CN115224530A - Socket and electric connection assembly - Google Patents

Abstract

The invention discloses a socket, which at least includes an insulating shell and a closed arc extinguishing chamber, the closed arc extinguishing chamber at least includes an insulating shell, a moving contact and a static contact, and the insulating shell is provided with at least one set of sockets , each group of jacks includes at least two jacks, and a corresponding conductor is arranged below the jacks, the conductors are connected with the conductors on the closed arc extinguishing chamber, and the insulating shell is also provided with a Through hole, the closed arc extinguishing chamber is located in the insulating shell, and part or all of it extends into the through hole, and an electrical connection assembly with the socket is also disclosed. Before the plug is pulled out, the closed arc extinguishing chamber is first Power off the plug to ensure that the plug and socket are not burnt.

Description

A socket and electrical connection assembly

technical field

The invention relates to the field of low-voltage electrical appliances, in particular to a DC socket and an electrical connection assembly applied in the low-voltage DC field.

Background technique

With the development of the economy and the improvement of environmental protection awareness, in recent years, the state has continuously increased its investment in photovoltaic, wind energy and other clean energy fields. Therefore, in the near future, the DC power distribution system will be applied in more and more actual production operation scenarios.

As we all know, the waveform of alternating current is a sinusoidal waveform, and it will pass through the zero point every time it passes through a cycle. For our household sockets, normal plugging and unplugging will not produce large arcs. Even if the load is large, an arc is generated when the plug is inserted and pulled out, and the circuit will automatically extinguish the arc at the zero-crossing point. But direct current is different, it has no zero point, so the whole circuit cannot extinguish the arc at the zero crossing like alternating current. As a result, in the actual production process, the DC power distribution system has the problems that the arc is difficult to extinguish and the arc burns the pins to affect the life of the socket plug.

SUMMARY OF THE INVENTION

Based on the above background, the purpose of the present invention is to provide a DC socket and an electrical connection assembly, which can effectively overcome the above problems.

The present invention is achieved through the following technical solutions:

A socket includes at least an insulating shell and a closed arc extinguishing chamber, the closed arc extinguishing chamber at least includes an insulating shell, a moving contact, and a static contact, and the insulating shell is provided with at least one set of sockets, each set of The jack includes at least two jacks, a corresponding conductor is arranged below the jack, the conductor is connected to the conductor on the closed arc extinguishing chamber, and a through hole is also arranged on the insulating shell, It is located in the insulating shell and partially or completely extends into the through hole.

Preferably, each set of sockets corresponds to one of the closed arc extinguishing chambers.

Preferably, the insulating casing includes a first casing and a second casing inside the first casing, and the hardness of the second casing is smaller than that of the second casing.

Preferably, the material of the second casing is an elastic insulating material.

Preferably, the closed arc extinguishing chamber further comprises a driving rod for driving the movable contact.

Preferably, the closed arc extinguishing chamber further comprises a first elastic member located between the driving rod and the movable contact, and the driving rod is arranged on the second housing and the first elastic member between.

Preferably, the driving rod includes a first rod and a second rod, and pressing the first rod can drive the second rod to move along its axial direction.

Preferably, the contact ends of the first rod and the second rod both have tooth-like structures, and pressing the first rod can drive the second rod to rotate and move along its axial direction.

Preferably, a switch device is provided on the closed arc extinguishing chamber, and pressing the switch can drive the closed arc extinguishing chamber to turn on or off.

Preferably, the socket further includes an operating mechanism, and the operating mechanism at least includes a movable rod rotatably connected to the insulating housing through a rotating shaft.

Preferably, the socket and the plug are connected or disconnected, and the plug is provided with conductive pins. When the conductive pins are inserted into the jacks, the conductive pins drive the movable rod to rotate and one end of the conductive pins is pressed against the seat. the edge of the switchgear.

Preferably, the operating mechanism further includes an elastic member, the elastic member is sleeved on the rotating shaft, one end is abutted on the insulating casing, and the other end is abutted on the movable rod.

