High-voltage electrical equipment shielding cover with positioning buckle

Abstract

The application relates to a high-voltage electrical equipment shielding cover with positioning buckles, and relates to the technical field of shielding covers. The shielding cover comprises a base and a shielding cover body which is detachably installed on the base, and a plurality of positioning components are arranged on both sides of the base to connect the base and the shielding cover body. The positioning component comprises a positioning piece and a clamping piece. An installation hole and a rotating groove are arranged on both sides of the base, the installation hole is in communication with the rotating groove, the installation hole is arranged on one side of the base close to the shielding cover body, the clamping piece is arranged on the installation hole and extends into the rotating groove, the positioning piece is arranged on both sides of the shielding cover body, the positioning piece and the clamping piece are arranged in one-to-one correspondence, the positioning piece extends into and out of the clamping piece, and the end of the positioning piece is clamped on the outside of the clamping piece by rotating the positioning piece. The application has the effects that the dismounting and mounting can be completed without special tools, the problem of difficult dismounting and mounting in a narrow space is solved, the reliability of the shielding cover connection is ensured, and the effect of meeting the requirement of rapid maintenance of high-voltage equipment is achieved.

Description

Technical Field

[0001] This application relates to the technical field of shielding covers, and in particular to a shielding cover for high-voltage electrical equipment with positioning clips. Background Technology

[0002] As a primary protective component, the shielding cover of high-voltage electrical equipment directly impacts equipment maintenance efficiency and operational safety due to the reliability and ease of its installation structure. Currently, the connection between the shielding cover and the base of high-voltage electrical equipment is mostly secured with bolts. Bolted connections require specialized tools, making disassembly and assembly difficult within the confined installation space of high-voltage equipment. Furthermore, bolts are prone to loosening due to vibration, leading to shielding cover connection failure and a decline in electromagnetic shielding performance. In addition, the precision of traditional bolted connections decreases after repeated disassembly and assembly, and they cannot meet the high-efficiency requirement of quick disassembly and reassembly of the shielding cover during rapid maintenance of high-voltage equipment, thus affecting the overall operational efficiency and long-term stability of electromagnetic protection. Utility Model Content

[0003] To address the issues of bolt fastening between the shielding cover and base of high-voltage electrical equipment, which requires specialized tools for connection, is difficult to install and disassemble in the confined space of high-voltage equipment, and is prone to loosening due to vibration, leading to shielding cover connection failure and reduced electromagnetic shielding performance, this application provides a high-voltage electrical equipment shielding cover with positioning buckles.

[0004] This application provides a high-voltage electrical equipment shielding cover with positioning clips, which adopts the following technical solution:

[0005] A high-voltage electrical equipment shielding cover with positioning buckles includes a base and a shielding cover body detachably mounted on the base. Several positioning components are provided on both sides of the base to connect the base and the shielding cover body.

[0006] The positioning component includes a positioning element and a snap-fit ​​element. The base has mounting holes and rotating grooves on both sides. The mounting holes are connected to the rotating grooves. The mounting holes are located on the base near the shield body. The snap-fit ​​element is installed in the mounting hole and extends into the rotating groove. The positioning element is installed on both sides of the shield body. The positioning element and the snap-fit ​​element are configured in a one-to-one correspondence. The positioning element extends into and out of the snap-fit ​​element. By rotating the positioning element, the end of the positioning element is snapped onto the outside of the snap-fit ​​element.

[0007] By adopting the above technical solution, the base provides an installation foundation for the shielding cover body. The positioning component achieves quick connection and separation of the two through the cooperation of the positioning part and the snap-fit ​​part, and can be completed without special tools. After the positioning part extends into the snap-fit ​​part, rotating the positioning part causes the end to snap onto the outside of the snap-fit ​​part, replacing the traditional bolt fastening. This solves the problem of difficult disassembly and assembly in confined spaces. At the same time, the snap-fit ​​structure is not easily loosened by vibration, ensuring the reliability of the shielding cover connection, improving the stability of electromagnetic shielding performance, and meeting the high-efficiency requirements of rapid maintenance of high-voltage equipment.

[0008] Optionally, the top of the snap-fit ​​component is provided with a through hole, and elastic elements are provided on both sides of the snap-fit ​​component. A snap-fit ​​gap is provided between the two elastic elements for the positioning element to pass through. A limiting piece is provided at the end of the elastic element away from the through hole to limit the positioning element and fix the base and the shield body.

