Lifting type safety socket for dormitory

Abstract

The application discloses a lifting type safety socket for dormitory and relates to the field of sockets for dormitory.The socket comprises a mounting box, the mounting box is installed below the desktop of the dormitory, a lifting box is slidingly connected in the mounting box and can be kept in the extended state by the limiting structure after extending out of the desktop, a plug-in box is embedded in the mounting groove of the lifting box through the locking structure, an overload protector is arranged in the lifting box, the reset button of the overload protector can release the locking of the plug-in box by the locking structure after being popped out, the plug-in box can leave the mounting groove after the locking structure is released, and the lifting box can descend back into the mounting box after the plug-in box leaves the mounting groove.When the electric power exceeds the threshold value, the overload protector in the lifting box automatically cuts off the power supply, and the lifting box is collected into the mounting box after the plug-in box is popped out, so that the accurate control of the electric power of each bed in the dormitory is realized at a low cost.

Description

Technical Field

[0001] This invention relates to the field of dormitory sockets, specifically a retractable safety socket for dormitory use. Background Technology

[0002] In universities and many boarding secondary schools, students usually live in dormitories. A dormitory building can often accommodate hundreds of students. Some students use high-power electrical appliances such as electric kettles, induction cookers, and electric water cups in their dormitories. These devices can easily overload the power supply lines, which may not only cause the lines to overheat or even catch fire, causing damage to school property, but more seriously, it may directly threaten the students' lives.

[0003] Existing technologies include installing distribution boxes on each floor of the dormitory and installing smart meters corresponding to each dormitory room inside the distribution boxes. When illegal electricity use is detected, the power may be cut off briefly and then automatically restored to issue a warning, or the device may be locked after multiple violations, requiring remote or on-site reset by the administrator. In addition, existing technologies also include equipping each student's bed with a power strip with overload protection. When the electrical equipment connected to the power strip exceeds the rated load, the overload protector built into the power strip will automatically cut off the power. When reconnection is required, simply press the pop-up button on the overload protector.

[0004] Regarding the aforementioned technologies, smart meters typically monitor electricity usage throughout the entire dormitory room, making it impossible to accurately intervene in the electricity consumption of each individual bed. Installing a separate smart meter for each bed presents challenges such as complex wiring, high costs, and difficult maintenance. While power strips with overload protectors are cheaper, the reset buttons on these protectors are easily pressed by students, rendering the safety protection ineffective. Furthermore, power strips placed near beds for extended periods pose risks of tangling, pulling, moisture accumulation, and dust buildup, maintaining a significant fire risk.

[0005] In conclusion, existing solutions for safety sockets in dormitories are insufficient for achieving cost-effective control over electricity usage at each bed. Summary of the Invention

[0006] Therefore, the purpose of this invention is to provide a liftable safety socket for dormitories, which addresses the technical problem that existing dormitory safety socket solutions cannot achieve low-cost control over electricity usage at each bed in a dormitory.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a retractable safety socket for dormitories, comprising an installation box installed under the desktop of the dormitory, a retractable box slidably connected within the installation box, and a retaining structure that limits its extension after it extends upwards from the desktop, and a plug box embedded in the installation slot of the retractable box via a locking structure. The retractable box is equipped with an overload protector; when the reset button of the overload protector pops out, it releases the locking structure from the plug box. After the locking structure is released, the plug box can leave the installation slot, and the retractable box returns to the installation box after leaving the installation slot.

[0008] By adopting the above technical solution, when the power consumption exceeds the threshold, the overload protector located in the lifting box will automatically cut off the power. At the same time, the lifting box will retract into the installation box after popping out of the power box, realizing a dual response of physical isolation and electrical protection. This effectively prevents students from resetting the operation without authorization and achieves precise control of the power consumption of each bed in the dormitory at a low cost.

[0009] The invention is further configured such that a fixed box is connected to the inner wall of the mounting box, a telescopic block is horizontally slidably connected inside the fixed box, an elastic component is provided on the telescopic block facing the inner wall of the fixed box, a moving rod is provided inside the lifting box, the bottom end of the moving rod extends out of the lifting box and is fixedly connected to a limiting block, a chamfer is provided between the limiting block and the telescopic block, and a chamfer is fixedly connected to the outer wall of the lifting box to limit the upward sliding of the lifting box. When the lifting box is restricted from sliding upward by the limiting protrusion, the telescopic block simultaneously cooperates with the limiting block to limit the downward sliding of the lifting box.

[0010] Preferably, when the lifting box extends out of the mounting box, the telescopic block and the limiting boss are used to limit the lifting box to ensure that it is stable at a height above the table.

