An electrical device

Abstract

The utility model provides a kind of electrical equipment, it is related to new energy technology field.Electrical equipment includes transformer room, transformer room includes door panel and door frame, door panel is connected in door frame by interlocking structure, interlocking structure includes first locking mechanism and second locking mechanism.First locking mechanism includes lock seat, padlock and insert piece.Insert piece is connected in lock seat by pluggable, insert piece is connected in door frame by padlock, when insert piece is in locking position, insert piece is inserted in lock seat, when insert piece is in unlocking position, insert piece is separated from lock seat;Second locking mechanism includes second lock box, driving element connected in second lock box and lock bolt driven by driving element;Second lock box is installed in door panel;When door panel and door frame are locked, insert piece is in locking position, lock bolt and insert piece are locked.Equipped with standardization module design for lock seat and lock box, reduce the complexity of part processing, improve the visual unity of overall structure simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of new energy technology, and more specifically, to an electrical device. Background Technology

[0002] Common outdoor electrical equipment, such as containerized medium-voltage grid-connected photovoltaic inverters, typically has metal mesh doors in its transformer room and switchgear units to facilitate heat dissipation and observation of the internal conditions. To ensure operational safety and prevent accidental entry into energized areas, these mesh doors must be equipped with reliable interlocking devices. Currently, a commonly used interlocking method in the industry is a "bolt + chain lock" structure. Specifically, this structure involves installing an irregularly shaped metal bolt as a latch on the mesh door, supplemented by a chain and a padlock. When the door is closed, the operator must manually insert the bolt into the corresponding hole on the door frame, and then use the chain lock to lock the bolt to the door or door frame, thus achieving physical locking and interlocking functions.

[0003] However, this existing "pin + chain lock" interlocking structure has some drawbacks, such as the risk of accidental opening due to padlock failure, resulting in low security performance. Utility Model Content

[0004] The purpose of this utility model application is to provide an electrical device to improve the safety performance and enhance the structural reliability of electrical equipment.

[0005] To address the aforementioned problems, this utility model provides an electrical device, including a transformer room. The transformer room includes a door panel and a door frame. The door panel is connected to the door frame via an interlocking structure, which includes: The first locking mechanism includes a lock base, a chain, and a insert. The lock base is mounted on the door panel, and the insert is detachably connected to the lock base. The insert is connected to the door frame via the chain. When the insert is in the locked position, it is inserted into the lock base; when the insert is in the unlocked position, it is disengaged from the lock base. The second locking mechanism includes a second lock box, a drive unit connected to the second lock box, and a bolt driven by the drive unit; the second lock box is installed on the door panel; when the door panel and the door frame are locked, the insert is in the locked position, and the bolt is locked to the insert; when the insert is in the unlocked position, the drive unit can drive the bolt to move to disengage from the insert, and the door panel and the door frame are unlocked.

[0006] The beneficial effects of the electrical equipment of this utility model are: When the door is closed, the operator inserts the insert into the lock seat. At this time, the end of the insert extends into the movement trajectory area of ​​the bolt of the second locking mechanism. When attempting to retract the bolt via the drive mechanism, the bolt locks with the insert, preventing the bolt from continuing to move, reducing the risk of accidental opening, and ensuring the reliability of the door's locked state. The mechanical interference design between the insert and the bolt does not rely on the separate action of external locks, reducing maintenance costs.

[0007] In some embodiments, the second locking mechanism further includes a latch baffle, which is mounted on the door frame; when the door panel is locked to the door frame, the latch baffle limits the latch.

[0008] In some embodiments, when the insert is in the locked position, at least a portion of its structure is located in the movement path of the latch to block the movement of the latch.

[0009] In some embodiments, the movement of the latch is a rotational movement; the insert limits the latch by blocking its rotational path.

