Power distribution cabinet
By using flexible components to drive the secondary plug bracket and the drawer to float in the distribution cabinet, the problems of pin deformation and poor contact caused by rigid docking structure are solved, achieving arc-free switching and extended plug-in life, thus improving system safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU DEYUAN ELECTRIC
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-21
AI Technical Summary
In existing distribution cabinets, rigid connection structures cause uneven stress on the pins, resulting in permanent deformation, poor contact, and malfunctions. In particular, there is a risk of arcing and explosion in high-current scenarios.
The secondary plug bracket is driven by an elastic component and floats to connect with the drawer body. Combined with the split plug-in mechanism, it ensures precise alignment of the secondary plug/socket, achieves arc-free connection and disconnection of the main circuit, and eliminates pin collision damage through high and low voltage plug-in timing control.
This achieves extended insertion and removal life, eliminates pin collision damage, ensures that the control signal conducts before the main circuit, avoids the risk of arc explosion, and improves system safety and reliability.
Smart Images
Figure CN224537649U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power distribution technology, specifically to distribution cabinets. Background Technology
[0002] As the core equipment for power distribution, the drawer-type modules of the distribution cabinet need to be frequently pulled out and put back in order to maintain circuit continuity. The reliability of the circuit connection between the drawer and the cabinet directly affects the system safety, especially in high-current scenarios where misalignment of the connections may cause an electric arc explosion.
[0003] Existing technology uses a rigid connection structure, meaning that the primary plug (main circuit) and secondary plug (control circuit) collide and plug in synchronously when the drawer is pushed in. This leads to uneven force on the pins, causing permanent deformation and malfunctions. Furthermore, there is no deviation compensation mechanism, which can result in poor contact and excessive temperature rise when the cabinet installation tolerance is large. Utility Model Content
[0004] This application provides a power distribution cabinet to solve the problems of poor contact and failure caused by rigid docking structures.
[0005] In a first aspect, this application provides a power distribution cabinet, comprising:
[0006] The cabinet has an internal cavity, including a first end and a second end that are opposite to each other.
[0007] The drawer body is disposed at the second end of the inner cavity and is slidably disposed in the inner cavity along the direction from the first end to the second end of the inner cavity;
[0008] A circuit distribution adapter is disposed at the first end of the inner cavity, and the circuit distribution adapter includes a secondary socket bracket;
[0009] A secondary plug bracket is disposed at the end of the drawer body facing the circuit distribution adapter;
[0010] An elastic component is disposed between the secondary plug bracket and the drawer body, and the elastic component has a tendency to drive the secondary plug bracket away from the drawer body;
[0011] The secondary socket bracket and the secondary plug bracket are compatible.
[0012] Beneficial effects: The flexible component drives the secondary plug bracket to float and connect with the drawer body, so that the secondary plug / socket is precisely aligned and then engages the plug once, eliminating pin collision damage. The split design of the secondary plug-in mechanism allows the control circuit to be turned on / off in advance, realizing arc-free switching of the main circuit and extending the plug-in life.
[0013] In one optional embodiment, the drawer body has a first plate and a second plate at one end facing the circuit distribution adapter, the first plate and the second plate are spaced apart, the secondary plug bracket is connected to the second plate through the elastic component, the first plate has a fixing hole, a primary moving plug is disposed in the fixing hole, the circuit distribution adapter includes a primary stationary plug, and the primary stationary plug is adapted to the primary moving plug.
[0014] Beneficial effects: The first board fixes the primary plug, and the second board floats and supports the secondary plug bracket through the elastic component, forming a high and low voltage plug-in timing control. Specifically, the contact stroke of the secondary plug is longer than that of the primary plug, ensuring that the control signal is turned on before the main circuit, and completely eliminating inrush current impact.
