Electric connector

Abstract

The utility model discloses an electric connector, which belongs to the technical field of relay protection and control of an electric power system, and can solve the problems of high production cost and poor electric connection reliability of the electric connector. The electric connector comprises a plug assembly and a socket assembly. Paired jack units in the plug assembly are uniformly distributed on a plug shell unit along the long axis direction; the metal plate round pin jack of the plug shell unit comprises a current metal plate round pin jack. A jack supporting part of the current metal plate round needle jack is provided with a plurality of bent structures; the paired current metal plate round needle jacks are oppositely arranged by taking the jack supporting parts as contact ends; paired plug units in the socket assembly are uniformly distributed on a socket shell along the long axis direction; the plug unit comprises a metal plate round needle plug; and the metal plate round needle plugs and the metal plate round needle jacks are in one-to-one correspondence in position and are integrally formed by plates respectively. The electric connector provided by the utility model can reduce the production cost, improves the reliability and accuracy of electric connection, and is convenient to plug and unplug; the method is especially suitable for power system secondary equipment comprising a current loop.

Description

Technical Field

[0001] The utility model relates to the technical field of relay protection and control of power systems, and particularly relates to an electrical connector. Background Art

[0002] In the prior art, the stability and reliability of the function realization of a two-piece electrical connector mainly depend on the matching structure of the electrical contact pairs between the socket and the plug and the wiring method of the lead wires. Most of the matching structures between the electrical contact pairs adopt methods such as the cooperation of sheet metal finger-shaped spring pieces and sheet metal square needles, and the cooperation of circular jacks and circular pins.

[0003] Although the sheet metal finger-shaped spring pieces and the sheet metal square needles are convenient to process, the pin structure of the sheet metal square needles usually causes few contact points to be formed between the electrical contact pairs, easily leading to contact failure between the electrical contact pairs and a relatively high probability of interruption of the electrical connection signal, which is particularly disadvantageous for current circuits with automatic short connection requirements. The circular-mode pins and jacks are usually made of copper alloy rods. Not only does the processing and forming process include turning, milling, drilling, pressing, etc., and the machining process flow of the pins and jacks is complex, with a large amount of consumables and high costs, but it also restricts the connection technical measures of the wire lead-out ends of the electrical connector. For example, only cold crimping wire connection can be adopted.

[0004] The wiring methods of the wiring terminals of the prior art electrical connectors also include screw crimping wire connection, spring crimping wire connection, and axial screw wire crimping. Spring crimping includes modes such as pull-back spring crimping and disc spring crimping. Among them, axial screw wire crimping is applicable to large cross-section wires and is not applicable to the connection of smaller cross-section wires in secondary equipment of power systems. Moreover, the anti-loosening performance of screw crimping is poor under vibration conditions; although spring crimping and cold crimping can effectively prevent loosening under vibration conditions, special tools are required for cold crimping wiring and wire loading and unloading processes; the electrical contact pairs (pins and jacks) made of copper rods as machining raw materials not only have a relatively complex production process and high costs, but also require welding or riveting a transition metal part to crimp the lead wires with springs; even so, the welding points or riveting points may also loosen instantaneously during electrical connection, increasing the probability of major accidents. All of these will affect the reliability of the electrical connector, especially being disadvantageous for AC current circuits.

[0005] Furthermore, in a current circuit, incorrect insertion and extraction of a two-piece connector easily cause an open circuit in the current circuit and lead to accidents. Usually, an electrical connection part that can achieve automatic short connection needs to be added to the current circuit so that the current circuit can be automatically short-connected before the main circuit is disconnected to prevent an open circuit. This method will increase the components of the electrical connector and affect the electrical connection reliability.

[0006] In addition, currently, there is no auxiliary tool for inserting and removing the plug of the electrical connector from the socket, and the operation is time-consuming and laborious.

[0007] It is a topic that those skilled in the art need to study whether a more suitable electrical connector for secondary equipment in the power system can be improved to reliably prevent the open circuit of the current loop. Summary of the Invention

[0008] In view of the above analysis, the purpose of the present utility model is to provide an electrical connector to solve the technical problems of high production cost and poor electrical connection reliability of electrical connectors in the field of relay protection and control technology for secondary equipment in the power system.

