Double-circle magnetic single-face damping horn structure

Abstract

This utility model discloses a dual-circular-magnet single-sided vibration-damping speaker structure, comprising a diaphragm, voice coil, frame, and magnetic circuit arranged sequentially from bottom to top. The dual-circular-magnet single-sided vibration-damping speaker structure also includes an integrated damping spring. The magnetic circuit includes a magnetic cup, a magnet assembly, and an electrode assembly. The magnet assembly and electrode assembly are located below the magnetic cup. The magnetic cup includes a magnetic cup body and a magnetic cup top plate. The magnetic cup top plate is located in the middle of the upper surface of the magnetic cup body. The middle part of the integrated damping spring is fitted onto the magnetic cup top plate. The integrated damping spring and magnetic cup are positioned by external tooling and assembled and fixed using laser spot welding. The dual-circular-magnet single-sided vibration-damping speaker structure also includes two welding plates pre-embedded in the frame. This speaker structure, by pre-embedding welding plates in the frame and using laser spot welding to weld and fix the integrated damping spring to the frame, has the advantages of high efficiency and high reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of horn structures, and in particular to a double-circular-magnet single-sided vibration-damping horn structure. Background Technology

[0002] See Figure 1 and Figure 2 Currently, the existing dual-circular-magnet single-sided vibration-damping speaker structure on the market typically includes a diaphragm (a), a voice coil (b), a frame (c), a magnetic circuit (d), and two damping springs (e). During actual assembly, the operator first manually or semi-automatically applies AB glue to a specific bonding area of ​​the magnetic circuit (d). Then, the two damping springs (e) are precisely aligned and pressed onto the glued magnetic circuit (d). This step requires waiting for the glue to initially cure to ensure that the magnetic circuit (d) and the two damping springs (e) are firmly bonded together as a sub-assembly. Finally, the bonded sub-assembly is passed through the damping springs (e). The pre-designed spring positioning hole f is mechanically positioned with the corresponding frame positioning post g on the frame c. Finally, after accurate positioning, the main fixing method still relies on glue (usually AB glue is used again). The operator needs to apply glue a second time to the mating surface of the damping spring e and the frame c. The glue needs to go through a curing cycle again before the two damping springs e can be firmly bonded to the frame c, thus completing the mechanical connection of the entire speaker. Obviously, this assembly method has serious technical problems of slow glue application efficiency and poor reliability. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the existing technology, a double circular magnetic single-sided vibration damping horn structure is provided. By pre-embedding welding pieces in the basin frame and using laser spot welding process, the integrated vibration damping spring is welded and fixed to the basin frame, which has the advantages of high efficiency and high reliability.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a double-circular magnet single-sided vibration-damping speaker structure, including a diaphragm, voice coil, frame, and magnetic circuit arranged sequentially from bottom to top. The double-circular magnet single-sided vibration-damping speaker structure also includes an integrated vibration-damping spring. The magnetic circuit includes a magnetic cup, a magnet assembly, and an electrode assembly. The magnet assembly and the electrode assembly are located below the magnetic cup. The magnetic cup includes a magnetic cup body and a magnetic cup top plate. The magnetic cup top plate is located in the middle of the upper surface of the magnetic cup body. The middle part of the integrated vibration-damping spring is clamped onto the magnetic cup top plate. The integrated vibration-damping spring and the magnetic cup are positioned by external tooling and assembled and fixed by laser spot welding. The double-circular magnet single-sided vibration-damping speaker structure also includes two welding pieces pre-embedded in the frame. After the integrated vibration-damping spring is assembled onto the frame, the two welding pieces are melted by laser spot welding to achieve welding and fixing of the integrated vibration-damping spring and the frame.

[0005] To be further specific, the thickness of the magnetic cup top plate is the same as the thickness of the integrated damping spring.

[0006] To be further specific, the magnetic bowl body and the magnetic bowl top plate are integrally formed structures.

[0007] More specifically, the magnet assembly includes an annular magnet and a central magnet, the pole plate assembly includes an annular pole plate and a central pole plate, both the annular magnet and the central magnet are disposed on the lower surface of the magnetic cup, the central magnet is located in the middle of the annular magnet, the annular pole plate is coaxially disposed at the lower end of the annular magnet, and the central pole plate is coaxially disposed at the lower end of the central magnet.

