Loudspeaker

Abstract

The utility model relates to a loudspeaker which comprises a magnetic circuit system and a vibration system. The magnetic circuit system comprises a first magnetic circuit unit, a second magnetic circuit unit and a top magnet; the first magnetic circuit unit comprises a first middle magnet, a first side magnet and a second side magnet; the second magnetic circuit unit comprises a second middle magnet, a third side magnet and a fourth side magnet; the orientation of the magnetic pole of the top magnet in the first direction is opposite to the orientation of the magnetic pole of the first middle magnet and the orientation of the magnetic pole of the second middle magnet. The magnetic pole orientation of the first side magnet, the magnetic pole orientation of the second side magnet, the magnetic pole orientation of the third side magnet and the magnetic pole orientation of the fourth side magnet are the same. The vibration system includes a first vibration unit and a second vibration unit that move back and forth in a magnetic field. The sound pressure level and the sensitivity of the loudspeaker can be improved.

Description

Technical Field

[0001] The present application relates to the field of acoustic technology, and more particularly, to a loudspeaker. Background Art

[0002] A loudspeaker, also known as a horn, is a transducer device that converts electrical signals into sound signals. Existing speakers consist of a diaphragm, a coil, and a magnet, where the coil drives the diaphragm to vibrate under the influence of a magnetic field. Many speakers have simple structures and produce low sound pressure levels. Utility Model Content

[0003] The technical problem to be solved by the present application is to provide an improved loudspeaker in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present application to solve the technical problem is to construct a loudspeaker, comprising:

[0005] A magnetic circuit system, comprising a first magnetic circuit unit, a second magnetic circuit unit, and a top magnet; the top magnet is arranged between the first magnetic circuit unit and the second magnetic circuit unit along a first direction; the first magnetic circuit unit comprises a first central magnet, a first side magnet, and a second side magnet, the first side magnet and the second side magnet being arranged on opposite sides of the first central magnet along a second direction; the second magnetic circuit unit comprises a second central magnet, a third side magnet, and a fourth side magnet, the third side magnet and the fourth side magnet being arranged on opposite sides of the second central magnet along a second direction; the first direction and the second direction are perpendicular to each other; and

[0006] A vibration system comprising a first vibration unit and a second vibration unit; the first vibration unit is located between the top magnet and the first magnetic circuit unit in the first direction, and the second vibration unit is located between the top magnet and the second magnetic circuit unit in the first direction; the first vibration unit comprises a first diaphragm and a first coil disposed on the first diaphragm; the first coil corresponds to the top magnet and the first middle magnet, respectively; the second vibration unit comprises a second diaphragm and a second coil disposed on the second diaphragm, the second coil corresponds to the top magnet and the second middle magnet, respectively;

[0007] In which, the orientation of the magnetic pole of the top magnet in the first direction is opposite to the orientation of the magnetic pole of the first middle magnet and the orientation of the magnetic pole of the second middle magnet, and is the same as the orientation of the magnetic pole of the first side magnet, the magnetic pole of the second side magnet, the magnetic pole of the third side magnet, and the magnetic pole of the fourth side magnet.

[0008] In some embodiments, the speaker also includes a shell, the shell includes a support plate at least partially located within its cavity, and the top magnet is arranged on the support plate; the first vibration unit, the support plate, and the second vibration unit divide the cavity within the shell into a first rear cavity, a first front cavity, a second front cavity, and a second rear cavity in sequence along the first direction.

[0009] In some embodiments, the first magnetic circuit unit is located in the first rear cavity, and the second magnetic circuit unit is located in the second rear cavity; the top magnet is arranged on the support plate, partially located in the first front cavity, and partially located in the second front cavity.

[0010] In some embodiments, the housing includes a first shell and a second shell, the first shell and the second shell together define the chamber, and the support plate is sandwiched between the first shell and the second shell.

[0011] In some embodiments, at least one through hole is provided on the support plate, and the through hole connects the first front cavity and the second front cavity.

