Sound coil capable of preventing winding from loosening

Abstract

The utility model discloses a sound coil capable of preventing winding loosening, which relates to the technical field of sound coils, and comprises a basin stand, the rear side of the basin stand is fixedly connected with an isolating ring, and a support cylinder is arranged inside the joint of the basin stand and the isolating ring; mounting grooves which are annularly distributed at equal intervals are formed in the outer side of the supporting cylinder, a fixing strip is fixedly connected to the interior of each mounting groove, a coil is wound on the outer side of the supporting cylinder, the coil is mounted in the fixing strip, and the fixing strip is of an annular structure which is connected end to end. According to the sound coil capable of preventing the winding from loosening, a fixed strip surrounding structure is adopted, a closed annular structure is formed through glue bonding, the coil is additionally reinforced, loosening or displacement of the coil caused by long-term vibration is avoided, an annular air bag is additionally arranged to serve as a buffering device, a damping effect is provided when the amplitude of the supporting cylinder is too large, and impact force is effectively absorbed; the coil is further prevented from loosening, and the stability and the service life of the sound system are improved.

Description

Technical Field

[0001] This utility model relates to the field of audio coil technology, specifically to an audio coil designed to prevent winding loosening. Background Technology

[0002] A voice coil typically refers to the voice coil in a loudspeaker or microphone. It is usually composed of conductive coils that work in a magnetic field to produce sound.

[0003] To overcome the above-mentioned defects, a Chinese patent (publication number: CN218772412U) discloses a multi-winding voice coil, including a voice coil skeleton. The outer wall of the voice coil skeleton is provided with several voice coil sleeves, and each voice coil sleeve has a voice coil winding wound on its outer wall. Two guide bosses are integrally provided on the inner wall of each voice coil sleeve. The two guide bosses are slidably installed inside two guide grooves, both of which are located on the outer wall of the voice coil skeleton. By providing several voice coil sleeves and voice coil windings on the outer side of the voice coil skeleton, multiple voice coil windings can simultaneously generate a magnetic field during voice coil operation. This magnetic field can cooperate with an external magnetic field, enabling the voice coil skeleton to move. Increasing the number of voice coil windings increases the driving force for the voice coil skeleton's movement, resulting in a richer and more resonant bass response from the speaker, thus improving the speaker's sound quality.

[0004] While existing technologies can overcome the shortcomings mentioned above, other problems still exist in their operation: the voice coil generates sound through its vibration during use, so the coil and the coil wound around the voice coil skeleton are prone to loosening during vibration. Utility Model Content

[0005] The purpose of this invention is to provide a speaker coil that prevents the winding from loosening, in order to solve the problem in the background art where the voice coil generates sound through vibration during use, and therefore the coil wound around the voice coil frame and the coil are prone to loosening during vibration.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an audio coil for preventing loosening of the winding, comprising a frame, wherein an isolation ring is fixedly connected to the rear side of the frame, and a support cylinder is installed inside the connection between the frame and the isolation ring;

[0007] The support cylinder has annularly distributed mounting slots on its outer side, and each mounting slot is fixedly connected to a fixing strip. A coil is wound around the outer side of the support cylinder, and the coil is installed inside the fixing strip. The fixing strip is a ring structure with its ends connected to each other.

[0008] Preferably, a ring magnet is fixedly connected to the side of the isolation ring away from the basin frame, and a T-iron is fixedly connected to the side of the ring magnet away from the isolation ring.

[0009] Preferably, an extension block is fixedly connected to the side of the T-iron facing the annular magnet, and the extension block extends to the middle of the isolation ring and the annular magnet.

[0010] Preferably, a gap is provided between the extension block and the annular magnet, and the support cylinder is installed in the gap between the extension block and the annular magnet, and the coil is located in the gap between the extension block and the annular magnet.

[0011] Preferably, the connection between the T-iron and the extension block is provided with annularly distributed grooves, and annular airbags are fixedly connected inside the grooves, with the annular airbags and the support cylinders aligned with each other.

