Power distribution cabinet

Abstract

The utility model discloses a kind of switchgear, including cabinet, switch and protective device. Cabinet includes cabinet body and the cabinet door of movable connection. Switch is located at cabinet door. Protective device includes protection mechanism, locking piece, first driving mechanism and second driving mechanism, all are installed in cabinet door. First driving mechanism is connected with protection mechanism one end, and the other end is movably connected with locking piece, second driving mechanism drives locking piece to move between locking and release position. When locking piece is in locking position, locking with protection mechanism, first driving mechanism makes protection mechanism cover switch;When locking piece is in release position, separate with protection mechanism, first driving mechanism drives protection mechanism to move to avoid position, remove the cover of switch. The utility model aims at preventing misoperation and guaranteeing power safety.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinets, and in particular to a power distribution cabinet. Background Technology

[0002] In existing power distribution cabinets, automatic transfer switches are key equipment for ensuring reliable power switching. Their operating handles are mostly exposed to the external environment. In current technology, the protective measures for switches are mostly simple plastic shells or no special protective structure. There is no mechanical locking mechanism to prevent accidental contact, which can easily cause accidental contact problems in daily use, leading to safety hazards in power use. Utility Model Content

[0003] The main purpose of this utility model is to propose a power distribution cabinet that aims to prevent misoperation and ensure electrical safety.

[0004] To achieve the above objectives, this utility model proposes a power distribution cabinet, comprising:

[0005] The cabinet includes a cabinet body and a cabinet door, wherein the cabinet door is movably connected to the cabinet body;

[0006] The switch is located at the cabinet door;

[0007] The protective device includes a protective mechanism, a locking element, a first driving mechanism, and a second driving mechanism. One end of the protective mechanism is drivenly connected to the first driving mechanism, and the other end is movably connected to the locking element. Both the first driving mechanism and the second driving mechanism are installed on the cabinet door. The second driving mechanism is provided with the locking element, and the second driving mechanism drives the locking element to move between a locked position and a released position.

[0008] In the locked position, the second drive mechanism drives the locking member to lock with the protective mechanism, and the first drive mechanism drives the protective mechanism to a shielded position to cover the switch; in the released position, the second drive mechanism drives the locking member to separate from the protective mechanism, and the first drive mechanism drives the protective mechanism to move relative to the cabinet door so that the protective mechanism is in a clearance position to release the cover of the switch.

[0009] In one embodiment, the first driving mechanism includes a first driving member, a connecting member, and a first housing. The first housing is disposed on the cabinet door, and a first cavity is formed between the first housing and the cabinet door. The first driving member is disposed in the first cavity. The first housing has a mounting hole. The connecting member is at least partially located in the first cavity. One end of the connecting member is drivenly connected to the first driving member, and the other end of the connecting member passes through the mounting hole and is connected to the protective mechanism.

[0010] In one embodiment, the connector includes a first connecting rod and a second connecting rod, and the mounting hole includes a first mounting hole and a second mounting hole;

[0011] The first driving component includes a motor, a worm gear, a worm wheel, and a rotating rod. The output end of the motor is connected to the worm gear, and the output shaft of the motor is connected to the worm gear. The worm gear meshes with the worm wheel, and the worm wheel is sleeved on the rotating rod. The first connecting rod and the second connecting rod are respectively connected to the rotating rod and are arranged at intervals along the length direction of the rotating rod. The other end of the first connecting rod passes through the first mounting hole and is connected to the protective mechanism, and the other end of the second connecting rod passes through the second mounting hole and is connected to the protective mechanism.

[0012] In one embodiment, the protective mechanism includes a protective cover and a limiting part. The limiting part is provided on a protruding structure on the protective cover. The protective cover is driven to move by the first driving mechanism, so that the locking member is limited to the limiting part. The protective cover has a receiving cavity and an opening communicating with the receiving cavity. In the locked position, the switch is at least partially received in the receiving cavity through the opening.

[0013] In one embodiment, the protective cover includes a base and a cover body. The cover body is disposed on the base, and the cover body and the base enclose a cavity. The base has the opening. One end of the base is connected to the connector, and the limiting part is disposed at the other end of the base. One of the base and the cover body is provided with a positioning post, and the other is provided with a positioning hole. The positioning post engages with the positioning hole so that the base and the cover body engage and cooperate.

[0014] In one embodiment, the base and the cover are made of a transparent material.

[0015] In one embodiment, the cover is arc-shaped, and the base includes a base body, a first bracket, and a second bracket. The first bracket and the second bracket are disposed opposite to each other on the base body, and the other ends of the first bracket and the second bracket are arc-shaped extensions to be adapted to the cover for installation.

[0016] In one embodiment, the locking member is recessed to form a groove, and in the locked position, the protruding structure is confined within the groove.

[0017] In one embodiment, the second driving mechanism includes a second driving member, a connecting rod assembly, a guide assembly, and a second housing. The second housing is disposed on the cabinet door and forms a second cavity with the cabinet door. The second driving member, the connecting rod assembly, and the guide assembly are all disposed within the second cavity. The two ends of the connecting rod assembly are respectively connected to the inner walls of the two opposite sides of the second housing. The guide assembly is sleeved on the connecting rod assembly and can slide along the axial direction of the connecting rod assembly. The guide assembly is pultrusively connected to the locking member. The driving end of the second driving member is connected to the locking member and is used to drive the locking member to move between the locked position and the unlocked position.