[0009] The present utility model adopts the following technical solutions to solve the above technical problems:

[0010] An alternating current electrical connector includes a plug assembly and a socket assembly; the plug assembly includes a plug housing unit and a jack unit; the plug housing unit includes a lower plug housing; the jack units are arranged in pairs; multiple pairs of the jack units are evenly distributed on the plug housing unit along the long axis direction; each jack unit includes 1 sheet metal round pin jack; the sheet metal round pin jack includes a current sheet metal round pin jack; the current sheet metal round pin jack includes a jack support part and a jack insertion part integrally formed by a plate; the jack support part has multiple bend structures that can elastically deform; the paired current sheet metal round pin jacks are arranged opposite to each other with the jack support part as the contact end; the socket assembly includes a socket housing and a plug unit; the plug units are arranged in pairs; multiple pairs of the sheet metal round pin plugs are evenly distributed on the socket housing along the long axis direction; each plug unit includes 1 sheet metal round pin plug; the sheet metal round pin plug includes a plug insertion part and a plug positioning part integrally formed by a plate.

[0011] Further, multiple jack installation structures evenly distributed along the long axis direction are arranged on the lower plug housing; each jack installation structure includes 2 jack installation parts and 1 jack limiting part; the jack limiting part is arranged at the middle position between the 2 jack installation parts; each jack installation part includes a pin hole through hole and a jack positioning table arranged from outside to inside; a plug through groove is arranged at the bottom of the jack installation structure.

[0012] Further, multiple pairs of plug installation positions that are evenly distributed along the long axis direction and are arranged back to back are arranged on the upper part of the socket housing; a through plug through hole is arranged on the plug installation position; multiple plug limiting platforms are arranged on the lower part of the socket housing.

[0013] Further, the jack insertion part is a sleeve structure with both ends open surrounded by a plate; multiple spaced jack insertion part finger-shaped spring pieces are arranged on the circumference of the end of the jack insertion part; the plug insertion part is a sleeve structure surrounded by a plate and having a spherical barrel bottom at the end.

[0014] Further, it also includes an anti-misinsertion sub-component; the anti-misinsertion sub-component includes a plug anti-misinsertion unit and a socket anti-misinsertion unit.

[0015] Further, the plug anti-misinsertion unit includes a plug anti-misinsertion key and a socket locking screw; the plug anti-misinsertion key includes a plug anti-misinsertion key guiding strip and a plug positioning notch; a plurality of spaced-apart, finger-shaped plug anti-misinsertion key buckles are evenly distributed on the outer circumference of the end of the plug anti-misinsertion key guiding strip.

[0016] Further, plug anti-misinsertion key mounting parts for mating and connecting the plug anti-misinsertion key are respectively arranged at both ends of the long axis of the plug lower housing; the plug anti-misinsertion key mounting parts include a plug lower housing guiding center hole and a plug lower housing anti-misinsertion positioning hole; a plurality of the plug lower housing anti-misinsertion positioning holes are evenly distributed on the outer circumference of the plug lower housing guiding center hole.

[0017] Further, the socket anti-misinsertion unit includes a socket anti-misinsertion key and a socket anti-misinsertion mating nut; the socket anti-misinsertion key includes a socket anti-misinsertion key notch and a plurality of circumferentially evenly distributed socket anti-misinsertion key positioning fingers; the socket anti-misinsertion key notch and the plug positioning notch have a circumferentially complementary structure.

[0018] Further, socket anti-misinsertion key mounting parts for mating with the socket anti-misinsertion key are respectively arranged at both ends of the long axis of the socket housing; the socket anti-misinsertion key mounting parts include a socket anti-misinsertion key mounting center hole and a socket anti-misinsertion key mounting limiting groove; a plurality of the socket anti-misinsertion key mounting limiting grooves are circumferentially arranged on the outer circumference of the socket anti-misinsertion key mounting center hole. Further, it also includes 2 extractors; pairs of extractor mounting holes and pairs of extractor buckles are arranged on the extractors; a pair of plug extractor mounting small units are symmetrically arranged at both ends of the long axis of the plug lower housing; the 2 extractors are arranged in mirror symmetry and are respectively connected to the plug extractor mounting small units.

[0019] Compared with the prior art, the present utility model can at least achieve one of the following beneficial effects:

[0020] 1. By using a sheet material to make a sheet metal round pin socket and a sheet metal round pin plug, the processing technology is simple, the material cost and manufacturing cost are greatly reduced, and the installation is convenient.

[0021] 2. One end of the current sheet metal round pin jack of the present utility model is provided with a jack support portion; the multi-bending structure of the jack support portion can stably connect the sheet metal round pin jack to the plug housing unit, greatly improving the reliability of the electrical connection of the current loop of the electrical connector; at the end of the jack insertion portion at the other end of the current sheet metal round pin jack, a plurality of finger-shaped springs of the jack insertion portion are provided; the plurality of finger-shaped springs of the jack insertion portion are easy to tightly connect with the sheet metal round pin plug and form multiple contact points with the sheet metal round pin plug, effectively avoiding the contact failure between electrical contacts under vibration conditions.

