An assembled low-voltage quick access box

Abstract

The application discloses an assembled low-voltage quick access box, and relates to the technical field of power equipment, which comprises a box body, sockets arranged on the box body in an array, and plugs movably plugged into the sockets, further comprises a dust falling assembly arranged in the sockets in an equiangular manner and based on the plugs to expand, shake and fall dust, elastic reset assemblies arranged at the openings and backs of the sockets respectively to elastically reset the dust falling assembly to expand and contract, and a dust collecting plate slidingly arranged in the sockets; the dust falling assembly comprises a limiting plate fixedly connected to one end of the socket and a clamping piece slidingly arranged on one side of the limiting plate to extrude, expand, shake and fall dust based on the plugs, and vibration grooves are arranged on the limiting plate in an equiangular manner. Through the application, the problem that dust or metal powder is left in the interface of the existing quick access box due to environmental dust invasion, plugging friction and plating oxidation and the like during long-term butt joint use is solved.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, specifically to a prefabricated low-voltage fast access box. Background Technology

[0002] Prefabricated low-voltage fast connection boxes are used for power distribution and control of electrical equipment, while providing power outage protection in case of overload, short circuit, and leakage. They feature rapid connection capabilities; for example, in some emergency scenarios, they can quickly connect emergency generators to the city power grid via plug-and-socket interfaces.

[0003] For example, a low-voltage emergency access device for a generator truck, disclosed in CN105449828A, enables live-line operation. Its structure is simple and can solve the problem of limited cable length in generator trucks, allowing generator trucks to be connected to the user's low-voltage busbar safely, reliably, and quickly. However, existing low-voltage fast access boxes still have some shortcomings.

[0004] During long-term use, existing quick-access box interfaces can accumulate dust or metal powder inside due to environmental dust intrusion, insertion and removal friction, and plating oxidation. First, this dust adheres to the conductive contact surfaces of the interface (such as rollers and plug metal pieces), increasing contact resistance. When energized, abnormal heating occurs due to the Joule effect, which may lead to aging and melting of the insulation layer over time, and even cause a fire. Second, if the dust contains conductive impurities (such as metal oxide powder), it may form conductive channels between different electrodes of the interface, causing phase-to-phase short circuits or leakage to ground, triggering the leakage current protection device to malfunction, and even posing a risk of electric shock to personnel.

[0005] To address the aforementioned issues, there is an urgent need for innovative design based on the existing prefabricated low-voltage rapid access box. Summary of the Invention

[0006] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide a prefabricated low-voltage fast access box to solve the problem mentioned in the background art where, during long-term use, existing fast access box interfaces suffer from residual dust or metal powder inside the interface due to environmental dust intrusion, insertion and removal friction, and plating oxidation.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated low-voltage fast access box, including a box body, sockets arrayed on the box body, and plugs movably plugged into the sockets, and further including a dust collection component that is equally distributed in the sockets and expands and vibrates to collect dust based on plug insertion and removal, an elastic reset component that is respectively disposed at the socket opening and the back for elastically resetting the expansion and contraction of the dust collection component, and a dust collection plate that is slidably disposed in the socket, can be removed by plug traction, and has elastic reset function. The dust collection component includes a limiting plate fixedly connected to one end of the plug and a clamping lever slidably disposed on one side of the limiting plate for vibration dust collection based on plug compression. The limiting plate is provided with vibration grooves distributed at equal angles. The elastic reset assembly includes a slide rod fixedly connected to one end of the clamping paddle and disposed in the vibration groove, a slider fixedly connected to one end of the slide rod, and a connecting piece disposed on the outer wall of the clamping paddle.

[0008] Preferably, the dust collection component further includes a limiting groove formed on the inner wall of one end of the clamping lever, the limiting groove being used to assist in fitting the plug and fixing it in the socket.

[0009] Preferably, the elastic reset assembly further includes a third spring fixedly connected to the top of the slider and a first spring fixedly connected to the top of the connecting piece.

[0010] Preferably, the bottom of the socket is provided with a dust collection groove, which is located directly below the clamping lever, and the two sides of the dust collection groove are inclined.

[0011] Preferably, the ash collection plate is slidably disposed in the ash collection trough, and one end of the ash collection plate is fixedly connected to a traction spring arranged at equal angles, while the inner wall of the other end is fixedly connected to a lever arranged symmetrically.

[0012] Preferably, the surface of the dust collection plate is inclined to allow dust to be discharged from high to low.

