Self-off-control socket and charging device

Abstract

The invention discloses a self-off-control socket and a charging device, and is characterized in that the self-off-control socket comprises a socket main body, a plug ejection mechanism and an ejection rod limiting part, the plug ejection mechanism and the ejection rod limiting part are installed in the socket main body, and a socket body matched with a plug in a plugging manner is arranged in the socket main body; the plug ejection mechanism comprises an ejection rod and an ejection rod pushing part, and the ejection rod pushing part has self-resetting force for pushing the ejection rod from the insertion position to the separation position; the ejector rod limiting part comprises a limiting piece movably arranged on the socket main body and a limiting piece driving part for driving the inner end of the limiting piece to be close to or far away from the ejector rod; the ejector rod is provided with a matching part matched with the inner end of the limiting piece, and when the ejector rod is located at the inserting position, the limiting piece limits the ejector rod to move forwards; and when the limiting piece is separated from the matching part, the ejector rod pushing part pushes the ejector rod to move forwards to a separation position. According to the invention, the adaptability is improved, and the safety is also improved.

Description

Technical Field

[0001] The present invention relates to a charging connector, and particularly to a self - disconnecting socket and a charging device. Background Art

[0002] Electrical devices of many vehicles need to be charged, such as emergency vehicles like fire trucks and ambulances. At the same time, there are many hybrid electric vehicles or pure electric vehicles emerging now, all of which need to be charged.

[0003] Currently, when charging devices such as those for fire trucks are working, when a fire truck goes out on an emergency call, the charging sub - line connected to the fire truck preferably can automatically disconnect from the vehicle after the vehicle starts, so as to speed up the emergency response time as much as possible. Similar problems exist in emergency vehicles such as ambulances. Also, in electric vehicles, there is sometimes a situation where the driver may forget that the car is still charging and directly start driving, resulting in damage to the charging plug and the charging socket, posing a relatively large safety hazard.

[0004] Current automatic disconnection charging devices in the market, such as the one with the application number "2015207852981" and the patent name "A Vehicle Automatic Disconnection Charging Controller", in this structure, during the charging process, it is necessary to hook the charging gun through the socket cover plate to prevent the elastic energy storage mechanism from ejecting the charging gun. There are the following deficiencies:

[0005] 1. A boss that cooperates with the socket cover plate must be separately provided on the plug. However, in fact, many charging guns do not have bosses, resulting in limited adaptability and a small scope of application;

[0006] 2. The socket cover plate is generally made of plastic. When the plastic socket cover plate is charging and is subjected to the disconnection external force of the charging gun for a long time, it is easy to be damaged.

[0007] 3. When the barb of the socket cover plate disengages from the boss of the socket, the friction between the two is relatively large, and there may also be a situation where the barb fails to disengage from the boss, resulting in the plug being unable to be normally disconnected. When the vehicle drives away later, the socket cover plate is pulled off and damaged;

[0008] 4. When the barb of the socket cover plate disengages from the boss of the socket, the friction between the two is relatively large. After a long time, there will be more wear at the connection between the hook and the boss, resulting in the plug and the socket not being plugged in tightly enough, affecting the stability of charging. Summary of the Invention

[0009] The purpose of the present invention is to provide a self - disconnecting socket and a charging device. By using this structure, the stability and smoothness of self - disconnection are improved, and the scope of application is also increased.

[0010] To achieve the above - mentioned purpose, the technical solution adopted by the present invention is: A self - disconnecting socket, comprising:

[0011] Socket body, in which there is a socket body for plugging and matching with a plug;

[0012] Plug ejecting mechanism, which is arranged in the socket body. The plug ejecting mechanism includes a push rod and a push rod driving part. The push rod driving part has a self - reset force to push the push rod from the plugging position to the disengaging position;

[0013] Push rod limiting part, which is installed in the socket body. The push rod limiting part includes a limiting piece movably arranged on the socket body and a limiting piece driving part for driving the inner end of the limiting piece to approach or move away from the push rod;

[0014] A matching component for cooperating with the inner end of the limiting piece is arranged on the push rod. When the push rod is in the plugging position, the limiting piece driving part can drive the inner end of the limiting piece to approach the push rod and cooperate with the matching component, and limit the forward movement of the push rod;

[0015] When the limiting piece driving part drives the inner end of the limiting piece to move away from the push rod and separate from the matching component, the push rod driving part pushes the push rod forward to the disengaging position.