[0010] In some embodiments, a limiting groove is provided on the insert; when the door panel and door frame are locked, at least a portion of the latch is located in the limiting groove; and / or, a limiting groove is provided on the latch, and when the door panel and door frame are locked, at least a portion of the insert is located in the limiting groove.

[0011] In some embodiments, the movement of the latch is a translational movement; the insert blocks the translation of the latch to prevent the latch from moving.

[0012] In some embodiments, the lock base includes a first lock box and a first lock body; the first lock box is mounted on the door panel by a fastener; the first lock body is connected to the first lock box; when the insert is in the locked position, the insert engages with the first lock body.

[0013] In some embodiments, the second locking mechanism further includes an internal padlock for locking the drive element when the door panel is locked to the door frame.

[0014] In some embodiments, a first cover plate and a second cover plate are also included; the first cover plate is closable and covers the lock seat of the first locking mechanism, and the second cover plate is closable and covers the second lock box of the second locking mechanism.

[0015] In some embodiments, when the door frame and door panel are locked, both the first locking mechanism and the second locking mechanism are located on the side of the door panel facing the electrical equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the interlocking structure in the electrical equipment according to an embodiment of the present utility model; Figure 2 This is a front view of the interlocking structure when the first and second cover plates are open. Figure 3 This is a schematic diagram of the reverse structure of the first and second cover plates in the interlocking structure when they are opened. Figure 4 This is a schematic diagram showing the position and layout of the bolt when it contacts the bolt baffle in an interlocking structure. Figure 5 This is a schematic diagram of the bolt, bolt baffle, and insert plate when the bolt contacts the bolt baffle in an interlocking structure. Figure 6 This is a front view of the interlocking structure when the insert is in the unlocked position. Figure 7 This is a schematic diagram of the reverse side of the interlocking structure when the insert is in the unlocked position. Figure 8 This is a schematic diagram of the front structure of the interlocking structure after the internal padlock is unlocked. Figure 9 This is a schematic diagram of the reverse side of the interlocking structure after the internal padlock is unlocked. Figure 10 This is a schematic diagram of the bolt in the open position in an interlocking structure at an angle. Figure 11 This is a schematic diagram of the interlocking structure with the bolt in the open position from another angle. Explanation of reference numerals in the attached figures: 1. Door panel; 2. Door lock hinge; 3. First locking mechanism; 4. Door frame; 5. Second locking mechanism; 6. Cover plate hinge; 7. First cover plate; 8. Door catch; 9. Second cover plate; 10. Drive component; 11. Internal padlock; 12. Chain; 13. Fixing component; 14. Second lock box; 15. Lock tongue baffle; 16. Lock tongue; 17. First lock box; 18. Lock seat; 19. Insert plate. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0018] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0019] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0020] like Figure 1-11 As shown in the figure, an electrical device provided by this utility model includes a transformer room; the transformer room includes a door panel 1 and a door frame 4, the door panel 1 being connected to the door frame 4 via an interlocking structure; the interlocking structure includes a first locking mechanism 3 and a second locking mechanism 5; the first locking mechanism 3 includes a lock seat 18, a chain 12, and a insert 19; the lock seat 18 is installed on the door panel 1, the insert 19 is pluggably connected to the lock seat 18, and the insert 19 is connected to the door frame 4 via the chain 12; when the insert 19 is in the locked position, the insert 19 is inserted into the lock seat. Within 18; when the insert 19 is in the unlocked position, the insert 19 disengages from within the lock seat 18; the second locking mechanism 5 includes a second lock box 14, a drive member 10 connected within the second lock box 14, and a bolt 16 driven by the drive member 10; the second lock box 14 is installed on the door panel 1; when the door panel 1 is locked to the door frame 4, the insert 19 is in the locked position, and the bolt 16 is locked to the insert 19; when the insert 19 is in the unlocked position, the drive member 10 can drive the bolt 16 to move to disengage from the insert 19, and the door panel 1 is unlocked from the door frame 4.

