Interlocking protection structure and self-protection plug-in box

Abstract

The utility model relates to the technical field of plug -in box auxiliary accessories mainly discloses an interlock protection structure and self -protection plug -in box, including initiative pole, its along the self axis direction movable setting, with initiative pole mobile cooperation steering hook spare and with initiative pole synchronous reverse movement driven part, wherein, initiative pole is provided with the control rod of connection steering hook spare, initiative pole one side still is provided with the reversing piece of connection driven part with initiative pole, plug -in box top fixed protection door, and the mounting plate is fixedly connected on the opposite two side walls of plug -in box, protection door with initiative pole and driven part fixed protection resistance block and anti -drop block with corresponding position, protection resistance block with driven part top end and meet, the anti -drop block covers in the placement bucket top, the utility model overcomes the defect that the hook mechanism of plug -in box is not stable, has no interlock linkage function, poor adaptability and material performance deficiency in the prior art.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary accessories for plug-in boxes, and in particular to an interlocking protection structure and a self-protecting plug-in box. Background Technology

[0002] As a critical component in power distribution systems, plug-in boxes require a stable connection to the cabinet or other structures via hook mechanisms to ensure the safety and reliability of the power distribution process. Existing plug-in box hook mechanisms are mostly single-hook structures, lacking interlocking and linkage designs. During installation, disassembly, or exposure to external vibrations, hooks are prone to loosening or falling off, leading to insufficient connection stability and potential safety hazards. Furthermore, some mechanisms have poor adjustment flexibility, making them difficult to adapt to different plug-in box specifications, and the low positioning accuracy of components during assembly increases assembly difficulty and time costs. In addition, the material selection of existing mechanisms is unreasonable, making it difficult to balance lightweight design with structural strength. To address these issues, there is an urgent need to design a plug-in box hook mechanism with interlocking and linkage functions, based on a specific material combination. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the defects of the existing plug-in box hook mechanism, such as unstable connection, lack of interlocking linkage function, poor adaptability and insufficient material performance.

[0004] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes an interlocking protection structure, which includes an active rod that is movably arranged along its own axis; a steering hook that moves in coordination with the active rod and a driven member that moves synchronously in the opposite direction to the active rod; wherein, the active rod is provided with a control rod that connects to the steering hook, and a reversing member that connects the driven member and the active rod is also provided on one side of the active rod.

[0005] In a preferred embodiment of the interlocking protection structure of this utility model, it further includes a mounting plate, a protective shell is fixedly connected to the side wall of the mounting plate, a placement bucket is fixedly connected to the top side wall of the protective shell, and a threaded sleeve is fixedly connected to the bottom side wall of the protective shell. The placement bucket and the threaded sleeve are coaxially arranged.

[0006] In a preferred embodiment of the interlocking protection structure of this utility model: the reversing member is rotatably fixedly connected to the mounting plate, one end of which is rotatably connected to the end of the driven member, and the other end is rotatably connected to the connecting sleeve rotatably sleeved on the driving rod; or, the reversing member is rotatably fixedly connected to the mounting plate, and a worm gear tooth is fixed on its circumferential outer wall. A tooth groove is opened on the outer wall of the driven member near the reversing member, and the worm gear tooth meshes with the tooth groove. A worm tooth is provided on the outside of the driving rod, and the worm tooth meshes with the worm gear tooth.

[0007] In a preferred embodiment of the interlocking protection structure of this utility model: a first nut cap is fixed at the top of the active rod, the first nut cap is slidably placed in the placement bucket, and the active rod is threaded into the threaded sleeve.

[0008] In a preferred embodiment of the interlocking protection structure of this utility model: the active rod is fixedly inserted into the middle of the control rod, and the two ends of the control rod are symmetrical about the active rod.

[0009] In a preferred embodiment of the interlocking protection structure of this utility model: the steering hook includes a docking section and a clamping section fixedly connected to each other, the docking section and the clamping section are set at an angle, and the docking section is rotatably connected to the end of the control rod; a first slot is opened in the docking section, and a second slot is opened in the clamping section, the first slot and the second slot are connected; the angle between the groove line of the first slot on both sides and the axis of the driving rod is less than 9°, and the second slot is opened along the length direction of the clamping section.

