A speaker

Abstract

The present application provides a loudspeaker, including a basin frame, a vibration system and a magnetic circuit system for driving the vibration system to produce sound, the vibration system including a diaphragm and a voice coil, the diaphragm including an inner ring, an inner folding ring, a connecting part, an outer folding ring and an outer ring, the inner ring is arranged on the inner ring of the inner folding ring, the connecting part is used to connect the inner folding ring and the outer folding ring, the outer ring is arranged on the outer ring of the outer folding ring, the inner ring and the outer ring are fixedly connected to the basin frame, and the voice coil is connected to the connecting part; the magnetic circuit system includes a first magnet group and a second magnet group coaxially spaced, and the voice coil is at least partially located in the magnetic gap between the first magnet group and the second magnet group. The sound frequency generated by the loudspeaker provided by the present application can reach above 40KHz, which solves the problem that the sound frequency output by the existing loudspeaker begins to attenuate or even distort when it reaches 16KHz-20KHz, and improves the product performance of the loudspeaker.

Description

Technical Field

[0001] The present application relates to the field of electroacoustics, and in particular to a loudspeaker. Background Art

[0002] A loudspeaker is essentially a transducer device that can convert electrical energy into sound and is widely used in people's daily lives. The principle of sound generation is that a magnet generates a permanent magnetic field. When the coil is energized, an AC signal is input into the coil. According to the left-hand rule, the energized coil moves in the permanent magnetic field due to the magnetic field force, and the coil drives the sound membrane to vibrate, so that the density of the air changes and sounds are produced. However, common loudspeakers begin to attenuate or even distort when the output sound frequency reaches 16KHz-20KHz. For example, when playing music, music signals above 20KHz cannot be reflected. Summary of the invention

[0003] In view of this, the present application provides a speaker that solves the problem that the sound frequency output by the existing speaker begins to attenuate or even distort when it reaches 16KHz-20KHz.

[0004] In order to achieve the above-mentioned purpose, the present application proposes a loudspeaker, including a basin frame, a vibration system and a magnetic circuit system for driving the vibration system to make sound, the vibration system includes a diaphragm and a voice coil, the diaphragm includes an inner ring portion, an inner folding ring, a connecting portion, an outer folding ring and an outer ring portion, the inner ring portion is arranged on the inner ring of the inner folding ring, the connecting portion is used to connect the inner folding ring and the outer folding ring, the outer ring portion is arranged on the outer ring of the outer folding ring, the inner ring portion and the outer ring portion are fixedly connected to the basin frame, and the voice coil is connected to the connecting portion wherein the ratio of the width of the inner fold ring to the width of the outer fold ring is greater than or equal to 1.0 and less than or equal to 2.2, the ratio of the height of the inner fold ring to the height of the outer fold ring is greater than or equal to 0.8 and less than or equal to 2.5, the ratio of the width of the inner fold ring to the diameter of the diaphragm is greater than or equal to 12% and less than or equal to 18%, the ratio of the height of the inner fold ring to the diameter of the diaphragm is greater than or equal to 3% and less than or equal to 7.6%, and the width of the connecting portion is greater than 0 mm and less than or equal to 2 mm;

[0005] The magnetic circuit system comprises a first magnet group and a second magnet group which are coaxially spaced apart from each other, and the voice coil is at least partially located in a magnetic gap between the first magnet group and the second magnet group.

[0006] The present application proposes a loudspeaker, in which the inner ring and the outer ring of the diaphragm are fixedly connected to the basin frame, the connecting part connects the outer folding ring and the inner folding ring, and the voice coil is connected to the connecting part. When the voice coil is energized, the voice coil drives the inner folding ring and the outer folding ring to vibrate through the connecting part, wherein the inner folding ring mainly plays the role of vibrating and sounding, the outer folding ring provides amplitude and support for the vibration of the inner folding ring, and the connecting part plays the role of connecting the inner folding ring and the outer folding ring. Therefore, the effective vibration part of the diaphragm designed by the present application is light in weight and convex in shape, so that the sound frequency produced by the loudspeaker can reach above 40KHz, improving the product performance of the loudspeaker.

[0007] Optionally, the inner ring portion is a hollow structure.

[0008] Optionally, the diaphragm, the basin frame and the magnetic circuit system are coaxial hollow structures.

[0009] The above-mentioned diaphragm, basin frame and magnetic circuit system are all designed to be a hollow structure corresponding to the inner circle of the diaphragm. Such a design will not reduce the low-frequency effect output by the speaker composed of the above-mentioned components.

[0010] Optionally, the ratio of the width of the inner fold to the width of the outer fold is greater than or equal to 1.1 and less than or equal to 1.7, the ratio of the height of the inner fold to the height of the outer fold is greater than or equal to 0.8 and less than or equal to 2, the ratio of the width of the inner fold to the diameter of the diaphragm is greater than or equal to 14.1% and less than or equal to 16.3%, the ratio of the height of the inner fold to the diameter of the diaphragm is greater than or equal to 4.3% and less than or equal to 6.6%, and the width of the connecting portion is greater than 0 and less than or equal to 0.5 mm. In this case, the sound frequency generated by the speaker can reach 50KHz.

