Electrical device with protection assembly

Abstract

The embodiment of the present application discloses an electrical equipment with a protection assembly. A current meter of the electrical equipment is arranged in a power distribution cabinet, an adjusting bolt is arranged in the current meter for calibrating a pointer of the current meter, the adjusting assembly comprises a ring-shaped shell, a circular cover, a rotating slide column and an embedding block, the ring-shaped shell is arranged on a front face of the current meter, the circular cover is rotatably arranged in the ring-shaped shell, the rotating slide column is slidably arranged in the circular cover along an axial direction of the circular cover and is rotatable relative to the circular cover, the embedding block is arranged at one end of the rotating slide column close to the current meter for being embedded with a nut of the adjusting bolt, a limiting assembly is arranged between the circular cover and the ring-shaped shell for locking the circular cover in a working position, when the circular cover is rotated to the working position, the embedding block is opposite to the adjusting bolt, the rotating slide column is pressed and rotated to make the embedding block embedded with the nut of the adjusting bolt and the adjusting bolt is driven to rotate. The electrical equipment of the embodiment of the present application can directly complete zero or value calibration by rotating the rotating slide column.

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet technology, and more specifically to an electrical device with protective components. Background Technology

[0002] Real-time monitoring of electrical equipment status is crucial during power plant operation. Distribution cabinets, as key equipment for power distribution and control, typically have ammeters installed on their doors to visually display current values ​​and monitor the real-time load of the lines. These mechanical ammeters rely on internal electromagnetic mechanisms to drive the pointer deflection, and their accuracy directly affects the operators' judgment. However, due to long-term operation, mechanical aging, or environmental factors, the ammeter pointer may drift to zero or exhibit indication errors, causing the indicated value to differ from the actual current. When monitoring reveals a discrepancy between the indicated value and the actual current due to mechanical drift or other reasons... When there is a discrepancy, maintenance personnel need to make manual adjustments. There is a special calibration bolt (or adjusting screw) in a specific position on the watch case. The maintenance personnel use a screwdriver of the matching size to insert into the slot of the bolt and turn the bolt slightly in a clockwise or counterclockwise direction. This directly drives the mechanical transmission mechanism inside the watch, thereby causing the pointer to move slowly and accurately on its scale. During the adjustment process, the personnel need to observe the position of the pointer at the same time and gradually adjust it to the accurate zero point or make it point to the correct scale line corresponding to the standard signal source. The entire adjustment relies on manual feel and visual judgment. Once the pointer position is accurate, the calibration is completed.

[0003] During use, since calibration requires a dedicated screwdriver, in emergency situations where the ammeter reading is abnormal and quick verification or temporary calibration is needed, if the maintenance personnel do not have the screwdriver with them or the tools are lost or incompatible, they cannot make adjustments on the spot and must interrupt their work to retrieve the tools, resulting in delays in the adjustment process and affecting the real-time recovery of monitoring data. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose an electrical device with protective components that can directly perform zero-position or indication calibration by rotating a sliding column.

[0006] The electrical equipment with protective components according to embodiments of the present invention includes a distribution cabinet, an ammeter, an adjusting bolt, an adjusting assembly, and a limiting assembly. The ammeter is disposed in the distribution cabinet, and the adjusting bolt is disposed in the ammeter for calibrating the ammeter's pointer. The adjusting assembly includes an annular shell, a circular cover, a rotating slide, and an insert block. The annular shell is disposed on the front of the ammeter, and the circular cover is rotatably disposed in the annular shell. The rotating slide is slidably inserted through the circular cover along its axial direction and is rotatable relative to the circular cover. The insert block is disposed at one end of the rotating slide near the ammeter for engaging with the nut of the adjusting bolt. The limiting assembly is disposed between the circular cover and the annular shell for locking the circular cover in a working position. When the circular cover is rotated to the working position, the insert block faces the adjusting bolt. Pressing and rotating the rotating slide causes the insert block to engage with the nut of the adjusting bolt, thereby driving the adjusting bolt to rotate.

[0007] The electrical equipment with protective components in this invention eliminates the reliance on dedicated screwdrivers. In emergencies, maintenance personnel do not need to interrupt calibration work due to missing or incompatible tools; they can directly complete zero-point or indication calibration by rotating the sliding column, shortening adjustment delays and ensuring rapid recovery of monitoring data. Simultaneously, the closed protective structure formed by the annular shell and circular cover prevents dust and foreign objects from entering the adjusting bolt area, while the limiting component ensures that the insert block remains detached from the nut during normal operation, avoiding accidental adjustment. This balances ease of operation with long-term equipment reliability.

[0008] In some embodiments, the limiting component includes an opening ring and a snap-fit ​​component. The opening ring is disposed inside the annular shell and has a positioning hole. The snap-fit ​​component is disposed on the circular cover, and a portion of the snap-fit ​​component is movable relative to the circular cover. When the circular cover is rotated to the working position, a portion of the snap-fit ​​component can be inserted into the positioning hole to lock the circular cover.

[0009] In some embodiments, the locking component includes a rotating head, a sliding pin, a pressing block, a first guide post, and an elastic element. The rotating head passes through the circular cover, the sliding pin passes through the rotating head and is movable relative to the circular cover radially. The sliding pin has a first inclined groove. The pressing block passes through the rotating head and is movable relative to the circular cover axially. The first guide post is disposed on the pressing block and slidably engaged within the first inclined groove. The elastic element is disposed between the pressing block and the inner wall of the rotating head for resetting the pressing block. Movement of the pressing block can drive movement of the sliding pin. The first guide post slides along the first inclined groove, forcing the sliding pin to retract to release the lock. When the pressing block is released, the elastic element drives the pressing block to reset, thereby causing the sliding pin to extend and insert into the positioning hole.