[0010] In a preferred embodiment of the interlocking protection structure of this utility model: a reinforcing slot is also provided in the second slot, and a guide bolt is slidably inserted into the first slot and the second slot; the guide bolt includes a screw and a second nut fixed at its end, the screw is threaded into the mounting plate, and a snap-fit ​​protrusion is coaxially fixed on the second nut, the snap-fit ​​protrusion being movably snapped into the reinforcing slot.

[0011] In a preferred embodiment of the interlocking protection structure of this utility model: a limiting slot is provided in the driven member, the limiting slot is parallel to the driving rod, a limiting bolt is slidably inserted into the limiting slot, and the limiting bolt is threaded and fixed in the mounting plate; the driven member is slidably inserted into the inner nest fixed to the top side wall of the protective housing.

[0012] In a preferred embodiment of the interlocking protection structure of this utility model: a hook plate is also fixedly connected to the end of the clamping section near the active rod.

[0013] The above-mentioned technical problems are also solved by the following technical solution: a self-protecting plug-in box, which includes an interlocking protection structure and a plug-in box. A protective door is fixed on the top of the plug-in box. Mounting plates are symmetrically fixed on the opposite side walls of the plug-in box. A protective stop block and an anti-detachment block are fixed at the corresponding positions of the protective door, the active rod, and the driven member. The protective stop block abuts against the top of the driven member, and the anti-detachment block covers the top of the placement bucket.

[0014] The beneficial effects of this utility model are as follows: 1. Interlocking and Stable Operation: Two sets of steering hooks are implemented through steel control rods. The steering hooks are used to clamp and fix with the I-shaped busbar support. The two sets of steering hooks move synchronously. When the hook plate on one set is under force, it can drive the other set to adjust synchronously, effectively preventing a single hook from loosening or falling off, and significantly improving the connection stability of the plug box.

[0015] 2. Convenient adjustment and assembly: The screw and slot can be matched to flexibly adjust the angle of the steering hook, which can be adapted to different specifications of I-shaped busbar support; the engagement of the snap-fit ​​protrusion and the reinforced slot improves the assembly positioning accuracy and reduces the assembly difficulty. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein: Figure 1 The diagram shows the mechanism of the interlocking protection structure; Figure 2 A schematic diagram of the interlocking protection structure is shown. Figure 3 Two schematic diagrams of the interlocking protection structure are shown; Figure 4 The diagram shows the movement of a steering hook component of a certain structure. Figure 5 A diagram showing the movement of a steering hook with another structure is provided. Figure 6 A diagram of the guide bolt mechanism of the interlocking protection structure is shown; Figure 7 A structural diagram of the self-protected plug-in box is shown. Detailed Implementation

[0017] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0019] Reference Figures 1-7This embodiment provides an interlocking protection structure A, which includes an active rod 100. The active rod 100 is movably arranged along its own axis. The active rod 100 is made of 45# steel and chrome-plated to improve wear resistance and rust prevention. Specifically, when pressed or rotated by external force, it can move smoothly up and down or back and forth along the preset guide path of the mounting plate 500 to avoid radial deviation. In this embodiment, rotation drive is preferred. A steering hook 200 is used to coordinate with the movement of the active rod 100 for steering. The steering hook 200 is used to clamp and fix the I-shaped busbar support with the plug-in box. The steering action is achieved through the power transmission of the active rod 100. A driven member 300 moves synchronously in the opposite direction to the active rod 100. The driven member 300 and the active rod 100 form a linkage protection to prevent the plug-in box from being removed from the I-shaped busbar support when the plug-in box door is not opened. At this time, the plug-in box is not de-energized, which poses a safety hazard.

[0020] Among them, the drive rod 100 is equipped with a control rod 101 that connects to the steering hook 200. It is fixed to the drive rod 100 by welding to ensure that the power transmission is not loose. It can synchronously drive the steering hooks 200 on both sides. The drive rod 100 is also equipped with a reversing component 400 that connects the driven component 300 and the drive rod 100. The core function of the reversing component 400 is to convert the linear motion of the drive rod 100 into the reverse linear motion of the driven component 300, so as to realize the linkage and synchronization of "drive-driven" and ensure the reliability of interlocking protection.

