Loudspeaker diaphragm supporting structure

Abstract

The utility model discloses a loudspeaker diaphragm supporting structure, which comprises a sound basin, magnetic steel arranged at the bottom of the sound basin, a voice coil and a framework arranged in the cavity of the sound basin, a diaphragm sleeved on the framework, a bracket arranged on the sound basin and used for supporting the diaphragm, a gasket arranged above the diaphragm, and a compression ring arranged above the gasket. The pressing ring is connected with the sound cone through a plurality of bolts, a pressing sheet is arranged at the center above the vibrating diaphragm, the pressing sheet is in threaded connection with the framework, the vibrating diaphragm comprises a vibrating diaphragm main body, a connecting part matched with the framework is arranged below the vibrating diaphragm main body, and a first folding lug is arranged at the edge of the main body; according to the utility model, through multiple mechanical fixation of cooperation of the sound cone bracket and the first folding lug of the vibrating diaphragm, threaded connection of the pressing sheet and the skeleton, and fastening of the pressing ring and the bolt, the risk of easy degumming and sound leakage at part of the sealing edge during long-term use when the sealing edge of the vibrating diaphragm is bonded through a gasket to realize supporting traditionally is avoided, the stability of the vibrating diaphragm and the high efficiency of sound wave conduction are ensured, and the service life of the vibrating diaphragm is prolonged. And the tone quality performance and the service life under high volume are obviously improved.

Description

Technical Field

[0001] This utility model belongs to the field of loudspeaker manufacturing technology, and in particular relates to a loudspeaker diaphragm support structure. Background Technology

[0002] As a key electroacoustic device that converts electrical signals into sound signals, loudspeakers are widely used in consumer electronics, car audio, professional audio and other fields. Their working principle is that the voice coil vibrates in the magnetic field generated by the magnet, driven by the electrical signal, which in turn drives the diaphragm to move and push the air to produce sound.

[0003] As a core component that directly affects sound quality, the stability and reliability of the diaphragm's supporting structure play a decisive role in the acoustic performance and lifespan of the loudspeaker.

[0004] Currently, most loudspeakers on the market use a common method of placing a gasket on top of the diaphragm and securing it with adhesive. While this traditional support method is simple and low-cost, it has significant drawbacks. Specifically, during long-term use, especially in high-frequency vibration scenarios (such as when playing high-frequency audio), the stress generated by the continuous high-frequency vibration of the diaphragm concentrates at the adhesive joint. Coupled with factors such as temperature changes and humidity, this can easily lead to adhesive aging and failure, causing the adhesive to detach at the edge. Once detachment occurs, a gap will appear between the diaphragm and the gasket, causing sound signal leakage during transmission. This results in sound quality distortion and volume attenuation, severely affecting the overall performance of the loudspeaker and the user experience. Furthermore, detachment can also cause diaphragm displacement, further exacerbating structural damage and shortening the loudspeaker's lifespan.

[0005] Therefore, there is an urgent need to design a loudspeaker diaphragm support structure to solve the risk of sound leakage due to delamination caused by traditional bonding methods, and to improve the reliability and acoustic performance of loudspeakers. Utility Model Content

[0006] The purpose of this invention is to solve the problem that traditional speaker diaphragm support structures, which use gaskets for edge sealing, are prone to adhesive detachment at the edge sealing points under high-frequency vibration, leading to sound signal leakage and diaphragm displacement, which damages the structure and shortens the speaker's lifespan. Therefore, this invention provides a speaker diaphragm support structure.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a loudspeaker diaphragm support structure, including a cone, a magnet at the bottom of the cone, a voice coil and a frame inside the cone cavity, the frame being placed at the center of the voice coil, a diaphragm being fitted onto the frame, a groove for supporting the diaphragm being formed on the cone, a washer being placed above the diaphragm, a pressure ring being placed above the washer, the pressure ring being connected to the cone by several bolts, wherein a pressure plate is placed at the center above the diaphragm, and the pressure plate is connected to the frame by threads;

[0008] The diaphragm includes a diaphragm body, which has a frustum-shaped structure. A connecting part matching the skeleton is provided below the diaphragm body. The connecting part has a cylindrical sleeve structure. A first folded ear is provided at the edge of the body and is placed in the bracket.

[0009] Furthermore, the edge of the bracket extends upward and is provided with an annular flange.

[0010] Furthermore, the bracket is provided with a plurality of threaded holes corresponding to the bolts.

[0011] Furthermore, the washer is made of rubber and includes a washer body with a second folded ear on the outer edge of the washer body.

[0012] Furthermore, the second folding lug is larger than the first folding lug, and both the second folding lug and the first folding lug are provided with several through holes that mate with the bolt.

[0013] Furthermore, the pressure ring has several grooves along the circumferential direction to provide space for storing the bolts.

