A safety plug and socket with self-locking

Abstract

The invention discloses a safety socket with a self-locking safety plug, comprising: a two-pin plug, a three-pin plug, a two-pin socket and a three-pin socket. The two-pin plug comprises two two-pin plug middle plug outer bodies, the two two-pin plug middle plug outer bodies are movably connected, the inner movably connected two-pin plug middle plug outer bodies are provided with a two-pin plug self-locking column, the outer side of the two-pin plug self-locking column slide groove is fixedly provided with a two-pin plug reinforcing rib, so that the two-pin plug self-locking column reduces the pulling force with the two-pin socket self-locking hole and the two-pin plug middle plug outer body, the two-pin plug rotating tube is rotated counterclockwise, the two-pin plug electrode is pulled out of the safety socket and retracted into the plug inner cavity, and then the two-pin plug self-locking column is continuously rotated counterclockwise to unlock the safety plug and separate the safety plug from the safety socket, the plug and the socket are not easy to loosen under the interference of external force, poor contact will not occur, and the major safety hazards of heating and exposed electrodes with electricity are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electrical appliance connection, in particular to a safety plug and safety socket with self-locking function. Background Art

[0002] Plugs and sockets play an important role in connecting electrical power, but there are still great problems in terms of safety, such as easy falling off. Plugs and sockets are easy to loosen under external interference, resulting in poor contact, heating of the appliance, and major safety hazards of exposed electrodes. When inserting and unplugging the plug, improper use will also cause safety problems. For this reason, a safety plug and socket with self-locking is proposed. Summary of the invention

[0003] The object of the present invention is to provide a safety plug and safety socket with self-locking function to solve the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a safety socket with a self-locking safety plug, comprising: a two-pin plug, a three-pin plug, a two-pin socket and a three-pin socket, the two-pin plug comprising two two-pin plug middle plug outer bodies, the two two-pin plug middle plug outer bodies are movably connected, the inner movably connected with a two-pin plug self-locking column, the inner part of the two-pin plug middle plug outer body is provided with a two-pin plug self-locking column slide groove, the inner part of the two-pin plug self-locking column slide groove is movably connected with a two-pin plug self-locking column fastening screw, the outer part of the two-pin plug self-locking column slide groove is fixedly installed with a two-pin plug reinforcing rib, the outer part of the two-pin plug self-locking column is respectively fixedly installed with two two-pin plug self-locking column extending limit plates and two-pin plug self-locking column retracting limit plates, the outer part of the two-pin plug self-locking column retracting into the limit plate is fixedly installed A two-pin plug self-locking column is provided, two two-pin plug electrode holes are provided on the outside of the plug outer body of the two-pin plug, a two-pin plug fastening hole is provided on the outside of the plug outer body of the two-pin plug, a two-pin plug rotating tube is movably connected to the plug outer body of the two-pin plug, a two-pin plug power supply is arranged inside the two-pin plug rotating tube, a two-pin plug multi-head large lead thread used in conjunction with each other is provided on the outside of the two-pin plug power supply, a two-pin plug power supply electrode notch is provided on the outside of the two-pin plug power supply, a two-pin socket is plugged into the outside of the two-pin plug electrode, a two-pin plug positioning hole is provided on the outside of the plug outer body of the two-pin plug, and two two-pin plug outer body limiting grooves are provided inside the plug outer body of the two-pin plug;

[0005] The three-pin plug comprises two three-pin plug middle plug outer bodies, the two three-pin plug middle plug outer bodies are movably connected, the inner movably connected with a three-pin plug self-locking column, the inner part of the three-pin plug middle plug outer body is provided with a three-pin plug self-locking column slide groove, the inner movably connected with a three-pin plug self-locking column fastening screw, the outer part of the three-pin plug self-locking column is fixedly installed with two three-pin plug self-locking column extension limit plates and three-pin plug self-locking column retraction limit plates, the outer part of the three-pin plug self-locking column retracted into the limit plate is fixedly installed with a three-pin plug self-locking column, the outer part of the three-pin plug self-locking column slide groove is fixedly installed with a three-pin plug reinforcement rib, the outer part of the three-pin plug middle plug outer body is provided with a plurality of three-pin plug electrode holes, and the three-pin plug middle plug outer body is provided with a plurality of three-pin plug electrode holes, A plurality of three-pin plug positioning holes are provided on the outside of the body, a three-pin plug rotating tube is movably connected to the inside of the three-pin plug middle plug outer body, a three-pin plug power supply is arranged inside the three-pin plug rotating tube, three three-pin plug electrodes are fixedly installed on the outside of the three-pin plug power supply, three-pin plug multi-head large lead threads that cooperate with each other are provided on the outside of the three-pin plug power supply and the inside of the three-pin plug rotating tube, a three-pin plug power supply electrode notch is provided on the outside of the three-pin plug power supply, a three-pin socket is plugged into the outside of the three-pin plug electrode, a plurality of three-pin plug fastening holes are provided on the outside of the three-pin plug middle plug outer body, a three-pin plug rotating tube limiting ring is fixedly installed on the outside of the three-pin plug rotating tube, and two three-pin plug outer body limiting grooves are provided in the three-pin plug middle plug outer body.

