CN111490406A - Electric connection coupler and socket and automatic resilience mechanism thereof - Google Patents

Abstract

The invention discloses an electric connection coupler, a socket thereof and an automatic rebounding mechanism. The automatic rebounding mechanism is installed in a socket of an electric connection coupler, wherein the socket is provided with an upper cover, a lower cover, a rotatable protective cover installed between the upper cover and the lower cover, and a first electrode, the upper cover is provided with a guide groove used for guiding a plug of the electric connection coupler to rotate to a conductive position from an initial position by a preset angle, the protective cover is provided with a jack corresponding to a second electrode on the plug, the second electrode can be inserted from the jack and is electrically connected with the first electrode when the plug is rotated to the conductive position, the automatic rebounding mechanism comprises an elastic piece, one end of the elastic piece is installed on the upper cover, and the other end of the elastic piece is installed on the protective cover, and the elastic piece is provided with a resetting force capable of resetting the plug which is not rotated to the conductive position to the initial position. The invention provides safe operability, reliable connectivity and stable usability.

Description

Electric connection coupler and socket and automatic resilience mechanism thereof

Technical Field

The invention relates to an automatic rebounding mechanism, a socket with the automatic rebounding mechanism and an electric connection coupler with the automatic rebounding mechanism.

Background

The prior rotary conductive electric connection coupler mainly comprises a plug and a socket, wherein after the plug is inserted into the socket, the plug is rotated to a specified position at a certain angle in one direction so that an electrode on the plug is completely and electrically connected with an electrode on the socket, and therefore safe power-on connection is realized. However, in such an electrical connection coupler, sometimes the user may release the plug when the plug is not rotated to a specific position, and at this time, the electrodes on the plug may be partially (but not completely) contacted with the electrodes on the socket, so that the entire circuit is in a virtual connection state. If the electric connection coupler is used for a long time in the virtual connection state, the heating value of the virtual connection position is too high, so that the surrounding plastic parts are hot melted, and further, the fault is caused. Therefore, there is a need for a new type of electrical connection coupler that overcomes the above-mentioned functional deficiencies.

Disclosure of Invention

The invention aims to provide an electric connection coupler, a socket thereof and an automatic rebounding mechanism, wherein the automatic rebounding mechanism can reset a plug to an initial position when the plug is not rotated to the position, so that the electric connection coupler has safer and more reliable performance.

In order to achieve the above object, the present invention provides an automatic resilient mechanism, characterized in that the automatic resilient mechanism is installed in a socket of an electric connection coupler, wherein the socket has an upper cover, a lower cover, a rotatable protective cover installed between the upper cover and the lower cover, and a first electrode, the upper cover has a guide groove for guiding the plug of the electric connection coupler to rotate from an initial position to a conductive position by a predetermined angle, the protective cover is provided with a plug hole corresponding to a second electrode on the plug, the second electrode can be inserted into the plug hole and is electrically connected with the first electrode when the plug is rotated to the conductive position, the automatic rebounding mechanism comprises an elastic piece, one end of the elastic piece is arranged on the upper cover, the other end of the elastic piece is arranged on the protective cover, and the elastic piece has a resetting force which can reset the plug which is not rotated to the conductive position to the initial position.

In one or more embodiments of the present invention, the elastic member is a spring, and the two springs are diagonally disposed at two opposite corners of the upper cover.

In one or more embodiments of the present invention, two wings are formed on the outer periphery of the protective cover and extend outward, a first fixing post is formed on each wing, one end of each spring is fixedly mounted to the upper cover through a second fixing post disposed on the corner of the upper cover, and the other end of each spring is fixedly mounted to the protective cover through the first fixing post.

In one or more embodiments of the present invention, the auto-rebounding mechanism further includes a shock pad mounted on the upper cover through a mounting groove, the shock pad being in corresponding contact with a partial edge of the wing when the protective cover is in the initial position where the protective cover is not rotated.