[0021] The drive component 10 can be designed as a handle with a keyhole, which moves the bolt. The lock base 18 is a metal base fixed to the door panel 1, which can be achieved by welding or bolting, and is used to support the insertion and removal of the insert 19. The insert 19 is a metal component with a specific cross-section, which can be rectangular or L-shaped, and forms a rigid support after being inserted into the lock base 18. The bolt 16 is a movable part driven by the drive component 10, which can be achieved by a rotating shaft or a sliding rail structure, and its movement path is related to the position of the insert 19. The chain 12 is a flexible connector used to connect the insert 19 to the door frame 4, which can be a chain 12 formed by a series of metal links, and its length is sufficient to allow the insert 19 to hang on the side of the door frame 4 when in the unlocked position. Through the fixing effect of the chain, the insert 19 remains connected to the door frame 4 in the unlocked state, preventing it from being lost due to careless placement.

[0022] Specifically, the operator can insert the insert 19 into the lock seat 18. At this time, the end of the insert 19 extends into the movement trajectory area of ​​the bolt 16 of the second locking mechanism 5. The insert 19 and the lock seat 18 are kept locked by friction or a positioning pin. When attempting to drive the bolt 16 to retract via the drive member 10, the rotation axis or translational end of the bolt 16 contacts the insert 19, and the insert 19 prevents the bolt 16 from continuing to move, thereby preventing the bolt 16 from disengaging. Furthermore, this embodiment can form a series protection through a double locking mechanism. After the bolt 16 is in place, its position is maintained by the insert 19 until the insert 19 is pulled out to the unlocked position.

[0023] Compared to existing technologies, conventional latch structures rely on a single lock and have exposed parts. This embodiment integrates the locking mechanism inside the door body, achieving dual locking through the linkage of the insert 19 and the bolt 16. The insert 19 acts as a physical barrier for the main bolt 16, eliminating the risk of accidental opening due to padlock failure. Simultaneously, the lock base 18 and lock box adopt a standardized modular design, reducing the complexity of parts processing and improving the overall visual uniformity of the structure.

[0024] It should be further explained that the lock base 18 includes a lock box and a lock cylinder body. The connection method between the lock box and the lock cylinder body is not limited and can be selected according to the actual use scenario. For example, in one embodiment, the lock box can be installed on the door panel 1 by bolts (removable), welding (non-removable), or other means. The lock cylinder body is installed on the outer wall of the lock box by the cooperation of the connecting bracket (or connecting washer) and bolts. The lock cylinder body is used to cooperate with the insert 19. In another embodiment, the lock cylinder body can be integrated into the lock box, thereby reducing space occupation.

[0025] In some embodiments, the second locking mechanism 5 further includes a latch baffle 15, which is mounted on the door frame 4; when the door panel 1 is locked to the door frame 4, the latch baffle 15 limits the latch 16.

[0026] In this embodiment, the locking method between the latch baffle 15 and the latch 16 on the door frame 4 can be mutual abutment, that is, when in the locked position, the latch baffle 15 and the latch 16 are in contact with each other, thereby playing a limiting role; of course, in some embodiments, the latch baffle 15 can also be provided with a groove that matches the latch 16. When the door panel 1 is closed, the latch 16 extends into the groove of the latch baffle 15 to form an interlock, thereby locking the door panel 1 and the door frame 4 relative to each other.

[0027] It should be noted that the latch baffle 15 is a blocking component fixed to the door frame. When the door panel 1 and the door frame 4 are locked, it prevents the latch 16 from rotating along the rotation axis of the door panel 1. Specifically, it can be a plate-like structure that achieves its function by fitting against the side wall of the latch 16.

[0028] In some embodiments, when the insert 19 is in the locked position, at least a portion of its structure is located in the movement path of the latch 16 to block the movement of the latch 16.