[0010] In some embodiments, the electrical equipment with protective components of the present invention further includes a sealing component. The sealing component is disposed on the circular cover for sealing and protecting the adjusting bolt in a non-adjusting state. The sealing component includes a connecting plate, a rubber ring, and a guide component. The connecting plate is axially slidably connected inside the circular cover by a limiting post. The rubber ring is disposed on the side of the connecting plate facing the ammeter. The guide component is disposed between the annular shell and the connecting plate for driving the connecting plate to move and press the rubber ring closer to the surface of the ammeter when the circular cover is reset and rotated.

[0011] In some embodiments, the guiding component includes a second guide post disposed on the connecting plate. The inner wall of the annular shell has a second inclined groove and a first surrounding groove. The second inclined groove and the first surrounding groove communicate with each other. The second guide post is slidably engaged between the second inclined groove and the first surrounding groove. When the circular cover is reset and rotated, the second guide post first slides circumferentially in the first surrounding groove and then slides axially in the second inclined groove, thereby causing the rubber ring to approach and press against the surface of the ammeter during the synchronous process of rotation and reset.

[0012] In some embodiments of the present invention, the electrical device with protective components further includes a venting component disposed on the circular cover for communicating the interior of the annular shell with the external environment. The venting component includes a baffle and a driving component. The baffle is slidably disposed inside the circular cover. The circular cover has a vent hole. The baffle is used to block or open the vent hole. The driving component is disposed between the annular shell and the baffle for driving the baffle to slide to open the vent hole when the circular cover continues to rotate past the working position.

[0013] In some embodiments, the driving component includes a third guide post disposed on the baffle. The annular shell has a third inclined groove and a second surrounding groove, which communicate with each other. The third guide post is slidably engaged between the third inclined groove and the second surrounding groove. When the circular cover is adjusted and rotated, the third guide post slides in the second surrounding groove. When the circular cover continues to rotate, the third guide post enters the third inclined groove, driving the baffle to slide, thereby opening the vent.

[0014] In some embodiments, the rotating slide column consists of two circular blocks, a circular rod connecting the two blocks, and a screw block located at the end away from the ammeter. The two circular blocks are located on both sides of the circular cover, and the circular rod slides through and is rotatably connected to the circular cover.

[0015] In some embodiments, there are two positioning holes, which are symmetrically arranged on the opening ring. The two positioning holes correspond to the initial locking position and the working position after rotating 180 degrees, respectively.

[0016] In some embodiments, the end of the rubber ring near the ammeter has a hollow conical flared structure, and the inner hollow diameter of the rubber ring is larger than the diameter of the adjusting bolt, so as to form a tighter fit with the surface of the ammeter when tightened. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an electrical device with protective components according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the annular shell structure according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the pressing block according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the embedded block in an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of the elastic element according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the first inclined groove in an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the connecting plate according to an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the structure of the second inclined groove in an embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure of the limiting post according to an embodiment of the present invention.

[0026] Figure 10 This is a schematic diagram of the baffle structure according to an embodiment of the present invention.

[0027] Figure 11 This is a schematic diagram of the perforated ring of the annular shell according to an embodiment of the present invention.

[0028] Figure label:

[0029] 100. Electrical equipment with protective components; 1. Distribution cabinet; 2. Ammeter; 3. Annular shell; 301. Second inclined groove; 302. First surrounding groove; 303. Third inclined groove; 304. Second surrounding groove; 4. Circular cover; 401. Vent hole; 5. Rotating slide column; 6. Embedded block; 7. Opening ring; 8. Snap-fit ​​component; 801. Rotating head; 802. Sliding insert; 8021. First inclined groove; 803. Pressing block; 804. First guide post; 805. Elastic element; 9. Connecting plate; 10. Limiting post; 11. Rubber ring; 12. Second guide post; 13. Baffle; 14. Third guide post. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] like Figures 1 to 11 As shown, the electrical equipment 100 with protective components according to an embodiment of the present invention includes a distribution cabinet 1, an ammeter 2, an adjusting bolt, an adjusting assembly, and a limiting assembly. The ammeter 2 is disposed in the distribution cabinet 1, and the adjusting bolt is disposed in the ammeter 2 for calibrating the pointer of the ammeter 2. The adjusting assembly includes an annular shell 3, a circular cover 4, a rotating slide 5, and an embedded block 6. The annular shell 3 is disposed on the front of the ammeter 2, the circular cover 4 is rotatably disposed in the annular shell 3, and the rotating slide 5 is slidably inserted along the axial direction of the circular cover 4. The insert block 6 is located on the circular cover 4 and is rotatable relative to the circular cover 4. It is located at one end of the rotating slide 5 near the ammeter 2 for engaging with the nut of the adjusting bolt. The limiting component is located between the circular cover 4 and the annular shell 3 for locking the circular cover 4 in the working position. When the circular cover 4 is rotated to the working position, the insert block 6 is facing the adjusting bolt. Pressing and rotating the rotating slide 5 causes the insert block 6 to engage with the nut of the adjusting bolt and drive the adjusting bolt to rotate.

[0032] The electrical device 100 with protective components of this invention enables operation of the adjusting bolt without special tools by providing an adjusting component on the front of the ammeter 2. For example, as shown... Figures 2 to 5 As shown, the adjusting assembly includes an annular shell 3 fixed to the front of the ammeter 2, a circular cover 4 rotatable and locked onto the annular shell 3, and a rotating slide 5 that can slide along the axial direction of the circular cover 4 and rotate synchronously. The end of the rotating slide 5 has an insert block 6 that matches the contour of the adjusting bolt nut. When the circular cover 4 is rotated to the working position and locked by the limiting assembly, the insert block 6 is precisely aligned with the adjusting bolt. At this time, the maintenance personnel only need to press and rotate the rotating slide 5 to make the insert block 6 engage with the nut and drive the adjusting bolt to rotate, thereby driving the internal mechanical mechanism of the ammeter 2 to fine-tune the pointer position.