[0016] In the above - mentioned technical solution, the limiting piece driving part includes an electromagnet and a limiting piece pushing part. The electromagnet gives a pulling force to the limiting piece to move away from the push rod, and the limiting piece pushing part gives a pushing force to the limiting piece to move towards the push rod.

[0017] In the above - mentioned technical solution, the limiting piece is arranged beside the push rod, between the electromagnet and the push rod. The electromagnet is connected to the outer end of the limiting piece through an intermediate transmission component.

[0018] In the above - mentioned technical solution, the intermediate transmission component includes a lever and a transmission connecting rod. The middle part of the lever is rotatably connected to the socket body. A push groove is arranged at the outer end of the limiting piece. The first end of the lever is inserted into the push groove. One end of the transmission connecting rod is connected to the working end of the electromagnet, and the other end of the transmission connecting rod faces the second end of the lever or abuts against the side wall of the second end of the lever.

[0019] In the above - mentioned technical solution, the end face of the transmission connecting rod facing one end of the lever is an inclined plane, and the inclined plane is inclined from front to back towards the push rod direction.

[0020] In the above - mentioned technical solution, the middle part of the lever is rotatably connected to the socket body through a rotating shaft. The first end and the second end of the lever are respectively arranged on both sides of the rotating shaft;

[0021] When the electromagnet works, it drives the working end of the electromagnet and the transmission link to move forward, and pushes the lever to rotate in the first direction through the transmission link, so that the first end of the lever drives the limiting member to separate from the mating member.

[0022] In the above technical solution, an installation cavity communicating with the front end face of the socket body is provided in the socket body, and the ejector rod and the ejector rod pushing part are arranged in the installation cavity;

[0023] The ejector rod pushing part is a first compression spring, the first compression spring is sleeved on the outer surface of the ejector rod, a first annular protrusion is arranged on the outer surface of the ejector rod on the front side of the mating member, the rear end of the first compression spring abuts against the middle or rear end face of the installation cavity, and the front end of the first compression spring abuts against the rear end face of the first annular protrusion, and the first compression spring gives the first annular protrusion a self-resetting force to move forward.

[0024] In the above technical solution, the limiting member pushing part is a second compression spring, and the second compression spring gives the limiting member a thrust force towards the ejector rod.

[0025] In the above technical solution, the mating member is a limiting groove or a limiting ring, and the limiting groove or the limiting ring is arranged on the outer surface of the ejector rod;

[0026] And / or, the end face of the limiting member facing the ejector rod is a guiding inclined surface, and the guiding inclined surface is inclined from front to back towards the ejector rod.

[0027] The present invention also provides a charging device, including the above self-disengaging socket, and further including a plug, and the plug is inserted and matched with the socket body;

[0028] And / or, the outside of the plug is provided with a rubber coating.

[0029] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0030] 1. In the present invention, the ejector rod is limited by setting the ejector rod limiting part. After the vehicle starts, the electromagnet will be energized, thereby releasing the limit on the ejector rod, and then using the ejector rod to eject the plug, realizing automatic disengagement control. Compared with the previous method of using a socket cover plate to limit the charging gun (plug) and the ejector rod, by directly limiting the ejector rod in the socket body through the ejector rod limiting part, there is no need to limit the charging gun, which can improve the adaptability of the socket body to different plugs, expand the applicable range, and at the same time can prevent the problem of damage to the socket cover plate and reduce the maintenance rate;

[0031] 2. When the plug is inserted into the socket body in the present invention, the ejector rod can be pushed to move backward, and the limiting member can be automatically inserted into the ejector rod through the pushing part of the limiting member to limit the ejector rod. When the plug is inserted into the socket body, there is no need to hook the socket cover on the plug, which improves the convenience of the charging operation and the user experience;

[0032] 3. In the present invention, even if the ejector rod fails to successfully eject the plug, when the vehicle drives away, the plug can be separated from the socket through the movement of the socket, and the socket cover will not be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the self - disengaging control socket in Embodiment 1 of the present invention;

