CN216775023U - Loudspeaker and sound production device - Google Patents

Abstract

The utility model discloses a loudspeaker and sound production equipment, wherein the loudspeaker comprises a shell assembly, a magnetic circuit system and two vibration systems, the magnetic circuit system comprises a central magnet, an edge magnet, a first central magnetic conductive plate and a first edge magnetic conductive plate, a partition plate is arranged in a gap between the central magnet and the edge magnet, two ends of the partition plate are respectively connected with the first central magnetic conductive plate and the first edge magnetic conductive plate so as to form a first magnetic gap with the central magnet and a second magnetic gap with the edge magnet; each vibration system comprises a vibration diaphragm and voice coils, each vibration diaphragm comprises a central part and a corrugated ring part, and the two voice coils are respectively connected to the surface of the central part facing the magnetic circuit system and are respectively inserted into the first magnetic gap and the second magnetic gap; in the vibration direction of the voice coil, the bending ring parts of the two vibrating diaphragms are both arranged in a concave manner towards the direction of the magnetic circuit system. The loudspeaker can improve the utilization rate of the magnetic circuit system, save the cost and reduce the thickness of the product.

Description

Loudspeaker and sound production device

Technical Field

The utility model relates to the technical field of sound generating device structures, in particular to a loudspeaker and sound generating equipment.

Background

With the rapid development of the consumer electronics industry, various intelligent terminals are in great demand. Consumers are demanding more and more products, such as audio functions, with a greater loudness. At present, the conventional moving-coil loudspeaker is a set of magnetic circuit structure driving a coil and a vibrating diaphragm, the structure has relatively low utilization rate of a magnetic circuit, and the acoustic performance and the thickness are closely related, but under the condition that the thickness of a product is thinner and thinner, the structure of the conventional moving-coil loudspeaker cannot meet the requirement. Although there is a structure with multiple vibration systems, the product thickness is relatively large due to unreasonable structure, and the magnetic circuit system uses more materials and has higher cost.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a loudspeaker, aiming at improving the utilization rate of a magnetic circuit system and reducing the cost and the product thickness.

In order to achieve the above object, the present invention provides a speaker comprising:

a housing assembly;

the magnetic circuit system is arranged on the shell assembly and comprises a central magnet, edge magnets which are arranged around the periphery of the central magnet at intervals, a first central magnetic conduction plate and a first edge magnetic conduction plate, the first central magnetic conduction plate is arranged on one surface of the central magnet, the first edge magnetic conduction plate is arranged on the surface, deviating from the first central magnetic conduction plate, of the edge magnet, a partition plate is arranged in a gap between the central magnet and the edge magnets, two ends of the partition plate are respectively connected with the first central magnetic conduction plate and the first edge magnetic conduction plate, a first magnetic gap is formed between the partition plate and the central magnet, and a second magnetic gap is formed between the partition plate and the edge magnets; and

the two vibration systems are respectively positioned on two opposite sides of the magnetic circuit system, each vibration system comprises a vibration diaphragm and a voice coil, each vibration diaphragm comprises a central part and a corrugated ring part, the two vibration diaphragms are both arranged on the shell component through the corrugated ring parts, and the two voice coils are respectively connected to the surface of the central part facing the magnetic circuit system and are respectively inserted into the first magnetic gap and the second magnetic gap;

in the vibration direction of the voice coil, the bending ring parts of the two vibrating diaphragms are both arranged towards the direction of the magnetic circuit system in a sunken mode.

In an embodiment, the first side magnetic conductive plate, the partition plate, and the first center magnetic conductive plate are integrally formed.

In an embodiment, the vibration system further includes a second center magnetic-conducting plate and a second side magnetic-conducting plate, the second center magnetic-conducting plate is disposed on a surface of the center magnet departing from the first center magnetic-conducting plate, and the second side magnetic-conducting plate is disposed on a surface of the side magnet departing from the first side magnetic-conducting plate.

In one embodiment, the casing assembly includes a first casing and a second casing connected to each other, the first casing is provided with a first mounting hole, and the first side magnetic conductive plate is arranged in the first mounting hole;

the second shell is provided with a second mounting hole, the second edge magnetic conduction plate is arranged in the second mounting hole, and the periphery of the edge magnet is clamped between the first shell and the second shell.

In one embodiment, the first edge magnetic conductive plate is connected to the first casing by injection molding;

and/or the second side magnetic conduction plate is connected to the second shell in an injection molding mode.

In one embodiment, the vibration system further includes a centering branch piece located on one side of the magnetic circuit system, an outer peripheral edge of the centering branch piece is fixed to the housing assembly, and an inner peripheral edge of the centering branch piece is connected to the corresponding voice coil through a lead wire.

In one embodiment, there are two centering branch pieces, each centering branch piece includes a fixing ring and a spring piece arranged in the fixing ring, and the fixing ring is mounted on the housing assembly;

the vibration system further comprises a connecting piece, the connecting piece comprises a main body ring and a supporting portion, the main body ring is connected to the central portion, the supporting portion extends towards one side of the magnetic circuit system in a bending mode from the periphery of the main body ring and abuts against the elastic sheet, and the lead is connected to the surface, deviating from the supporting portion, of the elastic sheet.

In one embodiment, the fixing ring and the elastic sheet are integrally formed into a planar elastic piece;

and/or an abutting part is formed at one end of the supporting part, which is far away from the main body ring, and the abutting part is formed by bending and extending the end part of the supporting part towards the direction of the ring folding part;

and/or the number of the elastic sheets is four, the four elastic sheets are respectively arranged at four corners of the fixing ring, the number of the supporting parts is four, and one of the supporting parts is correspondingly abutted to one of the elastic sheets.