[0006] Preferably, the two-pin socket includes a two-pin socket shell, a two-pin socket self-locking hole is provided on the outside of the two-pin socket shell, two two-pin socket electrode jacks are provided on the outside of the two-pin socket shell, a two-pin socket rotation limit ring is fixedly installed inside the two-pin socket shell, a two-pin plug self-locking column limit groove is provided inside the two-pin socket rotation limit ring, two-pin socket limit ring middle inclined surfaces are provided on both sides of the two-pin socket rotation limit ring, a two-pin socket child protection door is installed inside the two-pin socket shell through a spring, and a two-pin socket child protection door return stop point is provided inside the two-pin socket shell.

[0007] Preferably, the three-pin socket comprises a three-pin socket shell, a three-pin socket electrode jack is provided on the outside of the three-pin socket shell, a three-pin socket self-locking hole is provided on the outside of the three-pin socket shell, a three-pin socket rotation limit ring is fixedly installed on the inside of the three-pin socket shell, a three-pin plug self-locking column limit groove is provided on the inside of the three-pin socket rotation limit ring, a three-pin socket child protection door is installed on the inside of the three-pin socket shell through a spring, a three-pin socket child protection door inner limit edge is provided on the inside of the three-pin socket rotation limit ring, a three-pin socket child protection door outer limit edge is provided on the inside of the three-pin socket shell, and a three-pin socket protection door return stop point is integrally formed on the inside of the three-pin socket shell.

[0008] Preferably, the inner wall groove width of the notch of the two-pin plug power electrode is larger than the outer wall diameter of the two-pin plug reinforcement rib.

[0009] Preferably, the inner wall groove width of the notch of the power electrode of the three-pin plug is larger than the outer wall diameter of the reinforcement rib of the three-pin plug.

[0010] Preferably, a two-pin plug rotation slot is provided on the outside of the two-pin plug rotation tube, and the outer body of the plug in the two-pin plug is snap-connected to the outside of the two-pin plug rotation slot.

[0011] Preferably, a three-pin plug rotation slot is provided on the outside of the three-pin plug rotation tube, and the outer body of the plug in the three-pin plug is snap-connected to the outside of the three-pin plug rotation slot.

[0012] Preferably, the three-pin plug self-locking column is slidably connected to the inside of the plug outer body in the three-pin plug.

[0013] Preferably, the two-pin plug self-locking column is slidably connected to the inside of the plug outer body in the two-pin plug.

[0014] Preferably, the two-pin plug self-locking column fastening screw is threadedly connected to the outside of the two-pin plug self-locking column, and the three-pin plug self-locking column fastening screw is threadedly connected to the outside of the three-pin plug self-locking column.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the present invention, after the two-pin plug self-locking column of the safety plug is pulled out to the two-pin plug self-locking column limiting groove, it is fixed by the two-pin plug self-locking column fastening screw, and the movable two-pin plug power source is rotated counterclockwise through the two-pin plug rotating tube to make the two-pin plug electrode enter the inner cavity of the safety plug, and the two-pin plug self-locking column of the safety plug is aligned with the two-pin socket self-locking hole of the two-pin socket shell, and the two-pin plug is rotated to make the two-pin plug self-locking column to the two-pin plug self-locking column limiting groove, and then the two-pin plug rotating tube is continuously rotated clockwise, and at the same time, the two-pin plug electrode pushes the two-pin socket child protection door open and inserts it into the two-pin socket shell. At this time, the safety plug only needs to be rotated. When the full plug and the safety socket are in the self-locking state, a certain thrust should be applied to the safety plug during the rotation process so that the two-pin plug self-locking column reduces the pulling force with the two-pin socket self-locking hole and the outer body of the plug in the two-pin plug. When separation is required, the two-pin plug rotating tube is rotated counterclockwise to pull the two-pin plug electrode out of the safety socket and retract it into the inner cavity of the plug. Then, it is continuously rotated counterclockwise to unlock the two-pin plug self-locking column and separate the safety plug from the safety socket. The two-pin plug and the three-pin plug are used in the same way. Under the interference of external force, the plug and the socket are not easy to loosen, and poor contact will not occur, thereby reducing the major safety hazards of heating and exposed electrodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a two-pin safety plug in a safety socket with a self-locking safety plug of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the two-pin plug power supply in the safety socket with self-locking safety plug of the present invention when it is retracted;

[0019] Figure 3 It is a schematic diagram of the explosion structure of the plug outer body in the two-pin plug in the safety socket with self-locking safety plug of the present invention;

[0020] Figure 4 It is a side view structural diagram of the outer body of the two-pin plug in the safety socket with self-locking safety plug of the present invention;

[0021] Figure 5 It is a structural schematic diagram of another perspective of the plug outer body of the two-pin plug in the safety socket with self-locking safety plug of the present invention;

[0022] Figure 6 It is a structural schematic diagram of a two-pin plug self-locking column extending out of a limit plate in a safety socket with a self-locking safety plug of the present invention;

[0023] Figure 7 It is a structural schematic diagram of a two-pin plug power supply in a safety socket with a self-locking safety plug of the present invention;