[0012] In some embodiments, at least one first sound hole, a first air hole, a second sound hole and a second air hole are formed on the shell; the first sound hole connects the first front cavity with the outside world, and the first air hole connects the first rear cavity with the outside world; the second sound hole connects the second front cavity with the outside world, and the second air hole connects the second rear cavity with the outside world.

[0013] In some embodiments, the first air hole and / or the second air hole are provided with a damping member for adjusting mid- and low-frequency.

[0014] In some embodiments, the first sound outlet hole and the second sound outlet hole are respectively disposed at the first end of the housing, the first air hole and the second air hole are respectively disposed at the second end of the housing, and the first end and the second end are disposed opposite to each other.

[0015] In some embodiments, the number of the first air holes and the number of the second air holes are two, respectively, and they are disposed on two opposite sides of the second end of the housing.

[0016] In some embodiments, the first diaphragm and the second diaphragm respectively include a gasket, a diaphragm and a special-shaped bend; the gasket and the special-shaped bend are both annular, and the special-shaped bend is arranged between the gasket and the diaphragm; the first coil and the second coil are respectively arranged on the diaphragms corresponding to the first diaphragm and the second diaphragm.

[0017] The implementation of this application has at least the following beneficial effects:

[0018] By defining the top magnet, the first magnetic circuit unit, and the second magnetic circuit unit, and by defining the magnetic pole orientations between them, this application increases the number of magnetic lines of force distributed radially along the coil, thereby improving the sound pressure level and sensitivity of the speaker. By arranging for the first and second magnetic circuit units to share a single top magnet, this application reduces the number of components within the speaker, effectively reducing its volume and thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present application will be further described below with reference to the accompanying drawings and embodiments, in which:

[0020] Figure 1 is a structural diagram of a loudspeaker in an embodiment of the present application;

[0021] Figure 2 yes Figure 1 A schematic structural diagram of the loudspeaker shown at another angle;

[0022] Figure 3 yes Figure 1 An exploded view of the loudspeaker is shown;

[0023] Figure 4 yes Figure 1 A schematic cross-sectional view of the loudspeaker shown;

[0024] Figure 5 yes Figure 1 The cross-sectional structure diagram of the loudspeaker shown at another angle;

[0025] Figure 6 yes Figure 5 A local enlarged view of the P part;

[0026] Figure 7 yes Figure 5 A local enlarged view of the Q part in the figure. DETAILED DESCRIPTION

[0027] In order to provide a clearer understanding of the technical features, objectives, and effects of the present application, the specific embodiments of the present application are now described in detail with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art may make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "up", "down", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings or the orientation or position relationship in which the product of this application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this application, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0030] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0031] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0032] Figures 1 to 5 A speaker 1 according to an embodiment of the present application is shown. The speaker 1 may include a magnetic circuit system 10, a vibration system 20, and a housing 30. The magnetic circuit system 10 and the vibration system 20 are each disposed within the housing 30. The magnetic circuit system 10 can generate a magnetic field. When powered, the vibration system 20 can vibrate back and forth in the magnetic field, thereby producing sound.

[0033] like Figures 3 to 5As shown, the magnetic circuit system 10 includes a first magnetic circuit unit 11, a second magnetic circuit unit 12, and a top magnet 13. The top magnet 13 is disposed between the first magnetic circuit unit 11 and the second magnetic circuit unit 12 along a first direction X, and interacts with the first magnetic circuit unit 11 and the second magnetic circuit unit 12 respectively to generate different magnetic flux lines.

[0034] The first magnetic circuit unit 11 includes a first central magnet 111, a first side magnet 112, and a second side magnet 113. The first side magnet 112 and the second side magnet 113 are respectively disposed on opposite sides of the first central magnet 111 and are sequentially arranged along the second direction Y.

[0035] The second magnetic circuit unit 12 includes a second central magnet 121, a third side magnet 122, and a fourth side magnet 123. The third side magnet 122 and the fourth side magnet 123 are respectively disposed on opposite sides of the second central magnet 121 and are sequentially arranged along the second direction Y.

