Protective door for plug-in assembly channel and power distribution cabinet

Abstract

The embodiment of the utility model provides a protective door for a plug-in assembly channel and a power distribution cabinet. A shell of the protective door comprises a first opening and a second opening which are formed in the two opposite sides. A pair of shields is disposed at the second opening and is slidably coupled to the housing, respectively. Each shielding piece is suitable for being switched between an overlapping position and a staggered position, and each shielding piece comprises a through hole. Under the condition that each shielding piece in the pair of shielding pieces is in the overlapping position, the through holes of the pair of shielding pieces are at least partially overlapped and are suitable for the insertion of the busbar. And under the condition that each shielding piece in the pair of shielding pieces is in the staggered position, the through holes of the pair of shielding pieces are staggered from each other. And each shielding piece in the pair of shielding pieces is suitable for moving from the staggered position to the overlapping position under the driving of the drawer assembly. The pair of elastic members are each coupled to a corresponding one of the pair of shielding members, and each elastic member is adapted to apply a force to the corresponding shielding member to move the shielding member toward the staggered position.

Description

Technical Field

[0001] The embodiments disclosed herein relate generally to the field of electrical equipment, and more particularly to a protective door for a plug-in component channel and a distribution cabinet. Background Technology

[0002] Drawer-type distribution cabinets are particularly common. By installing two or more pull-out drawer assemblies on the same layer, the distribution unit can be modularized and standardized. Each drawer assembly typically contains electrical components such as circuit breakers, contactors, relays, electricity meters, fuses, and transformers. Each drawer functions as an independent functional unit, allowing for easy installation, replacement, or maintenance without affecting the normal operation of other drawers. Within the drawer-type distribution cabinet, the busbars inside the drawer assembly can be connected to the vertical power lines inside the cabinet via main circuit plug-in components. Utility Model Content

[0003] In a first aspect of this disclosure, a protective door for a connector assembly channel is provided. The protective door includes: a housing including a first opening and a second opening disposed on opposite sides, wherein the first opening is adapted for insertion of a main circuit connector assembly into the interior of the housing; a pair of shields disposed at the second opening and slidably coupled to the housing, each shield being adapted to switch between an overlapping position and a staggered position, and each shield including a through-hole, wherein when each shield in the pair is in the overlapping position, the through-holes of the pair of shields at least partially overlap and are adapted for insertion of a busbar, and when each shield in the pair is in the staggered position, the through-holes of the pair of shields are staggered from each other, and each shield in the pair is adapted to move from the staggered position to the overlapping position under the actuation of a drawer assembly; and a pair of resilient members, each coupled to a corresponding shield in the pair of shields, and each resilient member being adapted to apply a force to the corresponding shield causing the shield to move to the staggered position.

[0004] In some embodiments, each cover further includes a drive portion disposed on the side of the cover away from the first opening, and the drive portion includes a first guide ramp adapted to engage with the drawer assembly.

[0005] In some embodiments, each shielding member further includes a stop portion disposed on the side of the shielding member facing the second opening, to restrict the separation of the respective shielding member from the housing.

[0006] In some embodiments, the stop includes a second guide ramp, which includes a first end away from the other block and a second end near the other block, the first end being closer to the first opening than the second end.

[0007] In some embodiments, the housing further includes a groove disposed at the second opening, to which a pair of shielding members are slidably coupled.

[0008] In some embodiments, adjacent ends of the paired blocking members are provided with a third guide ramp to guide the adjacent ends of the paired blocking members to be staggered from each other.

[0009] In some embodiments, the housing further includes a pair of support portions disposed at the second opening and respectively coupled to a pair of elastic members.

[0010] In some embodiments, the housing further includes a pair of convex ribs disposed inside the housing, and each convex rib has a support surface at one end near the second opening, the support surfaces of the pair of convex ribs respectively abutting against a pair of blocking members.

[0011] In some embodiments, the housing further includes a pair of connecting portions disposed at the first opening.

[0012] In a second aspect of this disclosure, a power distribution cabinet is provided. The power distribution cabinet includes: a cabinet body; a drawer assembly detachably coupled to the cabinet body; a plurality of vertical bars disposed inside the cabinet body; a vertical bar guard disposed on the side of the plurality of vertical bars facing the drawer assembly and coupled to the cabinet body, the vertical bar guard including a plurality of plug-in component channels; a plurality of main circuit plug-in components, respectively disposed within the plurality of plug-in component channels and coupled to the vertical bar guard, and respectively electrically connected to the plurality of vertical bars; and a plurality of protective doors according to a first aspect of this disclosure, coupled to the side of the vertical bar guard facing the drawer assembly and respectively corresponding to the plurality of plug-in component channels.

