Audio equipment capable of shielding electromagnetic interference

Abstract

The utility model relates to the technical field of audio equipment, and discloses audio equipment capable of shielding electromagnetic interference, which comprises a protective shell, the outer wall of the protective shell is in sliding connection with a fixed plate, the inner wall of the fixed plate is fixedly connected with a sliding block, the outer wall of the sliding block is in sliding connection with a sliding plate, the bottom of the sliding plate is fixedly connected with a sub-buckle, and the sub-buckle is fixedly connected with the outer wall of the fixed plate. A female buckle is arranged in the fixed plate, protective rings are fixedly connected to one side of the outer wall of the fixed plate and one side of the outer wall of the sliding plate, a perspective window is arranged in the fixed plate, and sealing assemblies are arranged in the protective rings. According to the utility model, the interface gap can be effectively filled, and the shielding body forms an uninterrupted complete shielding space, so that the shielding effect on electromagnetic interference is remarkably improved, the audio equipment can still transmit audio signals stably in a strong electromagnetic environment, and the audio quality is not influenced by the electromagnetic interference.

Description

Technical Field

[0001] This utility model relates to the field of audio equipment technology, and in particular to an audio device that shields against electromagnetic interference. Background Technology

[0002] In the field of audio equipment, with the widespread application of electronic technology, devices are susceptible to external electromagnetic interference when operating in complex electromagnetic environments, leading to problems such as unstable audio signal transmission and sound quality distortion. Especially in professional audio equipment (such as recording equipment and stage sound systems), electromagnetic interference can cause noise superposition and signal interruption, severely impacting equipment performance and user experience. Therefore, developing an audio device that can effectively shield against electromagnetic interference and ensure stable operation in strong electromagnetic environments has become an important research direction in the field of audio technology.

[0003] In existing technologies, electromagnetic shielding of audio equipment typically employs either a monolithic metal casing or a single sealed structure. Monolithic shielding encloses internal components in a metal casing, utilizing the electromagnetic shielding properties of metal to block external interference. However, when external signal interfaces are involved, traditional designs often use fixed sealed structures, achieving a seal at the interface through bolts or adhesive bonding. Such structures rely on static seals (such as rubber rings) to fill gaps, and their sealing performance is significantly affected by installation accuracy and long-term wear. Furthermore, frequent plugging and unplugging of connectors can easily disrupt the shielding continuity due to mechanical wear at the interface, making them unsuitable for applications requiring frequent disassembly and reassembly.

[0004] In existing technologies, it is difficult to completely fill the complex gaps between the connector and the device interface after insertion, especially in sliding connection structures. The gaps between the fixed plate and the moving parts can become channels for electromagnetic leakage, leading to a decrease in shielding effectiveness. When the device needs to be frequently connected to external connectors, the sealing and shielding continuity at the interface cannot be effectively guaranteed, which in turn affects the transmission quality of audio signals and the device's anti-interference capability. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an audio device that shields against electromagnetic interference. It aims to improve the problem that in the prior art, it is difficult to completely fill the complex gap between the connector and the device interface after insertion. In particular, in sliding connection structures, the gap between the fixed plate and the moving parts may become a channel for electromagnetic leakage, leading to a decrease in shielding effectiveness.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an audio device for shielding electromagnetic interference, comprising a protective shell, a fixed plate slidably connected to the outer wall of the protective shell, a slider fixedly connected to the inner wall of the fixed plate, a sliding plate slidably connected to the outer wall of the slider, a male buckle fixedly connected to the bottom of the sliding plate, a female buckle provided inside the fixed plate, a protective ring fixedly connected to one side of the outer wall of both the fixed plate and the sliding plate, a viewing window provided inside the fixed plate, and a sealing component provided inside the protective ring;

[0007] The sealing assembly includes a sealing gasket, the outer wall of which is slidably connected to the inside of the protective ring, and a telescopic rod is fixedly connected inside the sealing gasket. A spring is sleeved on the outer wall of the telescopic rod.

[0008] Furthermore, a pull rod is slidably connected inside the sliding plate, one end of the pull rod is provided with a disassembly and assembly component, a locking block is sleeved on the outer wall of the pull rod, a sealing strip is provided between the sliding plate and the protective shell, a sliding groove is opened inside the fixed plate, and the bottom of the protective shell is slidably connected inside the sliding groove.

