Vibrating diaphragm, loudspeaker assembly and loudspeaker equipment

Abstract

The embodiment of the utility model provides a vibrating diaphragm, a loudspeaker assembly and a loudspeaker device. The vibrating diaphragm comprises a supporting layer, a first electrode and a second electrode, the at least one conductive circuit is arranged on the supporting layer; wherein the track of the conductive circuit sequentially surrounds the periphery of the center of the projection drawing of each magnet unit by at least 90 degrees based on the projection drawing of the magnet units on the supporting layer. In the technical scheme provided by the invention, the conductive circuit sequentially surrounds the plurality of areas on the periphery of the center of the projection drawing of each magnet unit, so that the structure of the conductive circuit on the vibrating diaphragm is optimized, and the total harmonic distortion of the loudspeaker is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of loudspeakers, and in particular to a diaphragm, 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] Typically, multiple conductive circuits on the diaphragm are evenly distributed on the diaphragm. The vibration mode of the diaphragm is strictly related to the total harmonic distortion of the speaker. Therefore, optimizing the structure of the conductive circuit on the diaphragm can effectively reduce the total harmonic distortion of the speaker. Utility Model Content

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

[0005] In one embodiment of the present application, a diaphragm is provided, which is applicable to a magnetic system having a plurality of magnet groups, wherein the plurality of magnet groups are arranged at intervals, and the magnetic poles of adjacent magnet groups are opposite; each magnet group includes at least two magnet pairs, and different magnet pairs are arranged at intervals and have opposite magnetic poles; each magnet pair includes two magnet units with the same poles arranged opposite each other; an opposing gap is provided between the magnet units with the same poles, and the diaphragm is disposed in the opposing gap;

[0006] The diaphragm includes:

[0007] Support layer;

[0008] at least one conductive circuit disposed on the support layer;

[0009] Wherein, based on the projection of the magnetic unit on the support layer, the track of the conductive circuit sequentially surrounds the center periphery of the projection of each magnetic unit by at least 90 degrees.

[0010] Optionally, when the track of the conductive circuit sequentially surrounds the periphery of the center of the projection of one of the magnetic units multiple times, the width or cross-sectional area of ​​the conductive circuit at different surround times is different;

[0011] Alternatively, the width or cross-sectional area of ​​the conductive circuit is different on different areas of the diaphragm.

[0012] Optionally, along the length direction of the diaphragm, the conductive circuit is in an S-shaped structure and surrounds and passes through the projections of multiple magnet units in sequence. For the projections of adjacent different magnet units, the conductive circuit has different directions of bypassing the corresponding magnet unit projections; when current is input into the conductive circuit, the current has different directions of bypassing the corresponding magnet unit projections.

[0013] Optionally, the conductive circuit is provided on both the front and back surfaces of the support layer, and the conductive circuit on the front surface has the same shape as the conductive circuit on the back surface;

[0014] The conductive circuit on the front side is arranged in the opposite direction to the conductive circuit on the back side.

[0015] Optionally, multiple layers of the conductive circuit are provided on the front and / or back surface of the support layer.

[0016] Optionally, the conductive circuit on the front surface is connected in series or in parallel with the conductive circuit on the back surface;

[0017] Alternatively, the conductive circuit on the front surface of the supporting layer is independent of the conductive circuit on the back surface of the supporting layer.

[0018] Optionally, other areas on the front and back surfaces of the support layer corresponding to the area where the conductive circuit is located are respectively covered with metal films, and the metal films and the conductive circuit are insulated from each other.

[0019] Optionally, the metal film on the front surface of the supporting layer is bent from the edge of the supporting layer and extends to the back surface of the supporting layer;

[0020] Alternatively, the metal film is coated and adhered to the front and back surfaces of the support layer respectively.

[0021] Optionally, it further comprises a reinforcement structure, wherein the reinforcement structure is connected to the support layer;

[0022] The reinforcement structure includes transverse reinforcements.

[0023] Optionally, the force rib structure is provided in the supporting layer; or, the force rib structure is bonded to the front or back surface of the supporting layer; or, the force rib structure is bonded to the conductive circuit on the front and / or back surface of the diaphragm.

