Loudspeaker assembly and loudspeaker equipment

Abstract

The embodiment of the utility model provides a loudspeaker assembly and loudspeaker equipment, and the loudspeaker assembly comprises two first magnet groups which are oppositely arranged at an interval, and an opposite gap is formed between the two first magnet groups which are oppositely arranged; the two vibrating diaphragms are arranged in the opposite gaps at intervals; the at least one second magnet group is arranged between the two vibrating diaphragms which are arranged at an interval; each first magnet group comprises at least one first magnet unit and at least one second magnet unit, the second magnet group comprises at least one second magnet unit, and the plurality of magnet units in the first magnet group are arranged in a Halbach array. According to the technical scheme provided by the invention, the vibrating diaphragms are arranged in the two rows of oppositely arranged Halbach array magnet groups, so that a magnetic field in an opposite gap can be enhanced, and a magnetic field on the outer side of the magnet groups can be weakened, so that metals such as iron are not easily adsorbed on the outer sides of the magnet groups, the safety of equipment is effectively improved, and the service life of the equipment is prolonged. And the effective magnetic field of the loudspeaker assembly is stronger, and the efficiency is higher.

Description

Technical Field

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

[0002] With the continuous development of audio technology, a planar diaphragm speaker has become popular among users because of its more realistic and pure treble and less distortion. Its main principle is to place a planar diaphragm with a conductive circuit in a magnetic field, and pass audio current through the circuit. The conductive circuit is affected by the Ampere force in the magnetic field, thereby driving the planar diaphragm to vibrate and make sound.

[0003] Because the sound quality of planar diaphragm speakers is closely tied to magnetic field strength, engineering practices typically employ two opposing magnets, with the diaphragm positioned between them, to achieve a sufficiently strong magnetic field. While this solution can meet the high magnetic field strength requirements of planar diaphragm speakers, it also generates a high-intensity magnetic field outside the magnets. This exposes the speaker's housing to the magnetic field, and metals like iron, cobalt, and nickel are easily attracted to the housing, potentially damaging the speaker and injuring the user. Utility Model Content

[0004] In view of the above problems, the present application is proposed to provide a speaker assembly and a speaker device that solve the above problems.

[0005] In one embodiment of the present application, a speaker assembly is provided, comprising:

[0006] Two groups of first magnet groups are arranged opposite to each other with an interval, and an opposing gap is formed between the two opposing groups of first magnet groups;

[0007] Two diaphragms are spaced apart in the opposing gap, and a circuit is provided on the diaphragms;

[0008] a second magnet group, disposed between the two diaphragms spaced apart;

[0009] Each of the first magnet groups includes at least one first magnet unit and at least one second magnet unit, the second magnet group includes at least one second magnet unit, and the multiple magnet units in the first magnet group are arranged in a Halbach array.

[0010] Optionally, the arrangement direction of the first magnet group and the arrangement direction of the second magnet group are in the same direction as the amplitude of the diaphragm, and a gap is provided between adjacent first magnet groups and second magnet groups;

[0011] The diaphragm is respectively arranged parallel to the first magnet group and the second magnet group, and is located between the first magnet group and the second magnet group.

[0012] Optionally, the direction of the magnetic field inside the first magnet unit is perpendicular to the width of the diaphragm, and the direction of the magnetic field inside the second magnet unit is parallel to the diaphragm;

[0013] In the first magnet group, the first magnet units and the second magnet units are spaced apart and arranged in a Halbach array, the first magnet units in the two first magnet groups are placed opposite each other with the same poles, and the magnetic fields in the opposing second magnet units are in the same direction;

[0014] In the second magnet group, the magnetic fields inside adjacent second magnet units are in opposite directions.

[0015] Optionally, along the diaphragm width, the second magnet units in the second magnet group are respectively arranged corresponding to the second magnet units in the first magnet groups on both sides;

[0016] The second magnet unit in the second magnet group has the same internal magnetic field direction as the second unit in the first magnet group.

[0017] Optionally, the second magnet unit in the second magnet group is located at a projection of the second magnet unit in the first magnet group on the second magnet group;

[0018] Alternatively, the second magnet unit in the second magnet group is located in the projection of both sides of the first magnet unit in the first magnet group on the second magnet group.

[0019] Optionally, it further includes a shell, the first magnet group and the second magnet group are respectively fixedly arranged on the shell, and the diaphragm is connected to the shell or the magnet unit through a suspension component.