In one embodiment, the end of the voice coil located in the first magnetic gap far from the central part is connected with the lead wire;

and/or one end of the voice coil positioned in the second magnetic gap, which is far away from the central part, is connected with the lead wire, the lead wire is attached to the main body ring and extends from the supporting part, and one end of the lead wire is welded on the elastic sheet;

and/or the vertical height difference between the supporting part and the main body ring is greater than the recessed depth of the bending ring part.

In one embodiment, the periphery of the first shell is protruded outwards to form a first fixed end, the periphery of a centering branch piece is protruded with an external connecting part, and the external connecting part is fixed on the surface of the first fixed end and is used for being electrically communicated with an external circuit;

and/or, the outside protrusion of periphery of second casing is formed with the second stiff end, the second stiff end is equipped with outer contact, another the periphery of centering branch piece corresponds the extension and has conduction portion, conduction portion butt in the surface of second stiff end, and with outer contact switches on.

In an embodiment, a third fixed end is formed by protruding the periphery of the first shell, a first hot-melt riveting column is protruded from the third fixed end, a first extending portion extends outwards from the periphery of the centering disk, a fixing hole is formed in the first extending portion, the fixing hole is matched with the first hot-melt riveting column, and a first bonding pad is arranged on the inner periphery of the first extending portion away from the centering disk;

and/or, the outside protrusion of periphery of second casing is formed with the fourth stiff end, the protruding second hot melt riveting post that is equipped with of fourth stiff end, another the outer peripheral edges of centering disk outwards extend there is the second extension, the second extension seted up with the connecting hole of second hot melt riveting post looks adaptation, the second extension is kept away from the one end of the internal periphery of centering disk is equipped with the second pad.

The utility model further provides sound production equipment which comprises an electronic equipment shell and the loudspeaker arranged in the electronic equipment shell, wherein the loudspeaker is any one of the loudspeakers.

The loudspeaker comprises a magnetic circuit system and two vibration systems, wherein the magnetic circuit system comprises a central magnet and an edge magnet, a separation plate is arranged between the central magnet and the edge magnet, the separation plate is separately connected with a first central magnetic conduction plate arranged on one surface of the central magnet and a first edge magnetic conduction plate arranged on the edge magnet, so that a first magnetic gap and a second magnetic gap are formed, voice coils in the vibration systems positioned on two sides of the magnetic circuit system can be respectively inserted into the first magnetic gap and the second magnetic gap, a structure that one magnetic circuit system drives the two vibration systems to vibrate is realized, the utilization rate of the magnetic circuit system is effectively improved, and the product performance is improved. And the arrangement of the partition plate can replace a magnet structure in the existing structure, so that the use of materials is reduced, the assembly process can be simplified, and the processing cost is effectively reduced. And the first central magnetic conduction plate can promote the magnetic force line of the central magnet, and the first side magnetic conduction plate can promote the magnetic effect of the side magnet, so that the driving effect on the voice coil is promoted. Simultaneously, the vibrating diaphragm is including central part and the ring portion of rolling over, and the sunken direction of the ring portion of rolling over of two vibrating diaphragms all faces magnetic circuit, so, can avoid the ring portion of rolling over to convexly establish towards the outside of speaker, is showing the thickness that has reduced vibration system, has also reduced the whole thickness of speaker, is favorable to the product slimming.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a speaker according to an embodiment of the present invention;

FIG. 2 is a schematic view of the speaker of FIG. 1 from another perspective;

FIG. 3 is a top view of the speaker of FIG. 1;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a partial exploded view of a perspective of the speaker of FIG. 1;

fig. 6 is an exploded view of the overall construction of the loudspeaker shown in fig. 1;

fig. 7 is a top view of the magnetic circuit system and the first housing of the loudspeaker of fig. 1;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 9 is a partial exploded view of the speaker of FIG. 1 from another perspective;

fig. 10 is a partial exploded view of the speaker of fig. 1 from yet another perspective;

FIG. 11 is a top view of the speaker of FIG. 1;

FIG. 12 is a cross-sectional view taken along line C-C of FIG. 11;

FIG. 13 is a cross-sectional view taken along line D-D of FIG. 11;

figure 14 is a top view of a vibration system in the loudspeaker of figure 1;

FIG. 15 is a cross-sectional view taken along line E-E of FIG. 14;

fig. 16 is a schematic structural diagram of another embodiment of the loudspeaker of the present invention;

fig. 17 is a schematic view of the speaker shown in fig. 16 from another perspective.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

Also, the meaning of "and/or" and/or "appearing throughout is meant to encompass three scenarios, exemplified by" A and/or B "including scenario A, or scenario B, or scenarios where both A and B are satisfied.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes 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 at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention provides a loudspeaker 100.

Referring to fig. 1 to 4, in an embodiment of the present invention, a speaker 100 includes a housing assembly 10, a magnetic circuit system 20 and two vibration systems 30, wherein the magnetic circuit system 20 is mounted on the housing assembly 10, the magnetic circuit system 20 includes a central magnet 21, edge magnets 22 surrounding the periphery of the central magnet 21 and disposed at intervals, a first central magnetic conductive plate 23 and a first edge magnetic conductive plate 24, the first central magnetic conductive plate 23 is disposed on a surface of the central magnet 21, the first edge magnetic conductive plate 24 is disposed on a surface of the edge magnet 22 away from the first central magnetic conductive plate 23, a partition plate 25 is disposed in a gap between the central magnet 21 and the edge magnets 22, two ends of the partition plate 25 are respectively connected to the first central magnetic conductive plate 23 and/or the first edge magnetic conductive plate 24, a first magnetic gap 20a is formed between the partition plate 25 and the central magnet 21, and a second magnetic gap 20b is formed between the side magnet 22 and the magnetic core;

two vibration systems 30 are respectively located at two opposite sides of the magnetic circuit system 20, each vibration system 30 includes a diaphragm 31 and a voice coil 32, each diaphragm 31 includes a central portion 311 and a folded ring portion 312, both diaphragms 31 are mounted to the housing assembly 10 through the folded ring portion 312, and two voice coils 32 are respectively connected to a surface of the central portion 311 facing the magnetic circuit system 20 and are respectively inserted into the first magnetic gap 20a and the second magnetic gap 20 b;

in the vibration direction of the voice coil 32, the corrugated rim portions 312 of the two diaphragms 31 are both disposed in a concave manner toward the magnetic circuit system 20.