[0009] By adopting the above technical solution, the through hole provides a precise insertion channel for the positioning component, the elastic component has a certain elastic deformation capability, and can adaptably expand the snap-fit ​​gap during the insertion of the positioning component to facilitate the smooth insertion of the positioning component; the limiting piece plays an axial limiting role for the positioning component after insertion, preventing the positioning component from accidentally falling out, and together with the clamping force of the elastic component, further enhances the connection stability between the positioning component and the snap-fit ​​component, ensuring the stable fixation of the base and the shielding cover body.

[0010] Optionally, the top of the positioning member is provided with a rotating member, and the rotating member is sequentially connected to a connecting rod and a limiting member. The connecting rod can be opened and locked between the two elastic members to allow the limiting member to pass through and be locked to the outside of the locking member.

[0011] By adopting the above technical solution, the rotating component allows the operator to easily rotate the positioning component. The connecting rod, as a force transmission component, expands the elastic component and engages within the gap during the insertion process, thus achieving initial fixation of the positioning component and the engaging component. After the limiting component is inserted, it is engaged with the outside of the engaging component by rotation, forming a double fixing structure, which improves the reliability of the connection and the anti-loosening effect.

[0012] Optionally, the thickness of the limiting member is less than the snap-fit ​​gap, and the width of the limiting member is greater than the snap-fit ​​gap.

[0013] By adopting the above technical solution, the thickness of the limiting component is less than the snap-fit ​​gap to ensure that it can pass smoothly through the channel between the elastic components, and the width is greater than the snap-fit ​​gap to ensure that after the positioning component is rotated, the limiting component cannot pass through the gap in the opposite direction, thus firmly snapping onto the outside of the snap-fit ​​component, forming a reliable mechanical locking structure, avoiding accidental detachment of the positioning component, and ensuring the stability of the shielding cover installation.

[0014] Optionally, the connecting rod includes a first rod, a second rod, and a third rod connected in sequence. The other end of the first rod is connected to the rotating member, and the other end of the third rod is connected to the limiting member. The first rod passes through the mounting hole, and the second rod passes between the two elastic members. In its natural state, the diameter of the second rod is larger than the snap-fit ​​gap. During the insertion of the second rod, the two elastic members can be spread apart. The inner sidewalls of the two elastic members are clamped on the third rod. The limiting member is located on the side of the third rod away from the rotating member, and the limiting member and the limiting piece abut against each other in the axial direction.

[0015] By adopting the above technical solution, the first rod and the mounting hole cooperate to ensure the coaxiality of the positioning component as a whole. The second rod, with a diameter larger than the snap-fit ​​gap, expands the elastic element during insertion to generate an elastic clamping force, thereby enhancing the tightness of the connection. The third rod is clamped by the inner wall of the elastic element, further restricting the axial movement of the positioning component. Together with the axial abutment of the limiting element and the limiting piece, a multi-dimensional fixing structure is formed to ensure that the positioning component is not easily loosened in a vibration environment and to improve the reliability of the connection.

[0016] Optionally, the end of the third rod near the limiting member is arranged in a spiral shape.

[0017] By adopting the above technical solution, the spiral structure increases the friction between the third rod and the inner wall of the elastic element, forming a thread-like locking effect during the clamping process of the elastic element. This further prevents the positioning element from axially shifting or rotating under vibration or external force, enhances the anti-loosening performance of the positioning assembly, and ensures the long-term stable installation of the shielding cover.

[0018] Optionally, the shielding cover body includes a heat-absorbing layer, a heat-conducting layer, a shielding layer, a heat-dissipating layer, and a waterproof layer arranged sequentially from the inner layer to the outer layer.

[0019] By adopting the above technical solution, the heat-absorbing layer absorbs the heat generated by the operation of electrical equipment, the heat-conducting layer efficiently transfers the heat to the heat-dissipating layer, and the heat-dissipating layer accelerates heat dissipation, reducing the impact of excessively high internal temperature on equipment performance. The shielding layer is used to block electromagnetic radiation leakage, and the waterproof layer prevents external moisture from seeping in, protecting internal electrical components from moisture damage. Through the synergistic effect of the multi-layer structure, while ensuring electromagnetic shielding performance, the heat dissipation and waterproofing of the shielding cover are improved, extending the service life of the equipment.

[0020] Optionally, the shielding cover body has a wire hole for threading wires, and the base has a storage slot for placing electrical components. The wire hole and the storage slot are positioned correspondingly, and a sealing gasket is provided inside the wire hole.

[0021] By adopting the above technical solution, the wire hole and the storage slot are set to facilitate the wire to pass through the inside of the shielding cover, which meets the equipment wiring requirements; the sealing gasket fills the gap between the wire and the wire hole to prevent dust and moisture from entering the inside of the shielding cover through the wire hole, while reducing electromagnetic radiation leakage from the gap.

