High safety discharge socket

Abstract

The application discloses a high-safety discharge socket, which comprises a socket shell with a hollow cavity, a PCB substrate and a plug core module arranged in the hollow cavity, the plug core module is internally provided with a group of plug sleeves for connecting a plug, the panel is provided with a group of plug holes matched with the plug sleeves, the tail ends of the plug sleeves are arranged on the PCB substrate and are electrically connected through a connecting circuit, a control switch of the connecting circuit is fixed on the PCB substrate and is internally arranged in the plug core module, the extension direction of the control switch is consistent with the plug sleeves, the trigger end of the control switch is located at the front end, the trigger end does not protrude outward from the front end of the plug sleeve, and the plug core module is internally provided with a moving piece opposite to the trigger end and axially movable relative to the trigger end. The moving piece arranged in the same direction with the plug can trigger the control switch to connect the connecting circuit when the plug is inserted into the plug sleeve, so that the safety of the socket discharge is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power socket, in particular to a high-safety discharging socket. BACKGROUND

[0002] In the existing electric vehicle powered by a battery system, in order to adapt to different use scenarios and use requirements, a charging and discharging integrated charging system is provided, and a discharging socket matched with the charging system is also provided. The existing discharging socket generally has more than one socket to access power. Such an access type socket has openness, which is easy to cause electric shock due to misoperation, and is also easy to misenter foreign matter or be eroded by water vapor in the external environment. Therefore, a safety door is arranged in the existing socket to shield the socket for protection, as disclosed in the publication No. CN 106532323 A. However, for electric vehicles, the voltage connected during charging is high, and only the safety door structure is insufficient to ensure the use safety.

[0003] As disclosed in the publication No. CN 102544916 A, a micro switch is arranged in the socket panel to detect whether the plug is inserted, thereby ensuring the normal operation of the charging mode of the electric vehicle. However, the socket panel in this scheme only supports a three-hole plug and cannot adapt to a two-hole plug. On the other hand, the trigger end of the micro switch is triggered by sliding on the side slope of the safety door, and there is an included angle between the moving direction of the trigger end and the moving direction of the side slope. Such a driving mode is easy to cause damage to the trigger end of the micro switch, thereby causing trigger failure or instability, and even the position of the entire micro switch is easy to move, which causes trigger deviation, and it is difficult to ensure the safety of long-term use. SUMMARY

[0004] The purpose of the present application is to overcome the deficiencies in the prior art and provide a high-safety discharging socket.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] The utility model provides a high safety discharging socket, including the socket casing with hollow cavity, the hollow cavity is provided with PCB substrate and the plug module, the plug module is built -in with a group of the socket for connecting the plug, the panel is provided with the jack hole matched with a group of the socket, the tail end of a group of the socket is arranged on the PCB substrate, and the both are electrically connected through the connecting circuit, and the control switch of connecting circuit is fixed on the PCB substrate and is built -in in the plug module, the extension direction of control switch is consistent with the socket, the trigger end of control switch is located at the front end, and the trigger end is not convex to the front end of the socket, the plug module is provided with the moving piece opposite with the trigger end and can trigger the control switch through the axial movement to the trigger end, when the plug is inserted with the socket and drives the moving piece axial movement to axially extrude the trigger end, controls the control switch to turn on the connecting circuit, when the plug is pulled out the socket, the moving piece reverses the axial movement to release the trigger end, controls the control switch to disconnect the connecting circuit.

[0007] Preferably, the inner cavity of the plug module is divided into a first accommodating cavity and a second accommodating cavity from outside to inside, the second accommodating cavity is provided with a first accommodating groove for accommodating the control switch and the moving piece and a second accommodating groove for accommodating the socket, the top of the first accommodating groove is open, and the top of the second accommodating groove is a connecting hole matched with the socket.

[0008] Preferably, the socket comprises at least one pair of electrical connection sockets, and each pair of the electrical connection sockets is provided with a safety door on the top, the safety door is slidingly arranged in the first accommodating cavity, the top surface of the safety door is provided with a first driving slope, and the two ends of the safety door are respectively abutted by first return springs between the inner cavity wall of the plug module, in the initial state, the safety door is located on the top of the pair of electrical connection sockets and covers the connecting hole on the top of the pair of electrical connection sockets; when the plug is inserted, the plug pushes the safety door horizontally through the first driving slope to open the connecting hole and insert the socket.