[0034] Figure 2 is Figure 1 an exploded view of;

[0035] Figure 3 is a schematic cross - sectional structural diagram of the charging device in Embodiment 1 of the present invention (when the plug is inserted into the socket body, the ejector rod is in the inserted position);

[0036] Figure 4 is a schematic cross - sectional structural diagram of the charging device in Embodiment 1 of the present invention (when the ejector rod is in the disengaged position and ejects the plug out of the socket body);

[0037] Figure 5 is Figure 3 a partial enlarged view of the connection between the plug ejecting mechanism and the ejector rod limiting part in;

[0038] Wherein: 1. Socket body; 2. Plug; 3. Socket body; 4. Ejector rod; 5. Ejector rod pushing part; 6. Limiting member; 7. Matching part; 8. Plug rod; 9. Electromagnet; 10. Limiting member pushing part; 11. Lever; 12. Transmission connecting rod; 13. Pushing groove; 14. Rotating shaft; 15. Inclined plane; 16. Installation cavity; 17. First annular protrusion; 18. Guiding inclined plane; 19. Rear cover; 20. Cover plate; 21. Display screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The present invention will be further described below with reference to the drawings and embodiments:

[0040] Embodiment 1: Refer to Figures 1-5 As shown, a self - disengaging control socket includes:

[0041] A socket body 1, and a socket body 3 for plugging and mating with a plug 2 is provided inside the socket body 1;

[0042] The plug ejecting mechanism is arranged in the socket body 3. The plug ejecting mechanism includes a push rod 4 and a push rod driving part 5. The push rod driving part 5 has a self-resetting force for pushing the push rod 4 from the inserted position to the disengaged position.

[0043] The push rod limiting part is installed in the socket main body 1. The push rod limiting part includes a limiting member 6 movably arranged on the socket main body 1 and a limiting member driving part for driving the inner end of the limiting member 6 to approach or move away from the push rod 4.

[0044] A cooperating part 7 is provided on the push rod 4 for cooperating with the inner end of the limiting member 6. When the push rod 4 is in the inserted position, the limiting member driving part can drive the inner end of the limiting member 6 to approach the push rod 4 and cooperate with the cooperating part 7, and limit the forward movement of the push rod 4.

[0045] When the limiting member driving part drives the inner end of the limiting member 6 to move away from the push rod 4 and separate from the cooperating part 7, the push rod driving part 5 pushes the push rod 4 forward to the disengaged position.

[0046] In this embodiment, the plug 2 has a plug rod 8 that cooperates with the push rod. The front end of the socket body communicates with the front end face of the socket main body. The plug is inserted into the socket body from the front end of the socket main body (the socket body is provided with a terminal block) to achieve electrical connection, so that the vehicle can be charged through the plug and the socket body (it can also be other devices that require a charging gun or others, such as an electric vehicle). When the plug and the socket are not in the inserted state, the self-resetting force of the push rod driving part pushes the push rod forward, so that the push rod is in the disengaged position. When the plug and the socket body are inserted, the plug rod abuts against the push rod and pushes the push rod backward. After the plug and the socket are inserted, the limiting member driving part drives the inner end of the limiting member to approach the push rod and cooperate with the cooperating part to limit the forward movement of the push rod, that is, the self-resetting force of the push rod driving member is limited by the limiting member. At this time, the plug and the socket can be stably mated. When it is necessary to separate the plug and the socket, the limiting member driving part drives the limiting member away from the push rod, so that the limiting member and the cooperating part are separated. At this time, the limiting force of the limiting member on the push rod disappears, and the self-resetting force of the push rod driving part pushes the push rod forward, so that the push rod moves from the inserted position to the disengaged position. In this process, the push rod can push the plug rod forward and simultaneously drive the plug forward to disengage from the socket body, thereby realizing the automatic disengagement of the plug from the socket body and realizing the self-disconnection control action.

[0047] Among them, the limiting member driving part includes an electromagnet 9 and a limiting member pushing part 10. The electromagnet 9 gives a pulling force to the limiting member 6 to move away from the push rod 4, and the limiting member 6 pushing part gives a pushing force to the limiting member 6 to move towards the push rod 4.

