Socket and power connector

Abstract

This disclosure relates to a socket and a power connector, belonging to the field of electrical connection technology. The socket includes a positive terminal assembly, a negative terminal assembly, a ground terminal assembly, a disconnect switch, and an arc-extinguishing device. The positive terminal assembly includes a positive terminal, a positive socket, and a positive connecting piece assembly. The positive connecting piece assembly is connected between the positive terminal and the positive socket and includes a moving contact and a stationary contact. The disconnect switch is used to drive the moving contact and the stationary contact to engage when the ground pin is inserted into the ground socket, and to restore the separation of the moving contact and the stationary contact when the ground pin is pulled out of the ground socket. The arc-extinguishing device is used to activate arc extinguishing when it detects that the moving contact and the stationary contact have switched from engagement to disengagement. Using this disclosure can extend the service life of the socket and improve its safety.

Description

[0001] This disclosure claims priority to Chinese Patent Application No. 202310212107.1, filed on February 28, 2023, entitled "Socket, Switch Assembly, Safety Door Assembly, Electrical Appliance and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of electrical connection technology, and in particular to a socket and power connector. Background Technology

[0003] With economic development and social progress, people are placing increasingly higher demands on energy, and the search for new energy sources has become an urgent issue facing humanity.

[0004] New energy sources, such as solar power, are gradually being used in home and office settings. Since solar cells generate direct current, it is imperative to gradually promote the use of DC plugs and sockets. Summary of the Invention

[0005] This disclosure provides a socket and a power connector, the technical solution of which is as follows:

[0006] On one hand, according to this disclosure, a socket is provided, including a positive terminal wiring assembly, a negative terminal wiring assembly, a ground terminal wiring assembly, a disconnect switch, and an arc extinguishing device;

[0007] The positive terminal assembly includes a positive terminal, a positive socket, and a positive connecting piece assembly. The positive connecting piece assembly is connected between the positive terminal and the positive socket and includes a moving contact and a stationary contact.

[0008] The negative terminal assembly includes a negative terminal, a negative connecting piece, and a negative socket connected in sequence; the ground terminal assembly includes a ground terminal, a ground connecting piece, and a ground socket connected in sequence.

[0009] The disconnect switch is used to drive the moving contact and the stationary contact to engage when the ground electrode pin is inserted into the ground electrode socket, and to restore the separation of the moving contact and the stationary contact when the ground electrode pin is pulled out from the ground electrode socket.

[0010] The arc-extinguishing device is used to activate arc extinguishing when it detects that the moving contact and the stationary contact have switched from being engaged to being disengaged.

[0011] Optionally, the stationary contact is electrically connected to the positive socket, and the moving contact is electrically connected to the positive terminal block; or...

[0012] The stationary contact is electrically connected to the positive terminal, and the moving contact is electrically connected to the positive socket.

[0013] Optionally, the positive electrode connecting piece assembly includes a first connecting piece, a stationary contact piece, a moving contact piece, and a second connecting piece;

[0014] The stationary contact is located on the surface of the stationary contact piece, and the moving contact is located on the surface of the moving contact piece;

[0015] The first connecting piece is connected between the positive electrode socket and the stationary contact piece, and the second connecting piece is connected between the positive electrode terminal and the moving contact piece.

[0016] Optionally, the second connecting piece has a V-shaped support portion;

[0017] The bottom outer surface of the V-shaped support matches the bottom outer surface of the movable contact piece, the bottom of the movable contact piece is supported in the V-shaped support and can swing in the V-shaped support.

[0018] Optionally, the socket may further include a fuse connected between the positive terminal and the positive socket.

[0019] Optionally, the stationary contact is electrically connected to the positive terminal, the moving contact is electrically connected to the positive terminal, and the fuse is connected between the positive terminal and the moving contact.

[0020] Optionally, the stationary contact is electrically connected to the positive terminal block, the moving contact is electrically connected to the positive terminal, and the fuse is connected between the positive terminal block and the stationary contact.

[0021] Optionally, the second connecting piece connecting the positive terminal and the moving contact includes a first segment and a second segment;

[0022] The first segment is connected between one end of the fuse and the moving contact, and the second segment is connected between the other end of the fuse and the positive terminal.

[0023] Optionally, the disconnect switch includes a first moving component and a second moving component having a transmission relationship;

[0024] The first moving component extends into the ground electrode sleeve, and the second moving component is connected to the moving contact piece where the moving contact is located;

[0025] The disconnect switch is used so that when the ground electrode pin inserted into the ground electrode sleeve pushes the first moving member to move, the first moving member drives the second moving member to move, and the second moving member drives the moving contact piece to move, so that the moving contact and the stationary contact are engaged. When the ground electrode pin is pulled out from the ground electrode sleeve and the first moving member resets, the first moving member drives the second moving member to move, and the second moving member drives the moving contact piece to move, so that the moving contact and the stationary contact are separated.

[0026] Optionally, the disconnect switch is located between the positive terminal socket and the negative terminal socket, and the first moving member is located at an end position near the disconnect switch.

[0027] Optionally, the positive terminal and the negative terminal are located on the same side of the disconnect switch, and the ground terminal is located in the length extension direction of the disconnect switch.

[0028] Optionally, the positive terminal screw of the positive terminal, the negative terminal screw of the negative terminal, and the ground terminal screw of the ground terminal are all parallel to the length direction of the positive socket.

[0029] Optionally, the positive terminal, the negative terminal, and the ground terminal are arranged in a stepped manner along the length of the positive socket.

[0030] The ground terminal and the positive terminal are located on opposite sides of the negative terminal.

[0031] Optionally, the disconnect switch, the ground electrode socket, and the ground electrode terminal are arranged in a collinear manner.

[0032] The positive terminal and the arc-extinguishing device are located on one side of the disconnect switch, and the positive terminal, the negative terminal and the negative terminal are located on the other side of the disconnect switch.

[0033] Optionally, the disconnect switch is specifically used to drive the moving contact and the stationary contact to engage when the positive electrode pin is inserted into the positive electrode socket and the ground electrode pin continues to enter the ground electrode socket;

[0034] Before the positive electrode pin disengages from the positive electrode socket, the moving contact and the stationary contact are driven to separate as the ground electrode pin continues to be pulled out of the ground electrode socket.

[0035] Optionally, the arc extinguishing device includes an arc extinguishing circuit board, a controller, and an arc extinguishing switch, wherein the controller and the arc extinguishing switch are both located on the surface of the arc extinguishing circuit board;

[0036] The positive terminal of the power supply of the arc extinguishing circuit board is electrically connected to the positive terminal, and the negative terminal of the power supply is electrically connected to the negative terminal.