[0018] In one embodiment, the linkage assembly includes a first linkage and a second linkage, and the guide assembly includes a first guide and a second guide. The first linkage and the second linkage are respectively connected to the inner walls of the two opposite sides of the second housing. The first guide is sleeved on the first linkage, and the second guide is sleeved on the second linkage. The two ends of the locking member are respectively connected to the first guide and the second guide.

[0019] The power distribution cabinet disclosed in this utility model includes a cabinet body, a switch, and a protective device. The cabinet body consists of a cabinet body and an openable cabinet door, with the switch mounted on the door for easy operation. The protective device is integrated into the cabinet door and mainly includes a protective mechanism, a locking element, a first drive mechanism, and a second drive mechanism. The protective mechanism is used to cover or avoid the switch. One end of the protective mechanism is driven by the first drive mechanism, and the other end cooperates with the locking element to achieve position locking. Both the first and second drive mechanisms are mounted on the cabinet door, resulting in a compact structure. The second drive mechanism controls the locking element to switch between a locked position and a released position. When in the locked position, the locking element locks the protective mechanism, and simultaneously, the first drive mechanism moves the protective mechanism to a shielded position, completely covering the switch to prevent accidental activation. When it is necessary to operate the switch, the second drive mechanism first releases the locking element, removing the restriction on the protective mechanism. Then, the first drive mechanism drives the protective mechanism to a avoidance position, exposing the switch operation area, achieving safe and automated protective control. The entire solution works in concert through dual drive mechanisms to prevent misoperation and ensure electrical safety. It achieves automatic closing and opening of switch areas, improving the safety and intelligence of power distribution operations. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the overall structure of an embodiment of the syringe and power distribution cabinet provided by this utility model;

[0022] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0023] Figure 3 A partial structural schematic diagram of an embodiment of the power distribution cabinet provided by this utility model;

[0024] Figure 4 A partial structural schematic diagram of another embodiment of the power distribution cabinet provided by this utility model;

[0025] Figure 5 This is a partial structural schematic diagram of another embodiment of the power distribution cabinet provided by this utility model.

[0026] Explanation of icon numbers:

[0027] 10. Cabinet; 11. Cabinet body; 12. Cabinet door; 20. Switch; 30. Protective device; 31. Protective mechanism; 311. Protective cover; 312. Limiting part; 313. Base; 3131. Base body; 3132. First bracket; 3133. Second bracket; 314. Cover; 32. Locking element; 33. First drive mechanism; 331. First drive element; 3311. Motor; 3312. Worm gear; 3313 3314. Worm gear; 332. Rotating rod; 333. Connecting member; 3321. First connecting rod; 3322. Second connecting rod; 333. First housing; 334. Mounting hole; 3341. First mounting hole; 3342. Second mounting hole; 34. Second drive mechanism; 341. Second drive member; 342. Linkage assembly; 3421. First link; 3422. Second link; 343. Guide assembly; 344. Second housing.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] This utility model proposes a power distribution cabinet.

[0033] Please refer to Figures 1 to 5 In one embodiment of this utility model, a power distribution cabinet includes:

[0034] The cabinet 10 includes a cabinet body 11 and a cabinet door 12, wherein the cabinet door 12 is movably connected to the cabinet body 11;

[0035] Switch 20 is located at cabinet door 12;

[0036] The protective device 30 includes a protective mechanism 31, a locking element 32, a first driving mechanism 33, and a second driving mechanism 34. One end of the protective mechanism 31 is drivenly connected to the first driving mechanism 33, and the other end is movably connected to the locking element 32. The first driving mechanism 33 and the second driving mechanism 34 are both installed on the cabinet door 12. The second driving mechanism 34 is provided with the locking element 32, and the second driving mechanism 34 drives the locking element 32 to move between a locked position and a released position.

[0037] In the locked position, the second drive mechanism 34 drives the locking member 32 to lock with the protective mechanism 31, and the first drive mechanism 33 drives the protective mechanism 31 to be in a shielded position to cover the switch 20; in the released position, the second drive mechanism 34 drives the locking member 32 to separate from the protective mechanism 31, and the first drive mechanism 33 drives the protective mechanism 31 to move relative to the cabinet door 12 so that the protective mechanism 31 is in a clearance position to release the cover of the switch 20.

