An electrical cabinet with interface protection

Abstract

The application belongs to the technical field of electrical cabinets, and particularly relates to an electrical cabinet with an interface protection device, which comprises a cabinet body and a cabinet door, the cabinet door is installed on the cabinet body through a rotating shaft, a protection box is installed in the cabinet body, cables in the cabinet body pass through the protection box, connectors on the cables are located in the protection box, an installation chamber is formed in the protection box, the cables are located in the installation chamber, a bearing block is installed in the installation chamber, and the cables are lifted by the bearing block; a transmission shaft is installed on the protection box, the rotating shaft and the transmission shaft are connected with each other through a transmission belt; a sliding groove is formed in the side wall of the protection box, a protection plate is installed in the sliding groove, a cam is installed on the transmission shaft, and the cam pushes the protection plate to move towards the direction of closing the installation chamber; the application has the advantages of simple structure, the cables, cable connectors and interfaces in the electrical cabinet can be fixed, the safety of the electrical cabinet is improved, and potential safety hazards can be avoided.

Description

Technical Field

[0001] This invention belongs to the field of electrical cabinet technology, specifically an electrical cabinet with interface protection device. Background Technology

[0002] Electrical cabinets are made of steel and are used to protect components and ensure their proper functioning. The materials used to manufacture electrical cabinets are generally divided into hot-rolled steel plates and cold-rolled steel plates. Cold-rolled steel plates are softer than hot-rolled steel plates and are more suitable for manufacturing electrical cabinets. Electrical cabinets have a wide range of applications, mainly in the chemical industry, environmental protection industry, and power systems, among others.

[0003] Therefore, while current electrical cabinets generally meet people's needs, they lack protective devices at their internal interfaces, and the wires are not securely fixed inside, which can easily lead to wire tangling, leakage, and low safety. This poses certain dangers and safety hazards to installers and operators. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes an electrical cabinet with an interface protection device to fix the cables, cable connectors, and interfaces inside the electrical cabinet, improve the safety of the electrical cabinet, and avoid potential safety hazards.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides an electrical cabinet with an interface protection device, comprising a cabinet body and a cabinet door. The cabinet door is mounted on the cabinet body via a pivot. A protective box is installed inside the cabinet body. Cables inside the cabinet body pass through the protective box. The connectors on the cables are located inside the protective box. An installation chamber is provided on the protective box. The cables are located inside the installation chamber. A support block is installed inside the installation chamber. The support block is made of an elastic insulating material. The cables are supported by the support block.

[0006] The protective box is equipped with a drive shaft, and the rotating shaft and the drive shaft are connected to each other by a drive belt. The inner wall of the cabinet is provided with a drive groove, the lower end of the drive shaft is located in the drive groove, and the drive belt is located in the drive groove.

[0007] The protective box has a sliding groove on its side wall, and a protective plate is installed in the sliding groove. A cam is installed on the drive shaft, and the cam pushes the protective plate to move toward the closed installation chamber. The protective plate and the protective box are made of insulating material.

[0008] Preferably, a fixed magnetic block is installed on the side wall of the slide, and a movable magnetic block is installed on the protective plate. The movable magnetic block is located on the side of the protective plate closer to the cam. The fixed magnetic block and the movable magnetic block correspond to each other and repel each other.

[0009] Preferably, the projection of the slide on the horizontal plane is L-shaped, the slide includes a horizontal groove and a vertical groove, the protective plate moves along the horizontal groove to close the installation chamber, and the protective plate moves along the vertical groove to reduce the size of the enclosed space inside the installation chamber;

[0010] The cabinet door is equipped with an elastic plug, which corresponds to the installation chamber. When the cabinet door is closed, the elastic plug is inserted into the installation chamber. After the protective plate closes the installation chamber, the elastic plug pushes the protective plate to move along the vertical groove. The side of the protective plate facing the installation chamber contacts the cable or connector.

[0011] Preferably, an entry hole is provided on the side wall of the installation chamber, through which the cable passes into the installation chamber. A sealing ring is installed in the entry hole. The sealing ring is made of elastic silicone material and is fitted onto the cable.