[0022] Optionally, the shielding cover body has several heat dissipation holes on both sides, and the heat dissipation holes are provided with metal shielding mesh.

[0023] By adopting the above technical solutions, the heat dissipation holes enhance the air circulation inside and outside the shielding cover, accelerate the discharge of internal heat, and improve heat dissipation efficiency; while ensuring ventilation, the metal shielding mesh utilizes the electromagnetic shielding properties of metal to block electromagnetic radiation from leaking out through the heat dissipation holes, avoiding the heat dissipation structure from affecting the overall shielding effect, and achieving a balance between heat dissipation and shielding performance.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. In this device, the positioning component replaces the traditional bolt connection by engaging the positioning part and the snap-fit ​​part. This allows for quick assembly and disassembly of the shielding cover without the need for special tools, solving the problem of difficult assembly and disassembly in confined spaces. Furthermore, the snap-fit ​​structure has excellent anti-loosening performance, reducing the risk of connection failure caused by vibration and improving equipment maintenance efficiency and electromagnetic protection stability.

[0026] 2. The multi-layered shielding cover integrates heat absorption, heat conduction, shielding, heat dissipation, and waterproofing functions. With the addition of heat dissipation holes and a metal shielding mesh, it effectively improves heat dissipation efficiency and waterproof and dustproof capabilities while ensuring the core performance of electromagnetic shielding, thus extending the service life of the equipment. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0028] Figure 2 This is a top view of an embodiment of this application;

[0029] Figure 3 yes Figure 2 Sectional view of AA;

[0030] Figure 4 This is a schematic diagram of the structure in which the positioning element and the snap-fit ​​element are connected in an embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the positioning element in the embodiments of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Base; 11. Storage slot; 12. Mounting hole; 13. Rotating slot; 2. Shielding cover body; 21. Wiring hole; 22. Heat dissipation hole; 3. Positioning assembly; 31. Positioning component; 311. Rotating component; 312. Connecting rod; 3121. First rod; 3122. Second rod; 3123. Third rod; 313. Limiting component; 32. Snap-fit ​​component; 321. Through hole; 322. Elastic component; 323. Limiting piece. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0037] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0038] This application discloses a high-voltage electrical equipment shielding cover with positioning buckles, referring to... Figures 1-3 The high-voltage electrical equipment shielding cover with positioning buckle includes a base 1 and a shielding cover body 2 that can be detachably installed on the base 1. Several positioning components 3 are provided on both sides of the base 1 to connect the base 1 and the shielding cover body 2.

[0039] The positioning component 3 includes a positioning element 31 and a snap-fit ​​element 32. The base 1 has mounting holes 12 and rotating grooves 13 on both sides. The mounting holes 12 and rotating grooves 13 are connected. The mounting holes 12 are located on the side of the base 1 near the shield body 2. The snap-fit ​​element 32 is installed on the mounting holes 12 and extends into the rotating groove 13. The positioning element 31 is installed on both sides of the shield body 2. The positioning element 31 and the snap-fit ​​element 32 are set in a one-to-one correspondence. The positioning element 31 extends into and out of the snap-fit ​​element 32. By rotating the positioning element 31, the end of the positioning element 31 is snapped into the outside of the snap-fit ​​element 32.

[0040] In this high-voltage electrical equipment shielding cover with positioning clips, the base 1 provides an installation platform for the shielding cover body 2 and also provides a fixed installation position for the snap-fit ​​component 32 in the positioning assembly 3. The shielding cover body 2 mainly functions as electromagnetic shielding, blocking the leakage of electromagnetic radiation generated during equipment operation, while also providing physical protection for internal electrical components to prevent the intrusion of external dust, impurities, etc.

[0041] The positioning component 3 achieves a detachable connection between the positioning part 31 and the snap-fit ​​part 32, replacing the traditional bolt connection method. This enables the shielding cover to be quickly disassembled and assembled, solving the problems of difficult disassembly and assembly and easy loosening of traditional bolt connections in confined spaces. It improves the efficiency of disassembly and assembly of the shielding cover, while ensuring the stability of the connection and ensuring the long-term stability of electromagnetic shielding performance.

