CN217388991U - Magnetic circuit assembly and loudspeaker with same - Google Patents

Abstract

The utility model provides a magnetic circuit assembly and have its loudspeaker, it includes: the inner magnetic circuit structure comprises an inner main magnet and an inner magnetic conductive plate which are sequentially stacked; the outer magnetic circuit structure is annularly arranged on the periphery of the inner magnetic circuit structure and comprises an outer main magnet and an outer magnetic conductive plate which are sequentially stacked along the direction from the inner main magnet to the inner magnetic conductive plate, at least part of the outer magnetic conductive plate is arranged opposite to the inner magnetic conductive plate, and a magnetic gap is formed between the inner magnetic conductive plate and the outer magnetic conductive plate; the magnetic flux reinforcing structure comprises an inner auxiliary magnet, the magnetic pole of the inner auxiliary magnet is opposite to that of the inner main magnet, and the inner auxiliary magnet is arranged on one side of the inner magnetic conductive plate, which is far away from the inner main magnet; and/or the magnetic flux strengthening structure comprises an outer auxiliary magnet, the magnetic pole of the outer auxiliary magnet is opposite to that of the outer main magnet, and the outer auxiliary magnet is annularly arranged on one side of the outer magnetic conduction plate, which is far away from the outer main magnet. Through the scheme of this application, can solve the problem that magnetic circuit assembly's sensitivity is low among the prior art.

Description

Magnetic circuit assembly and loudspeaker with same

Technical Field

The utility model relates to a speaker technical field particularly, relates to a magnetic circuit assembly and have its loudspeaker.

Background

A speaker is an important component of an electronic device for performing conversion between electrical signals and acoustic signals. The conventional speaker generally includes a housing, a vibration assembly and a magnetic circuit assembly, wherein the vibration assembly and the magnetic circuit assembly are both disposed inside the housing, and the magnetic circuit assembly and the vibration assembly cooperate to make the speaker generate sound. The existing magnetic circuit assembly generally includes a magnetic conductive plate, an inner magnetic conductive assembly, and an outer magnetic conductive assembly. Interior magnetic conduction subassembly and outer magnetic conduction subassembly all set up in the same one side of magnetic conduction board, and the periphery of magnetic conduction subassembly including the annular setting of outer magnetic conduction subassembly to form annular magnetic gap between messenger's interior magnetic conduction subassembly and the outer magnetic conduction subassembly, the voice coil loudspeaker voice coil among the vibration subassembly is worn to establish in the magnetic gap. However, the magnetic flux of the existing magnetic circuit assembly is low, which results in poor sensitivity of the horn.

SUMMERY OF THE UTILITY MODEL

The utility model provides a magnetic circuit assembly and have its loudspeaker to solve the problem that magnetic circuit assembly's among the prior art magnetic flux is low.

According to an aspect of the present invention, there is provided a magnetic circuit assembly, including: the inner magnetic path structure comprises an inner main magnet and an inner magnetic conductive plate which are sequentially stacked; the outer magnetic circuit structure is annularly arranged on the periphery of the inner magnetic circuit structure and comprises an outer main magnet and an outer magnetic conductive plate which are sequentially stacked along the direction from the inner main magnet to the inner magnetic conductive plate, at least part of the outer magnetic conductive plate is arranged opposite to the inner magnetic conductive plate, and a magnetic gap is formed between the inner magnetic conductive plate and the outer magnetic conductive plate; the magnetic flux reinforcing structure comprises an inner auxiliary magnet, the magnetic pole of the inner auxiliary magnet is opposite to that of the inner main magnet, and the inner auxiliary magnet is arranged on one side of the inner magnetic conductive plate, which is far away from the inner main magnet; and/or the magnetic flux strengthening structure comprises an outer auxiliary magnet, the magnetic pole of the outer auxiliary magnet is opposite to that of the outer main magnet, and the outer auxiliary magnet is annularly arranged on one side of the outer magnetic conduction plate, which is far away from the outer main magnet.

Further, the magnetic flux reinforcing structure comprises an inner auxiliary magnet, and the inner auxiliary magnet and the inner magnetic conductive plate are coaxially arranged with the inner main magnet.

Further, the radius of the inner secondary magnet is between 0.5 and 1 times the radius of the inner primary magnet.

Further, an annular space is arranged between the outer main magnet and the inner main magnet, and the projection of the magnetic gap in the axial direction is positioned in the annular space.

Furthermore, the magnetic flux strengthening structure comprises an outer auxiliary magnet, and the outer auxiliary magnet and the outer magnetic conductive plate are coaxially arranged with the outer main magnet.