[0048] In this embodiment, taking the socket body installed on a vehicle as an example, the electromagnet is connected to the vehicle's power supply system. When the vehicle stops for charging, the power supply system disconnects the electrical connection with the electromagnet (at this time, the electromagnet does not work, and when the electromagnet does not work, it does not apply a pulling force to the limiting member away from the ejector rod). When the vehicle starts, the power supply system supplies power to the electromagnet (at this time, the electromagnet works, and when the electromagnet works, it applies a pulling force to the limiting member away from the ejector rod). Therefore, during charging, since the electromagnet does not work, the limiting member pushing portion pushes the limiting member towards the ejector rod and cooperates with the mating component to prevent the ejector rod from moving forward and ejecting the plug head. After the vehicle starts and the power supply system supplies power to the electromagnet (in the case of forgetting to manually pull out the plug from the socket body, or when it is known in advance that the plug has not been pulled out and the vehicle is started), the electromagnet is powered, and the electromagnet applies a pulling force to the limiting member away from the ejector rod, overcoming the pushing force of the limiting member pushing portion, driving the limiting member away from the ejector rod and separating from the mating component. At this time, the self - resetting force of the ejector rod driving portion will push the ejector rod forward and push the plug forward to separate from the socket body, realizing the automatic separation of the plug and the socket. In this way, when the user knows that the plug has not been pulled out from the socket, there is no need to apply an external force manually to pull out the plug, which can improve the operation convenience and user experience of the user (in the most conventional way, it is necessary to manually pull out the plug, which is not convenient). At the same time, in the case where the user forgets to pull out the plug, as long as the vehicle starts, the plug will be ejected from the socket body, which can also reduce the risk of damage to the plug and socket and reduce potential safety hazards.

[0049] See Figures 3-5 As shown, the limiting member 6 is arranged beside the ejector rod 4, the limiting member 6 is arranged between the electromagnet 9 and the ejector rod 4, and the electromagnet 9 is connected to the outer end of the limiting member 6 through an intermediate transmission member.

[0050] In this embodiment, the limiting member is arranged perpendicular to the axis of the ejector rod. A sliding groove cooperating with the limiting member is provided in the socket body, and the limiting member slides in this sliding groove to limit the movement of the limiting member. The limiting member is arranged above, below, to the left, to the right of the ejector rod or outside the circumferential direction of the ejector rod. Preferably, in this embodiment, the limiting member is arranged above the ejector rod, the limiting member can move up and down in the socket body, and the electromagnet is located above the limiting member.

[0051] See Figures 3-5As shown, the intermediate transmission component includes a lever 11 and a transmission link 12. The middle part of the lever 11 is rotatably connected to the socket body 1. A push groove 13 is provided at the outer end of the limiting member 6. The first end of the lever 11 is inserted into the push groove 13. One end of the transmission link 12 is connected to the working end of the electromagnet 9, and the other end of the transmission link 12 faces the second end of the lever 11 or abuts against the side wall of the second end of the lever 11. In this embodiment, the top of the transmission link is connected to the working end at the rear of the electromagnet, and the bottom of the transmission link abuts against the top surface of the second end of the lever. In this way, the electromagnet is arranged parallel to the ejector rod, and it can also reduce the occupation of the width space of the socket body, making the whole socket look smaller.

[0052] The middle part of the lever 11 is rotatably connected to the socket body 1 through a rotating shaft 14. The first end and the second end of the lever 11 are respectively arranged on both sides of the rotating shaft 14. In this embodiment, the first end is at the front side of the rotating shaft, and the second end is at the rear side of the rotating shaft.

[0053] When the electromagnet works, it drives the working end of the electromagnet and the transmission link to move forward, and pushes the lever to rotate in the first direction through the transmission link (the lever is always inclined from front to back towards the ejector rod direction. In this embodiment, the lever is always inclined from right front to back downward). The first end of the lever drives the limiting member to separate from the matching component. When the electromagnet does not work, the pushing part of the limiting member will push the limiting member to move downward and close to the ejector rod. At this time, when the limiting member moves downward, the push groove also moves downward, and the push groove will drive the lever to rotate in the second direction. At the same time, since the electromagnet is not powered on, the lever will also give a thrust to the transmission link and drive the transmission link and the working end of the electromagnet to move backward. Among them, the first direction and the second direction are opposite.