[0013] Preferably, a circular metal piece is fixedly connected to one end of the plug, and shrink grooves are formed on both sides of one end of the circular metal piece. A pressure plate is slidably arranged in the shrink groove, and a shrink rod is fixedly connected to one end of the pressure plate. The end of the shrink rod contacts the lever, and a second spring is provided between the pressure plate and the inner wall of the shrink groove.

[0014] Preferably, the outer wall of the other end of the circular metal sheet is fitted with a toggle ring, which is adapted to the limiting groove.

[0015] Preferably, the two side openings of the limiting groove are arc-shaped surfaces for the actuating ring to be removed by force.

[0016] Preferably, the initial groove of the vibration groove is a vertical groove, and the middle part is a curved groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. When the plug is inserted into the socket, the circular metal piece at its end is inserted into the socket simultaneously with the plug. The actuating ring on its outer wall initially contacts the clamping plate, causing the clamping plate to expand. The sliding rod at one end of the clamping plate slides in the vibration groove. The sliding rod moves linearly in the vertical groove, and then contacts the curved groove, forcing the clamping plate to vibrate slightly, shaking off the dust or interface plating powder adhering to its surface. The shaken dust falls into the dust collection groove at the bottom of the socket. The inclined groove of the dust collection groove can help guide the dust to fall onto the dust collection plate with the pressure generated when the plug is inserted. When the plug is pulled out, the end of the retracting rod squeezes the lever, pulling the dust collection plate to slide out along the dust collection groove. After the dust collection plate is removed, its inclined surface design uses gravity to make the dust slide from the high position to the outside, completing the cleaning. 2. When the plug is fully inserted, the elastic reset component is activated. The third spring at the top of the slider and the first spring at the top of the connecting piece work together to push the slide bar and the clamping plate back to their original positions, so that the clamping plate fits tightly against the outer wall of the plug and is fixed by the limiting groove, forming a self-locking effect to prevent the plug from loosening. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the fast access box of the present invention.

[0019] Figure 2 This is a schematic diagram of the plug and socket connection state of the present invention.

[0020] Figure 3 This is a schematic diagram of the plug being pulled out and the dust collection plate structure of the present invention.

[0021] Figure 4 This is a cross-sectional view of the plug insertion state and the socket portion of the present invention.

[0022] Figure 5 This is a schematic diagram of the socket structure of the present invention from another angle.

[0023] Figure 6 This is a schematic diagram of the plug structure of the present invention.

[0024] Figure 7 for Figure 5 An enlarged schematic diagram of the structure at point A.

[0025] Figure 8 for Figure 5 Enlarged schematic diagram of the structure at point B.

[0026] In the diagram: 1. Box body; 2. Socket; 3. Plug; 301. Circular metal piece; 4. Dust collection plate; 401. Toggle lever; 5. Clamping lever; 6. Limiting groove; 7. Toggle ring; 8. First spring; 801. Connecting piece; 9. Retraction rod; 901. Pressure plate; 10. Second spring; 11. Dust collection groove; 12. Limiting plate; 13. Vibration groove; 14. Sliding rod; 15. Sliding block; 16. Third spring. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1 to 8 The present invention provides a technical solution: a prefabricated low-voltage fast access box, including a box body 1, sockets 2 arrayed on the box body 1 and plugs 3 movably plugged into the sockets 2, and also includes a dust collection component that is distributed at equal angles in the sockets 2 and expands and vibrates to collect dust based on the plugs 3 being inserted and removed, an elastic reset component that is respectively disposed at the opening and the back of the sockets 2 for elastically resetting the expansion and contraction of the dust collection component, and a dust collection plate 4 that is slidably disposed in the sockets 2 and can be removed by the pull of the plugs 3 and has elastic reset function. The dust collection assembly includes a limiting plate 12 fixedly connected to one end of the socket 2 and a clamping paddle 5 slidably disposed on one side of the limiting plate 12 for vibration dust collection based on the squeezing and expansion of the plug 3. The limiting plate 12 is provided with vibration grooves 13 distributed at equal angles. The elastic reset assembly includes a slide rod 14 fixedly connected to one end of the clamping paddle 5 and disposed in the vibration groove 13, a slider 15 fixedly connected to one end of the slide rod 14, and a connecting piece 801 disposed on the outer wall of the clamping paddle 5.