According to the utility model discloses an on the other hand provides a loudspeaker, and it includes: a housing having an opening and a receiving chamber communicating with each other; in the above magnetic circuit assembly, the magnetic circuit assembly is disposed in the accommodating cavity; the vibration subassembly, the vibration subassembly includes voice coil loudspeaker voice coil and paper awl subassembly, and the one end and the paper awl subassembly of voice coil loudspeaker voice coil are connected, and the other end of voice coil loudspeaker voice coil is worn to establish in magnetic circuit component's magnetic gap, and paper awl subassembly closing cap is at the opening part of shell to be connected with the shell.

Further, the housing includes: the inner main magnet and the outer main magnet of the magnetic circuit assembly are arranged on the bottom plate; the first side plate is annularly arranged on the periphery of the bottom plate, and the first side plate is matched with the bottom plate to form an accommodating cavity.

Further, the paper cone assembly includes: the dustproof cap is arranged in the accommodating cavity and provided with a first outer edge, the first outer edge of the dustproof cap is connected with the inner side wall of the shell, a space is formed between the dustproof cap and the magnetic circuit assembly, and one end of the voice coil is connected with one side, close to the magnetic circuit assembly, of the dustproof cap; annular paper awl sets up in the one side of keeping away from magnetic circuit assembly of dust cap, and annular paper awl has relative first interior border and the first outside edge that sets up, and first interior border is connected with the outer peripheral face of dust cap, and first outside edge is connected with the shell.

Further, the dust cap includes: the top plate is arranged opposite to the inner magnetic conduction plate of the magnetic circuit assembly, the top plate and the inner magnetic conduction plate are arranged in parallel, and the voice coil is connected with the top plate; and the second side plate is annularly arranged on the periphery of the top plate, is positioned on one side of the top plate close to the magnetic circuit assembly, and extends towards the magnetic circuit assembly at one end of the second side plate far away from the top plate and is connected with the side wall of the shell.

Further, the bottom plate has a first plane and a second plane, the second plane is annularly arranged on the periphery of the first plane, the inner main magnet is arranged on the first plane, the outer main magnet is arranged on the second plane, and the first plane is arranged to be convex to the second plane or the second plane is arranged to be convex to the first plane.

Further, the paper cone assembly includes: the vibration part is arranged at the opening and provided with a second outer edge, the second outer edge is connected with the shell, the vibration part is provided with a third plane, the third plane is arranged opposite to the inner magnetic conductive plate of the magnetic circuit assembly and is parallel to the inner magnetic conductive plate, the voice coil is arranged on one side, close to the magnetic circuit assembly, of the vibration part, and the voice coil is connected with the third plane; the supporting part sets up and is holding the intracavity, and the supporting part is located between vibration portion and the magnetic circuit subassembly, and the supporting part is located the periphery of voice coil loudspeaker voice coil, and the supporting part has the relative second interior border and the second outside border that sets up, and the second outside border is connected with the inside wall of shell, and the second interior border is connected with one side that is close to the magnetic circuit subassembly of vibration portion, or the second interior border is connected with the voice coil loudspeaker voice coil.

By applying the technical scheme of the utility model, the magnetic pole of the inner auxiliary magnet is opposite to that of the inner main magnet, the inner auxiliary magnet is arranged on one side of the inner magnetic conductive plate, which is far away from the inner main magnet, and the magnetic flux of the inner magnetic path structure can be increased by matching the inner auxiliary magnet with the inner main magnet; the magnetic pole of outer auxiliary magnet is opposite with the magnetic pole of outer main magnet, sets up outer auxiliary magnet in the one side of keeping away from outer main magnet of outer magnetic conduction board, can increase the magnetic flux of outer magnetic circuit structure through outer auxiliary magnet and outer main magnet cooperation. Compared with the traditional technical scheme, the arrangement of the inner auxiliary magnet and the outer auxiliary magnet can increase the magnetic flux of the magnetic circuit component, and the sensitivity of the loudspeaker can be improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a horn provided in an embodiment of the present invention;

fig. 2 is a cross-sectional view of a horn provided in the second embodiment of the present invention;

fig. 3 is a top view of a horn provided in the second embodiment of the present invention;

fig. 4 shows a bottom view of a speaker according to a second embodiment of the present invention;

fig. 5 shows a schematic structural diagram of a horn provided in the third embodiment of the present invention;

fig. 6 shows a cross-sectional view of a horn provided in the third embodiment of the present invention;

fig. 7 shows a top view of a horn provided in the third embodiment of the present invention;

fig. 8 shows a schematic structural diagram of a horn according to a fourth embodiment of the present invention;

fig. 9 is a cross-sectional view of a horn according to a fourth embodiment of the present invention;

fig. 10 shows a top view of a horn provided by the fourth embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. an internal magnetic circuit structure; 11. an inner main magnet; 12. an inner magnetic conductive plate;

20. an outer magnetic circuit structure; 21. an outer main magnet; 22. an outer magnetic conductive plate;

30. an inner secondary magnet;

40. a housing; 41. a base plate; 42. a first side plate;

50. a voice coil;

60. a paper cone assembly;

61. a dust cap; 611. a top plate; 612. a second side plate; 62. an annular paper cone;

63. a vibrating section; 64. a support portion;

70. a first annular suspension edge;

80. and a second annular hanging edge.