[0009] Preferably, the top of the first accommodating groove is provided with a guide strip on both sides, the bottom surface of the safety door is provided with a sliding groove matched with the guide strip, so that the safety door translates along the first accommodating groove; the top of the moving piece is elastically convex to the first accommodating groove, and the safety door can drive the moving piece to move axially by translating along the first accommodating groove.

[0010] Preferably, the moving piece comprises a head and a rod, the head has first connecting arms on both sides, the extending ends of the first connecting arms form hooks to be clamped with the top edge of the first accommodating groove; the rod extends axially and is opposite to the trigger end, the inner sides of both sides of the rod form grooves to be slidingly clamped with the side wall protrusions of the first accommodating groove; the rod has second connecting arms on both sides, the second connecting arms are sleeved with second return springs, the other ends of the second return springs abut against the side connecting blocks of the first accommodating groove.

[0011] Preferably, the top surface of the first connecting arm and / or the bottom surface of the safety door is provided with a second driving slope.

[0012] Preferably, the top cover of the plug core module is provided with a gland, the center of the gland is hollow to avoid the connecting hole, the cavity bottom of the first accommodating cavity is provided with a limiting block, the bottom of the safety door is clamped with the limiting block to maintain the initial state.

[0013] Preferably, the connecting circuit further comprises a first relay, a second relay, a fuse and a group of wiring terminals arranged on the PCB substrate.

[0014] Preferably, the connecting circuit is further connected with an indicating lamp, the top end of the indicating lamp is embedded on the socket shell to display the on-off of the connecting circuit by emitting light or being extinguished.

[0015] Preferably, the PCB substrate is further provided with a temperature control switch connected with the connecting circuit.

[0016] The beneficial effects of the present application mainly include:

[0017] 1. The control switch whose trigger direction is consistent with the insertion direction of the plug sleeve is arranged on the connecting circuit, and the moving piece which moves in the same direction with the plug is arranged to move synchronously, so that the plug is inserted into the plug sleeve at the same time, the control switch is triggered to connect the connecting circuit, and then the plug sleeve is powered, and vice versa, when the plug is pulled out, the control switch is disconnected to disconnect the connecting circuit, such a structure makes the socket be powered only when the plug is correctly inserted into the socket, and any non-plug or abnormal plug insertion such as misinsertion of foreign matter, single-pole insertion of the plug will not conduct the connecting circuit, thereby ensuring the safety of the socket discharge;

[0018] 2. A safety door is installed to block the connection hole, so that the socket is isolated from the outside world when not in use, to prevent foreign objects from entering or external environmental corrosion. At the same time, the top of the moving part protrudes out of the first receiving groove and extends into the first receiving cavity, so that the safety door and the moving part are linked. When the plug is inserted and the safety door is pushed open, the moving part is driven to move axially to provide axial extrusion force to the top of the control switch for pressing. This makes the moving part's movement direction consistent with the pressing direction of the control switch's trigger end, thereby protecting the normal triggering of the trigger end and preventing deviation that could lead to friction failure.

[0019] 3. A fuse is connected in the connection circuit to limit the current range that the connection circuit can pass through. When the current is too large, the fuse will melt and cut off the connection circuit to protect the internal components of the socket and prevent overheating and fire risk.

[0020] 4. Indicator lights are provided to visually indicate the continuity of the circuit, making it simple, clear, and easy for users to use;

[0021] 5. A temperature control switch is installed to disconnect the circuit when the PCB substrate or the inside of the socket overheats, further protecting the safety of the socket. Attached Figure Description

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings:

[0023] Figure 1 : A schematic diagram of an embodiment of the present invention;

[0024] Figure 2 : Partial structural schematic diagram of an embodiment of the present invention;

[0025] Figure 3 : Figure 2 A diagram illustrating the removal of the pressure cap;

[0026] Figure 4 : Figure 3 A diagram illustrating the removal of the security door;

[0027] Figure 5 Cross-sectional view of an embodiment of the present invention;

[0028] Figure 6 : Figure 5 An enlarged schematic diagram of part A in the middle;

[0029] Figure 7 : A cross-sectional view of another direction in an embodiment of the present invention. Detailed Implementation

[0030] The application will be described in detail below with reference to the specific embodiments shown in the drawings. However, these embodiments are not limited to the application, and the changes in structure, method, or function made by those of ordinary skill in the art based on these embodiments are included in the protection scope of the application.