In one or more embodiments of the present invention, each of the springs has the restoring force of 5N to 30N during operation; and/or each spring has a diameter of 5-6.5 mm and a length of 22-26 mm; and/or the spring is a piano wire spring or a stainless wire spring.

In one or more embodiments of the invention, each of the springs has a diameter of 5.8mm and a length of 24 mm.

In order to achieve the above object, the present invention further provides a socket, characterized in that the socket comprises the automatic resilient mechanism as described above.

In one or more embodiments of the present invention, the first electrode is a socket structure, the socket structure includes a socket tail and a socket head, and the socket head forms a socket for the second electrode to insert into and a connection portion electrically connected to the second electrode; the socket further comprises a wiring terminal and a terminal tile pad, wherein the wiring terminal is used for installing the first electrode, the wiring terminal is provided with an accommodating space for inserting the tail of the plug bush, the terminal tile pad is provided with a connecting end face which is in surface contact with the tail of the plug bush, and a wiring screw is in contact with the connecting end face and fixes the tail of the plug bush between the connecting end face and the fixing end face of the wiring terminal.

In one or more embodiments of the present invention, a hook is disposed on the fixed end surface of the connection terminal, and a hook portion matched with the hook is disposed on the tail portion of the plug bush corresponding to the fixed end surface; and/or the presence of a catalyst in the reaction mixture,

the first electrode comprises two power supply electrodes and a grounding electrode, each first electrode is installed in the electrode installation groove of the lower shell after being assembled by the wiring terminal and the terminal tile pad, and corresponding socket springs are respectively arranged at the inner side and the outer side of the socket head corresponding to each first electrode and are contacted with the back surface of the connecting part of the first electrode, wherein, the plug bush spring corresponding to the power electrode and the grounding electrode and positioned at the outer side is installed through a sliding block, the insertion sleeve spring corresponding to the power electrode at the inner side is installed through a spring installation groove having an arc-shaped bottom surface formed by further extending the corresponding electrode installation groove, the plug bush spring corresponding to the grounding electrode and positioned at the inner side is installed through a spring installation groove which is formed by further extending the corresponding electrode installation groove and has an arc-shaped bottom surface or is installed through another sliding block; and/or

The lower shell is also provided with a top column which is movably arranged through a top column spring and can move up and down along the insertion direction of the plug, and the upper part of the top column is provided with a positioning part, wherein the positioning part is matched and positioned with a positioning groove correspondingly arranged on the side surface of the protective cover when the plug is not inserted, and the positioning part is separated from the positioning groove after the plug is inserted in place.

In order to achieve the above object, the present invention further provides an electrical connection coupler, which includes a plug and the socket as described above.

The automatic rebounding mechanism can reset the plug to the initial position (namely, the position before the plug is initially inserted into the socket is not rotated) when the plug is not rotated to the position (namely, the conducting position), thereby providing safer operability, more reliable connectivity and more stable usability for users.

Drawings

FIG. 1 is an exploded view of a receptacle of an electrical connector according to a preferred embodiment of the present invention;

FIG. 2 is a front schematic view of the receptacle of FIG. 1 assembled;

FIG. 3 is a schematic view of the structure of the plug of the electrical connection coupler of the present invention;

FIG. 4 is a schematic structural view of the back side of the upper cover of the socket of FIG. 2, showing the structure of the automatic rebound mechanism of the present invention;

FIG. 5 is a schematic perspective view of a spring of the self-rebounding mechanism of FIG. 4;

fig. 6 is a schematic perspective view of a connection terminal in the socket of fig. 1;

FIG. 7 is a perspective view of the terminal pad of the receptacle of FIG. 1;

fig. 8 is a schematic structural view of the assembled socket structure of fig. 1, in which the first electrode, the connection terminal and the terminal pad are assembled and mounted by the connection screw;

FIG. 9 is a schematic view of a prior art first electrode and terminal assembled by a binding screw;

FIG. 10 is a top view of the preferred embodiment of the electrical connector coupler of the present invention after the first pole of the receptacle is assembled in the lower housing;

FIG. 11 is a side sectional view taken along the line A-A in FIG. 10;

FIG. 12 is an exploded view of a receptacle of an electrical connector according to another preferred embodiment of the present invention;

FIG. 13 is a top view of the socket of FIG. 12 after the first electrode is assembled within the lower shell;

fig. 14 is a side sectional view taken along the direction B-B in fig. 12.

