A wall-mounted electrical appliance control cabinet

Abstract

The utility model discloses a wall -hanging electric appliance control cabinet, including wall -hanging cabinet body and the cabinet door hinged at its opening, one side inner wall of wall -hanging cabinet body is detachably fixedly connected with the plastic shell, the bottom fixedly connected with the preposition main power supply wiring terminal of plastic shell, one side inner wall fixedly connected with fixed wiring contact point of plastic shell. In the utility model, through the slide of the link assembly driven by the cabinet door forced control movable rod, thereby directly, the main power supply contact point of synchronous on-off by first, second metal piece constitutes, adopts pure mechanical linkage structure to ensure the absolute synchronization of door opening and power failure, eliminates the risk of live maintenance from the source, simultaneously, its modular contact mechanism is independent of the original electrical layout in the cabinet, solves the applicability narrow problem of prior art because of the dependence of specific switch, and overcomes the security hidden danger that ordinary microswitch contact point can be fused and welded and fail by virtue of mechanical forced breaking.

Description

Technical Field

[0001] This utility model relates to the field of control cabinet technology, and in particular to a wall-mounted electrical control cabinet. Background Technology

[0002] Wall-mounted electrical control cabinets are critical infrastructure in industrial automation systems, widely used to control terminal electrical equipment such as motors, pumps, fans, lighting, and various production machinery. Their core function is to house and integrate components such as circuit breakers, contactors, frequency converters, programmable logic controllers (PLCs), and signal terminals. Through centralized wiring and management, they achieve precise control over specific electrical appliances or equipment groups, including starting, stopping, speed regulation, protection, and signal feedback. Unlike distribution cabinets, which are primarily used for power distribution, electrical control cabinets focus more on logic control and function execution. These cabinets are wall-mounted, offering advantages such as high space utilization, compact layout, and convenient local control of field equipment. To ensure the safety of operators and maintenance personnel and the stable operation of the precision control components within the cabinet, its protective performance and door safety interlocking mechanism are crucial.

[0003] Currently, known wall-mounted electrical control cabinets have several shortcomings in safety interlocking that urgently need to be addressed. First, mechanical linkage interlocking schemes (i.e., directly driving the disconnect switch inside the cabinet via the door handle) have limited applicability. This scheme requires the installation of a disconnect switch or load switch with a physical operating shaft inside the cabinet; however, most electrical control circuits centered on contactors and soft starters lack such components, rendering this excellent solution unusable. Second, while electromechanical interlocking using ordinary microswitches to detect door position solves the versatility problem, its contact action relies on spring reset and lacks "forced disconnection" capability. When the contacts weld due to overload or short circuit, the switch will permanently stick in the closed state, failing to effectively cut off the control circuit when the door is opened, causing the interlocking function to fail and posing a serious safety hazard.

[0004] Therefore, we propose a wall-mounted electrical control cabinet. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a wall-mounted electrical control cabinet.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a wall-mounted electrical control cabinet, comprising a wall-mounted cabinet body and a cabinet door hinged to its opening, wherein a plastic shell is detachably and fixedly connected to one side inner wall of the wall-mounted cabinet body, a front-mounted main power supply terminal is fixedly connected to the bottom of the plastic shell, and a fixed wiring contact is fixedly connected to one side inner wall of the plastic shell.

[0007] A movable rod extending into the interior is provided on one side of the outer surface of the plastic housing, and the movable rod is slidably connected to the plastic housing. Multiple elastic components are installed on the movable rod on the side of the fixed wiring contact. The movable ends of the multiple elastic components are fixedly connected to a second metal block, and the second metal block matches the fixed wiring contact.

[0008] The bottom of the plastic housing is fixedly connected to a rear main power supply terminal.

[0009] The movable rod and the cabinet door are fixedly connected by a connecting rod assembly.

[0010] Furthermore, the fixed wiring contact includes a ceramic base, which is fixedly connected inside the plastic housing. The outer surface of the ceramic base is fixedly connected to a plurality of first metal blocks on one side of the movable rod, and the first metal blocks match the second metal blocks, providing excellent insulation support through the ceramic base.