[0020] Optionally, the suspension components are arranged at both ends or around the diaphragm.

[0021] Optionally, the circuits on two different diaphragms are connected in series or in parallel or are powered independently.

[0022] In another embodiment of the present application, a speaker device is provided, comprising a sound body and the above-mentioned speaker assembly;

[0023] The sound body has a accommodating cavity, and the speaker assembly is arranged in the accommodating cavity.

[0024] Optionally, opposite side walls of the acoustic body are respectively provided with sound-transmitting holes;

[0025] The sound-transmitting hole is arranged corresponding to the gap between the first magnet unit and the second magnet unit in the first magnet group.

[0026] Optionally, the cross-sectional shape of the acoustic body is one of circular, square, elliptical, and polygonal.

[0027] In the technical solution provided in the embodiment of the present application, by arranging the diaphragm in two rows of opposing Halbach array magnet groups, not only can the magnetic field in the opposing gap be strengthened, but the magnetic field outside the magnet group can also be weakened, thereby making it difficult for metals such as iron to be adsorbed on the outside of the magnet group, effectively improving the safety of the equipment, and making the effective magnetic field of the speaker assembly stronger and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 A magnetic field diagram of an opposing magnet provided in an embodiment of the present application;

[0030] Figure 2 A simplified structural diagram of a speaker assembly provided in an embodiment of the present application;

[0031] Figure 3 A top view of a speaker assembly provided in an embodiment of the present application;

[0032] Figure 4a A magnetic field effect diagram of a speaker assembly provided in an embodiment of the present application;

[0033] Figure 4b Schematic diagrams of different configurations of the speaker assembly provided in the embodiments of the present application;

[0034] Figure 5 A stereoscopic diagram of a loudspeaker assembly provided in an embodiment of the present application;

[0035] Figure 6 A simplified structural diagram of another speaker assembly provided in an embodiment of the present application;

[0036] Figure 7 A stereoscopic diagram of a speaker device provided in an embodiment of the present application;

[0037] Figure 8 A simplified structural diagram of another speaker assembly provided in an embodiment of the present application;

[0038] Figure 9 A cross-sectional view of a speaker device provided in an embodiment of the present application;

[0039] Figure 10 A cross-sectional view of another speaker device provided in an embodiment of the present application;

[0040] Figure 11 This is a schematic diagram of the sound field of a speaker device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application. The "including" mentioned throughout the specification and claims is an open term and should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. In addition, in the embodiments of the present application, a plurality refers to two or more. Unless there is any contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0042] The sound quality of a planar diaphragm speaker is related to the strength and uniformity of the magnetic field at the diaphragm. When the diaphragm is in a magnetic field with a high strength and uniformity, the diaphragm will not only produce louder sound, but also better sound quality. To obtain a higher strength and more uniform magnetic field, see Figure 1 , usually two magnets are set up in a way that the same poles are opposed to each other, and an opposing gap (region A) is formed between the two magnets. The magnetic field strength in the opposing gap will be significantly increased, although this method can meet the diaphragm's requirement for high magnetic field strength. However, since each magnet usually has two poles, there is always a magnetic field on both sides of the magnet pair (region B). In addition to being unable to be effectively used, this magnetic field can easily adsorb metal materials such as iron, cobalt, and nickel. Specifically, in speaker equipment, opposing magnets are usually arranged in a shell with a accommodating cavity. When the box is small, the magnetic field in region B on both sides of the magnet pair will cause part of the space outside the shell to be within the magnetic field range of region B. If metal materials such as iron, cobalt, and nickel are close to the shell at this time, these materials will be easily adsorbed outside the shell. The strong magnetic attraction will not only easily damage the speaker equipment, but also easily injure the user. If the volume of the box is increased due to this, it is not cost-effective. In addition, when the diaphragm 3 vibrates, the box will be subjected to the force and vibrate. At this time, the speaker body needs to be specially treated for shock absorption, but the shock absorption effect is difficult to achieve perfect.

[0043] In order to avoid the generation of excess strong magnetic fields on the outer sides of a pair of opposing magnets and utilize the magnetic fields more efficiently, and to solve the above problems by changing the vibration mode of the diaphragm 3, the present application provides a speaker assembly and a speaker device.

