An alternating current power supply system residual current acquisition module waterproof box

Abstract

The utility model discloses an alternating current power system residual current acquisition module waterproof box, including, waterproof box cover and waterproof box bottom, the waterproof box cover top is hinged with the top of waterproof box bottom through the hinge, the waterproof box cover is half surrounding type box structure, and its open face edge is provided with the second bending edge, is provided with the elastic waterstop along the second bending edge, the elastic waterstop is U type, and its two sides are closely attached with waterproof box cover and waterproof box bottom respectively, the outlet thin plate is provided with the heat dissipation mouth that is seted up on the outlet thin plate, be provided with the open -and -shut knob on the outlet thin plate, and the open -and -shut knob is locked with the second bending edge of waterproof box cover cooperation realizes, the utility model discloses effectively prevent the water from entering the inside of box body, avoided the influence of electric device and circuit when working, still can avoid the limitation of traditional box type structure to installation and overhauling space, can satisfy the requirement of heat dissipation performance, waterproof performance and convenient degree simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment protection technology, specifically relating to a waterproof box for an AC power system residual current acquisition module. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] With the development of power system equipment, its practical applications are becoming increasingly widespread, and the usage scenarios for various electrical devices are becoming more diversified, leading to a growing demand for outdoor applications. For devices that need to be used outdoors, electrical equipment must be waterproof to prevent water from entering the device due to rain or nearby water spray. Therefore, it is particularly important for electrical equipment to have basic water resistance.

[0004] In the current environment, electrical equipment typically generates a lot of heat during operation, which has led to ventilation and heat dissipation being the dominant design considerations. However, this results in larger gaps between the various parts of the device's chassis, making it difficult to effectively withstand interference from various environments when operating under different natural conditions. This poses a risk of water leakage, and repair costs are very high once damaged. Therefore, waterproof structures need to be added to the structural design.

[0005] The inventors discovered that traditional waterproof structures often employ larger sealing strips or additional ventilation holes, but these two approaches are contradictory: enhanced sealing hinders heat dissipation, while the need for heat dissipation leads to larger gaps in the enclosure, making it difficult to balance waterproofing and ventilation. Furthermore, existing snap-fit ​​structures are prone to loosening due to vibration, and the opening and closing mechanisms are complex, requiring the entire device to be disassembled for maintenance, resulting in low efficiency. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a waterproof box for the residual current acquisition module of AC power system. This effectively prevents water from entering the box and avoids affecting the electrical components and circuits during operation. It also avoids the limitations of traditional box-type structures on installation and maintenance space and can simultaneously meet the requirements of heat dissipation performance, waterproof performance and convenience.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] This utility model provides a waterproof box for a residual current acquisition module of an AC power system, including a waterproof box cover and a waterproof box bottom. The top of the waterproof box cover is hinged to the top of the waterproof box bottom. The waterproof box cover has a semi-enclosed box structure with a secondary bend edge on its open surface. An elastic water-proof sealing strip is provided along the secondary bend edge. The elastic water-proof sealing strip is U-shaped and its two sides are tightly fitted to the waterproof box cover and the waterproof box bottom, respectively. A cable outlet plate is provided at the bottom of the waterproof box bottom, and a heat dissipation vent is provided on the cable outlet plate. An opening and closing knob is provided on the cable outlet plate, and the opening and closing knob cooperates with the secondary bend edge of the waterproof box cover to achieve locking.

[0009] In at least one embodiment, the elastic waterproof sealing strip is a silicone sealing strip with a certain thickness.

[0010] In at least one embodiment, a third bend is provided at a local edge of the secondary bend of the waterproof box cover, which cooperates with the baffle welded to the inner side of the bottom of the waterproof box to form a snap-fit ​​structure.

[0011] In at least one embodiment, the bottom of the waterproof box cover is provided with an extension portion, the bottom of the extension portion extending beyond the cable outlet plate by a certain length, forming a recessed waterproof structure with the bottom of the waterproof box.

[0012] In at least one embodiment, a grounding screw is provided on the extension.

[0013] In at least one embodiment, the opening and closing knob includes a fastening screw, a locking plate, a fixing limiting ring, and a knob, wherein the fixing limiting ring and the knob are mounted on the cable outlet plate; the locking plate cooperates with the secondary bending edge to lock the waterproof box cover.