[0042] Specifically, several positioning components 31 are installed on both sides of the shielding cover body 2, serving as active components connecting the shielding cover body 2 and the snap-fit ​​component 32. The snap-fit ​​component 32 acts as a cooperating component of the positioning component 31, providing a through-path and snap-fit ​​point for the positioning component 31. By extending the positioning component 31 into the snap-fit ​​component 32 and rotating it, its end is snapped onto the outside of the snap-fit ​​component 32, forming a locking relationship. Compared with bolted connections, this provides better vibration resistance and reduces the risk of electromagnetic shielding performance degradation due to connection failure. The position of the shielding cover body 2 is fixed to the base 1 through the snap-fit ​​structure, which can be completed without special tools, simplifying the disassembly and assembly process. At the same time, its snap-fit ​​action can accurately transmit the installation position of the shielding cover body 2, ensuring consistency in each installation.

[0043] The mounting hole 12 is used for precise positioning and fixing of the mounting clip 32, and at the same time provides a channel for the positioning member 31 to extend into the base 1, ensuring the initial docking accuracy between the positioning member 31 and the clip 32 and improving the convenience of the connection operation. The rotating groove 13 provides space for the rotation of the positioning member 31 after it is inserted, avoiding structural interference between the positioning member 31 and the base 1 when it rotates, ensuring that the end of the positioning member 31 can be smoothly locked onto the outside of the clip 32, so that the locking function of the positioning component 3 can be effectively realized, while avoiding structural damage to the base 1 or the positioning member 31 during rotation.

[0044] The high-voltage electrical equipment shielding cover with positioning buckle forms a protective structure through the cooperation of the base 1 and the shielding cover body 2. By utilizing the locking relationship between the positioning part 31 and the snap-fit ​​part 32 in the positioning component 3, the two can be quickly and stably connected, replacing the traditional bolt connection. While performing electromagnetic shielding and physical protection functions, it improves the disassembly and assembly efficiency and connection reliability of the shielding cover.

[0045] Specifically, the snap-fit ​​connection of the positioning component 3 requires no special tools. Operators can easily install and remove the shielding cover by simply reaching in and rotating it, solving the problem of difficult bolt installation and removal in the confined space of high-voltage equipment, meeting the needs of rapid maintenance, and shortening equipment operation and maintenance time. At the same time, the mechanical locking structure of the positioning component 31 and the snap-fit ​​component 32 has excellent vibration resistance, avoiding the defects of easy loosening of traditional bolt connections, ensuring long-term stable installation of the shielding cover, and maintaining the consistency of electromagnetic shielding performance.

[0046] In this application, the shielding cover body 2 includes, from the innermost layer to the outermost layer, a heat-absorbing layer, a heat-conducting layer, a shielding layer, a heat-dissipating layer, and a waterproof layer. The heat-absorbing layer, as the innermost layer of the shielding cover body 2, directly contacts the heat generated during the operation of the high-voltage electrical equipment. It can absorb the heat dissipated by the equipment, reducing heat accumulation inside the shielding cover and effectively lowering the local temperature inside. Typically, the heat-absorbing layer uses a material with high heat absorption performance, which can quickly capture heat from the surface of the equipment.

[0047] The heat-conducting layer efficiently and quickly transfers the heat absorbed by the heat-absorbing layer to the outer heat-dissipating layer, preventing heat buildup in the heat-absorbing layer and allowing the heat generated by the equipment to dissipate outwards in a timely manner. The heat-conducting layer is generally made of materials with high thermal conductivity to ensure unobstructed heat transfer paths. The shielding layer blocks the leakage of electromagnetic radiation generated during the operation of high-voltage electrical equipment, while also preventing external electromagnetic signals from interfering with internal equipment, ensuring electromagnetic compatibility of equipment operation, and protecting the health of operators. The shielding layer is often made of metallic materials with good electrical conductivity.

[0048] The heat dissipation layer receives heat transferred from the heat-conducting layer and dissipates it into the surrounding environment through contact with the outside air, completing the final heat dissipation and ensuring that the equipment operates within a safe temperature range, extending its service life. The heat dissipation layer typically employs a structure with a large surface area to enhance heat dissipation. The waterproof layer prevents external moisture, rainwater, and other liquids from entering the shielding enclosure, protecting the internal structural layers and electrical components from moisture. The waterproof layer uses materials with excellent waterproof properties, forming a waterproof barrier to ensure stable operation of the equipment even in humid environments.

[0049] Specifically, the heat-absorbing layer can be made of thermally conductive silicone to quickly absorb the heat of the equipment, the heat-conducting layer is a copper foil layer that conducts heat to the heat dissipation layer, the shielding layer is a metal braided mesh to shield electromagnetic interference, the heat dissipation layer is an aluminum heat dissipation fin to accelerate heat dissipation, and the waterproof layer is a polytetrafluoroethylene coating for waterproofing. All layers are bonded together with a high-temperature resistant insulating adhesive to form an efficient thermal management and protection system. The heat-absorbing layer is close to the surface of the equipment, and the outer surface of the waterproof layer is provided with a wear-resistant coating. This application is not limited to this.