[0054] The end face of the transmission link 12 facing one end of the lever 11 is an inclined surface 15, and the inclined surface 15 is inclined from front to back towards the ejector rod 4. In this embodiment, the bottom surface of the lever is an inclined surface, and the working end of the electromagnet is the electromagnet ejector rod. When the electromagnet works, the electromagnet moves forward and drives the transmission link forward. The inclined surface is inclined downward from front to back. In this embodiment, the first direction is the clockwise direction, the second direction is the counterclockwise direction, the rotating shaft is arranged at the rear side of the limiting member, and the rotating shaft is at the rear side of the through groove. When the electromagnet works, it drives the transmission link forward. The inclined surface of the transmission link pushes the lever to rotate clockwise. The front end of the lever will face upward, and then the top of the lever abuts against the top of the push groove and pushes the limiting member upward to separate from the mating member. Then, the ejector rod driving part pushes the ejector rod forward to eject the plug. When parking and preparing to charge, the electromagnet is powered off. The limiting member driving part pushes the limiting member downward. The top of the push groove moves downward and drives the lever to rotate counterclockwise. The rear end of the lever moves upward. Through the inclined surface, it drives the transmission link and the electromagnet working part to move backward (the front end of the inclined surface is at a high position and the rear end is at a low position, so the rotation of the lever can push the transmission link backward). At this time, the bottom of the limiting member abuts against the outer surface of the top of the ejector rod (the mating member is at the front side of the limiting member at this time, and the mating member and the inner end of the limiting member are not in a mating state). During the process of inserting the plug into the socket body, it will push the ejector rod and the mating member backward. Until the mating member faces the limiting member, the limiting member will cooperate with the mating member, so as to limit the forward movement of the ejector rod through the limiting member to eject the plug. When it is necessary to eject the plug, the electromagnet is powered on and works, driving the limiting member to move upward and separate from the mating member. The ejector rod driving part can then push the ejector rod forward and push the plug forward to automatically disengage from the socket body. Of course, a sensor or other detection component can also be arranged at the rear end of the ejector rod. After the plug and the socket body are plugged in, when the ejector rod moves backward to a predetermined position and the mating member faces the limiting member, this sensor or other detection component detects that the ejector rod has moved backward in place. At this time, the electromagnet is powered off again (without powering off the electromagnet in advance). The limiting member driving part pushes the limiting member downward to cooperate with the mating member to limit the forward movement of the ejector rod.

[0055] See Figures 3-5 As shown, an installation cavity 16 communicating with the front end face of the socket body 3 is provided in the socket body 3, and the ejector rod 4 and the ejector rod driving part 5 are arranged in the installation cavity 16;

[0056] The ejector rod driving part 5 is a first compression spring. The first compression spring is sleeved on the outer surface of the ejector rod 4. A first annular protrusion 17 is provided on the outer surface of the ejector rod 4 on the front side of the mating member 7. The rear end of the first compression spring abuts against the middle or rear end face of the installation cavity 16, and the front end of the first compression spring abuts against the rear end face of the first annular protrusion 17. The first compression spring gives the first annular protrusion 17 a self-resetting force to move forward.

[0057] Preferably, the installation cavity is a stepped hole, including a front hole and a rear hole arranged coaxially. The diameter of the front hole is smaller than that of the rear hole, and the diameter of the front hole is smaller than that of the first annular protrusion. The diameter of the front hole matches or is slightly larger than the diameter of the ejector rod. The diameter of the rear hole matches or is slightly larger than the diameter of the first annular protrusion. The first annular protrusion is located in the rear hole. In this way, when the first compression spring pushes the first annular protrusion to move forward, when the first annular protrusion moves to the front end of the rear hole, it will be limited, so as to limit the forward movement distance of the ejector rod. When the plug and the socket body are plugged, it will push the ejector rod and the first annular protrusion to move backward and further compress the first compression spring. When the rear end of the ejector rod abuts against the rear wall of the rear hole, or after the plug and the socket are plugged in place, the matching component will just face the limiting component, so that the forward movement of the ejector rod can be limited by the limiting component. After the electromagnet is powered on, the limiting component moves upward and separates from the matching component. In this embodiment, the first compression spring is always in a compressed state. Therefore, the self-resetting force of the first compression spring will push the ejector rod forward, push the plug rod and the plug forward and separate from the socket body. Among them, the rear end of the first compression spring is arranged on the front side of the limiting component, so as not to affect the cooperation between the limiting component and the matching component, and the first compression spring does not affect the normal movement of the limiting component.