[0009] Furthermore, the disassembly and assembly assembly includes a second spring and a limiting block. The second spring is fixedly connected to one end of the pull rod, and the limiting block is fixedly connected to one side of the outer wall of the protective shell.

[0010] Furthermore, one end of the locking block is fixedly connected to the inside of the sliding plate, and the other end of the locking block is fixedly connected to the outer wall of the second spring.

[0011] Furthermore, the outer wall of the limiting block is slidably connected to the inside of the sliding plate and the outer wall of the second spring, and the second spring is used to limit the limiting block.

[0012] Furthermore, one end of the spring is fixedly connected to the outer wall of the sealing gasket, and the other end of the spring is fixedly connected to the inside of the protective ring.

[0013] Furthermore, an exhaust pipe is fixedly connected to the bottom of the fixing plate, and the exhaust pipe is used to dissipate heat from the inside of the fixing plate.

[0014] Furthermore, a display screen is provided on the top of the fixing plate, and a bracket is fixedly connected to the bottom of the fixing plate.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, through the cooperative structure design of the sliding plate and the fixed plate, when connecting an external connector, the male and female buckles can be separated by pulling the sliding plate, providing space for connector insertion. After insertion, the sliding plate resets, the sealing strip seals the interface between the fixed plate and the sliding plate, and the upper and lower protective rings tightly fit the outer wall of the connector harness. The sealing gasket is pushed tightly against the harness by the contraction of the spring, which can effectively fill the interface gap, so that the shielding body forms a complete shielding space without interruption, thereby significantly improving the shielding effect against electromagnetic interference, ensuring that the audio equipment can still transmit audio signals stably in a strong electromagnetic environment, and ensuring that the audio quality is not affected by electromagnetic interference.

[0017] 2. In this utility model, a disassembly structure composed of components such as a pull rod, a second spring, a locking block, a limiting block, and a sliding groove is used. When it is necessary to disassemble the sliding plate, pulling the pull rod causes the second spring and the locking block to retract, so that the second spring disengages from the outer wall of the limiting block. This allows the sliding plate to be easily pulled, causing the limiting block to disengage from the outer wall of the fixed plate. During this process, the sliding groove not only serves as a guide but also achieves sealing, making the disassembly of the sliding plate simple and convenient, requiring no complicated tools, greatly improving the efficiency of equipment maintenance and repair. At the same time, it ensures the sealing and structural stability of the equipment during disassembly, facilitating long-term use and maintenance of the equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an audio device for shielding electromagnetic interference proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of one side of the sliding plate structure of an audio device that shields against electromagnetic interference, as proposed in this utility model.

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 for Figure 2 Enlarged view at point B in the middle;

[0022] Figure 5 This is a schematic diagram of the internal structure of a protective shell for an audio device that shields against electromagnetic interference, as proposed in this utility model.

[0023] Figure 6 for Figure 5 Enlarged view of point C in the middle.

[0024] Legend:

[0025] 1. Protective shell; 2. Fixing plate; 3. Sliding plate; 4. Slider; 5. Male buckle; 6. Female buckle; 7. Viewing window; 8. Protective ring; 9. Sealing gasket; 10. Telescopic rod; 11. Spring 1; 12. Pull rod; 13. Locking block; 14. Spring 2; 15. Limiting block; 16. Slide groove; 17. Sealing strip; 18. Exhaust pipe; 19. Bracket; 20. Display screen. Detailed Implementation

[0026] 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.