[0044] See also Figure 2 and Figure 3 In one embodiment of the present application, a speaker assembly is provided, which includes: two first magnet groups 1, two diaphragms 3 and one second magnet group 2. The two first magnet groups 1 are arranged opposite to each other, and an opposing gap is formed between the two opposing first magnet groups 1 and the second magnet group 2. The opposing gap can be understood as Figure 3 The two diaphragms 3 are respectively arranged in the opposing gaps. The two diaphragms 3 are parallel to each other and to the arrangement direction of the first magnet group 1. A circuit is provided on the diaphragm 3. When a signal current is connected to the circuit, the circuit will drive the two diaphragms 3 to vibrate in opposite directions. Figure 2 As shown, in a specific embodiment, one of the vibration directions of the diaphragm 3 is Figure 2 The X direction of the middle arrow is in the same direction, the arrangement direction of the first magnet group 1 is in the same direction as the Y direction of the arrow, and the length direction of the first magnet group 1 is in the same direction as the Z direction of the arrow.

[0045] There are two diaphragms 3 in the speaker assembly, which includes two first magnet groups 1 and one second magnet group 2. The two diaphragms 3 are respectively arranged on both sides of the second magnet group 2, and the two first magnet groups 1 are respectively located on the outside of different diaphragms 3. Figure 2 , along the width direction of the speaker assembly (such as Figure 2 In the X direction, the first magnet group 1, the diaphragm 3, the second magnet group 2, the diaphragm 3, and the first magnet group 1 are arranged in sequence.

[0046] The arrangement direction of the second magnet group 2 is the same as the arrangement direction of the first magnet group 1. Each first magnet group 1 includes at least one first magnet unit 11 and at least one second magnet unit 21, and the second magnet group 2 includes at least one second magnet unit 21. The first magnet units 11 and the second magnet units 21 in the first magnet group 1 are arranged in a Halbach array.

[0047] The second magnet units 21 in the second magnet group 2 mainly act together with the magnetic fields of the two first magnet groups 1 of the Halbach array to generate a stronger uniform magnetic field in the gaps on both sides of the second magnet group 2 .

[0048] It should be noted that the first magnet unit 11 and the second magnet unit 21 are two types of magnet units with different magnetic pole directions, wherein, see Figure 3, the magnetic pole direction of the first magnet unit 11 (the direction of the magnetic field lines inside the magnet, the same as the magnetic pole direction below) is perpendicular to the width of the diaphragm 3, and the magnetic field direction of the second magnet unit 21 is parallel to the width of the diaphragm 3. The magnet units included in the second magnet group 2 are all second magnet units 21. The magnetic field directions of two adjacent second magnet units 21 in the second magnet group 2 are parallel to the width of the diaphragm 3, but the magnetic field directions of adjacent different second magnet units 21 are in opposite directions. For example, Figure 3 In the embodiment, the second magnet group 2 includes two second magnet units 21, wherein the magnetic field direction of one second magnet unit 21 points upward, and the magnetic field direction of the other second magnet unit 21 points downward. Figure 3 , the number of the second magnet units 21 in the second magnet group 2 is equal to the number of the second magnet units 21 in one first magnet group 1, and the projection positions of the two magnet units on the diaphragm 3 are the same, and the magnetic field directions of the second magnet units 21 located in the same row are the same. In another possible embodiment, see Figure 4b In Figure b, the number of second magnet units 21 in the second magnet group 2 is greater than the number of second magnet units 21 in one first magnet group 1, and the second magnet units 21 in the second magnet group 2 are located in the projections of the diaphragm 3 on both sides of the first magnet units 11 in the first magnet group 1.

[0049] A Halbach array is a magnet arrangement that is considered nearly ideal in engineering. It can generate a strong magnetic field with a relatively small number of magnets. Furthermore, when a Halbach array is used, the magnetic field strength on one side of the array increases while the magnetic field on the other side decreases.

[0050] See also Figure 3 Since the multiple magnet units in the first magnet group 1 are arranged in a Halbach array, Figure 3 The magnetic field in area C is effectively enhanced, while the magnetic field in area D is effectively weakened. This makes it difficult for metals such as iron to be attracted to the outside of the magnet group, effectively improving the safety of the device and improving the sound quality of the speaker assembly. Figure 3 The direction of the arrow is the direction of the magnetic field inside the magnet unit.

