An electrical box protection device and an electrical box

Abstract

This invention discloses an electrical box protection device and an electrical box. The electrical box protection device includes a housing, a first positioning rod, a top block, a lock cylinder, and a key. The key can pass through the lock cylinder and push the top block to move. When the electrical box door is closed and the electrical box protection device is installed, the circuit of the power supply system inside the electrical box is in a normal closed power supply state. When it is necessary to open the box door normally for operation, the key passes through the lock cylinder and abuts against the top block. The top block is subjected to the pushing force of the spring and the pressure of the key and is held between the first switch and the second switch. At this time, the box door can be opened for operation while keeping the power supply system closed. If the box door is opened abnormally, the bolt on the box door moves with the box door and moves out of the first through hole on the top block. The top block moves under the action of the spring to trigger the first switch and disconnect the power supply system circuit, thereby reducing the phenomenon of abnormal box door opening, avoiding illegal use of electricity and other operations, and improving safety.

Description

Technical Field

[0001] This application relates to the field of electrical box equipment technology, and in particular to an electrical box protection device and an electrical box. Background Technology

[0002] The information provided in this section is for the purpose of generally presenting the background of this disclosure. To the extent described in this section, the work of the currently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly considered to be prior art of this disclosure.

[0003] In modern factories, distribution cabinets or boxes are indispensable electrical equipment. These cabinets and boxes are generally managed and used by qualified personnel; unauthorized access is prohibited. Maintenance of these power distribution boxes also requires professional management. To ensure electrical safety and equipment integrity, regulations prohibit unauthorized access to maintenance power distribution boxes, but this practice persists because distribution cabinets and boxes are sometimes opened improperly, leading to a diverse user base. This not only damages the doors of some maintenance power distribution boxes and causes internal wiring chaos, but also significantly hinders safe electrical management. Summary of the Invention

[0004] In view of the deficiencies in the prior art, this application provides an electrical box protection device and an electrical box to solve the problem of electrical boxes being illegally opened and used for electricity in the prior art.

[0005] The above-mentioned objectives of the present invention are mainly achieved through the following technical solutions:

[0006] An electrical box protection device, comprising:

[0007] The housing contains a first switch and a second switch. The first switch is used to disconnect the circuit of the power supply system, and the second switch is used to close the circuit of the power supply system. The housing has a first operating hole for the bolts on the door to pass through.

[0008] The first positioning rod is fixedly installed inside the housing.

[0009] A top block is sleeved on the first positioning rod and is movable along the axial direction of the first positioning rod. The top block has a first position on the first positioning rod that can trigger the first switch and a second position that can trigger the second switch. A first spring for pushing the top block toward the first position is sleeved on the first positioning rod. The top block is provided with a first through hole, and when the top block is located between the first position and the second position, the center line of the first through hole can coincide with the center line of the first operating hole.

[0010] A lock cylinder and a key adapted to the lock cylinder, the lock cylinder being disposed on the housing, the key being able to pass through the lock cylinder along the length direction of the first positioning rod and being used to push the top block toward the second position.

[0011] Furthermore, the protective device also includes a first locking pin, which is disposed within the housing and can move into the first through hole when the top block is located between the first position and the second position, so as to restrict the top block from continuing to move on the first positioning rod.

[0012] Furthermore, the housing has a second operating hole that is opposite to the first operating hole, and the center line of the second operating hole is collinear with the center line of the first operating hole and the center line of the first locking pin. The key has a rod that can pass through the second operating hole, and the rod can pass through the second operating hole and push the first locking pin into the first through hole.

[0013] Furthermore, the housing is provided with multiple support plates, and the support plates are provided with support holes, and the first locking pin is provided to move within the multiple support holes.

[0014] Furthermore, there are two of the first positioning rods.

[0015] Furthermore, the lock cylinder has a first insertion hole and a second through hole of the same shape, and the projections of the first insertion hole and the second through hole in the length direction of the first positioning rod are staggered. The key includes a connecting rod and an end block, and the end block is disposed at one end of the connecting rod and its shape is adapted to the first insertion hole or the second through hole.

[0016] Furthermore, the top block is provided with a second through hole, the center line of the second through hole is parallel to the center line of the first positioning rod, the inner diameter of the second through hole is larger than the outer diameter of the connecting rod and smaller than the width of the end block.

[0017] Furthermore, when the center line of the first through hole coincides with the center line of the first operating hole, the distance between the top block and the lock cylinder is equal to the thickness of the end block.