[0024] In one embodiment of the present application, a speaker assembly is further provided, comprising:

[0025] A plurality of magnet groups, wherein the plurality of magnet groups are arranged at intervals, and the magnetic poles of adjacent magnet groups are opposite; each magnet group includes two magnet pairs, and different magnet pairs are arranged at intervals and have opposite magnetic poles; each magnet pair includes two magnet units with the same poles arranged opposite to each other;

[0026] the aforementioned diaphragm;

[0027] There is an opposing gap between the magnet units that are arranged with the same poles, and the diaphragm is arranged in the opposing gap.

[0028] In another embodiment of the present application, a speaker device is provided, comprising: a sound body and at least one of the above-mentioned speaker components;

[0029] The speaker assembly is arranged on the sound body.

[0030] In the technical solution provided by this application, by sequentially surrounding multiple areas around the center of each magnet unit's projection, the conductive circuit effectively improves the efficiency of the conductive circuit's utilization of the magnet's magnetic field. Furthermore, by optimizing the structure of the conductive circuit on the diaphragm, the speaker's total harmonic distortion can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1 A simplified structural diagram of a speaker assembly provided in an embodiment of the present application;

[0033] Figure 2 A top view of a speaker assembly provided in an embodiment of the present application;

[0034] Figure 3 A left side view of a speaker assembly provided in an embodiment of the present application;

[0035] Figure 4 A front view of a speaker assembly provided in an embodiment of the present application;

[0036] Figure 5 A front view of a diaphragm provided in an embodiment of the present application;

[0037] Figure 6 A front view of another diaphragm provided in an embodiment of the present application;

[0038] Figure 7A schematic structural diagram of a diaphragm and rib structure provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] 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.

[0040] See also Figures 1 to 3 In one embodiment of the present application, a diaphragm 1 is provided. The diaphragm 1 is suitable for a magnetic system with opposite polarities. The magnetic system includes a plurality of magnet groups 2, each magnet group 2 including at least two magnet pairs, for example Figure 1 The first magnet pair 21 and the second magnet pair 22 in the embodiment include two magnet units 4 arranged with N poles facing each other, and the second magnet pair 22 includes two magnet units 4 arranged with S poles facing each other. Each magnet pair can also be considered as a pair of magnet units. Figure 1 In the direction of the arrow X, different magnet pairs are spaced apart and have opposite magnetic poles. There is an opposing gap between the magnet units 4 with the same poles. The diaphragm 1 is arranged in the opposing gap 10 of the multiple pairs of magnet units 4. Figure 1 The middle arrow Y direction is the width direction of the opposing gap, and the width direction of the diaphragm 1 is perpendicular to the width direction of the opposing gap 10. Figure 1 In the direction of the middle arrow Z, multiple magnet groups 2 are arranged at intervals, and the magnetic poles of adjacent magnet groups are in opposite directions.

[0041] See also Figures 2 to 4 It should be noted that each magnet unit 4 includes an N pole and an S pole. The magnet units 4 having the same poles can be understood as the magnet units 4 located on different sides of the diaphragm 1 and arranged opposite to each other have the same magnetic poles facing the diaphragm 1, for example Figure 3In the embodiment, both magnet units 4 of the first magnet pair 21 have their N poles facing the diaphragm 1. The opposite magnetic poles of adjacent magnet pairs can be understood as the two magnet units 4 of the first magnet pair 21 have their N poles facing each other, while the two magnet units 4 of the second magnet pair 22 have their S poles facing each other. The opposite magnetic poles of adjacent magnet groups 2 can be understood as the opposite magnetic poles of adjacent magnet pairs in adjacent magnet groups 2, for example, see Figure 4 The first magnet pairs 21 in the first magnet group 2 are adjacent to the second magnet pairs 22 in the second magnet group 2, that is, each first magnet pair 21 in the magnetic system is surrounded by a second magnet pair 22.

[0042] Further, see Figure 3 The diaphragm 1 includes a supporting layer 11 and at least one conductive circuit 12. At least one conductive circuit 12 is arranged on the supporting layer 11. The supporting layer 11 is used to provide supporting force for the conductive circuit 12. When the conductive circuit 12 vibrates, it can also drive the supporting layer 11 to vibrate together, thereby increasing the effective vibration area of ​​the diaphragm 1 and increasing the volume level of the sound.