In this embodiment, the housing assembly 10 is used for fixing the vibration system 30 and the magnetic circuit system 20, plays a certain supporting role, and is used for fixing the loudspeaker 100 to an applied product. The housing assembly 10 may be made of plastic, and is convenient to process and has good structural stability. The housing assembly 10 may be a separate structure or an integrally formed structure, and is not limited herein. The housing assembly 10 is generally flat, and the magnetic circuit system 20 is disposed on the housing assembly 10, and the two vibration systems 30 are respectively disposed on the two sides of the magnetic circuit system 20, so that the overall thickness of the speaker 100 is not too large, thereby reducing the occupied space and facilitating miniaturization. The cross-sectional shape of the housing assembly 10 may be circular, square, polygonal, etc., and is not limited herein and may be set as desired.

Specifically, the magnetic circuit system 20 is disposed in the middle of the housing assembly 10 and is formed with two magnetic gaps. The magnetic circuit system 20 includes a central magnet 21, an edge magnet 22, a first central magnetic conductive plate 23 disposed on a surface of the central magnet 21, and a first edge magnetic conductive plate 24 disposed on a surface of the edge magnet 22, wherein a separation plate 25 is disposed in a gap between the central magnet 21 and the edge magnet 22, and is respectively connected to the first central magnetic conductive plate 23 and the first edge magnetic conductive plate 24, so as to form a first magnetic gap 20a with the central magnet 21, and a second magnetic gap 20b with the edge magnet 22. Optionally, the partition plate 25 may be formed by bending and extending the first side magnetic conductive plate 24, or may be formed by bending and extending the first center magnetic conductive plate 23, or may be formed by bending and abutting the first side magnetic conductive plate 24 and the first center magnetic conductive plate 23 at the same time, or may be formed separately and connected to the first side magnetic conductive plate 24 and the first center magnetic conductive plate 23, which is not limited herein. The partition plate 25 forms the first magnetic gap 20a on the inner side and the second magnetic gap 20b on the outer side, the structure is simple, the utilization rate of the magnetic circuit system 20 is effectively improved, no additional magnet material is used, and the cost is favorably reduced.

Each vibration system 30 includes a diaphragm 31 and a voice coil 32, the material of the diaphragm 31 may be silica gel, the edge of the diaphragm 31 is connected to the edge of the housing assembly 10, one end of the voice coil 32 is connected to the diaphragm 31, and the other end is suspended in a magnetic gap. After the voice coil 32 is connected and conducted with an external circuit, the voice coil 32 introduces current into the magnetic field formed by the magnetic circuit system 20, so that the voice coil 32 moves in the magnetic gap to drive the diaphragm 31 to vibrate, and sound production is realized. In order to improve the vibration effect, the diaphragm 31 includes a folded ring portion 312 and a central portion 311, the central portion 311 is planar and is used for being connected to the voice coil 32 and realizing up-and-down vibration, the folded ring portion 312 is disposed around the central portion 311, and one side of the folded ring portion 312 away from the central portion 311 is connected and fixed to the housing assembly 10, so as to realize the installation of the diaphragm 31. Of course, in order to facilitate the fixing, the diaphragm 31 further includes a fixing portion 313, the fixing portion 313 is annularly disposed on the periphery of the bending portion 312, and is bonded or welded to the housing assembly 10, and the fixing portion 313 is planar, so as to facilitate the connection with the housing assembly 10, and implement a stable connection structure. The materials of the central portion 311 and the corrugated portion 312 may be selected differently to ensure the compliance and stability of the vibration of the diaphragm 31.

It can be understood that the corrugated portion 312 is a concave or convex structure, that is, the corrugated portion 312 between the planar central portion 311 and the planar fixing portion 313 is an arc-shaped structure, so as to facilitate the diaphragm 31 to have good deformation capability. The bending portion 312 may be a regular arc structure, such as a semi-circular arc or an elliptical arc, or may be an irregular curve, which is not limited herein. During vibration, the edge portion 312 vibrates together with the center portion 311, and the vibration stability of the voice coil 32 can be improved, and the voice coil can be kept moving up and down in the axial direction. Here, the direction of depression of the corrugated portion 312 of the two diaphragms 31 is toward the magnetic circuit system 20, that is, when the loudspeaker 100 is in a normal placement state, for example, when the surface of the housing assembly 10 is made parallel to the horizontal plane, the corrugated portion 312 is recessed toward the inside of the loudspeaker 100, so that the loudspeaker 100 does not occupy an external space and does not increase the size of the loudspeaker 100 in the thickness direction.

The loudspeaker 100 of the technical scheme of the utility model comprises a magnetic circuit system 20 and two vibration systems 30, wherein the magnetic circuit system 20 comprises a central magnet 21 and an edge magnet 22, a separation plate 25 is arranged in a gap between the central magnet 21 and the edge magnet 22, and two ends of the separation plate are respectively connected with a first central magnetic conduction plate 23 and a first edge magnetic conduction plate 24, so that a first magnetic gap 20a and a second magnetic gap 20b are formed, voice coils 32 in the vibration systems 30 positioned at two sides of the magnetic circuit system 20 can be respectively inserted into the first magnetic gap 20a and the second magnetic gap 20b, a structure that one magnetic circuit system 20 drives the two vibration systems 30 to vibrate is realized, the utilization rate of the magnetic circuit system 20 is effectively improved, and the product performance is improved. And the arrangement of the partition plate 25 can replace a magnet structure in the existing structure, so that the use of materials is reduced, the assembly process can be simplified, the processing cost is effectively reduced, and the thickness and the weight of the magnetic circuit system 20 can be reduced. The first central magnetic conductive plate 23 can increase the magnetic force lines of the central magnet 21, and the first side magnetic conductive plate 24 can increase the magnetic force effect of the side magnets, thereby increasing the driving effect on the voice coil 32. Meanwhile, the diaphragm 31 includes a central portion 311 and a corrugated portion 312, and the concave directions of the corrugated portions 312 of the two diaphragms 31 all face the magnetic circuit system 20, so that the corrugated portions 312 are prevented from protruding toward the outer side of the speaker 100, the thickness of the vibration system 30 is remarkably reduced, the thickness of the magnetic circuit system 20 is reduced, the overall thickness and weight of the speaker 100 are further reduced, and the light and thin design of a product is facilitated.

