An anti-interference digital signal optical isolator

Abstract

This utility model relates to the field of signal isolator technology and discloses an anti-interference digital signal optical isolator, including a housing. Screw holes are provided on the outer wall of the housing. An interface is provided on the outer wall of the housing. A dustproof component is provided on the inner wall of the interface. A connecting component is provided on the lower surface of the housing. The dustproof component includes an upper stop and a lower stop. The upper surface of the upper stop is fixedly connected to the top of the inner wall of the interface. The outer wall of the lower stop is slidably connected to the inner wall of the interface and slidably connected to the outer wall of the upper stop. A sliding button is fixedly connected to the outer wall of the lower stop. A sliding rod is fixedly connected to the lower surface of the sliding button. A spring is sleeved on the outer wall of the sliding rod. In this utility model, the dustproof component achieves dynamic sealing of the interface through the sliding cooperation of the upper and lower stops. This design ensures dustproof effect while increasing protection and fixation of the connector, and the spring reset mechanism ensures that the stops are always in an adaptive state.

Description

Technical Field

[0001] This utility model relates to the field of signal isolators, and in particular to an anti-interference digital signal optical isolator. Background Technology

[0002] Digital signal optical isolators are key components in industrial automation, communication equipment, and other fields. They achieve electrical isolation of signal transmission through photoelectric conversion and can effectively suppress electromagnetic interference problems such as ground loop interference and surge impact. With the increasing complexity of industrial site environments, equipment needs to operate under harsh conditions such as dust and oil for a long time. This places higher demands on the long-term stability and protection performance of signal interfaces. A digital signal optical isolator with anti-interference capabilities and the ability to adapt to harsh environments has become an important technical direction for ensuring system reliability.

[0003] The main body structure of existing anti-interference digital signal optical isolators is mainly composed of metal or engineering plastic housings. The housing integrates optocouplers, signal conditioning circuits, and isolation power supply modules. The housing surface is equipped with standard electrical interfaces, such as terminal blocks or connectors, and the equipment is fixed by screw holes or snap-fit ​​mechanisms. It uses internal optoelectronic devices to convert input electrical signals into optical signals, which are then transmitted through the isolation barrier and converted back into electrical signals for output, thereby cutting off ground loops and suppressing common-mode interference. The heat dissipation design often adopts housing openings or additional heat sinks to achieve natural convection.

[0004] However, the existing body structure has a key defect: it does not integrate a dynamic self-sealing interface protection mechanism. The equipment interface is exposed to industrial dust environment for a long time and needs to rely on additional dust covers or manual seals for protection. However, such accessories are easy to lose or wear, and manual operation makes it difficult to ensure consistent sealing. When the interface is idle, dust can freely enter the internal circuit. This problem directly leads to a decrease in signal transmission stability and a shortened equipment life. The failure rate is significantly higher, especially in high dust scenarios such as steel and mining. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an anti-interference digital signal optical isolator, which aims to improve the problem of insufficient interface sealing effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-interference digital signal optical isolator, comprising a housing, a screw hole on the outer wall of the housing, an interface on the outer wall of the housing, a dustproof component on the inner wall of the interface, and a connecting component on the lower surface of the housing;

[0007] The dustproof assembly includes an upper stop block and a lower stop block. The upper surface of the upper stop block is fixedly connected to the top of the inner wall of the interface. The outer wall of the lower stop block is slidably connected to the inner wall of the interface and the outer wall of the upper stop block. A sliding button is fixedly connected to the outer wall of the lower stop block. A sliding rod is fixedly connected to the lower surface of the sliding button. A spring is sleeved on the outer wall of the sliding rod. One end of the spring is fixedly connected to the lower surface of the sliding button, and the other end of the spring is fixedly connected to the inner wall of the housing.

[0008] Furthermore, the connecting component includes a locking block disposed on the lower surface of the housing, a slider fixedly connected to the upper surface of the locking block, the outer wall of the slider slidably connected to the inner wall of the housing, a second sliding button slidably connected to the inner wall of the housing, a connecting rod rotatably connected to the outer wall of the second sliding button, and one end of the connecting rod rotatably connected to the upper surface of the locking block.

