Metal electric connector

Abstract

The invention relates to the technical field of electric connectors, and discloses a metal electric connector, which comprises a plug provided with a pin; the socket is provided with a plug-in terminal, the contact pin is in plug-in connection with the socket, and the contact pin is electrically connected with the plug-in terminal; the locking structure is arranged in the socket, and the contact pin is arranged in the locking structure in a penetrating manner; the locking structure comprises a first positioning ring, a second positioning ring and an elastic piece, two ends of the elastic piece are respectively connected with the first positioning ring and the second positioning ring, the contact pin is provided with a step surface facing the upper end surface of the plugging terminal, the first positioning ring is abutted against the step surface, and the second positioning ring is abutted against the step surface. The second positioning ring abuts against the upper end face of the plug terminal, and at least part of the elastic piece abuts against the peripheral face of the pin. The electric connector has the effect of improving the operation convenience when the electric connector is used.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connectors, and in particular to a metal electrical connector. Background Art

[0002] In new energy vehicles, high power transmission places extremely high demands on connectors. This type of high-power electrical connector can meet the high voltage, high current and high power transmission requirements between the three electric systems of new energy vehicles, ensuring the stable operation of the vehicle's power system.

[0003] In the related art, the mutual mating mode of the male and female ends of the electrical connector is inconvenient to operate, which affects the assembly efficiency and has certain deficiencies in this aspect.

[0004] The present invention is proposed based on the above problems to solve the above technical problems. Summary of the invention

[0005] The present invention aims to at least solve the technical problems existing in the prior art, and is conducive to improving the operational convenience of the electrical connector when in use.

[0006] The present invention provides a metal electrical connector, comprising: a plug, wherein the plug is provided with a pin; a socket, wherein the socket is provided with a plug-in terminal, wherein the pin is plugged into the socket and the pin is electrically connected to the plug-in terminal; a locking structure, wherein the locking structure is arranged in the socket and the pin is inserted into the locking structure; the locking structure comprises: a first positioning ring, a second positioning ring and an elastic member, wherein the two ends of the elastic member are respectively connected to the first positioning ring and the second positioning ring, the pin has a step surface facing the upper end surface of the plug-in terminal, the first positioning ring abuts against the step surface, the second positioning ring abuts against the upper end surface of the plug-in terminal, and at least a portion of the elastic member abuts against the circumferential surface of the pin.

[0007] When in use, by inserting the plug into the socket, the pin will pass through the locking structure and come into contact with the plug-in terminal to form an electrical connection, and the locking structure arranged in the socket will fix the pin, with the first positioning ring abutting against the step surface of the pin, the second positioning ring abutting against the upper end surface of the plug-in terminal, and the elastic member forming a limit on the surface of the pin, thereby achieving a stable connection between the pin and the plug-in terminal. During operation, the elastic member abuts against the surface of the pin under its own elastic action, quickly and effectively fixing the pin, which is convenient and quick.

[0008] Furthermore, the elastic members are provided in a plurality of groups at intervals along the circumference of the insertion pin, and each group of the elastic members includes a transverse elastic rod, a vertical elastic rod and an oblique elastic rod. The circumferential surfaces of the first positioning ring and the second positioning ring are connected with the transverse elastic rod, the other end of the transverse elastic rod is connected to the first end of the oblique elastic rod, the other end of the oblique elastic rod is the second end, the distance between the first end and the axis of the first positioning ring is greater than the distance between the second end and the axis of the first positioning ring, the two ends of the vertical elastic rod are respectively connected to the second end of the oblique elastic rod connected to the first positioning ring and the second end of the oblique elastic rod connected to the second positioning ring, and the vertical elastic rod abuts against the circumferential surface of the insertion pin.

[0009] Furthermore, a first airbag is provided in the socket, and the vertical elastic rods of the plurality of groups of elastic members are all in contact with the inner side wall of the first airbag.

[0010] Furthermore, a second airbag is provided in the socket, and the insertion pin penetrates the second airbag and abuts against an inner wall of the second airbag.

[0011] Furthermore, the first airbag is connected to the second airbag via a connecting tube.

[0012] Furthermore, the socket is provided with a fixing member and an unlocking member, the fixing member is engaged with the plug, and the unlocking member is connected to the fixing member and is used to drive the fixing member to disengage from the plug.