Detailed Description

An electrical connector according to a preferred embodiment of the present invention includes a plug 90 (shown in fig. 3) and a receptacle (shown in fig. 1-2), as shown in fig. 1, the receptacle having an upper cover 2, a lower cover 11, a rotatable cover 3 mounted between the upper cover 2 and the lower cover 11, and a first electrode, for example, including two power electrodes 16 connected to L wires and N wires, respectively, and a ground electrode 14 connected to ground, referring to fig. 2, the upper cover 2 has a guide groove 200, the guide groove 200 includes an insertion opening 201, a positioning opening 202, and a communication groove (not shown) communicating the insertion opening 201 and the positioning opening 202, the insertion opening 201 corresponds to an initial position P1, the positioning opening 202 corresponds to a conductive position P2, and an included angle a between the initial position P1 and the conductive position P2, which may be 60 °, the guide groove 200 is used to guide the plug 90 to be rotated from the initial position P1 to a predetermined angle a (e.g., 60 °) when the plug 90 is fully inserted into the plug 90, the plug 90 and the ground electrode 96, and the plug 96, wherein the plug 90 and the plug 96 are fully connected to the plug 96, the plug 96 is capable of being fully connected to the electrical connector by rotating from the second electrode 96, the plug 96, and the plug 90.

As shown in fig. 3, the plug 90 further has a positioning block 91 which can move inward or outward along a direction I-I perpendicular to the outer surface of the plug 90 and can move inward relative to the outer surface of the plug, i.e. retract into the plug, in conjunction with an unlocking button 92. When the plug 90 is inserted into the socket, the positioning block 91 can slide along the guiding slot 200 of the upper cover 2 and guide the plug 90 to be rotated from the initial position P1 to the conducting position P2, and when the positioning block 91 is in the conducting position P2, the positioning block 91 is ejected out of the plug and is limited by the positioning opening 202 to fix the plug 90 in the socket, so that the first electrode and the second electrode can be kept in full contact, and the plug is in a safe use state. When the plug needs to be released, the positioning block 91 is retracted into the plug 90 by pressing the unlocking button 92, so that the positioning between the plug and the socket can be released, and thus the plug can be directly pulled out, or the plug can be pulled out after being reversely rotated counterclockwise along the guide slot 200 (shown in fig. 2) to the initial position P1.

In the embodiment shown in fig. 1, the first electrode of the receptacle, including, for example, the power electrode 16 and the ground electrode 14, may be of a socket construction (the details of which will be described later in connection with fig. 8), and may be mounted in a terminal block 13 using a terminal pad 21 and secured by a binding screw 20. As shown in fig. 10 to 14, the power electrode 16 and the ground electrode 14 are assembled by the connecting terminal 13 and the terminal pad 21, and then are respectively mounted in and limited by corresponding electrode mounting grooves (e.g. including the power electrode mounting groove 116 and the ground electrode mounting groove 114) on the lower shell 11. And, corresponding to the power electrode 16 and the ground electrode 14, the inner and outer sides thereof are respectively provided with corresponding socket springs 18 to contact with them (for example, the back sides of the connection portions 1613, 1614 shown in fig. 8 contact with them), so that the first electrode and the second electrode on the plug can be reliably electrically connected. Corresponding to the power supply electrode 16 and the ground electrode 14, the outer socket spring 18 is attached via the electrode slider 8 and the ground slider 12, respectively. The socket spring 18 located at the inner side corresponding to the power electrode 16 is installed through a spring installation groove having an arc-shaped bottom surface (refer to the spring installation groove 1122 extended from the ground electrode installation groove 114 shown in fig. 11) further extended from the corresponding power electrode installation groove 16. The insertion spring 18 located at the inner side corresponding to the ground electrode 14 may be installed through a spring installation groove 1142 having an arc-shaped bottom surface formed by further extending the corresponding ground electrode installation groove 114 (as in the embodiment shown in fig. 10 and 11), or may be installed through another slider 122 (as in the embodiment shown in fig. 12 and 13).