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. 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and 2, a magnetic circuit assembly according to a first embodiment of the present invention includes an inner magnetic circuit structure 10, an outer magnetic circuit structure 20, and a magnetic flux reinforcing structure. The inner magnetic circuit structure 10 includes an inner main magnet 11 and an inner magnetic conductive plate 12 stacked in sequence. The outer magnetic structure 20 is annularly disposed on the periphery of the inner magnetic structure 10, the outer magnetic structure 20 includes an outer main magnet 21 and an outer magnetic conductive plate 22 sequentially stacked along the direction from the inner main magnet 11 to the inner magnetic conductive plate 12, at least a portion of the outer magnetic conductive plate 22 is disposed opposite to the inner magnetic conductive plate 12, and a magnetic gap is formed between the inner magnetic conductive plate 12 and the outer magnetic conductive plate 22. And, the magnetic poles of the inner main magnets 11 are opposite to the magnetic poles of the outer main magnets 21. The magnetic flux strengthening structure comprises an inner auxiliary magnet 30, the magnetic pole of the inner auxiliary magnet 30 is opposite to that of the inner main magnet 11, and the inner auxiliary magnet 30 is arranged on one side of the inner magnetic conductive plate 12 far away from the inner main magnet 11; and/or the magnetic flux strengthening structure comprises an outer auxiliary magnet, the magnetic pole of the outer auxiliary magnet is opposite to that of the outer main magnet 21, and the outer auxiliary magnet is annularly arranged on one side of the outer magnetic conduction plate 22 far away from the outer main magnet 21. The magnetic circuit assembly described above is suitable for a horn, and the horn equipped with the magnetic circuit assembly further includes a housing 40, a voice coil 50, and a paper cone assembly 60. When the loudspeaker works, the voice coil 50 of the loudspeaker is electrified, the voice coil 50 vibrates in the magnetic gap, and the voice coil 50 vibrates to drive the paper cone assembly 60 to vibrate, so that the loudspeaker makes a sound. Compared with the magnetic circuit assembly with the U-iron in the conventional scheme, the inner magnetic circuit structure 10 and the outer magnetic circuit structure 20 are matched, so that the thickness of the U-iron bottom serving as the thickness of the lower magnetic conductive plate is omitted, the overall thickness of the magnetic circuit assembly can be effectively reduced, and the magnetic circuit assembly is thinned.

By applying the technical scheme of the utility model, the magnetic pole of the inner auxiliary magnet 30 is opposite to the magnetic pole of the inner main magnet 11, the inner auxiliary magnet 30 is arranged on one side of the inner magnetic conductive plate 12 far away from the inner main magnet 11, and the magnetic flux of the inner magnetic path structure 10 can be increased by matching the inner auxiliary magnet 30 with the inner main magnet 11; the magnetic poles of the outer auxiliary magnets are opposite to the magnetic poles of the outer main magnets 21, the outer auxiliary magnets are arranged on one side, far away from the outer main magnets 21, of the outer magnetic conduction plate 22, and the magnetic flux of the outer magnetic circuit structure 20 can be increased through the cooperation of the outer auxiliary magnets and the outer main magnets 21. Compared with the traditional technical scheme, the arrangement of the inner auxiliary magnet 30 and the outer auxiliary magnet can increase the magnetic flux of the magnetic circuit component, and further can improve the sensitivity of the loudspeaker. With the above arrangement, the inner secondary magnet 30 can be added to the inner magnetic structure 10 or the outer secondary magnet can be added to the outer magnetic structure 20 according to the specific structure of the horn, or the inner secondary magnet 30 is added to the inner magnetic structure 10 and the outer secondary magnet is added to the outer magnetic structure 20 at the same time, so that the flexibility is strong. In addition, the arrangement of the inner auxiliary magnet 30 and the outer auxiliary magnet is simple in structure and convenient for assembling the magnetic circuit assembly.

In the present embodiment, the magnetic flux reinforcing structure includes an inner sub-magnet 30. Specifically, the inner auxiliary magnet 30, the inner magnetic conductive plate 12 and the inner main magnet 11 are all circular plate-shaped structures. Furthermore, the inner auxiliary magnet 30 and the inner magnetic conductive plate 12 are both arranged coaxially with the inner main magnet 11. Above-mentioned setting can guarantee that interior main magnet 11, interior magnetic conduction board 12 and interior auxiliary magnet 30 three are just to setting up, guarantee the magnetic flux of interior magnetic circuit structure 10 to, can guarantee the assembly precision of interior magnetic circuit structure 10, guarantee the compactness of interior magnetic circuit structure 10, avoid interior magnetic circuit structure 10 and outer magnetic circuit structure 20 to take place the condition of interfering. The specific thicknesses of the inner main magnet 11, the inner magnetic conductive plate 12 and the inner auxiliary magnet 30 are determined according to the requirements of the horn, and the specific thicknesses of the inner main magnet 11, the inner magnetic conductive plate 12 and the inner auxiliary magnet 30 are not limited in the scheme.