[0015] In one alternative implementation, it further includes:
[0016] Secondary plug body;
[0017] The secondary plug bracket includes a first mounting plate with a first mounting hole. A plurality of first mounting members are provided on the side of the first mounting plate facing the secondary socket bracket. The plurality of first mounting members are spaced apart circumferentially along the first mounting hole. The first mounting members are connected to the secondary plug body by a first fastener, and the secondary plug body is at least partially located within the first mounting hole.
[0018] Beneficial effects: The circumferential distribution of the first mounting component makes the radial force on the secondary plug body uniform, and the axial displacement is constrained by the first mounting hole, reducing the offset of the pin. The detachable design of the first fastener supports quick replacement of faulty plugs and shortens maintenance time.
[0019] In one alternative implementation, it further includes:
[0020] Secondary socket body;
[0021] The secondary socket bracket includes a second mounting plate with a second mounting hole. A plurality of second mounting members are provided on the side of the second mounting plate facing the secondary plug bracket. The plurality of second mounting members are spaced apart circumferentially along the second mounting hole. The second mounting members are connected to the secondary socket body by a second fastener, and the secondary socket body is at least partially located within the second mounting hole.
[0022] The distance between the secondary plug body and the secondary socket body is less than the distance between the primary moving plug and the primary stationary plug.
[0023] Beneficial effect: The distance between the secondary plug body and the socket body is less than the distance between the primary plugs, which can realize the secondary circuit being connected first and then disconnected.
[0024] In one alternative implementation, it further includes:
[0025] A guide post and a guide cylinder are provided, one of which is disposed on the first mounting plate and the other is disposed on the second mounting plate, and the guide post and the guide cylinder are disposed correspondingly. Along the axial direction of the guide post, the outer wall of the guide post and the inner wall of the guide cylinder are slidably engaged.
[0026] Beneficial effects: The sliding fit between the guide post and the guide cylinder can correct angular deviations in the initial stage of insertion, preventing the pin from shearing and breaking.
[0027] In one alternative implementation, the resilient component includes:
[0028] The positioning component includes a limiting part and a connecting part connected in sequence. A connecting hole is provided on the first mounting plate. The connecting part passes through the connecting hole and is connected to the second plate. The limiting part is provided on the side of the first mounting plate facing away from the second plate. The first mounting plate can slide along the axial direction of the positioning component. The diameter of the limiting part is larger than the diameter of the connecting hole.
[0029] An elastic element is sleeved on the positioning element, and the two ends of the elastic element abut against the first mounting plate and the second plate respectively, and have the tendency to drive the first mounting plate away from the second plate.
[0030] Beneficial effects: The elastic element pushes the first mounting plate away from the second plate, providing automatic separation assistance when the drawer is pulled out; the diameter of the limiting part is larger than that of the connecting hole to form a mechanical stop, preventing over-compression and damage to the elastic element; the axial guidance of the positioning part can reduce the straightness error of the floating trajectory.
[0031] In one optional embodiment, a plurality of connecting holes are provided, and the plurality of connecting holes are spaced apart along the circumference of the first mounting plate. A plurality of positioning members are provided, and the plurality of positioning members and the plurality of connecting holes are respectively provided in a one-to-one correspondence.
[0032] Beneficial effects: The four positioning components are evenly distributed around the circumference, which improves the resistance to off-center loads of the secondary plug bracket and prevents jamming.
[0033] In one optional embodiment, the second plate is provided with a connecting hole, which corresponds to the first mounting hole, and the secondary plug body can extend into the connecting hole along the direction from the first end to the second end of the inner cavity.
[0034] Beneficial effect: The connecting hole allows the cable of the secondary plug body to pass through, enabling it to connect with the electrical components inside the drawer body.
[0035] In one optional embodiment, a pair of guide plates are provided on the second plate body, the pair of guide plates being located on opposite sides of the connecting hole, and the guide plates slidingly engaging with the secondary plug body.
[0036] Beneficial effect: A pair of guide plates slide in contact with both sides of the secondary plug body, which can correct the horizontal wobble when the drawer is pushed in.