[0013] Furthermore, the fixing member includes: a locking tongue, which is slidably arranged on the socket along a first direction, and a fixing groove is arranged on the circumference of the plug, and the first direction is the radial direction of the socket; a spring, the two ends of the spring are respectively connected to the socket and the locking tongue, and the spring is used to drive the locking tongue to be inserted into the fixing groove.

[0014] Further, the unlocking member includes: an unlocking ring, the socket is provided with an installation cavity, the unlocking ring is rotatably arranged in the installation cavity and is coaxially arranged with the socket; an unlocking block, the unlocking block is arranged on the circumferential surface of the unlocking ring, the lock tongue is provided with an unlocking groove, the unlocking ring is penetrated in the unlocking groove, and on the projection surface of the bottom wall of the installation cavity, the unlocking groove penetrates the two side walls of the unlocking block in the second direction to form a first notch and a second notch, the second direction is perpendicular to the first direction, the width of the first notch is greater than the width of the second notch, the groove wall of the unlocking groove away from the center of the socket is a first inclined surface, the unlocking block is close to the first notch on one side and has a second inclined surface, the first inclined surface is slidably matched with the second inclined surface; a driving part, the socket is provided with a driving part, the driving part is connected to the unlocking block and is used to drive the unlocking ring to rotate.

[0015] Furthermore, the driving part includes: a driving sleeve, which is arranged on the socket and located below the mounting cavity, and a limit piece is provided on the outside of the socket to limit the vertical movement of the driving sleeve along the height direction of the socket; a driving rod, the lower end of the driving rod is fixed to the driving sleeve, the upper end of the driving rod is bent and raised along the circumference of the socket toward the direction close to the lock tongue, the upper end of the driving rod passes through the unlocking block and slidably cooperates with the unlocking block, and the bottom wall of the mounting cavity is provided with an arc groove for the driving rod to move, when the driving rod moves downward, the unlocking block is driven to insert into the unlocking groove and cooperate with the unlocking block, and when the driving rod moves upward, the unlocking block is driven to disengage from the unlocking groove.

[0016] Furthermore, the circumferential surface of the socket is provided with a plurality of positioning grooves spaced apart along the circumferential direction, and the plug is provided with a positioning piece, and the positioning piece can be snap-fitted with one of the positioning grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the matching of a plug and a socket in an embodiment of the present invention; Figure 2 It is a partial cross-sectional schematic diagram of the mating of the plug and the socket in the embodiment of the present invention; Figure 3 is a schematic diagram of a locking structure in an embodiment of the present invention; Figure 4 for Figure 2 The enlarged schematic diagram of point A in the middle; Figure 5 for Figure 2 The enlarged schematic diagram of point B in the middle; Figure 6 is a schematic diagram of the interior of the installation cavity in an embodiment of the present invention; Figure 7 It is a structural schematic diagram of a driving unit in an embodiment of the present invention; Figure 8 A schematic diagram of the positioning member and the positioning groove being out of engagement in an embodiment of the present invention; In the figure: 1, plug; 11, pin; 111, first column; 112, second column; 113, third column; 12, plug housing; 13, fixing groove; 14, connecting part; 2, socket; 21, plug terminal; 211, plug hole; 22, slot; 221, first slot; 222, second slot; 223, third slot; 224, fourth slot; 23, locking bolt; 24, installation cavity; 25, positioning groove; 3, locking structure; 31, first positioning ring; 32, second positioning Ring; 33, elastic member; 331, transverse elastic rod; 332, vertical elastic rod; 333, oblique elastic rod; 4, first airbag; 5, second airbag; 6, connecting pipe; 7, fixing member; 71, locking tongue; 711, unlocking groove; 72, spring; 8, unlocking member; 81, unlocking ring; 82, unlocking block; 83, driving part; 831, driving sleeve; 832, driving rod; 9, limiting member; 10, positioning member; 101, hinged seat; 102, positioning rod; 103, holding rod; 20, sealing ring. DETAILED DESCRIPTION

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] Refer to the following Figure 1-Figure 7 A metal electrical connector provided according to the present invention is described.