[0011] Furthermore, all of the first metal blocks are electrically connected to the front main power supply terminals, and the number of the first metal blocks is consistent with the number of interfaces of the front main power supply terminals. This configuration realizes the standardized allocation of power input and ensures that each phase line is independently conductive.

[0012] Furthermore, each of the aforementioned elastic components includes a mounting groove, which is formed on one outer wall of the movable rod. A spring is fixedly connected to one inner wall of the mounting groove, and a T-shaped ceramic block is fixedly connected to one end of the spring. The T-shaped ceramic block passes through the mounting groove and is slidably connected to the mounting groove. The T-shaped ceramic block is also fixedly connected to the second metal block. The elastic structure ensures tight contact at the contacts while effectively preventing arc short circuits by utilizing the insulating properties of the T-shaped ceramic block.

[0013] Furthermore, multiple second metal blocks are electrically connected to the rear main power supply terminals, and the number of second metal blocks is consistent with the number of interfaces of the rear main power supply terminals. This design realizes synchronous control of power output, ensuring that each circuit is switched on and off simultaneously.

[0014] Furthermore, the linkage assembly includes a first connecting block, which is fixedly connected to the movable rod. The top and bottom of the first connecting block are rotatably connected to two connecting rod bodies. The two connecting rod bodies are rotatably connected to a second connecting block, which is fixedly connected to the cabinet door. The multi-link mechanism converts the rotational motion of the cabinet door into the linear motion of the movable rod, resulting in high transmission efficiency and smooth and reliable movement.

[0015] Furthermore, the top and bottom of the movable rod are fixedly connected to limit blocks on one side of the elastic component. The limit blocks effectively limit the travel range of the movable rod and prevent structural damage caused by excessive movement.

[0016] The beneficial effects of this utility model are:

[0017] In use, this utility model forcibly controls the sliding of the movable rod through a linkage assembly driven by the cabinet door, thereby directly and synchronously switching on and off the main power contact composed of the first and second metal blocks. The purely mechanical linkage structure ensures absolute synchronization between opening the door and cutting off the power, eliminating the risk of live maintenance from the root. At the same time, its modular contact mechanism is independent of the original electrical layout inside the cabinet, solving the problem of narrow applicability caused by the reliance on specific switches in existing technologies. Furthermore, the mechanical forced disconnection overcomes the safety hazard of possible welding failure of ordinary micro switch contacts, significantly improving versatility and safety. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments 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 these drawings without creative effort.

[0019] Figure 1 This is a first-person perspective three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall second-view three-dimensional structure of this utility model;

[0021] Figure 3 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0022] Figure 4 This is a cross-sectional view of the plastic shell structure of this utility model;

[0023] Figure 5 For the present utility model Figure 4 Enlarged view of point B in the middle.

[0024] The attached figures are labeled as follows:

[0025] 1. Wall-mounted cabinet; 2. Connecting rod body; 3. Cabinet door; 4. Rear main power terminal; 5. Plastic housing; 6. Second connecting block; 7. Front main power terminal; 8. Ceramic base; 9. First metal block; 10. Movable rod; 11. First connecting block; 12. Second metal block; 13. T-shaped ceramic block; 14. Limiting block; 15. Spring; 16. Mounting slot. Detailed Implementation

[0026] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1-5 As shown, a wall-mounted electrical control cabinet is disclosed, comprising a wall-mounted cabinet body 1 and a cabinet door 3 hinged to its opening. A plastic shell 5 is detachably fixed to one inner wall of the wall-mounted cabinet body 1. The plastic shell 5 is made of flame-retardant material and is detachably connected to the side wall of the wall-mounted cabinet body 1 by four stainless steel screws. A front-mounted main power terminal 7 is fixedly connected to the bottom of the plastic shell 5. A fixed wiring contact is fixedly connected to one inner wall of the plastic shell 5. The fixed wiring contact includes a ceramic base 8, which is fixedly connected inside the plastic shell 5. A plurality of first metal blocks 9 are fixedly connected to the outer surface of the ceramic base 8 on one side of the movable rod 10. The plurality of first metal blocks 9 are electrically connected to the front-mounted main power terminal 7, and the number of first metal blocks 9 is consistent with the number of interfaces of the front-mounted main power terminal 7. The ceramic base 8 is made of alumina ceramic, and the first metal blocks 9 are made of T2 copper plated with silver and are metallurgically bonded to the ceramic base 8 by silver-copper brazing.