[0036] like Figure 4 and Figure 5 As shown, the second direction Y and the first direction X are perpendicular to each other.

[0037] like Figure 5 As shown, the magnetic poles of each magnet are arranged along the first direction X. The orientation of the magnetic pole of the top magnet 13 in the first direction X is opposite to the orientation of the magnetic pole of the first middle magnet 111 in the first direction X and the orientation of the magnetic pole of the second middle magnet 121 in the first direction X. The orientation of its magnetic pole is also the same as the orientation of the magnetic pole of the first side magnet 112 in the first direction X, the orientation of the magnetic pole of the second side magnet 113 in the first direction X, the orientation of the magnetic pole of the third side magnet 122 in the first direction X, and the orientation of the magnetic pole of the fourth side magnet 123 in the first direction X.

[0038] For example, it is now defined that the first magnetic circuit unit 11 is located on the top side of the top magnet 13 in the first direction X, and the second magnetic circuit unit 12 is located on the bottom side of the top magnet 13 in the first direction X. If the top end of the top magnet 13 is an N pole and the bottom end is an S pole, then the top ends of the first middle magnet 111 and the second middle magnet 121 are S poles and the bottom ends are N poles. The top ends of the first side magnet 112, the second side magnet 113, the third side magnet 122, and the fourth side magnet 123 are N poles and S poles.

[0039] like Figures 3 to 5As shown, the vibration system 20 includes a first vibration unit 21 and a second vibration unit 22, both of which can vibrate under the action of a magnetic field. The first vibration unit 21 is arranged between the top magnet 13 and the first magnetic circuit unit 11 along the first direction X, and vibrates back and forth along the first direction X in the magnetic field constructed by the top magnet 13 and the first magnetic circuit unit 11. The second vibration unit 22 is arranged between the top magnet 13 and the second magnetic circuit unit 12 along the first direction X, and vibrates back and forth along the first direction X in the magnetic field constructed by the top magnet 13 and the second magnetic circuit unit 12.

[0040] The first vibration unit 21 includes a first coil 211 and a first diaphragm 212. The first coil 211 is disposed on the first diaphragm 212 and is configured to vibrate back and forth in a magnetic field when energized, thereby driving the first diaphragm 212 to vibrate. The first coil 211 corresponds to the top magnet 13 and the first middle magnet 111, respectively.

[0041] like Figure 6 As shown, since the magnetic pole orientation of the first central magnet 111 is opposite to the magnetic pole orientation of the first side magnet 112 and the second side magnet 113, such an arrangement can form a first magnetic flux line 100 between the first central magnet 111 and the first side magnet 112, and a first magnetic flux line 100 between the first central magnet 111 and the second side magnet 113 in the magnetic field constructed by the three.

[0042] Because the three magnets of the first magnetic circuit unit 11 are all located on one side of the first coil 211, and the first coil 211 corresponds to the first central magnet 111, the two first magnetic flux lines 100 formed by the three magnets have some magnetic flux lines distributed radially along the first coil 211. After the alternating current flows through the first coil 211, the radially distributed magnetic flux lines allow the first coil 211 to move up and down in the first direction X under the influence of the magnetic flux lines, according to the left-hand rule F=BIL.

[0043] Because the magnetic poles of the first central magnet 111 and the top magnet 13 face opposite directions, a second magnetic flux line 200 is formed in the magnetic field they create. This second magnetic flux line 200 also includes some magnetic flux lines extending radially from the first coil 211. Therefore, when an alternating current flows through the first coil 211, the radially distributed magnetic flux lines allow the first coil 211 to move up and down in the first direction X under the influence of these magnetic flux lines, according to the left-hand rule F = BIL.

[0044] By adjusting the orientation of the magnetic poles of each magnet in the first magnetic circuit unit 11 and the top magnet 13, the number of magnetic lines of force distributed radially along the first coil 211 can be effectively increased, the driving force on the first coil 211 can be increased, and the sound pressure level and sensitivity of the speaker 1 can be effectively improved.

