A power control black box

Abstract

This utility model discloses a small black box for power control, including a power supply box, a control box, and a control output cable. The power supply box and control box achieve quick connection via a connector and a plug-in part. The plug-in part has a guiding bevel, and the connector has a mating bevel. The bevels engage with the guide block to slide into the socket for locking, allowing for tool-free assembly and effectively solving the problems of cumbersome and easily damaged traditional screw connections. The control box has a receiving groove, and the control output cable is connected to the groove via a limiting seat with a limiting groove. A limiting plate is provided on the inside of the box cover; when closed, it inserts into the limiting groove, thereby restricting the output cable from being pulled outwards, enhancing the reliability and tensile strength of the cable fixation. This utility model offers convenient assembly and disassembly, stable control output cable connection, and significantly improves the product's installation efficiency and reliability.

Description

Technical Field

[0001] This utility model relates to the field of control equipment technology, and in particular to a small black box for power control. Background Technology

[0002] Traditional brightness adjustment power control boxes typically consist of two main parts: the power control box and the power supply box, often assembled using screws. This connection method is cumbersome and inefficient, requiring screwdrivers and other tools for installation and disassembly. Repeated disassembly and reassembly can easily lead to stripped screws, worn connectors, and even shell damage, affecting overall structural stability and product lifespan. It also inconveniences later maintenance and repairs, increasing labor and time costs. Furthermore, regarding the output cable fixing, common structures involve the output cable passing directly through a hole in the box wall or being clipped into a thin-walled slot. Due to the box's structure and space limitations, its inner wall is often thin and has limited mechanical strength, providing insufficient radial constraint on the output cable. During equipment handling, cable laying, or daily use, the output cable is easily loosened by external pulling, potentially causing internal terminals to loosen or be damaged, severely impacting the reliability and safety of the electrical connection. Simultaneously, frequent plugging and unplugging or continuous vibration can exacerbate wear between the cable and the box's thin structure, further increasing the risk of connection failure. In summary, existing power control boxes have significant defects in terms of structural connection and cable fixing, making it difficult to meet users' comprehensive needs for convenient installation, stable connection and reliable use. There is an urgent need for a new connection and fixing solution that can be quickly assembled and disassembled without tools and can effectively constrain cables. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a small black box for power control.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a power control black box, comprising a power supply box for installing a power supply, a control box, and a control output line at least partially confined within the control box. The control box includes a box body and a box cover. The power supply box is provided with a connector, and the control box is provided with a connector portion that mates with the connector. The connector portion includes a socket and a guide slope located on the socket inlet side. The connector includes a plug and a mating slope formed on the plug. The power supply box is installed in a top-to-bottom manner and connects to the power control black box via the connector. The interaction between the inclined plane and the guide inclined plane guides the insertion block to slide into the insertion hole until it reaches the locking position; the box body is provided with several receiving slots for accommodating the control output line, and the receiving slots are provided with an open structure above them; a limiting seat is connected to the control output line, the limiting seat can overlap in the receiving slot, and the limiting seat at least partially abuts against the inner side wall of the box body; the upper surface of the limiting seat is provided with a limiting groove; the inner side of the box cover is provided with a limiting plate, and when the box cover and the box body are closed, the limiting plate is inserted into the limiting groove to restrict the control output line from being pulled out of the box body.

[0005] As a preferred embodiment of this utility model, a guide plate is provided on the inlet side of the insertion hole, and the guide plate is provided with the guide slope; when the insertion block reaches the locking position, its mating slope and the guide slope fit together.

[0006] As a preferred embodiment of this utility model, the bottom of the guide plate is provided with a support platform; when the insert block reaches the locking position, the bottom of the insert block abuts against the support platform.

[0007] As a preferred embodiment of this utility model, the plug has a plate-like structure, and a receiving gap is formed between the plug and the outer wall of the power supply box for inserting the guide plate; the receiving gap has an opening on the side facing the guide plate, and the mating inclined surface is formed on the side of the plug away from the opening.