[0011] The invention is further configured such that a lifting block is provided inside the lifting box near the overload protector, a top cap is fixedly connected to the top of the reset button of the overload protector, the lifting block is provided with an inclined surface for contacting the top cap, and locking strips are fixedly connected to both sides, a third compression spring is provided between the bottom end of the lifting block and the lifting box, the plug box is provided with a mating port facing the lifting block, and a blocking strip is provided on the inner wall of the mating port facing the lifting block for cooperating with the locking strip, and the locking strip can disengage from the blocking strip after the lifting block is pushed upward by the reset button of the overload protector.

[0012] Preferably, the locking bar and the blocking bar work together to make the overload protector pop out of the power box after exceeding the predetermined power.

[0013] The invention is further configured such that a waist-shaped hole is provided in the vertical direction inside the lifting box, the moving rod is movably installed in the waist-shaped hole, the lifting box is slidably connected to a top post for contacting the plug-in box along the radial direction of the moving rod, and a first compression spring in a compressed state is provided at the position of the top post at the other end of the moving rod. When the moving rod is close to one end of the first compression spring in the waist-shaped hole, the limiting block can contact the telescopic block. When the moving rod is close to one end of the top post in the waist-shaped hole, the limiting block cannot contact the telescopic block, and the plug-in box can be pushed out of the mounting groove.

[0014] Preferably, when the plug box is unlocked, the plug box will be pushed away from the mounting slot by the top post.

[0015] The present invention is further configured such that the bottom end of the mounting box is provided with a wire-passing hole for the wire to pass through, and a longitudinal mounting platform is installed above the wire-passing hole. A transverse mounting platform is installed above the longitudinal mounting platform of the mounting box. When the lifting box is retracted, the top surface of the lifting box is flush with the top of the mounting box, and the bottom end is supported by the transverse mounting platform.

[0016] Preferably, the horizontal mounting platform is used to support the lifting box.

[0017] The invention is further configured such that a tension spring is provided between the top surface of the longitudinal mounting platform and the bottom end of the lifting box, a notch is provided on the transverse mounting platform for the tension spring to pass through, and a decorative pressure ring is connected to the top end of the mounting box.

[0018] Preferably, the tension spring helps the lifting box return to its initial position more quickly.

[0019] The invention is further configured such that the top of the lifting box is provided with a vertically penetrating insertion hole that connects to the outside and the waist-shaped hole, and an operating rod can be inserted into the insertion hole. Two protrusions are fixedly connected to the side wall of the operating rod along the diameter. The two protrusions are arranged circumferentially at a distance of 180 degrees. The insertion hole is provided with a through groove in the vertical direction for the protrusions to slide. The bottom end of the insertion hole is provided with a first annular groove with a diameter larger than the diameter of the insertion hole itself, and the protrusions can enter the first annular groove.

[0020] Preferably, the lifting box can be lifted from the mounting box by inserting the operating lever into the socket and rotating it.

[0021] The present invention is further configured such that a first convex ring with a diameter greater than the diameter of the moving rod is fixedly connected to the top end of the moving rod, the top surface of the first convex ring is provided with a convex ring groove along its own radial direction, the bottom end of the operating rod is fixedly connected with a convex strip for cooperating with the convex ring groove, and the top end is fixedly connected with a handle for gripping, and the stroke of the convex block in the first ring groove along the vertical direction is greater than the depth of the convex ring groove.

[0022] Preferably, rotating the moving rod with the operating lever can also disengage the telescopic block from the limiting block, thereby retracting the lifting box into the mounting box without the need for the plug box to pop out.

[0023] The present invention is further configured such that the top and bottom surfaces of the power box are provided with a first mating inclined surface and a second mating inclined surface that are mirror images of each other, the top of the first mating inclined surface is provided with a snap-fit ​​platform, the top of the lifting box is provided with a protrusion for snap-fitting with the snap-fit ​​platform, and the area of ​​the power supply device plug-in surface of the power box is larger than the area facing the top column surface.

[0024] Preferably, the plug box is kept stably in the mounting slot before the locking structure is unlocked.

[0025] The present invention is further configured such that the lifting box has two concave conductive contacts at a position facing the second mating inclined surface, and the plug box has a conductive spring at the position corresponding to the conductive contacts. When the plug box is located in the mounting groove, the conductive spring is in an elastic deformation state.

[0026] Preferably, current is transmitted by utilizing the contact between the conductive spring and the conductive contact point.