[0045] like Figures 3 to 5 As shown, the second vibration unit 22 includes a second coil 221 and a second diaphragm 222. The second coil 221 is disposed on the second diaphragm 222 and is configured to vibrate back and forth in the magnetic field when energized, thereby driving the second diaphragm 222 to vibrate. The second coil 221 corresponds to the top magnet 13 and the second middle magnet 121, respectively.

[0046] like Figure 7 As shown, since the magnetic pole orientations of the second central magnet 121 are opposite to the magnetic pole orientations of the third side magnet 122 and the fourth side magnet 123, such an arrangement can form a third magnetic flux line 300 between the second central magnet 121 and the third side magnet 122, and a third magnetic flux line 300 between the second central magnet 121 and the fourth side magnet 123 in the magnetic field constructed by the three.

[0047] Because the three magnets of the second magnetic circuit unit 12 are all located on one side of the second coil 221, and the second coil 221 corresponds to the second central magnet 121, the two third magnetic flux lines 300 formed by the three magnets have some magnetic flux lines distributed radially along the second coil 221. After the alternating current flows through the second coil 221, the radially distributed magnetic flux lines allow the second coil 221 to move up and down in the first direction X under the influence of the magnetic flux lines, according to the left-hand rule F = BIL.

[0048] Because the magnetic poles of the second central magnet 121 and the top magnet 13 face opposite directions, fourth magnetic flux lines 400 are formed in the magnetic field they create. These fourth magnetic flux lines 400 also contain some magnetic flux lines extending radially from the second coil 221. Therefore, when the alternating current flows through the second coil 221, due to the presence of radially distributed magnetic flux lines, the second coil 221 can move up and down in the first direction X under the influence of these magnetic flux lines, according to the left-hand rule F = BIL.

[0049] By adjusting the orientation of the magnetic poles of each magnet in the second magnetic circuit unit 12 and the top magnet 13, the number of magnetic lines of force distributed radially in the second coil 221 can be effectively increased, thereby increasing the driving force on the second coil 221 and effectively improving the sound pressure level and sensitivity of the speaker 1.

[0050] The present application can effectively improve the sound pressure level of the speaker 1 and increase the total sound output by providing two magnetic circuit units (a first magnetic circuit unit 11 and a second magnetic circuit unit 12) and two vibration units (a first vibration unit 21 and a second vibration unit 22).

[0051] By providing the first magnetic circuit unit 11 and the second magnetic circuit unit 12 with a shared top magnet 13, the present application can effectively reduce the number of component layers provided in the first direction X, thereby reducing the number of overall components within the speaker 1. This arrangement can effectively reduce the volume and thickness of the speaker 1, thereby achieving miniaturization of the speaker 1.

[0052] like Figures 1 to 3 As shown, the housing 30 may include a first shell 31 and a second shell 32. The first shell 31 may include a top wall and a first sidewall disposed circumferentially therefrom, while the second shell 32 may include a bottom wall and a second sidewall disposed circumferentially therefrom. The first shell 31 and the second shell 32 may be assembled with each other, with the first sidewall and the second sidewall being in contact with each other, thereby defining a relatively closed chamber. The magnetic circuit system 10 and the vibration system 20 are respectively disposed within the chamber.

[0053] In some other optional embodiments, one of the first shell 31 and the second shell 32 may not be provided with a side wall, and the side wall can be sealed on the opening of the other shell to achieve relative closure of the chamber.

[0054] The housing 30 may be in the shape of a cube, a cylinder, a polygonal column, a sphere, a hemisphere, an irregular body, etc. The specific shapes of the magnetic circuit system 10 and the vibration system 20 inside the housing 30 may also be flexibly set according to the shape of the housing 30 and are not specifically limited here.

[0055] The first shell 31 and the second shell 32 can be assembled by a connecting structure such as a snap-fit ​​structure, or can be integrally formed, which is not specifically limited here.