[0011] Optionally, the thickness of the diaphragm is 15-25um, and the diaphragm is integrally formed. Diaphragms of different thicknesses result in different hardness and weight of the diaphragms. Diaphragms of different hardness and weight will directly affect the stiffness of the diaphragm and the amplitude of the diaphragm vibration during sound generation, thereby affecting the high-frequency and low-frequency performance of the speaker. When the thickness of the diaphragm is within the range of 15-25um, the frequency of the sound measured according to actual applications can reach 50KHz, and the resonant frequency of the speaker is 350Hz-450Hz, which can meet the output requirements of both high-frequency and low-frequency sounds.

[0012] Designing the diaphragm as an integrated structure facilitates manufacturing and assembly.

[0013] Optionally, the inner fold and the outer fold are respectively provided with a plurality of grooves inclined in the same direction. The inclined groove design on the outer fold and the inner fold of the diaphragm can make the grooves longer, thereby improving the rigidity of the diaphragm and making the vibration of the diaphragm more stable.

[0014] Optionally, the first magnet group and the second magnet group are respectively annular, the first magnet group includes a first upper magnet, a first middle magnet, and a first lower magnet stacked in sequence from top to bottom; the second magnet group includes a second upper magnet, a second middle magnet, and a second lower magnet stacked in sequence from top to bottom; the first upper magnet, the first lower magnet, the second upper magnet and the second lower magnet are all axial magnets, and the first middle layer magnet and the second middle layer magnet are both radial magnets.

[0015] The traditional magnetic circuit system adopts a structure in which the upper and lower layers are magnetic conductors and the middle layer is a magnet. In the magnetic circuit system provided by the present application, the first magnet group and the second magnet group are coaxially spaced, and the first magnet group and the second magnet group are stacked with upper, middle and lower magnets. Compared with the traditional magnetic circuit system, according to actual measurements, the magnetic circuit system of the present application can provide a greater magnetic field strength. In addition, in the magnetic circuit system, both magnet groups adopt a design of two axial magnets sandwiching a radial magnet, which can further increase the strength of the magnetic field.

[0016] Optionally, the first upper magnet includes at least two first magnetic tiles, the first middle magnet includes at least two second magnetic tiles, and the first lower magnet includes at least two third magnetic tiles;

[0017] The second upper magnet includes at least two fourth magnetic tiles, the second middle magnet includes at least two fifth magnetic tiles, and the second lower magnet includes at least two sixth magnetic tiles;

[0018] The first magnetic tile is arranged opposite to the fourth magnetic tile, the second magnetic tile is arranged opposite to the fifth magnetic tile, and the third magnetic tile is arranged opposite to the sixth magnetic tile;

[0019] The magnetic poles of the two sides of the second magnetic tile and the fifth magnetic tile close to each other are different, the magnetic poles of the two sides of the first magnetic tile and the third magnetic tile close to the second magnetic tile are the same, and the magnetic poles of the two sides of the fourth magnetic tile and the sixth magnetic tile close to the fifth magnetic tile are the same;

[0020] The magnetic pole of the side of the first magnetic tile close to the second magnetic tile is different from the magnetic pole of the side of the fourth magnetic tile close to the fifth magnetic tile.

[0021] In the present application, the first middle layer magnet and the second middle layer magnet are radial magnets, and each radial magnet includes at least two magnetic tiles. During the magnetization process, the radial magnets are more likely to reach magnetic saturation and are not easy to break. The first upper layer magnet, the first lower layer magnet, the second upper layer magnet and the second lower layer magnet are axial magnets, and each axial magnet includes at least two magnetic tiles. Not only can the axial magnets be prevented from breaking during the magnetization process, but the upper layer magnets and the lower layer magnets are designed to have a magnetic tile structure that corresponds one to one with the middle layer magnets, which is more conducive to the assembly of the entire magnetic circuit system.

[0022] During the manufacturing process of the magnetic circuit system provided in the present application, the axial magnets and radial magnets are designed into a magnetic tile structure, which can facilitate the use of a magnetizing head for the axial magnet to magnetize the radial magnet, avoiding the use of a magnetizing head of a specific size to magnetize the above-mentioned radial magnet, thereby reducing the manufacturing cost of the magnetic circuit system in this process and improving the efficiency of manufacturing the magnetic circuit system.

[0023] Optionally, a protruding support seat is provided at the bottom of the basin frame in a direction close to the diaphragm, and the support seat, the bottom and the side wall of the basin frame form a receiving cavity for accommodating the magnetic circuit system, the diaphragm, the voice coil and a voice coil lead connected to the voice coil;

[0024] A partition corresponding to the at least two first magnetic tiles is arranged between the support seat and the side wall, and a gap for accommodating the voice coil is arranged on the partition;

[0025] The inner ring portion is fixed on the support seat, and the outer ring portion is fixed on the side wall.

[0026] Optionally, the speaker further includes a first copper ring and a second copper ring, the inner ring portion is fixed to the support seat via the first copper ring, and the outer ring portion is fixed to the side wall via the second copper ring.