[0037] In one alternative implementation, the circuit distribution adapter further includes:
[0038] A guide rod is provided, and a guide hole is provided on the first plate, which is adapted to the guide rod. Beneficial effect: The guide rod and the guide hole of the first plate have a clearance fit, providing precise alignment at the end of drawer closure and improving the insertion accuracy of primary plug-in components. Attached Figure Description
[0039] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0040] Figure 1 This is a schematic diagram of the drawer body in an embodiment of this application;
[0041] Figure 2 This is a schematic diagram of the cabinet structure in an embodiment of this application;
[0042] Figure 3 This is a schematic diagram of the structure of the secondary socket body in an embodiment of this application;
[0043] Figure 4 This is a schematic diagram of the structure of the secondary socket bracket in the embodiment of this application;
[0044] Figure 5 This is a side view of the secondary socket bracket in an embodiment of this application;
[0045] Figure 6 This is a schematic diagram of the secondary plug bracket in an embodiment of this application;
[0046] Figure 7 This is a side view of the secondary plug bracket in an embodiment of this application;
[0047] Figure 8 This is a schematic diagram of the slide rail structure in an embodiment of this application.
[0048] Explanation of reference numerals in the attached figures:
[0049] 1. Cabinet body; 2. Drawer body; 3. Circuit distribution adapter; 301. Secondary socket bracket; 3011. Second mounting plate; 3012. Second mounting hole; 3013. Second mounting component; 302. Primary static plug; 303. Guide rod; 4. Secondary plug bracket; 401. First mounting plate; 402. First mounting hole; 403. First mounting component; 404. Connection hole; 5. First plate; 501. Fixing hole; 502. Guide hole; 6. Second plate; 601. Connecting hole; 602. Guide plate; 7. Primary moving plug; 8. Secondary socket body; 9. Guide post; 10. Guide cylinder; 11. Sliding component; 12. Slide rail. Detailed Implementation
[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0051] The following is combined Figures 1 to 8 This describes an embodiment of the present application.
[0052] According to an embodiment of this application, in one aspect, a power distribution cabinet is provided, including a cabinet body 1, a drawer body 2, a circuit distribution adapter 3, a secondary plug bracket 4, and an elastic component. The cabinet body 1 has an inner cavity, including a first end and a second end opposite to each other. The drawer body 2 is disposed at the second end of the inner cavity and is slidably disposed within the inner cavity along the direction from the first end to the second end. The circuit distribution adapter 3 is disposed at the first end of the inner cavity and includes a secondary socket bracket 301. The secondary plug bracket 4 is disposed at the end of the drawer body 2 facing the circuit distribution adapter 3. The elastic component is disposed between the secondary plug bracket 4 and the drawer body 2, and the elastic component has a tendency to drive the secondary plug bracket 4 away from the drawer body 2. The secondary socket bracket 301 and the secondary plug bracket 4 are adapted to each other.
[0053] Existing distribution adapters on the market are available in two configurations: four drawers per layer and two drawers per layer. The four-drawer configuration is limited by space constraints, restricting the installation of more components and limiting its large-scale application. The two-drawer configuration offers more space and can meet most usage scenarios, but the maximum number of circuits per cabinet is 22. For low-current applications with a larger number of circuits, its economic advantages are not advantageous. Furthermore, this configuration only allows a maximum of 32 secondary circuits per drawer, making it unsuitable for applications with complex control functions. This application proposes a three-drawer configuration per layer, which satisfies the installation space requirements for low-current applications while providing more circuits. Each cabinet can accommodate up to 33 primary circuits, and each drawer can support up to 40 secondary circuits. The corresponding circuit distribution adapter 3's 1 / 3 circuit assembly solves the technical problem of the 1 / 4 portion having insufficient space for installation, while the 1 / 2 portion, though large enough, cannot accommodate more circuits.
[0054] It should be noted that the 1 / 3 circuit assembly refers to a single drawer occupying 1 / 3 of the width of the cabinet. Its inlet wiring components adopt an ABCN four-phase layout, with the primary static plug 302 and the secondary socket bracket 301 arranged horizontally side by side. The space utilization rate is improved compared to the 1 / 4 assembly, and the circuit capacity is increased compared to the 1 / 2 assembly.