[0008] As a preferred embodiment of this utility model, the power supply box is provided with the plug-in component on both sides along its length; the control box is provided with the plug-in portion on both sides along its length to cooperate with the plug-in component; the inner wall of the plug hole of the plug-in portion is provided with a locking structure at the locking position, and the plug block is provided with a corresponding structure to cooperate with the locking structure; the locking structure is a locking block or a locking groove, and the corresponding structure is a corresponding locking groove or a locking block.

[0009] As a preferred embodiment of this utility model, the box body is provided with a support frame corresponding to the position of the receiving groove; the limiting seat is mounted on the support frame and is inserted into the support frame; the support frame includes two symmetrically arranged support plates; the side of the support plate facing the box body is provided with a positioning notch; the limiting seat is symmetrically provided with limiting holes that are inserted into the support plates; a part of the structure of the limiting seat is embedded in the positioning notch.

[0010] As a preferred embodiment of this utility model, the limiting seat is provided with a blocking plate on the side facing away from the receiving groove; when the box cover and the box body are closed, the limiting plate abuts against the outer wall of the blocking plate.

[0011] As a preferred embodiment of this utility model, the box body is provided with a first positioning component, a second positioning component, and a third positioning component with different spatial positions; the first positioning component, the second positioning component, and the third positioning component together form an installation area in the box body that can be adapted to the first control module, the second control module, and the third control module; the control module is detachably housed in the installation area and fixed to the box body by locking components.

[0012] As a preferred embodiment of this utility model, the box body is provided with multiple positioning plates arranged along the same straight line; when any control module is placed in the installation area, its side wall is linearly abutted against the multiple positioning plates; the box body is provided with a connecting post, the connecting post being located on the side opposite to the positioning plates; a positioning pressure plate is fixed to the connecting post by screws; when the first control module is placed in the installation area, the positioning pressure plate can press and fix the first control module onto the box body; the first positioning component includes positioning members located diagonally opposite the first control module, and the two side positioning members can respectively abut against the two side walls of the first control module.

[0013] As a preferred embodiment of this utility model, a first positioning rib is provided on one side of the box body adjacent to the positioning plate, and a second positioning rib and a third positioning rib are respectively provided on the side of the box body relatively away from the first positioning rib. The width between the first positioning rib and the second positioning rib is adapted to the size of the second control module, and the width of the first positioning rib and the third positioning rib is adapted to the size of the third control module. When the second control module is housed in the installation area, one side of it abuts against the positioning plate, and the adjacent two sides are limited between the first positioning rib and the second positioning rib, and its bottom overlaps the positioning member. When the third control module is housed in the installation area, one side of it abuts against the positioning plate, and the adjacent two sides are limited between the first positioning rib and the third positioning rib.

[0014] Compared with the prior art, the beneficial effects of this utility model are: Through the interaction of the guide ramp and the mating ramp, precise guidance and rapid docking between the power supply box and the power control black box are achieved. The installation process requires no external tools; a simple plug-in action is all that's needed. This completely overcomes the cumbersome and inefficient nature of traditional screw-fixing methods, significantly reducing installation time and labor costs. Specifically, the connection method involves the plug sliding into the socket and finally reaching the locking position. The snap-fit ​​between the block and the slot, the support of the support platform, and the tight fit of the ramps create multiple limits and stable support, ensuring the mechanical stability and electrical continuity of the connection under complex environments such as vibration. This effectively avoids connection failures caused by loose screws or stripped threads. This application eliminates the hassle of finding and using tools, simplifying the complex installation process into a one-step plug-in operation, fundamentally improving the user experience.