[0018] Based on the same inventive concept, this application also proposes an electrical box, which includes: a box body, a box door, and the aforementioned electrical box protective device. The box body is disposed within the box body, and the box door is closable and connected to the box body. The box door is provided with a bolt that can extend into the first operating hole, and the bolt connects and fixes the box door to the box body. When the bolt moves out of the first operating hole, the top block moves toward the first switch on the first positioning rod and triggers the first switch to disconnect the circuit of the power supply system.

[0019] Furthermore, the length of the bolt is not less than the distance from the first operating hole to the side of the top block away from the first operating hole.

[0020] Compared with the prior art, the advantages of the present invention are as follows:

[0021] The electrical box protection device of this invention is installed inside the electrical box. Its housing contains a first switch and a second switch that can disconnect and close the power supply system circuit. A first positioning rod inside the housing has a top block and a first spring that can push the top block towards the first switch. The housing also contains a lock cylinder and a key compatible with the lock cylinder. The key passes through the lock cylinder and pushes the top block. When the electrical box door is closed and the electrical box protection device is installed, the power supply system circuit inside the electrical box is in a normally closed power supply state. When it is necessary to open the box door for work, the key passes through the lock cylinder and presses against the top block. The top block is subjected to the pushing force of the spring and the pressure of the key, and is held between the first and second switches. At this time, the box door can be opened for work while maintaining the closed power supply system. If the box door is opened abnormally, the bolt on the box door moves with the box door and moves out of the first through hole on the top block. The top block moves under the action of the spring, triggering the first switch and disconnecting the power supply system circuit. This reduces abnormal box door opening operations, avoids illegal electricity use, and improves safety. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a side view of the electrical box protection device provided in an embodiment of this application;

[0024] Figure 2 This is a top view of the electrical box protection device provided in an embodiment of this application;

[0025] Figure 3 A front view of a key provided in an embodiment of this application;

[0026] Figure 4 A side view of a key provided in an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the lock cylinder in a first direction provided in an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the second direction of the lock cylinder provided in an embodiment of this application;

[0029] Figure 7 A top view of the housing provided in an embodiment of this application;

[0030] Figure 8 This is a schematic diagram of the structure of the top block triggering the first switch provided in an embodiment of this application;

[0031] Figure 9 Appendix provided for the embodiments of this application Figure 8 Top view of the current state;

[0032] Figure 10 This is a schematic diagram of the structure of the top block triggering the second switch provided in an embodiment of this application;

[0033] Figure 11 A schematic diagram of the structure when the top block is located between the first position and the second position, as provided in an embodiment of this application;

[0034] Figure 12 This is a schematic diagram of the structure when the insertion rod pushes the first locking pin according to an embodiment of this application;

[0035] In the diagram: 1. Housing; 11. First switch; 12. Second switch; 14. Second operating hole; 15. Support plate; 21. First positioning rod; 22. First spring; 3. Top block; 31. First through hole; 32. Second through hole; 4. Lock cylinder; 41. First insertion hole; 42. Second through hole; 5. Key; 51. Insert rod; 52. Connecting rod; 53. End block; 6. First locking pin; 7. Box body; 71. Box door; 72. Bolt. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to aid in understanding the invention, but does not constitute a limitation thereof. The specific structural and functional details disclosed herein are merely for describing exemplary embodiments of the invention. However, the invention can be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0037] like Figure 1-12 As shown, an electrical box protection device includes a housing 1, a first positioning rod 21, a top block 3, a lock cylinder 4, and a key 5, wherein:

[0038] The housing 1 is provided with a first switch 11 and a second switch 12. The first switch 11 is used to disconnect the circuit of the power supply system, and the second switch 12 is used to close the circuit of the power supply system. The housing 1 is provided with a first operating hole for the bolt 72 on the door 71 to pass through (not shown separately in the figure).

[0039] The first switch 11 and the second switch 12 can be configured as tactile switches, and the first switch 11 and the second switch 12 are electrically connected in the circuit of the power supply system. When the first switch 11 is triggered, the circuit of the power supply system is disconnected, and the circuit of the power supply system switches from the conducting power supply state to the disconnected and stopped power supply state. It should be noted that even if the first switch 11 is triggered repeatedly, the circuit of the power supply system always remains in the disconnected state, that is, the first switch 11 only has the function of controlling the circuit of the power supply system to switch from the closed state to the open state.