[0027] The beneficial effects of a speaker provided in the present application can be referred to the beneficial effects brought about by the above-mentioned possible implementation modes, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of an exploded structure of a speaker provided in one embodiment of the present application;

[0029] Figure 2 A schematic diagram of the structure of a diaphragm in a loudspeaker is provided for one embodiment of the present application;

[0030] Figure 3 A schematic cross-sectional structure diagram of a speaker provided in one embodiment of the present application;

[0031] Figure 4 One of the schematic diagrams of the diaphragm size provided in the embodiment of the present application;

[0032] Figure 5 The second schematic diagram of the diaphragm size provided in the embodiment of the present application;

[0033] Figure 6 for Figure 5 A partial enlarged schematic diagram of the middle area A;

[0034] Figure 7 A schematic diagram of the specific structure of two magnet groups in a magnetic circuit system provided in one embodiment of the present application;

[0035] Figure 8 A schematic diagram of the magnetic pole distribution of two magnet rings in a magnetic circuit system provided in one embodiment of the present application;

[0036] Fig. 9 A schematic diagram of the direction of the magnetic field formed by two magnet rings in a magnetic circuit system provided in one embodiment of the present application;

[0037] Fig.10 A schematic diagram of a magnetic field formed by two magnet rings in a simulated magnetic circuit system provided in an embodiment of the present application;

[0038] Fig.11 A schematic diagram of the structure of a basin frame in a speaker provided in an embodiment of the present application.

[0039] Description of reference numerals:

[0040] 1-diaphragm; 11-outer ring;

[0041] 12-outer folding ring; 13-connecting part;

[0042] 14-inner folding ring; 15-inner ring portion;

[0043] 16-grooves; 2-voice coils;

[0044] 21-voice coil lead; 3-first magnet group;

[0045] 31-first magnetic tile; 32-second magnetic tile;

[0046] 33-third magnetic tile; 4-second magnet group;

[0047] 41- fourth magnetic tile; 42- fifth magnetic tile;

[0048] 43-sixth magnetic tile; 51-first tuning net;

[0049] 52- second tuning net; 61- first copper ring;

[0050] 62-second copper ring; 7-basin stand;

[0051] 71- partition; 72- support seat;

[0052] 73-a first annular support frame; 74-a second annular support frame;

[0053] 75-first vent hole; 76-second vent hole;

[0054] 8-Hollow structure. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0056] A speaker is essentially a transducer device that can convert electrical energy into sound. It is widely used in people's daily lives. Its sound-generating principle is that a magnet generates a permanent magnetic field. When the coil is energized, an AC signal is input into the coil. According to the left-hand rule, the energized coil moves in the permanent magnetic field due to the magnetic force. The coil drives the sound membrane to vibrate, causing the density of the air to change and produce sound. However, common speakers begin to attenuate or even distort when the output sound frequency reaches 16KHz-20KHz. For example, when playing music, music signals above 20KHz cannot be heard.

[0057] Therefore, it is necessary to provide a speaker that can solve the problem that the sound frequency output by the speaker begins to attenuate or even distort when it reaches 16KHz-20KHz.

[0058] In order to solve the above problems, the present application provides a loudspeaker, wherein the inner ring and the outer ring of the diaphragm are fixedly connected to the basin frame, the connecting part connects the outer folding ring and the inner folding ring, and the voice coil is connected to the connecting part. When the voice coil is energized, the voice coil drives the inner folding ring and the outer folding ring to vibrate through the connecting part, wherein the inner folding ring mainly plays the role of vibrating and sounding, and the outer folding ring provides amplitude and support for the vibration of the inner folding ring. Therefore, the effective vibration part of the diaphragm designed by the present application is light in weight and convex in shape, so that the sound frequency output by the loudspeaker can reach above 40KHz, thereby improving the product performance of the loudspeaker.

[0059] The technical solution of the present application is described in detail below in conjunction with the accompanying drawings.

[0060] like Figure 1As shown, an embodiment of the present application provides a loudspeaker, which includes: a diaphragm 1, a basin frame 7, a voice coil 2 and a magnetic circuit system, wherein the magnetic circuit system includes a first magnet group 3 and a second magnet group 4 coaxially spaced apart, and the voice coil 2 is at least partially located in a magnetic gap between the first magnet group 3 and the second magnet group 4.

[0061] like Figure 2 The figure shows a detailed structural diagram of the diaphragm 1, which includes an inner ring portion 15, an inner fold ring 14, a connecting portion 13, an outer fold ring 12 and an outer ring portion 11 which are connected in sequence from the inside to the outside (referring to the position from the center of the circle to the arc), the inner ring portion 15 is arranged on the inner ring of the inner fold ring 14, the connecting portion 13 connects the outer ring of the inner fold ring 14 and the inner ring of the outer fold ring 12, the outer ring portion 11 is arranged on the outer ring of the outer fold ring 12, the inner ring portion 15 and the outer ring portion 11 are both fixed on the basin frame 7, and the voice coil 2 is connected to the connecting portion 13. Among them, the ratio between the width of the inner fold ring 14 and the width of the outer fold ring 12 is greater than or equal to 1.0 and less than or equal to 2.2, the ratio between the height of the inner fold ring 14 and the height of the outer fold ring 12 is greater than or equal to 0.8 and less than or equal to 2.5, the ratio between the width of the inner fold ring 14 and the diameter of the diaphragm 1 is greater than or equal to 12% and less than or equal to 18%, the ratio between the height of the inner fold ring 14 and the diameter of the diaphragm 1 is greater than or equal to 3% and less than or equal to 7.6%, and the width of the connecting portion 13 is greater than 0mm and less than or equal to 2mm. The sound frequency generated by the speaker of the above structure can reach above 40KHz. It should be noted that in order to avoid the excessive width of the connecting portion 13 affecting the high-frequency effect of the sound generated by the vibration of the speaker, when the width of the connecting portion 13 is greater than 0mm and less than or equal to 2mm, the connecting portion 13 will not affect the sound effect of the high-frequency sound output by the speaker.