[0015] By utilizing the overlapping fit between the limiting seat and the receiving groove of the box, as well as the abutting structure between the limiting seat and the inner wall of the box, the outward displacement of the output cable is fundamentally restricted, significantly enhancing the tensile strength of the cable fixation. Even in a thin-walled box structure, it effectively avoids problems such as cable loosening, terminal loosening, or even damage caused by external pulling. Specifically, axial positioning is achieved through the overlapping fit between the limiting seat and the receiving groove; the limiting plate on the box cover precisely inserts into the limiting groove of the limiting seat when the box cover is closed. This dual fixing mechanism effectively enhances the tensile strength and connection reliability of the output cable within the thin-walled box, completely solving the problem of output cables being easily pulled out or loosened in traditional structures. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the power control black box of this utility model; Figure 2 This is a structural schematic diagram of the power supply box and control box of this utility model; Figure 3 This is a schematic diagram of the power supply box in this utility model; Figure 4 yes Figure 3 A magnified view of part A; Figure 5 This is a top view of the structure of the control box of this utility model; Figure 6 yes Figure 5 A magnified view of part B; Figure 7 This is a schematic diagram of the internal structure of the control box of this utility model; Figure 8 yes Figure 7 A magnified view of part C; Figure 9 This is a schematic diagram of the control output line of this utility model; Figure 10 This is a schematic diagram of the box body structure of the control box in this utility model; Figure 11 yes Figure 10 A magnified view of part D; Figure 12 This is a schematic diagram of the structure of the box cover and the control output line in this utility model; Figure 13 This is a schematic diagram of the structure of the control box of this utility model with the first control module installed inside. Figure 14 This is a schematic diagram of the structure of the control box of this utility model with the second control module installed inside. Figure 15 This is a schematic diagram of the structure of the control box of this utility model with the third control module installed inside.

[0017] Reference numerals: 1. Power supply box; 2. Control box; 3. Control output line; 4. Box body; 5. Box cover; 6. Socket; 7. Guide slope; 8. Insert block; 9. Mating slope; 10. Receiving groove; 11. Limiting seat; 12. Limiting groove; 13. Limiting plate; 14. Guide plate; 15. Support platform; 16. Receiving gap; 17. Locking block; 18. Locking slot; 19. Support frame; 20. Support plate; 21. Positioning notch; 22. Limiting hole; 23. Blocking plate; 24. First control module; 25. Second control module; 26. Third control module; 27. Positioning plate; 28. Connecting column; 29. ​​Positioning pressure plate; 30. Positioning component; 31. First positioning rib; 32. Second positioning rib; 33. Third positioning rib. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] like Figure 1-15The diagram shows a small black box for power control, comprising a power supply box 1 for housing the power supply, a control box 2, and a control output line 3 at least partially confined within the control box 2. The control box 2 includes a box body 4 and a cover 5 (connected by snap-fit, plug-in, or screws, etc.). The power supply box 1 has a connector, and the control box 2 has a connector portion that mates with the connector. The connector portion includes a socket 6 and a guide slope 7 located on the inlet side of the socket 6. The connector includes a plug block 8 and a mating slope 9 formed on the plug block 8. The power supply box 1 is installed from top to bottom and connects to the small black box for power control, with the mating slope 9 and guide slope 7 connecting the connector. The interaction guides the insertion block 8 to slide into the insertion hole 6 until it reaches the locking position; the box body 4 is provided with a plurality of receiving slots 10 for accommodating the control output line 3, and the upper part of the receiving slots 10 is provided with an open structure; the control output line 3 is connected to a limiting seat 11, the limiting seat 11 can overlap in the receiving slot 10, and the limiting seat 11 at least partially abuts against the inner side wall of the box body 4; the upper surface of the limiting seat 11 is provided with a limiting groove 12; the inner side of the box cover 5 is provided with a limiting plate 13, and when the box cover 5 and the box body 4 are closed, the limiting plate 13 is inserted into the limiting groove 12 to restrict the control output line 3 from being pulled out of the box body 4. The black box in this embodiment has a black shell and integrates a control module and a power module. The size of the power control black box is usually within the range of (length ≤ 300mm, width ≤ 150mm, height ≤ 50mm), which is a compact design. The specific external dimensions of this application are 283.5mm (length) x 135mm (width) x 40mm (height). Within this range and compared with similar power control black boxes, it has a higher space utilization rate and is more compact.