[0031] In the description of the scheme, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of description and simplification of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Also, in the description of the scheme, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0032] As shown in Figures 1 to 7 The application discloses a high-safety discharge socket, which comprises a socket shell 1 with a hollow cavity, a PCB substrate 3 and a plug core module 4 arranged in the hollow cavity. The plug core module 4 is internally provided with a group of plug sleeves 401 for connecting a plug. A group of plug holes 101 matched with the plug sleeves 401 are arranged on the panel. The tail ends of the plug sleeves 401 are arranged on the PCB substrate 3 and are electrically connected through a connecting circuit. A control switch 5 of the connecting circuit is fixedly arranged on the PCB substrate 3 and is internally arranged in the plug core module 4. The extension direction of the control switch 5 is consistent with the plug sleeves 401. The trigger end 501 of the control switch 5 is located at the front end thereof, and the trigger end 501 does not protrude outward from the front end of the plug sleeve 401. The plug core module 4 is internally provided with a moving piece 402 opposite to the trigger end 501 and capable of triggering the control switch 5 by moving axially relative to the trigger end 501. When the plug is inserted into the plug sleeve 401, the moving piece 402 is driven to move axially to axially press the trigger end 501, so as to control the control switch 5 to conduct the connecting circuit. When the plug is pulled out of the plug sleeve 401, the moving piece 402 moves reversely to release the trigger end 501, so as to control the control switch 5 to disconnect the connecting circuit.

[0033] The scheme sets a control switch 5 on the connection circuit, which is triggered in the same direction as the insertion direction of the socket 401, and sets a moving part 402 that moves in the same direction as the plug to move synchronously, so that the plug is inserted into the socket 401 at the same time, the control switch 5 can be triggered to connect the connection circuit, and then the socket 401 is powered on. Conversely, when the plug is pulled out, the control switch 5 is disconnected to disconnect the connection circuit. Such a structure makes the socket only powered on when the plug is correctly inserted into the socket. Any non-plug or abnormal plug insertion, such as misinsertion of foreign matter or single-pole insertion of the plug, will not conduct the connection circuit, ensuring the safety of the socket discharge.

[0034] Specifically, the shell of the plug core module 4 is preferably integrally formed by injection molding, and can also be composed of multiple cavities. The inner cavity of the plug core module 4 is divided into a first accommodating cavity 403 and a second accommodating cavity 404 from the outside to the inside. The second accommodating cavity 404 is provided with a first accommodating groove 405 for accommodating the control switch 5 and the moving part 402, and a group of second accommodating grooves 406 for accommodating the socket 401. The top of the first accommodating groove 405 is open to provide a moving space for the moving part 402. The top of the second accommodating groove 406 is a connecting hole 407 matched with the socket 401, so that the plug is inserted into the socket 401.

[0035] A group of the socket 401 at least constitutes a pair of electrical connection sockets. A pair of electrical connection sockets, i.e. a live socket and a neutral socket, can form a double-hole socket to connect a double-head plug. A group of the socket 401 can also include a pair of electrical connection sockets and a grounding socket to form a three-hole socket to connect a three-head plug. A group of the socket 401 can also include two pairs of electrical connection sockets and a grounding socket to form a national standard five-hole socket to meet the needs of double-hole and three-hole plugs.

[0036] The top of each pair of electrical connection sockets is provided with a safety door 408. The safety door 408 is slidingly arranged in the first accommodating cavity 403. The top surface of the safety door 408 has a first driving slope 4081. The two ends of the safety door 408 are respectively abutted by first return springs 409 between the inner cavity wall of the plug core module 4. In the initial state, the safety door 408 is located at the top of a pair of electrical connection sockets and covers the connecting hole 407 at the top of a pair of electrical connection sockets. When the plug is inserted, the plug pushes the safety door 408 horizontally through the first driving slope 4081 to open the connecting hole 407 and insert the socket 401.