[0043] Since the magnet units 4 in the magnet group 2 are arranged with the same poles facing each other, the magnetic fields at different positions around the magnet group 2 are different. Not only are the magnetic fields at different positions on the diaphragm 1 different, but the magnetic fields at each position will also change when the diaphragm 1 vibrates. In order to make the diaphragm 1 vibrate more stably and to more effectively utilize the magnetic field in the opposing gap 10, it is necessary to optimize the arrangement of the conductive circuit 12 on the diaphragm 1 so that each part of it is subjected to a more reasonable force during the vibration of the diaphragm 1, thereby reducing the bad vibration modes of the diaphragm 1, reducing the total harmonic distortion, and improving the sound quality.

[0044] See also Figures 1 to 5 The planes where the magnetic units 4 on both sides of the diaphragm 1 are located are considered to be parallel to the plane where the diaphragm 1 is located, so each magnetic unit 4 will have a projection on the plane where the support layer 11 is located. Based on the projection of the magnetic unit 4 on the support layer 11, the trajectory of the conductive circuit 12 is projected around each magnetic unit in turn. Figure 5 The periphery of the center is at least 90 degrees. Specifically, the tracks of the conductive circuit 12 are distributed on the projection of the magnetic unit. Figure 5 In order to better arrange the entire circuit structure in series, the conductive circuit 12 is not 360 degrees around the center of the projection, but is distributed in the projection of the magnetic unit. Figure 5 Within an angular range around the center, the angle range is [90 degrees to 360 degrees]. In a specific implementation, for example Figure 5 The conductive circuit segment 12c in the embodiment is projected around the magnetic unit. Figure 5 The periphery of the center is about 120 degrees. In addition, the projection of different magnet units Figure 5 The angular ranges of the conductive circuits 12 distributed around the center and the periphery are the same or different.

[0045] In the technical solution provided in this application, the conductive circuit 12 is projected around each magnetic unit in turn according to the change of the magnetic field distribution when the diaphragm 1 vibrates. Figure 5 At least part of the center area, thereby effectively improving the efficiency of the conductive circuit 12 in utilizing the magnetic field of the magnet. Figure 3 and Figure 4 The dotted arrows in the figure represent the direction of the magnetic flux lines generated by the magnetic unit 4. The oppositely arranged magnetic units 4 will form an effective magnetic field around the magnetic unit 4. By projecting the conductive circuit 12 around each magnetic unit in turn, Figure 5 At least part of the center, i.e. Figure 3 and Figure 4 The conductive circuit 12 is distributed on the diaphragm 1 in the dotted box area. The conductive circuit 12 is used to make full use of the magnetic field around the magnetic unit 4. According to the results of the magnetic field simulation, the position and width of the conductive circuit 12 are adjusted so that when the diaphragm 1 vibrates, the force on each part of the conductive circuit 12 is stable. Figure 5 , the conductive circuit 12 is projected around each magnetic unit in turn Figure 5 After at least part of the center, there are conductive circuits 12 of varying widths distributed around each magnet unit 4, for example, Figure 5 The conductive circuit 12 in the area framed by the middle elliptical dotted lines A, B, C, D, and E is arranged according to the direction of the magnetic field around the magnetic unit 4 when the diaphragm 1 vibrates, and can effectively utilize the magnetic field around the magnetic unit 4, thereby improving the vibration effect and sound quality of the diaphragm 1.

[0046] See also Figure 2 and Figure 5 In one embodiment provided in the present application, when the trajectory of the conductive circuit 12 is projected around one of the magnetic units in sequence, Figure 5 When the center and the periphery are surrounded multiple times, the width or cross-sectional area of ​​the conductive circuit 12 at different times is different. Alternatively, the width or cross-sectional area of ​​the conductive circuit 12 at different areas of the diaphragm 1 is different. Figure 5 As shown in the figure, the arrow direction is the extension direction of the conductive circuit 12. It can be seen that the conductive circuit 12 is projected by the magnetic unit on one end of the magnetic system. Figure 5 The periphery of the center extends to the projection of the magnet unit on the other end of the magnetic system Figure 5 Specifically, the conductive circuit 12 starts from the periphery of the center of the projection diagram 51 of a magnet unit of the magnetic system head end magnet group 2 ( Figure 5 Then, along the arrangement direction of the magnet group 2 (arrow X direction), the projection is made around each magnet unit on the same side of the magnetic system. Figure 5The periphery of the center, then extends from the periphery of the center of the projection diagram 52 of a magnet unit of the end magnet group 2 of the magnetic system to the periphery of the center of the projection diagram 53 of another magnet unit of the end magnet group 2 of the magnetic system, and then circles around each magnet unit projection diagram on the same side of the magnetic system in the arrangement direction of the magnet group 2. Figure 5 The conductive circuit 12 then returns from the periphery of the center of the projection diagram 54 of a magnet unit of the magnet group 2 at the head end of the magnetic system to the periphery of the center of the projection diagram 51 of another magnet unit at the head end of the magnetic system, and repeats this process, thereby realizing the projection of multiple magnet units. Figure 5 The conductive circuit 12 ends at the end of the multiple loops around the center. Figure 5 Point N in the figure is located near the projection image 54 of the magnet unit.

