating diaphragm loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213880247U true CN213880247U (en) | 2021-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023274882.0U Active CN213880247U (en) | 2020-12-31 | 2020-12-31 | Plane vibrating diaphragm loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213880247U (en) |
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2020
- 2020-12-31 CN CN202023274882.0U patent/CN213880247U/en active Active
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