[0029] The locked position refers to the state where the insert 19 is fully inserted into the lock seat 18. This can be achieved by providing a protruding structure at the end of the insert 19, which engages with the groove within the lock seat 18. This position provides a stable physical barrier for the insert 19. The movement path refers to the trajectory of the bolt 16 as it disengages from the bolt stop 15. This can be determined by the rotation axis or translation track of the bolt 16. The blocking effect of the insert 19 along this path prevents the bolt 16 from disengaging from the door frame 4.

[0030] Specifically, after the insert 19 is inserted into the lock seat 18, its end extends into the movement trajectory range of the latch 16. When the operator attempts to drive the latch 16 via the drive component 10, the rotation axis or translation component of the latch 16 will come into contact with the insert 19. Since the insert 19 is in a fixed state, the movement of the latch 16 is directly restricted, thereby maintaining the locked state of the door frame 4 and the door panel 1. For example, when the latch 16 is in a rotational movement, the insert 19 can be positioned within the rotation radius of the latch 16's rotation axis; when the latch 16 is in a translational movement, the insert 19 can be arranged perpendicular to the sliding direction of the latch 16. This embodiment forms a double locking mechanism through the physical interference of the movement paths of the insert 19 and the latch 16, avoiding accidental unlocking caused by loosening of the chain 12 or external impact, ensuring the reliability of the interlocking structure, and preventing the latch 16 from being accidentally unlocked when the insert 19 is not fully pulled out. Meanwhile, the direct contact blocking method between the insert 19 and the latch 16 does not require additional constraints from external locks, simplifying the structural complexity and allowing the interlocking device to have a more regular appearance while maintaining its functionality.

[0031] In some embodiments, the movement of the latch 16 is a rotational movement, and the insert 19 limits the latch 16 by blocking its rotational path.

[0032] Among them, rotational motion refers to the movement of the latch 16 around a fixed axis by changing its angle. Specifically, it can be achieved by using a hinged connection structure, such as setting a pivot in the middle of the latch 16 so that it can rotate around the axis within the second lock box 14.

[0033] Specifically, when the insert 19 is in the locked position, its end extends into the space near the rotation axis of the latch 16. When the latch 16 attempts to rotate away from the latch baffle 15 under the drive of the drive member 10, it comes into contact with the insert 19. This physical contact creates rigid interference, preventing the latch 16 from continuing to rotate, thus maintaining its original position. This embodiment establishes a more reliable mechanical interlocking mechanism through the direct contact between the insert 19 and the latch 16, preventing the latch 16 from accidentally disengaging from the latch baffle 15 due to external force or misoperation. At the same time, the range of motion of the rotating component can be precisely limited inside the second lock box 14, reducing the externally visible mechanical structure and improving the overall neatness of the device's appearance.

[0034] In some embodiments, the second locking mechanism 5 is specifically implemented as a commonly used industrial transformer substation lock. Please refer to the attached diagram. Figure 1-3 The transformer substation lock includes a drive unit 10 and a latch 16. The user drives the entire mechanism by rotating the drive unit 10. The latch 16 is a typical rotary latch. As it rotates with the drive unit 10, its eccentric structure enables it to extend and disengage.

[0035] In some embodiments, a limiting groove is provided on the insert 19; when the door panel 1 and the door frame 4 are locked, at least a portion of the latch 16 is located in the limiting groove; and / or, a limiting groove is provided on the latch 16, and when the door panel 1 and the door frame 4 are locked, at least a portion of the insert 19 is located in the limiting groove.

[0036] The limiting groove refers to a recessed structure provided on the insert 19 or the latch 16, which can be achieved by stamping or cutting processes, and is used to accommodate a specific part of the latch 16 or the insert 19. The latch 16 being located within the limiting groove means that after the insert 19 is inserted into the lock seat 18, the end or part of the structure of the latch 16 is restricted within the contour range of the limiting groove, thus preventing it from leaving that area. Similarly, the insert 19 being located within the limiting groove means that after the insert 19 is inserted into the lock seat 18, part of the structure of the insert 19 is located within the contour range of the limiting groove of the latch 16, thus preventing it from leaving that area.