[0037] One end of the arc-extinguishing switch is electrically connected to the moving contact, and the other end is electrically connected to the stationary contact;

[0038] The controller is used to control the arc extinguishing switch to close when it detects that the moving contact and the stationary contact have switched from being engaged to being disengaged, and to control the arc extinguishing switch to open when it detects that the closing time of the arc extinguishing switch has reached the target time.

[0039] Optionally, the target duration is greater than or equal to the duration required for the moving contact to separate from the stationary contact to the target distance.

[0040] Optionally, the socket further includes a protective door, the protective door being used for:

[0041] When the ground pin of the plug is not inserted into the ground socket of the socket, the protective door blocks the positive socket, the negative socket and the ground socket;

[0042] When the ground electrode pin is inserted into the ground electrode socket and continues to be inserted through the ground electrode socket, the ground electrode pin pushes the protective door to move, thereby exposing the positive electrode sleeve, the negative electrode sleeve and the ground electrode sleeve;

[0043] When the ground electrode pin is pulled out of the ground electrode socket and disengaged from the protective door, the protective door resets to block the positive electrode socket, the negative electrode socket, and the ground electrode socket.

[0044] Optionally, the socket panel includes a positive terminal, a negative terminal, and a ground terminal arranged in a triangular pattern;

[0045] The ground electrode socket is a circular hole, and the positive electrode socket and the negative electrode socket are both elongated holes with the elongation direction perpendicular to each other;

[0046] A straight line along the width direction of the positive terminal and passing through the center point is the same as a straight line along the length direction of the negative terminal and passing through the center point, and the straight line is arranged vertically with the ground terminal.

[0047] On the other hand, a power connector is provided, the power connector including a plug and the aforementioned socket, the plug and the socket being pluggable and electrically connected.

[0048] In the solution disclosed herein, the socket is inserted into the ground socket by a non-energized ground pin, triggering a disconnect switch and controlling the engagement of the moving and stationary contacts, which can enhance the safety of the plug.

[0049] When the plug is inserted into the socket, the positive pin first enters the positive socket, and then the ground pin continues into the ground socket, triggering the trip switch and controlling the moving and stationary contacts to engage. This method, where the pins first extend into the socket to a certain depth before the moving and stationary contacts engage, prevents users from touching the positive pin and receiving an electric shock, thus enhancing the safety of the socket.

[0050] When the plug is unplugged, the controller of the arc-extinguishing device can detect that the ground pin has just been pulled out. At this point, the moving and stationary contacts are still engaged. They only separate after the plug has been pulled a certain distance, causing the arc-extinguishing switch to close. At this time, the short-circuit circuit containing the arc-extinguishing switch short-circuits the moving and stationary contacts, preventing current from flowing between them. Since there is no significant current flowing between the moving and stationary contacts, the air between them will not break down, thus preventing the generation of an electric spark (arc) due to air breakdown.

[0051] Therefore, this socket can effectively alleviate or even solve the problem of severe arcing at the moment of separation between the moving and stationary contacts, thereby extending the socket's service life and improving its safety.

[0052] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0053] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings:

[0054] Figure 1 This is a schematic diagram of the structure of a power connector according to an embodiment;

[0055] Figure 2 This is an exploded view of a socket according to an embodiment;

[0056] Figure 3 This is a schematic diagram of the structure of a switch assembly for a socket according to an embodiment;

[0057] Figure 4 This is a schematic diagram of a positive terminal wiring assembly, a negative terminal wiring assembly, and a ground terminal wiring assembly according to an embodiment;

[0058] Figure 5 This is a schematic diagram illustrating the structure of a movable contact piece and a V-shaped support portion in cooperation according to an embodiment;

[0059] Figure 6 This is a schematic diagram of the structure of a disconnect switch according to an embodiment;

[0060] Figure 7 This is a schematic diagram illustrating, according to an embodiment, a plug that has just been inserted into a socket, but the pin has not been inserted into the socket sleeve, with the moving contact and the stationary contact in a separated state;

[0061] Figure 8 This is a schematic diagram illustrating, according to an embodiment, a situation where the positive electrode pin has just been inserted into the positive electrode socket, while the moving contact and the stationary contact are still in a separated state;

[0062] Figure 9 This is a schematic diagram illustrating, according to an embodiment, a plug being inserted into and contacting a socket, with the moving contact and the stationary contact in an engaged state;

[0063] Figure 10 This is a schematic diagram of the structure of a switch assembly for a socket according to an embodiment.

[0064] Legend

[0065] 100. Socket; 1001. Positive pin; 1002. Negative pin; 1003. Ground pin.

[0066] 200. Socket.

[0067] 1. Positive terminal assembly; 11. Positive terminal; 12. Positive socket; 13. Positive connector assembly; 111. Positive terminal screw; 121. Terminal post; 131. First connector; 132. Stationary contact; 133. Stationary contact; 134. Moving contact; 135. Moving contact; 136. Second connector; 1361. First section; 1362. Second section; 1363. V-shaped support.

[0068] 2. Negative terminal assembly; 21. Negative terminal; 22. Negative socket; 23. Negative connector.

[0069] 3. Ground electrode wiring assembly; 31. Ground electrode terminal; 32. Ground electrode sleeve; 33. Ground electrode connecting piece.

[0070] 4. Disconnect switch; 41. First moving part; 42. Second moving part.

[0071] 5. Arc extinguishing device; 51. Arc extinguishing circuit board.

[0072] 6. Fuse.

[0073] 7. Safety door.

[0074] 8. Base.

[0075] 9. Fixture.

[0076] 10. Panel; 101. Positive terminal; 102. Negative terminal; 103. Ground terminal.

[0077] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0078] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0079] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0080] This embodiment relates to a power connector, specifically a DC power connector, such as... Figure 1 As shown, the power connector includes a plug 100 and a socket 200, and the plug 100 and socket 200 are electrically connected by plugging and unplugging. The socket 200 can be a wall socket installed on the wall or a portable power strip. For ease of explanation, the accompanying drawings in this embodiment can be illustrated with a wall socket. The structure of a portable power strip is similar and will not be described in detail.

