A planar diaphragm combining parallel and series connections

Abstract

This utility model relates to the field of planar diaphragm technology, specifically a planar diaphragm combining parallel and series connections. It includes a diaphragm sheet and conductive coils disposed on the diaphragm sheet. Each conductive coil consists of several conductive lines arranged around the edge of the diaphragm sheet and spaced inwards. Adjacent conductive lines are connected in series or parallel. This utility model increases the length or cross-sectional area of ​​the conductive lines by arranging several conductive lines around the edge of the diaphragm sheet and spaced inwards, then connecting adjacent conductive lines in series or parallel. This allows for flexible adjustment of the impedance of the conductive coil, increasing the diaphragm's dynamics, improving audio signal transmission efficiency, and ultimately enhancing the diaphragm's sensitivity and sound quality. It ensures stable diaphragm operation and extends its service life. This series-parallel combination allows for flexible adjustment of the diaphragm's impedance to meet the needs of different audio devices, achieving broader compatibility.

Description

Technical Field

[0001] This utility model relates to the field of planar diaphragm technology, specifically to a planar diaphragm that combines parallel and series connections. Background Technology

[0002] A planar magnetic diaphragm is a sound-producing component in audio equipment. It enhances the sound quality of audio devices through its low distortion, high resolution, and wide soundstage. It is widely used in high-end audio equipment. In the production of a planar magnetic diaphragm, a conductive layer is created by printing, bonding, vacuum plating, or water plating onto the diaphragm. Then, conductive coils are formed through laser etching or chemical etching. This allows the diaphragm to work in conjunction with other components to convert electrical signals into sound waves, thereby achieving audio output.

[0003] Existing planar diaphragms increase driving force by adding effective circuitry, but because they only use series or parallel circuitry, the impedance of the planar diaphragm is either too high or too low, thus affecting the speaker's output power and reducing sound quality. When only series circuitry is used, the increased circuit length leads to increased impedance, affecting the audio signal transmission efficiency and reducing sound quality. When only parallel circuitry is used, the circuit impedance is too low, resulting in excessive current, which increases power consumption and power requirements, potentially causing safety issues such as diaphragm burnout. Therefore, this invention proposes a planar diaphragm that combines parallel and series circuitry. Summary of the Invention

[0004] This invention provides a planar diaphragm that combines parallel and series connections, and solves the problems caused by the series connection or conductive circuit of existing planar diaphragms by optimizing the layout of conductive coils.

[0005] The objective of this utility model is achieved through the following means:

[0006] A planar diaphragm combining parallel and series connections includes a diaphragm and a conductive coil disposed on the diaphragm. The conductive coil is composed of a plurality of conductive lines, which are arranged around the edge of the diaphragm and spaced inward. Adjacent conductive lines are connected in series or in parallel.

[0007] Furthermore, the conductive coil is provided on both sides of the diaphragm.

[0008] Furthermore, the conductive coils are connected in series or in parallel with each other.

[0009] Furthermore, a fixing bracket is fitted on the outer side of the diaphragm, and the diaphragm is connected to the fixing bracket through a suspension edge.

[0010] Furthermore, the fixed bracket is provided with a transmission line that connects and cooperates with the conductive coil.

[0011] The beneficial effects of this invention are as follows: By arranging several conductive lines around the edge of the diaphragm and distributing them inward at intervals, and then connecting adjacent conductive lines in series or parallel, the length or cross-sectional area of ​​the conductive lines is increased. This allows for flexible adjustment of the impedance of the conductive coil, increasing the dynamics of the diaphragm, improving the transmission efficiency of audio signals, and thus enhancing the sensitivity and sound quality of the diaphragm. It also ensures stable diaphragm operation and extends its service life. Attached Figure Description

[0012] Figure 1 This is a front view of a planar diaphragm combining parallel and series connections in Embodiment 1;

[0013] Figure 2 This is a rear view of a planar diaphragm combining parallel and series connections in Embodiment 1;

[0014] Figure 3 for Figure 2 Enlarged diagram of A in the middle;

[0015] Figure 4 This is an exploded schematic diagram of a planar diaphragm combining parallel and series connections in Embodiment 1;

[0016] Figure 5 This is a front view of a planar diaphragm combining parallel and series connections in Embodiment 2;

[0017] Figure 6 for Figure 5 Enlarged diagram of B in the diagram;

[0018] Figure 7 This is a front view of a planar diaphragm combining parallel and series connections in Embodiment 3;

[0019] Figure 8 for Figure 7 Enlarged diagram of C in the middle;

[0020] The reference numerals in the figure are as follows: 1-diaphragm, 2-conductive coil, 21-conductive line, 211-parallel line, 212-series line, 3-fixed bracket, 31-transmission line, 4-suspension edge. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Example 1:

[0023] In this embodiment, refer to Figure 1 - Figure 4The specific implementation of a planar diaphragm combining parallel and series connections includes a diaphragm 1 and a conductive coil 2 disposed on the diaphragm 1. The conductive coil 2 is composed of a plurality of conductive lines 21, which are arranged around the edge of the diaphragm 1 and distributed inward at intervals. Adjacent conductive lines 21 are connected in series or in parallel.