[0037] The safety door 408 is arranged to cover the connecting hole 407, so that the socket is isolated from the outside in the non-use state, avoiding the intrusion of foreign objects or the erosion of the external environment. Meanwhile, the top of the moving part 402 protrudes out of the first accommodating groove 405 and extends into the first accommodating cavity 403, so that the safety door 408 and the moving part 402 form linkage. When the plug is inserted to push the safety door 408, the moving part 402 is driven to move axially, so as to provide axial extrusion force to the top trigger end 501 of the control switch 5 to press it, so that the moving direction of the moving part 402 is consistent with the pressing direction of the trigger end 501 of the control switch 5, thereby protecting the normal triggering of the trigger end 501 and preventing the friction caused by deviation.

[0038] In the preferred embodiment shown in the figure, two pairs of the power plug and one ground plug are arranged in the second accommodating cavity 404, so as to form a national standard five-hole socket. Correspondingly, two safety doors 408 are arranged in the first accommodating cavity 403 to cover one pair of the power plug respectively. The bottom of the first accommodating cavity 403 is correspondingly provided with five connecting holes 407. The two safety doors 408 are arranged symmetrically, and the two first return springs 409 are respectively abutted to the inner two ends of the two safety doors 408, so as to realize the mobility of the safety door 408.

[0039] In order to improve the moving stability of the safety door 408, the top of the first accommodating groove 405 is provided with a guide strip 410, and the bottom surface of the safety door 408 has a sliding groove 4082 matched with the guide strip 410, so that the safety door 408 translates along the first accommodating groove 405. The top of the plug core module 4 is provided with a gland 411 for limiting the axial position of the safety door 408 and the first return spring 409. The side of the gland 411 is provided with a buckle for clamping with the clamping block on the outer wall of the shell of the plug core module 4, and the center of the gland 411 is hollow to avoid the connecting hole 407.

[0040] The bottom of the safety door 408 is clamped with the limiting block 412 on the bottom of the first accommodating cavity 403, so as to maintain the initial state. The inner side surface of the limiting block 412 is inclined to facilitate the resetting of the safety door 408.

[0041] The top of the moving part 402 protrudes out of the first accommodating groove 405, and the safety door 408 can drive the moving part 402 to move axially by translating along the first accommodating groove 405.

[0042] Specifically, as shown in FIG. 6, the top of the moving part 402 protrudes out of the first accommodating groove 405, and the safety door 408 can drive the moving part 402 to move axially by translating along the first accommodating groove 405. Figures 5-7As shown, the moving piece 402 comprises a head and a rod, the head has first connecting arms 4021 on both sides, the extending ends of the first connecting arms 4021 form hooks 4022 to be clamped with the top edges of the first accommodating groove 405 to define the limit position of the upward movement of the moving piece 402. The rod extends axially and faces the trigger end 501, the inner sides of both sides of the rod form grooves 4023 to be clamped with the side wall protrusions 4051 of the first accommodating groove 405 to limit the axial movement of the moving piece 402 along the first accommodating groove 405. The rod has second connecting arms 4024 on both sides, the second connecting arms 4024 are sleeved with second return springs 4025, the other ends of the second return springs 4025 abut against the side connecting blocks 4052 of the first accommodating groove 405 to help the moving piece 402 return.

[0043] Preferably, in order to adapt to the structure of the two safety doors 408, the moving piece 402 is preferably symmetrical. Further, in order to improve the linkage fluency between the safety door 408 and the moving piece 402, the top surface of the first connecting arm 4021 and / or the bottom surface of the safety door 408 is provided with a second driving slope 4026.

[0044] Further, in the preferred embodiment, in the initial state of the safety door 408, the moving piece 402 is driven by the second return spring 4025 to be located at the limit position of its upward movement, at this time, the bottom of the rod of the moving piece 402 just contacts the trigger end 501 but does not extrude the trigger end 501, at this time the safety door 408 does not move. Such a structure makes it possible to drive the moving piece 402 to move axially when the safety door 408 starts to move from the initial state, to synchronously extrude the trigger end 501, which not only meets the synchronization of the two but also minimizes the required moving stroke of the moving piece 402.