[0081] Based on their output voltage, these sockets can be classified as low-voltage or high-voltage sockets, such as 48V or 400V sockets, specifically a 400V-10A wall socket. For 400V sockets, the voltage is higher. For safety, moving and stationary contacts are arranged on the positive line. Current only flows into the positive line when the moving and stationary contacts are engaged. However, due to the high voltage, the close proximity of the moving and stationary contacts at the moment of separation can cause the air gap between them to break down, resulting in severe arcing. This arcing can burn the moving and stationary contacts and surrounding plastic components, severely affecting the socket's lifespan and even causing a fire. Therefore, for DC sockets, especially high-voltage DC sockets, solving the arcing problem is a crucial technological challenge.

[0082] This embodiment provides a socket that can reduce or even avoid arcing, improve the socket's service life, and enhance its safety. The specific structure of the socket will be described in detail below. Before introducing the socket's structure, the characteristics of DC plugs and DC sockets will be first introduced.

[0083] like Figure 1 As shown, for a three-pole DC plug, the plug 100 includes a positive pin 1001, a negative pin 1002, and a ground pin 1003. The positive pin 1001 and the negative pin 1002 are both rectangular and flat, and their planes are perpendicular to each other. The ground pin 1003 is cylindrical, and its outer surface at the end is spherical. The extension length of the positive pin 1001 is equal to the extension length of the negative pin 1002, and both are less than the extension length of the ground pin 1003. The extension length is the length that extends out of the head of the plug, that is, the exposed length of the pin.

[0084] like Figure 2 As shown, the socket includes a base 8, a switch assembly A, a mounting bracket 9, a protective door 7, and a panel 10. The switch assembly A is assembled in the base 8, which is used to fix it to a socket pre-embedded box installed in the wall. The mounting bracket 9 acts as a cover, fitting over the base 8 and assembling the switch assembly A within the assembly space formed by the mounting bracket 9 and the base 8. The upper surface of the mounting bracket 9 has a protective door mounting space, where the protective door 7 and its accessories (such as a return torsion spring) are assembled. The panel 10 covers the mounting bracket 9 and is fixed to the base 8. The panel 10 is mounted on the outside of the wall, as shown in the image. Figure 2 As shown, the surface of panel 10 has a positive terminal 101, a negative terminal 102, and a ground terminal 103 for inserting the pins of a plug.

[0085] Continue to refer to Figure 1 As shown, the positive terminal 101 matches the positive terminal pin 1001, the negative terminal 102 matches the negative terminal pin 1002, and the ground terminal pin 1003 matches the ground terminal pin 1003. Therefore, both the positive terminal 101 and the negative terminal 102 are elongated holes, and the length directions of the two elongated holes are perpendicular to each other, while the ground terminal 103 is a circular hole.

[0086] Regarding the positional relationship between the positive terminal 101, the negative terminal 102, and the ground terminal 103, as follows: Figure 2 As shown, the positive terminal 101, negative terminal 102 and ground terminal 103 are arranged in a triangle on the panel 10. Moreover, the straight line along the length of the negative terminal 102 and passing through its center point is the same straight line along the width of the positive terminal 101 and passing through its center point. This straight line is arranged vertically with the ground terminal 103.

[0087] The above is a brief overview of the structural features of DC plugs and DC sockets. The following section will detail the structural features of the socket's switching assembly A.

[0088] like Figure 3 As shown, the socket's switch assembly A includes a positive terminal wiring assembly 1, a negative terminal wiring assembly 2, a ground terminal wiring assembly 3, a disconnect switch 4, and an arc-extinguishing device 5.

[0089] like Figure 4 As shown, the positive terminal assembly 1 includes a positive terminal 11, a positive socket 12, and a positive connecting piece assembly 13. The positive connecting piece assembly 13 is connected between the positive terminal 11 and the positive socket 12, and includes a moving contact 135 and a stationary contact 133.

[0090] like Figure 4 As shown, the negative terminal assembly 2 includes a negative terminal 21, a negative connecting piece 23, and a negative socket 22 connected in sequence.

[0091] Continue to refer to Figure 4 As shown, the ground electrode wiring assembly 3 includes a ground electrode terminal 31, a ground electrode connecting piece 33, and a ground electrode socket 32 ​​connected in sequence.

[0092] Among them, the positive terminal 11 is used to connect the positive power line in the wall to the positive socket 12, the negative terminal 21 is used to connect the negative power line in the wall to the negative socket 22, and the ground terminal 31 is used to connect the ground power line in the wall to the ground socket 32.

[0093] In one configuration, the positive terminal 11 and positive socket 12 are integrally formed, the negative terminal 21 and negative socket 22 are integrally formed, and the ground terminal 31 and ground socket 32 ​​are integrally formed. Multiple positive terminals 11 are electrically connected to the same positive conductive strip, multiple negative terminals 21 are electrically connected to the same negative conductive strip, and multiple negative terminals 21 are electrically connected to the same ground conductive strip. The aforementioned positive, negative, and ground conductive strips are respectively electrically connected to the positive, negative, and ground power lines of the power supply. This results in a socket with multiple three-prong outlets.

[0094] In another scenario, the positive terminal 11, negative terminal 21, and ground terminal 31 are all screw terminals, resulting in a wall socket. The wiring principles of these three are similar, as detailed below:

[0095] You can refer to this. Figure 4 As shown, the terminal block includes a terminal housing and a terminal screw. The stud portion of the terminal screw extends into the terminal housing from its side. The top and bottom of the terminal housing are open. One end of the connecting piece of the wiring assembly connects to the socket, and the other end extends into the terminal housing from its top. The end of the terminal screw abuts against the surface of the connecting piece. The power cord inside the wall extends into the terminal housing from its bottom. The terminal screw is tightened to ensure a tight contact between the connecting piece and the power cord inside the terminal housing, enhancing the stability of the electrical connection.

[0096] It should be noted that the top mentioned above refers to the direction in which the panel 10 is located, and the bottom refers to the direction in which the base 8 is located. The wiring terminals mentioned above are positive terminal 11, negative terminal 21, or ground terminal 31. The wiring screws mentioned above are positive terminal screw 111, negative terminal screw 211, or ground terminal screw 311. The wiring chambers mentioned above are positive terminal chamber 112, negative terminal chamber 212, or ground terminal chamber 312. The connecting pieces mentioned above are a section of the positive terminal connecting piece assembly 13, or negative terminal connecting piece 23, or ground terminal connecting piece 33.

[0097] Regarding the features of the three sockets mentioned above, the positive socket 12 is positioned opposite to the positive socket 101 and their shapes match; the negative socket 22 is positioned opposite to the negative socket 102 and their shapes match; and the ground socket 32 ​​is positioned opposite to the ground socket 103 and their shapes match.