[0040] After the power supply system circuit is disconnected, the power supply system stops supplying power. At this time, the second switch 12 is operated. Under the action of the second switch 12, the disconnected circuit of the power supply system switches to the closed state. At this time, the power supply system resumes normal power supply. Similarly, the second switch 12 only has the function of controlling the circuit of the power supply system to switch from the open state to the closed state. Even if the second switch 12 is repeatedly triggered, the power supply system always remains in the closed state.

[0041] The first positioning rod 21 is fixedly installed inside the housing 1.

[0042] The top block 3 is sleeved on the first positioning rod 21 and can move axially along the first positioning rod 21. The top block 3 has a first position on the first positioning rod 21 that can trigger the first switch 11 and a second position that can trigger the second switch 12. Specifically, the first positioning rod 21 provides a constraint on the movement direction of the top block 3, that is, it constrains the top block 3 to move back and forth between the first position and the second position. When the top block 3 moves to the first position, the top block 3 triggers the first switch 11. When the top block 3 moves to the second position, the top block 3 triggers the second switch 12.

[0043] The first positioning rod 21 is fitted with a first spring 22 for pushing the top block 3 toward the first position. When the top block 3 loses the additional external force, the top block 3 will move toward the first position under the pushing action of the first spring 22, and the top block 3 will trigger the first switch 11.

[0044] The top block 3 is provided with a first through hole 31. When the top block 3 is located between the first position and the second position, the center line of the first through hole 31 can coincide with the center line of the first operating hole. When the top block 3 is located between the first position and the second position, it maintains a state of being separated from both the first switch 11 and the second switch 12. At this time, the first through hole 31 corresponds to the first operating hole.

[0045] The lock cylinder 4 and the key 5 adapted to the lock cylinder 4 are provided on the housing 1. The key 5 can pass through the lock cylinder 4 along the length direction of the first positioning rod 21 and is used to push the top block 3 toward the second position.

[0046] It should be noted that the lock cylinder 4 and the key 5 can have different locking and unlocking structures. The lock cylinder 4 and the key 5 can be set as a mechanical lock and a mechanical key 5, or they can be set as an electronic lock and a mechanical key 5. In other words, the lock cylinder 4 and the key 5 are not specifically limited. The lock cylinder 4 prevents non-key 5 structures from being inserted into and extending into the housing 1, so as to prevent non-operating personnel from using ordinary rod-shaped structures to replace the key 5 to reach into the housing 1, thereby increasing the operating threshold and preventing the top block 3 inside the housing 1 from being pressed and moved at will, thus raising the threshold for standardized operation.

[0047] After the key 5 passes through the lock cylinder 4, one end of the key 5 extends into the housing 1. With the continuous insertion of the key 5, one end of the key 5 can push the top block 3 along the length direction of the first positioning rod 21 toward the second switch 12. That is, after the top block 3 triggers the first switch 11, the top block 3 can be pushed to the second position to trigger the second switch 12, or before opening the box door 71, the top block 3 can be pushed between the first position and the second position by the key 5, so as to prevent the top block 3 from moving to the first position under the action of the first spring 22 and thus triggering the first switch 11.

[0048] The working principle of this embodiment is as follows: The electrical box protective device is installed inside the electrical box. Its housing 1 contains a first switch 11 and a second switch 12 that can disconnect and close the power supply system circuit. A top block 3 and a first spring 22 that can push the top block 3 towards the first switch 11 are provided on the first positioning rod 21 inside the housing 1. A lock cylinder 4 and a key 5 compatible with the lock cylinder 4 are also provided inside the housing 1. The key 5 can pass through the lock cylinder 4 and push the top block 3 to move. After the electrical box door 71 is closed and the electrical box protective device is installed, the power supply system circuit inside the electrical box is in a normally closed power supply state. When it is necessary to open the box door 71 for normal operation... The key 5 passes through the lock cylinder 4 and rests against the top block 3. The top block 3 is pushed by the spring and pressed by the key 5 and is held between the first switch 11 and the second switch 12. At this time, the box door 71 can be opened for operation while keeping the power supply system closed. If the box door 71 is opened abnormally, the bolt 72 on the box door 71 moves with the box door 71 and moves out from the first through hole 31 on the top block 3. The top block 3 moves under the action of the spring to trigger the first switch 11 and disconnect the power supply system circuit, thereby reducing the phenomenon of abnormal opening of the box door 71, avoiding illegal use of electricity and other operations, and improving safety.