[0050] refer to Figures 1-3 The shielding cover body 2 has a wire-passing hole 21 for threading wires, and the base 1 has a storage slot 11 for placing electrical components. The wire-passing hole 21 and the storage slot 11 are positioned correspondingly, and a sealing gasket is provided inside the wire-passing hole 21. The wire-passing hole 21 provides a dedicated channel for wires to pass through the inside of the shielding cover, enabling the connection between electrical components and external equipment. At the same time, the preset hole positions plan the wire routing, ensuring that the wires are arranged in a standardized and orderly manner, reducing problems such as wire tangling and wear, and ensuring normal power supply and signal transmission for the equipment. Usually, the size of the wire-passing hole 21 is adapted to the wire specification to ensure smooth wire threading.

[0051] The storage slot 11 is used to place and position electrical components, providing a stable installation space for them and fixing their position on the base 1 to prevent displacement due to vibration or other factors. The shape and size of the storage slot 11 match the electrical components, ensuring a close fit and reducing mutual interference between components. It also provides a clear operating reference for subsequent wire connections, facilitating precise connection of wires after they pass through the wire hole 21 to the components.

[0052] The sealing gasket is located between the wire and the inner wall of the wire hole 21. Its elasticity fills the gap between them, forming a seal that effectively prevents dust, moisture, and other impurities from entering the shielding enclosure through the wire hole 21, protecting electrical components from contamination and moisture damage. Simultaneously, it reduces electromagnetic radiation leakage from the gaps in the wire hole 21, maintaining the overall electromagnetic shielding performance of the shielding enclosure and ensuring that the shielding effect is not affected by the wiring. Sealing gaskets are typically made of materials with elasticity and aging resistance, such as rubber.

[0053] The corresponding arrangement of the wire hole 21 and the storage slot 11 allows the wires led out from the electrical components in the storage slot 11 to be accurately and conveniently passed into the wire hole 21, forming a standardized wiring path. This avoids wiring chaos caused by wires that are too long or too short, improves wiring efficiency and accuracy, and ensures that the wire connection is not affected by positional deviation after the shielding cover body 2 and the base 1 are installed, thus enhancing the overall structural coordination of the equipment.

[0054] The shielding cover body 2 has several heat dissipation holes 22 on both sides. The heat dissipation holes 22 are equipped with metal shielding mesh. The heat dissipation holes 22 provide an air circulation channel between the inside of the shielding cover and the external environment. The heat generated by the operation of the electrical equipment inside the shielding cover is dissipated to the external environment through air convection, which accelerates the heat dissipation and avoids the accumulation of heat inside the shielding cover, which leads to excessive temperature. This prevents the electrical components from degrading or being damaged due to high temperature, and improves the stability and service life of the equipment.

[0055] The metal shielding mesh utilizes the conductivity of metal to form an electromagnetic shielding barrier, blocking electromagnetic radiation leakage through the heat dissipation holes 22 while allowing air to pass through without affecting the heat dissipation function. This ensures that the shielding cover can dissipate heat in a timely manner while maintaining good electromagnetic protection. The metal shielding mesh is made of copper, which not only ensures air circulation and heat dissipation but also suppresses electromagnetic wave leakage through the heat dissipation holes 22 through the electromagnetic shielding effect of the metal mesh.

[0056] refer to Figure 4 The snap-fit ​​component 32 has a through hole 321 at its top, and elastic elements 322 on both sides. A snap-fit ​​gap is provided between the two elastic elements 322 for the positioning element 31 to pass through. A limiting piece 323 is provided at the end of the elastic element 322 away from the through hole 321 to limit the positioning element 31 and fix the base 1 and the shielding cover body 2. The through hole 321 provides a channel for the positioning element 31 to pass into the snap-fit ​​component 32, guiding the positioning element 31 to extend into the snap-fit ​​gap along a preset path, ensuring accurate initial docking position of the positioning element 31 and the snap-fit ​​component 32, and improving the convenience of installation. The diameter of the through hole 321 is adapted to the size of the positioning element 31 to ensure smooth insertion.

[0057] The elastic element 322 has elastic deformation capability. During the insertion of the positioning element 31, it can be stretched to widen the locking gap. After the positioning element 31 is in place, it returns to its original deformation and forms a clamping force on the positioning element 31. The elastic tension enhances the tightness of the connection between the positioning element 31 and the locking element 32. In other words, the elastic element 322 uses its elastic properties to achieve adaptive adjustment of the locking gap, which not only facilitates the insertion of the positioning element 31, but also provides a continuous clamping force after positioning to prevent the positioning element 31 from loosening, thus enhancing the stability of the connection. Compared with rigid structures, it is more adaptable to vibration environments.