[0038] This solution relates to a distribution cabinet with automatic protection functions, aiming to improve the safety and intelligence of electrical operations. The distribution cabinet comprises a cabinet body 10, a switch 20, and a protective device integrated into the cabinet door 12. The cabinet body 10 consists of a cabinet main body 11 and a cabinet door 12, which can be opened and closed relative to the cabinet main body 11, facilitating the inspection and operation of internal electrical components. The switch 20, located at the cabinet door 10, can be a circuit breaker, disconnector, or other control element; its operating state directly affects the circuit's on / off state, therefore, accidental contact or unauthorized operation must be prevented. The protective device 30 is the core innovation of this solution, integrated into the cabinet door 10, and mainly includes a protective mechanism 31, a locking element 32, a first drive mechanism 33, and a second drive mechanism 34. The protective mechanism 31 acts as a physical shield, used to cover the switch 20 under specific conditions, preventing personnel from directly contacting live components. One end of the protective mechanism 31 is driven by the first drive mechanism 33, while the other end is movably connected to the locking element 32, thus restricting the movement of the protective mechanism 31 by the locking element 32. Both the first drive mechanism 33 and the second drive mechanism 34 are mounted on the cabinet door 12 for easy assembly and maintenance. The first drive mechanism 33 drives the protective mechanism 31 to reciprocate between a shielded position and a clearance position, while the second drive mechanism 34 controls the movement of the locking element 32, switching it between a locked position and a released position, thereby achieving mechanical locking and releasing of the protective mechanism 31. During normal operation or when protection is required, the second drive mechanism 34 activates, driving the locking element 32 into the locked position, whereby the locking element 32 locks the protective mechanism 31 in a predetermined position. Simultaneously, the first drive mechanism 33 activates, moving the protective mechanism 31 to the shielded position, completely covering the switch 20 on the cabinet door 12, achieving physical isolation and preventing misoperation or accidental contact. This dual control mechanism—locking first, then driving to the correct position—ensures the reliability and safety of the protective action. When operation or maintenance of switch 20 is required, the system enters the release process. The second drive mechanism 34 actuates first, driving the locking element 32 to switch from the locked position to the released position, disengaging the locking element 32 from the protective mechanism 31 and releasing the mechanical lock. At this time, the protective mechanism 31 is no longer constrained by the locking element 32, and the first drive mechanism 33 then starts, driving the protective mechanism 31 from the shielded position to the avoidance position. In the avoidance position, the protective mechanism 31 completely moves away from the operating area of ​​switch 20, providing unobstructed operating space for operators. The entire process can be automatically executed by the control system or triggered by remote signals or local buttons to achieve intelligent interlocking control. This scheme achieves automatic deployment and retraction of the protective mechanism 31 through the coordinated action of the first drive mechanism 33 and the second drive mechanism 34, and enhances the reliability of protection through the mechanical locking function of the locking element 32. Especially in high-voltage or important power distribution scenarios, it can effectively prevent safety accidents such as live operation and accidental closing.Furthermore, since all drive mechanisms are integrated into the cabinet door 12, the structure is compact and does not occupy internal cabinet space, which helps to improve the overall integration and aesthetics of the distribution cabinet. Meanwhile, the protective mechanism can be made of transparent material, allowing operators to observe the switch status even when shielded, balancing safety and visibility requirements. The overall solution boasts advantages such as high safety, high automation, reasonable structure, and ease of maintenance, making it suitable for various application scenarios such as intelligent power distribution systems, industrial control cabinets, and outdoor ring main units.

[0039] Please refer to Figures 1 to 5 In one embodiment of the present invention, the first driving mechanism 33 includes a first driving member 331, a connecting member 332, and a first housing 333. The first housing 333 is disposed on the cabinet door 12, and a first cavity is formed between the first housing 333 and the cabinet door 12. The first driving member 331 is disposed in the first cavity. The first housing 333 has a mounting hole 334. The connecting member 332 is at least partially located in the first cavity. One end of the connecting member 332 is drivenly connected to the first driving member 331, and the other end of the connecting member 332 passes through the mounting hole 334 and is connected to the protective mechanism 31.

[0040] This solution clarifies the specific composition of the first drive mechanism 33, including three core parts: the first drive component 331, the connecting component 332, and the first housing 333. The function of the first drive mechanism 331 is to drive the protective mechanism 31 to reciprocate between the shielded position and the avoidance position, thereby controlling whether the switch 20 is exposed. The first drive component 331 is the power source of the entire drive mechanism 33, typically an electric drive element such as a micro motor, stepper motor, or linear actuator, responsible for generating the mechanical power required for movement. The first housing 333 is a protective shell fixedly installed on the cabinet door 12, forming a closed first cavity together with the cabinet door 12. The first drive component 331 is installed inside this cavity. This embedded design has multiple advantages: firstly, placing the first drive component 331 inside the cavity effectively prevents damage to the drive components from external dust, moisture, oil, or accidental contact by operators, improving the system's protection level; secondly, the presence of the first housing 333 provides a stable mounting base for the first drive component 331, reducing vibration and offset during operation and ensuring the accuracy and consistency of the drive action. The first outer casing 333 has a mounting hole 334 located at an appropriate position within the first outer casing 333, allowing a portion of the connector 332 to extend through the first outer casing 333, thus enabling power transmission between the internal first driving component 331 and the external protective mechanism 31. The connector 332, acting as an intermediate medium for power transmission, has one end located within the first cavity, forming a drive connection with the output shaft of the first driving component 331 (such as a motor shaft, push rod, or gear), which can transmit motion via a coupling, gear meshing, threaded engagement, or pin connection. The other end passes through the mounting hole 334, extending to the outside of the first outer casing 333 and directly connecting to the protective mechanism 31. This design completely encloses the power system within a protected space, outputting motion only through a controlled channel (mounting hole 334), ensuring both airtightness and complete functional transmission. The connector 332 can be designed as a push rod, connecting rod, wire rope, rack and pinion, or flexible shaft, depending on the type of motion, to adapt to different movement modes of the protective mechanism, such as linear sliding, rotational flipping, or folding and unfolding. Furthermore, this structural design fully considers the efficiency of mechanical transmission during operation and long-term durability. The portion of the connector 332 passing through the mounting hole 334 can be equipped with a sealing ring or guide bearing, which can prevent foreign objects from entering the first cavity and reduce frictional resistance during movement, ensuring smooth drive action. The first outer shell 333 is generally made of metal or high-strength engineering plastic, possessing good mechanical strength and corrosion resistance, and can adapt to the complex environments that the distribution cabinet may face, such as high temperature, humidity, or electromagnetic interference.The layout of the entire drive mechanism has also been optimized to make the power transmission path from the drive component to the protection mechanism as short and direct as possible, reducing energy loss and accumulated errors in the intermediate links, thereby ensuring that the protection mechanism can respond to control commands quickly and accurately, and achieve an operating experience of "starting and moving immediately upon opening and closing".