[0056] like Figures 3 to 5 As shown, in some embodiments, the housing 30 further includes a support plate 33, which is at least partially located in the chamber defined by the housing 30. The top magnet 13 is disposed on the support plate 33 to locate its position in the chamber.

[0057] like Figure 1 and Figure 2 As shown, the outer contour of the support plate 33 can be adapted to the cross-sectional contours of the side walls of the first shell 31 and the second shell 32, so as to be sandwiched between the first shell 31 and the second shell 32. This arrangement can achieve a positioning effect and can cooperate with the first shell 31 and the second shell 32 to define a relatively closed chamber.

[0058] In some other optional embodiments, the support plate 33 may be entirely disposed within the cavity defined by the first shell 31 and the second shell 32. The support plate 33 may be positioned within the cavity by providing a supporting and fixing structure on the inner side of the first shell 31 and / or the second shell 32.

[0059] It should be understood that, since the top magnet 13 is located between the first vibration unit 21 and the second vibration unit 22 in the first direction X, and since the top magnet 13 is disposed on the support plate 33, the support plate 33 can be located between the first vibration unit 21 and the second vibration unit 22 in the first direction X.

[0060] like Figure 4 and Figure 5 As shown, in some embodiments, the first vibration unit 21, the support plate 33, and the second vibration unit 22 sequentially divide the chamber within the housing 30 into a first rear chamber 35, a first front chamber 34, a second front chamber 36, and a second rear chamber 37 along the first direction X. The first vibration unit 21 separates the first rear chamber 35 from the first front chamber 34. The support plate 33 separates the first front chamber 34 from the second front chamber 36. The second vibration unit 22 separates the second front chamber 36 from the second rear chamber 37.

[0061] The first magnetic circuit unit 11 may be located in the first rear cavity 35 , and the second magnetic circuit unit 12 may be located in the second rear cavity 37 .

[0062] In some embodiments, the top magnet 13 may be disposed on the support plate 33 so that part of the structure is located in the first front cavity 34 and part of the structure is located in the second front cavity 36 .

[0063] In some embodiments, the first coil 211 can be disposed on a side of the first diaphragm 212 close to the first magnetic circuit unit 11. That is, the first coil 211 can be located in the first rear cavity 35. The second coil 221 can also be disposed on a side of the second diaphragm 222 close to the second magnetic circuit unit 12. That is, the second coil 221 can be located in the second rear cavity 37.

[0064] In some other optional embodiments, the first coil 211 may also be disposed on a side of the first diaphragm 212 close to the top magnet 13, that is, located in the first front cavity 34. The second coil 221 may also be disposed on a side of the second diaphragm 222 close to the top magnet 13, that is, located in the second front cavity 36. The top magnet 13 may also be disposed on one side of the support plate 33, located only in the first front cavity 34 or the second front cavity 36.

[0065] In some embodiments, the support plate 33 may be provided with at least one through hole (not shown) along the thickness direction thereof, and the through hole may connect the first front cavity 34 and the second front cavity 36 .

[0066] By providing this through hole, the high frequency characteristics of the speaker 1 can be improved.

[0067] The shape, size and location of the through hole on the support plate 33 can be flexibly selected and are not specifically limited here.

[0068] like Figure 1 and Figure 2 As shown, the housing 30 is formed with at least one first sound outlet hole 311 , at least one first air hole 312 , at least one second sound outlet hole 321 and at least one second air hole 322 .

[0069] See also Figure 4 The first sound outlet 311 connects the first front cavity 34 to the outside. The first air hole 312 connects the first rear cavity 35 to the outside. The second sound outlet 321 connects the second front cavity 36 to the outside. The second air hole 322 connects the second rear cavity 37 to the outside.

[0070] exist Figure 4 In the illustrated embodiment, the first sound outlet hole 311 and the first air hole 312 are disposed on the first housing 31 , and the second sound outlet hole 321 and the second air hole 322 are disposed on the second housing 32 .