Preferably, the movable rod includes a first end close to the insertion hole and a second end close to the closed arc extinguishing chamber, and the first end partially extends into the insertion hole.

Preferably, the switch device includes a button outside the insulating housing and a drive rod inside the insulating housing.

Preferably, the insulating casing comprises a first casing and a second casing located in the first casing, the hardness of the second casing is smaller than that of the first casing, the switch device or the driving rod in the second housing.

Preferably, the electrical conductor is any one of a chuck, a circlip, a copper sheet, and a wire.

Preferably, the closed arc extinguishing chamber is in a vacuum state or filled with any one of hydrogen, nitrogen and sulfur hexafluoride gas.

Preferably, the sockets are arranged vertically or obliquely.

Preferably, the socket is rectangular or circular or a combination of rectangular and circular shapes.

Preferably, the socket is composed of one set of sockets or at least two sets of sockets.

Preferably, the socket is further provided with a USB socket and/or a PD fast charging socket.

Preferably, each group of jacks is correspondingly provided with a status indicator light.

Preferably, the closed arc extinguishing chamber is turned on after the plug is inserted, and the breaking time of the closed arc extinguishing chamber is earlier than the non-contact breaking time between the pins of the plug and the conductor.

Preferably, each set of jacks includes three jacks.

Preferably, the three jacks are arranged in a "pin" shape, and the conductors in the jacks located in the upper middle are grounded; the conductors in the two jacks located at the bottom are respectively connected to the negative electrode and the positive electrode. .

Preferably, each set of jacks includes five jacks.

Preferably, the five jacks are arranged in the top three and the bottom two, wherein the conductors corresponding to the upper left and the lower left are positive electrodes, the conductors corresponding to the upper middle and upper right are grounding, and the conductors corresponding to the lower right are grounded. Or the conductors corresponding to the upper left and the upper middle are grounding, the conductors corresponding to the upper right and lower right are the negative electrodes, and the conductors corresponding to the lower left are the positive electrodes.

Preferably, the five jacks are arranged in two upper, middle and lower, two and three rows, wherein the conductors corresponding to the upper left and the lower left are positive electrodes, the conductors corresponding to the middle, middle and upper right are grounding, and the conductors corresponding to the lower right are negative electrodes; Alternatively, the conductors corresponding to the upper left and middle middle are grounding, the conductors corresponding to the upper right and lower right are negative electrodes, and the conductors corresponding to the lower left are positive electrodes.

On the other hand, the present invention also discloses an electrical connection assembly, comprising a plug and the socket according to any one of claims 1-28, wherein a plug is provided on the plug at a position corresponding to the through hole of the socket. The driving part, when the plug and the socket are pulled out and inserted, realizes the power connection or disconnection of the plug and the socket through the cooperation between the driving part and the closed arc extinguishing chamber in the through hole.

Preferably, the driving part is a boss on the plug.

Preferably, the socket is provided with three groups of jacks.

Preferably, each set of jacks has three holes, and the plug has three pins.

Preferably, the three pins of the plug include two conductive pins and one non-conductive pin.

Preferably, each set of jacks has five holes, and the plug has three pins, two pins, or four pins.

Preferably, the four pins of the plug include two conductive pins and two non-conductive pins.

Preferably, the plug is provided with a locking structure, and the socket is provided with a corresponding matching structure.

Preferably, the locking structure includes a hook and an elastic element for driving the hook to return.

Preferably, the socket is turned on after the plug is inserted, and the breaking time of the closed arc extinguishing chamber is earlier than the non-contact breaking time of the pin and the conductor.

The beneficial effects of the present invention are as follows:

1. The space is maximized, the socket is designed as a rectangle, the long sides are parallel to each other, and the distribution is in the shape of "pin". The closed arc interrupter is arranged in the middle, and the space is rationally utilized, the overall size is reduced, and the cost is reduced.

2. The socket is equipped with a closed arc extinguishing chamber, which can reliably disconnect the DC current and ensure the safe operation of the user's electrical equipment.