Referring to fig. 7 and 8 again, in an embodiment, the first side magnetic conductive plate 24, the partition plate 25 and the first center magnetic conductive plate 23 are integrally formed.

In this embodiment, for further facilitating the manufacturing, the first side magnetic conductive plates 24, the partition plate 25, and the first center magnetic conductive plate 23 are integrally formed, that is, when the number of the side magnets 22 is four, the two first side magnetic conductive plates 24 that are oppositely disposed may be oppositely extended, and the position corresponding to the center magnet 21 is recessed downward, the first center magnetic conductive plate 23 is formed at the bottom of the recessed structure, the partition plate 25 is at the side of the recessed structure, and the other two first side magnetic conductive plates 24 that are opposite may be attached to the surface of the side magnet 22. Thus, the stability of the magnetic circuit system 20 and the separation effect of the two magnetic gaps can be effectively improved, and the acoustic performance of the loudspeaker 100 can be effectively improved.

Referring to fig. 4 and 5, in an embodiment, the vibration system 30 further includes a second central magnetic-conductive plate 26 and a second side magnetic-conductive plate 27, where the second central magnetic-conductive plate 26 is disposed on a surface of the central magnet 21 away from the first central magnetic-conductive plate 23, and the second side magnetic-conductive plate 27 is disposed on a surface of the side magnet 22 away from the first side magnetic-conductive plate 24.

In this embodiment, in order to further promote magnetic effect of magnetic circuit 20, still be provided with second center magnetic conduction plate 26 and second limit magnetic conduction plate 27, both are flat, second center magnetic conduction plate 26 is located central magnet 21 and is deviated from the surface of first center magnetic conduction plate 23, thereby can further strengthen the magnetic line of force of central magnet 21, reduce the magnetic line of force and leak outward, and second limit magnetic conduction plate 27 locates the surface that limit magnet 22 deviates from first limit magnetic conduction plate 24, further promote the magnetic effect of limit magnet 22, magnetic circuit 20's drive effect has wholly been promoted, and then promote speaker 100's acoustic effect. Of course, four edge magnets 22 are generally arranged at the periphery of the central magnet 21, and correspondingly, four second edge magnetic conductive plates 27 are also arranged, so as to achieve a uniform enhancement effect.

Referring to fig. 5, fig. 6 and fig. 9, in an embodiment, the casing assembly 10 includes a first casing 11 and a second casing 12 connected to each other, the first casing 11 is provided with a first mounting hole 111, and the first side flux guide plate 24 is disposed in the first mounting hole 111;

the second casing 12 is provided with a second mounting hole 121, the second side magnetic conductive plate 27 is disposed in the second mounting hole 121, and the periphery of the side magnet 22 is sandwiched between the first casing 11 and the second casing 12.

In this embodiment, in order to fix the magnetic circuit system 20 conveniently, the housing assembly 10 includes a first housing 11 and a second housing 12, and the first housing 11 and the second housing 12 may be connected by a snap, an adhesive, or a weld, which is not limited herein. The first casing 11 is annular, a first mounting hole 111 is formed in the middle of the first casing, the first edge magnetic conductive plate 24 is fixed to the outer edge of the first mounting hole 111, and when the first central magnetic conductive plate 23, the first edge magnetic conductive plate 24 and the partition plate 25 are integrally formed, the central magnet 21 can be arranged on the first central magnetic conductive plate 23, and the second central magnetic conductive plate 26 is arranged on the central magnet 21. The second casing 12 is also annular, the external shape of the second casing is substantially the same as that of the first casing 11, the middle part of the second casing 12 is provided with a second mounting hole 121 which is substantially the same as that of the first mounting hole 111, the second side magnetic conductive plate 27 is mounted at the outer edge of the second mounting hole 121 and is attached to the surface of the side magnet 22, and the outer periphery of the side magnet 22 is clamped between the first casing 11 and the second casing 12, so that the stability of the connection between the casing assembly 10 and the magnetic circuit system 20 can be further improved, the usability of the structure of the loudspeaker 100 can be further ensured, and the fixing parts 313 of the vibrating diaphragms 31 of the vibrating system 30 are respectively fixed on the surfaces of the first casing 11 and the second casing 12 which are away from each other.

Here, the first housing 11 and the second housing 12 may be both provided in a rectangular parallelepiped shape, and the first mounting hole 111 and the second mounting hole 121 are also substantially rectangular parallelepiped shapes, so that the structural utilization rate of the housing assembly 10 can be effectively improved, and the volume occupied by the housing assembly 10 can be reduced to the maximum extent while the structural stability is ensured.

Referring to fig. 9 and 10, in an embodiment, the first side magnetic conductive plate 24 is connected to the first casing 11 by injection molding;

and/or the second side magnetic conduction plate 27 is connected to the second casing 12 in an injection molding manner.