[0013] In embodiments of this disclosure, the protective door includes a housing, a pair of blocking members, and a pair of resilient members. The housing includes a first opening and a second opening located on opposite sides, wherein the first opening is adapted for insertion of a main circuit connector assembly into the interior of the housing. The pair of blocking members are disposed at the second opening and are slidably coupled to the housing, respectively. Each blocking member is adapted to switch between an overlapping position and a staggered position, and each blocking member includes a through-hole. When each of the blocking members in the pair is in the overlapping position, the through-holes of the pair of blocking members at least partially overlap and are adapted for insertion of a busbar. When each of the blocking members in the pair is in the staggered position, the through-holes of the pair of blocking members are staggered from each other. Each blocking member in the pair is adapted to move from the staggered position to the overlapping position under the actuation of a drawer assembly. The pair of resilient members are each coupled to a corresponding blocking member in the pair of blocking members, and each resilient member is adapted to apply a force to the corresponding blocking member to move the blocking member to the staggered position. Using this arrangement, as the drawer assembly is pushed into the distribution cabinet, it drives each of the paired blocking elements to move from a staggered position to an overlapping position. This allows the busbars inside the drawer assembly to be inserted through the through holes of the paired blocking elements, thus achieving electrical connection between the busbars, the main circuit connectors, and the vertical bars. As the drawer assembly is pulled out of the distribution cabinet, it separates from the protective door's blocking elements. Under the action of the paired elastic elements, the through holes of the paired blocking elements are staggered, allowing the protective door to form an insulation barrier at the main circuit connectors. This prevents operators from accidentally touching the main circuit connectors during maintenance, improving the safety of the distribution cabinet.

[0014] It should be understood that the content described in this section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0015] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0016] Figure 1 A perspective view of a protective door for a plug-in component channel according to an embodiment of the present disclosure is shown, wherein each shield is in a staggered position;

[0017] Figure 2 A perspective view of a protective door for a plug-in component channel according to an embodiment of the present disclosure is shown, wherein each shield is in an overlapping position;

[0018] Figure 3 An exploded view of a protective door for a plug-in component channel according to an embodiment of the present disclosure is shown, in which a second opening is shown;

[0019] Figure 4 An exploded view of a protective door for a plug-in component channel according to an embodiment of the present disclosure is shown, wherein a first opening is shown;

[0020] Figure 5 A perspective view of the drawer assembly and vertical row protection member according to an embodiment of the present disclosure is shown;

[0021] Figure 6 A perspective view of the drawer assembly, protective door, and vertical row protective member according to an embodiment of the present disclosure is shown; and

[0022] Figure 7 A perspective view of the drawer assembly, main circuit plug-in assembly, and vertical row protection member according to an embodiment of the present disclosure is shown.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100. Safety door;

[0025] 10. Shell; 11. First opening; 12. Second opening; 13. Slide groove; 14. Support part; 15. Protruding rib; 151. Support surface; 16. Connecting part;

[0026] 20. Blocking component; 21. Driving part; 211. First guide slope; 22. Stop part; 221. Second guide slope; 2211. First end; 2212. Second end; 23. Third guide slope; 24. Through hole;

[0027] 30. Elastic components;

[0028] 410. Drawer assembly; 411. Busbar;

[0029] 420. Vertical row protective components; 421. Plug-in component channel;

[0030] 430. Main circuit plug-in assembly. Detailed Implementation

[0031] Preferred embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0032] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.

[0033] In some conventional drawer-type distribution cabinets, the main circuit plug-in assembly is located on the side of the vertical row facing the drawer assembly and is connected to the vertical row. When operators pull the drawer assembly out of the distribution cabinet for maintenance or routine inspection, they may accidentally touch the main circuit plug-in assembly, resulting in electric shock and equipment damage.