[0014] Furthermore, the central aperture of the connecting portion is smaller than the specification of the tablet.

[0015] Beneficial effects: This utility model has a reasonable design, simple and stable structure, and strong practicality, and has the following beneficial effects:

[0016] 1. Significantly improved stability: The diaphragm, washer and cone are fastened by the threaded connection between the pressure plate and the skeleton, and the pressure ring and bolts. Compared with the traditional bonding method, a mechanical locking structure is formed to prevent the diaphragm from shifting under high frequency vibration. The ring-shaped flanged groove further enhances edge protection and greatly improves the durability of the structure.

[0017] 2. Eliminate the risk of sound leakage: The first fold of the diaphragm is embedded in the cone bracket, and is fixed with a larger second fold of the washer and bolts, forming a double-layer seal protection. This eliminates the gaps caused by the delamination of traditional adhesives, effectively prevents sound signal leakage, and ensures pure sound quality and stable volume output.

[0018] 3. Acoustic performance optimization: The truncated cone structure of the diaphragm body makes the sound wave radiation more uniform and reduces sound distortion;

[0019] 4. Easy to assemble and maintain: The modular bolt connection design simplifies the assembly process and reduces production difficulty. When a component is damaged, only the bolts need to be removed to quickly replace components such as the diaphragm and gaskets, which greatly shortens the maintenance time and reduces costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0022] In the diagram: 1-cone, 2-magnet, 3-voice coil, 4-frame, 5-diaphragm, 6-washer, 7-pressure ring, 8-bolt, 9-pressure plate;

[0023] 101-Slot, 102-Annular flange, 103-Threaded hole, 501-Diaphragm body, 502-Connecting part, 503-First fold, 601-Washer body, 602-Second fold, 701-Groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1:

[0026] Combination Figure 1-2The speaker diaphragm support structure shown includes a cone 1, which serves as the basic load-bearing component of the entire speaker. The cone 1 is preferably made of high-strength and lightweight engineering plastic, possessing good rigidity and resistance to deformation, providing a stable mounting base for internal components. A magnet 2 is located at the bottom of the cone 1, creating a stable and high-strength magnetic field environment around it, providing the necessary magnetic driving force for the speaker's electroacoustic conversion. A voice coil 3 and a frame 4 are arranged within the cavity of the cone 1. The voice coil 3 is made of tightly wound copper wire using a specific winding process. The frame 4, located at the center of the voice coil 3, is a regular cylindrical shape. A diaphragm 5 is fitted onto the frame 4. The diaphragm 5 is a key component for sound radiation, and its design directly affects the speaker's acoustic performance. A groove 101 is provided on the cone 1 to support the diaphragm 5, and a gasket is placed above the diaphragm 5. 6. The washer 6 provides better sealing and support during subsequent assembly, and also prevents the pressure ring 7 from directly contacting the diaphragm 5, which could cause vibration and friction damage during use. The pressure ring 7 is set above the washer 6. The pressure ring 7 is made of metal and has high strength and rigidity. The pressure ring 7 is connected to the cone 1 by several bolts 8. The bolts 8 are evenly distributed at the connection between the pressure ring 7 and the cone 1. By tightening the bolts 8, the pressure ring 7, washer 6 and diaphragm 5 can be tightly fixed to the cone 1. The pressure plate 9 is set at the center of the diaphragm 5. The pressure plate 9 is connected to the frame 4 by threads. The pressure plate 9 is circular in shape, which further enhances the connection stability between the diaphragm 5 and the frame 4. It also plays a certain role in restraining and guiding the vibration of the diaphragm 5, ensuring that the diaphragm 5 maintains good shape and performance during vibration.

[0027] The diaphragm 5 includes a diaphragm body 501, which has a frustum-shaped structure. This shape can effectively improve the radiation characteristics of sound waves, making the sound more uniform and stable during propagation. The diaphragm body 501 is made of a material with good acoustic properties, which can quickly respond to electrical signals during vibration and reduce sound distortion. A connecting part 502 matching the frame 4 is provided below the diaphragm body 501. The connecting part 502 is a cylindrical sleeve structure. Its inner diameter and the outer diameter of the frame 4 are precisely designed to ensure that the connection between the diaphragm 5 and the frame 4 is firm and that there is no relative displacement during vibration. A first folded ear 503 is provided at the edge of the body 501. The first folded ear 503 is placed in the groove 101 opened on the cone 1, and the two form a precise fit. The depth and width of the groove 101 can provide stable support for the first folded ear 503, restricting the displacement of the diaphragm 5 in the vertical and horizontal directions and ensuring the stability of the diaphragm 5 during vibration.