[0009] Furthermore, a connecting block two is fixedly connected to the outer wall of the sliding button two, and a sliding rod two is fixedly connected to the inner wall of the housing.

[0010] Furthermore, a second spring is sleeved on the outer wall of the second slide rod, one end of the second spring is fixedly connected to the inner wall of the housing, and the other end of the second spring is fixedly connected to the upper surface of the second connecting block.

[0011] Furthermore, a connecting block is fixedly connected to the bottom of the inner wall of the interface.

[0012] Furthermore, the inner wall of the sliding button is slidably connected to the outer wall of the connecting block.

[0013] Furthermore, a fixing block is fixedly connected to the bottom of the inner wall of the interface.

[0014] Furthermore, the outer wall of the housing is provided with heat dissipation holes.

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

[0016] 1. In this utility model, the dustproof component achieves dynamic sealing of the interface through the sliding cooperation of the upper and lower blocks. When the interface is idle, the spring pushes the sliding button to make the lower block slide up automatically and fit tightly with the fixed upper block to form a physical barrier. When the cable is inserted, the lower block slides down under external force to compress the spring and expose the interface channel. The entire operation can be completed by pressing down the sliding button with one hand. This design not only ensures the dustproof effect, but also increases the protection and fixation of the connector. The spring reset mechanism ensures that the block is always in an adaptive state.

[0017] 2. In this utility model, the connecting component uses a slider and a connecting rod to achieve quick installation of the equipment. Pushing the slider causes the connecting rod to rotate, driving the locking block to slide horizontally out of the housing. After being released, the spring automatically rebounds, locking the locking block in the preset position. This process does not require the assistance of tools. The extension and retraction adjustment of the locking block can be completed by pressing the slider with one hand, which not only ensures the stability of the equipment installation, but also avoids rigid impact through spring buffering, greatly improving the efficiency of disassembly and assembly and the reliability of the structure. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an anti-interference digital signal optical isolator proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the interface structure of an anti-interference digital signal optical isolator proposed in this utility model;

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

[0021] Figure 4 This is a schematic diagram of the upper block structure of an anti-interference digital signal optical isolator proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the card block structure of an anti-interference digital signal optical isolator proposed in this utility model;

[0023] Figure 6 for Figure 5 Enlarged diagram of point B in the middle.

[0024] Legend:

[0025] 1. Housing; 2. Heat dissipation holes; 3. Screw holes; 4. Interface; 5. Upper stop block; 6. Lower stop block; 7. Connecting block one; 8. Fixing block; 9. Slide button one; 10. Slide rod one; 11. Spring one; 12. Slider; 13. Slide button two; 14. Connecting block two; 15. Slide rod two; 16. Spring two; 17. Connecting rod; 18. Locking block. 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 Figures 1-6This utility model provides an embodiment of an anti-interference digital signal optical isolator, including a housing 1 that protects internal components. The outer wall of the housing 1 has screw holes 3 for fixing the connection lines of the access interface 4. The outer wall of the housing 1 is provided with an interface 4 for connecting external lines or devices, which allows digital signals to enter and exit the optical isolator through this interface to achieve signal transmission. The inner wall of the interface 4 is provided with a dustproof component. The lower surface of the housing 1 is provided with a connecting component, which allows the housing 1 to be connected to other devices or bases more flexibly.