[0055] Understandably, the flexible component design allows the secondary plug / socket to engage first when the drawer body 2 is pushed to a certain distance from the closed position; the main circuit plug closes within the remaining travel, enabling the control signal to be turned on first.
[0056] In this embodiment, the elastic component drives the secondary plug bracket 4 to float and connect with the drawer body 2, so that the secondary plug / socket is precisely aligned and then engages the plug once, eliminating pin collision damage. The split design of the secondary plug-in mechanism allows the control circuit to be turned on / off in advance, realizing arc-free switching of the main circuit and extending the plug-in life.
[0057] In one embodiment, the drawer body 2 is further provided with a slider 11 and a slide rail 12. The slider 11 is disposed on two opposite sides of the drawer body 2, and the slide rail 12 is disposed on the inner wall of the cabinet 1. The two slide together to guide the drawer body 2.
[0058] In one embodiment, the drawer body 2 is provided with a first plate 5 and a second plate 6 at one end facing the circuit distribution adapter 3. The first plate 5 and the second plate 6 are spaced apart. The secondary plug bracket 4 is connected to the second plate 6 through an elastic component. The first plate 5 is provided with a fixing hole 501. A primary moving plug 7 is provided in the fixing hole 501. The circuit distribution adapter 3 includes a primary stationary plug 302, which is adapted to the primary moving plug 7.
[0059] Understandably, the first plate 5 provides rigid support for the primary plug-in, while the second plate 6 can reduce the load on the elastic component by opening weight-reducing holes.
[0060] In this embodiment, the first plate 5 fixes the primary plug 7, and the second plate 6 floats to support the secondary plug bracket 4 through an elastic component, forming a high and low voltage plug-in timing control. Specifically, the contact stroke of the secondary plug is longer than that of the primary plug, ensuring that the control signal is turned on before the main circuit, thus completely eliminating inrush current impact.
[0061] In one embodiment, a secondary plug body is also included. The secondary plug bracket 4 includes a first mounting plate 401 with a first mounting hole 402. A plurality of first mounting members 403 are provided on the side of the first mounting plate 401 facing the secondary socket bracket 301. The plurality of first mounting members 403 are spaced apart circumferentially along the first mounting hole 402. The first mounting members 403 are connected to the secondary plug body by a first fastener, and the secondary plug body is at least partially located within the first mounting hole 402.
[0062] In this embodiment, the circumferential distribution of the first mounting member 403 makes the radial force on the secondary plug body uniform, and the first mounting hole 402 constrains the axial displacement, reducing the offset of the pin. The detachable design of the first fastener supports quick replacement of faulty plugs and shortens maintenance time.
[0063] In one embodiment, the system further includes a secondary socket body 8. The secondary socket bracket 301 includes a second mounting plate 3011 with a second mounting hole 3012. A plurality of second mounting members 3013 are disposed on the side of the second mounting plate 3011 facing the secondary plug bracket 4. The plurality of second mounting members 3013 are spaced circumferentially along the second mounting hole 3012. The second mounting members 3013 are connected to the secondary socket body 8 via second fasteners, and the secondary socket body 8 is at least partially located within the second mounting hole 3012. The distance between the secondary plug body and the secondary socket body 8 is less than the distance between the primary moving plug 7 and the primary stationary plug 302.
[0064] In this embodiment, the distance between the secondary plug body and the socket body is less than the distance between the primary plugs, which enables the secondary circuit to be connected first and then disconnected.
[0065] In one embodiment, the system further includes a guide post 9 and a guide cylinder 10, one of which is disposed on a first mounting plate 401 and the other is disposed on a second mounting plate 3011. The guide post 9 and the guide cylinder 10 are disposed correspondingly, and the outer wall of the guide post 9 slides in cooperation with the inner wall of the guide cylinder 10 along the axial direction of the guide post 9.