[0027] In summary, the present invention has the following main beneficial effects:

[0028] This invention installs an installation box on the underside of the desk corner in the dormitory, and installs a power plug box on a lifting box that can extend vertically out of the desktop inside the installation box. When the power consumption exceeds the threshold, the overload protector located in the lifting box automatically cuts off the power. At the same time, the lifting box retracts into the installation box after popping out the power plug box. This achieves a dual response of physical isolation and electrical protection, effectively preventing students from resetting the device without authorization, and achieving precise control of the power consumption of each bed in the dormitory at a low cost.

[0029] This invention provides a perforation at the top of the lifting box. By inserting an operating rod into the perforation and rotating it, the lifting box can be manually controlled to retract into the installation box without popping out the socket box. This allows the socket to be completely concealed during students' holidays away from school, effectively reducing the risk of dust accumulation, moisture, and accidental contact.

[0030] This invention uses a linkage design between the pop-out action of the power plug box and the descent action of the lifting box. When the overload protector is triggered, the power plug box will be de-energized. At this time, if the power plug box is restricted by factors such as being bound by tape or books piled on the desktop and cannot pop out smoothly, the lifting box will not retract into the installation box, thus avoiding damage to the plug of the electrical equipment due to the sudden descent of the lifting box.

[0031] This invention requires a lever to be inserted into the socket and rotated to smoothly control the lifting box to rise, thereby resetting the power box. The lever is normally kept by the dormitory staff. After the power consumption exceeds the threshold and the power is cut off, students must have it checked on-site by the dormitory staff and confirmed that the potential hazard has been eliminated before it can be reset and used. This eliminates the possibility of students restoring the power supply on their own, further strengthens the standardization and authority of dormitory electricity management, and effectively protects the safety of students' lives and property and the long-term stability of campus electricity order. Attached Figure Description

[0032] Figure 1 This is a perspective view of the invention installed at the corner of a dormitory desk, with the lifting box in the raised state;

[0033] Figure 2 This is a perspective view of the invention installed at the corner of a dormitory desk, with the lifting box in the lowered state;

[0034] Figure 3 This is a schematic diagram of the bottom structure of the mounting box when the present invention is installed at the corner of a dormitory desk;

[0035] Figure 4 This is a perspective view of the lifting box of the present invention in the raised state;

[0036] Figure 5 A perspective view of the internal structure of the lifting box and the mounting box when the lifting box of the present invention is in the raised state;

[0037] Figure 6 For the present invention Figure 5 Enlarged view of A in the middle;

[0038] Figure 7 For the present invention Figure 5 Enlarged view of B in the middle;

[0039] Figure 8 For the present invention Figure 5 Enlarged view of C;

[0040] Figure 9 This is a perspective view of the internal structure of the mounting box of the present invention;

[0041] Figure 10 This is a perspective view of the back structure of the power box of the present invention;

[0042] Figure 11 This is a schematic diagram of the plug box of the present invention popping out of the lifting box;

[0043] Figure 12 For the present invention Figure 11 Enlarged view of D;

[0044] Figure 13The present invention is shown in a perspective view of the state after the power box pops out of the lifting box and the lifting box descends and retracts into the mounting box;

[0045] Figure 14 This is a perspective view of the internal structure of the lifting box, showing the disassembled state of the moving rod and the lifting box of the present invention.

[0046] Figure 15 For the present invention Figure 14 Enlarged view of E in the middle;

[0047] Figure 16 A perspective view of the internal structure of the lifting box, showing the movable box and the lifting box of the present invention in their unseparated state;

[0048] Figure 17 For the present invention Figure 16 Enlarged view of F in the middle;

[0049] Figure 18 A perspective view of the lifting box being manually lowered after the operating lever of the present invention is inserted into the socket without popping out the power box;

[0050] Figure 19 For the present invention Figure 18 Enlarged view of G in the middle;

[0051] Figure 20 This is a perspective view of the state where the lifting box retracts into the mounting box without popping out the power box after the operating lever of the present invention is inserted into the socket;

[0052] Figure 21 For the present invention Figure 20 Enlarged view of H in the middle;

[0053] Figure 22 This is a perspective view of the lifting box retracted into the mounting box and the power plug box not being ejected, according to the present invention.

[0054] Figure 23 For the present invention Figure 22 Enlarged view of I;

[0055] Figure 24 This is a perspective view of the operating lever of the present invention.