Optionally, the magnetic flux enhancing structure comprises an outer secondary magnet. Specifically, the outer secondary magnet, the outer magnetic conductive plate 22 and the outer main magnet 21 are all annular plate-shaped structures. The outer auxiliary magnet and the outer magnetic conductive plate 22 are both disposed coaxially with the outer main magnet 21. By the arrangement, the outer main magnet 21, the outer magnetic conductive plate 22 and the outer auxiliary magnet can be arranged just opposite to each other, the magnetic flux of the outer magnetic circuit structure 20 can be ensured, the assembly precision of the outer magnetic circuit structure 20 can be ensured, the compactness of the outer magnetic circuit structure 20 can be ensured, and the situation that the outer magnetic circuit structure 20 interferes with the inner magnetic circuit structure 10 is avoided. The specific thicknesses of the outer main magnet 21, the outer magnetic conductive plate 22 and the outer auxiliary magnet are determined according to the requirements of the horn, and the specific thicknesses of the outer main magnet 21, the outer magnetic conductive plate 22 and the outer auxiliary magnet are not limited in the scheme.

Optionally, the magnetic flux enhancing structure includes an inner secondary magnet 30 and an outer secondary magnet. Specifically, the inner auxiliary magnet 30, the inner magnetic conductive plate 12 and the inner main magnet 11 are all circular plate-shaped structures. Furthermore, the inner auxiliary magnet 30 and the inner magnetic conductive plate 12 are both arranged coaxially with the inner main magnet 11. The specific thicknesses of the inner main magnet 11, the inner magnetic conductive plate 12 and the inner auxiliary magnet 30 are determined according to the requirements of the horn, and the specific thicknesses of the inner main magnet 11, the inner magnetic conductive plate 12 and the inner auxiliary magnet 30 are not limited in the scheme. Specifically, the outer auxiliary magnet, the outer magnetic conductive plate 22 and the outer main magnet 21 are all of annular plate-shaped structures, and the outer auxiliary magnet, the outer magnetic conductive plate 22 and the outer main magnet 21 are coaxially arranged. The specific thicknesses of the outer main magnet 21, the outer magnetic conductive plate 22 and the outer auxiliary magnet are determined according to the requirements of the horn, and the specific thicknesses of the outer main magnet 21, the outer magnetic conductive plate 22 and the outer auxiliary magnet are not limited in the scheme. An annular gap is formed between the inner auxiliary magnet 30 and the outer auxiliary magnet, and the projection of the magnetic gap in the axial direction is positioned in the annular gap. The thicknesses of the inner magnetic conductive plate 12 and the outer magnetic conductive plate 22 are the same, and the inner magnetic conductive plate 12 and the outer magnetic conductive plate 22 are arranged opposite to each other. With the arrangement, the situation that the inner magnetic circuit structure 10 interferes with the outer magnetic circuit structure 20 can be avoided, and the structural compactness of the magnetic circuit assembly can be ensured.

In this embodiment, the radius of the inner sub magnet 30 is between 0.5 and 1 times the radius of the inner main magnet 11. When the radius of the inner subsidiary magnet 30 is less than 0.5 times the radius of the inner main magnet 11, the effect of the inner subsidiary magnet 30 on the magnetic flux reinforcement of the inner magnetic path structure 10 is poor; when the radius of the inner subsidiary magnet 30 is greater than that of the inner main magnet 11, it may occur that the inner subsidiary magnet 30 cannot further increase the magnetic flux of the inner magnetic path structure 10, resulting in waste of material of the inner subsidiary magnet 30, increasing the cost of the inner subsidiary magnet 30, and there may be a case where interference occurs with the outer magnetic path structure 20. Therefore, the radius of the inner auxiliary magnet 30 is set between 0.5 times and 1 time of the radius of the inner main magnet 11, so that the reinforcing effect on the magnetic flux can be ensured, the waste of the material of the inner auxiliary magnet 30 can be avoided, and the interference between the inner auxiliary magnet and the outer magnetic circuit structure 20 can be avoided. Wherein, the radius of the inner auxiliary magnet 30 may be 0.5 times, 0.6 times, 0.7 times, 0.8 times, 0.9 times of the radius of the inner main magnet 11 or the radius of the inner auxiliary magnet 30 is equal to the radius of the inner main magnet 11. In this embodiment, the radius of the inner subsidiary magnet 30 is equal to the radius of the inner main magnet 11.