[0037] Specifically, taking the limiting groove within the latch 16 as an example, the insert 19 forms a geometric fit with the latch 16 through the limiting groove. When the insert 19 is pushed into the locked position of the lock seat 18, the rotation axis or linkage of the latch 16 is embedded in the limiting groove. Because the sidewall of the limiting groove physically obstructs the rotation or translation path of the latch 16, the latch 16 cannot disengage from the latch baffle 15. For example, when the latch 16 moves in a rotational manner, the depth and width of the limiting groove can be designed to cover the critical area of ​​the latch 16's rotation trajectory; when the latch 16 moves in a translational manner, the opening direction of the limiting groove is perpendicular to the movement direction of the latch 16, thereby directly blocking its retraction path.

[0038] Compared to existing technologies, traditional pin structures restrict the movement of the latch 16 through simple planar contact, making it prone to displacement due to vibration or external forces. In contrast, the limiting groove, through geometric containment, restricts the movement of the latch 16 within a fixed area, ensuring a stable locked state even under external impact. This effectively prevents the latch 16 from disengaging from its locked position due to accidental force, enhancing the anti-interference capability of the interlocking structure. The mechanical constraint of the limiting groove ensures a more precise fit between the latch 16 and the insert 19, avoiding locking failures caused by machining errors or assembly deviations in traditional pins. It also simplifies operation, achieving reliable locking without additional adjustments.

[0039] In some embodiments, the movement of the latch 16 is a translational movement; the insert 19 blocks the translational path of the latch 16 to prevent the latch 16 from moving.

[0040] Translational motion refers to the horizontal or vertical movement of the latch 16 along a straight trajectory, which can be achieved using slide rails, guide grooves, or linear bearings. The movement path of the latch 16 is restricted to a single direction. The translational path refers to the physical space range traversed by the latch 16 during translation, which can be limited by the guide structure set inside the lock box. The blocking position of the insert 19 must coincide with this path.

[0041] Specifically, when the insert 19 is in the locked position, its front end is inserted laterally into the lock box, directly in front of the translational path of the latch 16. After the latch 16 is translated to engage with the latch baffle 15, its front end overlaps with the insert 19. When an external operator attempts to retract the latch 16 using the drive unit 10, the insert 19 directly blocks the movement direction of the latch 16, preventing the latch 16 from disengaging from the latch baffle 15 on the door frame 4. For example, the front end of the insert 19 can be designed as a plate-like structure with a groove. When the latch 16 is in the latched position, the front end of the latch 16 is embedded in the groove, at which point the contact surfaces of the insert 19 and the latch 16 form a mechanical interlock. In this embodiment, the path interference between the insert 19 and the translational latch 16 directly couples the interlocking action with the movement of the latch 16, avoiding the risk of interlocking failure due to loose pins or deformation of the chain 12. Furthermore, the guide structure of the sliding bolt 16 can be hidden inside the lock box, with only the drive component 10 and the insert 19 exposed externally, resulting in a simpler overall structure. By interfering with the path of the sliding bolt 16 and the insert 19, it is ensured that the bolt 16 cannot be displaced in the locked state, while simplifying the complexity of externally visible components and improving the overall stability and appearance consistency of the interlocking device.

[0042] In some embodiments, the lock base 18 includes a first lock box 17 and a first lock body; the first lock box 17 is mounted on the door panel 1 by a fastener 13; the first lock body is connected to the first lock box 17; when the insert 19 is in the locked position, the insert 19 cooperates with the first lock body.