[0034] Embodiments of this disclosure provide a protective door for a plug-in assembly channel and a distribution cabinet. The protective door includes a housing, a pair of shielding members, and a pair of resilient members. The housing includes a first opening and a second opening located on opposite sides, wherein the first opening is adapted for insertion of a main circuit plug-in assembly into the interior of the housing. The pair of shielding members are disposed at the second opening and are slidably coupled to the housing, respectively. Each shielding member is adapted to switch between an overlapping position and a staggered position, and each shielding member includes a through-hole. When each of the pair of shielding members is in the overlapping position, the through-holes of the pair of shielding members at least partially overlap and are adapted for insertion of a busbar. When each of the pair of shielding members is in the staggered position, the through-holes of the pair of shielding members are staggered from each other. Each of the pair of shielding members is adapted to move from the staggered position to the overlapping position under the actuation of a drawer assembly. The pair of resilient members are each coupled to a corresponding shielding member of the pair of shielding members, and each resilient member is adapted to apply a force to the corresponding shielding member to move the shielding member to the staggered position.

[0035] Using this arrangement, as the drawer assembly is pushed into the distribution cabinet, it drives each of the paired blocking elements to move from a staggered position to an overlapping position. This allows the busbars inside the drawer assembly to be inserted through the through holes of the paired blocking elements, thus achieving electrical connection between the busbars, the main circuit connector, and the vertical busbars. As the drawer assembly is pulled out of the distribution cabinet, it separates from the protective door's blocking elements. Under the action of the paired elastic elements, the through holes of the paired blocking elements are staggered, allowing the protective door to form an insulation barrier at the main circuit connector, thereby preventing operators from accidentally touching the main circuit connector during maintenance and improving the safety of the distribution cabinet. The following will combine... Figures 1 to 7 The principles of this disclosure will be described in detail below.

[0036] like Figures 1 to 4As shown, the protective door 100 includes a housing 10, a pair of shielding members 20, and a pair of elastic members 30. The housing 10 can be made of insulating material, possessing not only excellent electrical insulation properties but also sufficient mechanical strength to ensure structural stability. The housing 10 has a hollow structure to protect internal components. The housing 10 includes a first opening 11 and a second opening 12 located on opposite sides. The first opening 11 and the second opening 12 communicate with the interior of the housing 10, thereby forming a channel for electrical connection. The main circuit plug-in assembly 430 can be inserted into the housing 10 through the first opening 11. The size and shape of the first opening 11 are adapted to the size and shape of the main circuit plug-in assembly 430. After the main circuit plug-in assembly 430 is inserted into the housing 10, it fits snugly against the inner wall of the housing 10, thus preventing loosening or misalignment and facilitating installation and maintenance.

[0037] In some embodiments, the first opening 11 may be customized according to the size of the main circuit plug-in assembly 430 actually used, such as diameter, length and specific connector interface.

[0038] In some embodiments, the housing 10 may be mounted on the vertical bar guard 420 inside the distribution cabinet and disposed on the side of the vertical bar guard 420 facing the drawer assembly 410. With this arrangement, as the drawer assembly 410 is pushed into the distribution cabinet, the busbar 411 inside the drawer assembly 410 can pass through the second opening 12 and dock with the main circuit plug-in assembly 430 inside the housing 10 to achieve power transmission.

[0039] In some embodiments, the housing 10 may include ventilation holes or be made of a breathable material to keep the operating temperature of the internal components within an appropriate range, thereby extending service life and improving system reliability.

[0040] like Figures 1 to 4 As shown, a pair of shielding members 20 are disposed at the second opening 12 of the housing 10 to provide safety protection for the main circuit plug-in assembly 430. Each shielding member 20 can be connected to the housing 10 via a sliding mechanism and can flexibly switch between overlapping and staggered positions. As an example, one shielding member 20 of the pair is slidably coupled to the housing 10 along a first path, and the other shielding member 20 of the pair is slidably coupled to the housing 10 along a second path. The first and second paths may have partially overlapping areas, allowing each shielding member 20 of the pair to switch between overlapping and staggered positions. As an example, the first and second paths are arranged in parallel. In this way, the pair of shielding members 20 can move closer to or further away from each other during sliding.

[0041] like Figures 1 to 4 As shown, the shape of the shield 20 can be generally rectangular or square. Each shield 20 has a through hole 24, and the shape and size of the through hole 24 are adapted to the busbar 411. When each of the pair of shields 20 is in an overlapping position, the through holes 24 of the pair of shields 20 at least partially overlap, and the busbar 411 can be inserted into the two through holes 24 and inserted into the interior of the housing 10 along the second opening 12, thereby connecting with the main circuit plug-in assembly 430 inside the housing 10. When each of the pair of shields 20 is in a staggered position, the through holes 24 of the pair of shields 20 are staggered, which can shield the main circuit plug-in assembly 430 located inside the housing 10, thereby preventing accidental contact by the operator.