[0012] During use, the operator attaches the sealing ring to the cable and then installs it into the entry hole on the side wall of the installation chamber, thus completely sealing the entry hole. This prevents impurities or moisture from entering the installation chamber through the entry hole, which could compromise the chamber's airtightness and allow cables or cable connectors inside to remain exposed to the external environment, affecting the protective effect of the protective box. Furthermore, because the sealing ring is made of elastic silicone, the cable entering the installation chamber will not directly contact the side wall of the entry hole, effectively preventing wear and tear on the cable surface during installation and use, minimizing the possibility of accidents.

[0013] Preferably, the sealing ring has an internal cavity, a sealing airbag is installed on the side wall of the vertical groove, the sealing airbag is triangular in shape with its tip pointing towards the horizontal groove, and a vent is provided in the side wall of the installation chamber, and the sealing airbag and the cavity are interconnected through the vent.

[0014] Preferably, a fixing airbag is installed on the surface of the protective plate, the fixing airbag is located on the side of the protective plate facing the cable, and the fixing airbag contacts and squeezes the cable or connector.

[0015] Preferably, the surface of the fixing airbag is provided with stripes, the stripes are located on the side of the fixing airbag facing the cable, the stripes are parallel to each other, and the length direction of the stripes is perpendicular to the length direction of the cable.

[0016] Preferably, the fixed airbag is filled with a liquid extinguishing agent, which is either carbon tetrachloride or perfluorohexanone.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The electrical cabinet with interface protection device described in this invention, by setting a cam, a protective plate, a slide groove and an installation chamber, places the cables, connectors and interfaces inside the electrical cabinet in the installation chamber. Then, the cam pushes the protective plate to close the installation chamber, thereby protecting the cables, cable connectors and interfaces, improving the safety of the electrical cabinet and avoiding safety hazards.

[0019] 2. The electrical cabinet with interface protection device described in this invention, by setting a vertical slide groove, an elastic plug, and a fixing airbag, allows the protective plate to drive the fixing airbag to further fix the cables, cable joints, and interfaces in the installation room, ensuring the stability of the cables, cable joints, and interfaces, improving the protection effect and the safety of the electrical cabinet, and avoiding safety hazards. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a front view of the electrical cabinet of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the electrical cabinet of the present invention;

[0023] Figure 3 This is a schematic diagram of the protective box in this invention when the cabinet door is not fully closed;

[0024] Figure 4 This is a schematic diagram of the protective box in this invention when the cabinet door is completely closed;

[0025] Figure 5 This is a schematic diagram of the structure of the protective box after the protective plate is removed in this invention;

[0026] Figure 6 This is a partial structural schematic diagram of the airbag fixed inside the protective box in this invention;

[0027] Figure 7 yes Figure 3 Enlarged view of a portion of point A in the middle;

[0028] In the diagram: Cabinet 1, Transmission groove 11, Transmission belt 12, Bearing block 13, Vent hole 14, Cabinet door 2, Elastic plug 21, Rotating shaft 22, Protective box 3, Installation chamber 31, Transmission shaft 4, Cam 41, Cable 5, Sealing ring 51, Sealing airbag 52, Slide 6, Horizontal groove 61, Vertical groove 62, Fixed magnet 7, Moving magnet 71, Protective plate 8, Fixed airbag 81, Stripe 82. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] like Figures 1 to 7 As shown, the electrical cabinet with interface protection device of the present invention includes a cabinet body 1 and a cabinet door 2. The cabinet door 2 is mounted on the cabinet body 1 via a pivot 22. A protective box 3 is installed inside the cabinet body 1. Cables 5 inside the cabinet body 1 pass through the protective box 3. The connectors on the cables 5 are located inside the protective box 3. An installation chamber 31 is provided on the protective box 3. The cables 5 are located in the installation chamber 31. A support block 13 is installed inside the installation chamber 31. The support block 13 is made of elastic insulating material. The cables 5 are supported by the support block 13.

[0031] The protective box 3 is equipped with a drive shaft 4. The rotating shaft 22 and the drive shaft 4 are connected to each other by a drive belt 12. A drive groove 11 is provided on the inner wall of the cabinet 1. The lower end of the drive shaft 4 is located in the drive groove 11, and the drive belt 12 is located in the drive groove 11.