In order to improve the structural stability, in this embodiment, the first side magnetic conductive plate 24 and the first casing 11 may be configured as an integral structure. Of course, the material of first edge magnetic conduction plate 24 is conductive metal, the material of first casing 11 can be plastics, and first edge magnetic conduction plate 24 and first casing 11 are the integrated into one piece structure, can be through integrative injection moulding to effectively guarantee structural strength and stability, and convenient processing. Similarly, when the first casing 11 and the first side magnetic conductive plate 24 are of an integrally formed structure, the second side magnetic conductive plate 27 and the second casing 12 may be processed and formed in an integrally injection molding manner, so as to ensure the structural stability of the second casing 12.

Referring to fig. 9 to 12, in an embodiment, the vibration system 30 further includes a centering leg 33, the centering leg 33 is located on one side of the magnetic circuit system 20, an outer periphery of the centering leg 33 is fixed to the housing assembly 10, and an inner periphery of the centering leg 33 is connected to the corresponding voice coil 32 through a lead 50.

In order to further ensure the position of the voice coil 32 in the first magnetic gap 20a or the second magnetic gap 20b and ensure that the moving direction vibrates up and down only along the axial direction, in the embodiment, one or two centering branches 33 are set, one centering branch 33 is located on one side of the magnetic circuit system 20, and the two centering branches 33 are respectively arranged on two sides of the magnetic circuit system 20. Here, the outer peripheral edge of centering branch piece 33 is fixed in housing assembly 10, and the inner periphery is connected to voice coil 32 through lead wire 50, and on the one hand, centering branch piece 33 is electrically conductive metal spare, for example copper, has better structural stability, conveniently communicates with the outside, realizes the electric conductance to the realization is to the power supply of voice coil 32. On the other hand, the damper 33 itself may be elastically deformed, and may not affect the vertical vibration of the voice coil 32 when a certain supporting and holding effect is exerted on the voice coil 32. And the lead 50 can be bent accordingly according to the arrangement of the inner space, thereby making the structural design more free.

Referring to fig. 10 and 12, in an embodiment, two centering branch pieces 33 are provided, each centering branch piece 33 includes a fixing ring 331 and a spring plate 332 disposed in the fixing ring 331, and the fixing ring 331 is mounted on the housing assembly 10;

the vibration system 30 further includes a connector 34, the connector 34 includes a main body ring 341 and a support portion 342, the main body ring 341 is connected to the central portion 311, the support portion 342 extends from the periphery of the main body ring 341 to the side of the magnetic circuit system 20 in a bending manner and abuts against the spring plate 332, and the lead 50 is connected to the surface of the spring plate 332 away from the support portion 342.

In this embodiment, in order to improve the vibration stability of the two vibration systems 30, the centering pads 33 are two and connected to the two voice coils 32, respectively. Here, the centering branch piece 33 includes a fixing ring 331 and a spring plate 332 disposed in the fixing ring 331, and the fixing ring 331 increases a connection area with the housing assembly 10, so that the connection is more stable. The spring plate 332 is disposed inside the fixing ring 331 and extends into the lead 50 connected to the voice coil 32, so that the magnetic circuit system 20 is also provided with an avoiding space at a position corresponding to the spring plate 332, and gaps of corners exist among the four side magnets 22, the first side magnetic conductive plates 24 and the second side magnetic conductive plates 27, so that the spring plate 332 can be located at the gap, thereby effectively utilizing the space and reducing interference to magnetic gaps.

It can be understood that, in order to ensure the stability of the vibration of the voice coil 32 and the diaphragm 31, the number of the elastic sheets 332 may be two, three or more than three, and the plurality of elastic sheets 332 are symmetrically arranged around the periphery of the voice coil 32, so as to provide uniform elastic force and supporting force to ensure the stability of the vibration of the voice coil 32. And one end of the elastic sheet 332 connected with the voice coil 32 through the lead 50 is located on the same horizontal plane, so that the voice coil 32 can be ensured to be always in a vertical state, and the vibration in the vertical direction can be maintained, so as to reduce the distortion of the loudspeaker 100.

Since the position of the elastic piece 332 is just at the position of the bending part 312, in order to avoid interference, the centering branch 33 is connected to the diaphragm 31 through the connecting piece 34, and the material of the connecting piece 34 may be metal or plastic, which is not limited herein. The diaphragm 31 and the main body ring 341 are connected to the central portion 311 to form a stable connection structure, and the support portion 342 is formed by bending and extending the periphery of the main body ring 341 toward one side of the magnetic circuit system 20, that is, a certain height difference exists between the main body ring 341 and the support portion 342. The supporting portion 342 can provide a certain supporting force for the elastic sheet 332, can effectively prevent the interference between the elastic sheet 332 and the corrugated portion 312, and can flexibly set the position of the centering support sheet 33 according to the protruding height of the supporting portion 342, thereby providing conditions for the design of ultrathin products.

Optionally, on the basis of the above, in order to further reduce interference, a vertical height difference between the support portion 342 and the main body ring 341 is greater than a recessed depth of the annular folding portion 312, so that a certain avoidance space is provided between the support portion 342 and the annular folding portion 312, and vibration at the annular folding portion 312 is not hindered, so that acoustic performance of the speaker 100 is not affected.

Referring to fig. 13 to 15, in an embodiment, the fixing ring 331 and the elastic sheet 332 are a planar elastic member integrally formed;

and/or an abutting part 343 is formed at one end of the supporting part 342 far away from the main body ring 341, and the abutting part 343 is formed by bending and extending the end of the supporting part 342 towards the direction of the ring-folding part 312;

and/or the number of the elastic sheets 332 is four, the four elastic sheets 332 are respectively arranged at four corners of the fixing ring 331, the number of the support parts 342 is four, and one support part 342 is correspondingly abutted to one elastic sheet 332.