Specifically, the outer main magnet 21 and the inner main magnet 11 have an annular space therebetween, and the projection of the magnetic gap in the axial direction is located in the annular space. The radius of the inner magnetic conductive plate 12 is greater than or equal to the radius of the inner main magnet 11, and the inner diameter of the outer magnetic conductive plate 22 is less than or equal to the inner diameter of the outer main magnet 21, so that the axial projection of the magnetic gap can be ensured to be positioned in the annular space. The outer diameter of the outer magnetic conductive plate 22 is smaller than or equal to the outer diameter of the outer main magnet 21, so that the condition that the outer periphery of the outer magnetic conductive plate 22 interferes with other parts of the horn can be avoided. In this embodiment, the radius of inner magnetic conductive plate 12 is greater than the radius of inner main magnet 11, the inner diameter of outer magnetic conductive plate 22 is smaller than the inner diameter of outer main magnet 21, and the outer diameter of outer magnetic conductive plate 22 is smaller than the radius of outer main magnet 21.

As shown in fig. 1 to 4, a second embodiment of the present invention provides a loudspeaker, which includes a housing 40, a magnetic circuit component and a vibration component. Wherein the housing 40 has an opening and a receiving chamber communicating with each other. The magnetic circuit assembly is arranged in the accommodating cavity. The vibration assembly includes a voice coil 50 and a paper cone assembly 60. One end of the voice coil 50 is connected with the paper cone component 60, the other end of the voice coil 50 is arranged in the magnetic gap of the magnetic circuit component in a penetrating mode, and the paper cone component 60 covers the opening of the shell 40 and is connected with the shell 40. Through adopting above-mentioned technical scheme, circular telegram to voice coil 50, voice coil 50 is along the axial reciprocating vibration in magnetic gap under magnetic circuit assembly's effect, and voice coil 50 vibrates and drives paper awl subassembly 60 vibration, and loudspeaker sound. By the arrangement, the magnetic circuit component is embedded in the shell 40, the compactness of the structure of the loudspeaker can be ensured, the integral thickness of the loudspeaker is effectively reduced, and the loudspeaker is thinned.

Specifically, the outer shell 40 includes a bottom plate 41 and a first side plate 42, and the outer shell 40 and the first side plate 42 are of an integrally molded structure. Wherein the inner main magnet 11 and the outer main magnet 21 of the magnetic circuit assembly are both disposed on the bottom plate 41. The first side plate 42 is annularly provided on the periphery of the bottom plate 41, and the first side plate 42 cooperates with the bottom plate 41 to form an accommodating chamber. Specifically, the bottom plate 41 has a circular plate-shaped structure, and the diameter of the first side plate 42 gradually increases from the inner main magnet 11 to the inner sub magnet 30. So set up, can guarantee the compactedness of the holistic structure of loudspeaker, effectively reduce the holistic height of loudspeaker to, can guarantee the shape of shell 40 and magnetic circuit assembly's shape looks adaptation.

Further, the bottom plate 41 has a first plane and a second plane, the second plane being annularly disposed on the outer periphery of the first plane, the inner main magnet 11 being disposed on the first plane, and the outer main magnet 21 being disposed on the second plane, the first plane being disposed to protrude from the second plane. So set up for the thickness of interior main magnet 11 is less than the thickness of outer main magnet 21, can avoid interior main magnet 11 to take place the phenomenon of magnetic saturation, guarantees the tone quality of loudspeaker. Specifically, the base plate 41 includes a circular plate, an annular transition joint section, and an annular plate connected to each other, the annular plate and the circular plate being coaxially disposed, the annular transition joint section being disposed between the circular plate and the annular plate. The top surface of the circular plate forms a first plane and the top surface of the annular plate forms a second plane. In addition, in this embodiment, the circular plate, the annular transitional coupling section, and the annular plate are integrally formed, and the diameter of the annular transitional coupling section gradually increases from the circular plate to the annular plate. So set up, can promote the convenience of shell 40 processing.

Alternatively, a circular boss is provided at the bottom of the base plate 41, the top surface of the circular boss forms the first plane, and the inner main magnet 11 is provided on the circular boss. So set up, can promote bottom plate 41's structural strength, promote the convenience to bottom plate 41 processing.