[0098] Therefore, as Figure 4 As shown, the opening of the positive electrode socket 12 is elongated, the opening of the negative electrode socket 22 is elongated, and the length directions of the two are perpendicular. Although the opening of the ground electrode socket 32 ​​is elongated, the inner surface that contacts the ground electrode pin 1003 is cylindrical and matches the outer surface of the ground electrode pin 1003.

[0099] Thus, during the process of inserting the plug into the socket, the positive pin 1001 passes through the positive socket 101 and extends into the positive socket 12, where it is electrically connected to the positive socket 12; the negative pin 1002 passes through the negative socket 102 and extends into the negative socket 22, where it is electrically connected to the negative socket 22; and the ground pin 1003 passes through the ground socket 103 and extends into the ground socket 32, where it is electrically connected to the ground socket 32.

[0100] Normally, once the plug is inserted into the socket and the two are electrically connected, power can be transmitted between the plug and the socket. However, considering the safety of users plugging and unplugging the plug, correspondingly, moving contacts and stationary contacts are arranged on the positive line. Power can only be transmitted between the plug and the socket when the plug is inserted into the socket and the moving contacts and stationary contacts are engaged.

[0101] The positive line is the line between the positive terminal 11 and the positive socket 12. Therefore, as... Figure 4 And refer to Figure 5 As shown, the positive terminal connector assembly 13 connecting the positive terminal 11 and the positive socket 12 includes a moving contact 135 and a stationary contact 133. Since the moving contact 135 is located on the surface of the moving contact piece and the stationary contact 133 is located on the surface of the stationary contact piece, therefore, as... Figure 4 As shown, the positive electrode connection assembly 13 includes a stationary contact 132, a stationary contact 133, a moving contact 134, and a moving contact 135.

[0102] As described above, the moving contact 135 and the stationary contact 133 are connected between the positive terminal 11 and the positive socket 12, for example, as Figure 4 As shown, the stationary contact 133 is electrically connected to the positive terminal 12, and the moving contact 135 is electrically connected to the positive terminal 11. Alternatively, the stationary contact 133 can be electrically connected to the positive terminal 11, and the moving contact 135 can be electrically connected to the positive terminal 12.

[0103] In this embodiment, there is no specific limitation on whether the moving contact 135 is electrically connected to the positive terminal 11 or the stationary contact 133 is electrically connected to the positive terminal 11. The choice can be made flexibly according to the assembly of the socket. In this embodiment, the moving contact 135 is electrically connected to the positive terminal 11 as an example.

[0104] The moving contact 135 is electrically connected to the positive terminal 11. Because the moving contact 135 is located on the surface of the moving contact piece 134, therefore, Figure 4 As shown, the moving contact 134 is electrically connected to the positive terminal 11. Similarly, as... Figure 4 As shown, the stationary contact 132 is electrically connected to the positive terminal socket 12.

[0105] In one example, to achieve electrical connection between the stationary contact 132 and the positive socket 12, such as Figure 4 As shown, the positive electrode connecting piece assembly 13 also includes a first connecting piece 131, which is connected between the stationary contact piece 132 and the positive electrode socket 12.

[0106] In one example, the positive electrode socket 12, the first connecting piece 131, and the stationary contact piece 132 can be integrally manufactured. For example, after manufacturing the metal sheet (such as a copper sheet), the metal sheet can be cut and bent according to its layout in the base 8 and its shape characteristics to obtain the desired shape. Figure 4 The positive terminal socket 12, the first connecting piece 131, and the stationary contact piece 132 are shown.

[0107] In one example, to achieve electrical connection between the moving contact 134 and the positive terminal 11, such as Figure 4 As shown, the positive electrode connecting piece assembly 13 may further include a second connecting piece 136, which is connected between the moving contact piece 134 and the positive electrode terminal 11.

[0108] In one example, the moving contact 135 can engage and disengage from the stationary contact 133 by oscillation; therefore, the moving contact 134 can perform an oscillating motion, and correspondingly, as... Figure 5 As shown, the second connecting piece 136 (i.e. the first segment 1361 of the second connecting piece 136) has a V-shaped support portion 1363. The bottom outer surface of the V-shaped support portion 1363 matches the bottom outer surface of the movable contact piece 134. The bottom of the movable contact piece 134 is supported in the V-shaped support portion 1363 and can swing in the V-shaped support portion 1363.

[0109] Among them, such as Figure 5 As shown, the bottom outer surface of the movable contact 134 is spherical, and the bottom inner surface of the V-shaped support 1363 is arc-shaped, and the two are matched.

[0110] In one example, such as Figure 3 As shown, the switch assembly of the socket includes a disconnect switch 4, which is used to control the engagement and disengagement of the moving contact 135 and the stationary contact 133. Specifically, the disconnect switch 4 is used to drive the moving contact 135 and the stationary contact 133 to engage when the ground electrode pin 1003 is inserted into the ground electrode sleeve 32, and to restore the disengagement of the moving contact 135 and the stationary contact 133 when the ground electrode pin 1003 is pulled out from the ground electrode sleeve 32.

[0111] To achieve the above-mentioned functions of the disconnect switch 4, correspondingly, such as Figure 6 As shown, the disconnect switch 4 includes a first moving member 41 with a transmission relationship, such as... Figure 7 As shown, the disconnect switch 4 also includes a second moving member 42, wherein, as Figure 6 And refer to Figure 3As shown, the first moving member 41 is located at the bottom of the ground electrode sleeve 32. When the first moving member 41 is inserted into the ground electrode sleeve 32 and located at the bottom of the ground electrode sleeve 32, the ground electrode pin 1003 can touch the first moving member 41 when it is inserted into the ground electrode sleeve 32. As the ground electrode pin 1003 continues to be inserted, the ground electrode pin 1003 can push the first moving member 41 to move. The second moving member 42 is connected to the moving contact piece 134 where the moving contact 135 is located, so that the second moving member 42 can drive the moving contact piece 134 to swing during the movement.

[0112] Thus, as Figures 7 to 9 As shown, the disconnect switch 4 is used so that when the ground electrode pin 1003 inserted into the ground electrode sleeve 32 pushes the first moving member 41 to move, the first moving member 41 drives the second moving member 42 to move, and the second moving member 42 drives the moving contact piece 134 to move, so that the moving contact 135 and the stationary contact 133 are engaged. When the ground electrode pin 1003 is pulled out from the ground electrode sleeve 32 and the first moving member 41 returns to its original position, the first moving member 41 drives the second moving member 42 to move, and the second moving member 42 drives the moving contact piece 134 to move, so that the moving contact 135 and the stationary contact 133 are separated.