[0021] The interlocking protection structure A also includes a mounting plate 500. The mounting plate 500 is preferably made of Q235 steel plate with a thickness of 3mm. The surface is coated with an epoxy resin anti-rust coating, which has both supporting strength and corrosion resistance, providing a stable installation foundation for the entire mechanism. A protective shell 501 is fixedly connected to the side wall of the mounting plate 500. The protective shell 501 is a sheet metal stamping part with the same material as the mounting plate 500. A 1mm thick sponge buffer layer can be pasted on the inner wall to reduce the collision noise when the internal parts move, while isolating external dust and moisture.

[0022] A placement bucket 501a is fixedly connected to the top side wall of the protective housing 501, and a threaded sleeve 501b is fixedly connected to the bottom side wall of the protective housing 501. The inner wall of the threaded sleeve 501b is provided with an internal thread that is compatible with the active rod 100. The placement bucket 501a and the threaded sleeve 501b are coaxially arranged to ensure that the active rod 100 moves along the axis without deviation, thereby improving the smoothness of movement.

[0023] The commutator 400 is rotatably fixed to the mounting plate 500 and is rotatably connected to the lug on the mounting plate 500 via a pin or a rotating shaft. Copper sleeves are fitted at both ends of the pin to reduce the coefficient of rotational friction and extend the service life. One end of the commutator 400 is rotatably connected to the end of the driven member 300 using a spherical bearing connection, which allows for a certain angle of deflection to adapt to the movement trajectory of the driven member. The other end is rotatably connected to the connecting sleeve 102 rotatably fitted on the driving rod 100. The connecting sleeve 102 is fitted on the outside of the driving rod 100 and can move synchronously with the driving rod, while allowing the commutator to rotate relative to it to avoid motion interference.

[0024] Alternatively, the reversing member 400 is rotatably fixed to the mounting plate 500, and its circumferential outer wall is fixed with worm gear teeth 401, which adopts an involute tooth profile, has high meshing accuracy and stable transmission ratio. The driven member 300 has a tooth groove 301 on the outer wall of the side close to the reversing member 400, and the tooth pitch matches the worm gear teeth 401 to ensure no risk of slippage during meshing. In addition, the driving rod 100 is provided with worm teeth 103, which mesh with the worm gear teeth 401 to realize speed reduction transmission, converting the small displacement of the driving rod 100 into the precise reverse movement of the driven member 300, thereby improving the sensitivity of the interlocking protection.

[0025] The top of the active rod 100 is fixed with a first nut cap 104, which is a hexagonal nut structure. Its outer diameter is slightly smaller than the inner diameter of the placement bucket 501a, allowing it to slide freely inside the bucket. At the same time, it limits the axial displacement range of the active rod 100 to prevent the active rod from excessively dislodging. The first nut cap 104 is slidably placed inside the placement bucket 501a. The active rod 100 is threaded into the threaded sleeve 501b, which improves the adjustment accuracy and self-locking performance and prevents the active rod from loosening on its own after being vibrated.

[0026] The drive lever 100 is fixedly inserted into the middle of the control lever 101. The two ends of the control lever 101 are symmetrical about the drive lever 100, which ensures that when the drive lever 100 moves, the driving force of the two ends of the control lever 101 on the two steering hooks 200 is balanced, avoiding excessive force on one side, which may cause deformation of the steering hooks or inconsistent movement, and ensuring the interlocking steering effect.

[0027] The steering hook 200 includes a docking section 201 and a clamping section 202 that are fixedly connected to each other. The two are integrally cast and made of Q235 carbon steel with galvanized surface treatment to enhance structural strength and rust resistance. The docking section 201 and the clamping section 202 are set at an angle of 120° to 150°. This angle ensures that when the drive lever 100 moves the control lever 101, the clamping section 202 can quickly turn and fit into the I-shaped busbar support, improving clamping efficiency. The docking section 201 is rotatably connected to the end of the control lever 101 through a pin. A wear-resistant bushing is fitted on the outside of the pin to reduce rotational wear.