The lower shell 11 also has a mounting post 10 at the center, and the protecting cover 3 is pivotally mounted through the mounting post 10. In other embodiments, an insulating plate 6 may be further disposed between the protective cover 3 and the first electrode, the insulating plate 6 may also be pivotally mounted via the mounting post 10, and a sliding slot 61 is correspondingly disposed on the insulating plate 6 for the second electrode on the plug to be inserted therein and slide along from the initial position P1 to the conductive position P2.

Preferably, referring to fig. 1 in combination, a slider 5 may be further provided at a position corresponding to the insertion hole 301 on the rear surface of the protective cover 3, and slidably mounted in a slider mounting groove 305 (see fig. 4) on the protective cover 3 by a slider spring 4. When the second electrode of the plug is inserted into the inserting hole 301, the sliding block 5 is pushed away to expose the sliding slot 61 on the insulating plate 6, so that the second electrode can be inserted into the sliding slot 61 and rotate clockwise along the sliding slot 61 from an initial position P1 (see fig. 2) to a conducting position P2 (see fig. 2); when the plug is not inserted, the sliding block 5 closes the plugging hole 301 under the reset action of the sliding block spring 4, so that the poor contact caused by the falling of pollutants such as dust into the socket through the plugging hole 301 can be prevented.

The socket can fix the upper cover 2 and the lower cover 11 by assembling screws 9 after the assembly is finished. A decorative plate 1 can be further mounted on the upper cover 2 through a mounting screw 19 to make the socket more beautiful in appearance, and the front surface of the socket after being assembled is shown in fig. 2. The socket may also be provided with a mark 22, which may indicate the use method of the socket, or other warning marks, etc., which are not intended to limit the present invention.

In particular, the socket further has an automatic resilient mechanism, which is mounted in the socket, for example between the protecting cover 3 and the upper cover 2. The automatic resilient mechanism includes an elastic member having one end mounted on the upper cover 2 and the other end mounted on the protective cover 3, wherein the elastic member has a restoring force capable of restoring the plug 90, which is not rotated to the conductive position P2, to the initial position P1.

In the present embodiment, as shown in fig. 4, the elastic member may be a spring 17, and the number of the springs may be two, which are diagonally disposed at two opposite corners of the upper cover 2. In the embodiment shown in fig. 4, two wings 31 are formed on the outer periphery of the protecting cover 3 and extend outward, a first fixing post 37 is formed on each wing 31, one end of each spring 17 is fixedly mounted to the upper cover 2 through the second fixing post 27 on the corresponding corner of the back surface of the upper cover 2, and the other end of each spring 17 is fixedly mounted to the protecting cover 3 through the first fixing post 37.

In the present invention, each spring 17 may have a return force of 5N to 30N during operation, preferably, as shown in FIG. 5, each spring may have a diameter D of, for example, 5mm to 6.5mm, preferably 5.8 mm. the length L of each spring 17 may be, for example, 22 to 26mm, preferably 24 mm. the fixed end of each spring 17 has an opening O having a diameter of, for example, 2 mm. the spring 17 may be a wire spring or a stainless wire spring.

Preferably, as shown in fig. 4, and with reference to fig. 1, the automatic rebounding mechanism may further include a shock-absorbing pad 15, which may be mounted on the upper cover 2 through a mounting groove 25, the shock-absorbing pad 15 being in corresponding contact with a portion of the edge of the wing 31 when the protecting cover 3 is in the initial position where it is not rotated. The shock absorbing pad 15 may be made of TPU. The shock pad 15 can protect the gap between the protection cover 3 and the upper lid 2 from being damaged by an excessive rebound impact of the spring 17.

