Wall USB charging socket safety protection device

Abstract

The application discloses a wall USB charging socket safety protection device, and relates to the technical field of charging socket safety protection, which comprises a shell and a multi-linkage rotary safety module, wherein the inner wall back of the shell is provided with the multi-linkage rotary safety module; the multi-linkage rotary safety module comprises a plug rod, an inclined plane push piece and a linkage gear. The multi-linkage rotary safety module is installed, the plug-in protection function is realized, the problem that children are electrically shocked due to accidental touch of the plug-in socket is solved, the safety protection level of the charging socket is improved, and the automatic reset is used without manual operation, so that the user experience is natural and simple.

Description

Technical Field

[0001] This invention relates to the field of charging socket safety protection technology, specifically a safety protection device for a wall-mounted USB charging socket. Background Technology

[0002] With the widespread use of portable electronic devices such as smartphones and tablets, the demand for wall-mounted USB charging sockets in homes and offices has grown rapidly. Conventional USB sockets typically use simple physical covers or single-sided spring protection mechanisms, failing to provide dynamic closure protection for the socket channels, resulting in the sockets being exposed for extended periods. When children accidentally insert metal objects or foreign objects, they can easily touch the internal conductive parts, posing a significant risk of electric shock and short circuit.

[0003] Patent CN102394421B discloses a safety protection device for a vehicle charging socket. The patent ensures that the socket end of the socket body is not easily exposed when not in use, which can effectively prevent electric shock and thus provide safety protection for users. When the vehicle socket needs to be used, the user only needs to release the locking mechanism from locking the socket body and socket cover.

[0004] The aforementioned patented components are technologically mature, low in cost, and reliable in operation; they are also simple in structure and easy to operate. However, during the use of the sockets, there is a risk of children accidentally touching them and causing danger.

[0005] Therefore, this application proposes a wall-mounted USB charging socket safety protection device that can achieve mechanical linkage closure and forced protection. Summary of the Invention

[0006] The purpose of this invention is to provide a safety protection device for a wall-mounted USB charging socket, in order to solve the technical problem mentioned in the background art, which is that when children accidentally insert metal objects or foreign objects, they are very likely to touch the internal conductive parts, resulting in a great risk of electric shock and short circuit.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a safety protection device for a wall-mounted USB charging socket, comprising a housing and a multi-linkage rotating safety module, wherein the multi-linkage rotating safety module is installed on the back of the inner wall of the housing; The multi-linkage rotational safety module includes: a plug rod, an inclined push plate, and a linkage gear; Two sets of linkage shafts are fixedly installed on the back of the inner wall of the outer casing. Linkage gears are fixedly fitted on the outer wall of the linkage shafts, and the outer walls of the two sets of linkage gears mesh. A plug rod is fixedly fitted on the outer wall of the linkage shaft. An inclined push plate is fixedly installed on the outer wall of the plug rod. A pull spring is wrapped around the outer wall of the linkage shaft, and the other end of the pull spring is fixed to the side of the inner wall of the outer casing. A stop bar is fixedly installed on the side of the outer wall of the plug rod. A pin seat is fixedly installed on the back of the inner wall of the outer casing. A plug-in channel is opened inside the outer casing, and the pin seat is located at the far end of the plug-in channel.

[0008] Preferably, a self-resetting trip module is fixedly installed on the back of the inner wall of the housing. The self-resetting trip module is used to automatically cut off the power supply when the socket is overheated or overcurrent. The self-recovering trip module includes: a shape memory alloy sheet, an energized slider, and an interface block; A shape memory alloy sheet is fixedly installed on the back of the inner wall of the outer shell. A base plate is fixedly installed on the front of the outer wall of the shape memory alloy sheet. An electric slider is fixedly installed on the front of the outer wall of the base plate. An interface block is fixedly installed on the back of the outer wall of the pin socket through a power cord. The electric slider is connected to the cable interface on the wall through a power cord.

[0009] Preferably, a sliding track groove is fixedly installed on the inner wall side of the outer shell, and the two sides of the bottom plate are engaged in sliding within the sliding track groove. A self-resetting spring is fixedly installed on the inner wall of the outer shell, and one end of the self-resetting spring is fixedly connected to the outer wall of the bottom plate. The shape memory alloy sheet is connected to the pin socket through a power cord.