[0051] In the technical solution of this application, a second magnet group 2 is disposed between two first magnet groups 1. The second magnet group 2 can interact with the magnetic fields of the two first magnet groups 1, thereby strengthening the magnetic field in the gap formed between each first magnet group 1 and the second magnet group 2, and weakening the magnetic field outside each first magnet group 1. This not only strengthens the magnetic field in the effective area, but also improves the safety of the speaker assembly.

[0052] See also Figure 1In one embodiment provided herein, along the length direction of the speaker assembly (direction indicated by arrow Y in the figure), the first magnet group 1 is arranged in the same direction as the second magnet group 2, and the diaphragm 3 is arranged parallel to the first magnet group 1 and the second magnet group 2, respectively. This can be understood as one side of the diaphragm 3 facing the first magnet group 1, and the other side facing the second magnet group 2. The diaphragm 3 is spaced apart from the first magnet group 1 and the second magnet group 2, respectively. The distance between the diaphragm 3 and the first magnet group 1 can be the same as or different from the distance between the diaphragm 3 and the second magnet group 2.

[0053] like Figure 2 In the figure, the arrangement direction of the first magnet group 1 is in the same direction as the arrow Y direction (the length direction of the speaker assembly), and the length direction of the first magnet group 1 is in the same direction as the arrow Z direction (the height direction of the speaker assembly). However, this application does not specifically limit the arrangement direction of the first magnet group 1 and the length direction of the first magnet group 1. The above is just one specific example. However, at all times, the arrangement direction of the second magnet group 2 is consistent with the arrangement direction of the first magnet group 1.

[0054] Further, see Figure 3 and Figure 5 Along the width direction of the speaker assembly, the second magnet units 21 in the second magnet group 2 are respectively arranged on both sides corresponding to a second magnet unit 21 in the first magnet group 1, and the magnetic pole directions of the corresponding second magnet units 21 are the same. Figure 4a Due to the action of the second magnet unit 21, the magnetic field in the E region of the figure can be in the same direction as the setting direction of the diaphragm 3, and the magnetic field strength in the E region of the figure can be effectively enhanced.

[0055] See also Figure 4bThe present application provides a variety of different configurations of speaker assemblies, in which the number of magnet units in the first magnet group 1 and the second magnet group 2 in the speaker assemblies of different configurations is different. For example, in Figure a, each first magnet group 1 includes one first magnet unit 11 and two second magnet units 21, while the second magnet group 2 includes two second magnet units 21. For another example, in Figure c, each first magnet group 1 includes two first magnet units 11 and one second magnet unit 21, while the second magnet group 2 includes only one second magnet unit 21. For another example, in Figure d, each first magnet group 1 includes two first magnet units 11 and three second magnet units 21, while the second magnet group 2 includes three second magnet units 21. For another example, in Figure e, each first magnet group 1 includes three first magnet units 11 and four second magnet units 21, while the second magnet group 2 includes four second magnet units 21. Theoretically, there are countless configurations of speaker assemblies. In general, no matter what configuration the speaker assembly has, the number of magnet units in the two first magnet groups 1 of the speaker assembly is the same, and the number of second magnet units 21 in the second magnet group 2 is greater than or equal to the number of second magnet units 21 in the first magnet group 1.

[0056] See also Figure 6 and Figure 7 The speaker assembly further includes a housing 5, on which the first magnet group 1 and the second magnet group 2 are respectively fixed. Specifically, each first magnet unit 11 and second magnet unit 21 in the first magnet group 1 can be connected to the housing 5 by direct bonding or fastened to the housing 5 by fasteners. The second magnet unit 21 in the second magnet group 2 can be connected to the housing 5 by bonding at both ends.

[0057] To ensure stability between multiple magnet units and facilitate the installation of magnet groups, see Figure 5 In one embodiment provided herein, the speaker assembly further includes a fixing bracket 8 , to which the plurality of magnet units are fixedly mounted, thereby ensuring that the plurality of magnet units are fixed in position. When installing the magnet assembly, simply placing the fixing bracket 8 in the housing 5 completes the installation of the plurality of magnet units.