[0008] The beneficial effects of this utility model are as follows: The double-circular magnetic single-sided vibration damping horn structure of this utility model, by pre-embedding welding plates in the basin frame and using laser spot welding technology, welds and fixes the integrated vibration damping spring to the basin frame, which has the advantages of high efficiency and high reliability, and solves the problems of poor strength and low efficiency of traditional glue fixation; by setting the magnetic bowl top plate in the middle of the upper surface of the magnetic bowl body, this design facilitates the installation of the integrated vibration damping spring; by changing the traditional double-sided double spring to an integrated vibration damping spring, it is easier to produce and reduces material and assembly costs. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of an existing double-circular-magnet single-sided vibration-damping horn structure;

[0011] Figure 2 yes Figure 1 A schematic diagram of its decomposed structure.

[0012] Figures 1-2 The labels in the text are: a) diaphragm; b) voice coil; c) frame; d) magnetic circuit; e) damping spring; f) spring positioning hole; g) frame positioning post;

[0013] Figure 3 This is a schematic diagram of the double-circular magnetic single-sided vibration-damping horn structure of this utility model. Figure 1 ;

[0014] Figure 4 This is a schematic diagram of the double-circular magnetic single-sided vibration-damping horn structure of this utility model. Figure 2 ;

[0015] Figure 5 This is a schematic diagram of the double-circular magnetic single-sided vibration-damping horn structure of this utility model. Figure 3 ;

[0016] Figure 6 This is a schematic diagram of the double-circular magnetic single-sided vibration-damping horn structure of this utility model. Figure 4 .

[0017] Figures 3-6 The following components are labeled: 1. Diaphragm; 2. Voice coil; 3. Basket; 4. Magnetic circuit; 41. Magnetic cup; 411. Magnetic cup body; 412. Magnetic cup top plate; 42. Annular magnet; 43. Center magnet; 44. Annular pole plate; 45. Center pole plate; 5. Integrated damping spring; 6. Welding sheet. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] like Figure 3 , Figure 4 , Figure 5 and Figure 6 This utility model discloses a dual-circular magnetic single-sided vibration-damping speaker structure, comprising a diaphragm 1, a voice coil 2, a frame 3, and a magnetic circuit 4 arranged sequentially from bottom to top. The dual-circular magnetic single-sided vibration-damping speaker structure also includes an integrated damping spring 5. The diaphragm 1 is responsible for vibrating to produce sound; the voice coil 2 is attached to the diaphragm 1 and moves in a magnetic field after being energized, driving the diaphragm 1 to vibrate; the frame 3 constitutes the skeletal structure of the speaker, providing support and a fixed foundation for other components; the magnetic circuit 4 forms a constant magnetic field that drives the voice coil 2 to move; the integrated damping spring 5 is used to flexibly connect the magnetic circuit 4 and the frame 3, effectively isolating and absorbing the transmission of vibration from the magnetic circuit 4 to the frame 3, thereby significantly suppressing the noise of the speaker structure and improving the purity of the sound quality.

[0020] The magnetic circuit 4 includes a magnetic bowl 41, a magnetic steel assembly, and an electrode assembly. The magnetic steel assembly and the electrode assembly are located below the magnetic bowl 41. The magnetic bowl 41 includes a magnetic bowl body 411 and a magnetic bowl top plate 412. The magnetic bowl top plate 412 is located in the middle of the upper surface of the magnetic bowl body 411. The middle of the integrated damping spring 5 is clamped on the magnetic bowl top plate 412. The integrated damping spring 5 and the magnetic bowl 41 are positioned by external tooling and assembled and fixed by laser spot welding. The double circular magnetic single-sided damping horn structure also includes two welding pieces 6 pre-embedded in the basin frame 3. After the integrated damping spring 5 is assembled onto the basin frame 3, the two welding pieces 6 are melted by laser spot welding to achieve welding and fixing of the integrated damping spring 5 and the basin frame 3. Laser welding is completed instantly, and the tensile strength of the weld point far exceeds that of adhesive bonding. The automated welding parameters are precise and controllable, eliminating the problem of uneven welding. Preferably, during the injection molding of the basin frame 3, two welding pieces 6 are pre-embedded inside the basin frame positioning post. The welding pieces 6 can be made of materials such as nickel alloy or stainless steel.