[0043] The first lock box 17 refers to the housing structure used to support the first lock body and fix it to the door panel 1. Specifically, it can be made of metal sheet stamping and then fixed to the door panel 1 by bolts or welding. Its function is to provide a stable mounting base for the first lock body. The first lock body refers to the core component that forms a mating relationship with the insert 19. Specifically, it can be a metal block with a guide groove or snap-fit ​​structure, fixed inside the first lock box 17 by screws or riveting. Its function is to switch between locking and unlocking states through physical contact with the insert 19. The fastener 13 refers to the connecting component used to fix the first lock box 17 to the door panel 1. Specifically, it can be bolts, rivets, or welding points. Its function is to ensure the positional accuracy and impact resistance of the first lock box 17 on the door panel 1 through rigid connection.

[0044] Specifically, the first lock box 17 is pre-installed in a preset position on the door panel 1 via the fastener 13, and the first lock body is integrated inside the first lock box 17 via a mechanical connection. When the insert 19 is inserted into the first lock box 17 and reaches the locking position, the end or side of the insert 19 forms physical contact with the guide groove or snap-fit ​​structure of the first lock body, thereby limiting the axial or radial displacement of the insert 19. This split structure allows the overall installation accuracy of the lock base 18 to be calibrated by adjusting the relative position of the first lock box 17 and the door panel 1. At the same time, the mating surfaces of the first lock body and the insert 19 can be independently machined to improve surface flatness, avoiding deformation of the mating surfaces caused by integral casting or stamping. This embodiment, by decomposing the lock base 18 into the independently installable first lock box 17 and the first lock body, not only reduces the processing difficulty of individual components, but also eliminates accumulated errors through split assembly, thereby improving the contact stability of the mating surfaces of the insert 19 and the lock body. The problem of wobbling of the insert 19 and locking failure caused by the rough structure of the lock seat 18 in the existing interlocking device has been solved. The design of the split lock seat 18 improves the fitting accuracy between the insert 19 and the lock body, while reducing the overall processing cost of the lock seat 18, so that the interlocking structure can maintain stable mechanical performance in long-term use.

[0045] In some embodiments, the second locking mechanism 5 further includes an internal padlock 11, which is used to lock the drive member 10 when the door panel 1 is locked to the door frame 4.

[0046] The internal padlock 11 refers to a lock fixed inside the second locking mechanism 5. Specifically, it can be implemented by a metal lock body with a keyhole and a lock tongue 16 that can be inserted into the keyhole. Its function is to prevent the drive member 10 from being accidentally operated by locking the degree of freedom of movement of the drive member 10.

[0047] Specifically, when the latch 16 moves to engage with the latch baffle 15, the linkage structure between the drive component of the drive member 10 and the latch 16 is fixed. At this time, the latch 16 of the internal padlock 11 can be inserted into the corresponding lock hole of the drive member 10, preventing the drive member 10 from being pulled or rotated. For example, the drive member 10 can be designed as a rotating handle with a lock hole. When the latch 16 engages with the latch baffle 15, the lock hole aligns with the latch 16 of the internal padlock 11, and the padlock closing at this time prevents the drive member 10 from rotating. Thus, the latch 16 cannot disengage from the latch baffle 15, and the locking state between the door panel 1 and the door frame 4 is doubly protected. This embodiment integrates a padlock inside the second locking mechanism 5, directly associating the locking function with the drive component, thereby preventing the externally exposed chain or bolt from being tampered with. It realizes the control of the operation permission of the drive member 10, and the internal padlock 11 can effectively prevent the drive member 10 from being operated by unauthorized personnel, thereby preventing the latch 16 from accidentally disengaging from the latch baffle 15 and causing the door panel 1 to unlock. Meanwhile, the concealed design of the internal padlock 11 avoids the impact of external chains or padlocks on the appearance of the equipment.

[0048] In some embodiments, a first cover plate 7 and a second cover plate 9 are also included; the first cover plate 7 is closable and covers the lock seat 18 of the first locking mechanism 3, and the second cover plate 9 is closable and covers the second lock box 14 of the second locking mechanism 5.

