A portable adjustable double door distribution box

Abstract

The application relates to the field of distribution boxes, in particular to a portable double-layer door distribution box. The portable double-layer door distribution box comprises a cabinet body, an outer door connected to the cabinet body and the like. The application realizes the following: through the linkage structure formed by the inner door, the sliding partition plate, the first spring and the electromagnet, during the opening and closing of the cabinet door, the electromagnet is powered off, the first spring pushes the sliding partition plate to protrude forward, the through groove and the electrical elements maintain an avoidance gap, and the knocking and extrusion of the inner door during the rotation opening and closing of the inner door and the electrical elements are completely avoided; after the cabinet door is closed, the sliding partition plate is pushed backward and fixed through the magnetic attraction of the electromagnet, the rubber frame in the through groove is flexibly attached to the edge of the electrical elements, internal line partition isolation is realized, dust and water vapor invasion is blocked, personnel mis-touch is prevented to cause electric shock accidents, hard structure scratching damage to the electrical elements is avoided, and multiple effects of equipment protection, sealing and element protection are considered.

Description

Technical Field

[0001] This invention relates to the field of distribution boxes, and more particularly to a portable, adjustable double-door distribution box. Background Technology

[0002] Existing double-door distribution boxes employ a double-opening structure with an outer door for protection and an inner door for isolation. Compared to single-door boxes, this offers significant advantages such as higher protection levels, better internal isolation, and improved equipment organization. The inner door is the core isolation and protection component. To accommodate the installation layout of various protruding electrical components such as circuit breakers, terminal blocks, and relays within the box, corresponding slots are typically provided on the inner door. In standard industry designs, when the inner door is fully closed, the inner edge of the slot can tightly fit against the outer edge of the electrical components. Through the corresponding fit between the slot and each electrical component, the isolated arrangement of components and connecting lines within the box is achieved.

[0003] However, existing double-door distribution boxes use a single-sided hinge for both the inner and outer doors, resulting in a rotating opening and closing mechanism. During the opening and closing process, the door swings in an arc around the side hinge, causing dynamic displacement between the inner side of the door and the electrical components inside the box. If the slot size perfectly matches the edge of the electrical component, the edge of the slot is very likely to collide and be squeezed against the protruding electrical components inside the box during the door's rotation. This can cause door deformation, hinge loosening, and damage to the slot edge, as well as displacement of internal electrical components, shell cracking, and wire detachment, seriously affecting the normal operation of the equipment. Summary of the Invention

[0004] To overcome the shortcomings of existing double-door distribution cabinets where the inner door slot size needs to match the edge of electrical components, and the inner door opening and closing can easily cause the slot edge to collide and squeeze with the protruding electrical components inside the cabinet, resulting in damage to the electrical components and affecting the normal use of the equipment, this invention provides a portable and adjustable double-door distribution box.

[0005] The technical solution is as follows: A portable and adjustable double-door electrical distribution box includes a cabinet; an outer door connected to the cabinet; an inner door installed inside the cabinet; a sliding partition slidably connected to the inner door; several through slots opened on the sliding partition; several first springs fixedly connected between the sliding partition and the inner door; an electromagnet fixedly connected to the inner door; the electromagnet contacting the sliding partition; an installation assembly for installing electrical components connected inside the cabinet; several thermal aerosol fire extinguishing devices fixedly connected to the outer door; each thermal aerosol fire extinguishing device aligned with a corresponding through slot; and a smoke sensor installed inside the cabinet.

[0006] As a further preferred option, the mounting components include DIN rails and slide rails, mounting brackets, and clamps connected to the cabinet; several symmetrical slide rails are fixedly mounted inside the cabinet; each pair of corresponding slide rails is slidably connected to a mounting bracket via a slider, and each through slot is aligned with the corresponding mounting bracket; each slide rail is slidably connected to a clamp; each clamp is fixedly connected to a corresponding mounting bracket; and each mounting bracket is connected to a DIN rail.

[0007] As a further preferred option, each DIN rail is equipped with markings.

[0008] As a further preferred option, a rubber frame connected to the sliding partition is also included.