[0056] Explanation of reference numerals in the attached figures:

[0057] 1. Mounting box; 101. Wiring hole; 2. Lifting box; 201. Mounting groove; 202. Waist-shaped hole; 203. Socket; 204. Through groove; 205. First annular groove; 206. Second annular groove; 207. Third annular groove; 208. Limiting boss; 3. Socket box; 301. Mating opening; 302. Blocking strip; 303. First mating bevel; 304. Second mating bevel; 305. Snap-fit ​​platform; 4. Longitudinal mounting platform; 5. Transverse mounting platform; 501. Notch; 6. Tension spring; 7. Moving rod; 701 702. First convex ring; 703. Second convex ring; 704. Convex ring groove; 705. Limiting block; 706. First compression spring; 9. Top column; 10. Second compression spring; 11. Fixing box; 12. Telescopic block; 13. Lifting block; 1307. Locking strip; 1308. Third compression spring; 14. Overload protector; 15. Top cap; 16. Dust plug; 17. Operating lever; 1709. Protrusion; 1700. Protrusion strip; 1700. Handle; 18. Decorative pressure ring; 19. Conductive spring; 20. Conductive contact; 21. Dormitory table. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0059] The embodiments of the present invention will now be described.

[0060] First embodiment:

[0061] Please refer to the following: A type of adjustable safety socket for dormitory use. Figure 1 - Figure 24 The system includes a mounting box 1, which is installed under the desk of the dormitory. Specifically, the top of the mounting box 1 has mounting holes for screws to pass through, and a flange with the same height as the thickness of the dormitory desk 21 is provided above the mounting surface. The mounting box 1 is installed at the corner of the dormitory desk 21, ensuring the overall aesthetics and stability of the safety socket on the dormitory desk 21.

[0062] Furthermore, a decorative pressure ring 18 is connected to the top of the mounting box 1. The decorative pressure ring 18 is glued to the top of the mounting box 1 and has beveled edges on all four sides to cover the gap between the mounting box 1 and the tabletop perforation of the dormitory table 21.

[0063] It also includes a lifting box 2, which is slidably connected to the mounting box 1. After extending upwards out of the desktop, it can be kept in the extended state by the limiting structure. After extending out of the desktop of the dormitory table 21 and being limited by the limiting structure, the lifting box 2 can maintain a relatively stable state, avoiding the force applied by students when plugging and unplugging electrical appliances, which may cause it to retract unexpectedly.

[0064] It also includes a power box 3, which is embedded in the mounting slot 201 of the lifting box 2 by a locking structure. Specifically, the power box 3 is provided with three two-hole power outlets and three five-hole power outlets, which is sufficient to meet the daily power needs of each student.

[0065] Furthermore, the lifting box 2 is equipped with an overload protector 14. After the reset button of the overload protector 14 pops out, it can release the locking structure from locking the plug box 3. After the locking structure is released, the plug box 3 can leave the mounting slot 201. After the plug box 3 leaves the mounting slot 201, the lifting box 2 returns to the mounting box 1. This achieves a dual response of physical isolation and electrical protection, effectively preventing students from resetting the operation without authorization, and achieving precise control of the power consumption of each bed in the dormitory at a lower cost.

[0066] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 - Figure 8 The inner wall of the mounting box 1 is connected to a fixed box 11. A telescopic block 12 is horizontally slidably connected inside the fixed box 11. An elastic component is provided on the telescopic block 12 facing the inner wall of the fixed box 11. In this embodiment, the elastic component inside the fixed box 11 is specifically a spring. When the telescopic block 12 is retracted into the fixed box 11 by an external force, the spring inside the fixed box 11 will be compressed and produce elastic deformation. When the external force pushing the telescopic block 12 is removed, the spring inside the fixed box 11 will push the telescopic block 12 to reset.

[0067] Furthermore, a moving rod 7 is provided inside the lifting box 2. The bottom end of the moving rod 7 extends downward from the lifting box 2 and is fixedly connected to a limiting block 704. A chamfer is provided between the limiting block 704 and the telescopic block 12 to cooperate with each other. A limiting boss 208 is fixedly connected to the outer wall of the lifting box 2 to limit the upward sliding of the lifting box 2. When the lifting box 2 is restricted from sliding upward by the limiting boss 208, the telescopic block 12 cooperates with the limiting block 704 to restrict the downward sliding of the lifting box 2. When the lifting box 2 extends out of the mounting box 1, the telescopic block 12 and the limiting boss 208 are used to limit the lifting box 2 to ensure that it is stable at a height above the table.

[0068] Specifically, during the upward movement of the lifting box 2 to extend out of the mounting box 1, the inclined surface of the limiting block 704 will contact the inclined surface of the telescopic block 12 and push the telescopic block 12 back into the fixed box 11. Until the limiting block 704 continues to move upward above the telescopic block 12, the telescopic block 12 will be restored to the extended state by the elastic force of the spring in the fixed box 11, which can cooperate with the limiting boss 208 to restrict the sliding of the lifting box 2.