[0024] Figure 8It is a partial cross-sectional structural schematic diagram of a two-pin plug rotating tube in a safety socket with a self-locking safety plug of the present invention;

[0025] Fig. 9 It is a structural schematic diagram of a two-pin socket rotation limit ring in a safety socket with a self-locking safety plug according to the present invention from one viewing angle;

[0026] Fig.10 It is a structural schematic diagram of the electrode hole position of the two-pin plug in the safety socket with self-locking safety plug of the present invention;

[0027] Fig.11 It is a structural schematic diagram of a two-pin socket housing in a safety socket with a self-locking safety plug of the present invention;

[0028] Fig.12 It is a structural schematic diagram of the two-pin plug of the safety plug and safety socket with self-locking of the present invention in operation;

[0029] Fig.13 It is a structural schematic diagram of the two-pin socket protection door of the safety socket with self-locking safety plug of the present invention in the open state;

[0030] Fig.14 It is a cross-sectional structural schematic diagram of a two-pin plug self-locking column in a safety plug safety socket with a self-locking safety plug of the present invention;

[0031] Fig.15 It is a structural schematic diagram of a two-pin socket child protection door in a safety socket with a self-locking safety plug of the present invention;

[0032] Fig.16 It is a three-dimensional structural schematic diagram of a child protection door of a two-pin socket in a safety socket with a self-locking safety plug according to the present invention;

[0033] Fig.17 It is a structural schematic diagram of the self-locking hole of the three-pin socket in the safety socket with self-locking safety plug of the present invention;

[0034] Fig.18 It is a structural schematic diagram of a rotation limit ring in a safety plug safety socket with self-locking according to the present invention;

[0035] Fig.19 It is a schematic cross-sectional view of the structure of a three-pin safety plug in a safety socket with a self-locking safety plug of the present invention;

[0036] Fig. 20 It is a structural schematic diagram of the three-pin safety plug power supply in the safety socket with self-locking safety plug of the present invention when it is retracted;

[0037] Fig.21 This is one of the structural schematic diagrams of the plug outer body in the three-pin plug in the safety socket with self-locking safety plug of the present invention;

[0038] Fig. 22 The second structural schematic diagram of the plug outer body in the three-pin plug in the safety socket with self-locking safety plug of the present invention;

[0039] Fig.23 It is a structural schematic diagram of the self-locking column of the three-pin plug in the safety socket with self-locking safety plug of the present invention;

[0040] Fig.24 It is a structural schematic diagram of a three-pin plug power supply in a safety socket with a self-locking safety plug of the present invention;

[0041] Fig.25 It is a structural schematic diagram of a partial cross-section of a three-pin plug rotating tube in a safety socket with a self-locking safety plug of the present invention;

[0042] Fig.26 It is a structural schematic diagram of a three-pin socket housing in a safety socket with a self-locking safety plug of the present invention;

[0043] Fig. 27 It is a structural schematic diagram of the self-locking column fastening screw of the three-pin plug in the self-locking safety plug safety socket of the present invention;

[0044] Fig.28 It is a structural schematic diagram of the three-pin plug in the safety socket with self-locking safety plug of the present invention when it is working;

[0045] Fig.29 The present invention is a schematic structural diagram of the return stop point of the three-pin socket safety door in the safety socket with self-locking safety plug.

[0046] In the figure: 1. Self-locking column of two-pin plug; 2. Fastening screw of self-locking column of two-pin plug; 3. Sliding groove of self-locking column of two-pin plug; 4. Reinforcing rib of two-pin plug; 5. Electrode hole of two-pin plug; 6. Fastening hole of two-pin plug; 7. Rotating slot of two-pin plug; 8. Self-locking column of two-pin plug extends out of the limit plate; 9. Self-locking column of two-pin plug retracts into the limit plate; 10. Electrode of two-pin plug; 11. Limiting groove of self-locking column of two-pin plug; 12. Multi-head large lead thread of two-pin plug; 13. Positioning hole of two-pin plug; 14. Power supply electrode gap; 15. Two-pin plug middle plug outer body; 16. Two-pin plug power supply; 17. Two-pin plug rotating tube; 18. Two-pin socket self-locking hole; 19. Two-pin socket rotation limit ring; 20. Two-pin socket child protection door; 21. Two-pin socket limit ring middle inclined surface; 22. Two-pin socket child protection door return stop point; 23. Two-pin socket electrode jack; 24. Three-pin plug self-locking column; 25. Three-pin plug self-locking column fastening screw; 26. Three-pin plug self-locking column slide groove; 27. Three-pin plug reinforcement rib; 28 , three-pin plug electrode hole; 29, three-pin plug fastening hole; 30, three-pin plug rotation slot; 31, three-pin plug self-locking column extends out of the limit plate; 32, three-pin plug self-locking column retracts into the limit plate; 33, three-pin plug rotation tube limit ring; 34, three-pin plug electrode; 35, three-pin plug self-locking column limit slot; 36, three-pin plug multi-head large lead thread; 37, three-pin plug positioning hole; 38, three-pin plug power supply electrode gap; 39, three-pin plug middle plug outer body; 40, three-pin plug power supply; 41 , three-pin plug rotating tube; 42, three-pin socket self-locking hole; 43, three-pin socket rotation limit ring; 44, three-pin socket child protection door; 45, three-pin socket child protection door outer limit edge; 46, three-pin socket child protection door inner limit edge; 47, three-pin socket child protection door return stop point; 48, three-pin socket electrode jack; 49, two-pin plug self-locking column; 50, three-pin plug self-locking column; 51, two-pin socket shell; 52, three-pin socket shell; 53, two-pin plug outer body limit groove; 54, three-pin plug outer body limit groove. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] See also Figure 1-Figure 29 , the present invention provides a technical solution:

[0049] Example 1

[0050] A self-locking safety two-pin plug comprises: two two-pin plug middle plug outer bodies 15, the two two-pin plug middle plug outer bodies 15 are movably connected, the two-pin plug middle plug outer bodies 15 are movably connected with a two-pin plug self-locking column 1 inside, the two-pin plug middle plug outer body 15 is provided with a two-pin plug self-locking column slide groove 3 inside, the two-pin plug self-locking column slide groove 3 is movably connected with a two-pin plug self-locking column fastening screw 2, the two-pin plug self-locking column slide groove 3 is fixedly installed with a two-pin plug reinforcing rib 4 outside, two two-pin plug self-locking column extension limit plates 8 and two-pin plug self-locking column retracting limit plates 9 are respectively fixedly installed outside the two-pin plug self-locking column 1, and the two-pin plug self-locking column retracting limit plate 9 is fixedly installed outside the two-pin plug self-locking column 49, and the two-pin plug middle plug outer body 15 is provided with two two-pin plug self-locking column slide grooves 3 inside. The two-pin plug electrode hole 5 is provided on the outside of the two-pin plug outer body 15, and a two-pin plug fastening hole 6 is provided on the outside of the two-pin plug outer body 15. The two-pin plug outer body 15 is movably connected with a two-pin plug rotating tube 17, and a two-pin plug power supply 16 is arranged inside the two-pin plug rotating tube 17. The outside of the two-pin plug power supply 16 and the inside of the two-pin plug rotating tube 17 are provided with a two-pin plug multi-head large lead thread 12 that cooperate with each other, and two two-pin plug electrodes 10 are fixedly installed on the outside of the two-pin plug power supply 16, and a two-pin plug power supply electrode notch 14 is provided on the outside of the two-pin plug power supply 16. The two-pin socket is plugged into the outside of the two-pin plug electrode 10, and a two-pin plug positioning hole 13 is provided on the outside of the two-pin plug outer body 15, and two two-pin plug outer body limiting grooves 53 are provided inside the two-pin plug outer body 15.

[0051] By adopting the above technical solution: the two-pin plug self-locking column 1 can be telescopically operated, and is fixed by the two-pin plug self-locking column fastening screw 2, and the two-pin plug self-locking column 49 is matched with the two-pin socket self-locking hole 18 to achieve fixation and self-locking, so that it will not loosen or fall off. The front of the two-pin plug self-locking column 49 has an inclination to facilitate the matching with the two-pin socket self-locking hole 18. The plug outer body 15 in the two-pin plug is composed of two pieces and has a telescopic two-pin plug self-locking column 1. The two-pin plug power supply 16 acts as the live wire and the neutral wire, and is composed of a two-pin plug multi-head large lead thread 12 and a two-pin plug The rotating tube 17 cooperates with each other and rotates through the two-pin plug multi-head large lead thread 12, so that the two-pin plug electrode 10 can quickly meet the entry and exit requirements. The front two-pin plug power supply electrode notch 14 corresponds to the two-pin plug reinforcement rib 4 in the two-pin plug outer body 15 so that there is room for movement. The two-pin plug rotating tube 17 has a multi-head two-pin plug multi-head large lead thread 12 combined with the two-pin plug power supply 16, so that it can run quickly and easily, and a two-pin plug rotating slot 7 is combined with the two-pin plug outer body 15 to make it rotate quickly, forming a quick match, which is convenient and quick to use.