[0020] Reference Figure 1-Figure 7 The present invention provides a metal electrical connector, comprising: a plug 1, a socket 2 and a locking structure 3, wherein the plug 1 is provided with a pin 11, the socket 2 is provided with a plug terminal 21, the pin 11 is plugged with the socket 2, and the pin 11 is electrically connected with the plug terminal 21, the locking structure 3 is provided in the socket 2, the pin 11 is inserted into the locking structure 3, the locking structure 3 is a conductive component, and the locking structure 3 is electrically connected with the pin 11 and the plug terminal 21 respectively, so as to improve the tightness of the matching between the plug 1 and the socket 2. The locking structure 3 comprises: a first positioning ring 31, a second positioning ring 32 and an elastic member 33, the two ends of the elastic member 33 are respectively connected with the first positioning ring 31 and the second positioning ring 32, the pin 11 has a step surface facing the upper end surface of the plug terminal 21, the first positioning ring 31 abuts against the step surface, the second positioning ring 32 abuts against the upper end surface of the plug terminal 21, and at least a part of the elastic member 33 abuts against the peripheral surface of the pin 11.

[0021] When in use, by inserting the plug 1 into the socket 2, the pin 11 will pass through the locking structure 3 and abut against the plug-in terminal 21 to form an electrical connection, and the locking structure 3 arranged in the socket 2 will fix the pin 11, through the first positioning ring 31 abutting against the step surface of the pin 11, the second positioning ring 32 abutting against the upper end surface of the plug-in terminal 21, and the elastic member 33 is used to form a limit on the surface of the pin 11, thereby achieving a stable connection between the pin 11 and the plug-in terminal 21. During operation, the elastic member 33 abuts against the surface of the pin 11 under its own elastic action, quickly and effectively fixing the pin 11, which is convenient and quick.

[0022] In some specific examples, the plug 1 includes a plug housing 1, the plug housing 1 has a first mating portion that abuts against the upper end surface of the socket 2, a second mating portion is formed at the lower end of the first mating portion, the socket 2 has a slot 22, the second mating portion is inserted into the slot 22 and abuts against the groove wall of the slot 22, and the outer diameter of the first mating portion is greater than the outer diameter of the second mating portion, so that the first mating portion abuts against the upper end surface of the socket 2. A sealing ring 20 is arranged around the second mating portion, and the sealing ring 20 forms a sealing effect on the connection and mating portion between the second mating portion and the slot 22. The pin 11 is arranged at the lower end of the second mating portion and abuts against the plug terminal 21. A flange may be fixed to the outside of the socket 2, and the socket 2 can be fixed to a corresponding position by the flange.

[0023] The slot 22 includes a first slot body 221, a second slot body 222, a third slot body 223 and a fourth slot body 224 arranged in sequence from top to bottom. Taking the upper end surface of the socket 2 as the projection surface, the cross-sections of the first slot body 221, the second slot body 222, the third slot body 223 and the fourth slot body 224 on the projection surface are all circular, and the slot diameters of the first slot body 221, the second slot body 222, the third slot body 223 and the fourth slot body 224 decrease in sequence from top to bottom. The second matching portion is inserted into the first slot body 221, and at least a portion of the bottom wall of the second matching portion abuts against the bottom of the first slot body 221.

[0024] The pin 11 includes a first column 111, a second column 112 and a third column 113 which are connected in sequence from top to bottom. Taking the upper end surface of the socket 2 as the projection surface, the cross-sections of the first column 111, the second column 112 and the third column 113 on the projection surface are all circular. The groove diameters of the first column 111, the second column 112 and the third column 113 decrease in sequence from top to bottom. The first column 111 is located in the second groove 222, and the second column 112 is located in the third groove 223. The end portion where the first column 111 and the second column 112 are connected forms a step surface, and the step surface faces one side of the plug-in terminal 21. The upper end surface of the plug-in terminal 21 is provided with a plug-in hole 211, and the third column 113 is plugged into the plug-in hole 211 to form an electrical connection with the plug-in terminal 21. The plug-in terminal 21 is plugged into the fourth slot body 224, and the upper end surface of the plug-in terminal 21 is flush with the slot bottom of the third slot body 223. The second positioning ring 32 is fixed to the slot bottom of the third slot body 223, and the second positioning ring 32 abuts against the upper end surface of the plug-in terminal 21. Specifically, a locking bolt 23 is threadedly connected to the plug hole 211, and the locking bolt 23 has a hollow hole, which passes through the upper and lower ends of the locking bolt 23. The third column 113 passes through the hollow hole and abuts against the plug hole 211. The locking bolt 23 passes through the second positioning ring 32 to press the second positioning ring 32 on the slot bottom of the third slot body 223, and the locking bolt 23 is a conductive member.