[0010] Preferably, the outer wall of the outer shell is connected to a rotating plug cover via a dual-action insertion labyrinth confirmation module; The dual-action insertion maze confirmation module includes: a rotating cover, a first sleeve, and a second sleeve; A second sleeve is fixedly installed on the front of the outer wall of the outer casing. The first sleeve is movably fitted onto the outer wall of the second sleeve. A rotating plug is fixedly installed on the front of the outer wall of the first sleeve.

[0011] Preferably, the outer wall of the second sleeve has an insertion hole, and a limit rod is fixedly installed on the back of the outer wall of the first sleeve, and the limit rod cooperates with the insertion hole.

[0012] Preferably, an electromagnetic lock control module is fixedly installed on the inner wall side of the outer casing; The electromagnetic lock control module includes: a microcontroller, an electromagnetic coil, and a locking pin; A microcontroller is fixedly installed on the inner side of the outer casing. The microcontroller is connected to the pin socket via a power cord. An electromagnetic coil is fixedly installed inside the microcontroller via a power signal line. A locking pin is fixedly installed on the outer side of the microcontroller via a magnetic pole channel. A resistance spring is wrapped around the outer side of the locking pin. One end of the resistance spring is fixedly installed inside the magnetic pole channel, and the other end is fixedly installed on the head of the locking pin.

[0013] Preferably, a limiting lock hole is provided on the outer side of the insertion rod, and the head of the locking pin can be inserted into the limiting lock hole.

[0014] Preferably, a temperature sensor is fixedly installed on the top of the inner wall of the housing, and an alarm is fixedly installed on the top of the outer wall of the housing. The temperature sensor and the alarm are connected through a signal line, and the temperature sensor is connected to the microcontroller through a data signal line.

[0015] Preferably, a heat dissipation module is fixedly installed on the front of the inner wall of the outer casing; The heat dissipation module includes: a first micro motor, a first rotating shaft, and a cooling fan; A first micro motor is fixedly installed on the front of the inner wall of the outer casing. The first micro motor is connected to the temperature sensor through a data signal line. A first rotating shaft is fixedly installed on the front of the outer wall of the first micro motor. A cooling fan is fixedly mounted on the outer wall of the first rotating shaft.

[0016] Preferably, a ventilation window is fixedly installed on the front of the outer wall of the outer shell, a mounting bracket is fixedly installed on the back of the outer shell, a movable hinge is fixedly installed on the top of the outer wall of the outer shell, and a protective cover is fixedly installed on the front of the outer wall of the movable hinge.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves plug-in protection by installing a multi-linkage rotating safety module, solving the problem of children accidentally touching the socket and getting electric shock, thus improving the safety protection level of the charging socket. At the same time, the automatic reset eliminates the need for manual operation, making the user experience natural and convenient. 2. This invention, by installing a self-resetting trip module, realizes automatic overheat and overcurrent power-off function, solves the problems of fault-induced liveness and accidental contact hazards, and improves the level of safety protection; 3. This invention, by installing a dual-action insertion maze confirmation module, achieves a dual-insertion action protection function, enhances the security level, and realizes highly personalized and dynamic security control; 4. This invention, by installing an electromagnetic lock control module, achieves an active locking function and a remote switch control function, giving the socket a higher level of security management capability. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the front structure of the present invention; Figure 3 This is a schematic diagram of the multi-linkage rotational safety module structure of the present invention; Figure 4 This is a schematic diagram of the self-recovery tripping module structure of the present invention; Figure 5This is a schematic diagram of the dual-action insertion maze confirmation module of the present invention; Figure 6 This is a schematic diagram of the first sleeve structure of the present invention; Figure 7 This is a schematic diagram of the electromagnetic lock control module structure of the present invention; Figure 8 This is a schematic diagram of the heat dissipation module structure of the present invention.