[0045] As shown in the figure, Figures 2-4 The connection circuit further comprises a first relay 6, a second relay 7, a fuse 8 and a group of wiring terminals 9 arranged on the PCB substrate 3. Specifically, the group of wiring terminals 9 comprises an L-in terminal, an L-out terminal, an N terminal, a PE terminal and a CN2 terminal. The working principle of the connection circuit is as follows: the positive current is input from the L-in terminal to the first relay 6 and then output from the L-out terminal, and the socket current passes through the fuse 8 and the second relay 7 to the live socket; the negative current is input and output in common, the N terminal is connected with the live socket and then output through the CN2 terminal. The PE terminal is connected with the ground socket and is grounded with the negative signal.

[0046] The connecting circuit connects the fuse 8 to define the current range that the connecting circuit can pass through, so that when the current is too large, the fuse 8 is cut off by fusing to protect the internal components of the socket from overheating and fire risk.

[0047] Further, the connecting circuit is further connected with an indicating lamp 10, the top end of the indicating lamp 10 is embedded on the socket shell 1, so as to display the on-off of the connecting circuit by emitting light or being extinguished. Specifically, when the plug is inserted, the control switch 5 is triggered to turn on the connecting circuit, the first relay 6 and the second relay 7 are attracted, the indicating lamp 10 emits high light to display that the socket starts to work; when the plug is pulled out, the control switch 5 is released, the connecting circuit is disconnected, the first relay 6 and the second relay 7 are disconnected, and the indicating lamp 10 is extinguished to display that the socket is closed. The indicating lamp 10 is a LED lamp, which is preferably built in the plug core module 4, of course, in other feasible embodiments, the indicating lamp 10 can also be arranged at other positions to display whether the connecting circuit is turned on or not by light, so as to visualize the on-off of the connecting circuit, which is simple and clear and can facilitate the use of the user.

[0048] On the other hand, the PCB substrate 3 is further provided with a temperature control switch (not shown in the figure), which is connected to the connecting circuit. When the temperature inside the socket or the temperature of the PCB substrate 3 is too high, the connecting circuit is cut off to stop the power supply to the socket 401.

[0049] The socket shell 1 is formed by clamping a lower shell and an upper cover, in other feasible embodiments, the socket shell 1 can also be formed by other ways, for example, integral molding. The socket shell 1 can be provided with mounting holes and steel sleeves to form a connecting structure that can be connected and fixed with other components. The PCB substrate 3 is fixed to the socket shell 1 by screws to ensure the stability of the installation.

[0050] The present application forms a first safety protection structure by setting the moving part 402 and the control switch 5 to form a mechanical structure to control the on-off of the connecting circuit, forms a second safety protection structure by setting the fuse 8 to control the current range, and forms a third safety protection structure by setting the temperature control switch to control the temperature range inside the socket. The present application effectively protects the safe use of the socket by the three safety protection structures, and maximally reduces the use risk.

[0051] It should be understood that although the present specification describes only a single embodiment, the disclosure of features or combinations of features in this specification is not to be construed as an exclusion of the same from other embodiments. It is therefore contemplated that the features and combinations thereof described throughout this specification can be subject to alteration without departing from the scope or spirit of the present disclosure.

[0052] The above detailed description merely describes preferred embodiments of the application, and is not intended to limit the scope of the application. The embodiments described herein are merely given by way of example and are not intended to limit the scope of the application. The description of the embodiments is intended to cover any alternatives, modifications, and equivalents.