[0047] by Figure 5 Taking the area indicated by the dotted ellipse A as an example, when the conductive circuit 12 repeatedly wraps around the periphery of the projected center of the magnetic unit 4, the conductive circuit 12a at the outermost periphery of the projected center of the magnetic unit 4 is the widest. This design not only controls the overall resistance of the conductive circuit 12 but also balances the forces acting on different regions of the diaphragm 1. Specifically, since the magnetic field strength in the area corresponding to the outermost conductive circuit 12 varies significantly during diaphragm vibration, appropriately widening the circuit width in this area can reduce the difference in magnetic field strength at that location during vibration in order to maintain a stable force on the diaphragm 1 during vibration. Furthermore, since the outermost conductive circuit 12 is longer than the innermost conductive circuit 12, widening the outermost conductive circuit 12 effectively reduces its resistance. The entire conductive circuit 12 can also wrap around multiple times within a fixed resistance value, effectively improving the utilization of the magnetic field. Furthermore, since the magnetic field strength varies at different locations within the opposing gap 10, the magnetic field strength varies at different locations on the same plane of the diaphragm 1. As the diaphragm 1 vibrates, the forces acting on the diaphragm 1 at different locations will vary. Therefore, in the technical solution of this application, by simulating the variation of magnetic field intensity, the width of the conductive circuit 12 at different positions of the diaphragm 1 is calculated, thereby optimizing the force exerted on the conductive circuit 12 to be relatively stable when the diaphragm 1 vibrates to different positions. In the technical solution provided by this application, the conductive circuit 12 can be a thin layer of circuit with different widths.

[0048] Furthermore, in one embodiment provided in the present application, along the length direction of the diaphragm 1, the conductive circuit 12 is in an S-shaped structure and sequentially surrounds and passes through the projection of multiple magnetic units 4. For adjacent magnetic units 4, the conductive circuit 12 is respectively located at the projection of the magnetic unit. Figure 5 Specifically, see Figure 5For the magnet unit projection diagram 55, the conductive circuit 12 is located on the right side of the magnet unit projection diagram. For the adjacent magnet unit projection diagram 56, the conductive circuit 12 is located on the left side of the magnet unit projection diagram. For the magnet unit projection diagram 57 adjacent to the magnet unit projection diagram 56, the conductive circuit 12 is located on the right side of the magnet unit projection diagram, and so on. According to the arrangement direction of the magnet group 2, between adjacent magnet units 4 in the same magnet column, the conductive circuit 12 is located on the corresponding magnet unit projection diagram. Figure 5 For the magnet unit projection diagram 57 and the magnet unit projection diagram 58, that is, the two magnet unit projection diagrams located in the same magnet group Figure 5 , the conductive circuits 12 are located relative to the projection of the magnetic unit Figure 5 same side of the .

[0049] Typically, points M and N of the conductive circuit 12 are respectively used to connect to an audio controller. The audio current outputted by the conductive circuit 12 can enter the conductive circuit 12 at point M, then flow along the extension direction of the conductive circuit 12, and finally flow out at point N. Of course, the audio current can also enter at point N and exit at point M. In this way, the current flow direction in the conductive circuit 12 will exhibit a regularity, namely, the current in the circuits surrounding adjacent magnetic unit projections flows in opposite directions with the magnetic unit projection as the center. For example, taking point M as the current input terminal, the direction of the current input at point M is the direction indicated by the arrow in the figure. For the conductive circuit 12 on the side of the magnetic unit projection 56, the current in the conductive circuit 12 flows in a clockwise direction, while for the conductive circuit 12 on the side of the longitudinally adjacent magnetic unit projection 57, the current in the conductive circuit 12 flows in a counterclockwise direction. For the conductive circuit 12 on the side of the magnet unit projection 58 adjacent to the magnet unit projection 57, the direction of the current in the conductive circuit 12 becomes clockwise. In this way, according to the direction of the magnetic field, it can be concluded that the conductive circuits 12 with current passing around these magnet unit projections are subjected to the same force direction, and the entire diaphragm 1 will vibrate in the same direction at the same time, that is, the magnet pairs with different magnetic poles are opposite to each other, and their projections are Figure 5 If the direction of the current input at point M changes, the direction of the current in the conductive circuit 12 will also change to the opposite direction, and the entire diaphragm 1 will vibrate in the opposite direction.