[0019] In the diagram: 1. Outer shell; 2. Movable hinge; 3. Protective cover; 4. Rotating plug cover; 5. Ventilation window; 6. Alarm; 7. Mounting bracket; 8. Insert rod; 9. Angled push plate; 10. Stop bar; 11. Linkage shaft; 12. Linkage gear; 13. Pull wire spring; 14. Pin socket; 15. Insertion channel; 16. Interface block; 17. Powered slider; 18. Base plate; 19. Shape memory alloy sheet; 20. Sliding track groove; 21. Self-resetting spring; 22. First sleeve; 23. Second sleeve; 24. Limiting rod; 25. Insertion hole; 26. Microcontroller; 27. Electromagnetic coil; 28. Locking pin; 29. ​​Resistance spring; 30. Limiting lock hole; 31. Temperature sensor; 32. First micro motor; 33. First shaft; 34. Cooling fan. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Please see Figure 1 , Figure 2 and Figure 3 The present invention provides an embodiment of a wall USB charging socket safety protection device, comprising a housing 1 and a multi-linkage rotating safety module, wherein the multi-linkage rotating safety module is installed on the back of the inner wall of the housing 1; The multi-linkage rotational safety module includes: a plug rod 8, an inclined push plate 9, and a linkage gear 12; Two sets of linkage shafts 11 are fixedly installed on the back of the inner wall of the outer shell 1. Linkage gears 12 are fixedly fitted on the outer wall of the linkage shafts 11, and the outer walls of the two sets of linkage gears 12 mesh. Insert rods 8 are fixedly fitted on the outer wall of the linkage shafts 11. Inclined push plates 9 are fixedly installed on the outer wall of the insert rods 8. Pull wire springs 13 are wrapped around the outer wall of the linkage shafts 11, and the other end of the pull wire springs 13 is fixed to the side of the inner wall of the outer shell 1. A stop bar 10 is fixedly installed on the side of the outer wall of the insert rods 8. A pin seat 14 is fixedly installed on the back of the inner wall of the outer shell 1. An insertion channel 15 is opened inside the outer shell 1, and the pin seat 14 is located at the far end of the insertion channel 15. Furthermore, when the plug is not inserted, the plug rods 8 are held together by the tensioning action of the pull spring 13, with the intersecting stop bars 10 blocking the insertion channel 15. When the plug is correctly inserted into the insertion channel 15, the protrusions on both sides of the plug push the inclined push plate 9, applying a lateral thrust to the inclined push plate 9. After receiving the lateral thrust, the inclined push plate 9 converts the lateral force into an axial force that drives the plug rod 8 to rotate. The inclined push plate 9 drives the plug rod 8 to rotate, the plug rod 8 drives the linkage shaft 11 to rotate, and the linkage shaft 11 drives the linkage gear 12 to rotate. The linkage gears 12 mesh with each other to ensure that the plug rods 8 on both sides are synchronized. When rotated, the insertion rod 8 drives the stop rod 10 to rotate, opening the insertion channel 15 to ensure that the plug and the pin socket 14 are connected and energized. If a foreign object or finger is inserted, the stop rod 10, which is linked to the plug, cannot be released due to the different shape of the protruding shoulders on both sides of the plug. When the plug is pulled out, the pull spring 13 pulls the insertion rod 8 to reverse under the reset action, which drives the stop rod 10 to cross again and form a seal on the insertion channel 15. This greatly improves the ability to prevent children from accidentally inserting objects and prevent foreign objects from being inserted. At the same time, the automatic reset of the spring eliminates the need for manual operation, making the user experience natural and simple, and solving the contradiction between the durability and ease of operation of traditional protective doors.

[0024] Please see Figure 3 , Figure 4 , Figure 7 and Figure 8 The present invention provides an embodiment of a wall USB charging socket safety protection device, wherein a self-resetting trip module is fixedly installed on the back of the inner wall of the outer shell 1, and the self-resetting trip module is used to automatically cut off the power supply when the socket is overheated or overcurrent. The self-recovering trip module includes: a shape memory alloy sheet 19, an energized slider 17, and an interface block 16; A shape memory alloy sheet 19 is fixedly installed on the back of the inner wall of the outer shell 1. A base plate 18 is fixedly installed on the front of the outer wall of the shape memory alloy sheet 19. An electric slider 17 is fixedly installed on the front of the outer wall of the base plate 18. An interface block 16 is fixedly installed on the back of the outer wall of the pin socket 14 through a power cord. The electric slider 17 is connected to the cable interface on the wall through a power cord. The inner wall of the outer shell 1 is fixedly installed with a sliding track groove 20, and the two sides of the bottom plate 18 are engaged in sliding within the sliding track groove 20. A self-resetting spring 21 is fixedly installed on the inner wall of the outer shell 1, and one end of the self-resetting spring 21 is fixedly connected to the outer wall of the bottom plate 18. The shape memory alloy sheet 19 is connected to the pin socket 14 through a power cord. Furthermore, when a short circuit or excessive load occurs inside the pin socket 14, local overcurrent heat accumulates, the shape memory alloy sheet 19 deforms and shrinks due to heat. The shape memory alloy sheet 19 pulls the base plate 18 to slide along the sliding track groove 20. The base plate 18 drives the energized slider 17 to slide. The base plate 18 pulls the self-resetting spring 21 to extend and deform. At this time, the energized slider 17 automatically disengages from the interface block 16, changing from the initial energized state connected to the interface block 16 to the disconnected state. The pin socket 14 no longer supplies power to the plug or accidentally inserted metal object, realizing accidental contact protection and reducing the risk of electric shock. When the anti-accidental contact is made or the circuit is repaired, the shape memory alloy sheet 19 cools down and returns to its original shape. The stretched self-recovering spring 21 contracts and pulls the base plate 18 to slide in the sliding track groove 20, pulling the energized slider 17 on the base plate 18 to re-contact the interface block 16 to supply power, thus realizing the self-recovery power supply function after overcurrent and overheating. Unlike traditional one-time thermal fuses or those that rely solely on software-based power cutoff, this device employs a self-recovering mechanical tripping mechanism. This allows for real-time response to overcurrent or overheat protection circuits and automatic closure after the fault is cleared, eliminating the need for component replacement. Due to its mechanical nature, it offers a fast and reliable response with no risk of electronic malfunction. Furthermore, when combined with an electromagnetic locking module, it ensures that the power supply is not only cut off in the event of a fault but also that the socket is physically locked to prevent contact with live wires.