[0069] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 - Figure 12Inside the lifting box 2, near the overload protector 14, there is a lifting block 13. The top of the reset button of the overload protector 14 is fixedly connected to a top cap 15. The lifting block 13 is provided with an inclined surface for contacting the top cap 15, and locking bars 1301 are fixedly connected to both sides. A third compression spring 1302 is provided between the bottom end of the lifting block 13 and the lifting box 2. The plug box 3 is provided with a mating port 301 facing the lifting block 13. The mating port 301 can accommodate the lifting block 13. The inner wall of the mating port 301 is provided with a blocking bar 302 facing the lifting block 13 for cooperating with the locking bar 1301. After the lifting block 13 is pushed upward by the reset button of the overload protector 14, the height of the locking bar 1301 increases, and it can disengage from the blocking bar 302, thereby releasing the lock on the plug box 3. By utilizing the cooperation between the locking bar 1301 and the blocking bar 302, the overload protector 14 pops out the plug box 3 after exceeding the predetermined power.

[0070] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 - Figure 14 The lifting box 2 has a waist-shaped hole 202 arranged vertically inside. The moving rod 7 is movably installed in the waist-shaped hole 202. Specifically, the top and bottom of the waist-shaped hole 202 are respectively provided with a second annular groove 206 and a third annular groove 207. The top and bottom of the moving rod 7 are respectively fixedly connected with a first convex ring 701 and a second convex ring 702. The second annular groove 206 is used to match the first convex ring 701, and the third annular groove 207 is used to match the second convex ring 702. The moving rod 7 can move horizontally or rotate around its own axis in the waist-shaped hole 202.

[0071] Furthermore, the lifting box 2 is slidably connected to a top post 9 for contacting the plug box 3 along the radial direction of the moving rod 7, and a first compression spring 8 is provided at the other end of the moving rod 7 corresponding to the position of the top post 9, which is in a compressed state. Specifically, the top post 9 contacts the moving rod 7 but is not fixedly connected to the moving rod 7 to avoid affecting the rotation of the moving rod 7 around its own axis. When the moving rod 7 is close to one end of the first compression spring 8 in the oblong hole 202, the limiting block 704 can contact the telescopic block 12. When the plug box 3 is close to the top post 9 in 202, the limiting block 704 and the telescopic block 12 cannot contact each other, and the plug box 3 can be pushed out of the mounting slot 201. When the plug box 3 is unlocked, the plug box 3 will be pushed away from the mounting slot 201 by the top post 9. During the process of the plug box 3 being installed into the mounting slot 201, the plug box 3 will push the top post 9. The top post 9 will push the moving rod 7 to move horizontally toward the first compression spring 8, so that when the plug box 3 is installed, the first compression spring 8 is in a compressed state.

[0072] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 - Figure 12The top and bottom surfaces of the power box 3 are provided with a first mating inclined surface 303 and a second mating inclined surface 304 that are mirror images of each other. The area of ​​the power supply equipment plug-in surface of the power box 3 is larger than the area of ​​the surface facing the top column 9, so that the cross-section of the power box 3 along the vertical plane is similar to an isosceles trapezoid. After the locking structure of the power box 3 is unlocked, it can effectively prevent the power box 3 from getting stuck in the mounting slot 201 and being unable to pop out smoothly. At the same time, during the descent of the lifting box 2, the first mating inclined surface 303 and the second mating inclined surface 304 of the power box 3 can slide smoothly and accurately with the desktop of the dormitory table 21 or the corresponding inclined surface of the mounting slot 201 under the vertical force that the lifting box 2 may generate during the descent. This ensures that the lifting box 2 is smoothly and accurately retracted into the mounting box 1, and avoids mechanical interference to the retraction of the lifting box 2 due to the power box 3 not being fully ejected.

[0073] Furthermore, a locking platform 305 is provided at the top of the first mating inclined surface 303. The lifting box 2 has a protrusion at the top of the mounting groove 201 for engaging with the locking platform 305. When the plug box 3 is inserted into the mounting groove 201, the protrusion of the mounting groove 201 engages with the locking platform 305, thereby limiting the top of the plug box 3 and preventing it from accidentally coming out during use. A second compression spring 10 is provided in the mounting groove 201 at the position corresponding to the first mating inclined surface 303. When the plug box 3 is placed in the mounting groove 201, the second compression spring 10 is in a compressed state. When the locking mechanism at the bottom of the plug box 3 is unlocked, the elastic force of the second compression spring 10 is released, applying a downward pushing force to the plug box 3, thereby allowing the plug box 3 to better detach from the mounting groove 201, ensuring that the plug box 3 can be ejected smoothly. At the same time, before the locking structure is unlocked, the plug box 3 is kept stably in the mounting groove 201.