3. The socket is provided with a closed arc extinguishing chamber, and the matching plug is provided with a boss or an operating mechanism, which is convenient for operation, and ensures that the closed arc extinguishing chamber first powers off the plug before the plug is pulled out, so that the plug is closed before the plug is pulled out. The arc extinguishing chamber first powers off the plug to ensure that the plug and socket are not burnt.

4. Five-hole socket, equipped with two-hole, three-hole, four-hole plugs, a variety of matching methods, and can also output different voltages.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings that are used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments described in this application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a front view of a first embodiment of the socket of the present invention.

FIG. 2 is a cross-sectional view of the first embodiment of the socket of the present invention.

FIG. 3 is a schematic diagram of the non-working state of the operating mechanism of the socket according to the first embodiment of the present invention.

FIG. 4 is a schematic diagram of the working state of the operating mechanism of the first embodiment of the socket of the present invention.

FIG. 5 is a front view of a second embodiment of the socket of the present invention.

6 is a cross-sectional view of a closed arc extinguishing chamber of the second embodiment of the socket of the present invention.

7 is a front view of a third embodiment of the socket of the present invention.

8 is a front view of a fourth embodiment of the socket of the present invention.

FIG. 9 is a front view of the first embodiment of the electrical connection assembly of the present invention.

FIG. 10 is a schematic diagram of the non-working state of the operating mechanism of the first embodiment of the electrical connection assembly of the present invention.

FIG. 11 is a schematic diagram of the working state of the operating mechanism of the first embodiment of the electrical connection assembly of the present invention.

FIG. 12 is a front view of the second embodiment of the electrical connection assembly of the present invention.

Figure 13 is a bottom view of the second embodiment of the electrical connection assembly of the present invention ready for insertion. FIG. 14 is a front view of the third embodiment of the electrical connection assembly of the present invention.

Figure 15 is a bottom view of the third embodiment of the electrical connection assembly of the present invention ready for insertion.

Detailed ways

Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the invention. The present invention is in no way limited to any specific configurations and algorithms set forth below, but covers any modification, substitution and improvement of elements, components and algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention.

For the convenience of description, the figures mentioned below are subject to the indicated figure numbers. It should be noted that the orientation or positional relationship indicated above is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of description. The present invention and simplified description do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

The first embodiment of the socket

As shown in FIG. 1 to FIG. 4 , the present embodiment discloses a socket, which includes an insulating casing and a closed arc extinguishing chamber 120 . The insulating casing includes a panel 110 and a bottom plate 190 , and the panel 110 and the bottom plate 190 are welded by ultrasonic waves. For connection, in this embodiment, a group of jacks is arranged on the insulating shell, a group of jacks is located on the panel 110, a group of jacks includes three jacks 112, and the three jacks 112 are arranged in the shape of "pin", each The holes 112 are all rectangular, and the long sides of the jacks are parallel to each other. The panel 110 is also provided with a through hole, the through hole is located between the three pins 112, and the closed arc extinguishing chamber 120 is located in the In the insulating casing, part or all of the through holes are extended. The panel 110 is also provided with an indicator light 130, and each group of jacks corresponds to an indicator light.

As shown in FIG. 2 , in this embodiment, the insulating casing includes a first casing 11 and a second casing 12 located in the first casing 11 , and the hardness of the second casing 12 is smaller than that of the first casing 12 . The shell, that is, the first shell 11 is made of a hard insulating material, such as ceramics, resin, nylon, unsaturated polyester or polyoxymethylene, and the second shell 12 is made of a soft and elastic insulating material, such as resin, nylon , unsaturated polyester, polyoxymethylene or rubber, the second shell adopts soft insulating material, which can effectively increase the sealing performance of the closed arc extinguishing chamber 120 .