[0058] Of course, the first annular protrusion may not be provided. The rear end of the first compression spring is directly fixedly connected to the inner surface of the middle part of the installation cavity, and the front end of the first compression spring is directly fixedly connected to the outer surface of the ejector rod. The first compression spring is always in a compressed state, so that the first compression spring can also give the ejector rod a forward self-resetting force.

[0059] See Figures 3-5 As shown, the limiting component pushing part 5 is a second compression spring, and the second compression spring gives the limiting component 6 a thrust force towards the ejector rod 4. In this embodiment, the second compression spring is sleeved on the outer surface of the limiting component. The outer end (top) of the second compression spring is connected to the socket body or abuts against the socket body. The inner end (bottom) of the second compression spring is fixedly connected to the outer surface of the limiting component, or there is a protrusion or a groove on the outer surface of the limiting component. The inner end of the second compression spring abuts against the protrusion or is located in the groove, so as to ensure that the second compression spring always gives the limiting component a thrust force towards the ejector rod.

[0060] See Figure 5 As shown, the end face of the limiting component 6 facing the ejector rod 4 is a guiding inclined surface 18, and the guiding inclined surface 18 is inclined from front to back towards the ejector rod 4; in this embodiment, the guiding inclined surface is inclined downward from right to front.

[0061] The matching component 7 is a limiting groove or a limiting ring, and the limiting groove or the limiting ring is arranged on the outer surface of the ejector rod 4.

[0062] In this embodiment, the cooperating component is a limiting groove. When the ejector rod is in the inserted position, the inner end (bottom) of the limiting member is inserted into the limiting groove, and the rear end face of the limiting member abuts against the rear side wall of the limiting groove, so as to be able to limit the first compression spring from pushing the ejector rod forward. Among them, the limiting groove adopts an annular groove structure. Even if the ejector rod rotates, the limiting member will stably insert into the limiting groove. If the cooperating component is a limiting ring, when the cooperating component and the limiting ring cooperate, the bottom of the limiting member is located on the front side of the limiting ring, and the rear side wall of the limiting member contacts the front side wall of the limiting ring to prevent the ejector rod from moving forward. Due to the existence of the guiding inclined surface, when the vehicle is ready to charge and the electromagnet is in the power-off state, since the ejector rod has moved forward, at this time the limiting ring is located on the front side of the limiting member, and the bottom of the limiting member abuts against the outer surface of the top of the ejector rod. When the plug and the socket body are inserted, the ejector rod will be pushed backward. At this time, the limiting ring also moves backward, and the rear side surface of the limiting ring will first contact the guiding inclined surface. And when the limiting ring continues to move backward, by squeezing the guiding inclined surface, the limiting member is pushed upward by a certain amount until the limiting ring completely passes the bottom of the limiting member. Then, the thrust of the second compression spring will push the limiting member downward and be located on the front side of the limiting ring to realize the limitation of the ejector rod.

[0063] See Figure 2 As shown, a rear cover 19 is further installed on the back of the socket main body 1. The socket body 3, the ejecting mechanism for the plug and the ejector rod limiting part are arranged between the socket main body 3 and the rear cover 19. The rear cover is used to shield and seal the components inside the socket main body, and a sealing gasket is also provided between the socket main body and the rear cover to play a waterproof role.

[0064] Among them, a cover plate 20 is provided on the front side of the socket main body 1. Preferably, the top of the cover plate is rotatably connected to the front side wall of the socket main body, and a torsion spring is used at the rotating connection, so that the bottom of the cover plate rotates downward to shield the socket body (the front end of the socket body is the charging port). A display screen 21 can also be provided on the front side wall of the socket main body for displaying charging information.