[0025] Reference Figure 2 , Figure 3 and Figure 4 According to an embodiment of the present invention, a plurality of groups of elastic members 33 are arranged at intervals along the circumference of the plug pin 11, and each group of elastic members 33 includes a transverse elastic rod 331, a vertical elastic rod 332 and an oblique elastic rod 333. The circumferential surfaces of the first positioning ring 31 and the second positioning ring 32 are connected with the transverse elastic rod 331, and the other end of the transverse elastic rod 331 is connected to the first end of the oblique elastic rod 333, and the other end of the oblique elastic rod 333 is the second end. The distance between the first end and the axis of the first positioning ring 31 is greater than the distance between the second end and the axis of the first positioning ring 31, and the two ends of the vertical elastic rod 332 are respectively connected to the second end of the oblique elastic rod 333 connected to the first positioning ring 31 and the second end of the oblique elastic rod 333 connected to the second positioning ring 32, and the vertical elastic rod 332 abuts against the circumferential surface of the plug pin 11.

[0026] In some examples, the peripheral wall of the second column 112 is recessed toward the center of the second column 112 to form a recessed portion, the recessed portion is located in the middle of the second column 112, and the upper end face and the lower end face of the recessed portion form a conical surface, the oblique elastic rod 333 connected to the first positioning ring 31 at least partially abuts against the upper conical surface, the oblique elastic rod 333 connected to the second positioning ring 32 at least partially abuts against the lower conical surface, and the vertical elastic rod 332 abuts against the peripheral wall of the recessed portion, thereby enabling the elastic member 33 to better cooperate with the pin 11 and improve the tightness of the connection.

[0027] The connection between the transverse elastic rod 331 and the oblique elastic rod 333 has an arc-shaped transition portion. After the pin 11 is inserted downward from the first positioning ring 31, until the step surface of the first column 111 abuts against the first positioning ring 31 and squeezes the first positioning ring 31, due to the structure of the elastic member 33 in this embodiment, the transverse elastic rod 331 and the oblique elastic rod 333 connected to the first positioning ring 31 apply force to the upper end of the vertical elastic rod 332, and the transverse elastic rod 331 and the oblique elastic rod 333 connected to the second positioning ring 32 apply force to the lower end of the vertical elastic rod 332, thereby making the vertical elastic rod 332 more tightly abut against the peripheral wall of the pin 11. It should be noted that the elastic member 33 in this embodiment is configured as a plurality of rods with elastic deformation and conductivity, which can not only achieve the clamping of the pin 11, but also improve the conductive effect.

[0028] Reference Figure 2 , Figure 4 According to an embodiment of the present invention, a first airbag 4 is provided in the socket 2 , and the vertical elastic rods 332 of the plurality of sets of elastic members 33 are all in contact with the inner side wall of the first airbag 4 .

[0029] The first airbag 4 is ring-shaped, the outer peripheral wall of the first airbag 4 is fixed to the groove wall of the third groove body 223, and the inner peripheral wall of the first airbag 4 is in contact with the outer side wall of the vertical elastic rod 332 of the plurality of sets of elastic members 33 to improve the contact tightness between the vertical elastic rod 332 and the insertion pin 11. The upper end surface of the first airbag 4 is lower than the upper end of the vertical elastic rod 332, and the lower end surface of the first airbag 4 is higher than the upper end of the vertical elastic rod 332.

[0030] Reference Figure 2 , Figure 4 According to an embodiment of the present invention, a second airbag 5 is provided in the socket 2 , and the pin 11 penetrates the second airbag 5 and abuts against the inner wall of the second airbag 5 .

[0031] The second airbag 5 is in a ring shape, and the outer peripheral wall of the second airbag 5 is fixed to the groove wall of the second groove body 222, and the inner peripheral wall of the second airbag 5 is in contact with the outer peripheral wall of the first column 111 of the plug pin 11 to improve the stability of the plug pin 11 after being inserted into the socket 2. In addition, a sealing ring 20 is provided on the lower end surface of the second matching portion, and the sealing ring 20 is in contact with the upper end surface of the second airbag 5. The lower end surface of the second airbag 5 is in contact with the groove bottom of the second groove body 222. The inner peripheral wall of the second airbag 5 forms an annular pressing airbag portion, which is in contact with the arc-shaped transition portion of the upper transverse elastic rod 331 and the oblique elastic rod 333, so that the locking structure 3 is tightly connected to the plug pin 11.