[0049] Furthermore, based on the above embodiments, the protective device further includes a first locking pin 6. The first locking pin 6 is disposed inside the housing 1 and can move into the first through hole 31 when the top block 3 is located between the first position and the second position, so as to restrict the top block 3 from continuing to move on the first positioning rod 21. The first locking pin 6 is movably disposed inside the housing 1. When the top block 3 is located between the first position and the second position, the first locking pin 6 can be moved into the first through hole 31 of the top block 3. Under the restriction of the first locking pin 6, the top block 3 cannot move and remains separated from the first switch 11 and the second switch 12. That is, after the key 5 is removed, the top block 3 can still remain between the first position and the second position.

[0050] Furthermore, based on the above embodiment, the housing 1 is provided with a second operating hole 14 opposite to the first operating hole, and the center line of the second operating hole 14 is collinear with the center line of the first operating hole and the center line of the first locking pin 6. The key 5 is provided with a rod 51 that can pass through the second operating hole 14. The rod 51 can pass through the second operating hole 14 and push the first locking pin 6 into the first through hole 31. When the top block 3 is between the first position and the second position, the rod 51 can be inserted into the second operating hole 14, and the first locking pin 6 can be pushed by the rod 51 to move into the first through hole 31 of the top block 3. The top block 3 cannot move under the restriction of the first locking pin 6 and remains separated from the first switch 11 and the second switch 12. Even after the key 5 is removed, the top block 3 still remains between the first position and the second position.

[0051] After the insertion rod 51 restricts the relative position, and because the center line of the second operating hole 14 is collinear with the center line of the first operating hole and the center line of the first locking pin 6, after the door 71 is closed, the bolt 72 on the door 71 can pass through the first operating hole and extend into the first through hole 31. Since the first locking pin 6 is already located in the first through hole 31, the bolt 72 can push out the first locking pin 6. At this time, the top block 3 achieves relative position constraint through the bolt 72. When the bolt 72 on the door 71 is removed, the top block 3 can move again to the first position to trigger the first switch 11 under the action of the first spring 22 after losing constraint.

[0052] It should be noted that, since the plug rod 51 needs to be inserted into the second operating hole 14 and push the first locking pin 6 inside the housing 1, a through hole corresponding to the second operating hole 14 can be opened on the corresponding electrical box so that the plug rod 51 can pass through smoothly.

[0053] Furthermore, based on the above embodiments, the housing 1 is provided with multiple support plates 15, and the support plates 15 are provided with support holes. The first locking pin 6 moves within the multiple support holes. The setting of the support plates 15 keeps the movement trajectory of the first locking pin 6 consistent. During the process of the first locking pin 6 entering or leaving the first through hole 31 on the top block 3, the center line of the first locking pin 6 is always kept on the same straight line, maintaining the stable constraint operation of the first locking pin 6. The support plate 15 can also be set on the bolt 72 passing through the first operating hole, thereby constraining the movement path of the bolt 72 after passing through the first operating hole and improving the displacement accuracy.

[0054] Furthermore, based on the above embodiments, two first positioning rods 21 are provided to improve the stability of the top block 3 during movement and prevent the top block 3 from shifting.

[0055] Furthermore, based on the above embodiments, the lock cylinder 4 has a first insertion hole 41 and a second through hole 42 with the same shape. The projections of the first insertion hole 41 and the second through hole 42 on the length direction of the first positioning rod 21 are staggered. The key 5 includes a connecting rod 52 and an end block 53. The end block 53 is disposed at one end of the connecting rod 52 and its shape is adapted to the first insertion hole 41 or the second through hole 42.

[0056] When the key 5 passes through the lock cylinder 4, the shape of the end block 53 is adapted to the first insertion hole 41 and the second through hole 42 respectively. After the end block 53 is inserted into the first insertion hole 41 at the first angle, the connecting rod 52 needs to be rotated to drive the end block 53 to rotate at a certain angle. At this time, the end block 53 can be inserted into the second through hole 42 at the second angle until the end block 53 passes through the lock cylinder 4 and enters the housing 1.

[0057] The shapes of the first insertion hole 41 and the second through hole 42 can be set to unconventional shapes to increase the difficulty of imitation.