[0014] In at least one embodiment, the waterproof box cover and the top of the waterproof box bottom are fitted with a liftable support rod.

[0015] In at least one embodiment, a press-fit screw is provided on the inner side of the bottom of the waterproof box for installing the residual current acquisition module of the AC power system.

[0016] In at least one embodiment, the rivet screw is fixed to the inner side of the bottom of the waterproof box, and the connection between the rivet screw and the bottom of the waterproof box is treated with powder coating to form a dense waterproof membrane.

[0017] In at least one embodiment, multiple waterproof box mounting holes are provided on both sides of the bottom of the waterproof box that extend beyond the waterproof box cover.

[0018] The beneficial effects of the above-described technical solution of this utility model are as follows:

[0019] This utility model discloses a waterproof box for residual current acquisition modules in AC power systems. When water droplets flow down from the external environment, the water flow is blocked from the outside of the box by the elastic waterproof sealing strip and flows down along the water guide channel on both sides of the waterproof box cover, hanging down to the bottom of both sides of the box body, effectively preventing water from entering the box body and avoiding the impact on electrical components and circuits during operation. The flip-top and semi-enclosed box design of the waterproof box cover can avoid the limitations of traditional box structure on installation and maintenance space, providing great convenience for power equipment that needs to be periodically debugged and maintained during use. It can ensure that the requirements of heat dissipation and waterproof performance are met while improving the convenience of installation and maintenance. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0021] Figure 1 This is a schematic diagram of the overall structure of a waterproof box for a residual current acquisition module of an AC power system according to this utility model.

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of a waterproof box for a residual current acquisition module of an AC power system from direction A.

[0023] Figure 3 This is a schematic diagram of the bottom structure of a waterproof box for a residual current acquisition module of an AC power system according to this utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of a waterproof box for a residual current acquisition module of an AC power system according to this utility model.

[0025] Figure 5 This is an exploded view of the opening and closing knob structure of a waterproof box for a residual current acquisition module in an AC power system according to this utility model.

[0026] In the picture: 1. Waterproof box lid; 2. Elastic waterproof sealing strip; 3. Waterproof box bottom; 4. Hinge; 5. Baffle; 6. Opening and closing knob; 7. Grounding screw; 8. Support rod.

[0027] The distances or dimensions between parts have been exaggerated to show their positions; the diagram is for illustrative purposes only. Detailed Implementation

[0028] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0029] For ease of description, the words "up," "down," "left," and "right" appearing in this utility model only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings. They do not limit the structure and are merely for the purpose of facilitating the description of this utility model and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Terminology Explanation: The terms "installation," "connection," "linking," and "fixing" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction relationship between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0031] As described in the background section, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a waterproof box for the residual current acquisition module of AC power system. This effectively prevents water from entering the box, avoids affecting the electrical components and circuits during operation, and avoids the limitations of traditional box-type structures on installation and maintenance space. It can simultaneously meet the requirements of heat dissipation performance, waterproof performance, and convenience.

[0032] Example 1

[0033] In a typical embodiment of this utility model, such as Figures 1-5As shown, this embodiment discloses a waterproof box for an AC power system residual current acquisition module, including a waterproof box cover 1 and a waterproof box bottom 3. The top of the waterproof box cover 1 is hinged to the top of the waterproof box bottom 3 via a hinge 4, forming a flip-top structure. When installing or repairing the AC power system residual current acquisition module, the waterproof box cover 1 can be directly flipped upwards, which is simple to operate and avoids the problem of limited left and right space caused by traditional left and right opening or double opening structures, increasing the space available for operation by personnel. The waterproof box cover 1 is a semi-enclosed box-type structure, with the left and right side walls of the traditional box-type waterproof box set on the flip-top cover. This avoids the problem of needing to go deep into the box for installation or repair of traditional waterproof boxes, further improving the convenience of installation and repair of the AC power system residual current acquisition module. The waterproof box cover 1 has a double-bent edge on its open side facing the waterproof box bottom 3. An elastic water-resistant sealing strip 2, U-shaped, is installed along this edge. When the waterproof box cover 1 is closed, both sides of the U-shaped strip are tightly fitted to the cover and bottom 3. When the U-shaped strip is tightly fitted to the double-bent edge and deformed by compression, a gap resembling an angle is formed between the bend radius of the double-bent edge and the U-shaped strip, creating a drainage channel. When water drips from the outside environment, the water is completely blocked from the box by the U-shaped strip and flows down the sides of the cover 1 along the drainage channel, preventing moisture from entering the box and affecting the operation of electrical components and wiring. A cable outlet plate is located at the bottom of the waterproof box bottom 3, through which the wiring extends outside the box. Multiple ventilation holes are provided on the cable outlet plate, enabling heat dissipation while maintaining waterproof performance, thus meeting ventilation requirements. An opening and closing knob 6 is provided on the lead-out thin plate. The opening and closing knob 6 cooperates with the secondary bending edge of the waterproof box cover 1 to achieve locking. This ensures that the waterproof box cover 1 is locked when closed, and also ensures that the elastic waterproof sealing strip 2 is always squeezed when the waterproof box cover 1 is closed. This effectively prevents the sealing strip from loosening due to vibration, impact and other factors during device operation, and further ensures the waterproof performance of the waterproof box.