[0041] Please refer to Figures 1 to 5 In one embodiment of the present invention, the connector 332 includes a first connecting rod 3321 and a second connecting rod 3322, and the mounting hole 334 includes a first mounting hole 3341 and a second mounting hole 3342.

[0042] The first driving component 331 includes a motor 3311, a worm gear 3312, a worm wheel 3313, and a rotating rod 3314. The output end of the motor 3311 is connected to the worm gear 3312, and the output shaft of the motor 3311 is connected to the worm gear 3312. The worm gear 3312 meshes with the worm wheel 3313, and the worm wheel 3313 is sleeved on the rotating rod 3314. The first connecting rod 3321 and the second connecting rod 3322 are respectively connected to the rotating rod 3314 and are arranged at intervals along the length direction of the rotating rod 3314. The other end of the first connecting rod 3321 passes through the first mounting hole 3341 and is connected to the protective mechanism 31. The other end of the second connecting rod 3322 passes through the second mounting hole 3342 and is connected to the protective mechanism 31.

[0043] The first driving component 331 consists of four parts: a motor 3311, a worm gear 3312, a worm wheel 3313, and a rotating rod 3314. The motor 3311 serves as the power source for the entire drive system, and its output shaft is directly connected to the worm gear 3312. When the motor starts, it drives the worm gear 3312 to rotate synchronously. The worm gear 3312 and the worm wheel 3313 form a meshing transmission relationship. The worm gear transmission has a significant speed reduction and torque increase effect, enabling the output of power at a lower speed but with greater torque even when the motor speed is high. Furthermore, the worm gear transmission has a self-locking characteristic; that is, when the worm gear 3312 is not actively rotating, the worm wheel 3313 cannot drive the worm gear 3312 to rotate in the reverse direction. When the protective mechanism 31 is in the shielded position and locked by the locking component 32, even if there is an external impact or vibration, the worm wheel 3313 cannot drive the motor 3311 in the reverse direction, thus effectively preventing the protective mechanism from moving accidentally due to external forces and improving the passive safety of the system. The worm gear 3313 is sleeved on the rotating rod 3314 and can be fixedly connected to it (including but not limited to through a keyway, set screw, or interference fit), so that the rotational motion of the worm gear 3313 can directly drive the rotating rod 3314 to rotate synchronously. The rotating rod 3314, as a power output shaft, is installed through the first housing 333 and is connected to the first connecting rod 3321 and the second connecting rod 3322 along its length. These two connecting rods are arranged at intervals along the axial direction of the rotating rod 3314, forming a double-point support structure. When the rotating rod 3314 rotates under the drive of the worm gear 3313, the first connecting rod 3321 and the second connecting rod 3322 will perform circular motion accordingly, and push or pull the protective mechanism 31 through their other ends to achieve its reciprocating motion. This double-connecting rod design significantly improves the smoothness of the motion and the uniformity of the force. Compared to single-point connections, dual-connecting rods effectively prevent the protective mechanism from deflecting, jamming, or twisting during movement. Especially when the protective mechanism is long or subjected to uneven force, dual-point drive ensures parallel and synchronous movement, reducing wear and extending service life. The connector 332 is composed of a first connecting rod 3321 and a second connecting rod 3322, which pass through the first mounting hole 3341 and the second mounting hole 3342 on the first housing 333, extending to the outside of the first housing 333 and connecting to the protective mechanism 31. These two mounting holes 3341 and 3342 are symmetrically or rationally distributed on the first housing 333, ensuring a stable path for the connecting rods as they pass through. The edges of the mounting holes can be fitted with sealing rings or guide bushings, which prevent dust, moisture, and other contaminants from entering the first cavity and affecting the normal operation of the internal motor and transmission components, while also providing guidance and support for the movement of the connecting rods, reducing shaking and friction. The outer ends of the first connecting rod 3321 and the second connecting rod 3322 are, but are not limited to, fixed to the protective mechanism 31 by means of hinge, threaded connection or snap fastener, so that the rotational motion of the rotating rod 3314 can be efficiently converted into the linear sliding or swinging of the protective mechanism.

[0044] Please refer to Figures 1 to 5 In one embodiment of the present invention, the protective mechanism 31 includes a protective cover 311 and a limiting part 312. The limiting part 312 is provided on the protruding structure of the protective cover 311. The protective cover 311 is driven to be connected to the first driving mechanism 33. The first driving mechanism 33 drives the protective cover 311 to move so that the locking member 32 is limited to the limiting part 312. The protective cover 311 has a receiving cavity and an opening communicating with the receiving cavity. In the locked position, the switch 20 is at least partially received in the receiving cavity through the opening.