[0032] The protective box 3 has a sliding groove 6 on its side wall, and a protective plate 8 is installed in the sliding groove 6. A cam 41 is installed on the drive shaft 4. The cam 41 pushes the protective plate 8 to move toward the closed installation chamber 31. The protective plate 8 and the protective box 3 are made of insulating material.

[0033] During operation, with cabinet door 2 open, cam 41 on drive shaft 4 does not push the protective plate 8 on protective box 3. At this time, mounting chamber 31 on protective box 3 is open. Simultaneously, the operator inserts cable 5 from the electrical cabinet into mounting chamber 31 in protective box 3. Then, the two cable segments 5 are connected to form a connector, ensuring the connector is located in mounting chamber 31. After completing the cable wiring and connection, the operator manually closes cabinet door 2, causing door 2 to rotate shaft 22. Since shaft 22 and drive shaft 4 are connected via drive belt 12, drive shaft 4 rotates synchronously, causing cam 41 to rotate and gradually exert force on protective plate 8. This causes protective plate 8 to move along the direction of closing mounting chamber 31 within slide groove 6 until cabinet door 2 is closed. Cam 41 then pushes protective plate 8 to close mounting chamber 31, thus protecting the cable 5 and its connector within the electrical cabinet, preventing damage during use. The connectors of cable 5 are directly exposed and easily affected by external factors. The protective box 3 also protects cable 5 and its connectors, preventing small animals from entering the cabinet 1 and accidentally touching the cables 5 or connectors, which could cause cable malfunction or leakage. This ensures the normal operation of the electrical cabinet and reduces the possibility of safety accidents. Furthermore, since the protective plate 8 moves directly within the slide rail 6 and seals the installation chamber 31, and neither the protective plate 8 nor the protective box 3 has a reset device, the protective plate 8 will not move automatically to open the installation chamber 31 after the cabinet door 2 is opened during routine inspections and maintenance. If the operator needs to inspect or maintain the cables 5 and connectors, they must manually move the protective plate 8 to open the installation chamber 31. This ensures that the operator must manually operate the electrical cabinet during inspections and maintenance, reducing the likelihood of direct contact with the cables 5 or connectors, improving the safety of the electrical cabinet, and lowering the possibility of safety accidents.

[0034] In one embodiment of the present invention, a fixed magnetic block 7 is installed on the side wall of the slide 6, and a movable magnetic block 71 is installed on the protective plate 8. The movable magnetic block 71 is located on the side of the protective plate 8 near the cam 41. The fixed magnetic block 7 and the movable magnetic block 71 correspond to each other and repel each other.

[0035] After cabinet door 2 is closed, protective plate 8 is pushed by cam 41, causing protective plate 8 to seal the mounting chamber 31 on protective box 3. At this time, the movable magnetic block 71 on protective plate 8 and the fixed magnetic block 7 in slide 6 are directly opposite each other. Due to the mutual repulsion between fixed magnetic block 7 and movable magnetic block 71, the protective plate 8 moves further under the action of magnetic repulsion. This prevents cam 41 from being unable to completely push protective plate 8 above mounting chamber 31 due to the wall thickness of mounting chamber 31, thus completely sealing mounting chamber 31. This would result in a gap between the side of mounting chamber 31 away from cam 41 and protective plate 8, affecting the protective effect of mounting chamber 31 on cables 5 and connectors. At the same time, when protective plate 8 stops moving, fixed magnetic block 7 is located between movable magnetic block 71 and cam 41. Meanwhile, when the staff opens cabinet door 2, they can inspect the electrical cabinet. During maintenance, the protective plate 8 will not easily move due to the magnetic repulsion between the fixed magnetic block 7 and the movable magnetic block 71. This prevents the protective plate 8 from being affected by external vibrations or impacts when the staff inspects and maintains the electrical cabinet, thus avoiding the possibility of the protective plate 8 moving before the staff manually operates it, causing the installation chamber 31 to open and increasing the possibility of the staff accidentally contacting the cable 5 or connector, which could easily cause a safety accident. Alternatively, after the installation chamber 31 is opened, the protective plate 8 may move on its own, causing the installation chamber 31 to close, affecting the staff's operation. Similarly, due to the magnetic repulsion between the fixed magnetic block 7 and the movable magnetic block 71, the staff needs to overcome the magnetic repulsion to move the protective plate 8 when manually operating it, which can effectively avoid the staff's misoperation and reduce the possibility of safety accidents.