[0062] Optionally, the ratio between the width of the inner fold 14 and the width of the outer fold 12 is greater than or equal to 1.1 and less than or equal to 1.7, the ratio between the height of the inner fold 14 and the height of the outer fold 12 is greater than or equal to 0.8 and less than or equal to 2, the ratio between the width of the inner fold 14 and the diameter of the diaphragm 1 is greater than or equal to 14.1% and less than or equal to 16.3%, the ratio between the height of the inner fold 14 and the diameter of the diaphragm 1 is greater than or equal to 4.3% and less than or equal to 6.6%, and the width of the connecting portion 13 is greater than 0 and less than or equal to 0.5 mm. In this case, the sound frequency generated by the speaker can reach 50KHz.

[0063] For example, the diameter of the diaphragm 1 is 46 mm, the width of the inner fold 14 is 6.5 mm-7.5 mm, the width of the outer fold 12 is 4.5 mm-5.5 mm, the height of the inner fold 14 is 2.0 mm-3.0 mm, the height of the outer fold 12 is 1.0-2.5 mm, the width of the connecting portion 13 is 0-0.5 mm, and the thickness of the diaphragm 1 is 15 μm-25 μm. For another example, when the diameter of the diaphragm 1 is 46 mm, the width of the inner fold 14 is 7 mm, the width of the outer fold 12 is 5 mm, the height of the inner fold 14 is 2.5 mm, the height of the outer fold 12 is 2 mm, and the width of the connecting portion 13 is 0.5 mm.

[0064] See also Figure 4 The diameter of the middle diaphragm 1 is a; the width b of the inner fold 14, the width c of the outer fold 12 and the width d of the connecting portion 13 all refer to the difference between the inner radius and the outer radius of the corresponding inner fold 14, the outer fold 12 and the connecting portion 13; see Figure 5 The height e of the inner fold 14 refers to the straight-line distance between the highest point of the protrusion on the outer surface of the inner fold 14 and the plane where the voice coil 2 and the diaphragm 1 are bonded, and the height f of the outer fold 12 refers to the straight-line distance between the highest point of the protrusion on the outer surface of the outer fold 12 and the plane where the voice coil 2 and the diaphragm 1 are bonded. Figure 6 for Figure 5 The schematic diagram of the enlarged area A in FIG. 1 is a schematic diagram of the enlarged area A in FIG. 1 , wherein g represents the horizontal plane corresponding to the highest point of the protrusion on the surface of the outer fold ring 12, and h represents the horizontal plane corresponding to the highest point of the protrusion on the surface of the inner fold ring 14. Figure 3 The inner fold ring 14 and the outer fold ring 12 are shown as arc-shaped structures protruding in the direction away from the voice coil 2 (i.e., the side of the diaphragm 1 that can be clearly seen), and a plurality of grooves 16 inclined in the same direction are distributed on the protruding annular surfaces of the inner fold ring 14 and the outer fold ring 12.

[0065] It is understandable that the groove 16 can be a concave structure or a convex structure; and the length, width, interval, slope, style and concave-convex structure of the groove 16 can be flexibly adjusted according to actual needs, and the present application does not impose any limitation on this.

[0066] Compared with the vertical groove 16 pointing directly to the center of the circle, the inclined groove 16 design can make the length of the groove 16 longer, thereby improving the rigidity of the diaphragm 1, making the vibration of the diaphragm 1 more stable, further reducing the occurrence of sound distortion of the speaker, and improving the product performance of the speaker.

[0067] Alternatively, if Figure 1 , Figure 2 As shown, the diaphragm 1 is annular, and a hollow structure 8 (i.e., a hollow structure) is present in the middle portion of the inner ring portion 15 of the diaphragm 1, that is, the inner ring portion 15 is a hollow annular structure; see Figure 1 and Figure 3 , the middle part of the first magnet group 3 and the second magnet group 4 corresponding to the diaphragm 1 also presents a hollow structure 8, that is, the first magnet group 3 and the second magnet group 4 are both hollow annular structures; the middle position of the basin frame 7 corresponding to the inner ring part 15 of the diaphragm 1 also presents a hollow structure 8. If the diaphragm 1, the magnetic circuit system or the hollow structure 8 of the basin frame 7 is designed to be solid, or there are obstructions in the hollow structure 8 in the middle of the diaphragm 1, the magnetic circuit system or the basin frame 7, then in actual application tests, the low-frequency frequency response curve will drop by 0.5-1 decibels. Therefore, the hollow structure design provided in this application can avoid the situation where the low-frequency frequency response drops due to the solid design, and can also save the cost of making the speaker and reduce the weight of the product.