[0021] Through the interaction of the guide ramp 7 and the mating ramp 9, precise guidance and rapid docking between the power supply box 1 and the power control black box are achieved. The installation process requires no external tools; a simple plug-in action is all that's needed. This completely overcomes the cumbersome and inefficient nature of traditional screw fixing methods, significantly reducing installation time and labor costs. Specifically, the connection method of the plug 8 sliding into the socket 6 and finally reaching the locking position, the snap-fit ​​between the locking block 17 and the slot 18, the support of the support platform 15, and the tight fit of the ramps form multiple limits and stable support, ensuring the mechanical stability and electrical continuity of the product connection under complex environments such as vibration, effectively avoiding connection failures caused by loose screws or stripped threads. This application eliminates the hassle of finding and using tools, simplifying the complex installation process into a one-step direct plug-in operation, fundamentally improving the user experience. The improvement in this application lies in the innovative mechanical connection structure between the power supply box 1 and the control box 2, specifically involving the physical engagement method of the connectors and the plug-in parts, including achieving rapid guidance and locking through the interaction of the guide slope 7 and the mating slope 9. This solution primarily addresses the convenience and reliability of assembling the power module and control module housings. As for how the power control box adjusts the display brightness, and how the power supply and the power control box are electrically connected via cables or circuits, these utilize existing mature technologies and are not the focus of this application.

[0022] By using the overlapping fit between the limiting seat 11 and the receiving groove 10 of the box 4, and the abutting structure between the limiting seat 11 and the inner wall of the box 4, the outward displacement of the output line is fundamentally restricted, significantly enhancing the tensile strength of the cable fixation. Even in the thin-walled box 4 structure, problems such as wire loosening, terminal loosening, or even damage caused by external pulling can be effectively avoided. Specifically, axial positioning is achieved through the overlapping fit between the limiting seat 11 and the receiving groove 10; the limiting plate 13 on the box cover 5 is precisely inserted into the limiting groove 12 of the limiting seat 11 when the box cover 5 is closed. This double fixing mechanism effectively enhances the tensile strength and connection reliability of the output line within the thin-walled box 4, completely solving the problem of the output line being easily pulled out or loosened in traditional structures.

[0023] A guide plate 14 is provided on the inlet side of the insertion hole 6, and the guide plate 14 is provided with the guide slope 7; when the insertion block 8 reaches the locking position, its mating slope 9 and the guide slope 7 fit together.

[0024] The bottom of the guide plate 14 is provided with a support platform 15; when the insert 8 reaches the locking position, the bottom of the insert 8 abuts against the support platform 15.

[0025] The plug 8 has a plate-like structure, and a receiving gap 16 is formed between the plug 8 and the outer wall of the power box 1 for the guide plate 14 to be inserted; the receiving gap 16 has an opening on the side facing the guide plate 14, and the mating inclined surface 9 is formed on the side of the plug 8 away from the opening.

[0026] The power supply box 1 has the aforementioned connectors on both sides along its length; the control box 2 has a connector portion on both sides along its length that mates with the connectors; the inner wall of the socket 6 of the connector portion has a locking structure at the locking position, and the plug block 8 has a corresponding structure that mates with the locking structure; the locking structure is a locking block 17 or a locking groove 18, and the corresponding structure is a corresponding locking groove 18 or a locking block 17.

[0027] The box body 4 is provided with a support frame 19 corresponding to the position of the receiving groove 10; the limiting seat 11 is mounted on the support frame 19 and is inserted into the support frame 19; the support frame 19 includes two symmetrically arranged support plates 20; the side of the support plate 20 facing the box body 4 is provided with a positioning notch 21; the limiting seat 11 is symmetrically provided with limiting holes 22 that are inserted into the support plate 20; a part of the structure of the limiting seat 11 is embedded in the positioning notch 21.

[0028] The limiting seat 11 has a blocking plate 23 on the side facing away from the receiving groove 10; when the box cover 5 and the box body 4 are closed, the limiting plate 13 abuts against the outer wall of the blocking plate 23.