[0045] The protective mechanism 31 consists of two main parts: a protective cover 311 and a limiting part 312. The protective cover 311 is the core component for achieving physical shielding. It is typically a hollow shell structure with an internal accommodating cavity that communicates with the outside through an opening. When the protective cover 311 moves to the shielding position under the drive of the first drive mechanism 33, the switch 20 extends at least partially into the accommodating cavity through the opening, thus being completely or partially enclosed within the protective cover 311. This embedded shielding design has multiple advantages: firstly, it minimizes direct contact between external objects and the switch 20, preventing accidental activation, impact from foreign objects, or liquid splashing; secondly, because the switch 20 is housed within the accommodating cavity, the protective cover 311 has a better fit to its shape, resulting in a more compact overall structure, a cleaner appearance, and effectively reducing the impact of electric arcs or sparks generated during switch operation on the external environment, thus improving insulation and fire resistance. Secondly, the limiting part 312 is a protruding structure on the protective cover 311, which functions to form a mechanical limiting engagement with the locking member 32. This protruding structure can be pin-shaped, block-shaped, hook-shaped, or a boss with a groove; its specific shape can be designed to match the structure of the locking member 32. When the protective cover 311 moves to the shielded position, the limiting part 312 aligns with the locking member 32, and the second drive mechanism 34 then drives the locking member 32 to engage or abut against the limiting part 312, thereby firmly fixing the protective cover 311 in that position. This limiting engagement ensures that the protective cover 311 will not shift or automatically slide due to vibration, impact, or external force pushing or pulling, and can maintain a stable locked state even if electromagnetic force or mechanical vibration occurs during equipment operation. More importantly, the existence of the limiting part 312 provides a clear positioning reference for the locking action, enabling the locking member 32 to complete locking at the correct time and position, avoiding locking failure or jamming due to positional deviation, and improving the reliability and repeatability of the system. The protective cover 311, connected to the first drive mechanism 33, moves along a predetermined trajectory under the drive of the first drive member 331, achieving automatic opening and closing. When it reaches its endpoint (i.e., the shielded position), the limiting part 312 acts as a mechanical stop and locking interface, forming a rigid connection with the locking member 32, thus providing dual safety protection: firstly, the first drive mechanism 33 maintains its output force to maintain the position; secondly, the locking member 32 provides mechanical locking to prevent any unauthorized movement. This dual-insurance mechanism significantly improves the inherent safety level of the system, making it particularly suitable for industrial power distribution scenarios with extremely high operational safety requirements, such as high-voltage switchgear, automated production line control cabinets, or rail transit equipment cabinets. Furthermore, the design of the accommodating cavity and opening also considers operational compatibility and ergonomics. The size and shape of the opening can be designed according to the shape of the switch 20, ensuring that it can accommodate the switch without leaving excessive gaps that could cause protection failure.When operation is required, the first drive mechanism 33 first moves the protective cover 311 away, fully exposing the switch 20; after the operation is completed, the protective cover 311 resets, and the switch 20 is retracted into the receiving cavity, restoring the protective state. The entire process is completed automatically without manual intervention, which improves operational efficiency and avoids safety hazards caused by human negligence.

[0046] Please refer to Figures 1 to 5 In one embodiment of the present invention, the protective cover 311 includes a base 313 and a cover body 3142. The cover body 3142 is disposed on the base 313, and the cover body 3142 and the base 313 enclose a cavity. The base 313 has the opening. One end of the base 313 is connected to the connector 332, and the limiting part 312 is disposed at the other end of the base 313. One of the base 313 and the cover body 3142 is provided with a positioning post, and the other is provided with a positioning hole. The positioning post is engaged with the positioning hole so that the base 313 and the cover body 3142 are engaged and cooperated.

[0047] The protective cover 311 consists of two parts: a base 313 and a cover body 3142. The base 313 serves as the basic load-bearing component. One end is connected to the first drive mechanism 33 via a connector 332 (such as the first connecting rod 3321 and the second connecting rod 3322), receiving the driving force from the rotating rod 3314 to achieve overall movement. The other end is provided with a limiting part 312, which forms a limiting engagement with the locking part 32 to ensure that the protective cover 311 can be securely locked in the shielded position. The base 313 also has an opening that communicates with the internal accommodating cavity. When the protective cover 311 moves to the shielded position, the switch 20 extends at least partially into the accommodating cavity through this opening, achieving physical isolation. The cover body 3142 is fixedly mounted on the base 313, together with the base forming a complete accommodating cavity, serving a sealing and protective function. This split-structure design means that the protective cover 311 is no longer a single, monolithic component, but rather a combination of two functionally distinct parts. This facilitates separate manufacturing based on different materials or processes. For example, the base 313 can be made of high-strength engineering plastics or metal to ensure structural rigidity and connection strength, while the cover 3142 can be made of transparent or semi-transparent material to facilitate observation of the internal switch status, enhancing the human-machine interface. Secondly, the base 313 and the cover 3142 are connected via a snap-fit ​​mechanism using positioning pins and positioning holes. Specifically, one of the base 313 and the cover 3142 has a positioning pin, and the other has a corresponding positioning hole. When the two are mated, the positioning pin inserts into the positioning hole, forming a reliable mechanical snap-fit. First, it enables rapid assembly without the need for screws, glue, or other fasteners, significantly improving production efficiency. Second, the precise fit between the positioning pins and positioning holes ensures accurate relative positioning between the cover 3142 and the base 313, preventing problems such as cavity deformation, opening misalignment, or movement interference caused by assembly deviations. Third, the snap-fit ​​structure has a certain degree of elasticity, absorbing vibration energy under slight impacts, reducing stress concentration, and extending service life. Furthermore, this design facilitates later maintenance; when the cover 3142 shows wear, aging, or contamination due to long-term use, it can be disassembled and replaced individually without the need to scrap the entire protective cover 311, reducing maintenance costs and resource waste.

[0048] Please refer to Figures 1 to 5 In one embodiment of this utility model, the base 313 and the cover 3142 are made of transparent material.