[0009] As a further preferred option, the front of the cabinet is detachably connected to a disassembly frame; the outer door, inner door, sliding partition and their connecting parts are all installed on the disassembly frame.

[0010] As a further preferred option, the outer door, inner door, and sliding partition are all made of flame-retardant insulating board material.

[0011] With the above-mentioned structure, the outer door, inner door and sliding partition are all made of high-density fiberglass flame-retardant insulation board, which has excellent insulation performance, can effectively block leakage current conduction, and at the same time has good mechanical strength, flame retardancy and high temperature resistance.

[0012] As a further preferred embodiment, it also includes sliding rods connected to DIN rails; each sliding rod passes through a corresponding mounting bracket; and a second spring is fixed between each sliding rod and the mounting bracket.

[0013] As a further preferred embodiment, it also includes locking blocks connected to the mounting bracket; each locking block is provided with a locking slot; each locking slot faces the corresponding DIN rail.

[0014] As a further preferred option, warning signs are also included; several warning signs are fixed inside the cabinet.

[0015] By adopting the above structure, the present invention provides warning signs with warnings such as "electrical danger" and "prohibition of unauthorized operation" to provide continuous visual reminders to operators, effectively preventing misoperation and accidental contact, and further improving the safety level of equipment operation and maintenance.

[0016] As a further preferred option, it also includes an alarm light; an alarm light is installed on the cabinet.

[0017] With the above-described structure, when the smoke sensor detects abnormal faults such as short circuit, overload, leakage, and fire inside the cabinet, the control system can trigger the alarm light to flash synchronously, realizing a visual and auditory prompt for the fault, which makes it easier for staff to detect equipment abnormalities and handle them in a timely manner.

[0018] Compared with the prior art, the present invention has the following advantages: the inner door, sliding partition, first spring and electromagnet form a linkage structure: during the opening and closing of the cabinet door, the electromagnet is de-energized, the first spring pushes the sliding partition forward to maintain a clearance between the through groove and the electrical components, completely avoiding collision and squeezing between the inner door and the electrical components when the inner door rotates and opens; after the cabinet door is closed, the sliding partition is pushed backward and fixed by the electromagnet magnetic attraction, and the rubber frame in the through groove flexibly fits the edge of the electrical components, which not only realizes the partitioning and isolation of the internal circuit, blocking the intrusion of dust and moisture, but also prevents personnel from accidentally touching and causing electric shock accidents, while avoiding the scratching and damage of electrical components by hard structures, and taking into account multiple effects of equipment protection, sealing and component protection.

[0019] By installing the thermal aerosol fire extinguishing device within a sealed compartment formed by the outer and inner doors, it achieves physical isolation from the electrical components inside the cabinet. Furthermore, the device is equipped with an independent external power supply line, unaffected by electrical faults within the cabinet. When a short circuit, overload, or leakage occurs inside the cabinet and triggers a fire, the system cuts off the power supply. The electromagnet simultaneously demagnetizes, and the first spring moves the sliding partition forward, automatically opening the fire extinguishing channel. The thermal aerosol fire extinguishing device can then spray the extinguishing medium normally, quickly extinguishing open flames and suppressing the spread of fire. This solves the problem of traditional fire extinguishing devices being easily affected by fire and thus failing, significantly improving the reliability of fire protection.

[0020] The cabinet is equipped with slide rails, a fixing bracket, and clamps, which can move the DIN rail and electrical components back and forth to calibrate their positions without the need for additional shims for leveling, simplifying the traditional assembly process. Furthermore, the sliding rod and second spring mounted on the rear of the DIN rail form an elastic floating assembly that can adaptively compensate for positional deviations of the front face m of the electrical components, ensuring a tight fit even with minor installation errors. Simultaneously, the sliding blocks on the fixing bracket can temporarily lock the DIN rail during component installation to prevent it from shifting or deviating; once assembly is complete, releasing the limit lock restores the floating function. The markings on the DIN rail surface can serve as alignment references, further improving installation efficiency and alignment accuracy. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the portable adjustable double-door distribution box of the present invention.