[0052] Example 2

[0053] A self-locking safety three-pin plug comprises: two three-pin plug middle plug outer bodies 39, the two three-pin plug middle plug outer bodies 39 are movably connected, the inner part of the three-pin plug middle plug outer body 39 is movably connected with a three-pin plug self-locking column 24, the inner part of the three-pin plug middle plug outer body 39 is provided with a three-pin plug self-locking column slide groove 26, the inner part of the three-pin plug self-locking column slide groove 26 is movably connected with a three-pin plug self-locking column fastening screw 25, the outer part of the three-pin plug self-locking column 24 is fixedly installed with two three-pin plug self-locking column extension limit plates 31 and three-pin plug self-locking column retracting limit plates 32, the outer part of the three-pin plug self-locking column retracting limit plate 32 is fixedly installed with a three-pin plug self-locking column 50, the outer part of the three-pin plug self-locking column slide groove 26 is fixedly installed with a three-pin plug reinforcing rib 27, the three-pin plug reinforcing rib 27 is directly opposite to the three-pin plug self-locking column slide groove 26, and the outer part of the three-pin plug middle plug outer body 39 is provided with a plurality of three-pin plug electric The three-pin plug has a plurality of three-pin plug locating holes 37 on the outside of the plug outer body 39, a three-pin plug rotating tube 41 is movably connected to the inside of the plug outer body 39, a three-pin plug power supply 40 is arranged inside the three-pin plug rotating tube 41, three three-pin plug electrodes 34 are fixedly installed on the outside of the three-pin plug power supply 40, three-pin plug multi-head large lead threads 36 that cooperate with each other are arranged on the outside of the three-pin plug power supply 40 and the inside of the three-pin plug rotating tube 41, a three-pin plug power supply electrode notch 38 is arranged on the outside of the three-pin plug power supply 40, a three-pin socket is plugged into the outside of the three-pin plug electrode 34, a plurality of three-pin plug fastening holes 29 are arranged on the outside of the plug outer body 39 of the three-pin plug, a three-pin plug rotating tube limiting ring 33 is fixedly installed on the outside of the three-pin plug rotating tube 41, and two three-pin plug outer body limiting grooves 54 are arranged in the plug outer body 39 of the three-pin plug.

[0054] By adopting the above technical solution: in the three-pin plug, the three-pin plug self-locking column 24 in the plug outer body 39 of the three-pin plug can be freely extended and retracted, and is fixed by the three-pin plug self-locking column fastening screw 25. The specific function is that the three-pin plug self-locking column 50 is used in conjunction with the three-pin socket self-locking hole 42 to complete the fixation, and the self-locking prevents it from loosening and falling off. The front of the three-pin plug self-locking column 50 has an inclination to facilitate the cooperation with the three-pin socket self-locking hole 42. The three-pin plug multi-head large lead thread 36 and the three-pin plug rotating tube 41 In coordination, by using the three-pin plug multi-start large lead thread 36 to rotate, the three-pin plug electrode 34 can quickly reach the entry and exit requirements. The three-pin plug power electrode notch 38 corresponds to the three-pin plug reinforcement rib 27 in the three-pin plug outer body 39 so that there is room for movement. The three-pin plug rotating tube limit ring 33 is used to allow the three-pin plug electrode 34 of the movable power supply to enter the three-pin plug electrode hole 28 in the three-pin plug outer body 39 during assembly and then fix the three-pin plug rotating tube limit ring 33.

[0055] Example 3

[0056] A self-locking safety two-pin socket comprises: a two-pin socket shell 51, a two-pin socket self-locking hole 18 is provided on the outside of the two-pin socket shell 51, two two-pin socket electrode sockets 23 are provided on the outside of the two-pin socket shell 51, a two-pin socket rotation limit ring 19 is fixedly installed inside the two-pin socket shell 51, a two-pin plug self-locking column limit groove 11 is provided inside the two-pin socket rotation limit ring 19, two-pin socket limit ring middle inclined surfaces 21 are provided on both sides of the two-pin socket rotation limit ring 19, a two-pin socket child protection door 20 is installed inside the two-pin socket shell 51 through a spring, and a two-pin socket child protection door return stop point 22 is provided inside the two-pin socket shell 51.

[0057] By adopting the above technical solution: in the two-pin socket, the two-pin socket self-locking hole 18 is matched with the two-pin plug self-locking column 49. After the two-pin plug self-locking column 49 is inserted into the two-pin socket self-locking hole 18, it is rotated in the two-pin socket rotation limit ring 19 to the two-pin plug self-locking column limit groove 11. The front of the two-pin socket self-locking hole 18 has an inclination to facilitate the cooperation with the two-pin plug self-locking column 49. The two-pin socket rotation limit ring 19 is arranged under the two-pin socket self-locking hole 18 as a convex structure, which is mainly fixed to the two-pin plug self-locking column 49 rotating inside, and runs to the two-pin plug self-locking column limit groove 11, on both sides There is an inclined surface 21 in the limit circle of the two-pin socket, which cooperates with the opening inclined surface in the child protection door 20 of the two-pin socket to make it stable. There should be a certain gap between its three sides and the child protection door 20 of the two-pin socket, so that the child protection door 20 of the two-pin socket can prevent opening during abnormal operation. The child protection door 20 of the two-pin socket is obtained by removing a square block from the normal protection door to install the rotation limit circle 19 of the two-pin socket. Its opening inclination should be the same as the inclination of the inclined surface 21 in the limit circle of the two-pin socket, and its three sides should have a margin with the rotation limit circle 19 of the two-pin socket. Its pressure spring is moved up or set on both sides according to actual conditions.

[0058] Example 4

[0059] A self-locking safety three-pin socket comprises: the three-pin socket comprises a three-pin socket shell 52, a three-pin socket electrode jack 48 is provided on the outside of the three-pin socket shell 52, a three-pin socket self-locking hole 42 is provided on the outside of the three-pin socket shell 52, a three-pin socket rotation limit ring 43 is fixedly installed inside the three-pin socket shell 52, a three-pin plug self-locking column limit groove 35 is provided inside the three-pin socket rotation limit ring 43, a three-pin socket child protection door 44 is installed inside the three-pin socket shell 52 through a spring, a three-pin socket child protection door inner limit edge 46 is provided inside the three-pin socket rotation limit ring 43, a three-pin socket child protection door outer limit edge 45 is provided inside the three-pin socket shell 52, and a three-pin socket protection door return stop point 47 is integrally formed inside the three-pin socket shell 52.