[0074] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 - Figure 17 The lifting box 2 has two recessed conductive contacts 20 at the position facing the second mating inclined surface 304. The recessed conductive contacts 20 can effectively avoid the risk of short circuit due to accidental contact with foreign objects. The plug box 3 is provided with a Z-shaped conductive spring 19 at the position corresponding to the conductive contacts 20. When the plug box 3 is located in the mounting groove 201, the conductive spring 19 is in an elastic deformation state. The current is transmitted by the contact between the conductive spring 19 and the conductive contacts 20. As the conductive spring 19 is gradually compressed and deformed during the contact with the conductive contacts 20, the positive pressure generated by its elastic deformation continuously ensures the reliability of the contact. In addition, the conductive spring 19 is already in contact with the conductive contacts 20 before the plug box 3 is fully inserted into the mounting groove 201, and also before the reset button of the overload protector 14 is pressed. This can effectively avoid the generation of electric arc or instantaneous large current impact during the circuit connection process, and improve the power supply safety.

[0075] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 - Figure 24 The top of the lifting box 2 is provided with a vertically penetrating socket 203 that connects to the outside and the waist-shaped hole 202. The top of the socket 203 is normally plugged with a rubber dust plug 16 to prevent dust or table debris from entering the socket 203.

[0076] Specifically, when the moving rod 7 is located at one end of the waist-shaped hole 202 near the first compression spring 8, the insertion hole 203 is coaxial with the moving rod 7, and the operating rod 17 can be inserted into the insertion hole 203. Two protrusions 1701 are fixedly connected to the side wall of the operating rod 17 along the diameter. The two protrusions 1701 are set at a circumferential interval of 180 degrees. The insertion hole 203 is provided with a through groove 204 for the protrusions 1701 to slide in the vertical direction. The bottom end of the insertion hole 203 is provided with a first annular groove 205 with a diameter larger than the diameter of the insertion hole 203 itself. The protrusions 1701 can enter the first annular groove 205. By inserting the operating rod 17 into the insertion hole 203 and rotating it, the lifting box 2 can be lifted from the mounting box 1.

[0077] Second embodiment:

[0078] Please refer to the following: A type of adjustable safety socket for dormitory use. Figure 1 - Figure 24 Based on the first embodiment, the difference is that the bottom of the mounting box 1 is provided with a wire hole 101 for the wire to pass through, and a longitudinal mounting platform 4 is installed above the wire hole 101. Specifically, after the wire enters the mounting box 1 through the wire hole 101, it is connected to the bottom of the lifting box 2, and sufficient length is reserved for the lifting box 2 to be raised and lowered. The width of the longitudinal mounting platform 4 is greater than the diameter of the wire hole 101, which can prevent students from using long poles to directly lift the lifting box 2 from the wire hole 101. Therefore, in the event of a power outage, dormitory staff need to use the operating rod 17 on-site to perform the reset operation, ensuring electrical safety and management standardization.

[0079] Specifically, the mounting box 1 has a horizontal mounting platform 5 installed above the vertical mounting platform 4. When the lifting box 2 retracts into the mounting box 1, the top surface of the lifting box 2 is flush with the top of the mounting box 1, and the bottom is supported by the horizontal mounting platform 5. The horizontal mounting platform 5 is used to support the lifting box 2.

[0080] Furthermore, a tension spring 6 is provided between the top surface of the longitudinal mounting platform 4 and the bottom end of the lifting box 2, and a notch 501 is provided on the transverse mounting platform 5 for the tension spring 6 to pass through. The tension spring 6 helps the lifting box 2 to return to its initial position more quickly.

[0081] Third embodiment:

[0082] Please refer to the following: A type of adjustable safety socket for dormitory use. Figure 1 - Figure 24Based on the second embodiment, the difference from the second embodiment is that the top end of the moving rod 7 is fixedly connected to a first convex ring 701 with a diameter larger than the diameter of the moving rod 7 itself. The top surface of the first convex ring 701 is provided with a convex ring groove 703 along its own radial direction. The bottom end of the operating rod 17 is fixedly connected to a convex strip 1702 for cooperating with the convex ring groove 703, and the top end is fixedly connected to a handle 1703 for gripping. The stroke of the convex block 1701 in the first ring groove 205 in the vertical direction is greater than the depth of the convex ring groove 703. By rotating the moving rod 7 using the operating rod 17, the telescopic block 12 can also be disengaged from the limiting block 704, so that the lifting box 2 can be retracted into the mounting box 1 without the plug box 3 needing to pop out.

