Outer edge composite membrane

Abstract

The utility model relates to the technical field of voice coil diaphragms, in particular to an outer edge composite diaphragm, which comprises a diaphragm assembly, the diaphragm assembly is arranged on a carrier shell, a magnetic circuit structure is arranged in the carrier shell, a voice coil is arranged on the carrier shell and positioned in the magnetic circuit structure, the diaphragm assembly comprises an outer edge assembly and a ball top part, and the ball top part is arranged on the outer edge assembly. One end of the voice coil is fixedly connected with the voice coil base station, and an elastic arc sheet is fixedly arranged between the voice coil base station and the outer edge assembly. According to the outer edge composite diaphragm, the secondary outer diameter part of the outer ring adopts the composite structure, the force resistance, the strength and the elasticity of the diaphragm can be improved, the force resistance of the outer edge composite diaphragm can be adjusted by the composite structure, the overall elasticity of the diaphragm can be finely adjusted, the effects of alto and high pitch are not influenced in the use process, and the service life of the diaphragm is prolonged. The bass sensitivity, the optimal resonance point of the low frequency and the dynamic width of the bass can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of voice coil diaphragms, in particular to an outer edge composite diaphragm. Background Art

[0002] Diaphragms are widely used in the electroacoustic industry, and when used in practice, the diaphragm can determine the sound quality.

[0003] In the prior art, the application number CN201910310821.8 discloses a voice coil diaphragm for a high-power speaker, wherein the voice coil diaphragm includes a diaphragm, a straight tube, and a connecting part. The diaphragm has a drum portion located at the center of the diaphragm, an elastic portion arranged around the drum portion, and a connecting portion for connecting the drum portion and the elastic portion.

[0004] However, the voice coil diaphragm mentioned in the prior art only works through the diaphragm, which cannot guarantee the realism of sound transmission. The actual vibration elasticity of the diaphragm is poor, the service life is short, and the texture and effect of sound transmission are poor. Therefore, it is necessary to design an outer edge composite diaphragm. Utility Model Content

[0005] The purpose of the utility model is to provide an outer edge composite diaphragm to solve the problems in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] An outer composite diaphragm, the outer composite diaphragm comprising a diaphragm assembly, the diaphragm assembly being mounted on a carrier housing, a magnetic circuit structure being disposed within the carrier housing, and a voice coil being mounted on the carrier housing and within the magnetic circuit structure;

[0008] The diaphragm assembly includes an outer edge assembly and a ball top, the outer side of the ball top is fixedly connected to a voice coil base, one end of the voice coil is fixedly connected to the voice coil base, and an elastic arc piece is fixed between the voice coil base and the outer edge assembly.

[0009] Furthermore, the magnetic circuit structure includes a magnetic conductive plate and a magnet fixed in the carrier shell. The magnet is fixed below the magnetic conductive plate, and the magnet is fixedly connected to the carrier shell.

[0010] Furthermore, a mounting groove is provided inside the carrier shell and outside the magnet for accommodating the voice coil.

[0011] Furthermore, the outer side of the elastic arc piece is fixedly connected to the outer edge component.

[0012] Furthermore, the elastic arc piece is provided with array-distributed patterns.

[0013] Furthermore, the diaphragm assembly includes a base layer, on which a composite layer is fixedly provided for adjusting the elasticity of the entire diaphragm.

[0014] Beneficial effects of the utility model:

[0015] 1. The overall structure of the outer composite diaphragm of the utility model is ingenious and more reasonable than the voice coil diaphragm structure of the prior art. At the same time, the composite structure is adopted at the secondary outer diameter of the outer ring, which can improve the diaphragm's force resistance, strength and elasticity;

[0016] 2. The composite diaphragm on the outer edge of the utility model has a composite structure that can adjust the force resistance of the composite diaphragm on the outer edge itself and fine-tune the overall elasticity of the diaphragm. During use, it does not affect the effects of the mid-range and treble, and can adjust the sensitivity of the bass, the optimal resonance point of the low frequency and the dynamic width of the bass. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the explosion structure of the utility model as a whole;

[0019] Figure 2 This is a schematic diagram of the structure of the diaphragm assembly of the utility model;

[0020] Figure 3 This is a schematic diagram of the explosion structure of the outer edge composite diaphragm of the utility model;

[0021] Figure 4 This utility model Figure 3 A in the middle is an enlarged structural diagram;

[0022] Figure 5 It is a schematic diagram of the explosion structure of the diaphragm assembly of the utility model. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Outer edge composite diaphragm, such as Figure 1-5As shown, the composite diaphragm includes a carrier shell 1, a magnetic conductive plate 11 is fixedly provided in the carrier shell 1, a magnet 12 is fixedly provided in the carrier shell 1, the magnet 12 is fixedly installed below the magnetic conductive plate 11, and the magnet 12 is fixedly connected to the carrier shell 1, and a mounting groove 13 is opened in the carrier shell 1, and the mounting groove 13 is located between the inner wall of the carrier shell 1 and the magnet 12, and the mounting groove 13 is an annular groove structure.