[0027] Reference Figure 1 - Figure 4 This utility model provides an embodiment of an audio device for shielding electromagnetic interference, comprising a protective shell 1, a fixed plate 2 slidably connected to the outer wall of the protective shell 1, providing a fixed base for connector insertion, a female buckle 6 provided on the inner wall that cooperates with the male buckle 5 of the sliding plate 3 for fixation, and the outer side connected to the shielding shell to form a complete shielding space, a slider 4 fixedly connected to the inner wall of the fixed plate 2, and a sliding plate 3 slidably connected to the outer wall of the slider 4, thereby opening and closing the connector insertion space by sliding on the inner wall of the fixed plate 2, forming a transverse sealing surface with the fixed plate 2, and a male buckle 5 fixedly connected to the bottom of the sliding plate 3. The fixed plate 2 is provided with a female buckle 6 and a male buckle 5 inside. The female buckle 6 is used to fix the relative position of the sliding plate 3 and the fixed plate 2 to ensure the structural stability under the sealed state. When separated, it provides operating space for the connector to be inserted. The outer wall of the fixed plate 2 and the sliding plate 3 are both fixedly connected with a protective ring 8. The elastic rubber ring structure has an inner diameter that matches the outer diameter of the connector wire harness. When the sliding plate 3 is reset, the upper and lower protective rings 8 are tightly attached to the outer wall of the wire harness to form a longitudinal annular sealing surface to prevent electromagnetic interference from entering from the gap between the wire harness and the interface. The fixed plate 2 is provided with a viewing window 7 inside, and the protective ring 8 is provided with a sealing component inside.

[0028] The sealing assembly includes a sealing gasket 9, which tightly presses the wire harness skin with the axial thrust of a spring-11. The embedded fit between the raised texture and the wire harness groove enhances the sealing effect, while the metal layer improves the electromagnetic shielding performance. The outer wall of the sealing gasket 9 is slidably connected to the inside of the protective ring 8. A telescopic rod 10 is fixedly connected to the inside of the sealing gasket 9. The outer wall of the telescopic rod 10 is fitted with a spring-11, which provides continuous elastic thrust to ensure that the sealing gasket 9 and the wire harness are always in contact, adapting to the dynamic sealing requirements of wire harnesses of different diameters. One end of the spring-11 is fixedly connected to the outer wall of the sealing gasket 9, and the other end of the spring-11 is fixedly connected to the inside of the protective ring 8. An exhaust pipe 18 is fixedly connected to the bottom of the fixing plate 2 for heat dissipation inside the fixing plate 2. A display screen 20 is provided on the top of the fixing plate 2, and a bracket 19 is fixedly connected to the bottom of the fixing plate 2.

[0029] Specifically, through the cooperative design of sliding plate 3 and fixed plate 2, pulling sliding plate 3 separates male buckle 5 from female buckle 6 to insert connector. After resetting, sealing strip 17 seals the interface, upper and lower protective rings 8 fit against the outer wall of wire harness, and sealing gasket 9 is pushed by spring 11 to make close contact with wire harness. Multiple seals fill gaps, forming uninterrupted shielding space, improving electromagnetic interference shielding effect, and ensuring stable transmission of audio signals.

[0030] Reference Figure 1 , Figure 5 and Figure 6 A pull rod 12 is slidably connected inside the sliding plate 3. Pulling the pull rod 12 causes the spring 14 and the locking block 13 to slide inside the sliding plate 3. A disassembly assembly is provided at one end of the pull rod 12, and the locking block 13 is fitted on the outer wall of the pull rod 12. A sealing strip 17 is provided between the sliding plate 3 and the protective shell 1. A groove 16 is provided inside the fixed plate 2, and the bottom of the protective shell 1 is slidably connected inside the groove 16. The disassembly assembly includes the spring 14 and the limiting block 15. The spring 14 is fixedly connected to one end of the pull rod 12. The tension spring is connected to the pull rod 12 at one end and fixed to the inner wall of the sliding plate 3 at the other end. When the pull rod 12 is pulled, the spring 14 is stretched, causing the locking block 13 to retract towards the inside of the sliding plate 3, so that the locking block 13 disengages from the limiting block. The slot of 15 releases the locking state between the sliding plate 3 and the fixed plate 2. The limiting block 15 is fixedly connected to one side of the outer wall of the protective shell 1. One end of the locking block 13 is fixedly connected to the inside of the sliding plate 3. The wedge structure locks the position of the sliding plate 3 when it cooperates with the slot of the limiting block 15. After retraction, it allows the sliding plate 3 to move freely. The other end of the locking block 13 is fixedly connected to the outer wall of the second spring 14. The outer wall of the limiting block 15 is slidably connected to the inside of the sliding plate 3 and the outer wall of the second spring 14. It is fixed to the outer wall of the fixed plate 2. The surface is provided with an annular slot, which cooperates with the locking block 13 to lock the sliding plate 3. When the second spring 14 is disengaged from its outer wall, the limiting block 15 is disassembled synchronously with the sliding plate 3. The second spring 14 is used to limit the limiting block 15.