Preferably, as shown in fig. 6, the connecting terminal 13 includes opposite end surfaces 131 and 132 and opposite end surfaces 133 and 134, and the end surfaces 131-134 surround to form a receiving space 130. Wherein, the end face 131 is also provided with a screw hole 135.

As shown in fig. 7, the terminal pad 21 is substantially n-shaped, and includes a fixing end surface 211 and a connecting end surface 212 opposed to each other, and an intermediate end surface 213 connecting the fixing end surface 211 and the connecting end surface 212, and the fixing end surface 211 is provided with a screw hole 215. The connecting end surface 212 may preferably have a curvature, e.g. adapted to the outer surface of the first electrode.

As shown in fig. 8, the first electrode may be a socket structure, for example, the power electrode 16, the socket structure of the power electrode 16 may be formed by bending a strip electrode, and is formed with a socket head 161 and a socket tail 162 by bending, wherein the socket head 161 includes a socket 1610 defined by two bent ends 1611 and 1612 for inserting the second electrode, and connecting portions 1613 and 1614 for electrically connecting with the inserted second electrode. As shown in fig. 1, when mounting, a socket spring 18 may be disposed on the back of the connection portions 1613 and 1614, so that the connection portions 1613 and 1614 may be in close contact with the second electrode. The socket tail 162 is inserted into the receiving space 130 of the connecting terminal 13, the connecting end surface 212 of the terminal pad 21 is inserted into the receiving space 130 and makes surface contact with the socket tail 162, and the binding screw 20 passes through the screw hole 215 (see fig. 7), the screw hole 135 (see fig. 6) and makes contact with the connecting end surface 212, so as to fix the socket tail 162 between the connecting end surface 212 and the end surface 132 of the connecting terminal 13.

Compared with the prior art shown in fig. 9, the present invention as shown in fig. 8 has a structure that the terminal end portion of the screw is firstly in surface contact with the stress dispersion design, for example, the connecting end surface 212 of the terminal pad is formed in surface contact (the hardness of the terminal pad is greater than that of the wiring and the first electrode), and then the terminal end portion of the screw is in contact with the stress dispersion structure, so that the problem of effective stress concentration in the prior art is avoided, because the prior art directly screws the terminal pad and the wiring terminal 13 'and screws the wiring terminal 13' directly, and when the wiring screw 20 is screwed down by the lead wire (i.e., the screw end portion of the wiring screw 20 is in direct contact with the socket tail portion 162 'of the power electrode 16', the deformation of the socket tail portion 162 'at the wiring position is caused by the relatively concentrated screwing force (i.e., the screw end portion of the wiring screw 20 is in direct contact with the socket tail portion 162' of the power electrode, and the contact area is small).

Preferably, as shown in fig. 8, in the present invention, the end surface 132 (i.e. the fixed end surface) of the connection terminal 13 is further provided with a hook 1322, the end surface of the plug bush tail 162 corresponding to the end surface 1322 is provided with a hook 1622 matched with the hook 1322, and the first electrode and the connection terminal 13 can be more firmly mounted by the matching and clamping of the hook 1322 and the hook 1622.

In a preferred embodiment of the present invention, as shown in fig. 10 to 11, the outer side socket spring 18 is installed through the electrode slider 8 and the ground slider 12, and the inner side socket spring 18 is installed through a spring installation groove having an arc-shaped bottom surface to ensure that each socket spring 18 is assembled in place. For example, as shown in fig. 11, the inner and outer sides of the ground electrode 14 are respectively provided with an inner socket spring 182 and an outer socket spring 181, wherein the socket spring 181 is installed through the ground slider 12, and the socket spring 182 is installed through a spring installation groove 1142 having an arc bottom surface further extended from the ground electrode installation groove 114.