[0068] It should be noted that, in the loudspeaker provided in the embodiment of the present application, the hollow structure 8 is a circular structure as a whole.

[0069] Optionally, the thickness of the diaphragm is 15-25um. Diaphragms of different thicknesses result in different hardness and weight of the diaphragms. Diaphragms of different hardness and weight will directly affect the stiffness of the diaphragm and the amplitude of the diaphragm vibration during sound generation, thereby affecting the high-frequency and low-frequency performance of the speaker. When the thickness of the diaphragm is within the range of 15-25um, the sound frequency can reach 50KHz and the resonant frequency is 350Hz-450Hz according to actual application measurements, and can simultaneously meet the output requirements of high-frequency and low-frequency sounds.

[0070] Optionally, the diaphragm 1 is a composite of polyetheretherketone and polyurethane, and is an integrally formed structure. Designing the diaphragm 1 as an integrally formed structure can make the thickness of the diaphragm uniform, so that the diaphragm will be evenly stressed when vibrating and will not easily break. The uniform stress on the diaphragm will make the vibration force uniform at all parts of the diaphragm, thereby achieving a better sound effect; at the same time, designing the diaphragm 1 as an integrally formed structure is convenient for production and assembly. Since the composite of polyetheretherketone and polyurethane has the characteristics of high temperature resistance and high elasticity, using the above-mentioned composite of polyetheretherketone and polyurethane to make the diaphragm 1 can effectively extend the service life of the diaphragm 1.

[0071] like Figure 1 As shown, the voice coil 2 is fixedly connected to the connecting portion 13 of the diaphragm 1 by means of glue (eg, glue or double-sided tape, etc.), and a voice coil lead 21 is provided on the voice coil 2, and the voice coil lead 21 is used to connect to an external power source to energize the voice coil 2.

[0072] It should be understood that the fixed connection may be achieved by bonding with glue, or by connecting the diaphragm 1 and the basin frame 7 or the diaphragm 1 and the voice coil 2 by other methods other than bonding. The present application does not impose any limitation on the above-mentioned connection methods.

[0073] like Figure 1The magnetic circuit system shown includes a first magnet group 3 and a second magnet group 4 which are coaxially spaced apart. It should be understood that the first magnet group 3 refers to Figure 3 The inner ring of the magnetic circuit system shown in the figure, the second magnet group 4 refers to Figure 3 In the magnetic circuit system shown, the gap between the outer magnet ring, the first magnet group 3 and the second magnet group 4 forms a magnetic gap, and the voice coil 2 is at least partially located in the above magnetic gap.

[0074] The first magnet group 3 includes a first upper magnet, a first middle magnet, and a first lower magnet stacked in sequence from top to bottom; the second magnet group 4 includes a second upper magnet, a second middle magnet, and a second lower magnet stacked in sequence from top to bottom.

[0075] The first upper magnet, the first lower magnet, the second upper magnet and the second lower magnet are all axial magnets, and the first middle magnet and the second middle magnet are all radial magnets.

[0076] Optionally, the first upper magnet, the first middle magnet, the first lower magnet, the second upper magnet, the second middle magnet, and the second lower magnet are all annular magnets.

[0077] The traditional magnetic circuit system adopts a structure in which the upper and lower layers are magnetic conductors and the middle layer is a magnet. In the magnetic circuit system provided by the present application, the first magnet group and the second magnet group are coaxially spaced, and the first magnet group and the second magnet group adopt a structure in which the upper layer, middle layer and lower layer are all magnets. Compared with the traditional magnetic circuit system, according to actual measurements, the magnetic circuit system of the present application can provide a greater magnetic field strength. In addition, in the magnetic circuit system, both magnet groups adopt a design of two layers of axial magnets sandwiching a layer of radial magnets, which can further increase the strength of the magnetic field.

[0078] Optionally, the first middle layer magnet includes at least two second magnetic tiles 32, and the second middle layer magnet includes at least two fifth magnetic tiles 42; the corresponding first upper layer magnet includes at least two first magnetic tiles 31, and the first lower layer magnet includes at least two third magnetic tiles 33; the second upper layer magnet includes at least two fourth magnetic tiles 41, and the second lower layer magnet includes at least two sixth magnetic tiles 43. The first magnetic tile 31 is arranged opposite to the fourth magnetic tile 41, the second magnetic tile 32 is arranged opposite to the fifth magnetic tile 42, and the third magnetic tile 33 is arranged opposite to the sixth magnetic tile 43.

[0079] In the present application, the first middle layer magnet and the second middle layer magnet are radial magnets, and each radial magnet includes at least two magnetic tiles. During the magnetization process, the radial magnets are more likely to reach magnetic saturation and are not easy to break. The first upper layer magnet, the first lower layer magnet, the second upper layer magnet and the second lower layer magnet are axial magnets, and each axial magnet includes at least two magnetic tiles. Not only can the axial magnets be prevented from breaking during the magnetization process, but the upper layer magnets and the lower layer magnets are designed to have a magnetic tile structure that corresponds one to one with the middle layer magnets, which is more conducive to the assembly of the entire magnetic circuit system.