[0021] The thickness of the magnetic bowl top plate 412 is the same as that of the integrated vibration damping spring 5, providing a flat base surface for laser welding. The magnetic bowl body 411 and the magnetic bowl top plate 412 are integrally formed to ensure structural strength.

[0022] The magnet assembly includes annular magnet 42 and central magnet 43, and the electrode assembly includes annular electrode 44 and central electrode 45. Both annular magnet 42 and central magnet 43 are disposed on the lower surface of magnetic cup 41. The central magnet 43 is located in the middle of annular magnet 42. Annular electrode 44 is coaxially disposed at the lower end of annular magnet 42, and central electrode 45 is coaxially disposed at the lower end of central magnet 43.

[0023] This dual-circular magnet single-sided vibration-damping speaker structure uses laser spot welding to weld and fix the integrated vibration-damping spring 5 to the frame 3 by pre-embedding welding pieces 6 in the frame 3. This has the advantages of high efficiency and high reliability, solving the problems of poor strength and low efficiency of traditional glue fixation. By setting a magnetic cup top plate 412 in the middle of the upper surface of the magnetic cup body 411, this design facilitates the installation of the integrated vibration-damping spring 5. That is, the traditional equal wall thickness magnetic cup is converted into an unequal wall thickness magnetic cup, and the traditional bottom-mounted spring is converted into a top-mounted spring. This is to avoid interference of the voice coil 2 movement without changing the overall shape and height of the product. At the same time, the top-mounted spring design frees up the bottom space of the magnetic circuit 4, allowing the magnet volume to be increased and the magnetic field strength to be improved. By changing the traditional double-sided double spring to an integrated vibration-damping spring 5, it is easier to produce and reduces material and assembly costs.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A double-circular magnetic single-sided vibration-damping speaker structure, comprising a diaphragm (1), a voice coil (2), a frame (3), and a magnetic circuit (4) arranged sequentially from bottom to top, characterized in that: The dual-circular magnetic single-sided vibration damping horn structure also includes an integrated vibration damping spring (5). The magnetic circuit (4) includes a magnetic bowl (41), a magnet assembly, and an electrode assembly. The magnet assembly and the electrode assembly are located below the magnetic bowl (41). The magnetic bowl (41) includes a magnetic bowl body (411) and a magnetic bowl top plate (412). The magnetic bowl top plate (412) is located in the middle of the upper surface of the magnetic bowl body (411). The middle part of the integrated vibration damping spring (5) is fastened to... On the top plate (412) of the magnetic bowl, the integrated damping spring (5) and the magnetic bowl (41) are positioned by external tooling and assembled and fixed by laser spot welding. The double-circular magnetic single-sided damping horn structure also includes two welding pieces (6) pre-embedded in the basin frame (3). After the integrated damping spring (5) is assembled onto the basin frame (3), the two welding pieces (6) are melted by laser spot welding to achieve the welding and fixing of the integrated damping spring (5) and the basin frame (3).

2. The double-circular magnetic single-sided vibration damping horn structure according to claim 1, characterized in that: The thickness of the magnetic cup top plate (412) is the same as the thickness of the integrated damping spring (5).

3. The double-circular magnetic single-sided vibration damping horn structure according to claim 1, characterized in that: The magnetic bowl body (411) and the magnetic bowl top plate (412) are integrally formed structures.

4. The double-circular magnetic single-sided vibration damping horn structure according to claim 1, characterized in that: The magnet assembly includes an annular magnet (42) and a central magnet (43), and the pole plate assembly includes an annular pole plate (44) and a central pole plate (45). The annular magnet (42) and the central magnet (43) are both disposed on the lower surface of the magnetic cup (41). The central magnet (43) is located in the middle of the annular magnet (42). The annular pole plate (44) is coaxially disposed at the lower end of the annular magnet (42), and the central pole plate (45) is coaxially disposed at the lower end of the central magnet (43).

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