A loudspeaker

Abstract

The utility model provides a kind of loudspeaker, belong to acoustics field, including vibration system and magnetic circuit system, the magnetic circuit system includes basin frame and magnetic steel, the vibration system includes planar voice coil, positioning support piece, skeleton, diaphragm, ball top;The voice coil lead winding direction of the planar voice coil is vertically arranged with the plane direction of the diaphragm, positioning support piece is equipped with clamping groove;The planar voice coil is inserted in the clamping groove;Basin frame is integrally stamped into shape, improve the overall rigidity and deformation resistance of the basin frame, especially suitable for high-power or high-vibration environment under the loudspeaker application;This clamping groove type structure can make glue better fix the planar voice coil and positioning support piece, and the firmness is better;The above-mentioned new type can improve the concentricity and consistency of magnetic circuit system, and can enhance the magnetic conductivity, to improve the overall acoustic performance of loudspeaker, and can improve the reliability of the positioning support piece and the voice coil bonding.

Description

Technical Field

[0001] This utility model relates to a loudspeaker. Background Technology

[0002] As audio equipment evolves towards miniaturization and high performance, the sound quality of loudspeakers, as the core sound-producing component, is closely related to their structural design. In traditional loudspeakers, the magnetic circuit system is the key component driving the voice coil, and its performance directly affects critical indicators such as the loudspeaker's sensitivity, distortion rate, and frequency response. Existing loudspeakers generally employ a magnetic circuit system composed of magnets, pole pieces (magnetic plates), and a frame. The frame, typically made of stamped metal, supports the magnets and pole pieces, forming a closed magnetic circuit.

[0003] Existing technical solutions: (a) Traditional magnetic circuit structures are mostly simple segmented designs, which have the following problems: ① Magnetic circuit eccentricity problem: Due to insufficient processing precision of the frame or assembly error, the air gap between the pole piece and the voice coil is uneven, causing the magnetic circuit to deviate from the center, affecting the uniformity of the force on the voice coil in the magnetic field, thus introducing nonlinear distortion; ② Uneven magnetic flux distribution: Traditional basket frames do not optimize the magnetic circuit path, which easily leads to magnetic leakage and reduces magnetic efficiency; ③ It is difficult to balance structural strength and magnetic conductivity: Although ordinary metal baskets have a certain rigidity, their magnetic conductivity is limited by the material thickness and shape design, making it impossible to achieve efficient magnetic flux guidance.

[0004] (ii) The use of an FPC positioning support structure ensures linear motion of the voice coil during operation. Currently, the conventional methods for bonding the centering FPC and voice coil in loudspeakers are: bonding the FPC to the lower or upper part of the voice coil end face and bonding the FPC to the side wall of the voice coil. This bonding method is inconvenient during assembly, occupies limited vibration space, and carries the risk of the FPC and voice coil detaching in case of reliability issues. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the above-mentioned traditional technology and provide a loudspeaker.

[0006] The purpose of this utility model is achieved through the following technical measures: a loudspeaker, comprising a vibration system and a magnetic circuit system, wherein the magnetic circuit system comprises a frame and a magnet, and the vibration system comprises a planar voice coil, a positioning support, a frame, a diaphragm, and a dome; one end of the positioning support is fixedly connected to the planar voice coil, and the other end of the positioning support is fixedly connected to the frame, characterized in that: the winding direction of the voice coil lead of the planar voice coil is vertically arranged with respect to the plane of the diaphragm, and the positioning support is provided with a slot; the planar voice coil is inserted into the slot, and the width of the slot is adapted to the thickness of the planar voice coil.

[0007] As an improvement, one end of the planar voice coil is connected to the diaphragm via the skeleton, and the other end of the planar voice coil extends into the magnetic gap of the magnetic circuit system.

[0008] As a further improvement, two planar voice coils are provided, including a first planar voice coil and a second planar voice coil arranged parallel to the first planar voice coil.

[0009] As a further improvement, the basin stand includes a basin stand body, and the basin stand body is further provided with a central magnetic plate, which is located at the center of the basin stand body.

[0010] As a further improvement, a side magnetic plate is also provided on the inner side wall of the basin frame body, and the thickness center of the side magnetic plate and the thickness center of the center magnetic plate are located on the same horizontal plane.