Please continue to refer to FIG. 2 , a corresponding conductor 140 is arranged below the jack 112 , and the conductor 140 is connected to the conductor 127 on the closed arc extinguishing chamber 120 , and the closed arc extinguishing chamber 120 is a closed structure. The closed arc extinguishing chamber is evacuated or filled with hydrogen, nitrogen or sulfur hexafluoride gas. The closed arc extinguishing chamber 120 includes a switchgear, an insulating shell, a moving contact assembly, a static contact assembly and an elastic assembly, The switch device includes a button 121 and a driving rod 124 , the movable contact assembly includes a movable contact 122 , the stationary contact assembly includes a stationary contact 123 , and the movable contact 122 is opposite to the stationary contact 123 . set up. A sliding protection block 160 is also disposed in the insertion hole 112 , and the sliding protection block 160 is located at the upper part of the electrical conductor 140 near the opening of the insertion hole.

Please continue to refer to FIGS. 3 and 4 , the socket further includes an operating mechanism 150 , the operating mechanism 150 includes a movable rod 151 , a rotating shaft 152 and an elastic member 153 , and the movable rod 151 is rotatably connected to the insulating housing around the rotating shaft 152 , the elastic member 153 is a torsion spring, which is sleeved on the rotating shaft 152, one end abuts on the protrusion 154 on the insulating housing, and the other end abuts on the movable rod 151 to provide reset for the movable rod force. The button 121 has a main body portion and an extension portion 1211 extending outward from the main body portion. The movable rod 151 includes a first end 1511 that is matched with the side extension portion 1211 of the button 121 and a second end that is matched with the pins of the plug. End 1512, the second end 1512 has a bevel that mates with the pin ends of the plug.

As shown in FIG. 3 , when the operating mechanism 150 is in a non-working state, the second end 1512 of the movable rod 151 is partially located in the insertion hole 112 , and the first end 1511 is away from the button 121 As shown in FIG. 4 , when the operating mechanism 150 is in the working state, the second end 1512 of the movable rod 151 is away from the insertion hole, The first end 1511 presses the extension 1211 of the button 121, so that the elastic component of the closed arc extinguishing chamber is in a compressed state, and the closed arc extinguishing chamber is in an on state.

On the panel 110, there are signs such as "+", "-", "ground", etc., indicating the polarity of the jack. The indicator light turns on when the socket is turned on and turns off when the socket is turned off, and is used to identify the state of the socket.

The second embodiment of the socket

As shown in FIG. 5 to FIG. 6 , this embodiment discloses another form of socket, which is different from the first embodiment in that the panel 110 of the socket is provided with three groups of sockets, a USB socket 170 and a USB socket 170 . PD fast charging interface 180, each set of sockets is provided with an indicator light 130 and a closed arc extinguishing chamber 120, each set of sockets includes three sockets 112, and the closed arc extinguishing chamber 120 of each set is located in its corresponding three between pins 112.

This embodiment also discloses a closed arc extinguishing chamber 120 of another structure. The closed arc extinguishing chamber 120 is a single-contact arc extinguishing chamber, and includes an elastic component, a movable contact 122, a static contact 123, and a first shell. The body 11 , the second housing 12 , the first rod 1241 and the second rod 1242 . The sealed arc extinguishing chamber is filled with hydrogen gas. When the button 121 is pressed, the second rod 1242 drives the first rod 1241 to make the movable contact 122 contact the static contact 123. The arc-extinguishing chamber 120 is connected and self-locked by the second rod 1242 and the first rod 1241; when the button 121 is pressed again, the second rod 1242 and the first rod 1241 are released from self-locking and move upward, driving the movable contact 122 in itself Under the action of elasticity, it leaves the static contact 123, and the closed arc extinguishing chamber is disconnected.

The third embodiment of the socket

As shown in FIG. 7 , the present embodiment discloses another form of socket structure. The difference from the second embodiment is that each set of sockets includes five sockets 112 , and the five sockets 112 are arranged in three upper and two lower Arranged in rows, each socket 112 is rectangular, the long sides of each socket 112 are parallel to each other, the three sockets 112 in the upper row are arranged at equal distances and the upper and lower ends of the three sockets are flush, and the two sockets in the lower row are The spacing between the holes is larger than the spacing between the left and right sockets in the upper row, which plays a foolproof role. The closed arc extinguishing chamber 120 is located between the two rows of sockets 112 in the up and down direction, and is located in the second row of the lower row in the left and right direction. between the jacks.