[0033] The electrical equipment 100 with protective components in this embodiment of the invention eliminates the reliance on a dedicated screwdriver. In emergencies, maintenance personnel do not need to interrupt calibration work due to missing tools or incompatible models; they can directly complete zero-point or indication calibration by rotating the sliding column 5, shortening adjustment delay and ensuring rapid recovery of monitoring data. Simultaneously, the closed protective structure formed by the annular shell 3 and the circular cover 4 prevents dust and foreign objects from entering the adjusting bolt area, while the limiting component ensures that the embedded block 6 remains detached from the nut during normal operation, avoiding accidental adjustment. This balances ease of operation with long-term equipment reliability.

[0034] In some embodiments, the limiting component includes an opening ring 7 and a locking member 8. The opening ring 7 is disposed inside the annular shell 3 and has a positioning hole. The locking member 8 is disposed on the circular cover 4. A portion of the locking member 8 is movable relative to the circular cover 4. When the circular cover 4 is rotated to the working position, a portion of the locking member 8 can be inserted into the positioning hole to lock the circular cover 4.

[0035] For example, such as Figure 4 , Figure 10 and Figure 11 As shown, the limiting assembly consists of an open ring 7 fixed to the inner wall of the annular shell 3 and a snap-fit ​​component 8 mounted on the circular cover 4. The open ring 7 has a positioning hole at a specific location, and a portion of the snap-fit ​​component 8 can extend, retract, or swing relative to the circular cover 4. When the maintenance personnel rotate the circular cover 4, causing the snap-fit ​​component 8 to reach the working position where the insert block 6 is directly opposite the adjusting bolt, the movable part of the snap-fit ​​component 8 precisely aligns with the positioning hole and automatically inserts into the hole under elastic force or manual assistance, thereby locking the circular cover 4 circumferentially and preventing the insert block 6 from deviating from its aligned position due to accidental rotation during subsequent pressing and rotating operations.

[0036] The electrical equipment 100 with protective components in this embodiment of the invention achieves reliable locking of its working position through simple mechanical engagement, requiring no additional operation or tools. Once the position is locked, maintenance personnel can concentrate on pressing and rotating the sliding column 5 to complete the adjustment without worrying about the circular cover 4 shifting and causing the embedded block 6 to detach from the nut. Simultaneously, when the circular cover 4 needs to be reset after calibration, simply applying force to overcome the locking force will allow the locking component 8 to exit the positioning hole and return to a free-rotating state, making the operation intuitive.

[0037] In some embodiments, the snap-fit ​​component 8 includes a rotating head 801, a sliding post 802, a pressing block 803, a first guide post 804, and an elastic element 805. The rotating head 801 passes through the circular cover 4, the sliding post 802 passes through the rotating head 801 and is movable relative to the circular cover 4 along the radial direction of the circular cover 4, the sliding post 802 has a first inclined groove 8021, the pressing block passes through the rotating head 801 and is movable relative to the circular cover 4 along the axial direction of the circular cover 4, and the first guide post 804 is disposed on the pressing block. The pressing block 803 is slidably fitted within the first inclined groove 8021. The elastic element 805 is disposed between the pressing block 803 and the inner wall of the rotating head 801 for resetting the pressing block 803. The movement of the pressing block 803 can drive the sliding insert 802 to move. The first guide post 804 slides along the first inclined groove 8021, forcing the sliding insert 802 to retract to release the lock. When the pressing block 803 is released, the elastic element 805 drives the pressing block 803 to reset, thereby causing the sliding insert 802 to extend and be inserted into the positioning hole.

[0038] Specifically, such as Figure 5 and Figure 6 As shown, in its natural state, the elastic element 805 pushes the pressing block 803 away from the ammeter 2, causing the sliding pin 802 to extend radially, ready to be inserted into the positioning hole of the opening ring 7 to lock the circular cover 4. When a maintenance personnel presses the pressing block 803 with their finger to move it axially, the first guide post 804 slides along the first inclined groove 8021, forcing the sliding pin 802 to overcome the resistance of the elastic element 805 and retract radially, thereby releasing the lock and allowing the circular cover 4 to rotate freely. After releasing the pressing block 803, the elastic element 805 drives the pressing block 803 to reset, and the first guide post 804 slides in the opposite direction, again forcing the sliding pin 802 to extend radially to achieve locking.

[0039] Under normal conditions, the elastic locking ensures that the circular cover 4 is securely fixed in the working position and does not loosen, preventing accidental rotation. When reset is required, simply pressing the pressing block 803 will instantly disengage the lock, without the need for special tools or additional disassembly steps. At the same time, the axial pressing and radial locking structure separates the force application direction and the locking direction, which not only avoids interference within the internal space of the annular shell 3, but also ensures that the elastic element 805 is always under axial pressure, resulting in a longer lifespan, lower failure risk, and improved reliability and tactile consistency when repeatedly switching locking states in emergency calibration scenarios.

[0040] In some embodiments, the electrical equipment 100 with protective components of the present invention further includes a sealing component. The sealing component is disposed on the circular cover 4 to seal and protect the adjusting bolt in the non-adjusting state. The sealing component includes a connecting plate 9, a rubber ring 11, and a guide component. The connecting plate 9 is axially slidably connected inside the circular cover 4 by a limiting post 10. The rubber ring 11 is disposed on the side of the connecting plate 9 facing the ammeter 2. The guide component is disposed between the annular shell 3 and the connecting plate 9 to drive the connecting plate 9 to move the rubber ring 11 toward the surface of the ammeter 2 and press it tightly when the circular cover 4 is reset and rotated.