[0022] Figure 2 This is a diagram showing the outer door in the open state according to the present invention;

[0023] Figure 3 This is a diagram showing the simultaneous opening of the outer and inner doors of the present invention.

[0024] Figure 4 This is a diagram showing the disassembly frame of the present invention in its removed state;

[0025] Figure 5 Exploded view of the cabinet body, disassembly frame, outer door, inner door and slide rail of the present invention;

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the inner door, sliding partition, rubber frame, first spring and electromagnet combination of the present invention;

[0027] Figure 7 This is a three-dimensional structural diagram of the DIN guide rail, slide rail, fixing bracket, clamp, sliding rod, second spring and locking block combination of the present invention;

[0028] Figure 8 This is a cross-sectional view of the fixing frame of the present invention;

[0029] Figure 9 This is a diagram showing the fire extinguishing state of the thermal aerosol fire extinguishing device of the present invention.

[0030] Among them: 1-cabinet, 1001-disassembly frame, 2-DIN rail, 2001-marking, 101-outer door, 102-inner door, 103-sliding partition, 10301-through groove, 104-rubber frame, 105-first spring, 106-electromagnet, 107-slide rail, 108-fixed bracket, 109-clamping device, 201-sliding rod, 202-second spring, 203-block, 20301-slot, 204-thermal aerosol fire extinguishing device, 205-warning sign, 206-alarm light. Detailed Implementation

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: A portable, adjustable double-door electrical distribution box, such as... Figures 1-9 As shown, it includes cabinet 1;

[0033] It also includes an outer door 101, an inner door 102, a sliding partition 103, a first spring 105, an electromagnet 106, a thermal aerosol fire extinguishing device 204, and mounting components; the outer door 101 is installed on the cabinet 1; the inner door 102 is installed inside the cabinet 1; the sliding partition 103 is slidably connected to the inner door 102; the sliding partition 103 has several through slots 10301; several first springs 105 are fixed between the sliding partition 103 and the inner door 102; the electromagnet 106 is fixedly connected to the inner door 102; the electromagnet 106 is in contact with the sliding partition 103; the mounting components are connected inside the cabinet 1; several thermal aerosol fire extinguishing devices 204 are fixedly connected to the outer door 101; each thermal aerosol fire extinguishing device 204 is aligned with a corresponding through slot 10301; a smoke sensor is installed inside the cabinet 1.

[0034] The mounting components include DIN rails 2, slide rails 107, mounting brackets 108, and clamps 109; several left-right symmetrical slide rails 107 are fixedly connected inside the cabinet 1; each pair of corresponding slide rails 107 is slidably connected to a mounting bracket 108 via a slider, and each through slot 10301 is aligned with the corresponding mounting bracket 108; each slide rail 107 is slidably connected to a clamp 109; each clamp 109 is fixedly connected to the corresponding mounting bracket 108; each mounting bracket 108 is connected to a DIN rail 2.

[0035] Each DIN rail 2 is marked with a line 2001.

[0036] It also includes a rubber frame 104; a rubber frame 104 is fixedly connected to each through groove 10301.

[0037] The front side of the cabinet 1 is threaded with a disassembly frame 1001; the outer door 101, inner door 102, sliding partition 103 and their connecting parts are all installed on the disassembly frame 1001.