[0113] In one example, such as Figure 8 As shown, when the positive plug 1001 enters the positive socket 12, the gap between the bottom surface of the plug head and the surface of the panel 10 is still relatively large. Therefore, the user's finger may touch the positive plug 1001. If the moving contact 135 and the stationary contact 133 are combined at this time, the positive plug 1001 will be energized, and the user will be electrocuted.

[0114] To prevent electric shock from users touching the positive pin with their fingers while plugging and unplugging the plug, the disconnect switch 4 is specifically used to engage the moving contact 135 and the stationary contact 133 when the positive pin 1001 is inserted into the positive socket 12 and the ground pin 1003 continues into the ground socket 32. (See reference...) Figure 8 and Figure 9 As shown. Before the positive electrode pin 1001 disengages from the positive electrode sleeve 12, when the ground electrode pin 1003 continues to be pulled out of the ground electrode sleeve 32, the moving contact 135 and the stationary contact 133 are driven to separate.

[0115] The aforementioned function of the disconnect switch 4 enables the socket to be plugged in without power. This means that during the insertion of the plug into the socket, after the positive pin 1001 enters the positive socket 12—for example, after the positive pin 1001 extends to a certain depth—the moving contact 135 and the stationary contact 133 reconnect. At this point, the electrical connection between the plug and the socket is established. Although the positive pin 1001 is energized, the distance between the bottom surface of the plug head and the upper surface of the panel 10 is relatively small, making it difficult for the user's fingers to penetrate, thus virtually eliminating the risk of electric shock.

[0116] Conversely, when the user unplugs the plug from the socket, the disconnect switch 4, between the positive pin 1001 disengaging from the positive socket 12, first drives the moving contact 135 and the stationary contact 133 to separate. Then, as the plug continues to be pulled out, although the gap between the bottom surface of the plug head and the top surface of the panel increases until the user's finger can fit in, since the moving contact 135 and the stationary contact 133 have already separated, the user's finger will not be electrocuted even if it touches the positive pin 1001.

[0117] It should be noted that in order to enable the socket to achieve plugging and unplugging without power, the socket parameters can be adjusted during the socket design phase by simulating the process of plugging and unplugging the socket. During the manufacturing phase, the above effect can be achieved through multiple tests.

[0118] The above is a functional introduction to disconnect switch 4. The location of disconnect switch 4 will be described below. Figure 3 As shown, the disconnect switch 4 is located between the positive terminal socket 12 and the negative terminal socket 22. The first moving member 41 is located near the end of the disconnect switch 4 and at the bottom of the ground terminal socket 32 ​​along its length. This positional relationship of the disconnect switch 4 is relatively compact in the socket, which helps to reduce the size of the socket.

[0119] Regarding the positional relationship of the positive terminal 11, the negative terminal 21, and the ground terminal 31, typically, the terminals are located adjacent to the sockets they are electrically connected to, for example... Figure 3 and Figure 4 As shown, the negative terminal 21 is adjacent to the negative socket 22, and the ground terminal 31 is adjacent to the ground socket 32. However, since the moving contact 135 and the stationary contact 133 are arranged between the positive terminal 11 and the positive socket 12, and the second moving part 42 of the disconnect switch 4 is connected to the moving contact piece 134, the positive terminal 11 and the positive socket 12 are distributed on both sides of the disconnect switch 4 along the width direction.

[0120] Therefore, both the positive terminal 11 and the negative terminal 21 are located on the side of the negative socket 22 of the disconnect switch 4. That is, the positive terminal 11, the negative terminal 21 and the negative socket 22 are located on the same side of the disconnect switch 4.

[0121] Regarding the ground terminal 31, since the ground terminal 31 is adjacent to the ground socket 32, and the first moving part 41 of the disconnect switch 4 is located at the bottom of the ground socket 32, and the first moving part 41 is arranged at one end of the disconnect switch 4 along its length, therefore, as Figure 3 As shown, the ground terminal 31 can be located in the length extension direction of the disconnect switch 4.

[0122] Among them, the ground terminal 31 is located in the length extension direction of the disconnect switch 4, for example, as Figure 3 As shown, the ground terminal 31, the ground socket 32, and the disconnect switch 4 are arranged in a common configuration.

[0123] Continue to refer to Figure 3 As shown, the positive terminal screw 111 of the positive terminal 11, the negative terminal screw 211 of the negative terminal 21, and the ground terminal screw 311 of the ground terminal 31 are all parallel to the length direction of the positive terminal sleeve 12.

[0124] Continue to refer to Figure 3 As shown, the positive terminal 11, negative terminal 21, and ground terminal 31 are arranged in a stepped manner along the length of the positive socket 12. The ground terminal 31 and the positive terminal 11 are located on opposite sides of the negative terminal 21. That is, along the length of the negative socket 22, the positive terminal 11 is located on one side of the negative terminal 21, and the ground terminal 31 is located on the other side of the negative terminal 21, with these two sides facing each other. Alternatively, it can be understood that the positive terminal 11, negative terminal 21, and ground terminal 31 are arranged in a stepped manner, with the negative terminal 21 serving as the intermediate step.

[0125] The arrangement of the positive terminal 11, negative terminal 21 and ground terminal 31 is relatively compact, which is conducive to reducing the size and volume of the socket and promoting the miniaturization of the socket.

[0126] In one example, as described above, the moving contact 135 and the stationary contact 133 are prone to severe arcing at the moment of separation. To reduce this arcing, accordingly, as... Figure 3 As shown, the socket also includes an arc-extinguishing device 5, which is used to activate arc extinguishing when the moving contact 135 and the stationary contact 133 are detected to switch from being engaged to being disengaged, and to deactivate arc extinguishing when the arc extinguishing duration is detected to reach the target duration.

[0127] like Figure 3 As shown, the arc extinguishing device 5 includes an arc extinguishing circuit board 51, a controller, and an arc extinguishing switch, both of which are located on the surface of the arc extinguishing circuit board 51.

[0128] Since the controller of the arc extinguishing device 5 needs to detect the status of the moving contact 135 and the stationary contact 133 in real time, the controller needs to be in working state at all times. Therefore, in order to provide power to the arc extinguishing circuit board 51, the positive power supply terminal 11 of the arc extinguishing circuit board 51 is electrically connected, and the negative power supply terminal 21 is electrically connected.