[0071] In some embodiments, a damping member (not shown in the figure) such as a mesh may be further provided on the first air hole 312 and / or the second air hole 322 to flexibly adjust the mid- and low-frequency of the speaker 1 .

[0072] like Figure 4 As shown, in some embodiments, the first sound outlet 311 and the second sound outlet 321 can be disposed at the first end of the housing 30. The first air hole 312 and the second air hole 322 are respectively disposed at the second end of the housing 30. The first end and the second end are two opposite ends of the housing 30.

[0073] By arranging the sound outlet and the air hole at opposite ends of the housing 30 , the mutual influence between the front cavity and the rear cavity can be reduced.

[0074] It is important to understand that if Figure 4 As shown, the housing 30 is defined as being longitudinally arranged along a third direction Z, which is perpendicular to the first direction X and the second direction Y. The first end and the second end of the housing 30 are two opposite ends of the housing 30 along the third direction Z.

[0075] The four side walls of the housing 30 are defined as a first side wall 301, a second side wall 302, a third side wall 303, and a fourth side wall 304. The first side wall 301 is located at a first end of the housing 30, the second side wall 302 is located at a second end of the housing 30, and the third side wall 303 and the fourth side wall 304 are connected to the first side wall 301 and the second side wall 302, respectively.

[0076] Then, Figure 4 Taking the cubic shell 30 shown as an example, “the first sound hole 311 and the second sound hole 321 are arranged at the first end of the shell 30”, it can be understood that the first sound hole 311 and / or the second sound hole 321 are arranged on the first side wall 301 of the shell 30, and can also be understood as being arranged on the third side wall 303 and / or the fourth side wall 304 close to the end of the first side wall 301.

[0077] “The first air hole 312 and the second air hole 322 are respectively arranged at the second end of the shell 30” can be understood as the first air hole 312 and / or the second air hole 322 are arranged on the second side wall 302 of the shell 30, and can also be understood as being arranged on the end of the third side wall 303 and / or the fourth side wall 304 close to the second side wall 302.

[0078] In some embodiments, the number of the first air hole 312 and the number of the second air hole 322 can be two, respectively, and they are respectively disposed on two opposite sides of the second end of the housing 30 .

[0079] For example, in Figure 1 and Figure 2 In the illustrated embodiment, the first sound outlet 311 and the second sound outlet 321 are both disposed on the first sidewall 301, and the line connecting their centers extends parallel to the first direction X. There are two first air holes 312, one each disposed on the third sidewall 303 and the fourth sidewall 304 near the second sidewall 302, and the line connecting the two extends parallel to the second direction Y. There are two second air holes 322, one each disposed on the third sidewall 303 and the fourth sidewall 304 near the second sidewall 302, and the line connecting the two extends parallel to the second direction Y. The line connecting the first and second air holes 312, 322 on the third sidewall 303 extends parallel to the first direction X, and the line connecting the first and second air holes 312, 322 on the fourth sidewall 304 extends parallel to the first direction X.

[0080] It should be understood that the number of the first sound holes 311 and the second sound holes 321 can be two or more. The number of the first sound holes 311, the second sound holes 321, the first air holes 312, and the second air holes 322 can be the same or different. The positions of the four can correspond to each other or not.

[0081] like Figures 3 to 5 As shown, since the housing 30 is in a cube shape in the illustrated embodiment, each magnet therein can also be configured to be in a cube shape to more efficiently utilize the space inside the housing 30 and improve space utilization.

[0082] Since the first coil 211 corresponds to the top magnet 13 and the first middle magnet 111 respectively, and the second coil 221 corresponds to the top magnet 13 and the second middle magnet 121 respectively, the first coil 211, the top magnet 13, the first middle magnet 111, the second coil 221, and the second middle magnet 121 can be arranged corresponding to each other.

[0083] That is, if Figure 5 As shown, the first coil 211, the top magnet 13, the first middle magnet 111, the second coil 221, and the second middle magnet 121 are substantially coaxially arranged at the angle shown in the figure.