[0032] Reference Figure 2 , Figure 4 According to an embodiment of the present invention, the first airbag 4 is connected to the second airbag 5 via a connecting tube 6. By connecting the first airbag 4 and the second airbag 5 via the connecting tube 6, the fixing effect of the insertion pin 11 can be further enhanced.

[0033] Reference Figure 2 , Figure 5-Figure 7 According to an embodiment of the present invention, the socket 2 is provided with a fixing member 7 and an unlocking member 8, the fixing member 7 is engaged with the plug 1, and the unlocking member 8 is connected to the fixing member 7 and is used to drive the fixing member 7 to disengage from the plug 1. The fixing member 7 can further strengthen the engagement between the plug 1 and the socket 2, and the unlocking member 8 can facilitate the disengagement of the plug 1 from the socket 2.

[0034] Reference Figure 2 , Figure 5-Figure 7 According to an embodiment of the present invention, the fixing member 7 includes: a locking tongue 71 and a spring 72. The locking tongue 71 is slidably arranged on the socket 2 along a first direction. A fixing groove 13 is arranged on the circumference of the plug 1. The first direction is the radial direction of the socket 2. The two ends of the spring 72 are respectively connected to the socket 2 and the locking tongue 71. The spring 72 is used to drive the locking tongue 71 to be inserted into the fixing groove 13. An arc surface is formed on one end of the locking tongue 71 that cooperates with the fixing groove 13. When the plug 1 is inserted into the socket 2, it abuts against the arc surface, and can squeeze the locking tongue 71. The spring 72 is compressed. When the plug 1 is fully inserted into the socket 2, the fixing groove 13 on the plug 1 corresponds to the locking tongue 71. The spring 72 restores its own shape, driving the locking tongue 71 to slide to the side close to the fixing groove 13 and be inserted into the fixing groove 13, so as to limit the plug 1 and the socket 2.

[0035] Specifically, a plurality of locking tongues 71 are slidably connected to the socket 2, and the plurality of locking tongues 71 are arranged at intervals along the circumference of the socket 2. A plurality of fixing grooves 13 can be arranged at intervals along the circumference of the plug 1, and the plurality of fixing grooves 13 correspond one-to-one to the plurality of locking tongues 71. Preferably, the fixing grooves 13 are annular grooves, which are conducive to improving operational convenience.

[0036] Reference Figure 6-Figure 7According to an embodiment of the present invention, the unlocking member 8 includes: an unlocking ring 81, an unlocking block 82, and a driving portion 83. The socket 2 is provided with a mounting cavity 24, and the mounting cavity 24 is an annular cavity. The unlocking ring 81 is rotatably disposed in the mounting cavity 24 and is coaxially disposed with the socket 2. Specifically, the unlocking ring 81 is rotatably disposed on the inner cavity wall of the mounting cavity 24 and is coaxially disposed with the mounting cavity 24. The lock tongue 71 is provided with an unlocking groove 711. The unlocking ring 81 is penetrated in the unlocking groove 711. On the projection surface of the bottom wall of the mounting cavity 24, the unlocking groove 711 penetrates the two side walls of the unlocking block 82 in the second direction to form a first groove. The second direction is perpendicular to the first direction, the width of the first notch is greater than the width of the second notch, the groove wall of the unlocking groove 711 away from the center of the socket 2 is a first inclined surface, the unlocking block 82 is arranged on the circumference of the unlocking ring 81, the width of the first notch is greater than the thickness of the unlocking block 82, the thickness of the unlocking block 82 refers to the thickness along the radial direction of the unlocking ring 81, the unlocking block 82 is close to the side of the first notch and has a second inclined surface, the first inclined surface and the second inclined surface are slidably matched, and the socket 2 is provided with a driving part 83, the driving part 83 is connected to the unlocking block 82 and is used to drive the unlocking ring 81 to rotate. When the driving part 83 drives the unlocking ring 81 to rotate clockwise, it drives the unlocking block 82 to approach the first notch of the unlocking groove 711, the first inclined surface and the second inclined surface are matched, and the unlocking block 82 slides from the first notch to the second notch, so that the unlocking block 82 abuts against the first inclined surface of the lock tongue 71, and pushes the lock tongue 71 to slide along the first direction away from the center of the socket 2, thereby causing the lock tongue 71 to be out of the match with the plug 1.

