Novel double-layer planar vibrating diaphragm

Abstract

The utility model relates to the technical field of loudspeaker diaphragms, in particular to a novel double-layer planar diaphragm, which comprises a diaphragm and conductive coils arranged on two sides, the conductive coils are arranged in a rectangular shape, two ends of each conductive coil are transited by circular arcs, and the outer edge of the diaphragm is surrounded by a fixed support. One end of the fixing support is provided with a welding spot used for being connected with the conductive coil. Compared with a traditional circular wiring mode and a rectangular wiring mode, stress points are increased, so that the plane diaphragm is more stable in the assembly process, the assembly difficulty is reduced, and the space utilization rate of the earphone is improved. Meanwhile, the rectangular wiring and arc transition mode also enables the plane diaphragm to be stressed more uniformly during vibration, thereby improving the tone quality performance, meeting higher acoustic performance and stability requirements, and better adapting to a specific installation environment or acoustic requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeaker diaphragms, in particular to a novel double-layer plane diaphragm. Background Art

[0002] Planar diaphragm speaker technology is a speaker sound technology. This technology integrates the voice coil and diaphragm, places the diaphragm in a magnetic field, and produces sound by driving the diaphragm to move synchronously in the magnetic field through the change of the current signal in the voice coil. This technology can be used in HiFi speaker tweeters, such as ribbon tweeters and pneumatic tweeters. Its sound quality is better than most moving iron and dynamic units, and can be comparable to moving iron and electrostatic units in clarity and resolution.

[0003] The prior art refers to a utility model patent previously applied for by the applicant, which is a single-magnetic group double-layer circuit planar diaphragm loudspeaker with publication number CN220915428U. A circular planar diaphragm is disclosed, which adopts a double-sided wiring method to solve the coil arrangement problem and significantly increase the number of coil turns, thereby improving the efficiency of the diaphragm and achieving a higher sound pressure level and acoustic efficiency of the speaker.

[0004] As HiFi headphones continue to develop towards TWS and OWS, people's personalized requirements for HiFi headphones are gradually increasing. The existing common circular contour headphones can no longer meet the needs of users, and more headphones with special shapes are gradually entering the public's field of vision. In such a specific application scenario, a circular plane diaphragm with fewer stress points is not conducive to welding and assembly, and the assembly is difficult, requires more space, and cannot be fully utilized. Therefore, the utility model provides a new double-layer planar diaphragm. Summary of the invention

[0005] The utility model provides a novel double-layer planar diaphragm, which adopts a rectangular wiring method to increase force points, reduce assembly difficulty, solve the assembly problem of the planar diaphragm, and adopts symmetrical arc structures at both ends of the coil to ensure working stability.

[0006] To solve the problems mentioned in the above background technology.

[0007] The purpose of the utility model is achieved by the following methods:

[0008] A novel double-layer planar diaphragm includes a diaphragm, wherein conductive coils connected to each other are arranged on both sides of the diaphragm, the conductive coils are arranged in a rectangular shape, and both ends of the conductive coils are transitioned by arcs, the outer edge of the diaphragm is surrounded by a fixed bracket, and one end of the fixed bracket is provided with a welding point for connecting to the conductive coil.

[0009] Furthermore, the diaphragm is connected to the fixed bracket via a hanging edge portion.

[0010] Furthermore, both ends of the hanging edge portion are provided with S-shaped lead-out grooves through which the conductive coil can pass.

[0011] Furthermore, the conductive coil is composed of a plurality of groups of sub-coils arranged at intervals, and each group of sub-coils gradually shrinks inwardly.

[0012] Beneficial effects of the utility model:

[0013] First, the rectangular wiring method increases the stress points compared to the traditional circular wiring method, making the planar diaphragm more stable during assembly and reducing the difficulty of assembly. At the same time, the rectangular wiring method also makes the planar diaphragm more evenly stressed during vibration, improving the sound quality.

[0014] Secondly, arcs are used at both ends of the conductive coil for transition. This design can effectively reduce the stress concentration caused by the sharp corners of the wire, thereby increasing the service life and working stability of the conductive coil. At the same time, the arc transition design also makes the planar diaphragm vibrate more smoothly, further improving the sound quality.