[0049] The design of this material choice aims to address the blind spots caused by traditional metal or opaque plastic protective covers. In previous distribution cabinet designs, once the protective cover is closed, the internal switches are completely obscured, making it impossible for operators to confirm their true status. Operators often rely on memory, labels, or additional indicator lights to determine this, increasing the risk of misoperation. This is especially problematic in scenarios with multiple switches arranged in parallel or in emergency situations, where the inability to visually confirm the status of target switches can lead to serious safety accidents. By using transparent materials, the protective and observation functions are integrated. The protective cover 311 physically isolates operators from live parts, ensuring personal safety, while simultaneously acting as an "observation window," allowing light to pass through and transmit crucial visual information, achieving visible safety. Furthermore, the selection of transparent materials includes, but is not limited to, polycarbonate (PC) or acrylic resin (PMMA). These materials not only possess good light transmittance but also excellent mechanical strength, heat resistance, aging resistance, and electrical insulation properties, meeting the requirements for distribution cabinet use in industrial environments. These materials are highly impact-resistant and not easily broken. They can maintain structural integrity even under frequent movement and vibration conditions. They also have good dimensional stability, ensuring that the snap-fit ​​between the positioning post and the positioning hole is reliable for a long time and will not loosen or fail to seal due to material deformation.

[0050] Please refer to Figures 1 to 5 In one embodiment of the present invention, the cover 3142 is arc-shaped, and the base 313 includes a base body 3131, a first bracket 3132 and a second bracket 3133. The first bracket 3132 and the second bracket 3133 are disposed opposite to each other on the base body 3131. The other ends of the first bracket 3132 and the second bracket 3133 are both arc-shaped extensions to be adapted to the cover 3142 for installation.

[0051] The enclosure 3142 is arc-shaped, and its shape is not a flat or right-angled box, but a shell structure curved along a certain curvature direction. This arc design has better resistance to pressure and deformation in mechanics, effectively dispersing external impact forces or internal stresses, and avoiding cracking or deformation caused by localized stress concentration. On the other hand, the arc shape is more in line with ergonomic and industrial aesthetic requirements, with a smooth surface without sharp corners, which not only enhances the overall visual quality of the equipment, but also reduces dust accumulation and facilitates cleaning, making it suitable for industrial or public places with high requirements for environmental cleanliness. More importantly, the arc-shaped enclosure 3142 can better fit the contour of the cabinet door 12 or the equipment layout around the switch 20, avoiding spatial interference or protruding bumps caused by straight structures, thereby achieving a more compact and safer integrated installation. Secondly, the base 313 consists of three parts: the base body 3131, the first bracket 3132, and the second bracket 3133. The base body 3131 serves as the basic platform, connecting to the connector 332, and has an opening at one end for the switch 20 to extend into the receiving cavity. Simultaneously, a limiting part 312 is located at the other end of the base body 3131, used to cooperate with the locking part 32 to achieve position locking. The first bracket 3132 and the second bracket 3133 are positioned opposite each other on either side of the base body 3131, forming a symmetrical support structure. The other ends of both brackets extend in an arc shape, their curvature matching the arc shape of the cover 3142. This ensures that when the cover 3142 is installed on the base 313, its arc-shaped outer wall fits tightly against the arc-shaped extensions of the first bracket 3132 and the second bracket 3133, providing stable support and precise positioning. This structural design ensures that the cover 3142 will not wobble, shift, or twist after installation, maintaining good alignment and structural consistency even during frequent reciprocating movements of the protective cover 311. The design purpose of this scheme is not only aesthetic improvement but also to enhance assembly precision and structural reliability. The arc-shaped extensions of the first bracket 3132 and the second bracket 3133 adapt to the arc surface of the cover 3142, forming a line contact or surface contact support relationship. Compared with point contact or rigid clips, this allows for a more even distribution of force, reducing local stress concentration and preventing the cover 3142 from cracking or loosening due to long-term vibration or temperature changes. Simultaneously, this arc-shaped adaptation structure provides additional guidance for the cover 3142, guiding it to accurate positioning during installation and facilitating quick assembly and disassembly, especially suitable for scenarios requiring regular maintenance or replacement of the cover 3142. Furthermore, the arc-shaped design helps improve the sealing performance of the protective cover 311. When the cover 3142 is tightly fitted with the arc-shaped ends of the first bracket 3132 and the second bracket 3133, the gap between them is smaller and more evenly distributed. Combined with sealing strips or elastic gaskets, this effectively prevents dust, moisture, oil, or small insects from entering the cavity, protecting the switch 20 from environmental influences and extending its service life.This is especially important for distribution cabinets operating in humid, dusty, or corrosive environments.

[0052] Please refer to Figures 1 to 5 In one embodiment of the present invention, the locking member 32 is recessed to form a groove, and in the locked position, the protruding structure is confined within the groove.

[0053] The locking member 32 has a recessed groove, which is an inwardly excavated cavity structure. Its shape can be designed to match the protruding structure of the limiting part 312, including but not limited to rectangular grooves, U-shaped grooves, semi-circular grooves, or dovetail grooves. When the protective cover 311 moves to the shielded position under the drive of the first drive mechanism 33, the limiting part 312 on the protective cover 311 also moves into place. At this time, the second drive mechanism 34 is activated, driving the locking member 32 to align its groove with and fit onto the protruding structure of the limiting part 312, thus completely embedding the protruding structure into the groove. This structure achieves a rigid connection between the locking member 32 and the limiting part 312, firmly fixing the protective cover 311 in its shielded position and preventing any displacement without authorization or unlocking.