[0041] For example, such as Figure 9 As shown, the sealing assembly is integrated inside the circular cover 4 and consists of a connecting plate 9, a rubber ring 11, and a guide component. The connecting plate 9 slides axially within the circular cover 4 via a limiting post 10, and the rubber ring 11 is fixed to the side of the connecting plate 9 facing the ammeter 2. When the maintenance personnel rotate the circular cover 4 from the working position back to the reset position in the non-adjustment state, the guide component between the connecting plate 9 and the annular shell 3 will generate an axial pushing force as it rotates, driving the connecting plate 9 to bring the rubber ring 11 closer to and press it against the surface of the ammeter 2, forming an elastic sealing contact and sealing the adjustment bolt area.

[0042] In some embodiments, the guiding component includes a second guide post 12 disposed on the connecting plate 9. The inner wall of the annular shell 3 has a second inclined groove 301 and a first surrounding groove 302, which are interconnected. The second guide post 12 is slidably fitted between the second inclined groove 301 and the first surrounding groove 302. When the circular cover 4 is reset and rotated, the second guide post 12 first slides circumferentially in the first surrounding groove 302 and then slides axially in the second inclined groove 301, thereby causing the rubber ring 11 to approach and press against the surface of the ammeter 2 during the synchronous process of rotation reset.

[0043] For example, such as Figure 8As shown, the inner wall of the annular shell 3 is sequentially provided with a through second inclined groove 301 and a first surrounding groove 302. The second guide post 12 is fixed on the connecting plate 9. When the circular cover 4 starts to rotate from the working position to reset, the second guide post 12 first slides circumferentially in the first surrounding groove 302. When the second guide post 12 slides to the junction with the second inclined groove 301, the continued rotation forces the second guide post 12 to slide along the inclined direction of the second inclined groove 301, thereby driving the connecting plate 9 to move axially toward the surface of the ammeter 2, so that the rubber ring 11 gradually approaches and is finally pressed.

[0044] During the first half of the reset rotation, the rubber ring 11 remains away from the surface of the ammeter 2 to avoid premature contact that could lead to frictional wear or accidental deformation of the sealing ring. During the second half of the rotation, the axial compression seal is smoothly and continuously completed through the guiding action of the inclined groove, and the entire process is naturally coupled with the operator's rotational movements.

[0045] In some embodiments, the electrical device 100 with protective components of the present invention further includes a ventilation component disposed on the circular cover 4 for communicating the interior of the annular shell 3 with the external environment. The ventilation component includes a baffle 13 and a driving component. The baffle 13 is slidably disposed inside the circular cover 4. The circular cover 4 has a vent hole 401. The baffle 13 is used to block or open the vent hole 401. The driving component is disposed between the annular shell 3 and the baffle 13 for driving the baffle 13 to slide to open the vent hole 401 when the circular cover 4 continues to rotate past the working position.

[0046] Specifically, such as Figure 2 and Figure 3 As shown, the ventilation assembly is integrated inside the circular cover 4 and consists of a sliding baffle 13 and a drive component. The circular cover 4 has a vent 401 that connects to the interior of the annular shell 3. Initially, the baffle 13 covers this vent, keeping the interior of the annular shell 3 relatively sealed. When maintenance personnel rotate the circular cover 4 further from its working position after calibration, the drive component between the annular shell 3 and the baffle 13 is triggered, pushing the baffle 13 to slide and exposing the vent 401, thus creating a communication channel between the interior of the annular shell 3 and the external environment.

[0047] In some embodiments, the driving component includes a third guide post 14 disposed on the baffle 13. The annular shell 3 has a third inclined groove 303 and a second surrounding groove 304, which are interconnected. The third guide post 14 is slidably engaged between the third inclined groove 303 and the second surrounding groove 304. When the circular cover 4 is adjusted and rotated, the third guide post 14 slides in the second surrounding groove 304. When the circular cover 4 continues to rotate, the third guide post 14 enters the third inclined groove 303, driving the baffle 13 to slide, thereby opening the vent 401.

[0048] For example, such as Figure 11 As shown, the third guide post 14 is fixed to the baffle 13, and the inner wall of the annular shell 3 is provided with a third inclined groove 303 and a second surrounding groove 304 that are interconnected. When the circular cover 4 is rotated to the working position for adjustment, the third guide post 14 only slides circumferentially in the second surrounding groove 304. At this time, the baffle 13 remains in its original position, and the vent 401 is still blocked. If the maintenance personnel continue to rotate the circular cover 4 in the same direction to make it exceed the working position, the third guide post 14 will enter the third inclined groove 303 from the surrounding groove and slide along the inclined direction of the groove, thereby driving the baffle 13 to slide laterally and fully opening the vent 401.

[0049] In some embodiments, the rotating slide 5 consists of two circular blocks, a circular rod connecting the two blocks, and a screw block located at one end away from the ammeter 2. The two circular blocks are located on both sides of the circular cover 4, and the circular rod slides through and is rotatably connected to the circular cover 4.

[0050] The rotating slide 5 consists of two circular blocks, a circular rod connecting the two, and a screw block located at the end furthest from the ammeter 2. The two circular blocks are located on both sides of the circular cover 4, clamping the circular cover 4 in the middle, while the circular rod slides through the circular cover 4 and remains rotatably connected to it. Maintenance personnel can apply pressing and rotational force to the rotating slide 5 through the screw block, causing it to slide and rotate axially, thereby engaging the embedded block 6 with the adjusting bolt.

[0051] In some embodiments, there are two positioning holes, which are symmetrically arranged on the opening ring 7. The two positioning holes correspond to the initial locking position and the working position after rotating 180 degrees of the circular cover 4, respectively.