[0036] In one embodiment of the present invention, the projection of the slide 6 on the horizontal plane is L-shaped. The slide 6 includes a horizontal groove 61 and a vertical groove 62. The protective plate 8 moves along the horizontal groove 61 to close the installation chamber 31, and the protective plate 8 moves along the vertical groove 62 to reduce the size of the closed space inside the installation chamber 31.

[0037] An elastic plug 21 is installed on the cabinet door 2. The elastic plug 21 corresponds to the installation chamber 31. When the cabinet door 2 is closed, the elastic plug 21 is inserted into the installation chamber 31. After the protective plate 8 closes the installation chamber 31, the elastic plug 21 pushes the protective plate 8 to move along the vertical groove 62. The side of the protective plate 8 facing the installation chamber 31 contacts the cable 5 or connector.

[0038] As cabinet door 2 begins to close, cam 41 gradually pushes protective plate 8 to move in horizontal groove 61, causing protective plate 8 to move towards the closed installation chamber 31. Simultaneously, while protective plate 8 closes installation chamber 31, cabinet door 2 is not yet fully closed. At this point, elastic plug 21 on cabinet door 2 reaches the entrance of installation chamber 31, and the end of elastic plug 21 furthest from cabinet door 2 begins to contact protective plate 8. Then, as cabinet door 2 continues to close, elastic plug 21 begins to push protective plate 8 along vertical groove 62, causing protective plate 8 to compress the enclosed space within installation chamber 31, reducing its size. After cabinet door 2 is fully closed, elastic plug 21 pushes protective plate 8 along vertical groove 62 to its limit position. At this point, protective plate 8 contacts cable 5 or cable 5's connector within installation chamber 31. Since a bearing block 13 is installed inside installation chamber 31 and cable 5 is subjected to… The support block 13 holds the cable 5 in place, ensuring it is secured by the combined action of the protective plate 8 and the support block 13. This prevents the cable 5 from swaying within the electrical cabinet and protective box 3 during use, which could lead to wear, contact, leaks, short circuits, or safety accidents. Simultaneously, after the cabinet door 2 is closed, the protective plate 8 is pushed into the vertical groove 62 by the elastic plug 21. During use or maintenance of the electrical cabinet, the protective plate 8 is restricted by the vertical groove 62, making it difficult for it to move along the length of the horizontal groove 61. This further ensures the sealing effect of the protective plate 8 on the installation chamber 31, preventing it from moving back and forth due to external vibrations or impacts during cabinet operation. This would cause wear on the protective plate 8 and the groove 6, affecting the protective effect of the protective box 3 on the cable 5 or connectors.

[0039] In one embodiment of the present invention, an entry hole is provided on the side wall of the installation chamber 31, and the cable 5 passes through the entry hole into the installation chamber 31. A sealing ring 51 is installed in the entry hole. The sealing ring 51 is made of elastic silicone material and is sleeved on the cable 5.

[0040] During use, the operator attaches the sealing ring 51 to the cable 5, and then installs the sealing ring 51 into the entry hole on the side wall of the installation chamber 31, thus completely sealing the entry hole. This prevents impurities or moisture from entering the installation chamber 31 through the entry hole, which would affect the airtightness of the installation chamber 31. Otherwise, the cable 5 or its connector inside the installation chamber 31 would still be affected by the external environment, thus compromising the protective effect of the protective box 3 on the connector or interface. At the same time, because the sealing ring 51 is made of elastic silicone material, the cable 5 inserted into the installation chamber 31 will not directly contact the side wall of the entry hole during use. This effectively prevents wear and tear on the surface of the cable 5 at the side wall of the entry hole during installation and use, avoiding damage to the surface of the cable 5 and minimizing the possibility of safety accidents.

[0041] In one embodiment of the present invention, the sealing ring 51 has a cavity inside, and a sealing airbag 52 is installed on the side wall of the vertical groove 62. The sealing airbag 52 is triangular in shape and its tip faces the direction of the horizontal groove 61. A vent hole 14 is provided in the side wall of the mounting chamber 31, and the sealing airbag 52 and the cavity are interconnected through the vent hole 14.