[0058] It should be noted that since the end block 53 needs to pass through the first insertion hole 41 or the second through hole 42 at a specific angle, when the end block 53 is not at the angle corresponding to passing through the second through hole 42, the end block 53 can be located on the side of the lock cylinder 4 close to the top block 3 and is restricted by the lock cylinder 4 to move away from the top block 3.

[0059] Furthermore, based on the above embodiment, the top block 3 is provided with a second through hole 32, the center line of the second through hole 32 is parallel to the center line of the first positioning rod 21, the inner diameter of the second through hole 32 is larger than the outer diameter of the connecting rod 52 and smaller than the width of the end block 53.

[0060] Since key 5 needs to pass through lock cylinder 4 to push top block 3, inevitably, there will be a slender rod that is not part of key 5 structure. It can directly pass through the overlapping area of ​​the first insertion hole 41 and the second through hole 42 and enter the interior. In order to prevent the slender rod of non-key 5 from passing through lock cylinder 4 and pressing top block 3, so that lock cylinder 4 will not move to the first position to trigger the first switch 11, the second through hole 32 is designed so that the slender rod can pass through the first insertion hole 41 and the second through hole 42 and directly insert into the second through hole 32. The inner diameter of the second through hole 32 is larger than the outer diameter of the connecting rod 52, which effectively avoids the slender rod from contacting top block 3, and thus avoids the non-key 5 structure from passing through lock cylinder 4 and pushing top block 3.

[0061] The inner diameter of the second through hole 32 is smaller than the width of the end block 53. That is, after the end block 53 passes through the lock cylinder 4, the width of the end block 53 is larger. The width direction of the end block 53 has an area that presses against the top block 3, so that the end block 53 can push the top block 3 to move, thus preventing the end block 53 from falling into the second through hole 32.

[0062] Furthermore, based on the above embodiments, when the center line of the first through hole 31 coincides with the center line of the first operating hole, the distance between the top block 3 and the lock cylinder 4 is equal to the thickness of the end block 53.

[0063] Since the end block 53 needs to pass through the first insertion hole 41 or the second through hole 42 at a specific angle, when the end block 53 is not at the angle corresponding to passing through the second through hole 42, the end block 53 can be located on the side of the lock cylinder 4 closer to the top block 3 and is restricted by the lock cylinder 4 to move away from the top block 3.

[0064] When the center line of the first through hole 31 coincides with the center line of the first operating hole, the distance between the top block 3 and the lock cylinder 4 is equal to the thickness of the end block 53. That is, when the end block 53 is held at an angle that prevents it from passing through the second through hole 42, the first spring 22 pushes the top block 3 to move, and the top block 3 holds the end block 53 against the lock cylinder 4. At this time, one side of the top block 3 is pushed by the first spring 22, and the other side is held against the end block 53. The top block 3 remains in a relatively stable position, and the center line of the first through hole 31 coincides with the center line of the first operating hole. Therefore, no further... By precisely operating the key 5 and controlling the precise position of the top block 3, the first through hole 31 can be aligned with the first operating hole, reducing the difficulty of operation and increasing the operation progress. At this time, the bolt 72 on the door 71 can be inserted into the first through hole 31 to restrict the top block 3 from moving again, or the first locking pin 6 can be driven to be inserted into the first through hole 31 to restrict the top block 3 from moving again, greatly improving the operation efficiency. At the same time, under the premise that the bolt 72 or the first locking pin 6 does not form a constraint relationship with the top block 3, the situation of the top block 3 accidentally triggering the first switch 11 is prevented.

[0065] Based on the same inventive concept, this application also proposes an electrical box, which includes: a box body 7, a box door 71, and the aforementioned electrical box protective device. The housing 1 is disposed inside the box body 7. The box door 71 is openable and closable and connected to the box body 7. The box door 71 is provided with a bolt 72 that can extend into the first operating hole. The bolt 72 connects and fixes the box door 71 to the housing 1. When the bolt 72 moves out of the first operating hole, the top block 3 moves toward the first switch 11 on the first positioning rod 21 and triggers the first switch 11 to disconnect the circuit of the power supply system.

[0066] When the door 71 is opened, bolt 72 needs to be removed. As bolt 72 is removed, it is moved out of the first operating hole.

[0067] During the process of opening the box door 71 using key 5, first pass key 5 through lock cylinder 4 and continue to insert key 5 until one end of key 5 abuts against top block 3. At this time, remove bolt 72 on box door 71, open box door 71, and work inside the electrical box while the power supply system circuit is not disconnected. After the operation is completed, box door 71 can be closed directly, bolt 72 can be installed and inserted into first through hole 31, and then key 5 can be removed to complete the closing of box door 71.