[0080] Specifically, the magnetic poles of the two sides of the second magnetic tile 32 and the fifth magnetic tile 42 close to each other are different, the magnetic poles of the two sides of the first magnetic tile 31 and the third magnetic tile 33 close to the second magnetic tile 32 are the same, and the magnetic poles of the two sides of the fourth magnetic tile 41 and the sixth magnetic tile 43 close to the fifth magnetic tile 42 are the same; the magnetic pole of the side of the first magnetic tile 31 close to the second magnetic tile 32 is different from the magnetic pole of the side of the fourth magnetic tile 41 close to the fifth magnetic tile 42.

[0081] In the corresponding upper, middle and lower magnets in the first magnet group 3 and the second magnet group 4, the shape and quantity of each magnetic tile correspond one to one. It should be understood that the corresponding upper, middle and lower magnets in the first magnet group 3 and the second magnet group 4 may include 2, 4, 5 or 6 magnetic tiles. The number of magnetic tiles can be designed according to actual needs, and the present application does not impose any limitation on this.

[0082] As shown in FIG3 , in the actual manufacturing process, the first upper magnet and the first middle layer magnet are bonded with glue, the first middle layer magnet and the first lower layer magnet are also bonded with glue, and then the first lower layer magnet is bonded to the bottom of the basin frame 7; similarly, the second upper magnet and the second middle layer magnet are bonded with glue, the second middle layer magnet and the second lower layer magnet are also bonded with glue, and then the second lower layer magnet is bonded to the bottom of the basin frame 7.

[0083] For example, Figure 7 As shown, the first upper magnet includes three first magnetic tiles 31, the first middle magnet includes three second magnetic tiles 32, and the first lower magnet includes three third magnetic tiles 33; the second upper magnet includes three fourth magnetic tiles 41, the second middle magnet includes three fifth magnetic tiles 42; and the second lower magnet includes three sixth magnetic tiles 43.

[0084] Among them, see Figure 7-8 The magnetic poles on the sides of the first magnetic tile 31 and the third magnetic tile 33 that are close to each other are both N poles; the magnetic poles on the sides of the fourth magnetic tile 41 and the sixth magnetic tile 43 that are close to each other are both S poles. The magnetic pole on the side of the second magnetic tile 32 that is close to the voice coil 2 is an N pole, and the magnetic pole on the side of the fifth magnetic tile 42 that is close to the voice coil 2 is an S pole.

[0085] The direction of the magnetic field formed by the first magnet group 3 and the second magnet group 4 is as follows: Fig. 9 As shown. Fig.10 It is a schematic diagram of the simulated magnetic lines of force formed by the first magnet group 3 and the second magnet group 4. It can be seen that a relatively stable magnetic field is formed by the first magnet group 3 and the second magnet group 4.

[0086] In the above magnetic circuit system, if Figure 3 As shown, the voice coil 2 is located in the magnetic gap between the first magnet group 3 and the second magnet group 4. It is easy to understand that the depth of the voice coil 2 in the magnetic gap can be adjusted and designed according to actual needs, and this application does not impose any limitation on this.

[0087] In combination with actual application scenarios, the first magnet group 3 and the second magnet group 4 coaxially spaced apart form a permanent magnetic field. When the voice coil 2 located in the magnetic gap between the first magnet group 3 and the second magnet group 4 is energized, the voice coil 2 will move in the permanent magnetic field due to the magnetic field force. The voice coil 2 drives the diaphragm 1 to vibrate, and the vibration of the diaphragm 1 will affect the change in the surrounding air density to form sound.

[0088] Optionally, the first magnet group 3 and the second magnet group 4 are in a circular ring structure.

[0089] See also Fig.11 As shown, a raised support seat 72 is provided at the bottom of the basin frame 7 in the direction close to the diaphragm 1, and the support seat 72, the bottom of the basin frame 7 and the side wall of the basin frame 7 form a receiving cavity for accommodating the magnetic circuit system, the diaphragm, the voice coil and the voice coil lead connected to the voice coil; a partition plate 71 corresponding to at least two first magnetic tiles 31 is provided between the support seat 72 and the side wall, and a gap is provided on the partition plate 71 for accommodating the voice coil 2.

[0090] It should be noted that, since the shapes and numbers of the magnetic tiles in the corresponding upper, middle and lower layers of the first magnet group 3 and the second magnet group 4 correspond one to one, the partition 71 provided between the support seat 72 and the side wall also corresponds to the at least two second magnetic tiles 32 and the at least two third magnetic tiles 33. The partition 71 is used to separate the at least two first magnetic tiles 31 included in the first upper magnet, the at least two second magnetic tiles 32 included in the first middle layer magnet, and the at least two third magnetic tiles 33 included in the first lower layer magnet; similarly, the partition 71 is also used to separate the at least two fourth magnetic tiles 41 included in the second upper magnet, the at least two fifth magnetic tiles 42 included in the second middle layer magnet, and the at least two sixth magnetic tiles 43 included in the second lower layer magnet.

[0091] It is easy to understand that the number of partitions 71 corresponds to the number of magnetic tiles in each layer of the upper, middle and lower magnets in the first magnet group 3 and the second magnet group 4 .