[0042] Each of the paired blocking members 20 can move from a staggered position to an overlapping position under the drive of the drawer assembly 410. During the process of the drawer assembly 410 being pushed into the distribution cabinet, the drawer assembly 410 contacts the blocking member 20 and pushes the blocking member 20 to slide through a specific interface or transmission component. As the drawer assembly 410 is gradually pushed into the cabinet, each of the paired blocking members 20 moves to the overlapping position.

[0043] To enable the blocking members 20 to automatically return to the offset position, each blocking member 20 is equipped with at least one elastic element 30. The elastic element 30 may be a spring or other form of elastic element, such as rubber or polyurethane, and has good elasticity and durability. Pairs of elastic elements 30 are each coupled to the corresponding blocking member 20 and are adapted to apply a continuous force to the corresponding blocking member 20. In the absence of external force (i.e., when the drawer assembly 410 is not inserted), the blocking member 20 always tends to return to the offset position.

[0044] With this arrangement, as the drawer assembly 410 is pushed into the cabinet of the distribution cabinet, it drives each of the paired blocking members 20 to move from a staggered position to an overlapping position. The through holes 24 of the paired blocking members 20 allow the busbar 411 inside the drawer assembly 410 to be inserted, thereby realizing the electrical connection between the busbar 411, the main circuit plug-in assembly 430, and the vertical bar. As the drawer assembly 410 is pulled out of the cabinet, it separates from the blocking members 20 of the protective door 100. Under the action of the paired elastic members 30, the through holes 24 of the paired blocking members 20 are staggered, and the protective door 100 can form an insulating barrier at the main circuit plug-in assembly 430, which can prevent operators from accidentally touching the main circuit plug-in assembly 430 during maintenance, thus improving the safety of the distribution cabinet.

[0045] In some embodiments, such as Figures 1 to 3As shown, each blocking member 20 also includes a drive unit 21. The drive unit 21 is located on the side of the blocking member 20 away from the first opening 11, and the drive unit 21 includes a first guide ramp 211 adapted to cooperate with the drawer assembly 410. During the process of the drawer assembly 410 being pushed into the distribution cabinet, the drawer assembly 410 abuts against the first guide ramp 211 of the drive unit 21. As the drawer assembly 410 is gradually pushed into the cabinet, the first guide ramp 211 slides relative to the drawer assembly 410, thereby causing the blocking member 20 to move from a staggered position to an overlapping position.

[0046] As an example, drawer assembly 410 may include multiple insulating supports. These insulating supports are disposed on the side of drawer assembly 410 facing the vertical row and are used to secure multiple busbars 411 of drawer assembly 410. Each insulating support may include annular ribs surrounding a corresponding busbar 411. When drawer assembly 410 approaches the protective door 100, the annular ribs may abut against the first guide ramp 211 of the drive unit 21, thereby driving the blocking member 20 to move from a staggered position to an overlapping position.

[0047] In some embodiments, such as Figure 3 As shown, the housing 10 also includes a groove 13 disposed at the second opening 12, to which the pair of blocking members 20 are slidably coupled. In this way, each blocking member 20 can slide along the groove 13, thereby switching between staggered and overlapping positions, and the groove 13 helps to increase the stability of the blocking member 20 during movement.

[0048] In some embodiments, such as Figure 3 As shown, each shield 20 also includes a stop 22. The stop 22 is provided on the side of the shield 20 facing the second opening 12, and can restrict the separation of the corresponding shield 20 from the housing 10.

[0049] like Figure 3 As shown, an elastic element 30 is provided between each blocking member 20 and the housing 10. The elastic element 30 is adapted to apply a continuous force to the corresponding blocking member 20. Without external force, the blocking member 20 always tends to return to the offset position. When the blocking member 20 moves to the offset position, the stop portion 22 abuts against the inner wall of the housing 10, which can limit further movement of the blocking member 20, thereby preventing the blocking member 20 from falling off the housing 10. Furthermore, the stop portion 22 can stabilize the blocking member 20 in the offset position, and the first guide slope 211 of the drive portion 21 can cooperate with the drawer assembly 410 during the process of the drawer assembly 410 being pushed back into the cabinet.

[0050] In some embodiments, such as Figure 3As shown, the stop portion 22 includes a second guide ramp 221. The second guide ramp 221 includes a first end 2211 away from the other blocking member 20 and a second end 2212 near the other blocking member 20, with the first end 2211 being closer to the first opening 11 than the second end 2212. With this arrangement, the second guide ramp 221 facilitates the installation of the blocking member 20 to the second opening 12 of the housing 10.