[0050] Typically, the conductive circuit 12 is bonded to the support layer 11 using glue. For example, in one embodiment, the support layer 11 is an EVA (Ethylene Vinyl Acetate Copolymer) layer, which has a certain degree of rigidity and toughness and can effectively support the diaphragm 1. A metal layer such as aluminum foil is placed on the EVA layer. Glue is typically applied to the EVA layer, and then the aluminum foil layer is bonded to the surface of the EVA layer. The surface of the aluminum foil layer forms the conductive circuit 12, and when power is applied to the conductive circuit 12, the entire diaphragm 1 vibrates. This application does not specifically limit the specific material of the diaphragm 1 support layer 11. For example, the materials of the support layer 11 include, but are not limited to, plastic sheets, thin wood sheets, carbon fiber sheets, cardboard, metal sheets, polymer sheets, composite materials, etc. In addition, the support layer 11 can also be made of lightweight insulating materials, such as nylon mesh covered with an adhesive layer, thin rubber, thin silicone, polymer glue layers, fiber cloth, double-sided tape, etc. In addition, the material of the metal film includes but is not limited to: aluminum, gold, silver, aluminum-magnesium alloy, copper, etc.

[0051] Furthermore, the conductive circuit 12 can be provided on one surface of the support layer 11, or on both the front and back surfaces of the support layer 11. Furthermore, the front and / or back surfaces of the support layer 11 can be provided with multiple layers of conductive circuit 12, with each layer of conductive circuit 12 being insulated and bonded together. In a specific embodiment, a layer of conductive circuit 12 is provided on each of the front and back surfaces of the support layer 11, and the conductive circuit 12 on the front and back surfaces have the same shape. The conductive circuit 12 on the front and back surfaces are arranged in opposite directions, and the conductive circuit 12 on the front and back surfaces can be connected in series or in parallel with the conductive circuit 12 on the back surface. Alternatively, the two circuits can be independent of each other and powered by different audio current output devices. However, it is necessary to ensure that when the current passes through different conductive circuits 12 around the same magnetic unit projection, the current direction in the conductive circuits 12 on the front and back sides of the support layer 11 must be consistent, that is, simultaneously clockwise or simultaneously counterclockwise, with the magnetic unit projection as the center. This is to ensure that the force direction of each part of the circuit is consistent, and the vibration of the entire diaphragm 1 will be more stable. Furthermore, in another specific embodiment, two layers of conductive circuits 12 are provided on the front and back sides of the support layer 11. The two layers of conductive circuits 12 on the same side of the support layer 11 are insulated and glued together. The two layers of circuits can be connected in series or in parallel by welding. The conductive circuits on both sides of the support layer 11 also follow the principle of consistent current direction around the same magnetic unit projection.

[0052] In one embodiment provided in the present application, the conductive circuit 12 can be directly bonded to the support layer 11, or a metal film can be pasted and covered on the surface of the support layer 11, and then the conductive circuit 12 is formed on the metal film by etching or laser engraving, and the conductive circuit 12 is insulated from the metal film in other areas. When the conductive circuit 12 is provided on both the front and back surfaces of the support layer 11, the other areas on the front and back surfaces of the support layer 11 corresponding to the areas outside the areas where the conductive circuit 12 is located are respectively covered with metal films, and the metal films are insulated from the conductive circuit 12. Covering the area of ​​the support layer 11 without the conductive circuit 12 with a metal film can not only improve the structural strength of the diaphragm 1, but also facilitate the processing and manufacturing of the diaphragm 1.