[0024] In this embodiment, the conductive lines 21 are arranged in concentric rings to ensure uniform current distribution, reduce impedance, and make the diaphragm 1 more uniformly stressed, avoiding problems such as local deformation and segmented vibration, thereby improving the overall sound quality.

[0025] By connecting two adjacent conductive lines 21 in series or in parallel, a parallel line 211 or a series line 212 is formed. The parallel line 211 can increase the cross-sectional area of ​​the conductive line 21, reduce the overall impedance, and improve the current transmission efficiency; the series line 212 can extend the effective length of the conductive line 21, increase the impedance, adjust the current distribution, optimize the transmission path of the audio signal, and further improve the sound quality performance.

[0026] In this embodiment, the middle and outer sides of the diaphragm 1 are connected by parallel lines 211, which are interconnected by series lines 212. This composite connection method creates a low-impedance, high-current dynamic response region for the diaphragm 1, thereby improving its overall driving force and sensitivity and ensuring efficient audio signal transmission. This makes the diaphragm 1 suitable for audio devices requiring low impedance, high power, and high sensitivity.

[0027] The parallel circuit 211 has an input terminal and an output terminal at each end, and the output terminals and input terminals of two adjacent parallel circuits 211 are perpendicular to each other. The current direction between the parallel circuits 211 is consistent, and the force is applied from the same direction, thus achieving a superposition effect and enhancing the driving force of the diaphragm 1. The perpendicular output terminals and input terminals make the output terminals and input terminals of the series circuit 212 and the conductive circuit 21 form a 90-degree angle. According to the left-hand rule, the 90-degree force can effectively avoid magnetic field interference caused by the alternating conversion of current between series and parallel circuits, ensuring stable signal transmission and improving the overall working efficiency of the system.

[0028] In use, the output and input terminals of two adjacent parallel lines 211 are connected in sequence by series line 212 to form a total circuit. Since the parallel line 211 decomposes the original circuit into multiple branches, the cross-sectional area of ​​the line is increased and the circuit length is shortened. According to the resistance formula R = ρL / S, due to the decrease of L and the increase of S, the resistance R is significantly reduced, thus improving the current transmission efficiency.

[0029] Simultaneously, according to Ohm's law formula I = U / R, when the voltage remains constant, the current I increases accordingly due to the decrease in resistance R. Furthermore, according to the Ampere force calculation formula F = BIL, with the magnetic field strength B and effective length L remaining constant, the increase in current I significantly enhances the Ampere force F, thereby strengthening the driving force of diaphragm 1 and improving its sensitivity. This achieves high-fidelity audio output, reduces distortion, and meets the high-standard sound quality requirements of high-end audio equipment.

[0030] In this embodiment, conductive coils 2 are provided on both sides of the diaphragm 1. The arrangement of the double-sided conductive coils 2 doubles the effective length L, thereby further increasing the Ampere force F and enhancing the driving force and sensitivity of the diaphragm 1. At the same time, the symmetrical distribution of the double-sided conductive coils 2 effectively reduces local deformation and segmented vibration caused by single-sided driving, eliminates stress concentration, makes the overall movement of the diaphragm 1 more synchronized, the high-frequency details clearer, and the low-frequency control stronger, thereby reducing the distortion rate and improving the stability of sound quality.

[0031] The conductive coils 2 are connected in series or in parallel. By arranging the conductive coils 2 in series or in parallel, the diaphragm 1 can be adapted to different working environments, thereby meeting the diverse current and driving force requirements of different audio devices, improving the applicability and flexibility of the diaphragm 1, and ensuring excellent sound quality performance under various conditions.

[0032] When the conductive coils 2 are connected in series, the current path is unique, the total impedance is superimposed, the diaphragm 1 vibrates with high synchronization, and the transient response is accurate. However, the equipment needs to provide a higher driving voltage to maintain a stable current, and the series connection leads to the superposition of the total inductance, which significantly increases the inductive reactance at high frequencies and easily leads to signal attenuation. This results in a sound that is soft in high-frequency details but has limited extension, making it suitable for professional monitoring equipment, high-fidelity headphone systems, and other similar devices.

[0033] When the two conductive coils 2 are connected in parallel, they share a common node at both ends, resulting in current shunting and a lower total impedance. While the current demand is greater at the same voltage, the lower impedance improves current utilization, significantly increasing sensitivity and making it easier to achieve the desired sound pressure level. Furthermore, the parallel connection reduces the total inductance, resulting in a flatter high-frequency response, wider bandwidth, and improved resolution. This makes it suitable for portable devices such as mobile phones and Bluetooth headsets, meeting everyday entertainment needs. In this embodiment, the series-connected conductive coils 2 design ensures the diaphragm's superior performance in high-end audio equipment, achieving high-fidelity sound output, reducing distortion, and meeting the high standards of sound quality required by high-end audio equipment.