[0022] 3. The electrical connector of the present utility model includes a pair of plug units and a socket anti-misinsertion unit arranged in pairs, which can effectively prevent the plug assembly from being inserted into a mismatched socket assembly, improve the use accuracy of the electrical connector, and effectively avoid accidents caused by an open circuit in the current loop.

[0023] 4. A pair of extractors are provided on the plug assembly of the present utility model. By pressing the extractors, the plug assembly can be easily pulled out relative to the socket assembly, greatly improving the convenience of use of the AC electrical connector.

[0024] In the present utility model, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present utility model will be described in the subsequent specification, and some advantages can be made obvious through the specification, or understood by implementing the present utility model. The purpose and other advantages of the present utility model can be achieved and obtained through the content specifically pointed out in the specification and the drawings. Brief Description of the Drawings

[0025] In order to further clearly understand the technical solutions of the present utility model, the present utility model will be described in detail in combination with the following drawings and specific embodiments.

[0026] The drawings are only for the purpose of showing specific technical means and are not considered as a limitation to the present utility model. Throughout the drawings, the same reference signs represent the same parts.

[0027] Figure 1 Schematic diagram of the overall structure of the electrical connector of the present utility model Figure 1 ;

[0028] Figure 2 Schematic diagram of the overall structure of the electrical connector of the present utility model Figure 2 ;

[0029] Figure 3 is Figure 2 Cross-sectional view taken along line A-A in

[0030] Figure 4 is Figure 2 Partial schematic diagram of the cross-sectional view taken along line B-B in

[0031] Figure 5 Schematic diagram of the lower plug housing structure of the present utility model;

[0032] Figure 6 Schematic diagram of the upper plug housing structure of the present utility model;

[0033] Figure 7 Partial structure schematic diagram of the plug assembly of the present utility model;

[0034] Figure 8 Schematic diagram of the sheet metal round pin socket structure of the present utility model;

[0035] Figure 9 Schematic diagram of the wire pressing spring structure of the present utility model;

[0036] Figure 10 Schematic diagram of the current pin hole auxiliary spring structure of the present utility model;

[0037] Figure 11 Schematic diagram of the extraction aid structure of the present utility model;

[0038] Figure 12 Overall structure schematic diagram of the socket assembly of the present utility model;

[0039] Figure 13 Schematic diagram of the socket housing structure of the present utility model Figure 1 ;

[0040] Figure 14 Schematic diagram of the socket housing structure of the present utility model Figure 2 ;

[0041] Figure 15 Schematic diagram of the sheet metal round pin plug structure of the present utility model;

[0042] Figure 16 Structure and installation schematic diagram of the plug anti-misinsertion unit of the present utility model;

[0043] Figure 17 Installation schematic diagram of the electrical connector in the use state of the present utility model.

[0044] Reference numerals:

[0045] 1. Plug assembly; 11. Plug housing unit; 111. Lower plug housing; 1111. Jack mounting portion; 11111. Pressing spring positioning platform; 11112. Pin hole through hole; 11113. Jack positioning platform; 1112. Jack limiting portion; 11121. Jack support plate; 1113. Extractor buckle platform; 1114. Extractor mounting shaft; 1115. Plug anti-misinsertion key mounting portion; 11151. Lower plug housing orientation center hole; 11152. Lower plug housing anti-misinsertion positioning hole; 1116. Pressing spring limiting groove; 1117. Lower plug housing clamping hole; 112. Upper plug housing; 1121. Button mounting hole; 1122. Upper plug housing wire passing hole; 1123. Upper plug housing buckle; 1124. Jack stop; 12. Button; 13. Jack unit; 131. Current sheet metal round pin jack; 1311. Jack support portion; 13111. Jack support portion limiting rib; 13112. Jack support strengthening portion; 13113. Jack support positioning portion; 1312. Jack insertion portion; 13121. Jack insertion portion finger spring; 131211. Finger spring guiding portion; 131-1. Voltage sheet metal round pin jack; 132. Pressing spring; 1321. Pressing spring force application portion; 1322. Pressing spring positioning portion; 1323. Pressing spring fixing portion; 13231. Fixing portion claw; 132311. Fixing portion buckle platform; 132312. Fixing portion positioning platform; 133. Current pin hole auxiliary spring; 1331. Auxiliary spring support plate; 13311. Support plate positioning portion; 1332. Support plate bent plate; 13321. Support plate bending strengthening portion; 14. Plug anti-misinsertion unit; 141. Plug anti-misinsertion key; 1411. Plug anti-misinsertion key orientation strip; 14111. Plug anti-misinsertion key buckle; 1412. Plug positioning notch; 142. Plug and socket locking screw; 15. Extractor; 151. Extractor support plate; 152. Extractor rib plate; 1521. Extractor mounting hole; 1522. Extractor buckle;