[0058] In one specific embodiment, a speaker assembly includes an outer bracket 82 and an interlayer bracket 81. The interlayer bracket 81 is disposed between the two outer brackets 82, and the different brackets are spaced apart from each other. A first magnet group 1 is disposed on the outer bracket 82, and a second magnet group 2 is disposed on the interlayer bracket 81. The first magnet group 1 includes a plurality of magnet units spaced apart from each other. The outer bracket 82 is provided with a plurality of magnet mounting positions, and the plurality of magnet units are disposed in the magnet mounting positions. The interlayer bracket 81 is also provided with a plurality of magnet mounting positions, and the second magnet units 21 are disposed in the magnet mounting positions. The plurality of second magnet units 21 in the second magnet group 2 have substantially the same thickness as the interlayer bracket 81. The plurality of magnet units in the first magnet group 1 are disposed on the inner surface of the outer bracket 82. Corresponding to the gaps between two adjacent magnet units in the first magnet group 1, the outer bracket 82 is provided with a plurality of sound outlets 821, through which the sound emitted by the diaphragm can be transmitted. To facilitate the connection of the outer bracket 82 and the interlayer bracket 81, the outer bracket 82 and the interlayer bracket 81 are respectively provided with mounting holes 811, and the outer bracket 82 and the interlayer bracket 81 can be connected to each other by bolts. In addition, the outer bracket 82 and the interlayer bracket 81 can also be an integrated structure.

[0059] The diaphragm 3 needs to always be in the opposing gap during the vibration process, and can also be reset to the middle position of the opposing gap after the vibration is completed. In one embodiment provided in the present application, the speaker assembly also includes a suspension assembly 4, and the diaphragm 3 is connected to the shell 5 or the magnet unit (the first magnet unit 11 and / or the second magnet unit 21) through the suspension assembly 4. The suspension assembly 4 is arranged at both ends or all around the diaphragm 3. The suspension assembly 4 includes but is not limited to: a spring, an elastic rope, an elastic bracket, an elastic strip, etc. In a specific embodiment, the suspension assembly 4 is an elastic rope, and the elastic rope is arranged at both ends of the diaphragm 3 along the length direction of the diaphragm 3. One end of the elastic rope is connected to the diaphragm 3, and the other end is connected to the shell 5 or the magnet unit. The elastic force provided by the elastic rope can make the diaphragm 3 always suspended in the middle position of the opposing gap. When the diaphragm 3 vibrates to one side, the elastic force of the elastic rope can drive the diaphragm 3 to reset.

[0060] In another embodiment, see Figure 6 The suspension component 4 is an elastic strip, which is arranged around the diaphragm 3. One side of the elastic strip is connected to the diaphragm 3, and the other side is connected to the wall of the housing 5. Using the elastic strip as the suspension component 4 not only effectively suspends the diaphragm 3 at the center of the opposing gap, but also divides the housing 5 into an inner cavity and an outer cavity.

[0061] Furthermore, each diaphragm 3 on the loudspeaker assembly is provided with an independent suspension assembly 4 .

[0062] The diaphragm 3 is composed of a multi-layer structure. In a specific embodiment, the diaphragm 3 is a three-layer structure, and the middle layer is an EVA (Ethylene Vinyl Acetate Copolymer) layer, which has a certain rigidity and toughness and can effectively support the diaphragm 3. Metal layers such as aluminum foil are respectively provided on both sides of the EVA layer. Usually, glue can be brushed on both sides of the EVA layer, and then the aluminum foil layer is bonded to the surface of the EVA layer. A circuit structure is formed on the surface of the aluminum foil layer, and when the circuit structure is energized, the entire diaphragm 3 can be driven to vibrate. The present application does not make any specific restrictions on the specific material of the middle layer of the diaphragm 3. As long as the material of the middle layer has a certain rigidity and toughness, it can meet the technical solution of the present application. For example, the material of the middle layer includes but is not limited to: plastic sheet, carbon fiber sheet, cardboard, polymer material board, composite material board, silicone film, glass fiber glue, cloth-based double-sided tape, paper-based double-sided tape, etc.

[0063] See also Figure 7 and Figure 8 In one embodiment of the present application, a speaker device is also provided, which includes an acoustic body 10 and the above-mentioned speaker assembly, wherein the acoustic body 10 has a receiving cavity, and the speaker assembly is arranged in the receiving cavity. Sound holes 7 are respectively provided on the opposite side walls of the acoustic body 10. The sounds emitted by different diaphragms 3 can be transmitted from the sound holes 7 on different side walls. In order to reduce the sound emitted by the diaphragm 3 from being blocked or reflected by the acoustic body 10, the sound holes 7 are arranged corresponding to the gap between the first magnet unit 11 and the second magnet unit 21 in the first magnet group 1. Specifically, the sound holes 7 are opened in the two first magnet units 11 and the second magnet units 21 that are spaced apart, and the width of the sound holes 7 is equal to the width of the gap. In this way, the area of ​​the sound holes 7 can be increased as much as possible, thereby improving the efficiency of the sound transmission emitted by the diaphragm 3.