[0054] Please refer to Figures 1 to 5 In one embodiment of this utility model, the second driving mechanism 34 includes a second driving member 341, a connecting rod assembly 342, a guide assembly 343, and a second housing 344. The second housing 344 is disposed on the cabinet door 12 and forms a second cavity with the cabinet door 12. The second driving member 341, the connecting rod assembly 342, and the guide assembly 343 are all disposed in the second cavity. The two ends of the connecting rod assembly 342 are respectively connected to the inner walls of the two opposite sides of the second housing 344. The guide assembly 343 is sleeved on the connecting rod assembly 342 and can slide along the axial direction of the connecting rod assembly 342. The guide assembly 343 is pultrusively connected to the locking member 32. The driving end of the second driving member 341 is connected to the locking member 32 and is used to drive the locking member 32 to move between the locked position and the unlocked position.

[0055] The design clarifies that the second drive mechanism 34 consists of four parts: the second drive component 341, the connecting rod assembly 342, the guide component assembly 343, and the second housing 344. This structure not only completely encapsulates the drive system within a protected environment but also ensures smooth, precise, and low-wear movement of the locking component 32 between the locked and released positions through a connecting rod guiding mechanism. This provides the technical support for ensuring the reliable execution of the safety interlock function of the protective device 30. Firstly, the second housing 344 is the structural foundation of the entire second drive mechanism 34. It is fixedly mounted on the cabinet door 12 and together with the door, forms a closed second cavity. This second cavity, as an independent internal space, accommodates core components such as the second drive component 341, the connecting rod assembly 342, and the guide component assembly 343. On the one hand, sealing all moving parts within the cavity effectively prevents external dust, moisture, oil, or accidental contact by operators from contaminating or damaging the drive system, significantly improving the system's protection level (such as IP rating) and service life. On the other hand, the second housing 344 provides a stable mounting platform for the internal components, ensuring that each component maintains a precise relative position during operation, avoiding misalignment or jamming due to loosening or displacement. The second drive element 341 is the power source for the second drive mechanism 34, including but not limited to electric drive components such as miniature electromagnets, servo motors, stepper motors, or linear actuators. Its function is to generate the mechanical power required to drive the locking element 32. The drive end of the second drive element 341 (such as a push rod, rotating shaft, or output arm) is directly or indirectly connected to the locking element 32. When the control system issues a command, the second drive element 341 starts, outputting linear or rotary motion to push or pull the locking element 32 between the locked and released positions. The locking position corresponds to the fixed state of the protective mechanism 31. At this time, the locking member 32 cooperates with the limiting part 312 to prevent the protective cover 311 from moving. The release position corresponds to the unlocked state, allowing the first drive mechanism 33 to drive the protective cover 311 to move away, exposing the switch 20 for operation. To ensure smooth and accurate movement of the locking member 32, this solution introduces a guide transmission system composed of a linkage assembly 342 and a guide assembly 343. The two ends of the linkage assembly 342 are respectively connected to the inner walls of the opposite sides of the second housing 344, forming a fixed axis that runs through the second cavity. The linkage assembly 342 can be a single or multiple parallel cylindrical guide rods, which serve as guide rails to provide a linear guide reference for subsequent moving parts. The guide assembly 343 is sleeved on the linkage assembly 344 and can slide freely along its axial direction. The guide component 343 and the locking component 32 are connected by a mechanical connection (such as a hinge, threaded connection or fixed arm connection) to achieve transmission linkage, so that when the second driving component 341 moves, its power is transmitted to the locking component 32 through the sliding of the guide component 343 on the connecting rod assembly 342, thereby driving the locking component 32 to complete linear reciprocating motion.By cooperating with the linkage assembly 342 and the guide assembly 343, the movement trajectory of the locking member 32 is forcibly constrained, ensuring that it always moves along a predetermined straight line, thus avoiding frictional loss and structural deformation caused by lateral forces.

[0056] Please refer to Figures 1 to 5 In one embodiment of the present invention, the linkage assembly 342 includes a first linkage 3421 and a second linkage 3422, and the guide assembly 343 includes a first guide and a second guide. The first linkage 3421 and the second linkage 3422 are respectively connected to the inner walls of the two opposite sides of the second housing 344. The first guide is sleeved on the first linkage 3421, and the second guide is sleeved on the second linkage 3422. The two ends of the locking member 32 are respectively connected to the first guide and the second guide.

[0057] First, the first connecting rod 3421 and the second connecting rod 3422, as two components of the connecting rod assembly 342, are fixedly connected to the inner walls of the opposite sides of the second housing 344, forming a parallel and symmetrical support structure. These two connecting rods extend along the same axis, penetrating the interior of the second cavity, forming two parallel guide tracks. The ends of the first connecting rod 3421 and the second connecting rod 3422 can be firmly fixed to the inner wall of the second housing 344 by means of threaded connection, press fit, or welding, ensuring that the basic structure of the entire guiding system is stable and reliable, and will not loosen due to vibration or impact. Based on this, the first guide element is sleeved on the first connecting rod 3421, and the second guide element is sleeved on the second connecting rod 3422, forming two independent sliding pairs. The first and second guide elements include, but are not limited to, sliding sleeves, linear bearings, or oil-impregnated bushing structures, whose inner holes fit with the outer diameter of the connecting rods, ensuring smooth sliding while effectively limiting radial runout. This dual-guide element design changes the support point of the moving parts from a single point to two points, significantly improving the load-bearing capacity and stability of the guiding system. When the second driving member 341 actuates, power is transmitted to the first and second guide members through the locking member 32. Both guide members slide synchronously along the first and second connecting rods 3421 and 3422, causing the locking member 32 to perform a linear reciprocating motion. The two ends of the locking member 32 are connected to the first and second guide members respectively, forming a structure with support at both ends and drive in the middle. This connection method ensures that the locking member 32 experiences highly symmetrical forces during movement, avoiding the cantilever effect common in traditional single-sided guide structures, where one end is fixed and the other swings freely, easily leading to tilting, jamming, or increased wear due to eccentric torque. In this design, because both ends are supported by guide members, even if the thrust of the second driving member 341 has a certain eccentricity or there is external interference, the locking member 32 can still maintain horizontal and stable movement without twisting or lateral displacement, thus ensuring the accuracy of its fit with the limiting part 312 and improving the reliability of locking and releasing actions.