[0028] The docking section 201 has a first slot 201a, and the clamping section 202 has a second slot 202a. The first slot 201a and the second slot 202a are connected. The angle between the groove line of the first slot 201a on both sides and the axis of the drive rod 100 is less than 90°. The first slots 201a on both sides form an "eight" shaped slot structure, which can efficiently convert the axial force of the drive rod 100 into the steering force of the steering hook 200, reduce force loss, and ensure that the clamping section 202 can clamp reliably. The second slot 202a is opened along the length of the clamping section 202. After the steering hook completes the steering, the clamping section 202 fits tightly with the I-shaped busbar support, improving the clamping stability.

[0029] A reinforcing slot 202b is also provided in the second slot 202a. A guide bolt 203 is slidably inserted into the first slot 201a and the second slot 202a. The first slot 201a and the second slot 202a provide a complete sliding path for the guide bolt 203, ensuring that the steering hook 200 moves along a preset trajectory when turning, avoiding deviation. At the same time, the interconnection design allows the guide bolt to smoothly transition from the first slot to the second slot during the turning process without jamming.

[0030] The guide bolt 203 includes a screw 203a and a second nut cap 203b fixed at its end. The screw 203a is threaded into the mounting plate 500. The second nut cap 203b is also coaxially fixed with a snap-fit ​​protrusion 203c. The snap-fit ​​protrusion 203c is movably snapped into the reinforcing groove 202b. The snap-fit ​​protrusion 203c is cylindrical and its diameter is slightly smaller than the width of the reinforcing groove 202b, ensuring that there is no excessive gap while it is movably snapped in.

[0031] A limiting slot 302 is provided in the driven member 300. The limiting slot 302 is parallel to the driving rod 100 to ensure that the driven member moves only in a direction parallel to the driving rod 100 and to limit its lateral displacement. A limiting bolt 303 is slidably inserted in the limiting slot 302. The head diameter of the limiting bolt 303 is larger than the width of the limiting slot 302 to prevent the driven member 300 from coming off the bolt, while not affecting the sliding of the driven member 300. The limiting bolt 303 is threaded and fixed in the mounting plate 500.

[0032] The follower 300 is slidably inserted into the inner nest 501c fixed to the top side wall of the protective housing 501. The inner wall of the inner nest 501c is polished, and the inner diameter is clearance-fitted with the outer diameter of the follower 300, which not only ensures the smooth sliding of the follower 300, but also plays a radial positioning role to prevent the follower from shaking.

[0033] A hook plate 202c is also fixedly connected to the end of the clamping section 202 near the active rod 100. The hook plate 202c is an arc-shaped steel plate that is welded and fixed to the clamping section 202. A rubber anti-slip pad is pasted on the inner side to increase the friction with the I-shaped busbar support, prevent slippage after clamping, and avoid damage to components caused by hard contact.

[0034] To better utilize the interlocking protection structure A, this embodiment also provides a self-protecting plug-in box, which includes the interlocking protection structure A and a plug-in box 600. The plug-in box 600 is a commonly used specification in power distribution systems, equipped with standard interfaces and mounting positions. A protective door 601 is fixed to the top of the plug-in box 600. It is made of cold-rolled steel plate with a powder-coated surface, providing dustproof and anti-accidental contact functions. The mounting plate 500 is symmetrically fixed to the opposite side walls of the plug-in box 600 and secured with M5 expansion screws to ensure stable installation and prevent the mounting plate from loosening during operation. Alternatively, the components mounted on the mounting plate 500 can be transferred and mounted on the side walls of the plug-in box 600, thus omitting the mounting plate 500 structure.

[0035] A protective abutment 601a is fixed at the corresponding position of the protective door 601 and the driven member 300. The protective abutment 601a is a rubber block. When the protective door 601 is closed, it abuts against the top of the driven member 300, restricting the displacement of the driven member 300 and buffering the impact force when the protective door is closed. A detachment block 601b is also fixed at the corresponding position of the protective door 601 and the drive rod 100. The detachment block 601b is a metal cover plate and is connected to the protective door 601 by a buckle. The protective abutment 601a abuts against the top of the driven member 300. The detachment block 601b covers the top of the placement bucket 501a, which can prevent dust and debris from entering the bucket and avoid affecting the sliding of the first nut cap 104. At the same time, it plays a protective role and prevents external force from hitting the top of the drive rod.