[0029] In this embodiment, when the plug 3 is inserted into the socket 2, the plug 3 first triggers the clamping paddle 5 in the dust collection assembly to slide and expand from the vibration groove 13. Simultaneously, the clamping paddle 5 slides and generates slight vibration through the vibration groove 13, causing the dust or plating powder retained after the interface connection on the clamping paddle 5 to be shaken off. The dust then falls to the bottom of the socket 2 (while the plug 3 is still being inserted into the socket 2, the internal gap of the socket 2 is compressed during the insertion process, allowing the dust falling to the bottom of the socket 2 to enter the dust collection plate 4 for dust collection with the help of the pressure from the insertion of the plug 3). After the plug 3 is fully inserted into the socket 2, the clamping paddle 5 is reset by the elastic reset assembly and tightly adheres to the plug 3. The outer wall also has a certain self-locking effect on the plug 3. When the plug 3 needs to be pulled out, the plug 3 is pulled outward. When the plug 3 is pulled out, the clamping paddle 5 is driven to slide in the vibration groove 13 again, and the clamping paddle 5 vibrates again, shaking the dust back onto the dust collection plate 4. The dust collection plate 4 is taken out synchronously with the plug 3 during the process of being pulled out (the dust collection plate 4 has a reset structure at one end, and its stress design is slightly small. When the dust collection plate 4 slides to the limit of the stress of the reset structure, the reset structure will squeeze the traction structure on both sides of the plug 3, so that the dust collection plate 4 is reset back into the socket 2 after the plug 3 is pulled out). In addition, when the dust collection plate 4 is taken out, the dust on its surface can be discharged from the socket 2, thus completing the entire dust cleaning process.

[0030] The dust collection assembly also includes a limiting groove 6 formed on the inner wall of one end of the clamping lever 5. The limiting groove 6 is used to assist in fitting the plug 3 and fixing it in the socket 2.

[0031] In this embodiment, when the plug 3 is inserted into the socket 2 and the clamping paddle 5 is reset and tightly attached to the outer wall of the plug 3 under the action of the elastic reset component, the limiting groove 6 can play an auxiliary role in attaching with the outer wall of the plug 3, further enhancing the fixing effect of the plug 3 in the socket 2, and effectively preventing the plug 3 from loosening or falling off due to external factors (such as slight vibration, pulling, etc.) during use.

[0032] The elastic reset assembly also includes a third spring 16 fixedly connected to the top of the slider 15 and a first spring 8 fixedly connected to the top of the connecting piece 801.

[0033] In this embodiment, a third spring 16 is fixedly connected to the top of the slider 15. The third spring 16 provides elastic restoring force for the slider 15 to slide within the vibration groove 13, ensuring that the slider 15 can quickly return to its original position under the action of the third spring 16 after being moved by an external force. At the same time, a first spring 8 is fixedly connected to the top of the connecting piece 801. The first spring 8 can cooperate with the third spring 16 to assist the clamping piece 5 in achieving stable elastic return after completing the expansion vibration dust removal action, so that the clamping piece 5 can fit tightly against the outer wall of the plug 3.

[0034] A dust collection groove 11 is provided at the bottom of the socket 2. The dust collection groove 11 is located directly below the clamping lever 5, and the two sides of the dust collection groove 11 are inclined.

[0035] In this embodiment, the dust collection trough 11 is located directly below the clamping lever 5, ensuring that when the clamping lever 5 vibrates due to the insertion and removal of the plug 3, causing dust or plating powder to fall off, the dust can fall smoothly into the dust collection trough 11. In addition, the two sides of the dust collection trough 11 are designed with an inclined shape, so that when the plug 3 is still inserted into the socket 2, the internal gap of the socket 2 is compressed due to the insertion process of the plug 3, so that the dust falling at the bottom of the socket 2 is guided by the pressure of the plug 3 insertion to better gather into the dust collection trough 11, avoiding the accumulation of dust around the opening, and further improving the dust collection effect.

[0036] The ash collection plate 4 is slidably disposed in the ash collection trough 11. One end of the ash collection plate 4 is fixedly connected to a traction spring that is distributed at equal angles, and the inner wall of the other end is fixedly connected to a lever 401 that is symmetrically distributed.

[0037] The surface of the dust collection plate 4 is inclined to allow dust to be discharged from high to low.