On the panel 110, there are signs such as "+", "-", "ground", etc., indicating the polarity of the jack. Each of the indicator lights lights up when the sockets of the group are turned on, and goes out when the sockets are turned off, so as to identify the status of the sockets of the group.

The fourth embodiment of the socket

As shown in FIG. 8 , the difference between this embodiment and the third embodiment is that the arrangement of the five jacks 112 of each group of jacks is different. In this embodiment, the five jacks 112 of each group are arranged in the upper two The two are arranged at the bottom. A closed arc extinguishing chamber 120 is provided between the two jacks 112 in the upper row and between the two jacks 112 in the lower row. The middle jack 112 is a grounding hole and is located in two airtight Between the arc extinguishing chambers 120, the distance between the two sockets in the lower row is greater than the distance between the two sockets in the upper row, which plays a foolproof role. The two holes in the upper row and the lower row share the ground. Can be equipped with three jack sockets.

The first embodiment of the electrical connection assembly

As shown in FIG. 9 to FIG. 11 , the present invention also discloses an electrical connection assembly, including a socket 100 and a plug 200 . A drive part is provided on a casing on which the pins 220 are arranged on the plug 200 . When the plug is unplugged from the socket , the power supply of the plug and the socket is connected or disconnected through the cooperation of the drive part with the closed arc extinguishing chamber in the through hole, the drive part is a boss 210, the boss 210 is located between the plurality of pins 220 .

The electrical connection assembly is described in detail below with reference to the insertion or extraction of the plug 200 as follows:

As shown in FIGS. 10 and 11 , when the plug 200 is inserted into the socket 100 , the pins 220 are inserted into the sockets 112 . During the downward movement of the plug 200 , the bosses 210 and the The button 121 contacts and exerts a downward pushing force, the button 121 moves downward under the action of the pushing force, and at the same time, the pin 220 contacts the slope of the second end 1512 during the downward movement and exerts downward force Under the action of the thrust, the second end 1512 rotates around the shaft 152 in a direction away from the insertion hole, so that the first end 1511 of the movable rod 151 abuts against the extension 1211 of the button 121 At the upper end, the second end 1512 abuts on the pin 220. At this time, the moving contact 122 contacts the static contact 123, and the closed arc extinguishing chamber is in the on state, realizing the conduction of the circuit. Pass.

Similarly, when the plug 200 is pulled out from the plug 11, the second end 1512 of the movable rod 151 loses the abutment of the pins 220 during the process of pulling the pins 220 upward, and at the same time Under the action of the restoring force of the elastic member 153 , the movable rod 151 rotates around the rotating shaft 152 in a direction close to the insertion hole 112 , and the first end 1511 is away from the extension 1211 of the button 121 . The pressure of the stage 210 on the button 121 also disappears, the button is reset under the action of the elastic component, the movable contact 122 is separated from the static contact 123, the closed arc extinguishing chamber 120 is quickly disconnected, and the hydrogen and Under the action of the external arc-extinguishing magnet 155, the arc is quickly extinguished and the current is cut off. The pins 220 of the plug 100 continue to be pulled out and separate from the conductors 140 in the socket 100 to realize circuit disconnection.

Second Embodiment of Electrical Connection Assembly

As shown in FIG. 12 to FIG. 13 , in the electrical connection assembly of the present invention, the socket 100 has three groups of jacks, three plugs 200 are inserted into the three groups of jacks, and each group of jacks has three jacks corresponding to The plug 200 has three pins, all of which can be conductive pins, or two are conductive pins, and one is a non-conductive fixed pin. Not easy to fall off.

The electrical connection assembly of the present invention cooperates with the button on the socket 100 by setting the boss 210 on the plug 200, and at the same time, the socket is provided with an operating mechanism for preventing the reset of the button, so that the closed arc-extinguishing chamber first feeds the plug before the plug is pulled out. Turn off the power to ensure that the plug and socket are not burnt.