[0038] Working principle of Example 1: The worker first opens the outer door 101 and the inner door 102, then installs the electrical components on the mounting assembly inside the cabinet 1, aligning each electrical component with the corresponding through slot 10301; after assembly, the inner door 102 is closed; in the initial state of the equipment, the electromagnet 106 is in the de-energized and closed state, and cannot magnetically limit the sliding partition 103, and the first spring 105 is in the normally extended state, causing the sliding partition 103 to protrude forward relative to the inner door 102; therefore, during the closing process of the inner door 102, the through slot 10301 is positioned as a whole. The sliding partition 103 is positioned in front of the electrical components and maintains a clearance from their edges to prevent contact or collision. After the inner door 102 is fully closed, the worker pushes the sliding partition 103 backward, causing the first spring 105 to stretch and the sliding partition 103 to slide backward. When the sliding partition 103 moves backward and comes into contact with the electromagnet 106, the electromagnet 106 is energized to magnetically fix the sliding partition 103. The magnetic force of the electromagnet 106 is greater than the elastic restoring force of the first spring 105, keeping the sliding partition 103 in a locked, closed position at the rear. At this point, the through-slot 10301 precisely fits onto the outer edge of the corresponding electrical component, achieving partitioned isolation of the electrical components and wiring within the cabinet. Simultaneously, the rubber frame 104 inside the through-slot 10301 flexibly conforms to the edge of the electrical component. This enhances the sealing performance of the through-slot 10301, preventing dust and moisture from entering the cavity. Furthermore, it prevents the rigid through-slot 10301 structure from directly contacting the electrical component, preventing scratches and damage to the casing and effectively protecting the appearance and structural integrity of the electrical component. After alignment and sealing, the worker closes the outer door 101, completing the assembly reset. When the inner door 102 needs to be opened for maintenance, first open the outer door 101, then de-energize the electromagnet 106, releasing the magnetic lock on the sliding partition 103. At this time, the first spring 105 elastically resets, pushing the sliding partition 103 forward, causing the through-slot 10301 to move forward and completely disengage from the edge of the electrical component, forming a safe clearance. The inner door 102 can then be opened normally. This structure, through an adaptive switching method of "closed sealing and early opening retreat," ensures that the inner door 102 will not collide, squeeze, or scratch with electrical components during the entire opening and closing stroke. This effectively solves the problems of fixed matching between slots and electrical components in existing double-door distribution cabinets, easy interference and collisions when opening the door, easy damage to components, and impact on the stability of equipment operation.

[0039] Furthermore, due to differences in thickness and protrusion dimensions among electrical components of different models and power ratings, the front faces of the electrical components vary in height after installation. The through groove 10301 cannot accommodate the unevenness of different components, making it difficult to guarantee a proper fit and seal. To address this, the present invention integrates the DIN rail 2 for supporting the electrical components onto the mounting bracket 108. Under normal operating conditions, the clamp 109 is locked and fixed onto the slide rail 107, keeping the mounting bracket 108 in a positioned state. After the worker installs the electrical components onto the corresponding DIN rail 2, the clamp 109 can be released from its locking limit, and the installation position of the mounting bracket 108 can be finely adjusted along the slide rail 107 to uniformly calibrate the height of the front faces of each electrical component, ensuring that the front faces of all electrical components are essentially on the same plane. After calibration, the clamp 109 is locked again to achieve overall positioning of the mounting bracket 108 and the electrical components. This structure eliminates the tedious process of repeatedly adding raised bases and performing multiple leveling adjustments during traditional assembly, significantly simplifying the assembly process. Meanwhile, the DIN rail 2 has markings 2001 on its surface. When installing electrical components, workers only need to install the electrical components at the corresponding positions of markings 2001 to achieve precise alignment between the electrical components and the through slots 10301. This eliminates the need for repeated manual measurement and calibration, making installation more convenient and achieving higher alignment accuracy. Furthermore, during large-scale electrical installation or maintenance and replacement work, the disassembly frame 1001 can be completely disassembled from the cabinet 1 using threads. This allows the outer door 101, inner door 102, sliding partition 103, and their associated components to be removed along with the disassembly frame 1001, leaving only the cabinet 1 and the internal installation components. This greatly frees up the operating space inside the cabinet and significantly improves the convenience of component installation, wiring, and debugging.