[0037] In some examples, the upper end of the socket 2 has a fixing seat, which defines an installation cavity 24. The bottom wall of the installation cavity 24 has a mounting ring protruding from the installation cavity 24. The unlocking ring 81 is sleeved on the outer circumference of the mounting ring and rotatably cooperates with the mounting ring.

[0038] Reference Figure 6-Figure 7 According to an embodiment of the present invention, the driving part 83 includes: a driving sleeve 831 and a driving rod 832. The driving sleeve 831 is arranged on the socket 2 and is located below the installation cavity 24. The socket 2 is provided with a stopper 9 for limiting the vertical movement of the driving sleeve 831 along the height direction of the socket 2. The lower end of the driving rod 832 is fixed to the driving sleeve 831. The upper end of the driving rod 832 is bent and raised along the circumference of the socket 2 toward the direction close to the lock tongue 71, that is, the driving rod 832 takes the axis of the socket 2 as the center line and spirally surrounds along the circumference of the socket 2. The unlocking block 82 is provided with a curved groove, and the two ends of the curved groove respectively penetrate the two end surfaces of the unlocking block 82 along the axial direction of the socket 2. The driving rod 832 passes through the curved groove and slides with the curved groove. The upper end of the driving rod 832 passes through the unlocking block 82 and slides with the unlocking block 82. The bottom wall of the mounting cavity 24 is provided with an arc groove for the driving rod 832 to move. When the driving rod 832 moves downward, it drives the unlocking block 82 to insert into the unlocking groove 711 and cooperate with the unlocking block 82. When the driving rod 832 moves upward, it drives the unlocking block 82 to disengage from the unlocking groove 711.

[0039] In some specific examples, a plurality of slide grooves are installed on the bottom wall of the installation cavity 24, and a locking tongue 71 is slidably connected in each slide groove. Each locking tongue 71 is fixed to the groove wall of the slide groove close to the outer peripheral surface of the socket 2 by a spring 72, and the locking tongue 71 can slide in the first direction. The limiting member 9 is a limiting strip fixed to the outer side of the socket 2 and arranged in the vertical direction, and the driving sleeve 831 is slidably matched with the limiting member 9, so that the driving sleeve 831 slides in the vertical direction.

[0040] If there are multiple locking tongues 71, multiple unlocking blocks 82 are provided accordingly, and each locking tongue 71 is used in conjunction with an unlocking block 82, and each unlocking block 82 is used in conjunction with a driving rod 832. In this embodiment, four locking tongues 71 are preferably provided to improve the fixing effect of the plug 1. The lower ends of the four driving rods 832 are fixed to the upper end surface of the driving sleeve 831, and the upper ends of the four driving rods 832 are respectively plugged and matched with the four unlocking blocks 82.

[0041] In the initial position, the spring 72 drives the lock tongue 71 to extend out of the slide slot and into the socket 2, that is, at least part of the lock tongue 71 extends into the plug slot. Each set of driving rods 832 matched with the lock tongue 71 is configured such that the distance between the lower end of the driving rod 832 and the lock tongue 71 is greater than the distance between the upper end of the driving rod 832 and the lock tongue 71, the unlocking block 82 is located on one side of the first notch of the lock tongue 71, the upper end of the driving rod 832 passes through the upper end surface of the unlocking block 82 and is located in the installation cavity 24, and the upper end of the driving rod 832 is provided with a limit plate to prevent the driving rod 832 from being disengaged from the unlocking block 82. When the driving sleeve 831 drives the driving rod 832 to move up and down, the driving rod 832 moves along the arc groove.

[0042] When the plug 1 is inserted into the socket 2, the plug housing 1 squeezes the arc surface of the locking tongue 71 so that the locking tongue 71 is compressed back into the socket 2. When the plug 1 is fully inserted into the socket 2, the fixing groove 13 is aligned with the sliding groove, and the locking tongue 71 slides out and is inserted into the fixing groove 13 under the action of the spring 72 to fix the plug 1.