[0025] Please see Figure 5 and Figure 6The present invention provides an embodiment of a wall-mounted USB charging socket safety protection device, wherein the outer wall of the outer shell 1 is connected to a rotating plug cover 4 via a dual-action insertion maze confirmation module; The dual-action insertion maze confirmation module includes: a rotating cover 4, a first sleeve 22, and a second sleeve 23; A second sleeve 23 is fixedly installed on the front of the outer wall of the outer shell 1. The first sleeve 22 is movably fitted on the outer wall of the second sleeve 23. A rotating plug 4 is fixedly installed on the front of the outer wall of the first sleeve 22. The second sleeve 23 has an insertion hole 25 on its outer wall, and a limit rod 24 is fixedly installed on the back of the outer wall of the first sleeve 22, and the limit rod 24 cooperates with the insertion hole 25. Furthermore, when the charging socket is needed, rotate the rotating cover 4. Rotating the cover 4 causes the first sleeve 22 to rotate around the second sleeve 23. After adjusting to the appropriate position, push the rotating cover 4 inward. Rotating the cover 4 causes the first sleeve 22 to feed onto the second sleeve 23, pushing the limiting rod 24 on the rotating cover 4 into the insertion hole 25 on the outer shell 1 to form a locking fit. At this time, the inlet of the rotating cover 4 is aligned with the insertion channel 15 to ensure that the plug can be accurately inserted into the socket. After use, pull outward and rotate the plug cover 4. Rotating the plug cover 4 will prevent the plug cover 4 from forming a natural and effective alignment with the plugging channel 15 inside the outer shell 1, thus achieving the child-proof anti-accidental touch function. Ordinary children cannot understand or perform this dual operation, thus further protecting against accidental insertion.

[0026] Please see Figure 2 , Figure 7 and Figure 8 The present invention provides an embodiment of a wall-mounted USB charging socket safety protection device, wherein an electromagnetic lock control module is fixedly installed on the inner wall side of the outer shell 1; The electromagnetic lock control module includes: a microcontroller 26, an electromagnetic coil 27, and a locking pin 28; A microcontroller 26 is fixedly installed on the inner side of the outer casing 1. The microcontroller 26 is connected to the pin socket 14 via a power cord. An electromagnetic coil 27 is fixedly installed inside the microcontroller 26 via a power signal line. A locking pin 28 is fixedly installed on the outer side of the microcontroller 26 via a magnetic pole channel. A resistance spring 29 is wrapped around the outer side of the locking pin 28. One end of the resistance spring 29 is fixedly installed in the magnetic pole channel, and the other end is fixedly installed on the head of the locking pin 28. The outer side of the insertion rod 8 has a limiting lock hole 30, and the head of the locking pin 28 can be inserted into the limiting lock hole 30; the temperature sensor 31 is connected to the microcontroller 26 through a data signal line; Furthermore, the microcontroller 26 receives abnormal temperature data from the temperature sensor 31, identifies the load status of the pin socket 14 circuit through the power cord, or initiates an active switch command via remote control software. When no overheating or overcurrent occurs, the microcontroller 26 energizes the electromagnetic coil 27, causing the electromagnetic coil 27 to generate a magnetic field that draws the locking pin 28 into the microcontroller 26 through the magnetic pole channel, releasing the locking pin 28 from its limiting effect on the plug rod 8, allowing the plug rod 8 to rotate and thus enabling the charging switch to open. When overheating or overcurrent occurs, the microcontroller 26 actively cuts off the power, and the locking pin 28 is driven out during the recovery deformation of the resistance spring 29, inserting into the limiting locking hole 30 on the plug rod 8 to lock the plug rod 8. This achieves both active plug insertion permission and active locking protection in case of abnormal insertion. Unlike ordinary socket overload protection, this design can actively mechanically lock when an abnormality is detected to prevent further accidents. Moreover, by embedding a network module or mobile app, it can realize intelligent functions such as remote switch control and timed power-off, giving the socket a higher level of safety management capabilities.