Here, in order to facilitate the welding with the voice coil 32, the elastic piece 332 includes an inner connection portion 333 and a planar extension portion, the inner connection portion 333 is welded with the lead 50 and the support portion 342, and the planar extension portion is bent and extended between the inner connection portion 333 and the fixing ring 331, so that the elasticity and the compliance of the elastic piece 332 can be improved as much as possible, and the acoustic performance of the speaker 100 can be improved. Specifically, the plane extension part is in an irregular bent shape, the structural stability is good, and the distortion condition can be effectively reduced while the plane extension part has good compliance. Simultaneously, also set up inner connecting portion 333 and solid fixed ring 331 as the sheet, and the three is the integrated into one piece structure, compares in the bullet ripples structure, can reduce speaker 100 height in its vibration direction to reduced speaker 100's volume, realized its miniaturization more easily, and can have better resistance to deformation ability and fatigue resistance, showing improvement structural stability, effectively reduce the fracture risk.

On the basis of the above structure, the end of the supporting portion 342 away from the main body ring 341 is formed with the abutting portion 343, and the abutting portion 343 is formed by bending and extending the end of the supporting portion 342 toward the direction of the ring-folded portion 312, so as to form a structure parallel to the inner connecting portion 333, increase the contact area, and provide a more stable supporting function.

In order to provide stable support to the maximum extent, four spring plates 332 are disposed at four corner positions of the fixing ring 331, respectively, and the gap formed by the magnetic circuit system 20 is utilized to the maximum extent, so as to further improve the stability of the vibration of the voice coil 32, and not increase the occupied space. When the elastic pieces 332 are provided with four, the supporting portions 342 are correspondingly provided with four, so that the stability and uniformity of the support are ensured. Of course, the shapes of the elastic sheets 332 of the two centering fins 33 may be the same or different, and are not limited herein.

Referring to fig. 9 and 10 again, in an embodiment, the lead 50 is connected to an end of the voice coil 32 located in the first magnetic gap 20a away from the central portion 311;

and/or, the lead 50 is connected to one end of the voice coil 32 located in the second magnetic gap 20b, which is far from the central portion 311, and the lead 50 is attached to the main body ring 341 and the supporting portion 342 to extend, and one end of the lead is welded to the elastic sheet 332.

Since the two magnetic gaps are coaxially arranged, the two voice coils 32 are also coaxially arranged, wherein one voice coil 32 has a small size, and the other voice coil 32 has a large size, and is enclosed around the small-sized voice coil 32, and of course, here, the projection on the magnetic circuit system 20, actually, the two voice coils 32 may not contact each other in the axial direction. The voice coil 32 of the first magnetic gap 20a located on the inner side is small in size and is directly connected to the center portion 311, that is, when a dome is provided in the middle of the center portion 311, it is directly connected to the dome. One end of the lead 50 is connected to the end of the voice coil 32 far from the center 311, so that the lead 50 can be directly connected to the spring plate 332, convenience is improved, vibration of the voice coil 32 in the first magnetic gap 20a is not affected, and acoustic performance of the product is improved.

The voice coil 32 of the second magnetic gap 20b located outside is larger in size and is closer to the inner side of the main body ring 341, at this time, one end of the lead 50 is also connected to one end of the voice coil 32 away from the central portion 311, and the lead 50 extends along the voice coil 32, the main body ring 341 and the support portion 342 and is then soldered to the surface of the elastic sheet 332, and the routing manner of the lead 50 is a three-dimensional straight-line process, that is, the lead 50 extends in the height direction of the voice coil 32, extends in the plane of the fixing ring 331, and extends along the height of the support portion 342, so that the acoustic structure can adapt to a more complex structure, the flexibility of the acoustic structure design is increased, and the influence on other components is reduced. The extended position of the lead 50 may be coated with glue to achieve adhesive fixation.

Referring to fig. 1 and fig. 2 again, in an embodiment, a first fixed end 112 is formed by protruding the periphery of the first housing 11, an external connection portion 334 is protruding from the outer periphery of the centering branch 33, and the external connection portion 334 is fixed on the surface of the first fixed end 112 for electrically connecting with an external circuit;

and/or, the outer peripheral edge of the second casing 12 is formed with a second fixed end 122, the outer contact 60 is installed to the second fixed end 122, another the periphery of the centering branch piece 33 corresponds to extend there is a conduction portion 335, the conduction portion 335 abuts on the surface of the second fixed end 122, and the outer contact 60 is conducted.

In the present embodiment, in order to fix the speaker 100, a first fixing end 112 is formed on the periphery of the first housing 11. Meanwhile, in order to supply power to the voice coil 32 on the side, an external connection portion 334 is protruded on the outer periphery of the centering branch piece 33 on the side, and the external connection portion 334 is supported on the surface of the first fixed end 112, so that the welding connection is facilitated.

In order to facilitate power supply to the other voice coil 32, a second fixing end 122 is formed on the periphery of the second casing 12, the outer contact member 60 is installed on the second fixing end 122, and is made of a conductive metal, for example, a bent metal sheet, and is inserted into the installation cavity formed in the second fixing end 122 and respectively exposed on the upper surface and the lower surface of the second fixing end 122, the exposed point on the upper surface serves as an outer conduction point, and the exposed point on the lower surface serves as an electrical connection with the conduction portion 335 of the centering branch piece 33 exposed on the second casing 12. The conductive part 335 is directly bonded or welded to the exposed portion of the outer contact 60, thereby achieving electrical connection. Alternatively, the second fixed ends 122 are two, and the corresponding conduction parts 335 are electrically connected to the two outer contacts 60, thereby improving the stability of the electrical conduction.

Here, the second fixing end 122 and the first fixing end 112 are both disposed at the same side of the first housing 11 and the second housing 12, so that the speaker 100 is more conveniently connected when being conducted with the outside, the assembling efficiency is improved, and the conducting stability is ensured.