[0040] Furthermore, during the operation of the distribution cabinet, when the smoke sensor inside cabinet 1 detects typical electrical faults such as short circuits, overloads, or leakage, and this triggers a fire or explosion hazard inside the cabinet, the system automatically cuts off the main power supply inside the cabinet. Simultaneously, the electromagnet 106 de-energizes and loses its magnetism, releasing its attraction and locking of the sliding partition 103; then... Figure 9As shown: The first spring 105 retracts and resets, causing the sliding partition 103 to move forward, separating the rubber frame 104 from the edge of the electrical component. Then, the rubber frame 104 inserts into the outer wall of the thermal aerosol fire extinguishing device 204, allowing the thermal aerosol fire extinguishing device 204 to extend into the cabinet 1. Subsequently, the thermal aerosol fire extinguishing device 204 sprays the extinguishing medium, quickly extinguishing the open flame inside the cabinet and suppressing the spread of the fire. Furthermore, during the operation of the distribution cabinet, the closed outer door 101 and inner door 102 form an independent enclosed space with the disassembly frame 1001. This invention integrates the thermal aerosol fire extinguishing device 204 within the enclosed space formed by the outer door 101, inner door 102, and disassembly frame 1001. The electrical components and internal wiring are all arranged inside the independent working chamber of cabinet 1, achieving physical isolation between the fire extinguishing device and the live components. Furthermore, the thermal aerosol fire extinguishing device 204 adopts an independent external power supply circuit, which does not rely on the internal power supply system of cabinet 1. Therefore, when the electrical components inside the cabinet experience faults such as short circuits, overloads, or leakage, the fault arc, high temperature, and short circuit impact will not affect or interfere with the power supply and control of the thermal aerosol fire extinguishing device 204, ensuring that the fire extinguishing device can reliably start and spray normally to extinguish the fire when a fire occurs. This effectively solves the defects of existing similar distribution cabinets where the fire extinguishing device and electrical components are arranged in the same chamber, making the fire extinguishing device vulnerable to damage in the event of a fire, leading to the failure of the fire extinguishing system and the inability to achieve emergency fire extinguishing protection.

[0041] The outer door 101, inner door 102 and sliding partition 103 are all made of flame-retardant insulating board material.

[0042] In this embodiment, the outer door 101, the inner door 102, and the sliding partition 103 are all made of high-density fiberglass flame-retardant insulation board, which has excellent insulation performance, can effectively block leakage current conduction, and also has good mechanical strength, flame retardancy and high temperature resistance.

[0043] Example 2: Based on Example 1, such as Figure 1 , Figure 8 and Figure 9 As shown, it also includes a sliding rod 201 and a second spring 202; five sliding rods 201 are fixedly connected to the rear side of each DIN rail 2; each sliding rod 201 passes through the corresponding fixing frame 108; and a second spring 202 is fixedly connected between each sliding rod 201 and the fixing frame 108.

[0044] It also includes a locking block 203; each fixing bracket 108 has two left and right symmetrical locking blocks 203 slidably connected; each locking block 203 is provided with a locking slot 20301; each locking slot 20301 faces the corresponding DIN rail 2.

[0045] Working principle of Example 2: The DIN rail 2 achieves sliding engagement with the fixing frame 108 via the sliding rod 201 and the second spring 202; when the operator presses the sliding partition 103 backward, causing the rubber frame 104 to come into contact with the edge of the electrical component, the electrical component is subjected to axial pressure, which drives the second spring 202 to stretch and causes the sliding rod 201 to slide backward synchronously; based on this elastic floating structure, even if the operator adjusts the fixing frame 108 back and forth to calibrate the position, there may still be a 1-2m positional deviation at the front end of each electrical component, which can adaptively compensate for dimensional errors to ensure that the rubber frame 104 and the edge of the electrical component remain in close contact; this structure reduces the installation alignment accuracy requirements of the electrical components and effectively simplifies the assembly process; during the operation of the distribution cabinet, The vibrations generated during the operation of electrical components can be buffered and absorbed by the elastic component composed of sliding rod 201 and second spring 202, which greatly reduces the transmission range of vibration and reduces the adverse effects of vibration on the wiring terminals and assembly connection structure of electrical components, thereby improving the overall operational stability and service life of the equipment. In the initial state, the slots 20301 of each locking block 203 are engaged with the outer side of the corresponding DIN rail 2, and the locking block 203 is used to position and lock the DIN rail 2 to prevent the rail from shifting or deviating, providing reliable support for the installation of electrical components. After the electrical components are assembled, the locking block 203 is slid away from the DIN rail 2 to release its limiting constraint on the DIN rail 2, so that the DIN rail 2 can restore its axial floating ability.

[0046] It also includes warning signs 205; several warning signs 205 are fixed inside the cabinet 1.