[0028] A movable rod 10 extending into the interior is provided on one side of the outer surface of the plastic housing 5. The movable rod 10 is also made of flame-retardant material and has insulation properties. The movable rod 10 is slidably connected to the plastic housing 5. Multiple elastic components are installed on the movable rod 10 on the side of the fixed wiring contact. The movable ends of the multiple elastic components are all fixedly connected to the second metal block 12. The multiple elastic components include a mounting groove 16, which is opened on one side of the outer wall of the movable rod 10. A spring 15 is fixedly connected to one side of the inner wall of the mounting groove 16. The spring 15 is made of piano wire 65Mn material to provide stable contact pressure. A T-shaped ceramic block 13 is fixedly connected to one end of the spring 15. The T-shaped ceramic block 13 is set through the mounting groove 16 and is slidably connected to the mounting groove 16. The T-shaped ceramic block 13 is fixedly connected to the second metal block 12, and the first metal block 9 matches the second metal block 12. The T-shaped ceramic block 13 is made of silicon nitride material, which ensures both insulation strength and sufficient mechanical strength.

[0029] Limiting blocks 14 are fixedly connected to the top and bottom of the movable rod 10 on one side of the elastic component.

[0030] The bottom of the plastic housing 5 is fixedly connected to the rear main power terminal 4. Multiple second metal blocks 12 are electrically connected to the rear main power terminal 4, and the number of second metal blocks 12 is the same as the number of interfaces of the rear main power terminal 4. The second metal blocks 12 and the rear main power terminal 4 are connected by copper busbars.

[0031] The movable rod 10 and the cabinet door 3 are fixedly connected by a connecting rod assembly. The connecting rod assembly includes a first connecting block 11, and the first connecting block 11 is fixedly connected to the movable rod 10. The top and bottom of the first connecting block 11 are rotatably connected to two connecting rod bodies 2. The two connecting rod bodies 2 are rotatably connected to a second connecting block 6, and the second connecting block 6 is fixedly connected to the cabinet door 3.

[0032] Working principle: When the user closes the cabinet door 3, the movement of the cabinet door 3 is transmitted through the linkage assembly (specifically including the second connecting block 6 fixed to the cabinet door 3, the linkage body 2, and the first connecting block 11 fixed to the movable rod 10). The linkage assembly pushes the movable rod 10 to slide into the plastic housing 5. The movement of the movable rod 10 drives multiple second metal blocks 12 installed at its front end to move forward through the elastic component until they come into contact with the first metal block 9 fixed on the ceramic base 8. At the moment of contact, the elastic component begins to function, the spring 15 is compressed, and the reaction force generated is continuously applied to the second metal block 12 through the T-shaped ceramic block 13, ensuring the contact pressure between the second metal block 12 and the first metal block 9, making the electrical connection tighter and more reliable, and effectively reducing the contact resistance.

[0033] The external power cord is connected to the front main power terminal 7, and then connected to the first metal block 9 through the conductive component. After flowing through the second metal block 12, it is connected to the rear main power terminal 4 through the internal wire, and finally supplies power to the electrical equipment in the wall-mounted cabinet 1.

[0034] When the user opens the cabinet door 3, the opening action of the cabinet door 3 is the sole power source driving the movement of the entire system. The rotation of the cabinet door 3 immediately pulls the movable rod 10 through the second connecting block 6, the connecting rod body 2, and the first connecting block 11, forcing the movable rod 10 to slide out of the plastic housing 5. The resetting movement of the movable rod 10 directly and synchronously drives all the second metal blocks 12 on it to physically separate from the corresponding first metal blocks 9. This separation action is forcibly driven by the mechanical structure, quickly and reliably cutting off the main power supply circuit.