[0052] Two positioning holes are symmetrically arranged on the perforated ring 7, corresponding to the initial locked position of the circular cover 4 (e.g., the adjusting bolt is completely covered and not exposed) and the working position after rotating 180 degrees (e.g., the embedded block 6 is facing the adjusting bolt). When the circular cover 4 is rotated to either of the above positions, the movable part of the snap-fit ​​component 8 can be inserted into the corresponding positioning hole to achieve positioning and locking.

[0053] In the initial locked position, the circular cover 4 is securely fixed to prevent accidental exposure of the adjusting bolt due to vibration or accidental contact. In the working position, the locking mechanism ensures that the embedded block 6 will not shift after being aligned with the adjusting bolt. Users can quickly switch between the two states by simply rotating the circular cover 4 180 degrees. The operation is simple and the positioning is precise, eliminating the need for visual confirmation of the angle. This improves efficiency in emergency situations and enhances the equipment's reliability under different operating conditions.

[0054] In some embodiments, the end of the rubber ring 11 near the ammeter 2 is a hollow conical flared structure, and the internal hollow diameter of the rubber ring 11 is larger than the diameter of the adjusting bolt, so as to form a tighter fit with the surface of the ammeter 2 when pressed.

[0055] Specifically, such as Figure 9 As shown, the end of the rubber ring 11 near the ammeter 2 is designed as a hollow conical flared structure, and the internal hollow diameter of the rubber ring 11 is larger than the diameter of the adjusting bolt. When the connecting plate 9 drives the rubber ring 11 to be axially pressed against the surface of the ammeter 2, the outer edge of the conical flared opening first contacts the surface of the ammeter 2. As the pressing force increases, the conical flared opening gradually opens outward and deforms elastically, so that the rubber ring 11 and the surface of the ammeter 2 form a larger area of ​​tight fit, while completely enclosing the area of ​​the adjusting bolt inside the hollow.

[0056] The hollow conical flared structure increases the contact area and elastic pre-tightening deformation capacity, giving it better adaptive compensation capabilities for the ammeter 2 housing with varying surface flatness. It can form an effective seal even on slightly uneven or non-perfectly parallel surfaces. The hollow space inside the flare ensures that the rubber ring 11 does not directly squeeze the adjusting bolt itself during tightening, avoiding the risk of accidental bolt rotation or damage due to sealing pressure. At the same time, the hollow structure also facilitates the smooth disengagement of the rubber ring 11 during subsequent calibration operations.

[0057] In some embodiments, an electrical device with protective components enables the adjustment of an ammeter 2 without the need for its own tools. The device includes an adjustment assembly comprising a distribution cabinet 1 and an ammeter 2 mounted on the front of the cabinet door. An annular shell 3 is fixedly connected to the front of the ammeter 2. A circular cover 4 is rotatably connected to the outside of the annular shell 3. A rotating slide post 5 is slidably connected inside the circular cover 4. An insert block 6, which engages with an adjusting bolt, is fixedly connected to the back of the rotating slide post 5. An opening ring 7 is fixedly connected to the inside of the annular shell 3 near the opening. Snap-fit ​​components 8 are provided on both the front and rear sides of the circular cover 4. A sealing assembly includes a limiting post 10 slidably connected inside the circular cover 4. A connecting plate 9 is fixedly connected to the back of the position post 10, and a rubber ring 11 for sealing the adjusting bolt is fixedly connected to the back of the connecting plate 9; the ventilation assembly includes a vent 401 opened inside the circular cover 4, and a baffle 13 for blocking the vent 401 is slidably connected inside the circular cover 4; an opening assembly is provided at the protruding edge of the annular shell 3; the rotating slide post 5 consists of two circular blocks, a circular rod in the center of the blocks, and a screw block on the front; the circular blocks are distributed on the front and rear sides of the circular cover 4; the circular rod slides through the inside of the circular cover 4 and is rotatably connected to the hole wall inside the circular cover 4; two insertion holes are opened inside the opening ring 7, and the two insertion holes are symmetrically arranged.

[0058] With the adjustable components, the ammeter 2 pointer can be adjusted directly without the need for its own tools when it malfunctions. An annular shell 3 for sealing and protection is located on the front of the ammeter 2, and a rotatable circular cover 4 is also located on the front of the annular shell 3. The rotating circular cover 4 is used to adjust the position of the rotating slide 5, allowing the insert block 6 to be properly inserted into the nut of the adjusting bolt. The rotating design prevents accidental pointer position deviation when not in adjustment mode. Specifically, rotating the rotating head 801 causes the circular cover 4 to rotate. When the circular cover 4 rotates 180 degrees clockwise, the insert block 6 is positioned directly in front of the adjusting bolt. By contacting the rotating slide 5, the insert block 6 fits against the nut. Tightening the rotating slide 5 pushes the insert block 6 into the nut of the adjusting bolt. Only in this state can the rotating slide 5 be rotated to adjust the pointer position.

[0059] To prevent the circular cover 4 from wobbling and affecting the stability of the adjustment when rotating the sliding pin 5, two symmetrically arranged insertion holes are provided inside the perforated ring 7. Before turning the rotating head 801 clockwise, the pressing block 803 needs to be pressed to further insert it into the rotating head 801. When the pressing block 803 moves, it will drive the first guide post 804 to move. The first guide post 804 can guide the first inclined groove 8021, causing the sliding pin 802 to slide. When the sliding pin 802 slides, it will move away from the opening. Inside the insertion hole of the annular ring 7, the rotating head 801 can be rotated. During rotation, the pressing block 803 can be released until the sliding insertion post 802 rotates 180 degrees along the axis of the annular shell 3. Then, the pressing block 803 is reset by the squeezed spring, and the sliding insertion post 802 will automatically embed into the symmetrical insertion hole. In this state, the rotation of the circular cover 4 is limited. At this time, the rotating slide post 5 is placed directly in front of the adjusting bolt. In this state, the adjustment of the rotating slide post 5 can be made without worrying about the influence of the rotation of the circular cover 4.