[0047] In this embodiment, the warning sign 205 is marked with warning signs such as "Electrical Danger" and "Prohibition of Unauthorized Operation," which can provide continuous visual reminders to operators, effectively avoid misoperation and accidental contact, and further improve the safety level of equipment operation and maintenance.

[0048] It also includes an alarm light 206; an alarm light 206 is installed on cabinet 1.

[0049] In this embodiment, the alarm light 206 is installed in a conspicuous position on the outside of the cabinet 1. The alarm light 206 is electrically connected to the smoke sensor inside the cabinet. When the smoke sensor detects abnormal faults such as short circuit, overload, leakage, and fire inside the cabinet 1, the control system can trigger the alarm light 206 to light up and flash synchronously, realizing a visual and audible fault prompt, which makes it easy for staff to discover equipment abnormalities and deal with them in a timely manner.

[0050] The technical principles of the embodiments of the present invention have been described above with reference to specific examples. These descriptions are merely for explaining the principles of the embodiments of the present invention and should not be construed as limiting the scope of protection of the embodiments of the present invention in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the embodiments of the present invention.

Claims

1. A portable, adjustable double-door electrical distribution box, comprising a cabinet (1); characterized in that: It also includes an outer door (101) connected to the cabinet (1); an inner door (102) installed inside the cabinet (1); a sliding partition (103) slidably connected to the inner door (102); a number of through slots (10301) opened on the sliding partition (103); a number of first springs (105) fixed between the sliding partition (103) and the inner door (102); an electromagnet (106) fixedly connected to the inner door (102); the electromagnet (106) is in contact with the sliding partition (103); an installation assembly for installing electrical components is connected inside the cabinet (1); a number of thermal aerosol fire extinguishing devices (204) are fixedly connected to the outer door (101); each thermal aerosol fire extinguishing device (204) is aligned with the corresponding through slot (10301); a smoke sensor is installed inside the cabinet (1).

2. The portable adjustable double-door distribution box according to claim 1, characterized in that: The mounting components include DIN rails (2) and slide rails (107), mounting brackets (108) and clamps (109) connected inside the cabinet (1); several left-right symmetrical slide rails (107) are fixed inside the cabinet (1); each pair of corresponding slide rails (107) is slidably connected to the mounting bracket (108) by a slider, and each through slot (10301) is aligned with the corresponding mounting bracket (108); each slide rail (107) is slidably connected to the clamp (109); each clamp (109) is fixedly connected to the corresponding mounting bracket (108); each mounting bracket (108) is connected to the DIN rail (2).

3. A portable, adjustable double-door distribution box according to claim 2, characterized in that: Each DIN rail (2) is marked with a line (2001).

4. A portable adjustable double-door distribution box according to claim 1, characterized in that: It also includes a rubber frame (104) connected to the sliding partition (103).

5. A portable adjustable double-door distribution box according to claim 2, characterized in that: The cabinet (1) has a detachable frame (1001) on the front side; the outer door (101), inner door (102), sliding partition (103) and their connecting parts are all installed on the detachable frame (1001).

6. A portable adjustable double-door distribution box according to any one of claims 1-5, characterized in that: The outer door (101), inner door (102) and sliding partition (103) are all made of flame-retardant insulating board material.

7. A portable adjustable double-door distribution box according to claim 3, characterized in that: It also includes a sliding rod (201) connected to the DIN rail (2); each sliding rod (201) passes through the corresponding fixing frame (108); and each sliding rod (201) is fixed to the fixing frame (108) with a second spring (202).

8. A portable adjustable double-door distribution box according to claim 7, characterized in that: It also includes a locking block (203) connected to the mounting bracket (108); each locking block (203) is provided with a slot (20301); each slot (20301) faces the corresponding DIN rail (2).

9. A portable, adjustable double-door distribution box according to claim 5, characterized in that: It also includes warning signs (205); several warning signs (205) are fixed inside the cabinet (1).

10. A portable adjustable double-door distribution box according to claim 9, characterized in that: It also includes an alarm light (206); an alarm light (206) is installed on the cabinet (1).

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