[0083] Specifically, when the power box 3 is not ejected, to retract the lifting box 2 into the mounting box 1, the dormitory manager uses the operating lever 17 to align the protrusion 1701 with the through groove 204, inserts the operating lever 17 into the socket 203, and applies no torque during insertion. The protrusion 1702 will then accurately insert into the protruding ring groove 703. At this time, turning the handle 1703 will drive the moving lever 7 to rotate, allowing the moving lever 7 to rotate 90 degrees around its own axis without slipping. This also disengages the limiting block 704 from the telescopic block 12, allowing the lifting box 2 to retract smoothly into the mounting box 1. After the lifting box 2 is completely retracted into the mounting box 1, gently lift the handle upwards. When the handle 1703 senses resistance, the top surface of the protrusion 1701 contacts the inner wall of the first annular groove 205. At this time, rotating the operating rod 17 will align the protrusion 1701 with the through groove 204, allowing the operating rod 17 to be pulled out smoothly. After inserting the dust plug 16, the lowering of the lifting box 2 is completed. When it is necessary to lift the lifting box 2, the operating rod 17 needs to be inserted into the socket 203, and downward pressure is applied to the handle 1703. The operating rod 17 is slowly rotated so that the protrusion 1702 is inserted into the protruding ring groove 703. Rotating 90 degrees will reset the limiting block 704 at the bottom of the moving rod 7. Then, the lifting box 2 is reset and lifted in the same way as when the plug box 3 is ejected. The difference is that the plug box 3 does not need to be installed during the lifting process.

[0084] In practical operation, the present invention works as follows: When the plug of the electrical device is plugged into the power box 3, if the power of the electrical device exceeds the threshold, the overload protector 14 cuts off the power, and at the same time, the reset button at its top pops up. The cap 15 at the top of the reset button pushes the inclined surface of the lifting block 13, causing the lifting block 13 to move upward. The locking strips 1301 on both sides of the lifting block 13 disengage from the blocking strips 302. The second compression spring 10, which contacts the first mating inclined surface 303, and the conductive spring 19, which is in an elastic deformation state, can push the power box 3 to gradually leave the mounting slot 201. As the plug box 3 gradually leaves the mounting slot 201, the elastic potential energy of the first compression spring 8 is released, pushing the moving rod 7 to move horizontally toward the mounting slot 201. During this process, the top column 9 can also push the plug box 3 out of the mounting slot 201. When the moving rod 7 moves to one end near the mounting slot 201 in the waist-shaped hole 202, the limiting block 704 at the bottom of the moving rod 7 disengages from the telescopic block 12. The lifting box 2, under its own weight and the elastic force of the tension spring 6, quickly retracts into the mounting box 1 to prevent students from resetting the overload protector 14 without authorization.

[0085] During the reset process of the electrical box 3, the dormitory staff first removes the dust plug 16, aligns the protrusion 1701 of the operating lever 17 with the through groove 204, and inserts it downwards. During insertion, a certain torque is maintained. The moment the protrusion 1701 enters the first ring groove 205, the operating lever 17 rotates. At this point, the protrusion 1701 is not aligned with the through groove 204, and the protrusion 1702 has not entered the protruding ring groove 703. After gripping the handle 1703, the lifting box 2 can be lifted upwards. When the lifting box 2 is lifted until the limiting protrusion 208 contacts the mounting box 1, the previously ejected electrical box 3 is then installed back into the mounting groove 201. During the reset process of the electrical box 3... The blocking bar 302 will push the locking bar 1301 to lower the lifting block 13, thereby pressing the reset button of the overload protector 14. When the plug box 3 is fully inserted into the mounting slot 201, the conductive spring 19 undergoes elastic deformation and contacts the conductive contact 20. The top column 9 pushes the moving rod 7 to complete the reset, while the lifting block 13 is reset by the elastic force of the third compression spring 1302, realizing the restriction of the locking bar 1301 on the blocking bar 302, thereby completing the locking of the plug box 3. After the moving rod 7 is reset, the limiting block 704 located at the bottom of the moving rod 7 can cooperate with the telescopic block 12 to restrict the lowering of the lifting box 2 and complete the reset of the safety socket.