[0084] In some embodiments, the first side magnet 112 and the second side magnet 113 may be symmetrically disposed on opposite sides of the first central magnet 111 . The third side magnet 122 and the fourth side magnet 123 may also be symmetrically disposed on opposite sides of the second central magnet 121 .

[0085] The distances between the first side magnet 112 and the second side magnet 113 and the first central magnet 111, as well as the distances between the third side magnet 122 and the fourth side magnet 123 and the second central magnet 121, can be flexibly set. The relative spacing between the two magnets is determined to ensure that the first magnetic flux line 100, the second magnetic flux line 200, the third magnetic flux line 300, and the fourth magnetic flux line 400 all have corresponding magnetic flux lines, distributed radially along the coil.

[0086] In some other optional embodiments, the first side magnet 112, and / or the second side magnet 113, and / or the third side magnet 122, and / or the fourth side magnet 123 may also be configured in other shapes such as a cylinder, a polygonal column, or a sphere. The first side magnet 112 and the second side magnet 113 may also be configured in a ring shape or other shape, and be spaced apart around the circumference of the first central magnet 111. The third side magnet 122 and the fourth side magnet 123 may also be configured in a ring shape or other shape, and be spaced apart around the circumference of the second central magnet 121.

[0087] In some embodiments, the first central magnet 111, the first side magnet 112, and the second side magnet 113 can be fixed to the top wall of the first housing 31 by embedding, bonding, etc. The second central magnet 121, the third side magnet 122, and the fourth side magnet 123 can be fixed to the bottom wall of the second housing 32 by embedding, bonding, etc.

[0088] like Figure 3 As shown, in some embodiments, the first diaphragm 212 and the second diaphragm 222 each include a gasket 201, a diaphragm 202, and a special-shaped bend 203. The gasket 201 is annular, with its outer periphery fixed within the housing 30. The special-shaped bend 203 is also annular and connects between the inner periphery of the gasket 201 and the outer periphery of the diaphragm 202. The diaphragm 202 is disposed within the special-shaped bend 203, and the coil is fixed to the diaphragm 202.

[0089] The cross-section of the irregular bend 203 along the first direction X can be an arc, a concave shape, a bend, an arch, or other shapes, so that the sum of the areas of the irregular bend 203 and the diaphragm 202 is larger than the area defined by the inner contour of the gasket 201. This configuration can increase the amplitude of the vibration unit. When the coil drives the diaphragm 202 to vibrate, the deformation of the irregular bend 203 can provide a longer movement path for the coil.

[0090] like Figure 5 As shown, in some embodiments, a plurality of mounting blocks (not shown in the figure) can be further provided in the housing 30, which can be provided at the connection between the first diaphragm 212 and the second diaphragm 222 and the housing 30 to limit their setting position on the housing 30.

[0091] The mounting block may be an outwardly convex ear block or an inwardly concave groove structure, and the like, and no specific limitation is made here.

[0092] It should be understood that the speaker 1 can be applied to various fields such as earphone speakers, mobile phone receivers, mobile phone speakers, laptop speakers, etc., and is not specifically limited here.

[0093] It can be understood that the above technical features can be used in any combination without limitation.

[0094] The above embodiments only express the specific implementation methods of the present application. The descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present application. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present application, and several deformations and improvements can be made, which all fall within the scope of protection of the present application. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present application should fall within the scope of coverage of the claims of the present application.