[0049] The first cover plate 7 is a protective component covering the outside of the lock base 18. It can be implemented as a metal plate connected by a cover plate hinge 6. When closed, it completely covers the insertion port of the insert 19 of the lock base 18, preventing foreign objects from entering the interior of the lock base 18. The second cover plate 9 is a protective component covering the outside of the second lock box 14. It can be implemented as a sliding rail type engineering plastic plate. When closed, it forms a sealed structure with the second lock box 14 to prevent dust from entering the transmission mechanism of the lock tongue 16.

[0050] Specifically, the first cover plate 7 is hinged to the surface of the door panel 1. When the insert 19 needs to be operated, it can be flipped outward to expose the lock seat 18. The second cover plate 9 is embedded in the mounting groove of the second lock box 14 via a slide rail. Before operating the drive component 10, the cover plate needs to be pushed open along the slide rail. When the door is closed, both covers are in the closed position, so that the insertion part of the lock seat 18 and the drive component of the latch 16 of the second lock box 14 are completely covered.

[0051] In some specific embodiments, the first cover plate 7 can be designed as a push-to-open structure, which is held in place by a magnetic attraction device when closed; the second cover plate 9 can be equipped with an observation window made of transparent acrylic material, which facilitates observation of the position of the bolt 16 without opening the cover plate. This embodiment, by adding an openable cover plate structure, hides the mechanical components of the lock base 18 and the lock box inside the protective cover plate, which not only eliminates the visual clutter caused by exposed parts, but also effectively improves the dustproof performance of the interlocking mechanism.

[0052] In some embodiments, a door catch 8 is provided between the first cover plate 7 and the lock seat 18, and between the second cover plate 9 and the second lock box 14.

[0053] Specifically, a first door catch 8 is provided on the first cover plate 7 or the lock seat 18. Correspondingly, a metal suction plate or another part of the door catch 8 structure that cooperates with the first door catch 8 is provided on another component. When the first cover plate 7 is closed, the door catch 8 will adhere to and fix it, ensuring that the first cover plate 7 will not pop open on its own when subjected to slight vibration or wind, thus maintaining the clean appearance of the door panel 1.

[0054] Similarly, the second cover plate 9 and the second lock box 14 operate on the same principle to ensure the stability of the transformer lock cover (second cover plate 9) in the closed state.

[0055] By incorporating a door catch 8, operators can easily open the cover by hand without tools, significantly simplifying maintenance and operation compared to using screws. This eliminates the need for protruding knobs or screws on the outside of the cover, resulting in a smoother and more aesthetically pleasing outer surface of the door panel 1. The door catch 8 provides clear feedback when closing the cover, enhancing the premium feel of the user experience. Furthermore, the door catch 8 provides adequate holding force, effectively preventing the cover from accidentally opening due to vibrations during equipment transport or outdoor winds, thus better protecting the internal locking components.

[0056] In some embodiments, when the door frame 4 and the door panel 1 are locked, both the first locking mechanism 3 and the second locking mechanism 5 are located on the side of the door panel 1 facing the electrical equipment.

[0057] This layout allows the outer surface of door panel 1 to remain flat and clean, concealing all functional locks within the inner wall of door panel 1. This significantly enhances the product's appearance and professionalism, while also protecting the locks from dust and accidental impacts. Compared to existing technologies, where bolts and chain locks are directly exposed on the outside of the mesh door, affecting the device's appearance and posing a risk of malicious damage, this solution completely integrates the locking mechanism, eliminating the visual abruptness of exposed parts and enhancing anti-vandalism capabilities through physical isolation.

[0058] Please combine Figure 1-11 In this embodiment, when the interlocking structure is opened, the first cover plate 7 is first opened, the first locking mechanism 3 is unlocked, and the insert 19 is removed. The working condition at this time is as follows: Figure 6-7 As shown. Then open the second cover 9, unlock the internal padlock 11, and pull open the drive unit 10. The working condition at this time is as follows. Figure 8-9 As shown. Finally, rotating the drive unit 10 will cause the latch 16 to rotate, thus opening the door panel 1, as shown. Figure 10-11 As shown.