[0027] Please see Figure 1 , Figure 2 and Figure 8 An embodiment of the present invention provides a safety protection device for a wall-mounted USB charging socket, wherein a temperature sensor 31 is fixedly installed on the top of the inner wall of the outer shell 1, and an alarm 6 is fixedly installed on the top of the outer wall of the outer shell 1, and the temperature sensor 31 and the alarm 6 are connected through a signal line, and the temperature sensor 31 is connected to a microcontroller 26 through a data signal line. A heat dissipation module is fixedly installed on the front of the inner wall of the outer casing 1; The heat dissipation module includes: a first micro motor 32, a first rotating shaft 33, and a cooling fan 34; A first micro motor 32 is fixedly installed on the front of the inner wall of the outer casing 1. The first micro motor 32 is connected to the temperature sensor 31 through a data signal line. A first rotating shaft 33 is fixedly installed on the front of the outer wall of the first micro motor 32. A cooling fan 34 is fixedly mounted on the outer wall of the first rotating shaft 33. A ventilation window 5 is fixedly installed on the front of the outer wall of the outer shell 1, a mounting bracket 7 is fixedly installed on the back of the outer shell 1, a movable hinge 2 is fixedly installed on the top of the outer wall of the outer shell 1, and a protective cover 3 is fixedly installed on the front of the outer wall of the movable hinge 2. Furthermore, the temperature sensor 31 monitors the temperature data inside the housing 1 in real time and transmits the data to the alarm 6. When the temperature data received by the alarm 6 exceeds the upper limit of the threshold, an alarm sound and light are emitted. When the temperature sensor 31 detects an abnormal temperature, it sends a heat dissipation and cooling signal to the first micro motor 32. The first micro motor 32 starts and drives the first rotating shaft 33 to rotate. The first rotating shaft 33 drives the cooling fan 34 to rotate. The cooling fan 34 blows the heat inside the housing 1 out through the vent 5 to prevent damage to electronic components and the risk of electric shock due to prolonged high temperature inside the housing 1. The movable hinge 2 connects the housing 1 and the protective cover 3. The protective cover 3 protects the housing 1 from moisture and dust and provides mechanical protection to prevent children from contacting it.

[0028] Working principle: The insertion action is protected by a dual-action insertion maze confirmation module and a multi-linkage rotation safety module to prevent children from accidentally inserting their fingers or metal objects into the socket. The electromagnetic lock control module enables active locking and release of the multi-linkage rotating safety module. It can actively lock according to the usage needs and safety protection requirements, further preventing children from accidentally inserting objects and causing electric shock hazards. In the event of accidental insertion or current overload, the self-resetting trip module provides active power-off protection to prevent further damage or the risk of live repair.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A safety protection device for a wall-mounted USB charging socket, comprising a housing (1) and a multi-linkage rotating safety module, characterized in that: A multi-linkage rotation safety module is installed on the back of the inner wall of the outer shell (1); The multi-linkage rotation safety module includes: a plug rod (8), an inclined push plate (9), and a linkage gear (12); Two sets of linkage shafts (11) are fixedly installed on the back of the inner wall of the outer shell (1). Linkage gears (12) are fixedly fitted on the outer wall of the linkage shafts (11), and the outer walls of the two sets of linkage gears (12) mesh. Insert rods (8) are fixedly fitted on the outer wall of the linkage shafts (11). Inclined push plates (9) are fixedly installed on the outer wall of the insert rods (8). Pull wire springs (13) are wrapped around the outer wall of the linkage shafts (11), and the other end of the pull wire springs (13) is fixed to the side of the inner wall of the outer shell (1). A stop bar (10) is fixedly installed on the side of the outer wall of the insert rods (8). A pin seat (14) is fixedly installed on the back of the inner wall of the outer shell (1). A plug-in channel (15) is opened inside the outer shell (1), and the pin seat (14) is located at the far end of the plug-in channel (15). An electromagnetic lock control module is fixedly installed on the inner wall side of the outer shell (1); The electromagnetic lock control module includes: a microcontroller (26), an electromagnetic coil (27), and a locking pin (28). A microcontroller (26) is fixedly installed on the inner wall side of the outer casing (1). The microcontroller (26) is connected to the pin socket (14) via a power cord. An electromagnetic coil (27) is connected inside the microcontroller (26) via a power signal line. A locking pin (28) is fixedly installed on the outer wall side of the microcontroller (26) via a magnetic pole channel. A resistance spring (29) is surrounded on the outer wall side of the locking pin (28). One end of the resistance spring (29) is fixedly installed in the magnetic pole channel, and the other end is fixedly installed on the head of the locking pin (28). The outer side of the insert (8) has a limiting lock hole (30) and the head of the locking pin (28) can be inserted into the limiting lock hole (30).