[0092] For example, if in the magnetic circuit system of the loudspeaker, the first upper magnet, the first middle magnet and the first lower magnet all include three corresponding magnetic tiles, and the second upper magnet, the second middle magnet and the second lower magnet also all include three corresponding magnetic tiles, then the number of corresponding partitions 71 in the accommodating cavity in the basin frame 7 is three; similarly, in the magnetic circuit system of the loudspeaker, the first upper magnet, the first middle magnet and the first lower magnet all include four corresponding magnetic tiles, and the second upper magnet, the second middle magnet and the second lower magnet also all include four corresponding magnetic tiles, then the number of corresponding partitions 71 in the accommodating cavity in the basin frame 7 is four.

[0093] Since the voice coil 2 itself has a certain width (from the position connected to the connecting portion 13 to the part deep into the partition 71), the voice coil 2 can be completely located in the magnetic gap between the first magnet group 3 and the second magnet group 4, and the voice coil 2 can also be partially located in the magnetic gap between the first magnet group 3 and the second magnet group 4, so the depth of the gap set on the partition 71 corresponds to the depth of the voice coil 2 located in the magnetic gap. Of course, the gap set on the partition 71 may not completely divide the partition 71 into two parts. For example, the depth of the gap can be sufficient to allow the energized voice coil 2 to move under the magnetic field force in the permanent magnetic field. Therefore, the depth of the gap and the placement position of the voice coil 2 can be designed according to actual needs, and this application does not impose any restrictions on this.

[0094] Optionally, a first annular support frame 73 and a first vent hole 75 are provided on the support seat 72, and a second annular support frame 74 and a second vent hole 76 are provided on the side wall of the basin frame 7. In consideration of the aesthetics and ventilation of the speaker, the density of the first vent hole 75 (referring to the gap between each vent hole) is designed to correspond to the density of the second vent hole 76. It is not difficult to understand that the shape, structure, size and number of the first vent hole 75 and the second vent hole 76 can be designed according to actual needs, and the present application does not impose any limitation on this.

[0095] Alternatively, see Figure 1 The speaker further includes a first copper ring 61 and a second copper ring 62 . The inner ring 15 is fixed to the support seat 72 via the first copper ring 61 , and the outer ring 11 is fixed to the side wall of the basin frame 7 via the second copper ring 62 .

[0096] Furthermore, the inner ring 15 and the first copper ring 61 can be bonded with glue (e.g., spray glue), and similarly, the outer ring 11 and the second copper ring 62 can also be bonded with glue (e.g., spray glue). The first copper ring 61 and the second copper ring 62 are respectively bonded to the basin frame 7 with glue, which makes it easy to take the diaphragm 1. Moreover, since the spray glue is thin and the diaphragm 1 is indirectly fixed to the basin frame 7 with the copper ring, it can also avoid that when the diaphragm 1 and the basin frame 7 are directly bonded with glue, the glue sticks to the diaphragm 1 and affects the sound quality of the speaker.

[0097] It is not difficult to understand that the inner ring portion 15 connected to the first copper ring 61 is connected to the first annular support frame 73 in the support seat 72, and the outer ring portion 11 connected to the second copper ring 62 is connected to the second annular support frame 74 in the basin frame 7.

[0098] Alternatively, if Figure 1 The speaker shown also includes a first tuning net 51 and a second tuning net 52, wherein the first tuning net 51 is bonded to the first vent 75, and the second tuning net 52 is bonded to the second vent 76. The low-frequency sound can be better adjusted by the matching design of the first tuning net 51 and the first vent 75, and the second tuning net 52 and the second vent 76. Such a design allows the air inside and outside the speaker to circulate with each other, and can play a role in ventilation and heat dissipation for the voice coil lead 21 in operation, thereby improving the speaker's withstand power and extending the speaker's service life.

[0099] It should be noted that the first tuning mesh 51 and the second tuning mesh 52 are both annular devices in the speaker. However, in order to reasonably arrange the voice coil 2 and the voice coil lead 21 in the speaker, a notch is provided on the annular structure of the second tuning mesh 52 to install the voice coil 2 provided with the voice coil lead 21.

[0100] Optionally, the vibration assembly further includes a centering support plate, which is arranged between the voice coil 2 and the diaphragm 1 to make the vibration of the diaphragm 1 more uniform.

[0101] In a loudspeaker provided in the present application, two coaxially spaced magnet groups form a permanent magnetic field. When the voice coil 2 is energized, the voice coil 2 located in the magnetic gap formed by the two magnet groups will move in the permanent magnetic field due to the magnetic field force. The voice coil 2 drives the diaphragm 1 to vibrate, and the vibration of the diaphragm 1 will affect the change in the density of the surrounding air to form sound.

[0102] In summary, through the speaker of the present application, the effective vibrating part of the diaphragm 1 can be made light and convex, so that the sound frequency output by the speaker can reach above 40KHz, and the resonant frequency output by the speaker can reach 350Hz-450Hz, while meeting the output requirements of high-frequency sound and low-frequency sound, thereby improving the product performance of the speaker.

[0103] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0104] It should be understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. As used in the present specification and the appended claims, the term "if" can be interpreted as "when..." or "once" or "if" or "under..." depending on the context. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0105] In addition, in the description of the present application, it should be understood that the terms "longitudinal", "horizontal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0106] In addition, in the present application, unless otherwise clearly stipulated and limited, the terms "connection", "connected", etc. should be understood in a broad sense. For example, it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. It can be the internal connection of two components or the interaction relationship between two components. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in this application according to the specific circumstances.