[0059] In the interlocked state, to open the gate, the first locking mechanism 3 must be opened first, the chain lock insert 19 pulled out, the internal padlock 11 opened, and the drive component 10 turned counterclockwise (in the initial state of the interlock, the transformer substation lock drive component 10 can only rotate counterclockwise) to open the gate. If only the internal padlock 11 is opened, the bolt 16 of the transformer substation lock will be blocked by the chain lock insert 19, preventing the transformer substation lock drive component 10 from rotating and thus preventing the gate from opening. At the same time, the chain 12 connected to the chain lock insert 19 will also block the door panel 1, preventing the gate from opening either.

[0060] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. An electrical device, characterized in that, The transformer room includes a door panel (1) and a door frame (4). The door panel (1) is connected to the door frame by an interlocking structure, which includes: The first locking mechanism (3) includes a lock base (18), a chain (12), and a insert (19). The lock base (18) is installed on the door panel (1). The insert (19) is pluggably connected to the lock base (18). The insert (19) is connected to the door frame (4) via the chain (12). When the insert (19) is in the locked position, it is inserted into the lock base (18). When the insert (19) is in the unlocked position, it is disengaged from the lock base (18). The second locking mechanism (5) includes a second lock box (14), a drive member (10) connected to the second lock box (14), and a latch (16) driven by the drive member (10). The second lock box (14) is installed on the door panel (1). When the door panel (1) is locked to the door frame (4), the insert (19) is in the locked position, and the latch (16) is locked to the insert (19). When the insert (19) is in the unlocked position, the drive member (10) can drive the latch (16) to move to disengage from the insert (19), and the door panel (1) is unlocked from the door frame (4).

2. The electrical equipment according to claim 1, characterized in that, The second locking mechanism (5) further includes a latch baffle (15), which is installed on the door frame (4); when the door panel (1) is locked to the door frame (4), the latch baffle (15) limits the latch (16).

3. The electrical equipment according to claim 1, characterized in that, When the insert (19) is in the locked position, at least a portion of the insert (19) is located on the movement path of the latch (16) to block the movement of the latch (16).

4. The electrical equipment according to claim 1, characterized in that, The movement of the latch (16) is a rotational movement; the insert (19) limits the latch (16) by blocking the rotation path of the latch (16).

5. The electrical equipment according to claim 1, characterized in that, A limiting groove is provided on the insert (19), and when the door panel (1) and the door frame (4) are locked, at least part of the latch (16) is located in the limiting groove; and / or, a limiting groove is provided on the latch (16), and when the door panel (1) and the door frame (4) are locked, at least part of the insert (19) is located in the limiting groove.

6. The electrical equipment according to claim 1, characterized in that, The movement of the latch (16) is a translational movement; the insert (19) prevents the latch (16) from moving by blocking the translation of the latch (16).

7. The electrical equipment according to claim 1, characterized in that, The lock base (18) includes a first lock box (17) and a first lock body; the first lock box (17) is mounted on the door panel (1) by a fastener (13); the first lock body is connected to the first lock box (17); when the insert (19) is in the locked position, the insert (19) cooperates with the first lock body.

8. The electrical equipment according to claim 1, characterized in that, The second locking mechanism (5) further includes an internal padlock (11) for locking the drive member (10) when the door panel (1) is locked to the door frame (4).

9. The electrical equipment according to claim 1, characterized in that, It also includes a first cover plate (7) and a second cover plate (9); the first cover plate (7) is closable covering the lock seat (18) of the first locking mechanism (3), and the second cover plate (9) is closable covering the second lock box (14) of the second locking mechanism (5).

10. The electrical equipment according to any one of claims 1-9, characterized in that, When the door panel (1) and the door frame (4) are locked, the first locking mechanism (3) and the second locking mechanism (5) are both located on the side of the door panel (1) facing the internal equipment of the transformer room.

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