[0038] In this embodiment, the reset structure at one end of the ash collection plate 4 is a traction spring. When the plug 3 is pulled out and pulls the lever 401 on the inner wall of the ash collection plate 4, causing the lever 401 to drive the ash collection plate 4 to be taken out synchronously, the traction spring undergoes elastic deformation due to the sliding of the ash collection plate 4 and stores elastic potential energy. When the ash collection plate 4 slides to the stress limit of the traction spring, the lever 401 compresses the traction structures on both sides of the plug 3 and causes them to contract. Subsequently, the traction spring provides elastic restoring force to the ash collection plate 4 through elastic reset, causing it to reset back into the ash collection groove 11 in the socket 2.

[0039] One end of the plug 3 is fixedly connected to a circular metal piece 301. Shrinkage grooves are provided on both sides of one end of the circular metal piece 301. A pressure plate 901 is slidably arranged in the shrinkage groove. A shrinkage rod 9 is fixedly connected to one end of the pressure plate 901. The end of the shrinkage rod 9 is in contact with the lever 401. A second spring 10 is provided between the pressure plate 901 and the inner wall of the shrinkage groove.

[0040] A toggle ring 7 is fitted on the outer wall of the other end of the circular metal sheet 301, and the toggle ring 7 is adapted to the limiting groove 6.

[0041] The two side openings of the limiting groove 6 are specifically arc-shaped surfaces for the actuating ring 7 to be removed by force.

[0042] In this embodiment, when the plug 3 is inserted into the socket 2, the circular metal piece 301 moves synchronously with the plug 3, driving the toggle ring 7 into the limiting groove 6, and achieving initial positioning by contacting and adapting with the arc-shaped surface of the limiting groove 6; at the same time, the retracting rod 9 contacts and retracts with one side of the toggle rod 401 during the insertion of the plug 3, and the pressure plate 901 compresses the second spring 10. When plug 3 is fully inserted, the second spring 10 returns to its original position, pushing the pressure plate 901 and the retraction rod 9 back to their original positions, ensuring that the retraction rod 9 is located on the other side of the lever 401. When plug 3 needs to be pulled out, plug 3 is pulled outward, and the circular metal piece 301 drives the lever ring 7 to disengage from the limiting groove 6. At the same time, the retraction rod 9 slides due to the pulling action of plug 3, synchronously driving the lever 401 to move outward, thereby causing the dust collection plate 4 to slide out and squeeze the traction spring. When the stress of the traction spring reaches its limit, the lever 401 begins to squeeze the retraction rod 9, causing it to retract into the retraction groove, thereby causing the dust collection plate 4 to return to the dust collection groove 11 through the traction spring, and the plug 3 is disengaged from the socket 2.

[0043] The initial slide of the vibration groove 13 is a vertical slide, and the middle part is a curved slide.

[0044] In this embodiment, when the clamping paddle 5 slides vertically through the vertical groove during the initial sliding, and when a certain gap is generated after each clamping paddle 5 has initially slid, the slide rod 14 at one end contacts the curved groove, thereby causing the clamping paddle 5 to start vibrating, thereby shaking the dust on the clamping paddle 5 onto the dust collection plate 4 in the dust collection groove 11.