[0060] The sealing assembly further protects the adjusting bolt from external factors such as moisture and dust, preventing it from being affected by the annular shell 3 and the circular cover 4. When the circular cover 4 is rotated clockwise, the rubber ring 11 covering the adjusting bolt will disengage from the bolt. After adjusting the bolt, the rotating head 801 needs to be rotated counterclockwise to reset the rubber ring 11. The connecting plate 9 is connected to the second guide post 12, which is embedded in the first annular groove 302 before counterclockwise rotation. Therefore, as the circular cover 4 rotates, the rubber ring 11 rotates, gradually approaching the adjusting bolt. When the rubber ring 11... As the second guide post 12 approaches the adjusting bolt, it moves to the junction of the second inclined groove 301 and the first surrounding groove 302. The second inclined groove 301 is a precipitous groove, meaning that the rubber ring 11 will continuously approach the surface of the ammeter 2 during its final movement, moving towards the same axis as the adjusting bolt, until it is in contact with the surface of the ammeter 2 and then being squeezed. When the sliding pin 802 is inserted into the socket again, the rubber ring 11 covers the outside of the adjusting bolt, providing further sealing protection. At this time, the rubber ring 11 is in a squeezed state, which will cause the rubber ring 11 to deform, thus making it fit more tightly with the ammeter 2 without any gaps.

[0061] The ventilation components allow for exhaust of air from the inside of the annular shell 3, preventing condensation caused by the heat generated by the equipment coming into contact with cold external air. When the distribution cabinet 1 is working, it generates a lot of heat, which is conducted to the ammeter 2. In low room temperature conditions, condensation will occur inside the annular shell 3. Therefore, the circular cover 4 can be rotated clockwise and then rotated a little further clockwise. During this movement, the third guide post 14 at the bottom of the baffle 13 will move from inside the second surrounding groove 304 into the third inclined groove 303. As the third guide post 14 moves, it will cause the baffle 13 to slide, which will open the opening on the surface of the circular cover 4. In this state, it can help to expel the humid air inside the circular cover 4 and prevent condensation from forming inside the annular shell 3.

[0062] The snap-fit ​​component 8 includes a rotating head 801 fixedly connected inside the circular cover 4. A hollow frame is fixedly connected to the back of the rotating head 801. A sliding post 802 that is slidably connected inside the hollow frame and inserted into the opening of the opening ring 7 is slidably connected. A first inclined groove 8021 is provided inside the sliding post 802. A pressing block 803 is slidably connected inside the rotating head 801. A spring is provided between the lower part of the plate-like structure outside the pressing block 803 and the inner wall of the rotating head 801. A first guide post 804 that is slidably connected to the first inclined groove 8021 is fixedly connected to both sides of the bottom end of the pressing block 803.

[0063] The first inclined groove 8021 gradually slopes forward from top to bottom. Therefore, when the pressing block 803 is pressed, the first inclined groove 8021 will descend. That is to say, when the pressing block 803 is pressed, the sliding pin 802 can slide and move away from the insertion hole inside the opening ring 7. When the pressing block 803 is pressed, the spring will be compressed. When the pressing block 803 is released, the compressed spring will be relieved of pressure, thereby pushing the pressing block 803 to reset. After the reset, the pressing block 803 can change the position of the first guide post 804, thereby sending the plug of the sliding pin 802 back into the insertion hole.

[0064] The sliding plug 802 consists of a cylindrical plug, a rectangular slide bar, and an internal rectangular slot. The cylindrical plug penetrates the inner wall of the hollow frame, and its diameter corresponds to the diameter of the insertion hole. The rectangular slot is located in the lower half of the hollow frame, and the first inclined groove 8021 is located in the right side area of ​​the rectangular slot. The bottom end of the pressing block 803 is embedded in the rectangular slot, and the length of the rectangular slot is twice the length of the bottom end of the pressing block 803. The pressing block 803 consists of a rectangular slider and an outer horizontal plate. The initial position of the horizontal plate is located at the top wall of the rotating head 801 and fits against the top wall. The spring is located below the horizontal plate and is sleeved on the outside of the rectangular slider.

[0065] The size of the cylindrical plug matches the size of the socket inside the opening ring 7, and it also penetrates the interior of the hollow frame. That is to say, the cylindrical plug will pass through the interior of the hollow frame and insert into the interior of the socket to limit the rotation of the circular cover 4. The rectangular slot is set inside the rectangular slide bar, and its width corresponds to the width of the pressing block 803. Therefore, a part of the bottom end of the pressing block 803 can be embedded in the rectangular slot. Since the length of the rectangular slot is twice that of the bottom surface of the pressing block 803, the distance that the sliding post 802 shortens when the pressing block 803 is pressed and slid is sufficient to accommodate the pressing block 803 being inserted to the bottom. Since a horizontal plate is provided on the outside of the pressing block 803, and the horizontal plate can be connected to the upper end of the spring, the spring can be compressed normally when the pressing block 803 is pressed.

[0066] When using the ammeter, if an abnormal deviation of the pointer is detected, first press the pressing block 803 with your hand to push it. This will cause the pressing block 803 to slide inside the rotating head 801 and compress the spring. As the pressing block 803 moves, the first guide post 804 will also move and slide inside the first inclined groove 8021. The compression of the first guide post 804 will cause the sliding plug 802 to slide, thereby disengaging its plug from the opening ring 7. Inside the hole, the rotating head 801 can be rotated clockwise. When the rotating head 801 rotates, it will drive the circular cover 4 to rotate. At this time, the pressing block 803 can be released, and then the rotating head 801 can be rotated. After the circular cover 4 has rotated 180 degrees, the plug of the sliding pin 802 will correspond to another socket. At this time, the spring will release its elasticity, driving the pressing block 803 to reset. At this time, the plug of the sliding pin 802 will be inserted into the socket, limiting the circular cover 4 to this state.