2. The wall-mounted USB charging socket safety protection device according to claim 1, characterized in that: A self-resetting trip module is fixedly installed on the back of the inner wall of the outer shell (1). The self-resetting trip module is used to automatically cut off the power supply when the socket is overheated or overcurrent. The self-recovering trip module includes: a shape memory alloy sheet (19), an energized slider (17), and an interface block (16). A shape memory alloy sheet (19) is fixedly installed on the back of the inner wall of the outer shell (1). A base plate (18) is fixedly installed on the front of the outer wall of the shape memory alloy sheet (19). A power slider (17) is fixedly installed on the front of the outer wall of the base plate (18). An interface block (16) is connected to the back of the outer wall of the pin socket (14) via a power cord. The power slider (17) is connected to the cable interface on the wall via a power cord.

3. A safety protection device for a wall-mounted USB charging socket according to claim 2, characterized in that: The inner wall of the outer shell (1) is fixedly installed with a sliding track groove (20), and the two sides of the bottom plate (18) are engaged in sliding within the sliding track groove (20). A self-resetting spring (21) is fixedly installed on the inner wall of the outer shell (1), and one end of the self-resetting spring (21) is fixedly connected to the outer wall of the bottom plate (18). The shape memory alloy sheet (19) is connected to the pin socket (14) through a power cord.

4. A safety protection device for a wall-mounted USB charging socket according to claim 1, characterized in that: The outer wall of the outer shell (1) is connected to the rotating plug cover (4) by a double-action insertion maze confirmation module. The dual-action insertion maze confirmation module includes: rotating plug (4), first sleeve (22), and second sleeve (23); The outer wall of the outer shell (1) is fixedly installed with a second sleeve (23), the outer wall of the second sleeve (23) is movably fitted with a first sleeve (22), and the outer wall of the first sleeve (22) is fixedly installed with a rotating plug (4).

5. A safety protection device for a wall-mounted USB charging socket according to claim 4, characterized in that: The second sleeve (23) has an insertion hole (25) on its outer wall, and a limit rod (24) is fixedly installed on the back of the outer wall of the first sleeve (22), and the limit rod (24) and the insertion hole (25) cooperate with each other.

6. A safety protection device for a wall-mounted USB charging socket according to claim 1, characterized in that: A temperature sensor (31) is fixedly installed on the top of the inner wall of the housing (1), and an alarm (6) is fixedly installed on the top of the outer wall of the housing (1). The temperature sensor (31) and the alarm (6) are connected through a signal line, and the temperature sensor (31) is connected to the microcontroller (26) through a data signal line.

7. A safety protection device for a wall-mounted USB charging socket according to claim 1, characterized in that: A heat dissipation module is fixedly installed on the front of the inner wall of the outer shell (1); The heat dissipation module includes: a first micro motor (32), a first rotating shaft (33), and a cooling fan (34); The first micro motor (32) is fixedly installed on the front of the inner wall of the outer casing (1). The first micro motor (32) is connected to the temperature sensor (31) through a data signal line. The first shaft (33) is fixedly installed on the front of the outer wall of the first micro motor (32). A cooling fan (34) is fixedly mounted on the outer wall of the first shaft (33).

8. A safety protection device for a wall-mounted USB charging socket according to claim 1, characterized in that: A ventilation window (5) is fixedly installed on the front of the outer wall of the outer shell (1), a mounting bracket (7) is fixedly installed on the back of the outer shell (1), a movable hinge (2) is fixedly installed on the top of the outer wall of the outer shell (1), and a protective cover (3) is fixedly installed on the front of the outer wall of the movable hinge (2).

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