[0034] In this embodiment, the elastic waterproof sealing strip 2 is a silicone sealing strip with a certain thickness, which can ensure that the gap between the waterproof box cover 1 and the waterproof box bottom 3 is completely filled and elastically deformed, thus ensuring the waterproof performance of the waterproof box.

[0035] In this embodiment, as Figure 2 and Figure 4 As shown, a third bend is provided at a local edge of the secondary bend of the waterproof box cover 1, which cooperates with the baffle 5 welded to the inner side of the waterproof box bottom 3 to form a snap-fit ​​structure to initially fix the waterproof box cover 1. Figure 2As shown in Part B of the diagram. When the waterproof box cover 1 is closed, the waterproof box cover 1 will snap into the baffle 5, thereby pressing the elastic waterproof sealing strip 2 around the perimeter, effectively preventing rainwater from flowing into the interior of the waterproof box from the seams.

[0036] In this embodiment, as Figure 3 and Figure 4 As shown, the bottom of the waterproof box cover 1 is provided with an extension, the bottom of which extends beyond the cable outlet plate by a certain length, forming a recessed waterproof structure with the bottom of the waterproof box 3. By extending the side wall of the waterproof box cover 1, the recessed protective structure formed with the bottom of the waterproof box 3 can effectively prevent water from entering the circuit. When water flows to the bottom of the side wall of the box during operation, it will not be absorbed and flow back into the box through the cable outlet, effectively avoiding the risk of external moisture affecting the normal operation of the device.

[0037] In this embodiment, a grounding screw 7 is provided on the extension section to connect the ground wire, ensuring grounding conductivity when the residual current acquisition module of the AC power system is powered on. By providing the grounding screw 7 on the extension section, water ingress through the opening and the interior of the waterproof enclosure can be prevented, further ensuring the safety of the internal wiring and components of the enclosure.

[0038] In this embodiment, as Figure 5 As shown, the opening / closing knob 6 includes a fastening screw, a locking plate, a fixing limit ring, and a knob. The fixing limit ring and the knob are mounted on the cable outlet plate. When the knob is turned to the "closed" position, the locking plate presses against the secondary bend edge of the waterproof box cover 1, and the waterproof box cover 1 is locked by the cooperation between the locking plate and the secondary bend edge. When the knob is moved back and forth between the "closed" and "open" positions, the locking plate is driven to lock and unlock, thereby realizing the locking and unlocking of the waterproof box cover 1.

[0039] In this embodiment, the bottom 3 of the waterproof box is equipped with a liftable support rod 8. A row of multiple support recesses is provided at the position corresponding to the support rod 8 on the waterproof box cover 1. When the waterproof box cover 1 is opened, the support rod 8 is placed in the corresponding support recess according to the size of the space to support the waterproof box cover 1, eliminating the need for manual lifting of the waterproof box cover 1 and further improving the convenience of installation and maintenance. Moreover, the multiple support recesses increase the selection of the opening degree of the waterproof box cover, enabling the waterproof box of this embodiment to be applicable in different work spaces, thus improving the applicability of the waterproof box.