[0067] At this time, the embedded block 6 is placed directly in front of the adjusting bolt. Push the rotating slide column 5 so that the rotating slide column 5 moves the embedded block 6 closer to the adjusting bolt. During the pushing process, the rotating slide column 5 rotates. When the embedded block 6 can be fully embedded inside the adjusting bolt, the circular stop on the front of the rotating slide column 5 can fit against the surface of the circular cover 4. At this time, simply rotate the rotating slide column 5 to make the embedded block 6 rotate, thereby driving the adjusting bolt to rotate, so that the pointer can be adjusted.

[0068] The sealing assembly of the electrical equipment with protective components can further protect the adjusting bolt from the influence of humid environment or dust. The inner wall of the annular shell 3 is provided with a second inclined groove 301 and a first surrounding groove 302 that are slidably connected to the second guide post 12. The front of the rubber ring 11 is a solid rubber block and the rear is a hollow ring structure. The outer wall of the ring structure gradually expands outward, and the expanded state is conical. The inner hollow diameter is larger than the diameter of the adjusting bolt.

[0069] When the second guide post 12 slides inside the second inclined groove 301, it drives the rubber ring 11 away from or close to the adjusting bolt. In this state, the second guide post 12 changes the position of the rubber ring 11.

[0070] The second inclined groove 301 is interconnected with the first surrounding groove 302, and the second inclined groove 301 is inclined from front to back in a counterclockwise state.

[0071] When the second inclined groove 301 and the first surrounding groove 302 guide the rubber ring 11, the rubber ring 11 moves forward and rotates to rotate and change position. The end of the first surrounding groove 302 is extended by a distance, which is the distance that the circular cover 4 rotates 180 degrees clockwise and then rotates. This distance is used to adjust the position of the baffle 13.

[0072] In use, after adjusting the pointer of ammeter 2, the direction can be reversed, that is, the circular cover 4 can be rotated counterclockwise. Similarly, pressing the pressing block 803 releases the limiting state of the circular cover 4. When the circular cover 4 rotates counterclockwise, it will be limited by the limiting post 10, causing the connecting plate 9 to rotate. As the connecting plate 9 rotates, it will cause the rubber ring 11 to rotate, gradually moving it towards the position of the adjusting bolt. At this time, the second guide post 12 will slide inside the first surrounding groove 302. When the rubber ring 11 is about to move in front of the adjusting bolt, the second guide post 12 is positioned... At the junction of the second inclined groove 301 and the second guide post 12, at the end of the counterclockwise rotation of the circular cover 4, when the circular cover 4 has been completely rotated, the second guide post 12 will slide inside the second inclined groove 301. While rotating and changing position, the rubber ring 11 moves closer to the surface of the ammeter 2. While covering the adjusting bolt, the rubber ring 11 is pushed and squeezed by the connecting plate 9 through the guidance of the second guide post 12 and the second inclined groove 301, so that it can fit tightly against the surface of the ammeter 2 and avoid gaps. At the same time, the circular cover 4 will be fixed, so the rubber ring 11 can always keep in a tight and deformed state.

[0073] The ventilation component of the electrical equipment with protective components solves the problem of condensation caused by the conflict between high temperature of the equipment and external humid environment. The top of the annular shell 3 is provided with a third inclined groove 303 and a second surrounding groove 304 that are slidably connected to the third guide post 14.

[0074] When the circular cover 4 rotates back and forth normally by 180 degrees, the third guide post 14 will be embedded inside the second surrounding groove 304, which will allow the baffle 13 to normally block the vent 401. When the circular cover 4 rotates clockwise further, the baffle 13 will enter the interior of the third inclined groove 303.

[0075] The circular cover 4 has a sliding groove for the baffle 13 to slide, and the length of the sliding groove is greater than the length of the baffle 13. The third inclined groove 303 and the second surrounding groove 304 are interconnected, and the connecting end of the third inclined groove 303 and the second surrounding groove 304 gradually tilts outward in a clockwise direction.

[0076] The length of the chute is greater than the length of the baffle 13, which allows the third guide post 14 to slide normally when it enters the interior of the third inclined groove 303, thus opening the vent hole 401. Since the third inclined groove 303 is inclined from the inside to the outside, the baffle 13 can move outward normally.

[0077] During use, when the equipment is at a high temperature and the external environment is low, condensation will occur inside the sealed annular shell 3. This condensation will also affect the inside of the rubber ring 11. At this time, the circular cover 4 can be rotated 180 degrees to make the rubber ring 11 move away from the adjusting bolt. After the circular cover 4 is rotated 180 degrees, it is then rotated clockwise. The third guide post 14, which is in the initial state, slides inside the second surrounding groove 304. At this time, the third guide post 14 will slide inside the third inclined groove 303, causing the third guide post 14 to start moving outward. The third guide post 14 will drag the baffle 13 outward, thereby opening the vent hole 401 on the surface of the circular cover 4. The opened vent hole 401 can ensure that the internal temperature of the annular shell 3 is connected to the external temperature, thereby preventing condensation and water accumulation inside the annular shell 3.