In this embodiment, the paper cone assembly 60 includes a dust cap 61 and an annular paper cone 62. Wherein, dust cap 61 sets up in holding the intracavity, and dust cap 61 has first outward flange, and the first outward flange of dust cap 61 is connected with the inside wall of shell 40, has the interval between dust cap 61 and the magnetic circuit assembly, and the one end of voice coil 50 is connected with one side that is close to the magnetic circuit assembly of dust cap 61. Annular paper awl 62 sets up the one side of keeping away from magnetic circuit assembly at dirt cap 61, and annular paper awl 62 has relative first interior border and the first outer border that sets up, and first interior border is connected with dirt cap 61's outer peripheral face, and first outer border is connected with shell 40. Specifically, the dust cap 61 is made of a flexible material, and the specific material of the dust cap 61 is not required in the present scheme, and in the present embodiment, the dust cap 61 is made of a rubber material. The annular paper cone 62 is made of a rigid material, and the scheme does not require the specific material of the annular paper cone 62, wherein the annular paper cone 62 can be made of an alloy plate, a foam plate, a fireproof plate or a paper material, and in the embodiment, the annular paper cone 62 is a foam plate. When the voice coil 50 vibrates, the voice coil 50 vibrates to drive the dustproof cap 61 to vibrate, and the dustproof cap 61 vibrates to drive the annular paper cone 62 to vibrate. Because the dustproof cap 61 is made for flexible material, consequently, at the in-process that annular paper awl 62 vibrated, dustproof cap 61 plays the effect of buffering to the vibration of annular paper awl 62, guarantees the stationarity that annular paper awl 62 vibrated, and then can guarantee the stationarity that voice coil loudspeaker voice coil 50 vibrated, avoids the condition that voice coil loudspeaker voice coil 50 and magnetic circuit assembly bump, guarantees loudspeaker's tone quality.

Specifically, the first side plate 42 includes a first annular side plate, an annular transition connection portion, and a second annular side plate that are connected to each other by the direction of the inner main magnet 11 to the inner sub magnet 30. Wherein, by the direction of interior main magnet 11 to interior auxiliary magnet 30, the diameter of first annular curb plate increases gradually, and the diameter of second annular curb plate is greater than the diameter of first annular curb plate, and first annular curb plate, annular transition connecting portion and second annular curb plate are integrated into one piece structure.

In this embodiment, the horn further includes a first annular suspension edge 70, an inner edge of the first annular suspension edge 70 is bonded to the first outer edge of the dust cap 61, an outer edge of the first annular suspension edge 70 is bonded to the annular transition connection portion, and the first annular suspension edge 70 is made of a flexible material. The arrangement of the first annular suspension edge 70 and the annular transition connecting portion can improve the convenience and firmness of connection between the dust cap 61 and the housing 40.

Specifically, the dust cap 61 includes a top plate 611 and a second side plate 612. The top plate 611 is disposed opposite to the inner magnetic conductive plate 12 of the magnetic circuit assembly, the top plate 611 is disposed parallel to the inner magnetic conductive plate 12, and the voice coil 50 is connected to the top plate 611. A second side plate 612 is annularly disposed on the periphery of the top plate 611, and the second side plate 612 is located on the side of the top plate 611 close to the magnetic circuit assembly, and an end of the second side plate 612 away from the top plate 611 extends toward the magnetic circuit assembly and is connected to the side wall of the housing 40. And, the diameter of the second side plate 612 is gradually reduced in the direction of the inner main magnet 11 to the inner sub magnet 30. The first interior border of annular paper awl 62 bonds the setting with the outer peripheral face of second curb plate 612, above-mentioned setting for roof 611 of dust cap 61 is dull and stereotyped structure, so sets up, can reduce loudspeaker cut apart the vibration, promotes loudspeaker's frequency response performance, and then can further promote loudspeaker's tone quality.

Further, the housing 40 further includes an annular connecting portion and an annular stopper portion, the annular connecting portion is annularly disposed on one side of the second annular side plate far away from the first annular side plate, and is located outside the accommodating cavity. The annular stopping part is arranged on the outer periphery of the annular connecting part far away from the second annular side plate. The loudspeaker further comprises a second annular hanging edge 80, the second annular hanging edge 80 is arranged between the annular stopping portion and the second outer edge of the annular paper cone 62, the inner edge of the second annular hanging edge 80 is bonded with the second outer edge of the annular paper cone 62, and the outer edge of the second annular hanging edge 80 is bonded with the annular connecting portion and the annular stopping portion respectively. The second annular suspension edge 80 can buffer and stabilize the vibration of the annular paper cone 62, and further ensure the stability of the vibration of the voice coil 50. Meanwhile, the firmness and convenience of connection of the annular paper cone 62 and the shell 40 can be ensured.