[0029] The housing 4 contains a first positioning component, a second positioning component, and a third positioning component with different spatial positions. The first positioning component, the second positioning component, and the third positioning component together form an installation area within the housing 4 that can accommodate the first control module 24, the second control module 25, and the third control module 26. The control modules are detachably housed within the installation area and fixed to the housing 4 by locking components.

[0030] The housing 4 contains multiple positioning plates 27 arranged in a straight line. When any control module is placed in the installation area, its sidewalls are linearly abutted against the multiple positioning plates 27. The housing 4 is provided with a connecting post 28, which is located on the side opposite to the positioning plates 27. A positioning pressure plate 29 is fixed to the connecting post 28 by screws. When the first control module 24 is placed in the installation area, the positioning pressure plate 29 can press and fix the first control module 24 onto the housing 4. The first positioning component includes positioning elements 30 located at the diagonal of the first control module 24, and the two positioning elements 30 can abut against the two side walls of the first control module 24 respectively.

[0031] The box body 4 is provided with a first positioning rib 31 on one side adjacent to the positioning plate 27. The box body 4 is provided with a second positioning rib 32 and a third positioning rib 33 on the side away from the first positioning rib 31. The width between the first positioning rib 31 and the second positioning rib 32 is adapted to the size of the second control module 25. The width of the first positioning rib 31 and the third positioning rib 33 is adapted to the size of the third control module 26. When the second control module 25 is installed in the installation area, one side of it abuts against the positioning plate 27, and the adjacent two sides are limited between the first positioning rib 31 and the second positioning rib 32, and its bottom overlaps the positioning member 30. When the third control module 26 is installed in the installation area, one side of it abuts against the positioning plate 27, and the adjacent two sides are limited between the first positioning rib 31 and the third positioning rib 33. In this embodiment, the second control module 25 and the third control module 26 are directly fixed by screws after placement, and the first control module 24 is fixed by the positioning pressure plate 29 after placement.

[0032] Users can flexibly select and replace different control modules as needed without replacing the entire control box 2. The module installation process is simple and intuitive; simply place the module into the designated mounting position within the installation area. The module's shape naturally matches the positioning structure, and a simple locking operation completes the fixation. This design greatly simplifies the system configuration, upgrade, and maintenance process, saves operation time, improves work efficiency, and allows for precise adaptation to control modules of different sizes. It eliminates the traditional "one box, one module" design, achieving universal compatibility of a single control box 2 with multiple module specifications.

[0033] In this embodiment, to illustrate the adaptability of the control box 2, the adapted first control module 24, second control module 25, and third control module 26 can be commercially available general-purpose intelligent control modules of different sizes, such as corresponding products from brands like Xiezhu, Weilaiju, and Aolaiwei. The control box 2 is mainly used to install and fix the above modules to construct a complete power control black box, which can be applied to scenarios such as display brightness adjustment.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. A power control black box, comprising a power supply box (1) for housing a power supply, a control box (2), and a control output line (3) at least partially confined within the control box (2), wherein the control box (2) comprises a box body (4) and a box cover (5); characterized in that: The power supply box (1) is provided with a connector, and the control box (2) is provided with a connector portion that mates with the connector; the connector portion includes a socket (6) and a guide slope (7) located on the inlet side of the socket (6); the connector includes a plug (8) and a mating slope (9) formed on the plug (8); the power supply box (1) is connected to the power control black box in a top-to-bottom installation manner, and the plug (8) is guided to slide into the socket (6) until it reaches the locking position through the interaction of the mating slope (9) and the guide slope (7); the box body (4) is provided with several for accommodating the control output line (3) The control output line (3) is connected to a limiting seat (11), which can overlap the receiving groove (10) and at least partially abuts against the inner wall of the box body (4). The upper surface of the limiting seat (11) is provided with a limiting groove (12). The inner side of the box cover (5) is provided with a limiting plate (13). When the box cover (5) and the box body (4) are closed, the limiting plate (13) is inserted into the limiting groove (12) to restrict the control output line (3) from being pulled out of the box body (4).