[0028] The dustproof assembly includes an upper stop block 5 and a lower stop block 6 that cooperate to block the opening of the interface 4. When the interface 4 is not in use, it can prevent dust from entering. The upper surface of the upper stop block 5 is fixedly connected to the top of the inner wall of the interface 4. The outer wall of the lower stop block 6 is slidably connected to the inner wall of the interface 4 and the outer wall of the upper stop block 5. In this way, the lower stop block 6 can slide on the inner wall of the interface 4 and the outer wall of the upper stop block 5. A slider 9 that can drive the lower stop block 6 to slide is fixedly connected to the outer wall of the lower stop block 6. A slider rod 10 that can guide the sliding of the slider 9 is fixedly connected to the lower surface of the slider 9. A spring 11 is sleeved on the outer wall of the slider rod 10. One end of the spring 11 is fixedly connected to the lower surface of the slider 9, and the other end of the spring 11 is fixedly connected to the inner wall of the housing 1. When the slider 9 is turned, the spring 11 will be stretched or compressed. When the slider 9 is released, the spring 11 will rebound, driving the slider 9 and the lower stop block 6 back to their original positions.

[0029] The connecting assembly includes a locking block 18, which can be used with the housing 1 to clamp other devices or connecting plates. The locking block 18 is located on the lower surface of the housing 1 for convenient connection operations from below. A slider 12 is fixedly connected to the upper surface of the locking block 18. The outer wall of the slider 12 is slidably connected to the inner wall of the housing 1. When the slider 12 slides on the inner wall of the housing 1, it can move the locking block 18 together. The slider 12 restricts the movement trajectory of the locking block 18 to prevent it from falling out of the housing 1. A second slider 13 is slidably connected to the inner wall of the housing 1. Sliding the second slider 13 can control the clamping of the locking block 18. A connecting rod 17 is rotatably connected to the outer wall of the second slider 13. One end of the connecting rod 17 is rotatably connected to the upper surface of the locking block 18. When the second slider 13 slides, the connecting rod 17 rotates accordingly, transmitting the force of the second slider 13 to the locking block 18, causing the locking block 18 to move and realize the extension and retraction of the locking block 18. A second connecting block 14 is fixedly connected to the outer wall of the second slider 13, and a second slider 15 is fixedly connected to the inner wall of the housing 1. The second slide rod 15 guides the sliding of the second slide button 13 and the second connecting block 14, ensuring that they can only move along the direction of the second slide rod 15 and that the sliding is stable. The outer wall of the second slide rod 15 is fitted with a second spring 16. One end of the second spring 16 is fixedly connected to the inner wall of the housing 1, and the other end of the second spring 16 is fixedly connected to the upper surface of the second connecting block 14. When the second slide button 13 is slid, the second spring 16 will be compressed. When the second slide button 13 is released, the second spring 16 will rebound, driving the second slide button 13 and the locking block 18 back to their original positions, keeping the locking block 18 in a clamping state. The bottom of the inner wall of the interface 4 is fixedly connected to the first connecting block 7. The inner wall of the first slide button 9 is slidably connected to the outer wall of the first connecting block 7. The first connecting block 7 guides the sliding of the first slide button 9, making the sliding of the first slide button 9 more stable. The bottom of the inner wall of the interface 4 is fixedly connected to a dustproof fixing block 8. The outer wall of the housing 1 is provided with heat dissipation holes 2, which can dissipate the heat generated by the internal components of the housing 1 during operation.

[0030] Specifically, the housing 1 of the anti-interference digital signal optical isolator utilizes heat dissipation holes 2 to dissipate heat in a timely manner, ensuring the normal operation of internal components. The dustproof component at the interface 4, through the cooperation of the upper stop block 5 and the sliding lower stop block 6, effectively prevents dust when the interface 4 is not in use. The combination of the sliding button 9, the sliding rod 10, and the spring 11 facilitates the operation of the lower stop block 6 and achieves automatic reset. The connecting block 7 and the fixing block 8 further ensure the stability of the sliding of the sliding button 9 and the lower stop block 6. After the signal line is connected inside the interface 4, the signal line is securely installed through the screw hole 3. In the connecting component on the lower surface of the housing 1, the locking block 18 can slide through the slider 12. In conjunction with the sliding button 13, the connecting rod 17, the connecting block 14, the sliding rod 15, and the spring 16, the locking block 18 can be flexibly extended and retracted, facilitating the connection and fixation of the housing 1 with other devices. The coordinated work of all components gives the optical isolator the characteristics of anti-interference, dustproof, stable installation, convenient operation, and good heat dissipation, ensuring the stable and reliable transmission of digital signals.