[0043] When the plug 1 needs to be disengaged from the socket 2, the driving sleeve 831 is pulled downward, so that the driving sleeve 831 drives the driving rod 832 to move vertically downward. Under the action of the driving rod 832, the unlocking block 82 is driven to slide in the direction close to the lock tongue 71 and insert into the unlocking groove 711, so that the first inclined surface and the second inclined surface cooperate, and the lock tongue 71 is driven to slide along the first direction away from the fixed groove 13, thereby disengaging the lock tongue 71 from the fixed groove 13. After the driving sleeve 831 is released, under the action of the spring 72, the lock tongue 71 overcomes the resistance of the unlocking block 82, and the lock tongue 71 slides along the first direction toward the center of the socket 2 to restore the initial position.

[0044] Reference Figure 1 , Figure 8 According to an embodiment of the present invention, a plurality of positioning grooves 25 spaced apart along the circumferential direction are provided on the circumferential surface of the socket 2 , and a positioning member 10 is provided on the plug 1 , and the positioning member 10 can be engaged with one of the positioning grooves 25 .

[0045] A plurality of limit blocks are fixed on the outer circumferential surface of the fixing seat of the socket 2 . The limit blocks are arranged at intervals along the circumference of the fixing seat. Two adjacent limit blocks form a positioning groove 25 . The positioning member 10 is engaged with one of the positioning grooves 25 .

[0046] In some specific examples, the positioning member 10 includes an articulated seat 101, a positioning rod 102 and a holding rod 103. A connecting portion 14 extending horizontally is provided on one side of the plug 1. The articulated seat 101 is provided on the lower end surface of the connecting portion 14. The holding rod 103 is rotatably matched with the articulated seat 101, and one end of the holding rod 103 extends toward the direction close to the socket 2. The holding rod 103 includes a first rod and a second rod. The first rod is located on the side of the articulated seat 101 close to the socket 2, and the second rod is located on the side of the articulated seat 101 away from the socket 2. Moreover, the distance between the end of the second rod away from the articulated seat 101 and the connecting portion 14 is greater than the distance between the end of the first rod away from the articulated seat 101 and the connecting portion 14. The positioning rod 102 is fixed to the end of the holding rod 103 close to the socket 2. A positioning block matched with the positioning groove 25 is provided on one side of the positioning rod 102. A torsion spring is provided on the articulated seat 101 to drive the positioning block to be inserted into the positioning groove 25. When the positioning block is engaged in the positioning groove 25, the circumferential freedom of movement of the plug 1 can be limited, so that the plug 1 can be stably matched with the socket 2. By pressing the second rod, the second rod can be moved close to the connecting portion 14, and then the end of the first rod away from the hinge seat 101 is moved away from the connecting portion 14, driving the positioning rod 102 to move downward, so that the positioning block and the positioning groove 25 are disengaged.

[0047] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0048] What has been described above are only preferred specific implementations of the embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and concepts of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A metal electrical connector, characterized in that: include: A plug (1), wherein the plug (1) is provided with a plug pin (11); A socket (2), the socket (2) being provided with a plug-in terminal (21), the plug-in pin (11) being plugged into the socket (2), and the plug-in pin (11) being electrically connected to the plug-in terminal (21); A locking structure (3), the locking structure (3) being arranged in the socket (2), and the plug pin (11) being inserted through the locking structure (3); The locking structure (3) comprises: a first positioning ring (31), a second positioning ring (32) and an elastic member (33); two ends of the elastic member (33) are respectively connected to the first positioning ring (31) and the second positioning ring (32); the plug pin (11) has a step surface facing the upper end surface of the plug terminal (21); the first positioning ring (31) abuts against the step surface; the second positioning ring (32) abuts against the upper end surface of the plug terminal (21); and at least a portion of the elastic member (33) abuts against the circumferential surface of the plug pin (11).

2. A metal electrical connector as claimed in claim 1, characterized in that: A plurality of groups of the elastic members (33) are arranged at intervals along the circumference of the insertion pin (11), and each group of the elastic members (33) comprises a transverse elastic rod (331), a vertical elastic rod (332) and an oblique elastic rod (333). The circumferential surfaces of the first positioning ring (31) and the second positioning ring (32) are both connected with the transverse elastic rod (331). The other end of the transverse elastic rod (331) is connected to the first end of the oblique elastic rod (333). The other end of the oblique elastic rod (333) is the second end. The distance between the first end and the axis of the first positioning ring (31) is greater than the distance between the second end and the axis of the first positioning ring (31). The two ends of the vertical elastic rod (332) are respectively connected to the second end of the oblique elastic rod (333) connected to the first positioning ring (31) and the second end of the oblique elastic rod (333) connected to the second positioning ring (32). The vertical elastic rod (332) abuts against the circumferential surface of the insertion pin (11).