[0078] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0079] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0080] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0081] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0082] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0083] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An electrical device with protective components, characterized in that, include: A distribution cabinet (1), an ammeter (2) and an adjusting bolt, wherein the ammeter (2) is located in the distribution cabinet (1) and the adjusting bolt is located in the ammeter (2) for calibrating the pointer of the ammeter (2); An adjusting assembly includes an annular shell (3), a circular cover (4), a rotating slide (5), and an insert block (6). The annular shell (3) is located on the front of the ammeter (2). The circular cover (4) is rotatably located on the annular shell (3). The rotating slide (5) is slidably inserted through the circular cover (4) along the axial direction of the circular cover (4) and is rotatable relative to the circular cover (4). The insert block (6) is located at one end of the rotating slide (5) near the ammeter (2) for engaging with the nut of the adjusting bolt. A limiting component is provided between the circular cover (4) and the annular shell (3) to lock the circular cover (4) in the working position. When the circular cover (4) is rotated to the working position, the insert block (6) faces the adjusting bolt, and the rotating slide column (5) is pressed and rotated so that the insert block (6) is inserted into the nut of the adjusting bolt and can drive the adjusting bolt to rotate.

2. The electrical equipment with protective components according to claim 1, characterized in that, The limiting component includes: An opening ring (7) is disposed inside the annular shell (3) and has a positioning hole; A snap-fit ​​component (8) is provided on the circular cover (4). A portion of the snap-fit ​​component (8) is movable relative to the circular cover (4). When the circular cover (4) is rotated to the working position, a portion of the snap-fit ​​component (8) can be inserted into the positioning hole to lock the circular cover (4).

3. The electrical equipment with protective components according to claim 2, characterized in that, The snap-fit ​​component (8) includes: Rotating head (801), the rotating head (801) is inserted through the circular cover (4); A sliding post (802) passes through the rotating head (801) and is movable relative to the circular cover (4) in the radial direction of the circular cover (4). The sliding post (802) has a first inclined groove (8021). Pressing block (803), the pressing block is inserted through the rotating head (801) and is movable relative to the circular cover (4) along the axial direction of the circular cover (4); The first guide post (804) is disposed on the pressing block (803) and can be slidably fitted in the first inclined groove (8021); An elastic element (805) is disposed between the pressing block (803) and the inner wall of the rotating head (801) for resetting the pressing block (803). The movement of the pressing block (803) can drive the sliding pin (802) to move. The first guide post (804) slides along the first inclined groove (8021), forcing the sliding pin (802) to retract to release the lock. When the pressing block (803) is released, the elastic element (805) drives the pressing block (803) to reset, thereby causing the sliding pin (802) to extend and be inserted into the positioning hole.

4. The electrical equipment with protective components according to claim 1, characterized in that, It also includes a sealing assembly disposed on the circular cover (4) for sealing and protecting the adjusting bolt in the non-adjusting state, the sealing assembly comprising: A connecting plate (9) is axially slidably connected inside the circular cover (4) by a limiting post (10); A rubber ring (11) is provided on the side of the connecting plate (9) facing the ammeter (2); A guide component is provided between the annular shell (3) and the connecting plate (9) to drive the connecting plate (9) to move the rubber ring (11) toward the surface of the ammeter (2) and press it when the circular cover (4) is reset and rotated.

5. The electrical equipment with protective components according to claim 4, characterized in that, The guide component includes: The second guide post (12) is located on the connecting plate (9). The inner wall of the annular shell (3) has a second inclined groove (301) and a first surrounding groove (302). The second inclined groove (301) and the first surrounding groove (302) are interconnected. The second guide post (12) is slidably fitted between the second inclined groove (301) and the first surrounding groove (302). When the circular cover (4) is reset and rotated, the second guide post (12) first slides circumferentially in the first surrounding groove (302) and then slides axially in the second inclined groove (301), so that the rubber ring (11) moves closer to and presses against the surface of the ammeter (2) during the synchronous process of rotation reset.

6. The electrical equipment with protective components according to claim 1, characterized in that, It also includes a ventilation assembly disposed on the circular cover (4) for communicating the interior of the annular shell (3) with the external environment, the ventilation assembly comprising: A baffle (13) is slidably disposed inside the circular cover (4). The circular cover (4) has a vent hole (401). The baffle (13) is used to block or open the vent hole (401). A driving component is disposed between the annular shell (3) and the baffle (13) for driving the baffle (13) to slide to open the vent (401) when the circular cover (4) continues to rotate past the working position.

7. The electrical equipment with protective components according to claim 6, characterized in that, The driving component includes: The third guide post (14) is disposed on the baffle (13). The annular shell (3) has a third inclined groove (303) and a second surrounding groove (304). The third inclined groove (303) and the second surrounding groove (304) are interconnected. The third guide post (14) is slidably engaged between the third inclined groove (303) and the second surrounding groove (304). When the circular cover (4) is adjusted and rotated, the third guide post (14) slides in the second surrounding groove (304). When the circular cover (4) continues to rotate, the third guide post (14) enters the third inclined groove (303) and drives the baffle (13) to slide, thereby opening the vent (401).

8. The electrical equipment with protective components according to claim 1, characterized in that, The rotating slide (5) consists of two circular blocks, a circular rod connecting the two blocks, and a screw block located at the end away from the ammeter (2). The two circular blocks are located on both sides of the circular cover (4), and the circular rod slides through and is rotatably connected to the circular cover (4).

9. The electrical equipment with protective components according to claim 2, characterized in that, The positioning hole has two holes, which are symmetrically arranged on the opening ring (7). The two positioning holes correspond to the initial locking position and the working position after rotating 180 degrees of the circular cover (4), respectively.

10. The electrical equipment with protective components according to claim 4, characterized in that, The end of the rubber ring (11) near the ammeter (2) is a hollow conical flared structure. The internal hollow diameter of the rubber ring (11) is larger than the diameter of the adjusting bolt, so as to form a tighter fit with the surface of the ammeter (2) when pressed.

Images