[0129] As described above, the positive terminal 11 and the moving contact 135 are connected via the second connecting piece 136. That is, the positive terminal 11 and the second connecting piece 136 are in a connected state. Therefore, if... Figure 3 As shown, the positive power supply terminal of the arc extinguishing circuit board 51 can be connected to the second connecting piece 136 (such as the first segment 1361 of the second connecting piece 136) via a wire.

[0130] Continue to refer to Figure 3 As shown, the negative power supply terminal of the arc extinguishing circuit board 51 can be connected to the negative terminal connecting piece 23 via a wire.

[0131] In one example, the arc-extinguishing device 5 extinguishes the arc by short-circuiting the moving contact 135 and the stationary contact 133. Therefore, a short-circuit circuit needs to be connected between the moving contact 135 and the stationary contact 133, and this short-circuit circuit is only energized when the moving contact 135 and the stationary contact 133 are about to separate.

[0132] Accordingly, one end of the arc extinguishing switch on the arc extinguishing circuit board 51 is electrically connected to the moving contact 135, and the other end is electrically connected to the stationary contact 133, forming a short circuit in the circuit where the arc extinguishing switch is located.

[0133] Regarding the electrical connection between one end of the arc extinguishing switch and the moving contact 135, as described above, the moving contact 135 is electrically connected to the second connecting piece 136. Therefore, one end of the arc extinguishing switch can be connected to the second connecting piece 136. Considering that the arc extinguishing switch is located on the arc extinguishing circuit board 51, the second connecting piece 136 can be electrically connected to the arc extinguishing circuit board 51. This electrical connection position is then electrically connected to one end of the arc extinguishing switch through the wiring of the arc extinguishing circuit board 51.

[0134] like Figure 10 As shown, since the second connecting piece 136 is electrically connected to the positive power supply of the arc extinguishing circuit board 51, one end of the arc extinguishing switch can be electrically connected to the positive power supply through the traces on the arc extinguishing circuit board 51, thereby realizing that one end of the arc extinguishing switch is electrically connected to the moving contact 135.

[0135] Regarding the other end of the arc-extinguishing switch being electrically connected to the stationary contact 133, as described above, the stationary contact piece 132 where the stationary contact 133 is located is connected to the first connecting piece 131, and the first connecting piece 131 is electrically connected to the positive terminal socket 12. Therefore, as... Figure 10 As shown, it is only necessary to electrically connect the first connecting piece 131 or the positive terminal socket 12 to the other end of the arc-extinguishing switch. Since the arc-extinguishing switch is located on the arc-extinguishing circuit board 51, it can be either the first connecting piece 131 or the positive terminal socket 12 that is electrically connected to the arc-extinguishing circuit board 51, and this electrical connection is then electrically connected to the other end of the arc-extinguishing switch through the wiring of the arc-extinguishing circuit board 51.

[0136] Therefore, as Figure 3 And refer to Figure 4 As shown, the positive terminal socket 12 has a terminal 121, which is connected to the arc extinguishing circuit board 51. The position where the terminal 121 is connected to the arc extinguishing circuit board 51 is electrically connected to the other end of the arc extinguishing switch.

[0137] Thus, the controller is used to close the arc extinguishing switch when it detects that the moving contact 135 and the stationary contact 133 have switched from being engaged to being disengaged, and to open the arc extinguishing switch when it detects that the closing time of the arc extinguishing switch has reached the target time.

[0138] As can be seen, when the moving contact 135 and the stationary contact 133 are about to separate, the arc-extinguishing switch closes, thus connecting the short circuit where the arc-extinguishing switch is located. Therefore, the current generated by the voltage difference between the moving contact 135 and the stationary contact 133 is transmitted along the short circuit, not between the moving contact 135 and the stationary contact 133. Once there is no significant current flowing between the moving contact 135 and the stationary contact 133, the air between them will not be broken down, thus preventing the generation of an electric spark (i.e., arcing) due to air breakdown.

[0139] Considering that the arc-extinguishing switch is an electronic switch, and electronic switches consume power, which is usually quite large, the controller can control the arc-extinguishing switch to open when it detects that the closing time of the arc-extinguishing switch has reached the target time.

[0140] The target duration is greater than or equal to the duration required for the moving contact 135 and the stationary contact 133 to separate to the target distance.

[0141] The target distance is such that the circuit between the moving contact 135 and the stationary contact 133 is open at this distance. For example, the target distance can be 2 millimeters.

[0142] In one example, the target duration can be calculated from the swing speed of the moving contact 135 when it separates from the stationary contact 133, and the target distance. For example, the target duration is 0.02 seconds or 0.03 seconds, or a value in between.

[0143] The above describes the electrical connection of the arc-extinguishing device 5. Regarding the position of the arc-extinguishing device 5 in the socket, the arc-extinguishing device 5 can be located on the same side of the disconnect switch 4 as the positive terminal socket 12. For example, as... Figure 3 As shown, the disconnect switch 4, the ground socket 32, and the ground terminal 31 are arranged in a collinear manner. That is, the center line of the disconnect switch 4 along the length direction and the center line of the ground terminal assembly 3 along the length direction are located on the same straight line. The positive terminal 11, the negative socket 22, and the negative terminal 21 are located on one side of this straight line, and the arc extinguishing device 5 and the positive socket 12 are located on the other side of this straight line.

[0144] In one example, to make the parts inside the socket compactly arranged, correspondingly, such as Figure 3 As shown, the arc-extinguishing circuit board 51 of the arc-extinguishing device 5 has a notch at the position corresponding to the positive terminal socket 12. The positive terminal socket 12 is arranged in the notch, which can reduce the size of the socket along the width direction of the disconnect switch 4.

[0145] In one example, to cut off the circuit when the arc-extinguishing function of the arc-extinguishing device 5 fails—for example, when the arc-extinguishing circuit board 51 malfunctions, or when the arc-extinguishing switch malfunctions—correspondingly, such as... Figure 10 As shown, the socket also includes a fuse 6, which is connected between the positive terminal 11 and the positive socket 12.

[0146] As an example, such as Figure 10 As shown, in the scheme where the stationary contact 133 is electrically connected to the positive socket 12 and the moving contact 135 is electrically connected to the positive terminal 11, the fuse 6 is connected between the positive terminal 11 and the moving contact 135.

[0147] For example, such as Figure 10 As shown, the second connecting piece 136, which is connected between the positive terminal 11 and the moving contact 134, includes a first segment 1361 and a second segment 1362. The first segment 1361 is connected between one end of the fuse 6 and the moving contact 134, and the second segment 1362 is connected between the other end of the fuse 6 and the positive terminal 11.