[0011] As a further improvement, the basin frame body, the side magnetic plate, and the center magnetic plate are integrally formed to constitute the basin frame.

[0012] As a further improvement, the magnet includes a central magnet and side magnets, the side magnets being arranged around the central magnet, wherein a side magnet is correspondingly provided below the side magnetic guide plate, and the lower surface area of ​​the side magnetic guide plate is not less than the upper surface area of ​​the side magnet; a central magnet is correspondingly provided below the central magnetic guide plate, and the lower surface area of ​​the central magnetic guide plate is not less than the upper surface area of ​​the central magnet.

[0013] As a further improvement, the edge magnet includes at least two stacked sub-edge magnets, with an edge plate between each pair of adjacent sub-edge magnets.

[0014] As a further improvement, the central magnet includes at least two stacked sub-central magnets, with a central pole plate between each pair of adjacent central magnets.

[0015] As a further improvement, a connecting boss extends from the skeleton and connects to the planar voice coil, the width of the connecting boss being less than or equal to the wall thickness of the planar voice coil.

[0016] Due to the adoption of the above technical solution, the advantages of this utility model compared with the prior art are: First: Higher magnetic circuit concentricity: The thickness centers of the central magnetic plate and the side magnetic plate are located on the same horizontal plane, so that the axis of the central magnetic plate and the side magnetic plate are aligned, ensuring that the magnetic gap remains uniform throughout the circumference and avoiding uneven force on the voice coil due to eccentricity; Second: Superior magnetic flux guiding effect: A side magnet is provided below the side magnetic plate, and the side magnet includes multiple stacked sub-side magnets. A side pole plate is provided between each two adjacent sub-side magnets. A central magnet is provided below the central magnetic plate, and the central magnet includes multiple stacked sub-central magnets. A central pole plate is provided between each two adjacent central magnets. The dual structure of the magnetic plate and pole plate can effectively reduce the magnetic resistance of the magnets, improve the magnetic efficiency, and suppress magnetic leakage. Third: Enhanced structural stability: The integrated stamping of the frame improves the overall rigidity and deformation resistance of the frame, making it particularly suitable for loudspeaker applications in high-power or high-vibration environments; Fourth: The positioning support piece has a more stable bonding method: The positioning support piece is provided with a slot. This slot structure can better fix the glue to the planar voice coil and the positioning support piece, resulting in better firmness. Fifth: Easy to mass-produce: The die stamping process is mature and low-cost, making it suitable for mass production on automated production lines; the frame can also serve as a mounting base for subsequent components such as electrodes and magnets, simplifying the assembly process and improving assembly accuracy. In summary, this new invention can improve the concentricity and consistency of the magnetic circuit system, enhance the magnetic conductivity, thereby improving the overall acoustic performance of the loudspeaker, and also improve the reliability of the bonding between the positioning support and the voice coil.

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Appendix Figure 1 This is a schematic diagram of the structure of this novel invention; Appendix Figure 2 This is a partial structural schematic diagram of the present invention; Appendix Figure 3 This is a schematic diagram of the exploded structure of this novel invention; Appendix Figure 4 This is a schematic diagram of a cross-sectional structure of this novel invention; Appendix Figure 5 This is a schematic diagram of another structural cross-section of this novel invention; Appendix Figure 6 This is a schematic diagram of the basin frame structure described in this invention; Appendix Figure 7 This is a schematic diagram of the positioning support structure of the present invention. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Example: As attached Figure 1 -Appendix Figure 7 As shown, a loudspeaker includes a vibration system 1 and a magnetic circuit system 2. The magnetic circuit system 2 includes a frame 21 and a magnet 22. The vibration system 1 includes a planar voice coil 11, a positioning support 3, a frame 12, a diaphragm 13, and a dome 14.

[0024] The frame 12 is made of aluminum or other lightweight and strong materials. A connecting boss 121 extends from the frame 12 and is connected to the planar voice coil 11. The width of the connecting boss 121 is less than or equal to the wall thickness of the planar voice coil 11. The upper long side of the planar voice coil 11 is respectively attached to the connecting boss 121 of the frame 12. The frame 12 is then bonded together with the diaphragm 13, and together with the dome 14, they form the vibration system 1.