[0040] In this embodiment, as Figure 4 As shown, a rivet screw is provided on the inner side of the waterproof box bottom 3 for installing the residual current acquisition module of the AC power system. The rivet screw is fixed to the inner side of the waterproof box bottom 3, and the connection between the rivet screw and the waterproof box bottom 3 is treated with multiple powder coatings to form a dense waterproof membrane, preventing moisture from entering the box through the mounting hole and damaging the circuit and components.

[0041] In this embodiment, asFigure 1 , Figure 3 and Figure 4 As shown, multiple waterproof box mounting holes are opened on both sides of the bottom 3 of the waterproof box, extending beyond the waterproof box cover 1. By setting the waterproof box mounting holes outside the waterproof box cover 1, it can be ensured that water will not enter the box through the waterproof box mounting holes, thus ensuring the waterproof performance of the box.

[0042] In this embodiment, the waterproof box for the residual current acquisition module of an AC power system is designed so that when water droplets flow down from the external environment, the water flow is blocked from the outside of the box by the elastic waterproof sealing strip 2, and flows down along the water guide channel along both sides of the waterproof box cover 1, and then flows down to the bottom of both sides of the box, effectively preventing water from entering the box and avoiding the impact on electrical components and lines during operation. The flip-top and semi-enclosed box design of the waterproof box cover 1 can avoid the limitations of traditional box-type structures on installation and maintenance space, and provides great convenience for situations where power equipment needs to be periodically debugged and maintained during use. It can ensure that the requirements of heat dissipation and waterproof performance are met while improving the convenience of installation and maintenance.

[0043] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A waterproof box for a residual current acquisition module in an AC power system, characterized in that, The device includes a waterproof lid and a waterproof bottom. The top of the waterproof lid is hinged to the top of the waterproof bottom. The waterproof lid has a semi-enclosed box-like structure with a secondary bend edge on its open side. An elastic water-proof sealing strip is provided along the secondary bend edge. The elastic water-proof sealing strip is U-shaped and its two sides are tightly fitted to the waterproof lid and the waterproof bottom, respectively. A cable outlet plate is provided at the bottom of the waterproof bottom, and a heat dissipation vent is provided on the cable outlet plate. An opening and closing knob is provided on the cable outlet plate, and the opening and closing knob cooperates with the secondary bend edge of the waterproof lid to achieve locking.

2. The waterproof box for the residual current acquisition module of an AC power system as described in claim 1, characterized in that, The elastic waterproof sealing strip is a silicone sealing strip with a certain thickness.

3. The waterproof box for the residual current acquisition module of an AC power system as described in claim 1, characterized in that, A third bend is provided at a local edge of the secondary bend of the waterproof box lid, which cooperates with the baffle welded to the inner side of the bottom of the waterproof box to form a snap-fit ​​structure.

4. The waterproof box for the residual current acquisition module of an AC power system as described in claim 1, characterized in that, The bottom of the waterproof box cover is provided with an extension, the bottom of which extends beyond the cable outlet plate by a certain length, forming a recessed waterproof structure with the bottom of the waterproof box.

5. A waterproof box for an AC power system residual current acquisition module as described in claim 4, characterized in that, A grounding screw is provided on the extension.

6. The waterproof box for the residual current acquisition module of an AC power system as described in claim 1, characterized in that, The opening and closing knob includes a fastening screw, a locking plate, a fixing limit ring, and a knob. The fixing limit ring and the knob are installed on the cable outlet plate. The locking plate cooperates with the secondary bending edge to lock the waterproof box cover.

7. A waterproof box for an AC power system residual current acquisition module as described in claim 1, characterized in that, The waterproof box cover and the top of the waterproof box bottom are fitted with liftable support rods.

8. A waterproof box for an AC power system residual current acquisition module as described in claim 1, characterized in that, The waterproof box has rivet screws on the inside of its bottom for installing the AC power system residual current acquisition module.

9. A waterproof box for an AC power system residual current acquisition module as described in claim 8, characterized in that, The rivet screws are fixed to the inner side of the bottom of the waterproof box, and the connection between the rivet screws and the bottom of the waterproof box is treated with powder coating to form a dense waterproof membrane.

10. A waterproof box for an AC power system residual current acquisition module as described in claim 1, characterized in that, Multiple waterproof box mounting holes are provided on both sides of the bottom of the waterproof box, extending beyond the waterproof box cover.

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