[0066] In this embodiment, the sliding fit between the guide post 9 and the guide cylinder 10 can correct the angle deviation in the initial stage of insertion, thus avoiding the shearing and breakage of the pin.
[0067] In one embodiment, the elastic component includes an elastic element and a positioning element. The positioning element includes a limiting portion and a connecting portion connected in sequence. A connecting hole 404 is provided on the first mounting plate 401, and the connecting portion passes through the connecting hole 404 and is connected to the second plate 6. The limiting portion is provided on the side of the first mounting plate 401 facing away from the second plate 6. The first mounting plate 401 can slide along the axial direction of the positioning element, and the diameter of the limiting portion is larger than the diameter of the connecting hole 404. The elastic element is sleeved on the positioning element, and its two ends abut against the first mounting plate 401 and the second plate 6 respectively, having a tendency to drive the first mounting plate 401 away from the second plate 6.
[0068] It should be noted that four positioning components can be set and distributed in a 90° circumferential direction to enhance the ability of the secondary plug bracket 4 to withstand overturning moment.
[0069] In this embodiment, the elastic element pushes the first mounting plate 401 away from the second plate 6, providing automatic separation assistance when the drawer is pulled out; the diameter of the limiting part is larger than that of the connecting hole 404 to form a mechanical stop, preventing over-compression and damage to the elastic element; the axial guidance of the positioning element can reduce the straightness error of the floating trajectory.
[0070] In one embodiment, multiple connection holes 404 are provided, and the multiple connection holes 404 are spaced apart along the circumference of the first mounting plate 401. Multiple positioning members are provided, and the multiple positioning members and the multiple connection holes 404 are respectively provided in a one-to-one correspondence.
[0071] In this embodiment, the four positioning elements are evenly distributed around the circumference, which improves the resistance to off-center loads of the secondary plug bracket 4 and prevents jamming.
[0072] In one embodiment, the second plate 6 is provided with a connecting hole 601, which corresponds to the first mounting hole 402, and the secondary plug body can extend into the connecting hole 601 along the direction from the first end to the second end of the inner cavity.
[0073] In this embodiment, the connection hole 601 allows the cable of the secondary plug body to pass through, enabling it to connect with the electrical components inside the drawer body 2.
[0074] In one embodiment, a pair of guide plates 602 are provided on the second plate 6. The pair of guide plates 602 are located on two opposite sides of the connecting hole 601, and the guide plates 602 are slidably engaged with the secondary plug body.
[0075] Optionally, the guide plate 602 can be tilted, and both guide plates 602 are tilted outward to facilitate the insertion of the secondary plug body.
[0076] In this embodiment, a pair of guide plates 602 slide in cooperation with both sides of the secondary plug body to correct the horizontal sway when the drawer is pushed in.
[0077] In one embodiment, the circuit distribution adapter 3 further includes a guide rod 303, and a guide hole 502 is provided on the first plate 5, which is adapted to the guide rod 303.
[0078] Optionally, the end of the guide rod 303 can be configured as a tapered structure to increase the fault tolerance.
[0079] In this embodiment, the guide rod 303 is clearance-fitted with the guide hole 502 of the first plate 5 to provide precise alignment at the end of the drawer closure, thereby improving the insertion accuracy of the first plug-in.
[0080] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.
Claims
1. A power distribution cabinet, characterized in that, include: The cabinet (1) has an inner cavity, including a first end and a second end opposite to each other; The drawer body (2) is disposed at the second end of the inner cavity and is slidably disposed in the inner cavity along the direction from the first end to the second end of the inner cavity; A circuit distribution adapter (3) is disposed at the first end of the inner cavity, and the circuit distribution adapter (3) includes a secondary socket bracket (301); A secondary plug bracket (4) is disposed at one end of the drawer body (2) facing the circuit distribution adapter (3); An elastic component is disposed between the secondary plug bracket (4) and the drawer body (2), the elastic component having a tendency to drive the secondary plug bracket (4) away from the drawer body (2); The secondary socket bracket (301) and the secondary plug bracket (4) are compatible.