For the embodiment shown in fig. 10-11, since the upper portion (not labeled) of the ground electrode 14 is in electrical contact with the ground electrode on the plug after the plug is inserted into the socket (i.e., the ground electrode 94 on the plug is in electrical contact with the ground electrode 14 on the socket during rotation of the plug from the initial position P1 to the conducting position P2), the tightening portion of the binding screw 20 for fixing the ground electrode 14 is caused to interfere with the inner side surface of the ground electrode mounting groove 114 during rotation, as shown in fig. 11. In order to avoid the interference, in another preferred embodiment of the present invention, the ground electrode mounting groove 114 may be shifted outward corresponding to the interference portion, as shown in fig. 12 to 14, that is, the ground electrode mounting groove 114 is expanded outward, however, due to the particularity of the injection molding process, considering the possibility of product molding and the normal assembly of the socket spring 182, the present invention preferably adds another slider 122 for mounting the socket spring 182, so that the ground electrode 14 is limited by the cooperation of the sliders and the socket spring on the inner and outer sides, thereby avoiding the interference between the tightening screw 20 for mounting the ground electrode 14 and the inner side surface of the ground electrode mounting groove 114.

Preferably, as shown in fig. 12, the present invention further movably mounts a top post 7 on the lower case 11 of the socket by a top post spring 77, and the top post 7 can move up and down along the insertion direction of the plug. After installation, a positioning portion (not shown) located at the upper portion of the top pillar 7 passes through the through hole 67 of the insulating plate 6 and can be positioned in cooperation with the positioning groove 36 provided at the side of the protecting cover 3. When the plug is not inserted, the positioning portion of the top pillar 7 is matched with the positioning groove 36 on the protecting cover 3 for positioning, so as to limit the protecting cover 3 from rotating and ensure that the socket is at the initial position. When a plug is inserted into the socket, the grounding electrode 94 (see fig. 3) on the plug is inserted downward into the socket, and when the grounding electrode 94 is inserted into the socket, the grounding electrode 94 drives the top pillar 7 to move downward until the positioning portion of the top pillar 7 is separated from the positioning groove 36 of the protecting cover 3 (i.e. the plug is inserted in place), the plug can be rotated, so that the rotation of the plug can drive the protecting cover 3 to rotate. During the downward insertion of the plug, if the grounding electrode 94 is not inserted into position (i.e. the positioning portion of the top pillar 7 is not completely separated from the positioning groove 36 of the protecting cover 3), the plug is restricted from rotating. During the rotation of the plug, if the plug is not rotated to the proper position, the protecting cover 3 will restore the plug to the initial position under the action of the automatic resilient structure. The above structures, i.e., the top post 7, the top post spring 77, the through hole 67, the positioning groove 36, etc., can be also disposed in the socket of the embodiment shown in fig. 1, and are not described herein again.

When the electric connection coupler is used, after a plug is inserted into a socket (at the moment, the plug is not electrified), the plug is rotated by 60 degrees clockwise to a conducting position (at the moment, a positioning block of the plug is bounced into a positioning opening of a guide groove of an upper cover, and at the moment, the plug is electrified), so that the electric connection coupler can be used. Moreover, the invention avoids the virtual connection state by the automatic rebounding mechanism (such as a spring) arranged in the socket, if the user does not rotate the plug to the designated position (such as the conducting position P2) during the use, the plug will be forcibly pulled back to the initial position P1 (namely the position where the plug is just inserted into the socket) under the action of the restoring force of the spring. Therefore, the invention greatly improves the functional defects of the traditional socket (a low-current plug and a socket), and has safe operability, reliable connectivity and stable usability.