[0058] The initial width of the locking gap is smaller than the critical dimensions of the positioning element 31. The elastic element 322 accommodates the positioning element 31 through deformation, forming an interference fit structure and providing a locking point for the positioning element 31. By utilizing the dimensional fit between the elastic element 322 and the positioning element 31, the positioning element 31 is firmly clamped after insertion, restricting the radial movement of the positioning element 31 and forming a reliable mechanical locking foundation, ensuring that the positioning assembly 3 is not easily separated without external force.

[0059] The limiting piece 323 is located at the end of the elastic member 322 away from the through hole 321 and extends outward from the snap-fit ​​gap. It is used to limit the axial movement of the positioning member 31. When the positioning member 31 is inserted into place and rotated, the limiting piece 323 and the end of the positioning member 31 form an axial abutment, preventing the positioning member 31 from coming out of the snap-fit ​​gap and preventing the positioning member 31 from axially moving away from the snap-fit ​​member 32 due to external forces such as vibration and impact. The radial clamping of the limiting piece 323 and the elastic member 322 forms a double fixation, which further improves the anti-loosening performance of the snap-fit ​​structure and ensures the stable connection between the base 1 and the shielding cover body 2.

[0060] refer to Figure 4 and Figure 5 The positioning component 31 has a rotating component 311 at its top. The rotating component 311 is sequentially connected to a connecting rod 312 and a limiting component 313. The connecting rod 312 can be extended and engaged between two elastic components 322 to allow the limiting component 313 to pass through and be engaged with the outside of the engaging component 32. The rotating component 311 serves as the force-applying component for the operator, facilitating the operator's grip and rotation of the positioning component 31. It transmits rotational force to the connecting rod 312 and the limiting component 313 below, controlling the overall rotation of the positioning component 31. This operation can be completed without special tools, meeting the need for immediate disassembly and assembly during rapid maintenance of high-voltage equipment and improving maintenance efficiency. The rotating component 311 can be circular or polygonal to improve grip comfort, making rotation operation more effortless and convenient, and facilitating precise control of the rotation angle of the positioning component 31.

[0061] During the insertion of the positioning member 31 into the snap-fit ​​member 32, the connecting rod 312 can open the two elastic members 322 and snap them together. The connecting rod 312 provides support and guidance for the limiting member 313 to exit the snap-fit ​​member 32, and at the same time transmits the rotational motion of the rotating member 311 to the limiting member 313. After the limiting member 313 follows the connecting rod 312 into the snap-fit ​​member 32, it changes position through the rotation of the rotating member 311, and finally exits and snaps to the outside of the snap-fit ​​member 32. It cooperates with the limiting piece 323 and other structures on the snap-fit ​​member 32 to form a mechanical lock, restricting the axial movement of the positioning member 31 and preventing the positioning member 31 from coming out of the snap-fit ​​member 32. This ensures the stability of the connection between the positioning member 31 and the snap-fit ​​member 32, thereby ensuring the reliable connection between the base 1 and the shielding cover body 2.

[0062] The thickness of the limiting member 313 is less than the snap-fit ​​gap, providing a structural foundation for the limiting member 313 to pass through the snap-fit ​​gap. This ensures that the limiting member 313 is unobstructed during the initial insertion stage and can smoothly pass through the snap-fit ​​gap to enter the designated position inside the snap-fit ​​member 32. This makes the installation operation of the positioning member 31 more convenient and efficient, reducing installation difficulties caused by size mismatch. The width of the limiting member 313 is greater than the snap-fit ​​gap. When the limiting member 313 passes through the snap-fit ​​gap and is rotated by the rotating member 311, its width direction intersects with the snap-fit ​​gap. The size difference forms a mechanical barrier, preventing the limiting member 313 from falling out of the snap-fit ​​gap in the opposite direction. This effectively prevents the positioning member 31 from accidentally falling off, ensuring the stability of the connection, enhancing the vibration resistance of the positioning assembly 3, and solving the problem of easy loosening in traditional bolt connections. The above-mentioned size difference setting allows the limiting member 313 to play different roles in the installation and locking stages, realizing the orderly conversion of functions, ensuring the precise and reliable cooperation between the positioning member 31 and the snap-fit ​​member 32, ensuring consistency in each installation, and maintaining the stability of electromagnetic shielding performance.