[0051] like Figure 3 As shown, the stop 22 can be a wedge-shaped block. During the assembly of the protective door 100, the blocking member 20 can be placed on one side of the housing 10, and then pushed into the groove 13 at the second opening 12. When the second end 2212 of the second guide slope 221 abuts against the housing 10, the second guide slope 221 will drive the blocking member 20 to undergo slight deformation, thereby causing the first end 2211 of the second guide slope 221 to pass over the edge of the housing 10 corresponding to the second opening 12. After the first end 2211 of the second guide slope 221 is located in the second opening 12, the blocking member 20 returns to its original shape under elastic action. Furthermore, since the first end 2211 is closer to the first opening 11 than the second end 2212, after the blocking member 20 returns to its original shape, the first end 2211 will prevent the blocking member 20 from separating from the housing 10.

[0052] In some embodiments, such as Figure 3 as well as Figure 4 As shown, the adjacent ends of the paired blocking members 20 are provided with a third guide slope 23, which can guide the adjacent ends of the paired blocking members 20 to be staggered from each other.

[0053] like Figure 3 as well as Figure 4 As shown, during the assembly of the protective door 100, a pair of blocking members 20 can be pushed into the slide groove 13, with the adjacent ends of the pair of blocking members 20 approaching each other. When the adjacent ends of the pair of blocking members 20 abut together, two third guide ramps 23 can guide the adjacent ends of the pair of blocking members 20 to be staggered from each other, thereby installing the pair of blocking members 20 in the slide groove 13.

[0054] In some embodiments, such as Figures 1 to 3 As shown, the housing 10 also includes a pair of support portions 14. The pair of support portions 14 are disposed at the second opening 12 and are respectively coupled to a pair of elastic members 30. With this arrangement, one end of each elastic member 30 can be fixed to the support portion 14, and the other end of each elastic member 30 can be fixed to a corresponding blocking member 20. The elastic member 30 can push the blocking member 20 to a staggered position. As an example, such as... Figure 3 As shown, one end of the elastic member 30 can be fixed to the support part 14, and the other end of the elastic member 30 can be fixed to the drive part 21.

[0055] In some embodiments, such as Figure 3 As shown, the housing 10 also includes a pair of protruding ribs 15. The pair of protruding ribs 15 are disposed inside the housing 10 and can be located on opposite sides inside the housing 10. Each protruding rib 15 has a support surface 151 at one end near the second opening 12. The support surfaces 151 of the pair of protruding ribs 15 respectively abut against the pair of blocking members 20. With this arrangement, when the pair of blocking members 20 are inserted into the groove 13 at the second opening 12, the support surfaces 151 of the pair of protruding ribs 15 can provide support for the pair of blocking members 20 respectively, preventing the blocking members 20 from deforming under external force, thereby preventing the blocking members 20 from falling out of the groove 13, and helping to improve the assembly stability of the blocking members 20.

[0056] In some embodiments, such as Figures 1 to 4 As shown, the housing 10 also includes a pair of connecting portions 16 disposed at the first opening 11. With this arrangement, the pair of connecting portions 16 are detachably coupled to the vertical bar guard 420 inside the distribution cabinet, which facilitates the installation and removal of the guard door 100.

[0057] In a second aspect of this disclosure, a power distribution cabinet is provided. For example... Figures 5 to 7 As shown, the distribution cabinet includes a cabinet body, a drawer assembly 410, multiple vertical rows, vertical row protective components 420, multiple main circuit plug-in assemblies 430, and multiple protective doors 100 of any of the above.

[0058] Drawer assembly 410 can be made of a rigid metal material, such as cold-rolled steel sheet, to ensure its long-term reliability. Drawer assembly 410 is detachably coupled to the cabinet. During use, users can flexibly configure or replace different electrical modules according to actual needs, thereby improving the adaptability and maintenance convenience of the distribution cabinet.

[0059] Multiple vertical bars are arranged inside the cabinet, and these vertical bars can transmit current to various branch circuits. A vertical bar guard 420 is provided on the side of the vertical bars facing the drawer assembly 410. The vertical bar guard 420 is coupled to the cabinet and also includes multiple plug-in component channels 421.

[0060] Each connector channel 421 is provided with a main circuit connector 430, which can be connected to the corresponding vertical bus. As an example, the main circuit connector 430 can be made of high-quality conductive material, such as copper alloy, to ensure low resistance and high conductivity, while the surface can be silver-plated or tin-plated to enhance oxidation resistance and extend service life.