[0060] By adopting the above technical scheme: in the triangular socket, the three-pin socket self-locking hole 42 is matched with the three-pin plug self-locking column 50. After the three-pin plug self-locking column 50 is inserted into the three-pin socket self-locking hole 42, it is rotated in the three-pin socket rotation limit ring 43 to the three-pin plug self-locking column limit groove 35. The front of the three-pin socket self-locking hole 42 has an inclination to facilitate the cooperation with the three-pin plug self-locking column 50. The three-pin socket rotation limit ring 43 is arranged below the three-pin socket self-locking hole 42 as a convex structure with the same height as the convex material of the live wire and the neutral wire electrode jack, so that the plane of the child protection door 44 of the three-pin socket slides here, and its function is to make the three-pin plug self-locking column 50 rotate therein to the three-pin plug self-locking column limit groove 35, and the three-pin socket child protection door 44, as long as the pressure spring is moved up or set on both sides according to the actual situation.

[0061] Specifically, a two-pin plug rotation slot 7 is provided on the outside of the two-pin plug rotation tube 17 , and the plug outer body 15 of the two-pin plug is snap-connected to the outside of the two-pin plug rotation slot 7 .

[0062] Specifically, a three-pin plug rotation slot 30 is provided on the outside of the three-pin plug rotation tube 41 , and a plug outer body 39 of the three-pin plug is snap-connected to the outside of the three-pin plug rotation slot 30 .

[0063] According to the above technical scheme, the working steps of this scheme are summarized and sorted out: during use, when it is necessary to turn on the power, the two-pin plug self-locking column 1 of the safety plug is pulled out to the two-pin plug self-locking column limit groove 11, and then fixed by the two-pin plug self-locking column fastening screw 2, and the movable two-pin plug power supply 16 is rotated counterclockwise through the two-pin plug rotating tube 17, so that the two-pin plug electrode 10 is retracted into the inner cavity of the safety plug. Align the two-pin plug self-locking column 49 of the safety plug with the two-pin socket self-locking hole 18 of the two-pin socket shell 51, rotate it to the two-pin plug self-locking column limiting groove 11, and then continuously rotate the two-pin plug rotating tube 17 clockwise. When the two-pin plug electrode 10 pushes open the two-pin socket child protection door 20 and inserts it into the two-pin socket shell 51, it only needs to be rotated. At this time, the safety plug and the safety socket are in a self-locking state. During the rotation process, a certain thrust should be applied to the safety plug to reduce the pulling force between the two-pin plug self-locking column 49 and the two-pin socket self-locking hole 18 and the plug outer body 15 in the two-pin plug. When separation is required, the two-pin plug rotating tube 17 is rotated counterclockwise to pull the two-pin plug electrode 10 out of the safety socket and retract it into the inner cavity of the plug, and then continuously rotate counterclockwise to unlock the two-pin plug self-locking column 49, so that the safety plug is separated from the safety socket. When the safety plug is in use, there is no exposed two-pin plug electrode 10 with electricity, and the safety of electricity is guaranteed from the structure. After the two-pin plug self-locking column 1 is retracted to the two-pin plug self-locking column retracted into the limit plate 9, it can be matched with the ordinary socket after being fixed by the two-pin plug self-locking column fastening screw 2. After the two-pin plug electrode 10 is exposed from the plug outer body 15 in the two-pin plug, it is aligned with the two-pin socket electrode jack 23 of the two-pin socket shell 51 and inserted. The two-pin plug rotating tube 17 is rotated clockwise to make the two-pin plug electrode 10 push open the two-pin socket child protection door 20 and insert it into the socket. During the rotation process, there should be a thrust to make the safety plug contact with the ordinary socket. In the three-pin plug, the three-pin plug self-locking column 24 of the safety plug is pulled out until the three-pin plug self-locking column extends out of the limit plate 31, and then it is fixed by the three-pin plug self-locking column fastening screw 25. The three-pin plug power supply 40 is rotated counterclockwise through the three-pin plug rotating tube 41. The three-pin plug electrode 34 is received into the inner cavity of the safety plug, the three-pin plug self-locking column 50 of the safety plug is aligned with the three-pin socket self-locking hole 42 of the safety socket, and the three-pin plug is rotated clockwise for a certain angle. After reaching the three-pin plug self-locking column limit groove 35, the three-pin plug rotating tube 41 is continuously rotated clockwise. The three-pin plug electrode 34 pushes open the child protection door 44 of the three-pin socket and inserts it into the safety socket. It only needs to be rotated to enter. At this time, the safety plug and the safety socket are in a self-locking state. During the rotation process, a certain thrust should be applied to the safety plug to reduce the pulling force between the three-pin plug self-locking column 50 and the three-pin socket self-locking hole 42 and the outer body 39 of the plug in the three-pin plug. When separation is required, the three-pin plug rotating tube 41 is rotated counterclockwise to pull the three-pin plug electrode 34 out of the safety socket and retract it into the inner cavity of the plug. Then, the three-pin plug self-locking column 50 is continuously rotated counterclockwise to unlock the three-pin plug, so that the safety plug is separated from the safety socket.When the safety plug is in use, there is no exposed electrode 34 of the three-pin plug with electricity, and the safety of electricity is guaranteed from the structure. The self-locking safety three-pin plug of the present invention can be matched with an ordinary socket after the three-pin plug self-locking column 24 is retracted to the three-pin plug self-locking column retracted into the limit plate 32 and fixed by the three-pin plug self-locking column fastening screw 25. After the three-pin plug electrode 34 is slightly exposed from the plug outer body 39 of the three-pin plug, it is aligned with the socket position of the socket, and the three-pin plug rotating tube 41 is rotated clockwise to make the three-pin plug electrode 34 push open the child protection door and insert it into the socket. During the rotation process, there should be a thrust to make the safety plug contact with the ordinary socket. If separation is required, the three-pin plug rotating tube 41 is rotated counterclockwise to separate the three-pin plug electrode 34 from the socket. During the whole process, the three-pin plug electrode 34 will not be exposed with electricity.