[0025] One end of the positioning support 3 is fixedly connected to the planar voice coil 11, and the other end of the positioning support 3 is fixedly connected to the frame 21. The winding direction of the voice coil lead of the planar voice coil 11 is vertically arranged with respect to the plane of the diaphragm 13. The positioning support 3 is provided with a slot 31; the planar voice coil 11 is inserted into the slot 31, and the width of the slot 31 is adapted to the thickness of the planar voice coil 11.

[0026] Two planar voice coils 11 are provided. The planar voice coil 11 includes a first planar voice coil 111 and a second planar voice coil 112 arranged parallel to the first planar voice coil 111. Of course, there can also be one planar voice coil 11. When there is only one, the shape can be set to a ring or other suitable shape.

[0027] One end of the planar voice coil 11 is connected to the diaphragm 13 via the skeleton 12, and the other end of the planar voice coil 11 extends into the magnetic gap of the magnetic circuit system 2. The planar voice coil 11 is placed vertically in the slot 31. Adhesive is applied to both sides of the slot 31, allowing the adhesive to connect through the gap between the slot 31 and the planar voice coil 11, thus bonding them together. This slot-type structure allows the adhesive to better secure the connection between the planar voice coil 11 and the positioning support 3, resulting in better stability. During design, an appropriate gap needs to be maintained between the slot 31 and the planar voice coil 11, depending on its thickness, to prevent the gap from being too small (making it impossible for the planar voice coil 11 to fit) or too large (causing adhesive leakage during double-sided application). The position of the planar voice coil 11 can be adjusted vertically as needed, ensuring that its upper and lower long sides are located within the magnetic gap of the magnetic circuit system 2.

[0028] The basket frame 21 includes a basket frame body 211. A side magnetic guide plate 212 is provided on the inner side wall of the basket frame body 211. A central magnetic guide plate 213 is also provided on the basket frame body 211. The central magnetic guide plate 213 is located at the center of the basket frame body 211, forming a main magnetic flux channel from the magnet to the area where the planar voice coil 11 is located. Its main function is to guide the edge magnetic flux and enhance the sealing of the overall magnetic circuit. The side magnetic guide plate 212 and the central magnetic guide plate 213 on the basket frame 21 replace some of the pole plates in the original structure, which greatly simplifies the process flow.

[0029] The thickness center of the side magnetic plate 212 and the thickness center of the center magnetic plate 213 are located on the same horizontal plane, ensuring that the magnetic gap remains uniform throughout the circumference and avoiding uneven force on the planar voice coil 11 due to eccentricity.

[0030] The basin frame 21 is integrally formed by the basin frame body 211, the side magnetic plate 212 and the center magnetic plate 213, which can ensure the high consistency of the two in terms of geometric dimensions, relative position and flatness. The double magnetic plate structure can effectively reduce magnetic resistance, improve magnetic efficiency and suppress magnetic leakage.

[0031] The magnet 22 includes a central magnet 222 and side magnets 221. The side magnets 221 are arranged around the central magnet 222. A side magnet 221 is correspondingly located below the side magnetic guide plate, and the lower surface area of ​​the side magnetic guide plate is not less than the upper surface area of ​​the side magnet 221. A central magnet 222 is correspondingly located below the central magnetic guide plate, and the lower surface area of ​​the central magnetic guide plate is not less than the upper surface area of ​​the central magnet 222. (See attached diagram.) Figure 5 As shown.

[0032] To improve sensitivity, the edge magnet 221 includes two stacked sub-edge magnets 223, with an edge pole plate 231 between adjacent sub-edge magnets. The center magnet 222 includes two stacked sub-center magnets 224, with a center pole plate 232 between each adjacent center magnet, thus forming a dual magnetic circuit system with upper and lower magnetic circuits, as shown in the attached figure. Figure 4 As shown.

[0033] Of course, the edge magnet 221 may also include three or more stacked sub-center magnets, with an edge pole plate between two adjacent sub-edge magnets. The center magnet 222 may also include three or more stacked sub-center magnets, with a center pole plate between each pair of adjacent center magnets, thus forming a multi-magnetic circuit system.