In addition, for convenience of processing and assembling, the two diaphragms 31 are arranged in a mirror symmetry manner or have the same structure. The mirror symmetry arrangement means that the two diaphragms 31 in the two vibration systems 30 are arranged in a mirror image manner in terms of structure and shape, each diaphragm 31 includes a central portion 311, a corrugated portion 312 and a fixing portion 313, and the shapes and sizes of the central portion 311 and the corrugated portion 312 of the two diaphragms are both mirror images and the same, it can be understood that the shapes and sizes mentioned here are mirror images, and process errors are not considered, that is, within the process error range, the two diaphragms 31 are not identical in shape and size and also belong to the mirror images of the present application, so that the processing cost is further reduced. On the other hand, it is also possible to set the two diaphragms 31 to have different sizes, that is, the radiation areas of the two diaphragms 31 are different, and in this case, the opening areas of the corrugated portion 312 for installing the diaphragms 31 of the first shell 1111 and the second shell 12 of the shell set are different.

Simultaneously, with the central axis coincidence setting of first magnetic gap 20a and second magnetic gap 20b to make the central axis of two voice coils 32 coincide mutually, combine two vibrating diaphragms 31 that size and shape are all the same, can effectively utilize speaker 100's inner space, make the central axis of two vibrating diaphragms 31 coincide mutually, thereby when increasing the vibration effect, can not increase the transverse area, further improve magnetic drive efficiency.

Referring to fig. 16 and fig. 17, different from the structure of the foregoing embodiment, in an embodiment, a third fixed end 113 is formed at a periphery of the first housing 11 in an outward protruding manner, the third fixed end 113 is provided with a first thermal melting rivet column 1131 in a protruding manner, a first extending portion 70 is formed at an outer periphery of the centering branch piece 33 in an outward extending manner, the first extending portion 70 is provided with a fixing hole 71, the fixing hole 71 is adapted to the first thermal melting rivet column 1131, and a first pad 72 is provided at an end of the first extending portion 70 away from an inner periphery of the centering branch piece 33;

and/or, the periphery of second casing 12 outwards bulges and is formed with fourth stiff end 123, the protruding second hot melt riveting post 1231 that is equipped with of fourth stiff end 123, another the outer peripheral edges of centering props 33 are connected with second extension 80, second extension 80 seted up with the connecting hole 81 of second hot melt riveting post 1231 looks adaptation, second extension 80 is kept away from the one end of the internal periphery of centering props is equipped with second pad 82.

In this embodiment, in order to fix the speaker 100 and facilitate connection with an external circuit, a third fixing end 113 is formed at the periphery of the first casing 11 in an outward protruding manner, and the third fixing end 113 is used to facilitate fixing the end of the centering branch piece 33 exposed out of the first casing 11 and serves as a supporting point for connection with an external circuit. The centering branch piece 33 is connected with the first extending portion 70, the first branch piece and the first extending portion 70 can be of an integrated structure, for example, a flexible circuit board is used for integrated forming, the first pad 72 is arranged at one end of the first extending portion 70, on one hand, compared with the pad arranged on the first fixed end 112, the size of the first fixed end 112 can be smaller, and the occupied space of the whole product is reduced. On the other hand, the first extension portion 70 can further make the position of the speaker 100 more flexible, and is more suitable for the internal structural layout of the product. Here, in order to further realize the connection stability, the first hot-melt rivet column 1131 is disposed on the third fixed end 113, the corresponding fixing hole 71 is opened in the first extending portion 70, the first hot-melt rivet column 1131 is sleeved with the first extending portion, and then the first extending portion is hot-melt riveted, so that the stable connection structure is realized, the use of the lead wire can be reduced, the height of the speaker 100 in the vibration direction is effectively reduced, and the energization stability is improved.

Similarly, the periphery of second casing 12 outwards protrudes and is formed with fourth stiff end 123, the protruding two second hot melt riveting posts 1231 that are equipped with of fourth stiff end 123, the periphery that will center the brace 33 is connected with second extension 80 towards the position of fourth stiff end 123, two corresponding connecting holes 81 have been seted up to this second extension 80, thereby establish with second hot melt riveting post 1231 cover, through riveting connection behind the hot melt, form stable connection switch-on relation, center the brace 33 and second extension 80 can be integrated into one piece structure, here, also can select the flexible circuit board preparation, set up second pad 82 in the one end of second extension 80, communicate with outside electricity. On the one hand, compared with the pad arranged on the second fixing end 122, the size of the second fixing end 122 can be smaller, and the space occupation of the whole product is reduced. On the other hand, the second extension portion 80 can further make the position of the speaker 100 more flexible, and is more suitable for the internal structural layout of the product.

To further protect the vibration system 30, the housing assembly 10 further includes a front cover 13, and the front cover 13 may be made of plastic or metal, and has a thin plate shape, and the outer edge shape of the front cover matches with the first housing 11 and the second housing 12. Because of the inward recess of the corrugated portion 312 of the diaphragm 31, the external space is not affected, so that the periphery of the front cover 13 is fixed to the fixing portion 313 of the diaphragm 31, thereby effectively preventing the diaphragm 31 from falling off, improving the structural stability of the whole loudspeaker 100, and prolonging the service life of the loudspeaker. Of course, in order to avoid the vibration of the diaphragm 31, a groove is concavely formed at the middle position thereof toward a direction away from the diaphragm 31, and a sound outlet hole 131 is formed at the bottom of the groove for transmitting sound.

In addition, the position of the sound outlet 131 can be covered with the dust screen 14, so that the protection of the diaphragm 31 is further improved, the dust or external moisture is effectively reduced from entering the loudspeaker 100, and the use performance of the loudspeaker is further improved.

The utility model also provides a sound generating device (not shown), which comprises an electronic device housing and a loudspeaker 100 arranged on the electronic device housing, wherein the loudspeaker 100 is the loudspeaker 100 as described in any one of the above. Since the speaker 100 of the sound generating apparatus adopts all technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are provided, and details are not repeated herein.