[0148] Of course, in the configuration where the stationary contact 133 is electrically connected to the positive socket 12 and the moving contact 135 is electrically connected to the positive terminal 11, the fuse 6 can also be connected between the positive socket 12 and the stationary contact piece 132. In this configuration, the first connecting piece 131 will be divided into two sections by the fuse 6, one section connecting the fuse 6 and the positive socket 12, and the other section connecting the fuse 6 and the stationary contact piece 132.

[0149] In this way, when the arc-extinguishing function of the arc-extinguishing device 5 fails, the fuse 6 can be quickly disconnected, thereby cutting off the electrical connection between the positive terminal 11 and the positive socket 12, enhancing the safety of the socket.

[0150] To further enhance the safety of the socket, for example, to prevent children's fingers from sticking into the sockets on panel 10 and touching the socket sleeves, correspondingly, such as Figure 2 As shown, the socket may also include a protective door 7, and the protective door 7 and its protective door accessories (such as a reset torsion spring) are assembled in the protective door mounting space of the fixing frame 9.

[0151] The protective door 7 is used to block the positive socket 12, negative socket 22 and ground socket 32 ​​when the ground pin 1003 of the plug is not inserted into the ground socket 103 of the socket; when the ground pin 1003 is inserted into the ground socket 103 and continues to be inserted through the ground socket 103, the ground pin 1003 pushes the protective door 7 to move, so as to expose the positive socket 12, negative socket 22 and ground socket 32; when the ground pin 1003 is pulled out from the ground socket 32 ​​and disengaged from the protective door 7, the protective door 7 returns to its original position to block the positive socket 12, negative socket 22 and ground socket 32.

[0152] In one example, the protective door 7 can be a sliding protective door or a rotating protective door. This embodiment does not specifically limit the movement mode of the protective door 7. Figure 2 The protective door shown is a rotating type.

[0153] For example, when the ground pin 1003 is inserted, it pushes the protective door 7 to rotate counterclockwise, so that the protective door 7 no longer blocks the positive terminal sleeve 12 and the negative terminal sleeve 22, that is, it exposes the positive terminal sleeve 12 and the negative terminal sleeve 22. When the ground pin 1003 is pulled out, the protective door 7 rotates clockwise under the action of the return torsion spring, so as to return to the position where it blocks the positive terminal sleeve 12, the negative terminal sleeve 22 and the ground terminal sleeve 32.

[0154] Based on the above, during the insertion of the plug into the socket, since the length of the ground pin 1003 is longer than that of the positive pin 1001 and the negative pin 1002, the ground pin 1003 first passes through the ground socket 103, thus pushing the protective door 7 to rotate and expose the positive socket 12 and the negative socket 22. As the plug continues to be inserted, the positive pin 1001 gradually enters the positive socket 12, and the negative pin 1002 gradually enters the negative socket 22. As the plug continues to be inserted, the ground pin 1003 begins to push the first moving part 41 of the disconnect switch 4 to move. When the first moving part 41 moves to a certain extent, it will drive the second moving part 42 to move (e.g., move rapidly), causing the second moving part 42 to drive the moving contact 134 to swing (e.g., swing rapidly toward the stationary contact 132), so that the moving contact 135 and the stationary contact 133 engage (e.g., engage rapidly).

[0155] As the plug is pulled out of the socket, the pressure of the ground pin 1003 on the first moving part 41 of the disconnect switch 4 decreases, and the first moving part 41 begins to reset. When the reset movement reaches a certain extent, it drives the second moving part 42 to move, causing the second moving part 42 to drive the moving contact 134 to swing, causing the moving contact 135 and the stationary contact 133 to separate. As the plug continues to be pulled out, the positive pin 1001 disengages from the positive socket 12, the negative pin 1002 disengages from the negative socket 22, and then the ground pin 1003 disengages from the ground socket 32. As the plug continues to be pulled out, the ground pin 1003 gradually moves away from the protection door 7, reducing the pressure on the protection door 7, causing the protection door 7 to reset under the action of the reset torsion spring. When the ground pin 1003 leaves the protection door 7, the protection door 7 resets to block the positive socket 12, the negative socket 22, and the ground socket 32.

[0156] When the moving contact 135 and the stationary contact 133 are about to separate, the controller on the arc extinguishing circuit board 51 can detect this and control the arc extinguishing switch on the arc extinguishing circuit board 51 to close, short-circuiting the moving contact 135 and the stationary contact 133, thereby preventing arcing between them.

[0157] As can be seen from the above, the socket is inserted into the ground socket sleeve 32 by the non-energized ground pin 1003, which triggers the disconnect switch 4 and controls the moving contact 135 and the stationary contact 133 to engage, which can enhance the safety of the plug.

[0158] When the plug is inserted into the socket, the positive pin 1001 first enters the positive socket 12, and then the ground pin 1003 continues to enter the ground socket 32. This triggers the trip switch 4, controlling the moving contact 135 and the stationary contact 133 to engage. At this time, the pins first extend into the socket, and after extending a certain depth, the moving contact 135 and the stationary contact 133 engage. This prevents the user from touching the positive pin and getting an electric shock, thus enhancing the safety of the socket.

[0159] When the plug is unplugged, the controller of the arc-extinguishing device can detect the removal of the ground pin (when the ground pin is first removed, the moving contact 135 and the stationary contact 133 are still in the connected state; they will only separate after being pulled out a certain distance). It then controls the arc-extinguishing switch to close. At this time, the short-circuit circuit containing the arc-extinguishing switch short-circuits the moving contact 135 and the stationary contact 133, thus preventing current from flowing between them. Once there is no significant current flowing between the moving contact 135 and the stationary contact 133, the air between them will not be broken down, preventing the generation of an electric spark (i.e., arcing) due to air breakdown.

[0160] Therefore, this socket can effectively solve the problem of severe arcing at the moment of separation between the moving contact 135 and the stationary contact 133, thereby extending the service life of the socket and enhancing its safety.

[0161] This embodiment also provides a power connector, such as Figure 1 As shown, the power connector includes a plug 100 and the aforementioned socket 200, and the plug 100 and socket 200 are pluggable and electrically connected.