[0036] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. An interlocking protection structure (A), characterized in that: include, The active lever (100) is movable along its own axis. A steering hook (200) that moves in coordination with the drive rod (100) for steering, and a driven member (300) that moves synchronously in the opposite direction to the drive rod (100). The active rod (100) is provided with a control rod (101) that connects to the steering hook (200), and a reversing member (400) that connects the driven member (300) and the active rod (100) is also provided on one side of the active rod (100).

2. The interlock protection structure according to claim 1, characterized by: It also includes an installation plate (500), on which a protective housing (501) is fixedly connected to the side wall. A placement bucket (501a) is fixedly connected to the top side wall of the protective housing (501), and a threaded sleeve (501b) is fixedly connected to the bottom side wall of the protective housing (501). The placement bucket (501a) and the threaded sleeve (501b) are coaxially arranged.

3. The interlock protection structure according to claim 2, characterized by: The reversing component (400) is rotatably fixedly connected to the mounting plate (500), with one end rotatably connected to the end of the driven component (300) and the other end rotatably connected to the connecting sleeve (102) rotatably sleeved on the driving rod (100); Alternatively, the reversing member (400) is rotatably fixed to the mounting plate (500), and a worm gear tooth (401) is fixed on its circumferential outer wall. The driven member (300) has a tooth groove (301) on its outer wall near the reversing member (400). The worm gear tooth (401) meshes with the tooth groove (301), and a worm tooth (103) is provided on the outside of the driving rod (100). The worm tooth (103) meshes with the worm gear tooth (401).

4. The interlock protection structure according to claim 2 or 3, characterized by: The top of the active rod (100) is fixed with a first nut cap (104), which is slidably placed in the placement bucket (501a), and the active rod (100) is threaded into the threaded sleeve (501b).

5. The interlock protection structure according to claim 2 or 3, characterized by: The active rod (100) is fixedly inserted into the middle of the control rod (101), and the two ends of the control rod (101) are symmetrical about the active rod (100).

6. The interlock protection structure according to claim 5, characterized by: The steering hook (200) includes a docking section (201) and a clamping section (202) that are fixedly connected to each other. The docking section (201) and the clamping section (202) are set at an angle. The docking section (201) is rotatably connected to the end of the control rod (101). The docking section (201) has a first slot (201a) and the clamping section (202) has a second slot (202a) connected to each other. The angle between the groove line of the first slot (201a) on both sides and the axis of the active rod (100) is less than 90°, and the second slot (202a) is opened along the length direction of the clamping section (202).

7. The interlocking protection structure according to claim 6, characterized in that: The second slot (202a) is also provided with a reinforcing slot (202b), and guide bolts (203) are slidably inserted into the first slot (201a) and the second slot (202a). The guide bolt (203) includes a screw (203a) and a second nut cap (203b) fixed at its end. The screw (203a) is threaded into the mounting plate (500). A snap-fit ​​protrusion (203c) is also coaxially fixed on the second nut cap (203b). The snap-fit ​​protrusion (203c) is movably snapped into the reinforcing groove (202b).

8. The interlock protection structure according to claim 7, characterized by: The driven member (300) has a limiting slot (302) which is parallel to the driving rod (100). A limiting bolt (303) is slidably inserted into the limiting slot (302) and the limiting bolt (303) is threadedly fixed in the mounting plate (500). The follower (300) is slidably inserted into the inner nest (501c) fixed to the top side wall of the protective housing (501).

9. An interlock protection structure according to any one of claims 6 to 8, wherein: A hook plate (202c) is also fixedly connected to the end of the clamping section (202) near the active rod (100).

10. A self-protection plug-in box, characterized by: Including the interlocking protection structure (A), it also includes, A plug-in box (600) is provided with a protective door (601) fixed on its top. Mounting plates (500) are symmetrically fixed on the opposite side walls of the plug-in box (600). The protective door (601) is fixed with a protective stop (601a) and an anti-detachment block (601b) at the corresponding positions of the active rod (100) and the driven member (300). The protective stop (601a) abuts against the top of the driven member (300), and the anti-detachment block (601b) covers the top of the placement bucket (501a).

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