[0063] The connecting rod 312 includes a first rod 3121, a second rod 3122, and a third rod 3123 connected in sequence. The other end of the first rod 3121 is connected to the rotating member 311, and the other end of the third rod 3123 is connected to the limiting member 313. The first rod 3121 passes through the mounting hole 12, and the second rod 3122 passes between the two elastic members 322. In its natural state, the diameter of the second rod 3122 is larger than the snap-fit ​​gap. During the insertion of the second rod 3122, the two elastic members 322 can be opened up. The inner sidewalls of the two elastic members 322 are clamped on the third rod 3123. The limiting member 313 is located on the side of the third rod 3123 away from the rotating member 311, and the limiting member 313 and the limiting piece 323 abut against each other in the axial direction.

[0064] The first member 3121 provides axial positioning and support for the entire connecting rod 312, ensuring that the connecting rod 312 maintains stable coaxiality during insertion and rotation, and smoothly transmits the rotational force of the rotating member 311 to the second member 3122 and the third member 3123, providing a stable foundation for the subsequent opening and clamping actions of the elastic member 322.

[0065] The diameter of the second rod 3122 is larger than the snap-fit ​​gap in the natural state of the elastic member 322. During the insertion process, the size difference is used to open the elastic member 322 to provide a channel for the insertion of the connecting rod 312. At the same time, the elastic member 322 stores elastic potential energy to provide a continuous clamping force for the subsequent clamping of the third rod 3123, ensuring a tight fit between the connecting rod 312 and the snap-fit ​​member 32 and enhancing the stability of the connection.

[0066] After being inserted into place, the third rod 3123 is clamped by the inner walls of the two elastic members 322, converting the clamping force of the elastic members 322 into an axial fixing force on the connecting rod 312, restricting the axial movement of the connecting rod 312. This, combined with the action of the second rod 3122 opening the elastic members 322, forms a double fixation, keeping the position of the connecting rod 312 stable within the snap-fit ​​member 32. At the same time, the third rod 3123 provides installation support for the limiting member 313, ensuring the axial contact between the limiting member 313 and the limiting piece 323, further enhancing the anti-loosening performance of the positioning assembly 3.

[0067] The third rod 3123 is spirally arranged at one end near the limiting member 313. When the inner wall of the elastic member 322 clamps this part, the spiral arrangement can increase the contact area and friction between the third rod 3123 and the elastic member 322, and at the same time form a mechanical engagement in the axial direction, further restricting the axial movement and circumferential rotation of the third rod 3123 under the clamping of the elastic member 322, making the connection between the third rod 3123 and the elastic member 322 tighter and more secure, and it is not easy for relative displacement to occur even in a vibration environment, thus enhancing the anti-loosening performance of the positioning component 3.

[0068] The implementation process of a high-voltage electrical equipment shielding cover with positioning buckles according to an embodiment of this application is as follows:

[0069] During installation, align the shield body 2 with the base 1, so that the positioning parts 31 on both sides of the shield body 2 correspond one-to-one with the snap-fit ​​parts 32 on the base 1, and ensure that the connecting rod 312 of the positioning part 31 is aligned with the through hole 321 of the snap-fit ​​part 32.

[0070] Pushing the shield body 2 causes the first rod 3121 of the positioning member 31 to pass through the mounting hole 12 of the base 1, and the second rod 3122 subsequently enters the snap-fit ​​gap of the snap-fit ​​member 32. Since the diameter of the second rod 3122 is larger than the snap-fit ​​gap in its natural state, it will spread open the elastic members 322 on both sides during insertion, causing the elastic members 322 to undergo elastic deformation and store clamping force. When the third rod 3123 is fully inserted into the snap-fit ​​gap and the limiting member 313 passes through the snap-fit ​​member 32, rotate the rotating member 311 at the top of the positioning member 31. After the limiting member 313 rotates 90° with the connecting rod 312, its width direction is perpendicular to the snap-fit ​​gap. Because its width is larger than the snap-fit ​​gap, it cannot pass through in the opposite direction, forming a mechanical lock. At this time, the inner wall of the elastic member 322 tightly clamps the spiral portion of the third rod 3123, and the limiting member 313 and the limiting piece 323 of the snap-fit ​​member 32 abut against each other in the axial direction.

[0071] Repeat the above operations to complete the installation of all positioning components 3. The shielding cover body 2 is firmly connected to the base 1 through the multi-dimensional fixing structure of the positioning component 31 and the snap-fit ​​component 32, realizing the closed state of electromagnetic shielding and physical protection.