Claims

1. A loudspeaker, characterized in that: include: A magnetic circuit system (10) comprises a first magnetic circuit unit (11), a second magnetic circuit unit (12) and a top magnet (13); the top magnet (13) is arranged between the first magnetic circuit unit (11) and the second magnetic circuit unit (12) along a first direction; the first magnetic circuit unit (11) comprises a first central magnet (111), a first side magnet (112) and a second side magnet (113), the first side magnet (112) and the second side magnet (113) being arranged on opposite sides of the first central magnet (111) along a second direction; the second magnetic circuit unit (12) comprises a second central magnet (121), a third side magnet (122) and a fourth side magnet (123), the third side magnet (122) and the fourth side magnet (123) being arranged on opposite sides of the second central magnet (121) along a second direction; the first direction and the second direction are perpendicular to each other; and A vibration system (20) comprises a first vibration unit (21) and a second vibration unit (22); the first vibration unit (21) is located between the top magnet (13) and the first magnetic circuit unit (11) in the first direction, and the second vibration unit (22) is located between the top magnet (13) and the second magnetic circuit unit (12) in the first direction; the first vibration unit (21) comprises a first vibration membrane (212) and a first coil (211) arranged on the first vibration membrane (212); the first coil (211) corresponds to the top magnet (13) and the first middle magnet (111) respectively; the second vibration unit (22) comprises a second vibration membrane (222) and a second coil (221) arranged on the second vibration membrane (222); the second coil (221) corresponds to the top magnet (13) and the second middle magnet (121) respectively; The orientation of the magnetic poles of the top magnet (13) in the first direction is opposite to the orientation of the magnetic poles of the first middle magnet (111) and the orientation of the magnetic poles of the second middle magnet (121), and is the same as the orientation of the magnetic poles of the first side magnet (112), the second side magnet (113), the third side magnet (122), and the fourth side magnet (123).

2. The loudspeaker according to claim 1, wherein The loudspeaker (1) further comprises a housing (30), wherein the housing (30) comprises a support plate (33) at least partially located within a cavity thereof, and the top magnet (13) is arranged on the support plate (33); the first vibration unit (21), the support plate (33), and the second vibration unit (22) sequentially separate the cavity within the housing (30) into a first rear cavity (35), a first front cavity (34), a second front cavity (36), and a second rear cavity (37) along the first direction.

3. The loudspeaker according to claim 2, characterized in that The first magnetic circuit unit (11) is located in the first rear cavity (35), and the second magnetic circuit unit (12) is located in the second rear cavity (37); the top magnet (13) is arranged on the support plate (33), and is partially located in the first front cavity (34) and partially located in the second front cavity (36).

4. The loudspeaker according to claim 2, characterized in that The housing (30) includes a first shell (31) and a second shell (32), wherein the first shell (31) and the second shell (32) together define the chamber, and the support plate (33) is sandwiched between the first shell (31) and the second shell (32).

5. The loudspeaker according to claim 2, characterized in that At least one through hole is provided on the support plate (33), and the through hole connects the first front cavity (34) and the second front cavity (36).

6. The loudspeaker according to claim 2, characterized in that The housing (30) is formed with at least one first sound outlet hole (311), a first air hole (312), a second sound outlet hole (321), and a second air hole (322); the first sound outlet hole (311) connects the first front cavity (34) with the outside world, and the first air hole (312) connects the first rear cavity (35) with the outside world; the second sound outlet hole (321) connects the second front cavity (36) with the outside world, and the second air hole (322) connects the second rear cavity (37) with the outside world.

7. The loudspeaker according to claim 6, characterized in that The first air hole (312) and / or the second air hole (322) are provided with a damping member for adjusting mid- and low-frequency.

8. The loudspeaker according to claim 6, wherein The first sound outlet hole (311) and the second sound outlet hole (321) are respectively arranged at the first end of the shell (30), the first air hole (312) and the second air hole (322) are respectively arranged at the second end of the shell (30), and the first end and the second end are arranged opposite to each other.

9. The loudspeaker according to claim 8, characterized in that The number of the first air holes (312) and the second air holes (322) are respectively two, and they are respectively arranged on two opposite sides of the second end of the shell (30).

10. The loudspeaker according to claim 1, wherein The first diaphragm (212) and the second diaphragm (222) respectively include a gasket (201), a diaphragm (202) and a special-shaped bend (203); the gasket (201) and the special-shaped bend (203) are both annular, and the special-shaped bend (203) is arranged between the gasket (201) and the diaphragm (202); the first coil (211) and the second coil (221) are respectively arranged on the diaphragm (202) corresponding to the first diaphragm (212) and the second diaphragm (222).

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