[0031] Working principle: When this anti-interference digital signal optical isolator is needed, first, the housing 1 is fixed by the connecting assembly. Pushing the second slide button 13 compresses the second spring 16, causing the second connecting block 14 to slide along the second slide rod 15. The second slide button 13 drives the locking block 18 to extend horizontally through the connecting rod 17. The locking block 18 causes the slider 12 to slide inside the housing 1. After releasing the second slide button 13, the second spring 16 rebounds, clamping the locking block 18 in the installation position. When inserting the cable, pressing down the first slide button 9 causes the first slide rod 10 to slide along the first connecting block 7. Slide and compress spring 11, slide button 9 drives lower stop 6 to slide down the inner wall of interface 4. Fixing block 8 provides limiting and dustproof functions, so that lower stop 6 is separated from upper stop 5 and exposed to the interface 4 channel. After the cable is inserted, release slide button 9, spring 11 pushes lower stop 6 to slide up and fit tightly with upper stop 5 to achieve dynamic sealing. Then tighten the screw through screw hole 3. When the equipment is working, digital signals are input and output through interface 4, and heat dissipation hole 2 achieves natural heat dissipation. After the cable is pulled out, spring 11 automatically resets the dustproof structure.

[0032] 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 anti-jamming digital signal optical isolator comprising a housing (1), characterized in that: The outer wall of the housing (1) is provided with screw holes (3), the outer wall of the housing (1) is provided with an interface (4), the inner wall of the interface (4) is provided with a dustproof component, and the lower surface of the housing (1) is provided with a connecting component; The dustproof assembly includes an upper block (5) and a lower block (6). The upper surface of the upper block (5) is fixedly connected to the top of the inner wall of the interface (4). The outer wall of the lower block (6) is slidably connected to the inner wall of the interface (4). The outer wall of the lower block (6) is slidably connected to the outer wall of the upper block (5). A sliding button (9) is fixedly connected to the outer wall of the lower block (6). A sliding rod (10) is fixedly connected to the lower surface of the sliding button (9). A spring (11) is sleeved on the outer wall of the sliding rod (10). One end of the spring (11) is fixedly connected to the lower surface of the sliding button (9), and the other end of the spring (11) is fixedly connected to the inner wall of the housing (1).

2. The anti-jamming digital signal optical isolator according to claim 1, wherein: The connecting assembly includes a locking block (18), which is disposed on the lower surface of the housing (1). A slider (12) is fixedly connected to the upper surface of the locking block (18). The outer wall of the slider (12) is slidably connected to the inner wall of the housing (1). A second slider (13) is slidably connected to the inner wall of the housing (1). A connecting rod (17) is rotatably connected to the outer wall of the second slider (13). One end of the connecting rod (17) is rotatably connected to the upper surface of the locking block (18).

3. The anti-jamming digital signal optical isolator according to claim 2, wherein: The outer wall of the sliding button (13) is fixedly connected to the connecting block (14), and the inner wall of the housing (1) is fixedly connected to the sliding rod (15).

4. The anti-jamming digital signal optical isolator according to claim 3, wherein: The outer wall of the slide bar (15) is fitted with a spring (16). One end of the spring (16) is fixedly connected to the inner wall of the housing (1), and the other end of the spring (16) is fixedly connected to the upper surface of the connecting block (14).

5. The anti-interference digital signal optical isolator according to claim 1, characterized in that: A connecting block (7) is fixedly connected to the bottom of the inner wall of the interface (4).

6. The anti-jamming digital signal optical isolator according to claim 5, wherein: The inner wall of the slider (9) is slidably connected to the outer wall of the connecting block (7).

7. The anti-interference digital signal optical isolator according to claim 1, characterized in that: A fixing block (8) is fixedly connected to the bottom of the inner wall of the interface (4).

8. The anti-interference digital signal optical isolator according to claim 1, characterized in that: The outer wall of the housing (1) is provided with heat dissipation holes (2).

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