As shown in fig. 5 to 7, a third embodiment of the present application provides a horn, which is different from the first embodiment in that: the paper cone assembly 60 includes a vibration portion 63 and a support portion 64. Wherein, the vibrating portion 63 is disposed at the opening, the vibrating portion 63 has a second outer edge, the second outer edge is connected to the housing 40, the vibrating portion 63 has a third plane, the third plane is disposed opposite to the inner magnetic conductive plate 12 of the magnetic circuit assembly, and the third plane is disposed parallel to the inner magnetic conductive plate 12, the voice coil 50 is disposed at one side of the vibrating portion 63 close to the magnetic circuit assembly, and the voice coil 50 is connected to the third plane. The supporting portion 64 is disposed in the accommodating cavity, the supporting portion 64 is located between the vibrating portion 63 and the magnetic circuit assembly, the supporting portion 64 is located at the periphery of the voice coil 50, the supporting portion 64 has a second inner edge and a second outer edge which are oppositely disposed, the second outer edge is connected with the inner side wall of the housing 40, and the second inner edge is connected with one side of the vibrating portion 63 close to the magnetic circuit assembly. Specifically, the supporting portion 64 is made of a flexible material, the present embodiment does not require a specific material for the supporting portion 64, and in this embodiment, the supporting portion 64 is made of a rubber material. The vibrating portion 63 is made of a rigid material, and the present embodiment does not require a specific material of the vibrating portion 63, wherein the vibrating portion 63 may be made of an alloy plate, a foam plate, a fireproof plate, or a paper material, and in this embodiment, the vibrating portion 63 is a foam plate. When the voice coil 50 vibrates, the voice coil 50 vibrates to drive the vibration portion 63 to vibrate. Because the supporting part 64 is made of flexible material, in the vibration process of the vibration part 63, the supporting part 64 plays a role in buffering the vibration of the vibration part 63, the vibration stability of the vibration part 63 is ensured, the vibration stability of the voice coil 50 can be ensured, the collision between the voice coil 50 and the magnetic circuit component is avoided, and the tone quality of the loudspeaker is ensured.

Specifically, the vibrating portion 63 includes a vibrating plate, a first ring vibrating plate, and a second ring vibrating plate connected to each other. The vibrating plate is of a circular structure, and the third plane is arranged on the vibrating plate. The first annular vibrating plate is annularly arranged on the periphery of the vibrating plate, the inner periphery of the first annular vibrating plate is integrally formed with the periphery of the vibrating plate, and the distance from the first annular vibrating plate to the bottom plate 41 is gradually reduced along the direction from the inner edge of the first annular vibrating plate to the outer edge of the first annular vibrating plate. The second ring vibration plate is annularly arranged on the periphery of the first ring vibration plate, the inner periphery of the second ring vibration plate is integrally connected with the outer periphery of the first ring vibration plate, and the distance from the second ring vibration plate to the bottom plate 41 gradually increases along the direction from the inner edge of the second ring vibration plate to the outer edge of the second ring vibration plate. The inner peripheral edge of the second annular overhang 80 is bonded to the outer peripheral edge of the second diaphragm. So set up, can guarantee that vibration portion 63 is the integrated into one piece structure, the convenient machine-shaping to vibration portion 63.

Specifically, the support portion 64 has an annular structure, and the distance between the support portion 64 and the bottom plate 41 gradually decreases in the direction from the inner edge of the support portion 64 to the outer edge of the support portion 64, and the inner edge of the support portion 64 is bent inward and is bonded to the second annular vibration plate, and the outer edge of the support portion 64 is bonded to the inner peripheral edge of the first annular suspension edge 70. With this arrangement, the layout of the vibrating portion 63 and the supporting portion 64 can be made reasonable and the structure can be made compact, and the supporting portion 64, the magnetic circuit assembly, and the vibrating portion 63 can be prevented from interfering with each other.

As shown in fig. 8 to 10, a horn provided in the fourth embodiment of the present application is different from the third embodiment in that: the vibrating portion 63 has a flat plate-like structure, and the outer edge of the vibrating portion 63 is bonded to the inner edge of the second annular suspended edge 80. The inner edge of the support portion 64 is bonded to the outer peripheral surface of the voice coil 50, the outer edge of the support portion 64 is bonded to the annular transition portion of the first side plate 42, and the distance between the support portion 64 and the vibrating portion 63 gradually increases from the inner edge of the support portion 64 to the outer edge of the support portion 64. With this arrangement, the convenience of processing the vibrating portion 63 can be improved.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be 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.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

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 (11)

1. A magnetic circuit assembly, comprising:

the inner magnetic circuit structure (10) comprises an inner main magnet (11) and an inner magnetic conductive plate (12) which are sequentially stacked;

the outer magnetic circuit structure (20) is annularly arranged on the periphery of the inner magnetic circuit structure (10), the outer magnetic circuit structure (20) comprises an outer main magnet (21) and an outer magnetic conductive plate (22) which are sequentially stacked along the direction from the inner main magnet (11) to the inner magnetic conductive plate (12), at least part of the outer magnetic conductive plate (22) is arranged opposite to the inner magnetic conductive plate (12), and a magnetic gap is formed between the inner magnetic conductive plate (12) and the outer magnetic conductive plate (22);

a magnetic flux reinforcing structure comprising an inner secondary magnet (30), the magnetic pole of the inner secondary magnet (30) being opposite to the magnetic pole of the inner main magnet (11), the inner secondary magnet (30) being disposed on the side of the inner magnetically permeable plate (12) remote from the inner main magnet (11); and/or the magnetic flux strengthening structure comprises an outer auxiliary magnet, the magnetic pole of the outer auxiliary magnet is opposite to that of the outer main magnet (21), and the outer auxiliary magnet is annularly arranged on one side of the outer magnetic conduction plate (22) far away from the outer main magnet (21).