[0107] Finally, it should be noted that the above embodiments and drawings are only used to illustrate the technical solution of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A speaker, comprising a basin frame, a vibration system and a magnetic circuit system for driving the vibration system to produce sound, characterized in that: The vibration system includes a diaphragm and a voice coil, the diaphragm includes an inner ring portion, an inner folding ring, a connecting portion, an outer folding ring and an outer ring portion, the inner ring portion is arranged on the inner ring of the inner folding ring, the connecting portion is used to connect the inner folding ring and the outer folding ring, the outer ring portion is arranged on the outer ring of the outer folding ring, the inner ring portion and the outer ring portion are fixedly connected to the basin frame, and the voice coil is connected to the connecting portion, wherein the ratio between the width of the inner folding ring and the width of the outer folding ring is greater than or equal to 1.0 and less than or equal to 2.2, the ratio between the height of the inner folding ring and the height of the outer folding ring is greater than or equal to 0.8 and less than or equal to 2.5, the ratio between the width of the inner folding ring and the diameter of the diaphragm is greater than or equal to 12% and less than or equal to 18%, the ratio between the height of the inner folding ring and the diameter of the diaphragm is greater than or equal to 3% and less than or equal to 7.6%, and the width of the connecting portion is greater than 0 mm and less than or equal to 2 mm; The magnetic circuit system is bonded to the basin frame, and comprises a first magnet group and a second magnet group coaxially arranged at intervals, and the voice coil is at least partially located in a magnetic gap between the first magnet group and the second magnet group.

2. The loudspeaker according to claim 1, characterized in that The inner ring portion is a hollow structure.

3. The loudspeaker according to claim 1, characterized in that The diaphragm, the basin frame and the magnetic circuit system are coaxial hollow structures.

4. The loudspeaker according to claim 1, characterized in that The ratio of the width of the inner fold ring to the width of the outer fold ring is greater than or equal to 1.1 and less than or equal to 1.7, the ratio of the height of the inner fold ring to the height of the outer fold ring is greater than or equal to 0.8 and less than or equal to 2, the ratio of the width of the inner fold ring to the diameter of the diaphragm is greater than or equal to 14.1% and less than or equal to 16.3%, the ratio of the height of the inner fold ring to the diameter of the diaphragm is greater than or equal to 4.3% and less than or equal to 6.6%, and the width of the connecting portion is greater than 0 mm and less than or equal to 0.5 mm.

5. The loudspeaker according to claim 1, characterized in that The thickness of the diaphragm is 15-25um, and the diaphragm is integrally formed.

6. The loudspeaker according to claim 1, characterized in that The inner fold ring and the outer fold ring are respectively provided with a plurality of grooves inclined in the same direction.

7. The loudspeaker according to any one of claims 1 to 6, characterized in that: The first magnet group and the second magnet group are respectively annular, and the first magnet group includes a first upper magnet, a first middle magnet, and a first lower magnet stacked in sequence from top to bottom; The second magnet group includes a second upper magnet layer, a second middle magnet layer, and a second lower magnet layer stacked in sequence from top to bottom; The first upper magnet, the first lower magnet, the second upper magnet and the second lower magnet are all axial magnets, and the first middle magnet and the second middle magnet are all radial magnets.

8. The loudspeaker according to claim 7, characterized in that The first upper magnet includes at least two first magnetic tiles, the first middle magnet includes at least two second magnetic tiles, and the first lower magnet includes at least two third magnetic tiles; The second upper magnet includes at least two fourth magnetic tiles, the second middle magnet includes at least two fifth magnetic tiles, and the second lower magnet includes at least two sixth magnetic tiles; The first magnetic tile is arranged opposite to the fourth magnetic tile, the second magnetic tile is arranged opposite to the fifth magnetic tile, and the third magnetic tile is arranged opposite to the sixth magnetic tile; The magnetic poles of the two sides of the second magnetic tile and the fifth magnetic tile close to each other are different, the magnetic poles of the two sides of the first magnetic tile and the third magnetic tile close to the second magnetic tile are the same, and the magnetic poles of the two sides of the fourth magnetic tile and the sixth magnetic tile close to the fifth magnetic tile are the same; The magnetic pole of the side of the first magnetic tile close to the second magnetic tile is different from the magnetic pole of the side of the fourth magnetic tile close to the fifth magnetic tile.

9. The loudspeaker according to claim 8, characterized in that A protruding support seat is provided at the bottom of the basin frame in a direction close to the diaphragm, and the support seat, the bottom and the side wall of the basin frame form a receiving cavity for accommodating the magnetic circuit system, the diaphragm, the voice coil and the voice coil lead connected to the voice coil; A partition corresponding to the at least two first magnetic tiles is arranged between the support seat and the side wall, and a gap for accommodating the voice coil is arranged on the partition; The inner ring portion is fixed on the support seat, and the outer ring portion is fixed on the side wall.

10. The loudspeaker according to claim 9, characterized in that The speaker further comprises a first copper ring and a second copper ring, the inner ring portion is fixed to the support seat via the first copper ring, and the outer ring portion is fixed to the side wall via the second copper ring.

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