[0061] Multiple protective doors 100 are coupled to the side of the vertical row protective member 420 facing the drawer assembly 410, with each protective door 100 corresponding to a plug-in assembly channel 421. During the process of pushing the drawer assembly 410 into the cabinet, the paired blocking members 20 of the protective doors 100 open, allowing the busbar 411 inside the drawer assembly 410 to be inserted into the housing 10 for electrical connection with the main circuit plug-in assembly 430. After the drawer assembly 410 is pulled out, the protective doors 100 automatically close, forming a closed barrier that effectively isolates live parts and prevents operators from accidentally touching the main circuit plug-in assembly 430 during maintenance.

[0062] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A protective door (100) for a connector channel, characterized in that, include: The housing (10) includes a first opening (11) and a second opening (12) disposed on opposite sides, wherein the first opening (11) is adapted to allow the main circuit plug-in assembly (430) to be inserted into the interior of the housing (10); A pair of shielding members (20) are disposed at the second opening (12) and slidably coupled to the housing (10), each shielding member (20) being adapted to switch between an overlapping position and a staggered position, and each shielding member (20) including a through hole (24), wherein when each of the pair of shielding members (20) is in the overlapping position, the through holes (24) of the pair of shielding members (20) are at least partially overlapping and adapted for insertion of a busbar (411), and when each of the pair of shielding members (20) is in the staggered position, the through holes (24) of the pair of shielding members (20) are staggered from each other, and each of the pair of shielding members (20) is adapted to move from the staggered position to the overlapping position under the drive of the drawer assembly (410); as well as A pair of elastic elements (30) are each coupled to a corresponding shield (20) in the pair of shields (20), and each elastic element (30) is adapted to apply a force to the corresponding shield (20) to move the shield (20) toward the offset position.

2. The protective door (100) according to claim 1, characterized in that, Each shield (20) also includes: A drive unit (21) is disposed on the side of the cover (20) away from the first opening (11), and the drive unit (21) includes a first guide ramp (211) adapted to cooperate with the drawer assembly (410).

3. The protective door (100) according to claim 1, characterized in that, Each shield (20) also includes: A stop (22) is provided on the side of the shield (20) facing the second opening (12) to restrict the separation of the corresponding shield (20) from the housing (10).

4. The protective door (100) according to claim 3, characterized in that, The stop portion (22) includes a second guide slope (221), which includes a first end (2211) away from the other blocking member (20) and a second end (2212) close to the other blocking member (20), wherein the first end (2211) is closer to the first opening (11) than the second end (2212).

5. The protective door (100) according to claim 1, characterized in that, The housing (10) further includes a groove (13) disposed at the second opening (12), and the paired shielding members (20) are slidably coupled to the groove (13).

6. The protective door (100) according to claim 5, characterized in that, The adjacent ends of the paired blocking members (20) are provided with a third guide slope (23) to guide the adjacent ends of the paired blocking members (20) to be staggered from each other.

7. The protective door (100) according to any one of claims 1 to 6, characterized in that, The housing (10) further includes: A pair of support portions (14) are provided at the second opening (12) and are respectively coupled to the pair of elastic members (30).

8. The protective door (100) according to any one of claims 1 to 6, characterized in that, The housing (10) further includes: A pair of convex ribs (15) are provided inside the housing (10), and each convex rib (15) has a support surface (151) at one end near the second opening (12), and the support surface (151) of the pair of convex ribs (15) abuts against the pair of shielding members (20).

9. The protective door (100) according to any one of claims 1 to 6, characterized in that, The housing (10) also includes a pair of connecting portions (16) disposed at the first opening (11).

10. A power distribution cabinet, characterized in that, include: Cabinet; Drawer assembly (410) is detachably coupled to the cabinet body; Multiple vertical rows are arranged inside the cabinet; A vertical row guard (420) is disposed on the side of the plurality of vertical rows facing the drawer assembly (410) and coupled to the cabinet body, the vertical row guard (420) including a plurality of plug-in component channels (421); Multiple main circuit plug-in assemblies (430) are respectively disposed in the multiple plug-in assembly channels (421) and coupled to the vertical bus guard (420), and are respectively electrically connected to the multiple vertical buses; as well as Multiple protective doors (100) according to any one of claims 1 to 9 are coupled to the side of the vertical row protective member (420) facing the drawer assembly (410) and respectively correspond to the multiple plug-in assembly channels (421).

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