2. The magnetic circuit assembly according to claim 1, wherein the magnetic flux enhancing structure comprises an inner secondary magnet (30), the inner magnetically permeable plate (12) each being coaxially arranged with the inner primary magnet (11).

3. The magnetic circuit assembly according to claim 2, wherein the radius of the inner secondary magnet (30) is between 0.5 and 1 times the radius of the inner primary magnet (11).

4. The magnetic circuit assembly according to claim 1, characterized in that there is an annular space between the outer main magnet (21) and the inner main magnet (11), the magnetic gap being located within the annular space in axial projection.

5. The magnetic circuit assembly according to claim 1, wherein the magnetic flux enhancing structure comprises an outer secondary magnet, the outer secondary magnet and the outer magnetically permeable plate (22) each being coaxially arranged with the outer main magnet (21).

6. A horn, comprising:

a housing (40) having an opening and a receiving chamber communicating with each other;

the magnetic circuit assembly of any one of claims 1 to 5, disposed within the receiving cavity;

the vibration assembly comprises a voice coil (50) and a paper cone assembly (60), one end of the voice coil (50) is connected with the paper cone assembly (60), the other end of the voice coil (50) penetrates through a magnetic gap of the magnetic circuit assembly, and the paper cone assembly (60) covers the opening of the shell (40) and is connected with the shell (40).

7. The horn of claim 6, wherein the housing (40) comprises:

a bottom plate (41) on which both the inner main magnet (11) and the outer main magnet (21) of the magnetic circuit assembly are disposed;

the first side plate (42) is annularly arranged on the periphery of the bottom plate (41), and the first side plate (42) is matched with the bottom plate (41) to form the accommodating cavity.

8. The horn of claim 6, wherein the paper cone assembly (60) comprises:

a dust cap (61) disposed in the receiving cavity, the dust cap (61) having a first outer edge, the first outer edge of the dust cap (61) being connected to an inner side wall of the housing (40), the dust cap (61) and the magnetic circuit assembly having a space therebetween, one end of the voice coil (50) being connected to a side of the dust cap (61) close to the magnetic circuit assembly;

annular paper cone (62), set up keeping away from of dust cap (61) one side of magnetic circuit assembly, annular paper cone (62) have relative first interior border and the first outer border that sets up, first interior border with the outer peripheral face of dust cap (61) is connected, first outer border with shell (40) are connected.

9. The horn of claim 8, wherein the dust cap (61) comprises:

the top plate (611) is arranged opposite to the inner magnetic conduction plate (12) of the magnetic circuit assembly, the top plate (611) is arranged in parallel with the inner magnetic conduction plate (12), and the voice coil (50) is connected with the top plate (611);

a second side plate (612) annularly arranged on the periphery of the top plate (611), wherein the second side plate (612) is positioned on one side of the top plate (611) close to the magnetic circuit assembly, and one end of the second side plate (612) far away from the top plate (611) extends towards the magnetic circuit assembly and is connected with the side wall of the shell (40).

10. The horn of claim 7, wherein the base plate (41) has a first plane and a second plane, the second plane being annularly disposed about the periphery of the first plane, the inner primary magnet (11) being disposed on the first plane, the outer primary magnet (21) being disposed on the second plane, the first plane being disposed proud of the second plane, or the second plane being disposed proud of the first plane.

11. The horn of claim 6, wherein the paper cone assembly (60) comprises:

a vibrating portion (63) disposed at the opening, the vibrating portion (63) having a second outer edge, the second outer edge being connected to the housing (40), the vibrating portion (63) having a third plane, the third plane being disposed opposite to the inner magnetic conductive plate (12) of the magnetic circuit assembly, the third plane being disposed in parallel with the inner magnetic conductive plate (12), the voice coil (50) being disposed on a side of the vibrating portion (63) close to the magnetic circuit assembly, and the voice coil (50) being connected to the third plane;

supporting part (64), set up in the holding chamber, just supporting part (64) are located vibrating part (63) with between the magnetic circuit assembly, supporting part (64) are located the periphery of voice coil (50), supporting part (64) have relative second interior border and the second outside border that sets up, the second outside border with the inside wall of shell (40) is connected, the second interior border with vibrating part (63) be close to one side of magnetic circuit assembly is connected, or the second interior border with voice coil (50) are connected.

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