[0042] During the closing process of cabinet door 2, when the elastic plug 21 pushes the protective plate 8 to move within the vertical groove 62, due to the triangular shape of the sealing airbag 52, the protective plate 8 can smoothly contact and compress the sealing airbag 52, causing the pressure inside the sealing airbag 52 to increase. The gas inside the airbag enters the cavity through the vent hole 14. After the gas inside the sealing airbag 52 enters the cavity, the pressure inside the cavity increases, causing the sealing ring 51 to expand, fully adhering to the surface of the cable 5 and filling the side wall of the entry hole, so that the entry hole on the installation chamber 31 is completely sealed, preventing external impurities and moisture from entering the installation chamber 31. At the same time, due to the presence of the sealing airbag 52, the outer diameter of the sealing ring 51 can be less than or equal to the inner diameter of the entry hole, and the inner diameter of the sealing ring 51 can be greater than or equal to the diameter of the cable 5. Thus, during the installation process, it is convenient for the staff to install the sealing ring 51 into the entry hole and to attach the sealing ring 51 to the cable 5, avoiding the situation where the inner diameter of the sealing ring 51 is too small or the outer diameter is too large, which would make installation difficult.

[0043] In one embodiment of the present invention, a fixing airbag 81 is installed on the surface of the protective plate 8. The fixing airbag 81 is located on the side of the protective plate 8 facing the cable 5. The fixing airbag 81 contacts and squeezes the cable 5 or the connector.

[0044] When cabinet door 2 is closed and elastic plug 21 pushes protective plate 8 to its limit position along vertical groove 62, fixing airbag 81 on protective plate 8 contacts and squeezes cable 5 or connector. At the same time, fixing airbag 81 fully adheres to the surface of cable 5 or connector and fills the space between protective plate 8 and bearing block 13 in installation chamber 31, further fixing cable 5 or connector in installation chamber 31. This prevents the contact area between protective plate 8 and cable 5 or connector from being too small, which could lead to excessive pressure on cable 5 or connector and damage. Simultaneously, the adhesion and filling effect of fixing airbag 81 also prevents cable 5 or connector from being damaged within installation chamber 31. Movement causes wear and tear, affecting the electrical cabinet's protection of cables 5 or interfaces. Furthermore, during use, the fitting and filling effect of the fixing airbag 81 further seals the gap between the protective plate 8 and the side wall of the installation chamber 31, improving the sealing effect of the protective plate 8 after sealing the installation chamber 31. This prevents external impurities and moisture from entering the installation chamber 31 through gaps or seams, causing cables 5 or connectors to come into contact with external impurities or moisture, resulting in stains on the surface of cables 5 or connectors, creating a flashover hazard, and affecting the electrical cabinet's protection of cables 5 or interfaces.

[0045] In one embodiment of the present invention, stripes 82 are provided on the surface of the fixing airbag 81. The stripes 82 are located on the side of the fixing airbag 81 facing the cable 5. The stripes 82 are parallel to each other, and the length direction of the stripes 82 is perpendicular to the length direction of the cable 5.

[0046] By setting stripes 82 on the surface of the airbag facing the cable 5, a tiny gap can be formed between the airbag and the cable 5, preventing the airbag and the cable 5 from being completely fitted together. This would prevent the heat generated by the cable 5 or connector during operation from being dissipated quickly, causing the local temperature of the cable 5 or connector to be too high, creating a safety hazard. At the same time, the stripes 82 facilitate the dissipation of heat generated by the cable 5 or connector during operation, preventing the local temperature from being too high and affecting the fixing airbag 81. This would cause the area on the fixing airbag 81 corresponding to the area on the cable 5 or connector with excessive temperature to age, affecting the service life of the fixing airbag 81.

[0047] In one embodiment of the present invention, the fixed airbag 81 is filled with a liquid fire extinguishing agent, which is either carbon tetrachloride or perfluorohexanone.