[0064] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety socket with a self-locking safety plug, characterized in that: The invention comprises: a two-pin plug, a three-pin plug, a two-pin socket and a three-pin socket, wherein the two-pin plug comprises two two-pin plug middle plug outer bodies (15), the two two-pin plug middle plug outer bodies (15) are movably connected, the two-pin plug middle plug outer bodies (15) are internally movably connected with a two-pin plug self-locking column (1), the two-pin plug middle plug outer bodies (15) are internally provided with a two-pin plug self-locking column slide groove (3), the two-pin plug self-locking column slide groove (3) is internally movably connected with a two-pin plug The plug self-locking column fastening screw (2), the two-pin plug self-locking column slide groove (3) is fixedly installed with a two-pin plug reinforcing rib (4) on the outside, the two-pin plug self-locking column (1) is respectively fixedly installed with two two-pin plug self-locking column extension limit plates (8) and two-pin plug self-locking column retraction limit plates (9), the two-pin plug self-locking column (1) is fixedly installed on the outside of the two-pin plug self-locking column retraction limit plate (9), and the two-pin plug outer body (15) is provided with two A two-pin plug electrode hole (5), a two-pin plug fastening hole (6) is provided on the outside of the plug outer body (15) of the two-pin plug, the plug outer body (15) of the two-pin plug is movably connected with a two-pin plug rotating tube (17), a two-pin plug power supply (16) is arranged inside the two-pin plug rotating tube (17), the outside of the two-pin plug power supply (16) and the inside of the two-pin plug rotating tube (17) are provided with two-pin plug multi-head large lead threads (12) for use with each other, two two-pin plug electrodes (10) are fixedly installed on the outside of the two-pin plug power supply (16), a two-pin plug power supply electrode notch (14) is provided on the outside of the two-pin plug power supply (16), a two-pin socket is plugged into the outside of the two-pin plug electrode (10), a two-pin plug positioning hole (13) is provided on the outside of the plug outer body (15) of the two-pin plug, and two two-pin plug outer body limiting grooves (53) are provided inside the plug outer body (15) of the two-pin plug; The three-pin plug comprises two three-pin plug middle plug outer bodies (39), the two three-pin plug middle plug outer bodies (39) are movably connected, the inner part of the three-pin plug middle plug outer body (39) is movably connected with a three-pin plug self-locking column (24), the inner part of the three-pin plug middle plug outer body (39) is provided with a three-pin plug self-locking column slide groove (26), the inner part of the three-pin plug self-locking column slide groove (26) is movably connected with a three-pin plug self-locking column fastening screw (25), and the three-pin plug self-locking column (24) is The outer part of the three-pin plug is fixedly installed with two three-pin plug self-locking column extension limit plates (31) and a three-pin plug self-locking column retracting limit plate (32), the outer part of the three-pin plug self-locking column retracting limit plate (32) is fixedly installed with a three-pin plug self-locking column (24), the outer part of the three-pin plug self-locking column slide groove (26) is fixedly installed with a three-pin plug reinforcement rib (27), the outer part of the three-pin plug middle plug outer body (39) is provided with a plurality of three-pin plug electrode holes (28), and the outer part of the three-pin plug middle plug outer body (39) is fixedly installed with a three-pin plug self-locking column (24). A plurality of three-pin plug positioning holes (37) are provided on the outside, a three-pin plug outer body (39) is movably connected to a three-pin plug rotating tube (41) inside the three-pin plug rotating tube (41), a three-pin plug power supply (40) is provided inside the three-pin plug rotating tube (41), three three-pin plug electrodes (34) are fixedly installed on the outside of the three-pin plug power supply (40), and the outside of the three-pin plug power supply (40) and the inside of the three-pin plug rotating tube (41) are provided with three-pin plug multi-head large lead for use with each other. A thread (36), a three-pin plug power supply electrode notch (38) is provided on the outside of the three-pin plug power supply (40), a three-pin socket is plugged into the outside of the three-pin plug electrode (34), a plurality of three-pin plug fastening holes (29) are provided on the outside of the three-pin plug middle plug outer body (39), a three-pin plug rotating tube limiting ring (33) is fixedly installed on the outside of the three-pin plug rotating tube (41), and two three-pin plug outer body limiting grooves (54) are provided in the three-pin plug middle plug outer body (39); The two-pin socket comprises a two-pin socket shell (51), the two-pin socket shell (51) is provided with a two-pin socket self-locking hole (18) on the outside, the two-pin socket shell (51) is provided with two two-pin