[0025] A diaphragm assembly 2 is installed on the carrier shell 1. A voice coil 21 is fixed on one side of the diaphragm assembly 2. When the outer edge composite diaphragm is installed, the voice coil 21 is arranged in the annular mounting groove 13. The voice coil 21 is located on the outside of the magnet 12 and is arranged inside the carrier shell 1.

[0026] The diaphragm assembly 2 includes an outer edge assembly 22 and a dome 25. The outer side of the dome 25 is fixedly connected to a voice coil base 24. One end of the voice coil 21 is fixed to the voice coil base 24 by adhesion. In this embodiment, the voice coil base 24 secures the dome 25 of the diaphragm to the voice coil 21, thereby improving the stability of the dome 25 of the diaphragm.

[0027] An elastic arc piece 23 is fixedly provided between the voice coil base 24 and the outer edge component 22. The elastic arc piece 23 is a ring-shaped structure, the inner side of which is fixedly connected to the outer side of the voice coil base 24, and the outer side of the elastic arc piece 23 is fixedly connected to the outer edge component 22, and the elastic arc piece 23 is provided with array-distributed patterns 26.

[0028] The connection between the elastic arc piece 23 and the outer edge component 22 is the secondary outer diameter 27 .

[0029] The diaphragm assembly 2 includes a base layer 221, on which a composite layer 222 is fixed. The composite layer 222 and the base layer 221 adopt a composite structure to adjust the force resistance of the outer edge composite diaphragm itself and fine-tune the overall elasticity of the diaphragm. During use, it has almost no effect on the effects of the mid-range and treble, and can adjust the sensitivity of the bass, the optimal resonance point of the low frequency and the dynamic width of the bass.

[0030] The composite layer 222 is composed of an annular structure and an arc surface structure, and is compositely fixed to the outside of the base layer 221 and the elastic arc sheet 23 at the secondary outer diameter 27 to enhance the overall use effect of the diaphragm and fine-tune the overall elasticity of the diaphragm.

[0031] The induced electromotive force of the diaphragm is calculated as follows:

[0032] E=BLV

[0033] Where E is the induced electric potential energy, which can represent the sensitivity of the diaphragm or microphone core;

[0034] B is the magnetic induction intensity;

[0035] L is the coil length of the voice coil;

[0036] V is determined by the volume flow rate of air through the diaphragm, which is primarily determined by the sound pressure and the modulus value of the overall impedance of the system structure.

[0037] The modulus of impedance is calculated as follows:

[0038]

[0039] Among them, |Z| is the modulus of impedance; R is the mechanical resistance, ωM is the acoustic mass reactance, For the sound of compliance and resistance.

[0040] And ω=2πf, where 2π is the circular period and f is the frequency.

[0041] In this embodiment, the membrane edge composite structure focuses on adjusting R and fine-tuning C in order to adjust the corresponding width and sensitivity of low-frequency sound.

[0042] Beneficial effects:

[0043] Compared with the diaphragms in the prior art, the outer edge composite diaphragm adopts a composite structure, wherein the magnetic circuit and the voice coil base 24 on the diaphragm are both more appropriately matched than the ordinary voice coil diaphragm structure.

[0044] The composite structure on the outside of the diaphragm can regulate the force resistance and elasticity of the diaphragm itself. Compared with the existing composite structure in the middle of the diaphragm, the structure is more ingenious. Improvements are made on the actual sound diaphragm to adjust the structure and practical effect of the sound diaphragm itself, so that the highest point or resonance point of the low-frequency sound is moved to the required frequency point.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. An outer composite diaphragm, comprising a diaphragm assembly (2), characterized in that: The diaphragm assembly (2) is mounted on a carrier housing (1), a magnetic circuit structure is provided in the carrier housing (1), and a voice coil (21) is mounted on the carrier housing (1) and located in the magnetic circuit structure; The diaphragm assembly (2) comprises an outer edge assembly (22) and a ball top (25); the outer side of the ball top (25) is fixedly connected to a voice coil base (24); one end of the voice coil (21) is fixedly connected to the voice coil base (24); and an elastic arc sheet (23) is fixedly provided between the voice coil base (24) and the outer edge assembly (22).

2. The outer edge composite diaphragm according to claim 1, characterized in that: The magnetic circuit structure comprises a magnetic conductive plate (11) and a magnet (12) fixed in a carrier shell (1); the magnet (12) is fixed below the magnetic conductive plate (11); and the magnet (12) is fixedly connected to the carrier shell (1).

3. The outer edge composite diaphragm according to claim 1, characterized in that: A mounting groove (13) is provided inside the carrier housing (1) and outside the magnet (12) for accommodating the voice coil (21).

4. The outer edge composite diaphragm according to claim 1, characterized in that: The outer side of the elastic arc piece (23) is fixedly connected to the outer edge component (22).

5. The outer edge composite diaphragm according to claim 1, characterized in that: The elastic arc piece (23) is provided with patterns (26) distributed in an array.

6. The outer edge composite diaphragm according to claim 5, characterized in that: The diaphragm assembly (2) comprises a base layer (221), on which a composite layer (222) is fixedly provided for adjusting the elasticity of the entire diaphragm.

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