[0012] Preferably, a diaphragm is fixedly connected to the outer side of the end of the support cylinder away from the T-iron, and two diaphragms are provided to form a double-layer structure, and the outer side of the diaphragm is fixedly connected to the inner side of the frame.

[0013] Preferably, a paper basin is fixedly connected to the inner side of the basin frame, and the middle of the paper basin and the end of the support cylinder away from the T-iron are connected to each other.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This type of audio coil that prevents the winding from loosening adopts a fixed strip surrounding structure. It is glued together to form a closed loop structure, which provides extra reinforcement to the coil and prevents the coil from loosening or shifting due to long-term vibration.

[0016] Adding a ring-shaped airbag as a buffer device provides shock absorption when the amplitude of the support cylinder is too large, effectively absorbing the impact force, further preventing the coil from loosening, and improving the stability and service life of the audio system. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the diaphragm structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the fixing strip structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the T-iron explosion structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the annular magnet of this utility model.

[0023] In the diagram: 1. Sink frame; 2. Isolation ring; 3. Ring magnet; 4. T-iron; 5. Support cylinder; 6. Mounting groove; 7. Fixing strip; 8. Coil; 9. Extension block; 10. Ring airbag; 11. Diaphragm; 12. Paper cone. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figure 1 one Figure 6 The present invention provides the following technical solution: a speaker coil for preventing loosening of the winding, comprising a frame 1, an isolation ring 2 fixedly connected to the rear side of the frame 1, and a support cylinder 5 installed inside the connection between the frame 1 and the isolation ring 2; the outer side of the support cylinder 5 is provided with annularly distributed mounting grooves 6, and a fixing strip 7 is fixedly connected inside each mounting groove 6; a coil 8 is wound around the outer side of the support cylinder 5, and the coil 8 is installed inside the fixing strip 7, and the fixing strip 7 is a ring structure with its ends connected to each other; an annular magnet 3 is fixedly connected to the side of the isolation ring 2 away from the frame 1, and a T-iron 4 is fixedly connected to the side of the annular magnet 3 away from the isolation ring 2; an extension block 9 is fixedly connected to the middle of the T-iron 4 facing the annular magnet 3, and the extension block 9 extends to the middle of the isolation ring 2 and the annular magnet 3; a gap is provided between the extension block 9 and the annular magnet 3, and the support cylinder 5 is installed in the gap between the extension block 9 and the annular magnet 3, and the coil 8 is located in the gap between the extension block 9 and the annular magnet 3.

[0026] When the audio system is working, an electrical signal is input to coil 8. Since coil 8 is spiral-shaped, a magnetic field is generated inside it when current passes through it. This magnetic field interacts with the fixed magnetic field of the ring magnet 3. According to the principle of electromagnetic induction, coil 8 is driven by the magnetic field force, thus reciprocating along the gap between the extension block 9 and the ring magnet 3.

[0027] Since the coil 8 is wound and installed on the outside of the support cylinder 5, the support cylinder 5 will move synchronously when the coil 8 moves. During the entire vibration process, the support cylinder 5 plays a key role in converting the vibration of the coil 8 into mechanical vibration, so that the subsequent paper cone 12 can be effectively driven and thus produce sound.

[0028] The support cylinder 5 is not only connected to the coil 8, but is also fixed between the frame 1 and the isolation ring 2 via the diaphragm 11. The diaphragm 11 itself is a highly elastic material that can vibrate rapidly. Its function is to allow the support cylinder 5 to vibrate freely, while also providing a certain degree of damping to prevent sound distortion or unnecessary resonance. Since the diaphragm 11 does not cause too much interference to the vibration, it can ensure that the audio system can operate stably in different frequency ranges.

[0029] To prevent the coil 8 from loosening during prolonged vibration, it is first tightly wound around the outside of the support cylinder 5 and then wrapped around the fixing strip 7 during assembly. Simultaneously, during the winding process, the coil 8 is firmly bonded to the support cylinder 5 and the fixing strip 7 using adhesive. Furthermore, the two ends of the fixing strip 7 are interconnected to form a closed loop structure, further reinforcing the coil 8. This ensures that the coil 8 will not detach due to inertial forces during high-speed vibration, improving the stability and durability of the audio system.