2. The power control black box according to claim 1, characterized in that: The inlet side of the insertion hole (6) is provided with a guide plate (14), and the guide plate (14) is provided with the guide slope (7); when the insertion block (8) reaches the locking position, its mating slope (9) and the guide slope (7) fit together.

3. The power control black box of claim 2, wherein: The bottom of the guide plate (14) is provided with a support platform (15); when the insert (8) reaches the locking position, the bottom of the insert (8) abuts against the support platform (15).

4. The power control black box of claim 2, wherein: The insert (8) has a plate-like structure, and a receiving gap (16) is formed between the insert (8) and the outer wall of the power box (1) for the guide plate (14) to be inserted; the receiving gap (16) has an opening on the side facing the guide plate (14), and the mating inclined surface (9) is formed on the side of the insert (8) away from the opening.

5. The power control black box according to any one of claims 1-4, characterized in that: The power supply box (1) has the plug-in component on both sides along its length direction; the control box (2) has the plug-in part on both sides along its length direction that cooperates with the plug-in component; the inner wall of the plug hole (6) of the plug-in part has a locking structure at the locking position, and the plug block (8) has a corresponding structure that cooperates with the locking structure; the locking structure is a locking block (17) or a locking groove (18), and the corresponding structure is a corresponding locking groove (18) or a locking block (17).

6. The power control black box of claim 1, wherein: The box body (4) is provided with a support frame (19) corresponding to the position of the receiving groove (10); the limiting seat (11) is mounted on the support frame (19) and is inserted into the support frame (19); the support frame (19) includes two symmetrically arranged support plates (20); the side of the support plate (20) facing the box body (4) is provided with a positioning notch (21); the limiting seat (11) is symmetrically provided with limiting holes (22) that are inserted into the support plate (20); a part of the structure of the limiting seat (11) is embedded in the positioning notch (21).

7. The power control black box according to claim 1, characterized in that: The limiting seat (11) has a blocking plate (23) on the side facing away from the receiving groove (10); when the box cover (5) and the box body (4) are closed, the limiting plate (13) abuts against the outer wall of the blocking plate (23).

8. The power control black box of claim 1, wherein: The box (4) is provided with a first positioning component, a second positioning component and a third positioning component with different spatial positions; the first positioning component, the second positioning component and the third positioning component together form an installation area in the box (4) that can be adapted to the first control module (24), the second control module (25) and the third control module (26); the control module is detachably housed in the installation area and fixed to the box (4) by locking components.

9. The power control black box of claim 8, wherein: The box (4) is provided with a plurality of positioning plates (27) arranged in the same straight line; when any control module is placed in the installation area, its side wall is linearly abutted against the plurality of positioning plates (27); the box (4) is provided with a connecting post (28), the connecting post (28) is located on the side opposite to the positioning plate (27); a positioning pressure plate (29) is fixed on the connecting post (28) by screws; when the first control module (24) is placed in the installation area, the positioning pressure plate (29) can press and fix the first control module (24) onto the box (4); the first positioning component includes a positioning element (30) located at the diagonal of the first control module (24), and the two positioning elements (30) can abut against the two side walls of the first control module (24) respectively.

10. The power control black box according to claim 9, characterized in that: The box body (4) has a first positioning rib (31) on one side adjacent to the positioning plate (27). The box body (4) has a second positioning rib (32) and a third positioning rib (33) on the side away from the first positioning rib (31). The width between the first positioning rib (31) and the second positioning rib (32) is adapted to the size of the second control module (25). The width between the first positioning rib (31) and the third positioning rib (33) is adapted to the size of the third control module (26). When the second control module (25) is installed in the installation area, one side of it abuts against the positioning plate (27), and the adjacent two sides are limited between the first positioning rib (31) and the second positioning rib (32), and its bottom overlaps the positioning component (30). When the third control module (26) is installed in the installation area, one side of it abuts against the positioning plate (27), and the adjacent two sides are limited between the first positioning rib (31) and the third positioning rib (33).

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