[0162] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A socket, characterized in that, It includes a positive terminal wiring assembly (1), a negative terminal wiring assembly (2), a ground terminal wiring assembly (3), a disconnect switch (4), and an arc extinguishing device (5); The positive terminal assembly (1) includes a positive terminal (11), a positive socket (12) and a positive connecting piece assembly (13). The positive connecting piece assembly (13) is connected between the positive terminal (11) and the positive socket (12) and includes a moving contact (135) and a stationary contact (133). The negative terminal assembly (2) includes a negative terminal (21), a negative connecting piece (23), and a negative socket (22) connected in sequence. The ground terminal assembly (3) includes a ground terminal (31), a ground connecting piece (33), and a ground socket (32) connected in sequence. The disconnect switch (4) is used to drive the moving contact (135) and the stationary contact (133) to engage when the positive electrode pin (1001) is inserted into the positive electrode sleeve (12) and the ground electrode pin (1003) continues to be inserted into the ground electrode sleeve (32), and to restore the separation of the moving contact (135) and the stationary contact (133) when the ground electrode pin (1003) continues to be pulled out from the ground electrode sleeve (32) before the positive electrode pin (1001) disengages from the positive electrode sleeve (12); The arc extinguishing device (5) is used to activate arc extinguishing when the moving contact (135) and the stationary contact (133) are detected to switch from being engaged to being disengaged.

2. The socket according to claim 1, characterized in that, The positive electrode connecting piece assembly (13) includes a first connecting piece (131), a stationary contact piece (132), a moving contact piece (134), and a second connecting piece (136). The stationary contact (133) is located on the surface of the stationary contact piece (132), and the moving contact (135) is located on the surface of the moving contact piece (134); The first connecting piece (131) is connected between the positive electrode socket (12) and the stationary contact piece (132), and the second connecting piece (136) is connected between the positive electrode terminal (11) and the moving contact piece (134).

3. The socket according to claim 2, characterized in that, The second connecting piece (136) has a V-shaped support portion (1363). The bottom outer surface of the V-shaped support (1363) matches the bottom outer surface of the movable contact piece (134), the bottom of the movable contact piece (134) is supported in the V-shaped support (1363), and can swing in the V-shaped support (1363).

4. The socket according to claim 1, characterized in that, The socket also includes a fuse (6) connected between the positive terminal (11) and the positive socket (12).

5. The socket according to claim 1, characterized in that, The disconnect switch (4) includes a first moving part (41) and a second moving part (42) having a transmission relationship. The first moving part (41) extends into the ground electrode sleeve (32), and the second moving part (42) is connected to the moving contact piece (134) where the moving contact (135) is located; The disconnect switch (4) is used to cause the first moving member (41) to move when the ground electrode pin (1003) inserted into the ground electrode sleeve (32) pushes the first moving member (41) to move, the first moving member (41) drives the second moving member (42) to move, and the second moving member (42) drives the moving contact piece (134) to move, so that the moving contact (135) and the stationary contact (133) are engaged; when the ground electrode pin (1003) is pulled out from the ground electrode sleeve (32) and the first moving member (41) is reset, the first moving member (41) drives the second moving member (42) to move, and the second moving member (42) drives the moving contact piece (134) to move, so that the moving contact (135) and the stationary contact (133) are separated.

6. The socket according to claim 5, characterized in that, The disconnect switch (4) is located between the positive terminal socket (12) and the negative terminal socket (22), and the first moving part (41) is located at the end position near the disconnect switch (4).

7. The socket according to claim 1, characterized in that, The positive terminal (11) and the negative terminal (21) are located on the same side of the disconnect switch (4); The ground terminal (31) is located in the length extension direction of the disconnect switch (4).

8. The socket according to claim 1, characterized in that, The positive terminal (11), the negative terminal (21), and the ground terminal (31) are arranged in a stepped manner along the length of the positive socket (12); The ground terminal (31) and the positive terminal (11) are located on opposite sides of the negative terminal (21).

9. The socket according to claim 1, characterized in that, The disconnect switch (4), the ground electrode socket (32), and the ground electrode terminal (31) are arranged in a collinear manner in sequence; The positive terminal (12) and the arc extinguishing device (5) are located on one side of the disconnect switch (4), and the positive terminal (11), the negative terminal (22) and the negative terminal (21) are located on the other side of the disconnect switch (4).

10. The socket according to claim 1, characterized in that, The arc extinguishing device (5) includes an arc extinguishing circuit board (51), a controller, and an arc extinguishing switch, wherein the controller and the arc extinguishing switch are both located on the surface of the arc extinguishing circuit board (51); The positive terminal of the power supply of the arc extinguishing circuit board (51) is electrically connected to the positive terminal (11), and the negative terminal of the power supply is electrically connected to the negative terminal (21). One end of the arc-extinguishing switch is electrically connected to the moving contact (135), and the other end is electrically connected to the stationary contact (133); The controller is used to control the arc extinguishing switch to close when it detects that the moving contact (135) and the stationary contact (133) have switched from being engaged to being disengaged, and to control the arc extinguishing switch to open when it detects that the closing time of the arc extinguishing switch has reached the target time.

11. The socket according to claim 10, characterized in that, The target duration is greater than or equal to the duration required for the moving contact (135) and the stationary contact (133) to separate to the target distance.

12. The socket according to claim 1, characterized in that, The socket also includes a protective door (7), which is used for: When the ground pin (1003) is not inserted into the ground socket (103) of the socket, the protective door (7) blocks the positive socket (12), the negative socket (22) and the ground socket (32). When the ground electrode pin (1003) is inserted into the ground electrode socket (103) and continues to be inserted through the ground electrode socket (103), the ground electrode pin (1003) pushes the protective door (7) to move, so as to expose the positive electrode sleeve (12), the negative electrode sleeve (22) and the ground electrode sleeve (32). When the ground electrode pin (1003) is pulled out of the ground electrode sleeve (32) and disengaged from the protective door (7), the protective door (7) is reset to block the positive electrode sleeve (12), the negative electrode sleeve (22) and the ground electrode sleeve (32).

13. The socket according to claim 1, characterized in that, The panel (10) of the socket includes a positive terminal (101), a negative terminal (102) and a ground terminal (103) arranged in a triangular pattern. The ground electrode socket (103) is a circular hole, and the positive electrode socket (101) and the negative electrode socket (102) are both elongated holes with the elongation direction perpendicular to each other; A straight line along the width direction of the positive terminal (101) and passing through the center point is the same straight line along the length direction of the negative terminal (102) and passing through the center point, and the straight line is arranged vertically with the ground terminal (103).

14. A power connector comprising a plug (100) and a socket (200) as described in any one of claims 1 to 13, the plug (100) and the socket (200) being pluggable and electrically connected.

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