[0065] The present invention also provides a charging device, including the self-disengaging and controlling socket described above, and further including a plug, and the plug 2 is in plug-in fit with the socket body;

[0066] An encapsulation layer is provided outside the plug. The encapsulation layer is integrally injection-molded with the outer shell of the plug, with better quality and better feel.

[0067] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0068] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For example, the two form a mechanical abutment or contact connection method through abutment, contact, etc. The two can also be directly hung or hung and connected through an intermediate medium, etc. It can also be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A self - disconnecting socket, characterized in that: Comprising: A socket body, within which there is a socket body for plugging and mating with a plug; A plug ejecting mechanism, which is arranged within the socket body. The plug ejecting mechanism includes a push rod and a push rod driving part, and the push rod driving part has a self - reset force for pushing the push rod from the plugging position to the disengaging position; A push rod limiting part, which is installed within the socket body. The push rod limiting part includes a limiting member movably arranged on the socket body and a limiting member driving part for driving the inner end of the limiting member to approach or move away from the push rod; A mating part for cooperating with the inner end of the limiting member is arranged on the push rod. When the push rod is in the plugging position, the limiting member driving part can drive the inner end of the limiting member to approach the push rod and cooperate with the mating part, and limit the forward movement of the push rod; When the limiting member driving part drives the inner end of the limiting member to move away from the push rod and separate from the mating part, the push rod driving part pushes the push rod forward to the disengaging position.

2. The self-disengaging socket according to claim 1, wherein: The limiting member driving part includes an electromagnet and a limiting member pushing part. The electromagnet gives a pulling force to the limiting member to move away from the push rod, and the limiting member pushing part gives a pushing force to the limiting member to move towards the push rod.

3. The self-disengaging socket according to claim 2, wherein: The limiting member is arranged beside the push rod, between the electromagnet and the push rod, and the electromagnet is connected to the outer end of the limiting member through an intermediate transmission member.

4. The self-disengaging socket according to claim 3, characterized in that: The intermediate transmission member includes a lever and a transmission link. The middle of the lever is rotatably connected to the socket body. A push groove is arranged at the outer end of the limiting member, the first end of the lever is inserted into the push groove, one end of the transmission link is connected to the working end of the electromagnet, and the other end of the transmission link faces or abuts against the side wall of the second end of the lever.

5. The self-disengaging socket according to claim 4, wherein: The end face of the transmission link facing one end of the lever is an inclined plane, and the inclined plane is inclined from front to back towards the push rod direction.

6. The self-disengaging socket according to claim 4 or 5, characterized in that: The middle of the lever is rotatably connected to the socket body through a rotating shaft, and the first end and the second end of the lever are respectively arranged on both sides of the rotating shaft; When the electromagnet works, it drives the working end of the electromagnet and the transmission link to move forward, and through the transmission link, it pushes the lever to rotate in the first direction, so that the first end of the lever drives the limiting member to separate from the mating part.

7. The self-disengaging socket according to claim 1, wherein: An installation cavity communicating with the front end face of the socket body is arranged within the socket body, and the push rod and the push rod driving part are arranged within the installation cavity; The push rod driving part is a first compression spring, which is sleeved on the outer surface of the push rod. A first annular protrusion is arranged on the outer surface of the push rod in front of the mating part. The rear end of the first compression spring abuts against the middle or the rear end face of the installation cavity, and the front end of the first compression spring abuts against the rear end face of the first annular protrusion. The first compression spring gives a self - reset force for the first annular protrusion to move forward.

8. The self-disengaging socket according to claim 2, wherein: The limiting member pushing part is a second compression spring, and the second compression spring gives a pushing force for the limiting member to move towards the push rod.

9. The self-disengaging socket according to claim 2, wherein: The mating part is a limiting groove or a limiting ring, and the limiting groove or the limiting ring is arranged on the outer surface of the push rod; And / or, the end face of the limiting member facing the ejector rod is a guiding inclined surface, and the guiding inclined surface is inclined from front to back towards the ejector rod.

10. A charging device, characterized in that: Comprising the self-release socket according to any one of claims 1-9, further comprising a plug, and the plug is inserted and cooperated with the socket body; And / or, the outer part of the plug is provided with a rubber coating layer.

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