[0045] Working principle: When using this prefabricated low-voltage fast access box, 1. Insertion stage: When the plug 3 is inserted into the socket 2, the circular metal piece 301 at its end is inserted into the socket 2 synchronously with the plug 3. The actuating ring 7 on its outer wall initially contacts the clamping plate 5, causing the clamping plate 5 to expand. The slide rod 14 at one end of the clamping plate 5 slides in the vibration groove 13. The slide rod 14 moves linearly in the vertical slide groove. Then the slide rod 14 contacts the curved slide groove, forcing the clamping plate 5 to vibrate slightly, shaking off the dust or interface plating powder attached to its surface. The shaken dust falls into the dust collection groove 11 at the bottom of the socket 2. The inclined groove of the dust collection groove 11 can assist in guiding the dust to fall onto the dust collection plate 4 with the pressure generated when the plug 3 is inserted. 2. State after full insertion: When plug 3 is fully inserted, the elastic reset component starts to reset. The third spring 16 at the top of slider 15 and the first spring 8 at the top of connecting piece 801 work together to push slide rod 14 and clamping paddle 5 back to their original positions, so that clamping paddle 5 fits tightly against the outer wall of plug 3 and is fixed by limiting groove 6 to form a self-locking effect and prevent plug 3 from loosening. 3. Unplugging Stage: When plug 3 needs to be unplugged, pull plug 3 outward. The circular metal piece 301 drives the actuating ring 7 to disengage from the limiting groove 6 (the arc surface reduces resistance). At the same time, the retraction rod 9 slides due to the movement of plug 3. When plug 3 is unplugged, it re-drives the clamping actuating piece 5 to slide, generating secondary vibration through the vibration groove 13, which shakes the residual dust onto the surface of the dust collection plate 4. The end of the retraction rod 9 presses against the actuating rod 401, pulling the dust collection plate 4 to slide out along the dust collection groove 11. The traction spring reset structure is stretched and stores elastic potential energy. When the dust collection plate 4 slides to the stress limit of the traction spring, the actuating rod 401 pushes the retraction rod 9 back, causing it to retract into the retraction groove. The traction spring releases its elastic potential energy, pushing the dust collection plate 4 to automatically reset into the dust collection groove 11. 4. Final stage: After the dust collection plate 4 is removed, its inclined surface design uses gravity to make the dust slide from the high position to the outside, completing the cleaning. After the plug 3 is completely unplugged, each component returns to its initial position through the elastic reset component, ready for the next use.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A prefabricated low-voltage fast access box, comprising a box body (1), sockets (2) arrayed on the box body (1), and plugs (3) movably connected to the sockets (2), characterized in that: It also includes a dust collection component that is distributed at equal angles in the socket (2) and expands and vibrates to collect dust based on the insertion and removal of the plug (3); an elastic reset component that is respectively set at the opening of the socket (2) and the back for elastic reset of the dust collection component expansion and contraction and closure; and a dust collection plate (4) that is slidably set in the socket (2) and can be taken out by the pull of the plug (3) and has elastic reset. The dust collection assembly includes a limiting plate (12) fixedly connected to one end of the socket (2) and a clamping paddle (5) slidably disposed on one side of the limiting plate (12) for vibrating dust collection based on the plug (3) pressing and expanding. The limiting plate (12) is provided with vibration grooves (13) distributed at equal angles. The elastic reset assembly includes a slide rod (14) fixedly connected to one end of the clamping paddle (5) and disposed in the vibration groove (13), a slider (15) fixedly connected to one end of the slide rod (14), and a connecting piece (801) disposed on the outer wall of the clamping paddle (5). The ash collection plate (4) is slidably disposed in the ash collection trough (11). One end of the ash collection plate (4) is fixedly connected to a traction spring that is distributed at equal angles, and the inner wall of the other end is fixedly connected to a lever (401) that is symmetrically distributed. A pressure plate (901) is slidably disposed in the shrink groove at one end of the plug (3), and the end of the shrink rod (9) at one end of the pressure plate (901) is in contact with the lever (401). The initial groove of the vibration groove (13) is a vertical groove, and its middle part is a curved groove.

2. The prefabricated low-voltage fast access box according to claim 1, characterized in that: The dust collection component also includes a limiting groove (6) formed on the inner wall of one end of the clamping lever (5), the limiting groove (6) being used to assist in fitting the plug (3) and fixing it in the socket (2).

3. The prefabricated low-voltage fast access box according to claim 1, characterized in that: The elastic reset assembly also includes a third spring (16) fixedly connected to the top of the slider (15) and a first spring (8) fixedly connected to the top of the connecting piece (801).

4. The prefabricated low-voltage fast access box according to claim 1, characterized in that: The bottom of the socket (2) is provided with a dust collection groove (11), which is located directly below the clamping lever (5), and the two sides of the dust collection groove (11) are inclined.

5. A prefabricated low-voltage fast access box according to claim 1, characterized in that: The surface of the dust collection plate (4) is inclined to allow dust to be discharged from high to low.

6. The prefabricated low-voltage fast access box according to claim 1, characterized in that: One end of the plug (3) is fixedly connected to a circular metal piece (301), and shrinkage grooves are provided on both sides of one end of the circular metal piece (301). One end of the pressure plate (901) is fixedly connected to a shrinkage rod (9), and a second spring (10) is provided between the pressure plate (901) and the inner wall of the shrinkage groove.

7. A prefabricated low-voltage fast access box according to claim 6, characterized in that: The outer wall of the other end of the circular metal sheet (301) is fitted with a toggle ring (7), which is adapted to the limiting groove (6).

8. A prefabricated low-voltage fast access box according to claim 7, characterized in that: The two sides of the limiting groove (6) are specifically arc-shaped surfaces for the actuating ring (7) to be removed by force.

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