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims (10)

1. An automatic rebounding mechanism, characterized in that, the automatic rebounding mechanism is installed in a socket of an electrical connection coupler, wherein the socket has an upper cover, a lower cover, a rotatable protecting cover installed between the upper cover and the lower cover, and a first electrode, the upper cover has a guiding slot for guiding a plug of the electrical connection coupler to rotate from an initial position by a predetermined angle to a conductive position, the protecting cover has a plugging hole corresponding to a second electrode on the plug, the second electrode can be inserted from the plugging hole and is electrically connected to the first electrode when the plug is rotated to the conductive position, the automatic rebounding mechanism comprises:

and one end of the elastic piece is arranged on the upper cover, and the other end of the elastic piece is arranged on the protective cover, wherein the elastic piece has a resetting force capable of resetting the plug which is not rotated to the conductive position to the initial position.

2. The automatic rebounding mechanism according to claim 1, wherein said elastic member is a spring, and said two springs are diagonally disposed at positions corresponding to two opposite corners of said upper cover.

3. The automatic rebounding mechanism according to claim 2, wherein two wings are formed on the outer periphery of the protecting cover to extend outwardly, a first fixing post is formed on each wing, one end of each spring is fixedly attached to the upper cover through a second fixing post disposed on the corner of the upper cover, and the other end of each spring is fixedly attached to the protecting cover through the first fixing post.

4. The automatic rebounding mechanism according to claim 3, further comprising a shock-absorbing pad mounted to the upper cover through a mounting groove, the shock-absorbing pad being in corresponding contact with a partial edge of the wing portion when the protecting cover is in the initial position where it is not rotated.

5. The automatic rebounding mechanism according to claim 2, 3 or 4, wherein each of said springs has said returning force of 5N to 30N during operation; and/or each spring has a diameter of 5-6.5 mm and a length of 22-26 mm; and/or the spring is a piano wire spring or a stainless wire spring.

6. The automatic rebounding mechanism according to claim 5, wherein each of said springs has a diameter of 5.8mm and a length of 24 mm.

7. A socket comprising an automatic rebounding mechanism according to any one of claims 1 to 6.

8. The socket of claim 7, wherein the first electrode is a socket structure, the socket structure includes a socket tail and a socket head, and the socket head is formed with a socket for the second electrode to insert and a connecting portion electrically connected to the second electrode; the socket further comprises a wiring terminal and a terminal tile pad, wherein the wiring terminal is used for installing the first electrode, the wiring terminal is provided with an accommodating space for inserting the tail of the plug bush, the terminal tile pad is provided with a connecting end face which is in surface contact with the tail of the plug bush, and a wiring screw is in contact with the connecting end face and fixes the tail of the plug bush between the connecting end face and the fixing end face of the wiring terminal.

9. The socket of claim 8, wherein the fixed end surface of the connecting terminal is provided with a hook, and the tail of the plug bush corresponding to the fixed end surface is provided with a hook portion engaged with the hook; and/or the presence of a catalyst in the reaction mixture,

the first electrode comprises two power supply electrodes and a grounding electrode, each first electrode is installed in the electrode installation groove of the lower shell after being assembled by the wiring terminal and the terminal tile pad, and corresponding socket springs are respectively arranged at the inner side and the outer side of the socket head corresponding to each first electrode and are contacted with the back surface of the connecting part of the first electrode, wherein, the plug bush spring corresponding to the power electrode and the grounding electrode and positioned at the outer side is installed through a sliding block, the insertion sleeve spring corresponding to the power electrode at the inner side is installed through a spring installation groove having an arc-shaped bottom surface formed by further extending the corresponding electrode installation groove, the plug bush spring corresponding to the grounding electrode and positioned at the inner side is installed through a spring installation groove which is formed by further extending the corresponding electrode installation groove and has an arc-shaped bottom surface or is installed through another sliding block; and/or

The lower shell is also provided with a top column which is movably arranged through a top column spring and can move up and down along the insertion direction of the plug, and the upper part of the top column is provided with a positioning part, wherein the positioning part is matched and positioned with a positioning groove correspondingly arranged on the side surface of the protective cover when the plug is not inserted, and the positioning part is separated from the positioning groove after the plug is inserted in place.

10. An electrical connector coupler comprising a plug and a socket as claimed in any one of claims 7 to 9.

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