[0048] During use, in extreme circumstances leading to a fire in the installation chamber 31, the fixed airbag 81 will rupture, releasing the extinguishing agent inside to extinguish or delay the spread of the fire, giving staff more time to handle the situation and reducing losses. Simultaneously, when a fire breaks out in other parts of the electrical cabinet, the temperature inside the cabinet rises rapidly. Because the liquid extinguishing agent inside the fixed airbag 81 has a relatively low boiling point, it vaporizes quickly under the rapidly rising temperature inside the electrical cabinet, gradually inflating and rupturing the fixed airbag 81, releasing the extinguishing agent to delay the fire and further reduce losses. Furthermore, during normal use, the liquid extinguishing agent inside the fixed airbag 81 can absorb heat generated at the cables 5 or joints, accelerating heat dissipation, preventing localized overheating, affecting the normal use of the electrical cabinet, and reducing the possibility of safety accidents.

[0049] The specific workflow is as follows:

[0050] During operation, with cabinet door 2 open, cam 41 on drive shaft 4 does not push the protective plate 8 on protective box 3. At this time, installation chamber 31 on protective box 3 is open. Simultaneously, the operator inserts cable 5 from the electrical cabinet into installation chamber 31 in protective box 3. Then, the two cable segments 5 are connected to form a joint, so that the joint of cable 5 is located in installation chamber 31. After the operator completes the wiring and connection of cable 5, the operator manually closes cabinet door 2, causing cabinet door 2 to drive shaft 22 to start rotating. Since shaft 22 and drive shaft 4 are connected by drive belt 12, drive shaft 4 starts to rotate synchronously, thereby driving cam 41 to rotate, gradually exerting force on protective plate 8, causing protective plate 8 to move along the direction of closing installation chamber 31 in slide groove 6 until cabinet door 2 is closed. Then, cam 41 pushes protective plate 8 to close installation chamber 31.

[0051] When the cabinet door 2 is closed, the protective plate 8 is pushed by the cam 41, which causes the protective plate 8 to seal the installation chamber 31 on the protective box 3. At this time, the movable magnetic block 71 on the protective plate 8 and the fixed magnetic block 7 in the slide 6 are directly opposite each other. Due to the mutual repulsion between the fixed magnetic block 7 and the movable magnetic block 71, the protective plate 8 moves further under the action of magnetic repulsion, completely sealing the installation chamber 31.

[0052] As the cabinet door 2 begins to close, the cam 41 gradually pushes the protective plate 8 to move in the horizontal groove 61, causing the protective plate 8 to move towards the closed installation chamber 31. At the same time, when the protective plate 8 closes the installation chamber 31, the cabinet door 2 is not completely closed. At this time, the elastic plug 21 on the cabinet door 2 just reaches the entrance of the installation chamber 31, and the end of the elastic plug 21 away from the cabinet door 2 begins to contact the protective plate 8. Then, as the cabinet door 2 continues to close, the elastic plug 21 begins to push the protective plate 8 to move along the vertical groove 62, causing the protective plate 8 to squeeze the closed space in the installation chamber 31 and reduce the size of the closed space. After the cabinet door 2 is completely closed, the elastic plug 21 pushes the protective plate 8 along the vertical groove 62 to the limit position. At this time, the protective plate 8 contacts the cable 5 or the connector of the cable 5 in the position facing the installation chamber 31. Since the support block 13 is installed in the installation chamber 31 and the cable 5 is supported by the support block 13, the cable 5 is fixed under the joint action of the protective plate 8 and the support block 13.

[0053] During use, the staff will put the sealing ring 51 on the cable 5, and then install the sealing ring 51 into the entry hole on the side wall of the installation chamber 31 to completely seal the entry hole.

[0054] During the closing process of cabinet door 2, when the elastic plug 21 pushes the protective plate 8 to move in the vertical groove 62, the protective plate 8 can smoothly contact and squeeze the sealing airbag 52 because the sealing airbag 52 is triangular in shape, which increases the pressure inside the sealing airbag 52. The gas inside the airbag enters the cavity through the vent 14. After the gas inside the sealing airbag 52 enters the cavity, the pressure inside the cavity increases, which causes the sealing ring 51 to expand, fully adhering to the surface of the cable 5 and filling the side wall of the entry hole, so that the entry hole on the installation chamber 31 is completely sealed.