[0072] During disassembly, rotate the rotating part 311 in the opposite direction to make the limiting part 313 rotate until its width direction is parallel to the snap-fit ​​gap. At this time, the thickness of the limiting part 313 is less than the snap-fit ​​gap, and the axial locking state is released. Pull the shield body 2 outward, and the connecting rod 312 of the positioning part 31 will drive the limiting part 313 to be pulled out of the snap-fit ​​gap. The elastic part 322 will return to its natural state after losing external force, and the snap-fit ​​gap will be reset. After all the positioning parts 31 of the positioning components 3 have been disengaged from the snap-fit ​​parts 32, the shield body 2 and the base 1 are completely separated, and the internal electrical components can be inspected or maintained.

[0073] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A shielding cover for high-voltage electrical equipment with positioning buckles, characterized in that: It includes a base (1) and a shield body (2) that can be detachably installed on the base (1). Several positioning components (3) are provided on both sides of the base (1) to connect the base (1) and the shield body (2). The positioning component (3) includes a positioning element (31) and a snap-fit ​​element (32). The base (1) has mounting holes (12) and rotating grooves (13) on both sides. The mounting holes (12) are connected to the rotating grooves (13). The mounting holes (12) are located on the base (1) near the shield body (2). The snap-fit ​​element (32) is installed on the mounting holes (12) and extends into the rotating grooves (13). The positioning elements (31) are installed on both sides of the shield body (2). The positioning elements (31) and the snap-fit ​​elements (32) are arranged in a one-to-one correspondence. The positioning elements (31) extend into and out of the snap-fit ​​elements (32). By rotating the positioning elements (31), the end of the positioning elements (31) is snapped onto the outside of the snap-fit ​​elements (32).

2. The high-voltage electrical equipment shielding cover with positioning buckle according to claim 1, characterized in that: The snap-fit ​​component (32) has a through hole (321) at the top, and elastic components (322) are provided on both sides of the snap-fit ​​component (322). A snap-fit ​​gap is provided between the two elastic components (322) through which the positioning component (31) passes. A limiting piece (323) for limiting the positioning component (31) is provided at the end of the elastic component (322) away from the through hole (321) to fix the base (1) and the shield body (2).

3. The high-voltage electrical equipment shielding cover with positioning buckle according to claim 2, characterized in that: The top of the positioning member (31) is provided with a rotating member (311), and the rotating member (311) is connected in sequence with a connecting rod (312) and a limiting member (313). The connecting rod (312) can be opened and locked between the two elastic members (322) to allow the limiting member (313) to pass through and be locked to the outside of the locking member (32).

4. The high-voltage electrical equipment shielding cover with positioning buckle according to claim 3, characterized in that: The thickness of the limiting member (313) is less than the snap-fit ​​gap, and the width of the limiting member (313) is greater than the snap-fit ​​gap.

5. The high-voltage electrical equipment shielding cover with positioning buckle according to claim 3, characterized in that: The connecting rod (312) includes a first rod (3121), a second rod (3122), and a third rod (3123) connected in sequence. The other end of the first rod (3121) is connected to the rotating member (311), and the other end of the third rod (3123) is connected to the limiting member (313). The first rod (3121) passes through the mounting hole (12), and the second rod (3122) passes between the two elastic members (322). In its natural state, the diameter of the second rod (3122) is larger than the snap-fit ​​gap. During the insertion of the second rod (3122), the two elastic elements (322) can be spread apart. The inner sidewalls of the two elastic elements (322) are clamped on the third rod (3123). The limiting member (313) is located on the side of the third rod (3123) away from the rotating member (311), and the limiting member (313) and the limiting piece (323) abut against each other in the axial direction.

6. The high-voltage electrical equipment shielding cover with positioning buckle according to claim 5, characterized in that: The third rod (3123) is spirally arranged at one end near the limiting member (313).

7. The high-voltage electrical equipment shielding cover with positioning buckle according to claim 1, characterized in that: The shield body (2) includes a heat-absorbing layer, a heat-conducting layer, a shielding layer, a heat-dissipating layer and a waterproof layer arranged sequentially from the inner layer to the outer layer.

8. The high-voltage electrical equipment shielding cover with positioning buckle according to claim 1, characterized in that: The shield body (2) has a wire hole (21) for threading wires, and the base (1) has a storage slot (11) for placing electrical components. The wire hole (21) and the storage slot (11) are positioned correspondingly, and a sealing gasket is provided in the wire hole (21).

9. The high-voltage electrical equipment shielding cover with positioning buckle according to claim 1, characterized in that: The shielding cover body (2) has several heat dissipation holes (22) on both sides, and a metal shielding mesh is provided inside the heat dissipation holes (22).

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