[0015] Third, by setting a fixed bracket around the outer edge of the diaphragm, the structural strength of the planar diaphragm can be significantly improved, and the welding point set at one end of the fixed bracket can be easily welded to the outside. This design not only simplifies the assembly process, but also improves the assembly accuracy and ensures the stability and reliability of the planar diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a novel double-layer planar diaphragm of the utility model;

[0017] Figure 2 This is a rear view of a novel double-layer planar diaphragm of the utility model;

[0018] Figure 3 It is an exploded schematic diagram of a novel double-layer planar diaphragm of the utility model;

[0019] The reference numerals in the figure are: 1-diaphragm, 2-conductive coil, 3-fixed bracket, 4-welding point, 5-hanging edge, 501-S-shaped lead-out groove. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] In this embodiment, refer to Figure 1-Figure 3A novel double-layer planar diaphragm is specifically implemented, including a diaphragm 1, conductive coils 2 connected to each other are arranged on both sides of the diaphragm 1, the conductive coils 2 are arranged in a rectangular shape, and both ends of the conductive coils 2 are transitioned by arcs, the outer edge of the diaphragm 1 is surrounded by a fixed bracket 3, and one end of the fixed bracket 3 is provided with a welding point 4 for connecting with the conductive coil 2.

[0022] Furthermore, the diaphragm 1 is connected to the fixed bracket 3 through the hanging edge 5. In this embodiment, the hanging edge 5 is made of elastic material, and both ends of the hanging edge 5 are provided with S-shaped lead-out grooves 501 through which the conductive coil 2 can pass. Such a design can facilitate the lead-out of the conductive coil 2, and the design of the S-shaped lead-out groove 501 can also effectively reduce the restriction on vibration, thereby reducing distortion and improving sound quality performance.

[0023] In this embodiment, the conductive coil 2 is arranged on both sides, which significantly increases the coil length and the number of windings, increases the resistance of the conductive coil 2, improves the efficiency of the speaker, and achieves a higher sound pressure level and acoustic efficiency of the speaker. One end of the conductive coil 2 on the front side of the diaphragm 1 is led outward to connect with one of the welding points 4, and the other end passes through the diaphragm 1 to connect with the conductive coil 2 on the back side. Further increasing the resistance of the conductive coil 2, ensuring the efficiency of the planar diaphragm, and making the movement of the voice coil in the magnetic field more stable, ensuring the sound quality of the diaphragm.

[0024] Furthermore, the conductive coil 2 is composed of multiple groups of sub-coils arranged at intervals, and each group of sub-coils gradually shrinks inward. Multiple groups of sub-coils gradually shrinking inward can balance the vibration amplitude of the planar diaphragm. At the same time, the interval arrangement can make the center of mass and the center of the magnetic field completely coincide, reduce the rigidity of the edge area due to the dense lead wires, ensure the compliance consistency of the edge of the vibration area, and improve the utilization rate of the magnetic field.

[0025] Beneficial effects of the utility model:

[0026] First, the rectangular wiring method increases the force points for gripping the planar diaphragm during use, compared to the traditional circular wiring method, making the planar diaphragm more stable during assembly and reducing the difficulty of assembly. At the same time, the rectangular wiring method also makes the planar diaphragm more evenly stressed during vibration, improves the sound quality, meets higher acoustic performance and stability requirements, and better adapts to specific installation environments or acoustic requirements.

[0027] Secondly, arcs are used for transition at both ends of the conductive coil 2. This design can effectively reduce the stress concentration caused by the sharp corners of the wire, thereby improving the service life and working stability of the conductive coil 2. At the same time, the arc transition design also makes the planar diaphragm vibrate more smoothly, further improving the sound quality.

[0028] Thirdly, by setting a fixing bracket 3 around the outer edge of the diaphragm 1, the structural strength of the planar diaphragm can be significantly improved, and the welding point 4 set at one end of the fixing bracket 3 can be conveniently welded to the outside. Such a design not only simplifies the assembly process, but also improves the assembly accuracy, ensuring the stability and reliability of the planar diaphragm.

[0029] In summary, the new double-layer planar diaphragm provided by the utility model has the advantages of low assembly difficulty, high working stability, good sound quality, etc., and is particularly suitable for application scenarios with high requirements on sound quality, such as HiFi headphones or professional audio systems.

[0030] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A novel double-layer planar diaphragm, comprising a diaphragm (1), wherein both sides of the diaphragm (1) are provided with interconnected conductive coils (2), characterized in that: The conductive coil (2) is arranged in a rectangular shape, and both ends of the conductive coil (2) are transitioned by arcs. The outer edge of the diaphragm (1) is surrounded by a fixed bracket (3), and one end of the fixed bracket (3) is provided with a welding point (4) for connecting to the conductive coil (2).

2. According to claim 1, the novel double-layer planar diaphragm is characterized in that: The diaphragm (1) is connected to the fixed bracket (3) via a hanging edge portion (5).

3. According to claim 2, the novel double-layer planar diaphragm is characterized in that: Both ends of the hanging edge portion (5) are provided with S-shaped lead-out grooves (501) through which the conductive coil (2) can pass.

4. According to claim 1, the novel double-layer planar diaphragm is characterized in that: The conductive coil (2) is composed of a plurality of groups of sub-coils arranged at intervals, and each group of sub-coils gradually shrinks inwardly.

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