[0034] Working principle and advantages: When the magnet 22 is mounted on the frame 21, the magnetic flux starts from the magnet 22, enters the region of the planar voice coil 11 through the central magnetic guide plate 213, and then returns to the magnet 22 through the side magnetic guide plate 212, forming a closed magnetic circuit. Since the side magnetic guide plate 212 and the central magnetic guide plate 213 are stamped in the same mold, there is no assembly error between them, achieving the following advantages: Higher magnetic circuit concentricity: The thickness center of the side magnetic plate 212 and the thickness center of the center magnetic plate 213 are located on the same horizontal plane, so that the axis of the center magnetic plate 213 and the side magnetic plate 213 are aligned, ensuring that the magnetic gap remains uniform throughout the circumference and avoiding uneven force on the voice coil 11 due to eccentricity. Superior magnetic flux guiding effect: A side magnet 221 is provided below the side magnetic plate 213. The side magnet 221 includes two or more stacked sub-side magnets 223. A side pole plate 231 is provided between each two adjacent sub-side magnets 223. A central magnet 222 is provided below the central magnetic plate 213. The central magnet 222 includes two or more stacked sub-central magnets 224. A central pole plate 232 is provided between each two adjacent central magnets 224. The dual arrangement of the magnetic plate and the pole plate in the above structure can effectively reduce the magnetic resistance of the magnets, improve the magnetic efficiency, and suppress magnetic leakage. Enhanced structural stability: The frame body 211, the side magnetic plate 212, and the center magnetic plate 213 are integrally stamped to form the frame 21, which improves the overall rigidity and deformation resistance of the frame 21, making it particularly suitable for loudspeaker applications in high-power or high-vibration environments. The bonding method between the positioning support plate and the voice coil is more stable: the positioning support plate 3 is provided with a slot 313. This slot structure can better fix the glue to the planar voice coil 11 and the positioning support plate 3, resulting in better firmness. Easy to mass-produce: The die stamping process is mature, low-cost, and suitable for mass production on automated production lines.

[0035] In addition, the basin frame 21 can also serve as a mounting base for subsequent components (such as electrodes and magnets), simplifying the assembly process and improving assembly accuracy.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A loudspeaker, comprising a vibration system and a magnetic circuit system, the magnetic circuit system comprising a frame and a magnet, the vibration system comprising a planar voice coil, a positioning support, a frame, a diaphragm, and a dome; one end of the positioning support is fixedly connected to the planar voice coil, and the other end of the positioning support is fixedly connected to the frame, characterized in that: The winding direction of the voice coil lead of the planar voice coil is vertically arranged with respect to the plane of the diaphragm, and the positioning support is provided with a slot; the planar voice coil is inserted into the slot, and the width of the slot is adapted to the thickness of the planar voice coil.

2. A loudspeaker according to claim 1, characterized in that: One end of the planar voice coil is connected to the diaphragm through the skeleton, and the other end of the planar voice coil extends into the magnetic gap of the magnetic circuit system.

3. A loudspeaker according to claim 2, characterized in that: Two planar voice coils are provided, including a first planar voice coil and a second planar voice coil arranged parallel to the first planar voice coil.

4. A loudspeaker according to claim 1, characterized in that: The basin stand includes a basin stand body, and the basin stand body is further provided with a central magnetic plate, which is located at the center of the basin stand body.

5. A loudspeaker according to claim 4, characterized in that: The inner wall of the basin frame is also provided with a side magnetic plate, and the thickness center of the side magnetic plate and the thickness center of the center magnetic plate are located on the same horizontal plane.

6. A loudspeaker according to claim 5, characterized in that: The basin frame body, the side magnetic plate, and the central magnetic plate are integrally formed to constitute the basin frame.

7. A loudspeaker according to claim 6, characterized in that: The magnets include a central magnet and side magnets, with the side magnets arranged around the central magnet. A side magnet is provided below the side magnetic guide plate, and the lower surface area of ​​the side magnetic guide plate is not less than the upper surface area of ​​the side magnet. A central magnet is provided below the central magnetic guide plate, and the lower surface area of ​​the central magnetic guide plate is not less than the upper surface area of ​​the central magnet.

8. A loudspeaker according to claim 7, characterized in that: The edge magnet includes at least two stacked sub-edge magnets, and an edge plate is provided between each two adjacent sub-edge magnets.

9. A loudspeaker according to claim 7, characterized in that: The central magnet includes at least two stacked sub-central magnets, and a central pole plate is provided between each pair of adjacent central magnets.

10. A loudspeaker according to claim 2, characterized in that: The skeleton extends with a connecting boss that connects to the planar voice coil, and the width of the connecting boss is less than or equal to the wall thickness of the planar voice coil.

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