[0086] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A retractable safety socket for dormitory use, characterized in that, include: Installation box, which is installed under the desktop in the dormitory; The lifting box is slidably connected to the mounting box and remains extended after extending upwards out of the desktop due to the constraint structure. A power outlet box is embedded in the mounting slot of a lifting box via a locking structure. An overload protector is installed inside the lifting box. When the reset button of the overload protector is released, the locking structure on the power outlet box is released, allowing the power outlet box to leave the mounting slot. The lifting box then descends back into the mounting box. A fixed box is connected to the inner wall of the mounting box. A telescopic block is horizontally slidably connected inside the fixed box. An elastic component is provided on the telescopic block facing the inner wall of the fixed box. A moving rod is installed inside the lifting box. The bottom end of the moving rod extends out of the lifting box and is fixedly connected to a limit block. A chamfer is provided between the limit block and the telescopic block to cooperate with each other. A device for... is fixedly connected to the outer wall of the lifting box. A limiting boss restricts the upward sliding of the lifting box. When the lifting box is restricted from sliding upward by the limiting boss, the telescopic block simultaneously cooperates with the limiting block to restrict the downward sliding of the lifting box. A lifting block is provided inside the lifting box near the overload protector. A top cap is fixedly connected to the top of the reset button of the overload protector. The lifting block is provided with an inclined surface for contacting the top cap, and locking strips are fixedly connected to both sides. A third compression spring is provided between the bottom end of the lifting block and the lifting box. The plug box is provided with a mating port facing the lifting block. A blocking strip is provided on the inner wall of the mating port facing the lifting block for cooperating with the locking strip. After the lifting block is pushed upward by the reset button of the overload protector, the locking strip will disengage from the blocking strip.

2. The dormitory-use adjustable safety socket according to claim 1, characterized in that: The lifting box has a waist-shaped hole arranged vertically inside. The moving rod is movably installed in the waist-shaped hole. The lifting box is slidably connected to a top post for contacting the plug box along the radial direction of the moving rod. A first compression spring in a compressed state is provided at the other end of the moving rod corresponding to the position of the top post. When the moving rod is close to one end of the first compression spring in the waist-shaped hole, the limiting block will contact the telescopic block. When the moving rod is close to one end of the top post in the waist-shaped hole, the limiting block and the telescopic block cannot contact each other, and the plug box will be pushed out of the mounting slot.

3. The dormitory-use adjustable safety socket according to claim 1, characterized in that: The bottom of the mounting box is provided with a wire-passing hole for wires to pass through, and a longitudinal mounting platform is installed above the wire-passing hole. A transverse mounting platform is installed above the longitudinal mounting platform. When the lifting box is retracted, the top surface of the lifting box is flush with the top of the mounting box, and the bottom is supported by the transverse mounting platform.

4. The dormitory-use adjustable safety socket according to claim 3, characterized in that: A tension spring is provided between the top surface of the longitudinal mounting platform and the bottom end of the lifting box. A notch is provided on the transverse mounting platform for the tension spring to pass through. A decorative pressure ring is connected to the top of the mounting box.

5. The dormitory-use adjustable safety socket according to claim 2, characterized in that: The top of the lifting box has a vertically extending insertion hole that runs from the top surface of the lifting box to the top of the waist-shaped hole. The insertion hole is used for inserting an operating rod. Two protrusions are fixedly connected to the side wall of the operating rod along the diameter. The two protrusions are arranged circumferentially at 180-degree intervals. The insertion hole has a through groove for the protrusions to slide along the vertical direction. The bottom of the insertion hole has a first annular groove with a diameter larger than the diameter of the insertion hole itself. The first annular groove is used to accommodate the protrusions.

6. The dormitory-use adjustable safety socket according to claim 5, characterized in that: The top end of the moving rod is fixedly connected to a first convex ring with a diameter larger than that of the moving rod itself. The top surface of the first convex ring is provided with a convex ring groove along its own radial direction. The bottom end of the operating rod is fixedly connected to a convex strip for cooperating with the convex ring groove, and the top end is fixedly connected to a handle for gripping. The stroke of the convex block in the first ring groove along the vertical direction is greater than the depth of the convex ring groove.

7. The dormitory-use adjustable safety socket according to claim 2, characterized in that: The top and bottom surfaces of the power box are provided with a first mating inclined surface and a second mating inclined surface that are mirror images of each other. The top of the first mating inclined surface is provided with a snap-fit ​​platform. The lifting box is provided with a protrusion at the top of the mounting groove for snap-fitting with the snap-fit ​​platform. The area of ​​the power supply device plug-in surface of the power box is larger than the area facing the top column surface.

8. The dormitory-use adjustable safety socket according to claim 7, characterized in that: The lifting box has two recessed conductive contacts facing the second mating inclined surface. The plug box has a conductive spring at the position corresponding to the conductive contacts. When the plug box is located in the mounting groove, the conductive spring is in an elastic deformation state.

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