3. A metal electrical connector as claimed in claim 2, characterized in that: A first airbag (4) is provided in the socket (2), and the vertical elastic rods (332) of the plurality of groups of elastic members (33) are all in contact with the inner side wall of the first airbag (4).

4. A metal electrical connector as claimed in claim 3, characterized in that: A second airbag (5) is provided in the socket (2), and the insertion pin (11) penetrates the second airbag (5) and abuts against an inner wall of the second airbag (5).

5. A metal electrical connector as claimed in claim 4, characterized in that: The first airbag (4) and the second airbag (5) are connected via a connecting pipe (6).

6. A metal electrical connector as claimed in claim 1, characterized in that: The socket (2) is provided with a fixing member (7) and an unlocking member (8), wherein the fixing member (7) is engaged with the plug (1) by snapping, and the unlocking member (8) is connected to the fixing member (7) and is used to drive the fixing member (7) to disengage from the plug (1).

7. A metal electrical connector as claimed in claim 6, characterized in that: The fixing member (7) comprises: A locking tongue (71), the locking tongue (71) being slidably disposed on the socket (2) along a first direction, a fixing groove (13) being disposed on a circumferential surface of the plug (1), the first direction being a radial direction of the socket (2); A spring (72), wherein two ends of the spring (72) are respectively connected to the socket (2) and the locking tongue (71), and the spring (72) is used to drive the locking tongue (71) to be inserted into the fixing groove (13).

8. A metal electrical connector as claimed in claim 7, characterized in that: The unlocking member (8) comprises: An unlocking ring (81), the socket (2) being provided with a mounting cavity (24), the unlocking ring (81) being rotatably disposed in the mounting cavity (24) and being coaxially arranged with the socket (2); An unlocking block (82), the unlocking block (82) being arranged on the circumferential surface of the unlocking ring (81), the locking tongue (71) being provided with an unlocking groove (711), the unlocking ring (81) being inserted into the unlocking groove (711), and on the projection surface of the bottom wall of the mounting cavity (24), the unlocking groove (711) passing through two side walls of the unlocking block (82) in a second direction to form a first notch and a second notch, the second direction being perpendicular to the first direction, the width of the first notch being greater than the width of the second notch, the groove wall of the unlocking groove (711) being away from the center of the socket (2) being a first inclined surface, the side of the unlocking block (82) close to the first notch being provided with a second inclined surface, the first inclined surface being slidably matched with the second inclined surface; A driving part (83), the socket (2) is provided with a driving part (83), the driving part (83) is connected to the unlocking block (82) and is used to drive the unlocking ring (81) to rotate.

9. A metal electrical connector as claimed in claim 8, characterized in that: The driving unit (83) comprises: a driving sleeve (831), the driving sleeve (831) being arranged on the socket (2) and located below the mounting cavity (24), and a limiting member (9) being provided outside the socket (2) for limiting the vertical movement of the driving sleeve (831) along the height direction of the socket (2); A driving rod (832), wherein the lower end of the driving rod (832) is fixed to the driving sleeve (831), the upper end of the driving rod (832) is bent and raised along the circumference of the socket (2) in a direction close to the locking tongue (71), the upper end of the driving rod (832) passes through the unlocking block (82) and slidably cooperates with the unlocking block (82), and the bottom wall of the mounting cavity (24) is provided with an arc-shaped groove for the movement of the driving rod (832), when the driving rod (832) moves downward, it drives the unlocking block (82) to insert into the unlocking groove (711) and cooperate with the unlocking block (82), and when the driving rod (832) moves upward, it drives the unlocking block (82) to disengage from the unlocking groove (711).

10. A metal electrical connector as claimed in claim 1, characterized in that: The peripheral surface of the socket (2) is provided with a plurality of positioning grooves (25) arranged at intervals along the circumferential direction, and the plug (1) is provided with a positioning member (10), and the positioning member (10) can be snap-fitted with one of the positioning grooves (25).

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