The third embodiment of the electrical connection assembly

As shown in FIG. 14 to FIG. 15 , in the electrical connection assembly of the present invention, the socket 100 has three groups of jacks, three plugs 200 are inserted into the three groups of jacks, each group of jacks has five jacks, and the plugs 200 has two pins, three pins or four pins, all three pins can be conductive pins or two are conductive pins, one is non-conductive fixed pins, two of the four pins are conductive pins, and two are conductive pins. Fixed pins for non-conductive use.

The electrical connection assembly of the present invention cooperates with the button on the socket by setting the boss on the plug, and at the same time, the socket is provided with an operating mechanism for preventing the reset of the button, so that the closed arc extinguishing chamber first powers off the plug before the plug is pulled out. Make sure that the plug and socket are not burnt.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, various modifications and changes may be made to the embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The present embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and to fall within the meaning and range of equivalents of the claims All modifications of , are therefore included within the scope of the present invention.

Claims (38)

1. A socket, comprising at least an insulating casing, a closed arc extinguishing chamber, the closed arc extinguishing chamber at least comprising an insulating casing, a moving contact, and a static contact, and the insulating casing is provided with at least one set of jacks, Each set of sockets includes at least two sockets, and corresponding conductors are arranged below the sockets, and the conductors are connected to the conductors on the closed arc extinguishing chamber. A through hole is provided, the closed arc extinguishing chamber is located in the insulating shell, and a part or all of it extends into the through hole. 2 . The socket according to claim 1 , wherein each set of sockets corresponds to one of the closed arc extinguishing chambers or two sets of sockets correspond to one closed arc extinguishing chamber. 3 . 3 . The socket of claim 1 , wherein the insulating shell comprises a first shell and a second shell located in the first shell, and the hardness of the second shell is smaller than that of the first shell. 4 . case. 4 . The socket of claim 3 , wherein the material of the second housing is an elastic insulating material. 5 . 5 . The socket according to claim 3 , wherein the closed arc extinguishing chamber further comprises a driving rod for driving the movable contact. 6 . 6 . The socket according to claim 5 , wherein the closed arc extinguishing chamber further comprises a first elastic member located between the driving rod and the movable contact, and the driving rod is provided in the between the second housing and the first elastic member. 7 . The socket of claim 6 , wherein the driving rod comprises a first rod and a second rod, and pressing the first rod can drive the second rod to move along its axial direction. 8 . 8 . The socket according to claim 7 , wherein the contact ends of the first rod and the second rod both have a tooth-like structure, and pressing the first rod can drive the second rod to rotate and along the socket. 9 . Axial movement. 9 . The socket according to claim 1 , wherein a switch device is provided on the closed arc extinguishing chamber, and pressing the switch device can drive the closed arc extinguishing chamber to switch on or off. 10 . 10 . The socket according to claim 1 or 9 , wherein the socket further comprises an operating mechanism, and the operating mechanism at least comprises a movable rod rotatably connected to the insulating housing through a rotating shaft. 11 . 11 . The socket according to claim 10 , wherein the socket is connected to or disconnected from a plug, the plug is provided with conductive pins, and when the conductive pins are inserted into the jacks, the conductive pins The movable rod is driven to rotate, and one end of the movable rod presses the edge of the switch device. 12 . The socket according to claim 10 , wherein the operating mechanism further comprises an elastic member, the elastic member is sleeved on the rotating shaft, one end abuts on the insulating shell, and the other end abuts on the insulating shell. 13 . on the movable rod. 13. The socket of claim 10, wherein the movable rod comprises a first end close to the socket and a second end close to the closed arc chute, the first end extending into the socket. 14. The socket of claim 9, wherein the switch device includes a push button outside the insulating housing and a drive rod inside the insulating housing. 15 . The socket of claim 14 , wherein the insulating housing comprises a first housing and a second housing inside the first housing, and the hardness of the second housing is less than that of the first housing. 