[0068] Alternatively, the first locking pin 6 can be pushed into the first through hole 31 by the insertion rod 51 on the key 5. At this time, the key 5 can be removed from the lock cylinder 4. Then, the box door 71 is closed and the bolt 72 is installed. The bolt 72 pushes out the first locking pin 6 while being inserted into the first through hole 31, thus completing the closing of the box door 71.

[0069] Furthermore, based on the above embodiments, the length of the bolt 72 is not less than the distance from the first operating hole to the side of the top block 3 away from the first operating hole, so that the bolt 72 can push out the first insert 51 located in the first through hole 31.

[0070] It should be understood that the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Although the terms "first," "second," etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of the invention.

[0071] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0072] It should be understood that in the description of this invention, the terms "upper," "vertical," "inner," "outer," etc., indicate the orientation or positional relationship as commonly placed when the disclosed product is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0073] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0074] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” “containing,” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0075] Specific details are provided in the following description to provide a complete understanding of the exemplary embodiments. However, those skilled in the art will understand that the exemplary embodiments can be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may be omitted in the depiction of non-essential details to avoid obscuring the exemplary embodiments.

[0076] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An electrical box protector, comprising: It includes: The housing contains a first switch and a second switch. The first switch is used to disconnect the circuit of the power supply system, and the second switch is used to close the circuit of the power supply system. The housing has a first operating hole for the bolts on the door to pass through. The first positioning rod is fixedly installed inside the housing. A top block is sleeved on the first positioning rod and is movable along the axial direction of the first positioning rod. The top block has a first position on the first positioning rod that can trigger the first switch and a second position that can trigger the second switch. A first spring for pushing the top block toward the first position is sleeved on the first positioning rod. The top block is provided with a first through hole, and when the top block is located between the first position and the second position, the center line of the first through hole can coincide with the center line of the first operating hole. A lock cylinder and a key adapted to the lock cylinder, the lock cylinder being disposed on the housing, the key being able to pass through the lock cylinder along the length direction of the first positioning rod and being used to push the top block toward the second position.

2. The electrical box protector of claim 1, wherein: The protective device further includes a first locking pin, which is disposed inside the housing and can move into the first through hole when the top block is located between the first position and the second position, so as to restrict the top block from continuing to move on the first positioning rod.

3. The electrical box protector of claim 2, wherein: The housing has a second operating hole that is opposite to the first operating hole, and the center line of the second operating hole is collinear with the center line of the first operating hole and the center line of the first locking pin. The key has a rod that can pass through the second operating hole, and the rod can pass through the second operating hole and push the first locking pin into the first through hole.

4. The electrical box protector of claim 2, wherein: The housing is provided with multiple support plates, and the support plates are provided with support holes. The first locking pin is located in the multiple support holes and moves within them.

5. The electrical box protection device as described in claim 1, characterized in that: There are two first positioning rods.

6. The electrical box protection device as described in claim 1, characterized in that: The lock cylinder has a first insertion hole and a second through hole of the same shape. The projections of the first insertion hole and the second through hole on the length direction of the first positioning rod are staggered. The key includes a connecting rod and an end block. The end block is located at one end of the connecting rod and its shape is adapted to the first insertion hole or the second through hole.

7. The electrical box protection device as described in claim 6, characterized in that: The top block is provided with a second through hole, the center line of the second through hole is parallel to the center line of the first positioning rod, the inner diameter of the second through hole is larger than the outer diameter of the connecting rod and smaller than the width of the end block.

8. The electrical box protection device as described in claim 6, characterized in that: When the center line of the first through hole coincides with the center line of the first operating hole, the distance between the top block and the lock cylinder is equal to the thickness of the end block.

9. An electrical box, characterized in that, It includes: The enclosure, the door, and the electrical box protection device as described in any one of claims 1-8, wherein the housing is disposed within the enclosure, the door is openable and closable and connected to the enclosure, the door is provided with a bolt that extends into the first operating hole, and the bolt connects and fixes the door to the housing, and when the bolt moves out of the first operating hole, the top block moves toward the first switch on the first positioning rod and triggers the first switch to disconnect the circuit of the power supply system.

10. The electrical box as described in claim 9, characterized in that: The length of the bolt is not less than the distance from the first operating hole to the side of the top block away from the first operating hole.

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