[0030] Example 2: Based on Example 1, the following structure is also disclosed: A ring-shaped groove is provided at the connection between T-iron 4 and extension block 9, and a ring-shaped airbag 10 is fixedly connected inside the groove, and the ring-shaped airbag 10 and the support cylinder 5 are aligned with each other; a diaphragm 11 is fixedly connected to the outer side of the end of the support cylinder 5 away from T-iron 4, and two diaphragms 11 are provided to form a double-layer structure, and the outer side of the diaphragm 11 is fixedly connected to the inner side of the basin frame 1; a paper basin 12 is fixedly connected to the inner side of the basin frame 1, and the middle of the paper basin 12 is connected to the end of the support cylinder 5 away from T-iron 4.

[0031] An annular groove is provided at the connection between T-iron 4 and extension block 9, and an annular airbag 10 is fixedly installed in the groove. The annular airbag 10 is aligned with the support cylinder 5, which plays a role in buffering and shock absorption. When the support cylinder 5 and coil 8 vibrate in the gap between extension block 9 and annular magnet 3, their amplitude will increase with the increase of input current. If the amplitude exceeds the safe range, the support cylinder 5 will contact the annular airbag 10. At this time, the annular airbag 10 can absorb some energy, reduce the impact force, effectively prevent the support cylinder 5 from being damaged due to excessive vibration, and also reduce the risk of coil 8 loosening.

[0032] In addition to the physical cushioning provided by the annular airbag 10, a double-layer diaphragm 11 structure is used here to give it better elasticity and durability. One side of the double-layer diaphragm 11 is fixedly connected to the inside of the frame 1, and the other side is fixedly connected to the far end of the support tube 5, consistent with the paper cone 12. The double-layer structure can withstand stronger vibration impact, while reducing structural fatigue caused by high-frequency vibration and improving the service life of the speaker.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An audio coil for preventing loosening of the winding, comprising a frame (1), wherein an isolation ring (2) is fixedly connected to the rear side of the frame (1), and a support cylinder (5) is installed inside the connection between the frame (1) and the isolation ring (2); Its features are: The support cylinder (5) has annularly distributed mounting grooves (6) on its outer side, and each mounting groove (6) is fixedly connected to a fixing strip (7). A coil (8) is wound around the outer side of the support cylinder (5), and the coil (8) is installed inside the fixing strip (7). The fixing strip (7) is a ring structure with its ends connected.

2. The audio coil for preventing winding loosening according to claim 1, characterized in that: The isolation ring (2) is fixedly connected to a ring magnet (3) on the side away from the basin frame (1), and a T-iron (4) is fixedly connected to the side of the ring magnet (3) away from the isolation ring (2).

3. The audio coil for preventing winding loosening according to claim 2, characterized in that: An extension block (9) is fixedly connected to the side of the T-iron (4) facing the annular magnet (3), and the extension block (9) extends to the middle of the isolation ring (2) and the annular magnet (3).

4. The audio coil for preventing winding loosening according to claim 3, characterized in that: A gap is provided between the extension block (9) and the annular magnet (3), and the support cylinder (5) is installed in the gap between the extension block (9) and the annular magnet (3), and the coil (8) is located in the gap between the extension block (9) and the annular magnet (3).

5. The audio coil for preventing winding loosening according to claim 2, characterized in that: The T-iron (4) and the extension block (9) are connected by annularly distributed grooves, and annular airbags (10) are fixedly connected inside the grooves. The annular airbags (10) and the support cylinder (5) are aligned with each other.

6. The audio coil for preventing winding loosening according to claim 5, characterized in that: The support cylinder (5) is fixedly connected to a diaphragm (11) on the outer side of the end away from the T iron (4), and the diaphragm (11) is provided with two to form a double-layer structure, and the outer side of the diaphragm (11) is fixedly connected to the inner side of the basin frame (1).

7. The audio coil for preventing winding loosening according to claim 6, characterized in that: A paper basin (12) is fixedly connected to the inside of the basin frame (1), and the middle of the paper basin (12) and the end of the support cylinder (5) away from the T iron (4) are connected to each other.

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