16 . A housing, the switch device or the drive lever is located within the second housing. 16 . The socket according to claim 1 , wherein the electrical conductor is any one of a clamp, a circlip, a copper sheet, and a wire. 17 . 17 . The socket according to claim 1 , wherein the closed arc extinguishing chamber is in a vacuum state or filled with any one of hydrogen gas, nitrogen gas and sulfur hexafluoride gas. 18 . 18. The socket according to claim 1, wherein the sockets are arranged vertically or obliquely. 19 . The socket according to claim 1 , wherein the socket is in the shape of a rectangle or a circle or a combination of a rectangle and a circle. 20 . 20. The socket according to claim 1, wherein the socket is composed of one set of sockets or at least two sets of sockets. 21. The socket according to claim 1, wherein the socket is further provided with a USB socket and/or a PD fast charging socket. 22. The socket according to claim 1, wherein each group of sockets is correspondingly provided with a status indicator light. 23 . The socket according to claim 1 , wherein the closed arc extinguishing chamber is turned on after the plug is inserted, and the breaking time of the closed arc extinguishing chamber is earlier than that of the pins of the plug and the conductors. 24 . of no-contact disconnection time. 24. The socket of claim 1, wherein each set of sockets comprises three sockets. 25. The socket according to claim 24, wherein the three sockets are arranged in a "pin" shape, and the conductors in the sockets located in the upper middle are grounded; the two sockets located in the lower part are grounded. The inner conductors are respectively connected to the negative electrode and the positive electrode. 26. The socket of claim 1, wherein each set of jacks includes five jacks. 27 . The socket according to claim 26 , wherein the five jacks are arranged in an upper, three, and two arrangement, wherein the conductors corresponding to the upper right and the lower right are positive electrodes, and the conductors corresponding to the upper middle and upper left are positive electrodes. 28 . The conductor is ground, and the conductor corresponding to the lower left is the negative electrode; or the conductor corresponding to the upper right and the upper middle is the ground, the conductor corresponding to the upper left and the lower left is the negative electrode, and the conductor corresponding to the lower right is the positive electrode. 28 . The socket according to claim 26 , wherein the five jacks are arranged in two upper, middle and lower, two and three rows, wherein the conductors corresponding to the upper right and the lower right are positive electrodes, and the conductors corresponding to the middle middle and upper left are positive electrodes. 29 . The conductor is grounded, and the conductor corresponding to the lower left is the negative electrode; or the conductor corresponding to the upper right and the middle is grounding, the conductor corresponding to the upper left and lower left is the negative electrode, and the conductor corresponding to the lower right is the positive electrode. 29. An electrical connection assembly, characterized in that it comprises a plug and the socket according to any one of claims 1-28, wherein a driving part is provided on the plug at a position corresponding to the through hole of the socket, When the plug and the socket are pulled out and inserted, the power supply of the plug and the socket is connected or disconnected through the cooperation of the driving part with the closed arc extinguishing chamber in the through hole. 30. The electrical connection assembly of claim 29, wherein the driving portion is a boss on the plug. 31. The electrical connection assembly of claim 29, wherein the socket is provided with three sets of sockets. 32. The electrical connection assembly of claim 31, wherein each set of jacks has three holes, and the plug has three pins. 33. The electrical connection assembly of claim 32, wherein the three pins of the plug comprise two conductive pins and one non-conductive pin. 34. The electrical connection assembly of claim 31, wherein each set of jacks has five holes, and the plug has three pins, two pins, or four pins. 35. The electrical connection assembly of claim 34, wherein the four pins of the plug comprise two conductive pins and two non-conductive pins. 36. The electrical connection assembly according to claim 29, wherein the plug is provided with a locking structure, and the socket is provided with a corresponding matching structure. 37. The electrical connection assembly of claim 36, wherein the locking structure comprises a hook and an elastic element for driving the hook to return. 38. The electrical connection assembly according to claim 29, wherein the socket is turned on after the plug is inserted, and the breaking time of the closed arc chute is earlier than the disconnection time between the pin and the conductor. Contact break time.

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