Here, the sound generating device may be a sound box, a mobile phone, an earphone, or other electrical devices that need to be generated, and is not limited herein. Of course, the sound generating device may also be applied in vehicles, as vehicle mounted speakers, consumer speakers, etc.

The above description is only an alternative embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, which are within the spirit of the present invention, are included in the scope of the present invention.

Claims (12)

1. A loudspeaker, characterized in that the loudspeaker comprises:

a housing assembly;

the magnetic circuit system is arranged on the shell assembly and comprises a central magnet, edge magnets, a first central magnetic conduction plate and a first edge magnetic conduction plate, wherein the edge magnets are arranged at intervals around the periphery of the central magnet, the first central magnetic conduction plate is arranged on one surface of the central magnet, the first edge magnetic conduction plate is arranged on the surface, deviating from the first central magnetic conduction plate, of the edge magnets, a partition plate is arranged in a gap between the central magnet and the edge magnets, two ends of the partition plate are respectively connected with the first central magnetic conduction plate and the first edge magnetic conduction plate, a first magnetic gap is formed between the partition plate and the central magnet, and a second magnetic gap is formed between the partition plate and the edge magnets; and

the two vibration systems are respectively positioned on two opposite sides of the magnetic circuit system, each vibration system comprises a vibration diaphragm and a voice coil, each vibration diaphragm comprises a central part and a corrugated ring part, the two vibration diaphragms are both installed on the shell component through the corrugated ring parts, and the two voice coils are respectively connected to the surface of the central part facing the magnetic circuit system and are respectively inserted into the first magnetic gap and the second magnetic gap;

in the vibration direction of the voice coil, the bending ring parts of the two vibrating diaphragms are both arranged towards the direction of the magnetic circuit system in a sunken mode.

2. The loudspeaker of claim 1, wherein said first side magnetic plate, said divider plate, and said first center magnetic plate are of an integrally formed construction.

3. The loudspeaker of claim 2, wherein said vibration system further comprises a second center magnetic plate and a second edge magnetic plate, said second center magnetic plate being disposed on a surface of said center magnet facing away from said first center magnetic plate, said second edge magnetic plate being disposed on a surface of said edge magnet facing away from said first edge magnetic plate.

4. The loudspeaker of claim 3, wherein the housing assembly comprises a first housing and a second housing connected to each other, the first housing defining a first mounting hole, the first side flux guide plate being disposed in the first mounting hole;

the second shell is provided with a second mounting hole, the second edge magnetic conduction plate is arranged in the second mounting hole, and the periphery of the edge magnet is clamped between the first shell and the second shell.

5. The loudspeaker of claim 4, wherein said first edge permeable plate is injection molded to said first housing;

and/or the second side magnetic conduction plate is connected to the second shell in an injection molding mode.

6. The loudspeaker of claim 1, wherein the vibration system further comprises a damper located on one side of the magnetic circuit system, an outer periphery of the damper being fixed to the housing assembly, and an inner periphery of the damper being connected to the corresponding voice coil by a lead wire.

7. The loudspeaker of claim 6, wherein there are two of said armatures, each of said armatures comprising a retaining ring and a spring within said retaining ring, said retaining rings being mounted to said housing assembly;

the vibration system further comprises a connecting piece, the connecting piece comprises a main body ring and a supporting portion, the main body ring is connected to the central portion, the supporting portion extends towards one side of the magnetic circuit system in a bending mode from the periphery of the main body ring and abuts against the elastic sheet, and the lead is connected to the surface, deviating from the supporting portion, of the elastic sheet.

8. The loudspeaker of claim 7, wherein the fixing ring and the spring plate are integrally formed as a planar elastic member;

and/or an abutting part is formed at one end of the supporting part, which is far away from the main body ring, and the abutting part is formed by bending and extending the end part of the supporting part towards the direction of the ring folding part;

and/or the number of the elastic sheets is four, the four elastic sheets are respectively arranged at four corners of the fixing ring, the number of the supporting parts is four, and one of the supporting parts is correspondingly abutted to one of the elastic sheets.

9. The loudspeaker of claim 7, wherein said lead is connected to an end of said voice coil located in said first magnetic gap remote from said center portion;

and/or one end of the voice coil positioned in the second magnetic gap, which is far away from the central part, is connected with the lead wire, the lead wire is attached to the main body ring and extends from the supporting part, and one end of the lead wire is welded on the elastic sheet;

and/or the vertical height difference between the supporting part and the main body ring is greater than the recessed depth of the bending ring part.

10. The speaker of claim 6, wherein the first housing has a first fixing end formed by protruding outward from the periphery thereof, and an external connecting portion protruding from the periphery of the center piece, the external connecting portion being fixed to the first fixing end for electrical connection with an external circuit;

and/or, the outside protrusion of periphery of second casing is formed with the second stiff end, the second stiff end is equipped with outer contact, another the periphery of centering branch piece corresponds the extension and has conduction portion, conduction portion butt in the surface of second stiff end, and with outer contact switches on.

11. The loudspeaker according to claim 6, wherein a third fixing end is formed by protruding the periphery of the first shell, the third fixing end is provided with a first hot-melting riveting column in a protruding manner, a first extending portion extends outwards from the periphery of the damper, the first extending portion is provided with a fixing hole, the fixing hole is matched with the first hot-melting riveting column, and a first pad is arranged at one end of the first extending portion, which is far away from the inner periphery of the damper;

and/or, the outside protrusion of periphery of second casing is formed with the fourth stiff end, the protruding second hot melt riveting post that is equipped with of fourth stiff end, another the outer peripheral edges of centering disk outwards extend there is the second extension, the second extension seted up with the connecting hole of second hot melt riveting post looks adaptation, the second extension is kept away from the one end of the internal periphery of centering disk is equipped with the second pad.

12. A sound generating device comprising an electronic device housing and a speaker disposed within the electronic device housing, the speaker being as claimed in any one of claims 1 to 11.

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