2. The power distribution cabinet according to claim 1, characterized in that, The drawer body (2) is provided with a first plate (5) and a second plate (6) at one end facing the circuit distribution adapter (3). The first plate (5) and the second plate (6) are spaced apart. The secondary plug bracket (4) is connected to the second plate (6) through the elastic component. The first plate (5) is provided with a fixing hole (501). A primary moving plug (7) is provided in the fixing hole (501). The circuit distribution adapter (3) includes a primary stationary plug (302). The primary stationary plug (302) is adapted to the primary moving plug (7).
3. The power distribution cabinet according to claim 2, characterized in that, Also includes: Secondary plug body; The secondary plug bracket (4) includes a first mounting plate (401) with a first mounting hole (402). The side of the first mounting plate (401) facing the secondary socket bracket (301) is provided with a plurality of first mounting parts (403). The plurality of first mounting parts (403) are arranged circumferentially at intervals along the first mounting hole (402). The first mounting parts (403) are connected to the secondary plug body through a first fastener, and the secondary plug body is at least partially located in the first mounting hole (402).
4. The power distribution cabinet according to claim 3, characterized in that, Also includes: Secondary socket body (8); The secondary socket bracket (301) includes a second mounting plate (3011) and a second mounting hole (3012). A plurality of second mounting members (3013) are provided on the side of the second mounting plate (3011) facing the secondary plug bracket (4). The plurality of second mounting members (3013) are spaced apart circumferentially along the second mounting hole (3012). The second mounting members (3013) are connected to the secondary socket body (8) by a second fastener, and the secondary socket body (8) is at least partially located in the second mounting hole (3012). The distance between the secondary plug body and the secondary socket body (8) is less than the distance between the primary moving plug (7) and the primary stationary plug (302).
5. The power distribution cabinet according to claim 4, characterized in that, Also includes: A guide post (9) and a guide cylinder (10) are provided, one of which is provided on the first mounting plate (401) and the other is provided on the second mounting plate (3011). The guide post (9) and the guide cylinder (10) are provided correspondingly. Along the axial direction of the guide post (9), the outer wall of the guide post (9) and the inner wall of the guide cylinder (10) are in sliding fit.
6. The power distribution cabinet according to claim 3, characterized in that, The elastic component includes: The positioning component includes a limiting part and a connecting part connected in sequence. The first mounting plate (401) is provided with a connecting hole (404). The connecting part passes through the connecting hole (404) and is connected to the second plate body (6). The limiting part is provided on the side of the first mounting plate (401) facing away from the second plate body (6). The first mounting plate (401) can slide along the axial direction of the positioning component. The diameter of the limiting part is larger than the diameter of the connecting hole (404). An elastic element is sleeved on the positioning element. The two ends of the elastic element abut against the first mounting plate (401) and the second plate (6) respectively, and have a tendency to drive the first mounting plate (401) away from the second plate (6).
7. The power distribution cabinet according to claim 6, characterized in that, Multiple connecting holes (404) are provided, and the multiple connecting holes (404) are spaced apart along the circumference of the first mounting plate (401). Multiple positioning members are provided, and the multiple positioning members and the multiple connecting holes (404) are respectively provided in a one-to-one correspondence.
8. The power distribution cabinet according to claim 3, characterized in that, The second plate (6) is provided with a connecting hole (601), which is corresponding to the first mounting hole (402), and the secondary plug body can extend into the connecting hole (601) along the direction from the first end to the second end of the inner cavity.
9. The power distribution cabinet according to claim 8, characterized in that, The second plate (6) is provided with a pair of guide plates (602), which are located on opposite sides of the connecting hole (601) and slide in cooperation with the secondary plug body.
10. The power distribution cabinet according to claim 2, characterized in that, The circuit distribution adapter (3) also includes: The guide rod (303) has a guide hole (502) on the first plate (5), and the guide hole (502) is adapted to the guide rod (303).