[0064] Furthermore, the shape of the speaker assembly is substantially square, and the cross-sectional shape of the sound body 10 includes but is not limited to: circular, square, elliptical, polygonal. The shape of the speaker assembly is substantially square, and the speaker assembly is fixedly arranged in the sound box body.

[0065] See also Figure 9 In one embodiment provided in the present application, a speaker device is further provided, which includes at least one sound body 10 having a cavity structure 50 and the speaker assembly mentioned above. The speaker assembly is arranged in the sound body 10, and the outer brackets 82 on the speaker assembly are respectively arranged in the openings on the sound body 10, and the two outer brackets 82 are respectively substantially flush with the outer surface of the sound body 10. As mentioned above, in order to stably set the diaphragm 3 in the gap between the first magnet group 1 and the second magnet group 2, a suspension assembly 4 is provided on the diaphragm 3. Figure 9As shown, the suspension assembly 4 is a semi-arc-shaped elastic strip, positioned at the edge of the diaphragm 3. One side of the elastic strip is connected to the edge of the diaphragm 3, and the other side is connected to the inner surface of the outer bracket 82. Similarly, the diaphragm 3 between the other first magnet group 1 and the second magnet group 2 is similarly configured. This isolates the cavity structure 50 into a sealed space, with the backs of the two diaphragms 3 facing the cavity structure 50 and the fronts of the two diaphragms 3 facing the sound outlet 821 on the outer bracket 82.

[0066] When the speaker assembly vibrates to produce sound, the two diaphragms 3 vibrate at the same time, for example, they vibrate inward at the same time or outward at the same time. When the two diaphragms 3 vibrate, the sounds emitted from the outside of the two diaphragms 3 can be propagated outward from the sound outlet holes 821 on different outer supports 82 respectively. Not only will these two sound waves not cancel each other out, but they can also be superimposed on each other because they have the same phase. The sound waves emitted from the inside of the two diaphragms 3 are transmitted through the gap between the first magnet group 1 and the second magnet group 2 to the cavity structure 50 and are absorbed by the sound body 10. Of course, sound-absorbing material can also be placed in the cavity structure 50, and the sound waves entering the cavity structure 50 are absorbed by the sound-absorbing material, or as Figure 8 As shown, a complex structure capable of absorbing sound waves is provided in the acoustic body 10 to absorb the sound waves entering the cavity structure 50 .

[0067] In addition, since the vibration directions of the two diaphragms 3 are opposite, the kinetic energy of the vibrations of the two diaphragms 3 can cancel each other out. Then, for the entire sound body 10, the sound body 10 is subjected to balanced forces and no force vibration occurs.

[0068] See also Figure 10 In another embodiment of the present application, a speaker device is also provided, which includes two sound bodies 10 having a cavity structure 50 and the speaker assembly mentioned above. The two sound bodies 10 are respectively arranged on both sides of the speaker assembly and are connected to the external brackets 82 on both sides. The sound outlet 821 on the external bracket 82 is connected to the cavity structure 50 of the sound body 10. Similarly, a diaphragm 3 is respectively provided in the gap between the first magnet group 1 and the second magnet group 2 on both sides. The edge of the diaphragm 3 is connected to a suspension component 4 which is an elastic strip. The other end of the suspension component 4 is connected to the inner surface of the external bracket 82, so that the cavity structure 50 connected to the sound outlet 821 is separated from the external space.

[0069] Combined with the above mentioned Figure 9In the embodiment, the two diaphragms 3 will vibrate synchronously, that is, they will vibrate outward or inward at the same time. When the two diaphragms 3 vibrate, the sound waves emitted by the diaphragms can propagate outward through the gap between the first magnet group 1 and the second magnet group 2. At this time, the sound emitted by the diaphragms 3 propagates outward through the open gaps around the speaker assembly. It can be considered that the speaker assembly is a line sound source. In the axial direction perpendicular to the plane where the speaker assembly is located, the listening effect is consistent at different positions at the same distance from the speaker assembly and at an angle to the plane where the speaker assembly is located. Specifically, see Figure 11 Since the speaker device is surrounded by open slots 33 , the sound emitted by the speaker device has no obvious directionality in the horizontal direction. Figure 11 This is just one example; the width of the open slot 33 can be narrower. In the figure, point O is the same distance from points G, H, and J. Although these points are at different angles to the plane where point O lies, the listening experience at points G, H, and J is consistent.