socket electrode plug holes (23) on the outside, a two-pin socket rotation limiting ring (19) is fixedly installed inside the two-pin socket shell (51), and the two-pin socket rotation limiting ring (19) is provided with a two-pin plug self-locking column limiting groove (11) inside; The three-pin socket comprises a three-pin socket shell (52), the three-pin socket shell (52) is provided with a three-pin socket electrode jack (48) on the outside, the three-pin socket shell (52) is provided with a three-pin socket self-locking hole (42) on the outside, the three-pin socket shell (52) is provided with a three-pin socket rotation limiting ring (43) fixedly installed inside the three-pin socket shell (52), and the three-pin socket rotation limiting ring (43) is provided with a three-pin plug self-locking column limiting groove (35) inside; A two-pin plug rotation slot (7) is provided on the outside of the two-pin plug rotation tube (17), and the plug outer body (15) of the two-pin plug is snap-connected to the outside of the two-pin plug rotation slot (7); A three-pin plug rotation slot (30) is provided on the outside of the three-pin plug rotation tube (41), and the plug outer body (39) in the three-pin plug is clamped on the outside of the three-pin plug rotation slot (30); The three-pin plug self-locking column (24) is slidably connected to the interior of the plug outer body (39) in the three-pin plug; The two-pin plug self-locking column (1) is slidably connected to the interior of the plug outer body (15) in the two-pin plug; The two-pin plug self-locking column fastening screw (2) is threadedly connected to the outside of the two-pin plug self-locking column (1), and the three-pin plug self-locking column fastening screw (25) is threadedly connected to the outside of the three-pin plug self-locking column (24); During use, when it is necessary to connect the power supply, the two-pin plug self-locking column (1) of the safety plug is pulled out to the two-pin plug self-locking column limit groove (11), and then fixed by the two-pin plug self-locking column fastening screw (2). The movable two-pin plug power supply (16) is rotated counterclockwise through the two-pin plug rotating tube (17) so that the two-pin plug electrode (10) is received into the inner cavity of the safety plug. The two-pin plug self-locking column (1) of the safety plug is aligned with the two-pin socket self-locking hole (18) of the two-pin socket housing (51), and then rotated to the two-pin plug self-locking column limit groove (11), and then the two-pin plug rotating tube (17) is continuously rotated clockwise. At this time, the safety plug and the safety plug are aligned. When the seat is in a self-locking state, a certain thrust is applied to the safety plug during the rotation process, so that the two-pin plug self-locking column (1) reduces the pulling force between the two-pin socket self-locking hole (18) and the plug outer body (15) in the two-pin plug. When separation is required, the two-pin plug rotating tube (17) is rotated counterclockwise to pull the two-pin plug electrode (10) out of the safety socket and retract it into the plug cavity. The two-pin plug self-locking column (1) is then continuously rotated counterclockwise to unlock the two-pin plug self-locking column, so that the safety plug is separated from the safety socket. After the two-pin plug self-locking column (1) is retracted to the two-pin plug self-locking column retracted into the limit plate (9), it is fixed by the two-pin plug self-locking column fastening screw (2) and can be matched with an ordinary socket.

2. A safety socket with self-locking safety plug according to claim 1, characterized in that: Two-pin socket limit circle middle inclined surfaces (21) are provided on both sides of the two-pin socket rotation limit circle (19), a two-pin socket child protection door (20) is installed inside the two-pin socket shell (51) via a spring, and a two-pin socket child protection door return stop point (22) is provided inside the two-pin socket shell (51).

3. A safety socket with self-locking safety plug according to claim 1, characterized in that: A three-pin socket child protection door (44) is installed inside the three-pin socket housing (52) via a spring, a three-pin socket child protection door inner limiting edge (46) is provided inside the three-pin socket rotation limiting ring (43), a three-pin socket child protection door outer limiting edge (45) is provided inside the three-pin socket housing (52), and a three-pin socket child protection door return stop point (47) is integrally formed inside the three-pin socket housing (52).

4. A safety socket with self-locking safety plug according to claim 1, characterized in that: The inner wall groove width of the two-pin plug power electrode notch (14) is greater than the outer wall diameter of the two-pin plug reinforcement rib (4).

5. A safety socket with self-locking safety plug according to claim 1, characterized in that: The inner wall groove width of the three-pin plug power electrode notch (38) is greater than the outer wall diameter of the three-pin plug reinforcement rib (27).

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