[0058] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A power distribution cabinet, characterized in that, include: The cabinet includes a cabinet body and a cabinet door, wherein the cabinet door is movably connected to the cabinet body; The switch is located at the cabinet door; The protective device includes a protective mechanism, a locking element, a first driving mechanism, and a second driving mechanism. One end of the protective mechanism is drivenly connected to the first driving mechanism, and the other end is movably connected to the locking element. Both the first driving mechanism and the second driving mechanism are installed on the cabinet door. The second driving mechanism is provided with the locking element, and the second driving mechanism drives the locking element to move between a locked position and a released position. In the locked position, the second drive mechanism drives the locking member to lock with the protective mechanism, and the first drive mechanism drives the protective mechanism to a shielded position to cover the switch; in the released position, the second drive mechanism drives the locking member to separate from the protective mechanism, and the first drive mechanism drives the protective mechanism to move relative to the cabinet door so that the protective mechanism is in a clearance position to release the cover of the switch.

2. The power distribution cabinet according to claim 1, characterized in that, The first driving mechanism includes a first driving member, a connecting member, and a first housing. The first housing is disposed on the cabinet door, and a first cavity is formed between the first housing and the cabinet door. The first driving member is disposed in the first cavity. The first housing has an installation hole. The connecting member is at least partially located in the first cavity. One end of the connecting member is drivenly connected to the first driving member, and the other end of the connecting member passes through the installation hole and is connected to the protective mechanism.

3. The power distribution cabinet according to claim 2, characterized in that, The connector includes a first connecting rod and a second connecting rod, and the mounting hole includes a first mounting hole and a second mounting hole; The first driving component includes a motor, a worm gear, a worm wheel, and a rotating rod. The output end of the motor is connected to the worm gear, and the output shaft of the motor is connected to the worm gear. The worm gear meshes with the worm wheel, and the worm wheel is sleeved on the rotating rod. The first connecting rod and the second connecting rod are respectively connected to the rotating rod and are arranged at intervals along the length direction of the rotating rod. The other end of the first connecting rod passes through the first mounting hole and is connected to the protective mechanism, and the other end of the second connecting rod passes through the second mounting hole and is connected to the protective mechanism.

4. The power distribution cabinet according to claim 2, characterized in that, The protective mechanism includes a protective cover and a limiting part. The limiting part is provided on a protruding structure on the protective cover. The protective cover is driven to be connected to the first driving mechanism. The first driving mechanism drives the protective cover to move so that the locking member is limited to the limiting part. The protective cover has a receiving cavity and an opening communicating with the receiving cavity. In the locked position, the switch is at least partially received in the receiving cavity through the opening.

5. The power distribution cabinet according to claim 4, characterized in that, The protective cover includes a base and a cover body. The cover body is disposed on the base, and the cover body and the base enclose a cavity. The base has the opening. One end of the base is connected to the connector. The limiting part is disposed at the other end of the base. One of the base and the cover body is provided with a positioning post, and the other is provided with a positioning hole. The positioning post engages with the positioning hole so that the base and the cover body engage and cooperate.

6. The power distribution cabinet according to claim 5, characterized in that, The base and the cover are made of transparent material.

7. The power distribution cabinet according to claim 5, characterized in that, The cover is arc-shaped, and the base includes a base body, a first bracket, and a second bracket. The first bracket and the second bracket are disposed opposite to each other on the base body. The other ends of the first bracket and the second bracket are arc-shaped extensions to fit and install with the cover.

8. The power distribution cabinet according to claim 4, characterized in that, The locking member has a recessed groove, and in the locked position, the protruding structure is confined within the groove.

9. The power distribution cabinet according to claim 1, characterized in that, The second driving mechanism includes a second driving member, a connecting rod assembly, a guide assembly, and a second housing. The second housing is disposed on the cabinet door and forms a second cavity with the cabinet door. The second driving member, the connecting rod assembly, and the guide assembly are all disposed in the second cavity. The two ends of the connecting rod assembly are respectively connected to the inner walls of the two opposite sides of the second housing. The guide assembly is sleeved on the connecting rod assembly and can slide along the axial direction of the connecting rod assembly. The guide assembly is pultrusively connected to the locking member. The driving end of the second driving member is connected to the locking member and is used to drive the locking member to move between the locked position and the unlocked position.

10. The power distribution cabinet according to claim 9, characterized in that, The linkage assembly includes a first linkage and a second linkage, and the guide assembly includes a first guide and a second guide. The first linkage and the second linkage are respectively connected to the inner walls of the two opposite sides of the second housing. The first guide is sleeved on the first linkage, and the second guide is sleeved on the second linkage. The two ends of the locking member are respectively connected to the first guide and the second guide.

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