[0055] When the cabinet door 2 is closed and the elastic plug 21 pushes the protective plate 8 to its limit position along the vertical groove 62, the fixing airbag 81 on the protective plate 8 contacts and squeezes the cable 5 or connector. At the same time, the fixing airbag 81 fully adheres to the surface of the cable 5 or connector and fills the space between the protective plate 8 and the bearing block 13 in the installation chamber 31, further fixing the cable 5 or connector in the installation chamber 31. Meanwhile, during use, due to the adhesion and filling effect of the fixing airbag 81, the gap between the protective plate 8 and the side wall of the installation chamber 31 is further sealed.

[0056] By setting stripes 82 on the surface of the airbag facing the cable 5, a tiny gap can be formed between the airbag and the cable 5.

[0057] During use, in extreme circumstances that lead to a fire in the installation chamber 31, the fixed airbag 81 will rupture, releasing the extinguishing agent inside to extinguish or delay the spread of the fire. At the same time, when a fire occurs in other parts of the electrical cabinet, the temperature inside the electrical cabinet rises rapidly. Because the boiling point of the liquid extinguishing agent inside the fixed airbag 81 is relatively low, it vaporizes rapidly under the rapidly rising temperature inside the electrical cabinet, gradually expanding and rupturing the fixed airbag 81, thereby releasing the extinguishing agent.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrical cabinet with an interface protection device, comprising a cabinet body (1) and a cabinet door (2), wherein the cabinet door (2) is mounted on the cabinet body (1) via a pivot (22), a protective box (3) is installed inside the cabinet body (1), and cables (5) inside the cabinet body (1) pass through the protective box (3), wherein the connectors on the cables (5) are located inside the protective box (3), characterized in that: The protective box (3) has an installation chamber (31) and the cable (5) is located in the installation chamber (31). A support block (13) is installed inside the installation chamber (31) and the cable (5) is supported by the support block (13). The protective box (3) is equipped with a drive shaft (4), and the rotating shaft (22) and the drive shaft (4) are connected to each other by a drive belt (12); The protective box (3) has a sliding groove (6) on its side wall, and a protective plate (8) is installed in the sliding groove (6). A cam (41) is installed on the drive shaft (4), and the cam (41) pushes the protective plate (8) to move toward the closed installation chamber (31). A fixed magnetic block (7) is installed on the side wall of the slide (6), and a movable magnetic block (71) is installed on the protective plate (8). The fixed magnetic block (7) and the movable magnetic block (71) correspond to each other and repel each other. The projection of the slide (6) on the horizontal plane is L-shaped. The slide (6) includes a horizontal groove (61) and a vertical groove (62). The protective plate (8) moves along the horizontal groove (61) to close the installation chamber (31). The protective plate (8) moves along the vertical groove (62) to reduce the size of the enclosed space inside the installation chamber (31). An elastic plug (21) is installed on the cabinet door (2). The elastic plug (21) corresponds to the installation chamber (31). The elastic plug (21) pushes the protective plate (8) to move along the vertical groove (62). The protective plate (8) contacts the cable (5) or connector on the side facing the installation chamber (31).

2. The electrical cabinet with interface protection device according to claim 1, characterized in that: An entry hole is provided on the side wall of the installation chamber (31), through which the cable (5) passes into the installation chamber (31). A sealing ring (51) is installed in the entry hole and is fitted onto the cable (5).

3. An electrical cabinet with an interface protection device according to claim 2, characterized in that: The sealing ring (51) has a cavity inside, a sealing airbag (52) is installed on the side wall of the vertical groove (62), and a vent hole (14) is opened in the side wall of the installation chamber (31). The sealing airbag (52) and the cavity are connected to each other through the vent hole (14).

4. An electrical cabinet with an interface protection device according to claim 1, characterized in that: A fixing airbag (81) is installed on the surface of the protective plate (8), and the fixing airbag (81) contacts and squeezes the cable (5) or connector.

5. An electrical cabinet with an interface protection device according to claim 4, characterized in that: The surface of the fixed airbag (81) is provided with stripes (82), and the stripes (82) are parallel to each other.

6. An electrical cabinet with an interface protection device according to claim 4, characterized in that: The fixed airbag (81) is filled with liquid fire extinguishing agent.

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