Claims

1. A high-safety discharge socket, comprising a socket shell (1) with a hollow cavity, a PCB substrate (3) and a plug pin module (4) being arranged in the hollow cavity, the plug pin module (4) being internally provided with a set of plug sleeves (401) for connecting a plug, a set of plug holes (101) being arranged on a face plate of the socket shell (1) and matching the set of plug sleeves (401), characterized in that: The tail end of a group of the plug sleeves (401) is arranged on the PCB substrate (3), and the two are electrically connected through a connecting circuit. The control switch (5) of the connecting circuit is fixed on the PCB substrate (3) and is built-in in the plug core module (4). The extension direction of the control switch (5) is consistent with the plug sleeve (401). The trigger end (501) of the control switch (5) is located at the front end thereof, and the trigger end (501) does not protrude outward from the front end of the plug sleeve (401). A moving piece (402) that is opposite to the trigger end (501) and can trigger the control switch (5) by moving axially relative to the trigger end (501) is arranged in the plug core module (4). A group of the plug sleeves (401) at least form a pair of electrical plug sleeves. A safety door (408) is arranged at the top of each pair of the electrical plug sleeves. When the plug pushes the safety door (408) and plugs into the plug sleeve (401), the safety door (408) is translated to drive the moving piece (402) to move axially to axially press the trigger end (501), so as to control the control switch (5) to conduct the connecting circuit. When the plug is pulled out of the plug sleeve (401), the moving piece (402) moves reversely axially to release the trigger end (501), so as to control the control switch (5) to disconnect the connecting circuit. The insertion direction of the plug into the plug sleeve (401), the moving direction of the moving piece (402) and the moving direction of the trigger end (501) are the same direction. ​ 2. The high safety discharge socket according to claim 1, characterized in that: The inner cavity of the plug core module (4) is divided into a first accommodating cavity (403) and a second accommodating cavity (404) from outside to inside. The second accommodating cavity (404) is provided with a first accommodating groove (405) for accommodating the control switch (5) and the moving piece (402), and a group of second accommodating grooves (406) for accommodating the plug sleeve (401). The top of the first accommodating groove (405) is an opening, and the top of the second accommodating groove (406) is a connecting hole (407) matched with the plug sleeve (401).

3. The high safety discharge socket according to claim 2, characterized in that: A group of the plug sleeves (401) at least form a pair of electrical plug sleeves. A safety door (408) is arranged at the top of each pair of the electrical plug sleeves. The safety door (408) is slidingly arranged in the first accommodating cavity (403). The top surface of the safety door (408) has a first driving slope (4081). First return springs (409) are respectively arranged between the two ends of the safety door (408) and the inner cavity wall of the plug core module (4). In the initial state, the safety door (408) is located at the top of a pair of the electrical plug sleeves and blocks the connecting holes (407) at the top of a pair of the electrical plug sleeves. When the plug is inserted, the plug horizontally pushes the safety door (408) through the first driving slope (4081), so as to open the connecting holes (407) and plug into the plug sleeve (401).

4. The high safety discharge socket according to claim 3, characterized in that: The top of the first accommodating groove (405) is provided with guide strips (410), and the bottom surface of the safety door (408) is provided with sliding grooves (4082) matched with the guide strips (410), so that the safety door (408) can translate along the first accommodating groove (405); the top of the moving part (402) is elastically protruded out of the first accommodating groove (405), and the safety door (408) can drive the moving part (402) to move axially by translating along the first accommodating groove (405).

5. The high safety discharge socket according to claim 4, characterized in that: The moving part (402) comprises a head and a rod part connected with each other, the head is provided with first connecting arms (4021) on both sides, the extending ends of the first connecting arms (4021) form hooks (4022) to be clamped with the top edges of the first accommodating groove (405); the rod part extends axially and is opposite to the trigger end (501), and the inner sides of both sides of the rod part form grooves (4023) to be clamped and slid with the side wall protrusions (4051) of the first accommodating groove (405); the rod part is provided with second connecting arms (4024) on both sides, the second connecting arms (4024) are provided with second return springs (4025) sleeved thereon, and the other ends of the second return springs (4025) abut against the side connecting blocks (4052) of the first accommodating groove (405).

6. The high safety discharge socket according to claim 5, characterized in that: The top surface of the first connecting arm (4021) and / or the bottom surface of the safety door (408) is provided with a second driving inclined surface (4026).

7. The high safety discharge socket according to claim 6, characterized in that: The top of the ferrule module (4) is provided with a gland (411), the center of the gland (411) is hollow to avoid the connecting hole (407), the cavity bottom of the first accommodating cavity (403) is provided with a limiting clamping block (412), the bottom of the safety door (408) is clamped with the limiting clamping block (412) to maintain the initial state.

8. The high safety discharge socket according to any one of claims 1 to 7, characterized in that: The connecting circuit further comprises a first relay (6), a second relay (7), a fuse (8) and a group of wiring terminals (9) provided on the PCB substrate (3).

9. The high safety discharge socket according to claim 8, characterized in that: The connecting circuit is further connected with an indicating lamp (10), the top end of the indicating lamp (10) is embedded on the socket shell (1), so as to display the on-off of the connecting circuit by emitting light or being extinguished.

10. The high safety discharge socket according to claim 9, characterized in that: The PCB substrate (3) is further provided with a temperature control switch connected with the connecting circuit.

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