[0035] The movement of the movable lever 10 is entirely controlled by the cabinet door 3 through the linkage assembly. Its on / off state is strictly bound to the position of the cabinet door 3, requiring no power intervention and thus having extremely high reliability.

[0036] The resilient component functions only when the contacts are closed; the pressure provided by its spring 15 is used to optimize electrical connection performance, rather than to drive component movement. During disconnection, the separation of the contacts is primarily accomplished by the mechanical pulling of the linkage assembly and the movable rod 10.

[0037] The movable rod 10 acts as a rigid carrier, ensuring that all phase wire contacts disconnect synchronously. The plastic housing 5, ceramic base 8, and T-shaped ceramic block 13 together form a complete insulation system, ensuring operational safety.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A wall-mounted electrical control cabinet, comprising a wall-mounted cabinet body (1) and a cabinet door (3) hinged to its opening, characterized in that: A plastic housing (5) is detachably fixed to one side of the inner wall of the wall-mounted cabinet (1). A front-mounted main power supply terminal (7) is fixedly connected to the bottom of the plastic housing (5). A fixed wiring contact is fixedly connected to one side of the inner wall of the plastic housing (5). The outer surface of the plastic housing (5) is provided with a movable rod (10) that extends into the interior, and the movable rod (10) is slidably connected to the plastic housing (5). The movable rod (10) is provided with multiple elastic components on the side of the fixed wiring contact. The movable ends of the multiple elastic components are fixedly connected to a second metal block (12), and the second metal block (12) matches the fixed wiring contact. The bottom of the plastic housing (5) is fixedly connected to the rear main power supply terminal (4); The movable rod (10) and the cabinet door (3) are fixedly connected by a connecting rod assembly.

2. The wall-mounted electrical control cabinet according to claim 1, characterized in that: The fixed wiring contact includes a ceramic base (8), which is fixedly connected inside the plastic housing (5). The outer surface of the ceramic base (8) is fixedly connected to a plurality of first metal blocks (9) on one side of the movable rod (10), and the first metal blocks (9) are matched with the second metal blocks (12).

3. A wall-mounted electrical control cabinet according to claim 2, characterized in that: Multiple first metal blocks (9) are electrically connected to the front main power supply terminal (7), and the number of first metal blocks (9) is consistent with the number of interfaces of the front main power supply terminal (7).

4. A wall-mounted electrical control cabinet according to claim 1, characterized in that: Each of the elastic components includes a mounting groove (16), and the mounting groove (16) is opened on one side of the outer wall of the movable rod (10). A spring (15) is fixedly connected to one side of the inner wall of the mounting groove (16). A T-shaped ceramic block (13) is fixedly connected to one end of the spring (15). The T-shaped ceramic block (13) passes through the mounting groove (16) and is slidably connected to the mounting groove (16). The T-shaped ceramic block (13) is fixedly connected to the second metal block (12).

5. A wall-mounted electrical control cabinet according to claim 1, characterized in that: Multiple second metal blocks (12) are electrically connected to the rear main power supply terminal (4), and the number of second metal blocks (12) is the same as the number of interfaces of the rear main power supply terminal (4).

6. A wall-mounted electrical control cabinet according to claim 1, characterized in that: The linkage assembly includes a first connecting block (11), and the first connecting block (11) is fixedly connected to the movable rod (10). The top and bottom of the first connecting block (11) are rotatably connected to two connecting rod bodies (2). The two connecting rod bodies (2) are rotatably connected to a second connecting block (6), and the second connecting block (6) is fixedly connected to the cabinet door (3).

7. A wall-mounted electrical control cabinet according to claim 1, characterized in that: The top and bottom of the movable rod (10) are both fixedly connected to limit blocks (14) on one side of the elastic component.

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