[0070] See also Figure 10 On the side where the diaphragm 3 is combined with the cavity structure 50, the sound waves emitted by the diaphragm 3 can enter different cavities 50 of the sound body 10. The cavity structure 50 can be provided with sound-absorbing materials or suction structures, and these sound waves are gradually consumed and absorbed in the cavity structure 50. Similarly, because the vibration directions of the two diaphragms 3 are opposite, the kinetic energy of the two diaphragms 3 can offset each other, and the forces acting on the sound body 10 are also balanced, and no force vibration occurs.

[0071] To sum up, in the technical solution provided in the present application, by setting the diaphragm in two rows of opposing Halbach array magnet groups, not only can the magnetic field in the opposing gap be strengthened, but also the magnetic field outside the magnet group can be weakened, so that it is not easy for metals such as iron to be adsorbed on the outside of the magnet group, which effectively improves the safety of the equipment and also makes the sound quality of the speaker assembly better.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A speaker assembly, characterized in that: include: Two groups of first magnet groups are arranged opposite to each other with an interval, and an opposing gap is formed between the two opposing groups of first magnet groups; Two diaphragms are spaced apart and arranged in the opposing gap, and the diaphragms are provided with circuits; a second magnet group, disposed between the two diaphragms spaced apart; Each of the first magnet groups includes at least one first magnet unit and at least one second magnet unit, the second magnet group includes at least one second magnet unit, and the multiple magnet units in the first magnet group are arranged in a Halbach array.

2. The loudspeaker assembly according to claim 1, wherein The arrangement direction of the first magnet group and the arrangement direction of the second magnet group are in the same direction as the amplitude of the diaphragm, and a gap is provided between adjacent first magnet groups and second magnet groups; The diaphragm is respectively arranged parallel to the first magnet group and the second magnet group, and is located between the first magnet group and the second magnet group.

3. The loudspeaker assembly according to claim 1, wherein The direction of the magnetic field inside the first magnet unit is perpendicular to the width of the diaphragm, and the direction of the magnetic field inside the second magnet unit is parallel to the diaphragm; In the first magnet group, the first magnet units and the second magnet units are spaced apart and arranged in a Halbach array, the first magnet units in the two first magnet groups are placed opposite each other with the same poles, and the magnetic fields in the opposing second magnet units are in the same direction; In the second magnet group, the magnetic fields inside adjacent second magnet units are in opposite directions.

4. The loudspeaker assembly according to claim 3, wherein Along the diaphragm width, the second magnet units in the second magnet group are respectively arranged corresponding to the second magnet units in the first magnet groups on both sides; The second magnet unit in the second magnet group has the same internal magnetic field direction as the second magnet unit in the first magnet group.

5. The loudspeaker assembly according to claim 4, wherein: The second magnet unit in the second magnet group is located at a projection of the second magnet unit in the first magnet group on the second magnet group; Alternatively, the second magnet unit in the second magnet group is located in the projection of both sides of the first magnet unit in the first magnet group on the second magnet group.

6. The loudspeaker assembly according to claim 1, wherein It also includes a shell, the first magnet group and the second magnet group are respectively fixedly arranged on the shell, and the diaphragm is connected to the shell or the magnet unit through a suspension component.

7. The loudspeaker assembly according to claim 6, wherein: The suspension components are arranged at both ends or around the diaphragm.

8. The loudspeaker assembly according to claim 1, wherein The circuits on the two different diaphragms are connected in series or in parallel or are powered independently.

9. A speaker device, characterized in that: comprising an acoustic body and a loudspeaker assembly according to any one of claims 1 to 8; The sound body has a accommodating cavity, and the speaker assembly is arranged in the accommodating cavity.

10. The speaker device according to claim 9, wherein The opposite side walls of the acoustic body are respectively provided with sound-transmitting holes; The sound-transmitting hole is arranged corresponding to the gap between the first magnet unit and the second magnet unit in the first magnet group.

11. The speaker device according to claim 10, wherein The cross-sectional shape of the acoustic body is one of a circle, a square, an ellipse and a polygon.

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