[0031] Specifically, by linking components such as pull rod 12, spring 14, and locking block 13, pulling pull rod 12 causes spring 14 to disengage from limiting block 15, which in turn drives sliding plate 3 to be disassembled along slide groove 16. The operation is convenient and requires no tools, improving maintenance efficiency while ensuring sealing and structural stability.

[0032] Working principle: When an audio device that needs to shield against electromagnetic interference is required, first pull the sliding plate 3 to slide on the inner wall of the fixed plate 2. At the same time, the male buckle 5 and the female buckle 6 separate. Then, the external connector can be inserted into the interior of the fixed plate 2. Then, the sliding plate 3 is put back. The interface between the fixed plate 2 and the sliding plate 3 is sealed by the preset sealing gasket. The protective rings 8 on the upper and lower sides are tightly attached to the outer wall of the connector's wire harness. The sealing gasket 9 is pushed by the contraction of the spring 11 to ensure a tight fit with the wire harness, achieving efficient sealing, thereby filling the gap at the interface and ensuring that the shielding body achieves stable shielding without interruption.

[0033] In addition, pulling the lever 12 causes the second spring 14 to slide inside the sliding plate 3, while the locking block 13 retracts. When the second spring 14 disengages from the outer wall of the limiting block 15, the sliding plate 3 can be pulled to disengage the limiting block 15 from the outer wall of the fixed plate 2. At the same time, the sliding groove 16 can guide and seal, achieving the effect of easy disassembly.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. An audio device shielded from electromagnetic interference, comprising a protective casing (1), characterized in that: The outer wall of the protective shell (1) is slidably connected with a fixed plate (2), the inner wall of the fixed plate (2) is fixedly connected with a sliding block (4), the outer wall of the sliding block (4) is slidably connected with a sliding plate (3), the bottom of the sliding plate (3) is fixedly connected with a sub-buckle (5), the inside of the fixed plate (2) is provided with a female buckle (6), the outer wall of the fixed plate (2) and the sliding plate (3) is fixedly connected with a protective ring (8), the inside of the fixed plate (2) is provided with a perspective window (7), the inside of the protective ring (8) is provided with a sealing assembly; The sealing assembly comprises a sealing gasket (9), the outer wall of the sealing gasket (9) is slidably connected in the inside of the protective ring (8), the inside of the sealing gasket (9) is fixedly connected with a telescopic rod (10), the outer wall of the telescopic rod (10) is sleeved with a spring (11).

2. The audio device of claim 1, wherein: The inside of the sliding plate (3) is slidably connected with a pull rod (12), one end of the pull rod (12) is provided with a dismounting assembly, the outer wall of the pull rod (12) is sleeved with a clamping block (13), the sliding plate (3) and the protective shell (1) are provided with a sealing strip (17), the inside of the fixed plate (2) is provided with a sliding groove (16), the bottom of the protective shell (1) is slidably connected in the inside of the sliding groove (16).

3. The audio device of claim 2, wherein: The dismounting assembly comprises a spring (14) and a limiting block (15), the spring (14) is fixedly connected at one end of the pull rod (12), the limiting block (15) is fixedly connected at one side of the outer wall of the protective shell (1).

4. The audio device of claim 3, wherein: One end of the clamping block (13) is fixedly connected in the inside of the sliding plate (3), the other end of the clamping block (13) is fixedly connected at the outer wall of the spring (14).

5. The audio device of claim 3, wherein: The outer wall of the limiting block (15) is slidably connected in the inside of the sliding plate (3) and the outer wall of the spring (14), the spring (14) is used for limiting the limiting block (15).

6. The audio device of claim 1, wherein: One end of the spring (11) is fixedly connected at the outer wall of the sealing gasket (9), the other end of the spring (11) is fixedly connected in the inside of the protective ring (8).

7. The audio device of claim 1, wherein: The bottom of the fixed plate (2) is fixedly connected with an exhaust pipe (18), the exhaust pipe (18) is used for heat dissipation in the inside of the fixed plate (2).

8. The audio device of claim 1, wherein: The top of the fixed plate (2) is provided with a display screen (20), the bottom of the fixed plate (2) is fixedly connected with a support (19).

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