[0053] Furthermore, in one embodiment provided in the present application, the metal film on the front surface of the support layer 11 is bent from the edge of the support layer 11 and extends to the back surface of the support layer 11. Specifically, when the metal film and the conductive circuit 12 are provided on both the front and back surfaces of the support layer 11, a complete metal film can be folded in half and then adhered to the front and back surfaces of the support layer 11 respectively. For example, see Figure 6 The dotted line in the figure represents the fold line of the metal film. For each of the above technical solutions, the conductive circuit 12 can be first processed on the metal film and then bonded to the support layer 11, or the metal film can be first bonded to the support layer 11 and then the conductive circuit 12 can be processed. Processing methods for the conductive circuit 12 include, but are not limited to, etching, machining, laser engraving, etc.

[0054] It should be noted that the conductive circuit 12 on the front side of the supporting layer 11 and the conductive circuit 12 on the back side are not mirror-symmetrical based on the fold line. The conductive circuit 12 on the front side of the supporting layer 11 and the conductive circuit 12 on the back side are arranged so that the conductive circuit 12 on the front side rotates 180° with the longitudinal symmetry axis of the diaphragm 1 as the rotation axis to obtain the conductive circuit 12 on the back side.

[0055] See also Figure 7 In one embodiment provided in the present application, the diaphragm 1 further includes a rib structure 6, such as Figure 7As shown by the dotted lines in the figure, the force reinforcement structure 6 includes transverse force reinforcements 61. The force reinforcement structure 6 is provided in the support layer 11. For example, the force reinforcement structure 6 is located in the structure of the support layer 11, similar to the skeleton of the support layer 11, thereby enhancing the toughness and rigidity of the support layer 11. Alternatively, the force reinforcement structure 6 is bonded to the front or back surface of the support layer 11. Before bonding the metal film to the support layer 11, the force reinforcement structure 6 is first bonded to the surface of the support layer 11, and then the metal film is bonded thereon. The force reinforcement structure 6 includes but is not limited to: carbon fiber tubes, plastic tubes, wooden rods, metal wires, etc., or composite materials folded into a certain anti-bending structure. The cross-section of the anti-bending structure includes but is not limited to: T-shaped, triangular, semicircular, etc. In a specific embodiment, the transverse force reinforcement 61 is correspondingly provided in the gaps between the projection images of different magnet units. The force reinforcement structure 6 mentioned above can be provided in the support layer 11. Of course, the force reinforcement structure 6 can also be bonded to the surface of the diaphragm 1. In this case, the force reinforcement structure 6 can be considered as a convex rib on the diaphragm 1. Providing the transverse force ribs 61 in the gaps between the projections of different magnet units can effectively prevent the convex ribs from affecting the amplitude of the diaphragm.

[0056] In one embodiment of the present application, a loudspeaker assembly is further provided. The loudspeaker assembly includes: a magnetic system and a diaphragm 1 with opposite polarities. The magnetic system includes a plurality of magnet groups 2 with opposite polarities. Each magnet group 2 includes two magnet pairs, for example Figure 1 The first magnet pair 21 and the second magnet pair 22 in the embodiment of the present invention each magnet pair comprises two magnet units 4 with the same poles arranged opposite to each other. Each magnet pair can also be considered as a pair of magnet units. Figure 1 In the direction of the middle arrow X, different magnet pairs are spaced apart and have opposite magnetic poles. The diaphragm 1 is located in the opposing gap 10 between multiple pairs of magnet units 4, which can be considered as Figure 1 The middle arrow Y direction is the width direction of the opposing gap, and the width direction of the diaphragm 1 is perpendicular to the width direction of the opposing gap 10. Figure 1 In the direction of the middle arrow Z, multiple magnet groups 2 are arranged at intervals, and the magnetic poles of adjacent magnet groups are in opposite directions.

[0057] Furthermore, the speaker assembly includes a bracket on which the plurality of magnet units 4 are mounted. This bracket can be understood as being used to maintain the fixed positions of the plurality of magnet units 4. The diaphragm 1 must always be located within the opposing gap 10 during vibration. The speaker assembly also includes an elastic suspension assembly, one end of which is connected to the diaphragm 1 and the other end to the bracket.

[0058] In another embodiment of the present application, a speaker device is provided. The speaker device includes: a sound box body and at least one of the above-mentioned speaker assemblies, wherein the speaker assembly is disposed on the sound box body. The sound box body is provided with a storage space, and the speaker assembly is connected to the storage space. Sound waves emitted by the speaker assembly can be transmitted through the opening of the storage space. The sound box body can be provided with one speaker assembly or multiple speaker assemblies. The multiple speaker assemblies can be connected in series, in parallel, or each using its own circuit. It can be understood that different conductive circuits 12 are connected to different audio current output devices.