[0028] In this embodiment, the bracket 101 has an annular flange 102 extending upward from its edge. The annular flange 102 is integrally formed with the cone 1. The flange 102 can block external dust from entering the cavity of the cone 1, and at the same time, it can protect the internal core components during use and extend the service life of the speaker.

[0029] In this embodiment, the bracket 101 is provided with a number of threaded holes 103 corresponding to the bolts 8 to improve the reliability of the connection. The axis of the threaded hole 103 is perpendicular to the mounting plane of the cone 1, and the hole depth is precisely controlled to be slightly greater than the screw-in length of the bolts 8 to prevent the bolts 8 from being screwed in too much and damaging the internal structure.

[0030] In this embodiment, the gasket 6 is made of rubber, which has good elasticity and anti-aging properties, and can maintain a stable sealing effect during long-term use. At the same time, in the rigid connection structure, it avoids the pressure ring 7 from directly contacting the diaphragm 5. The gasket 6 includes a gasket body 601, and a second folded ear 602 is provided on the outer edge of the gasket body 601. The second folded ear 602 forms a complete coverage of the edge of the diaphragm 5, ensuring effective sealing and protection.

[0031] In this embodiment, the second folding ear 602 is larger than the first folding ear 503. The second folding ear 602 is 1.2-1.8mm wider than the first folding ear 503. This size difference allows the second folding ear 602 to provide more sufficient edge support for the diaphragm 5 when the pressure ring 7 is tightened, effectively dispersing pressure and enhancing the sealing effect. At the same time, it avoids the pressure ring 7 from directly acting on the diaphragm 5 and causing damage. In addition, both the second folding ear 602 and the first folding ear 503 are provided with several through holes that cooperate with the bolts 8, which can ensure that the bolts 8 can be smoothly inserted and can form precise axial positioning when the pressure ring 7 is tightened.

[0032] In this embodiment, the pressure ring 7 is provided with a number of grooves 701 along the circumferential direction to provide space for the bolts 8. The number of grooves 701 corresponds one-to-one with the threaded holes 103 in the cone 1 bracket 101, the washer 6 and the through holes on the diaphragm 5, to ensure that after the bolts 8 are tightened, there will not be too much external leakage, thereby avoiding interference with subsequent use.

[0033] In this embodiment, the central aperture of the connecting part 502 is smaller than that of the pressure plate 9. This size difference design forms a stable limiting structure. The edge of the pressure plate 9 is rounded to provide radial support for the diaphragm 5 and limit its radial displacement during vibration. In addition, the pressure plate 9 can also fill the gap between it and the diaphragm 5, effectively improving the acoustic performance and structural stability of the speaker.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A loudspeaker diaphragm support structure, comprising a cone (1) provided with a magnetic steel (2) at the bottom, an audio coil (3) and a skeleton (4) arranged in the cavity of the cone (1), the skeleton (4) being arranged at the center of the audio coil (3), characterized in that: The skeleton (4) is sleeved with a diaphragm (5), the sound basin (1) is provided with a supporting groove (101) for the diaphragm (5), the diaphragm (5) is provided with a gasket (6) above, the gasket (6) is provided with a compression ring (7) above, the compression ring (7) is connected with the sound basin (1) through a plurality of bolts (8), wherein the diaphragm (5) is provided with a pressing piece (9) at the center above, and the pressing piece (9) is connected with the skeleton (4) through a threaded connection. The diaphragm (5) comprises a diaphragm body (501), the diaphragm body (501) is in a conical table structure, the diaphragm body (501) is provided with a matching connecting part (502) below the skeleton (4), the connecting part (502) is a cylindrical sleeve structure, the body (501) is provided with a first ear (503) at the edge, and the first ear (503) is arranged in the supporting groove (101).

2. A loudspeaker cone support structure according to claim 1, wherein: The edge of the supporting groove (101) is provided with an annular flange (102) extending upward.

3. A loudspeaker diaphragm support structure according to claim 2, wherein: The supporting groove (101) is provided with a plurality of threaded holes (103) corresponding to the bolts (8).

4. A loudspeaker diaphragm support structure according to claim 3, wherein: The gasket (6) is made of rubber material, and the gasket (6) comprises a gasket body (601), and the gasket body (601) is provided with a second ear (602) at the outer edge.

5. A loudspeaker diaphragm support structure according to claim 4, wherein: The specification of the second ear (602) is greater than that of the first ear (503), and a plurality of through holes matched with the bolts (8) are formed in the second ear (602) and the first ear (503).

6. A loudspeaker diaphragm support structure according to claim 5, wherein: A plurality of embedding grooves (701) for accommodating the bolts (8) are formed in the circumferential direction of the compression ring (7).

7. A loudspeaker diaphragm support structure according to claim 6, wherein: The center hole diameter of the connecting part (502) is smaller than the specification of the pressing piece (9).

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