[0034] Furthermore, a fixing bracket 3 is fitted around the outer side of the diaphragm 1, and the diaphragm 1 is connected to the fixing bracket 3 via a suspension edge 4. The fixing bracket 3 is used to connect to the equipment and provide mechanical support, ensuring stable operation of the diaphragm, reducing external interference, and further improving the purity of sound quality. The suspension edge 4 is made of highly elastic materials such as silicone, rubber, TPU, and PU, giving the diaphragm 1 a certain amount of elastic expansion and contraction space, thereby increasing the amplitude and air thrust, and thus improving the dynamic range and mid-low frequency performance of the audio output.

[0035] In addition, the mounting bracket 3 is also equipped with a transmission line 31 that connects and cooperates with the conductive coil 2. The transmission line 31 makes it easier to connect the conductive coils 2 in series or in parallel, thereby simplifying the circuit design and debugging process and improving production efficiency. One end of the mounting bracket 3 is also equipped with an outwardly extending boss, on which there is a soldering point for connecting to the transmission line 31. The soldering point enables quick connection between the conductive coil 2 and the external circuit, eliminating the need to find the connection points between the conductive coils 2, simplifying the installation steps and reducing production costs.

[0036] In addition, a lead wire groove that mates with the conductive coil 2 is provided through the suspension edge 4. A connecting wire is provided in the lead wire groove, and the two ends of the connecting wire are connected to the conductive coil 2 and the conductive circuit respectively, thereby realizing the transmission and reception of signals.

[0037] In this embodiment, the lead groove is S-shaped. The S-shaped lead groove makes the connecting wire arc-shaped, thereby reducing local stress concentration, further suppressing split vibration, ensuring that the connecting wire is not easily broken during long-term use, and improving the durability and reliability of the diaphragm.

[0038] The beneficial effects of this invention are as follows: By arranging several conductive lines 21 around the edge of the diaphragm 1 and distributing them inward at intervals, and then connecting adjacent conductive lines 21 in series or parallel, the length and cross-sectional area of ​​the conductive lines 21 are increased. This allows for flexible adjustment of the impedance of the conductive coil 2, increasing the dynamics of the diaphragm, improving the transmission efficiency of audio signals, and thus enhancing the sensitivity and sound quality of the diaphragm. It also ensures stable operation of the diaphragm and extends its service life.

[0039] Example 2:

[0040] like Figures 5-6 As shown, the difference between this embodiment and Embodiment 1 is that the middle part of the diaphragm 1 adopts a parallel circuit 211, while the outer part adopts a series circuit 212. The parallel circuit 211 and the series circuit 212 are interconnected. Through this combination design, the effective current of the outer circuit of the diaphragm 1 is increased, thereby improving the power of the outer part of the diaphragm 1. This makes the diaphragm 1 perform better in the mid-low frequency range, thus adapting to the audio output requirements of the mid-low frequency range, enhancing the sense of layering and stereo effect of the audio, and improving the user experience.

[0041] Example 3:

[0042] like Figures 7-8 As shown, the difference between this embodiment and Embodiment 1 is that the middle part of the diaphragm 1 uses a series circuit 212, while the outer part uses a parallel circuit 211. The parallel circuit 211 and the series circuit 212 are interconnected. Through this combination design, the effective current of the circuit in the middle part of the diaphragm 1 is increased, thereby improving the dynamics of the middle part of the diaphragm 1. This makes the diaphragm 1 perform better in the high frequency and ultra-high frequency range, thus adapting to the audio output requirements of the high frequency and ultra-high frequency range, enhancing the delicacy and penetration of the audio, further improving the sound quality performance, and optimizing the user's listening experience.

[0043] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A planar diaphragm combining parallel and series connections, comprising a diaphragm (1) and a conductive coil (2) disposed on the diaphragm (1), characterized in that: The conductive coil (2) is composed of a number of conductive lines (21). The conductive lines (21) are arranged around the edge of the diaphragm (1) and distributed inward at intervals. Adjacent conductive lines (21) are connected in series or in parallel.

2. The planar diaphragm according to claim 1, wherein: The conductive coil (2) is provided on both sides of the diaphragm (1).

3. The planar diaphragm of claim 2, wherein: The conductive coils (2) are connected in series or in parallel.

4. The parallel-series combined planar diaphragm according to any one of claims 1-3, characterized in that: A fixing bracket (3) is fitted on the outer side of the diaphragm (1), and the diaphragm (1) is connected to the fixing bracket (3) through a suspension edge (4).

5. The planar diaphragm of claim 4, wherein: The fixed bracket (3) is provided with a transmission line (31) that is connected and cooperates with the conductive coil (2).

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