[0059] In summary, the technical solutions provided in the embodiments of this application effectively improve the efficiency of the conductive circuit in utilizing the magnetic field by sequentially surrounding multiple areas around the center of each magnet unit projection. Furthermore, optimizing the structure of the conductive circuit on the diaphragm effectively reduces the total harmonic distortion of the speaker.

[0060] 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 diaphragm, characterized in that: Applicable to a magnetic system having a plurality of magnet groups, wherein the plurality of magnet groups are arranged at intervals, and the magnetic poles of adjacent magnet groups are opposite; each magnet group comprises at least two magnet pairs, and different magnet pairs are arranged at intervals and have opposite magnetic poles; each magnet pair comprises two magnet units with the same poles arranged opposite to each other; An opposing gap is provided between the magnet units arranged opposite to each other with the same poles, and the diaphragm is provided in the opposing gap; The diaphragm includes: Support layer; at least one conductive circuit disposed on the support layer; Wherein, based on the projection of the magnetic unit on the supporting layer, the track of the conductive circuit sequentially surrounds the center periphery of the projection of each magnetic unit by at least 90 degrees.

2. The diaphragm according to claim 1, wherein When the track of the conductive circuit sequentially circles the periphery of the center of the projection of one of the magnetic units multiple times, the width or cross-sectional area of ​​the conductive circuit at different circle times is different; Alternatively, the width or cross-sectional area of ​​the conductive circuit is different on different areas of the diaphragm.

3. The diaphragm according to claim 1, wherein Along the length direction of the diaphragm, the conductive circuit is in an S-shaped structure that surrounds and passes through the projections of multiple magnetic units in sequence. For the projections of adjacent different magnetic units, the conductive circuit has different directions of winding around the periphery of the corresponding magnetic unit projections; when current is input into the conductive circuit, the current has different directions of winding around the periphery of the projections of adjacent different magnetic units.

4. The diaphragm according to any one of claims 1 to 3, characterized in that: The conductive circuit is provided on both the front and back surfaces of the support layer, and the conductive circuit on the front surface has the same shape as the conductive circuit on the back surface; The conductive circuit on the front side is arranged in the opposite direction to the conductive circuit on the back side.

5. The diaphragm according to claim 4, characterized in that Multiple layers of the conductive circuit are arranged on the front and / or back surface of the support layer.

6. The diaphragm according to claim 5, characterized in that The conductive circuit on the front surface is connected in series or in parallel with the conductive circuit on the back surface; Alternatively, the conductive circuit on the front surface of the supporting layer is independent of the conductive circuit on the back surface of the supporting layer.

7. The diaphragm according to claim 6, characterized in that The front and back surfaces of the support layer and other areas corresponding to the area where the conductive circuit is located are respectively covered with metal films, and the metal films and the conductive circuit are insulated from each other.

8. The diaphragm according to claim 7, characterized in that The metal film on the front surface of the support layer is bent from the edge of the support layer to extend to the back surface of the support layer; Alternatively, the metal film is coated and adhered to the front and back surfaces of the support layer respectively.

9. The diaphragm according to claim 4, characterized in that It also includes a reinforcement structure, wherein the reinforcement structure is connected to the support layer; The reinforcement structure includes transverse reinforcements.

10. The diaphragm according to claim 9, characterized in that The force rib structure is arranged in the supporting layer; or, the force rib structure is bonded to the front and / or back surface of the supporting layer; or, the force rib structure is bonded to the front and / or back surface of the diaphragm.

11. A speaker assembly, characterized in that: include: A plurality of magnet groups, wherein the plurality of magnet groups are arranged at intervals, and the magnetic poles of adjacent magnet groups are opposite; each magnet group includes two magnet pairs, and different magnet pairs are arranged at intervals and have opposite magnetic poles; each magnet pair includes two magnet units with the same poles arranged opposite to each other; The diaphragm according to any one of claims 1 to 10; There is an opposing gap between the magnet units that are arranged with the same poles, and the diaphragm is arranged in the opposing gap.

12. A speaker device, characterized in that: include: An acoustic body and at least one speaker assembly according to claim 11; The speaker assembly is arranged on the sound body.

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