[0046] 2. Socket assembly; 21. Socket housing; 211. Plug through-hole; 212. Socket external wire crimping screw through-hole; 213. Conductive nut strip installation part; 214. Conductive nut strip buckle; 215. Plug installation position; 216. Socket anti-misinsertion key installation part; 2161. Socket anti-misinsertion key installation center hole; 2162. Socket anti-misinsertion key installation limit groove; 217. Plug limit platform; 218. Support plate spring limit groove; 22. Plug unit; 221. Sheet metal round pin plug; 2211. Plug insertion part; 2212. Plug positioning part; 22121. Plug external wire crimping screw through-hole; 22122. Plug positioning support plate; 221221. Support plate spring; 22123. Support plate limit part; 222. Plug external wire locking small unit; 23. Socket anti-misinsertion unit; 231. Socket anti-misinsertion key; 2311. Socket anti-misinsertion key positioning finger; 2312. Socket anti-misinsertion key notch; 232. Socket anti-misinsertion mating nut; 24. Conductive nut strip;

[0047] 100. Printed circuit board; 200. Panel. Detailed implementation manners

[0048] The preferred embodiments of the present invention will be specifically described in conjunction with the accompanying drawings. Among them, the drawings form a part of the present invention and, together with the embodiments of the present invention, are used to explain the principle of the present invention; they are not used to limit the scope of the present invention.

[0049] First, it is stipulated that:

[0050] 1. Up and down directions: The plug assembly 1 is above and the socket assembly 2 is below;

[0051] 2. End: The outermost / most distal part of the part structure is the end of the part;

[0052] 3. Inside and outside: For a part / unit / component, the part close to the center of the structure is inside, and the part close to the outer side wall is outside;

[0053] 4. Long axis: For a part / unit / component, the direction of the longer geometric dimension is the long axis;

[0054] Next, in conjunction with Figures 1 - 17 , the technical solution of the electrical connector of the present invention will be described with specific embodiments:

[0055] An electrical connector includes a plug assembly 1 and a socket assembly 2.

[0056] As Figure 1 and Figure 2As shown, the plug assembly 1 includes a plug housing unit 11, a button 12, a jack unit 13, a plug anti-misinsertion unit 14, and a plug extractor 15; every two jack units 13 form a pair, and the two paired jack units 13 are arranged in a direction angled with respect to the long axis. Specifically, this angle is a 90° angle or an acute angle; multiple pairs of jack units 13 are evenly distributed on the plug housing unit 11 along the long axis direction.

[0057] Each jack unit 13 includes a sheet metal round pin jack and a wire pressing spring piece 132.

[0058] Combined with the specific uses of the peripheral device and the electrical connector, the sheet metal round pin jack of the jack unit 13 includes multiple pairs of current sheet metal round pin jacks 131 / multiple pairs of voltage sheet metal round pin jacks 131-1 / a combination of any pair of current sheet metal round pin jacks 131 and any pair of voltage sheet metal round pin jacks 131-1.

[0059] As Figure 7 shown, in this embodiment, the jack unit 13 includes 8 pairs of current sheet metal round pin jacks 131 and 5 pairs of voltage sheet metal round pin jacks 131-1. The 8 pairs of current sheet metal round pin jacks 131 and 5 pairs of voltage sheet metal round pin jacks 131-1 are evenly distributed on the plug housing unit 11 along the long axis direction.

[0060] As Figure 1 and Figure 2 shown, the socket assembly 2 includes a socket housing 21, a plug unit 22, a socket anti-misinsertion unit 23, and a conductive nut strip 24. Every two plug units 22 form a pair, and multiple pairs of plug units 22 are evenly distributed on the socket housing 21 along the long axis direction. Each plug unit 22 includes a sheet metal round pin plug 221 and a small plug external wire locking unit 222; the small plug external wire locking unit 222 can firmly connect the sheet metal round pin plug 221 to the socket housing 21.

[0061] Among them, the sheet metal round pin plug 221 and the sheet metal round pin jack are both made of a plate, preferably a metal plate.

[0062] As Figure 16 shown, in the electrical connector of this embodiment, the plug anti-misinsertion unit 14 and the socket anti-misinsertion unit 23 that are structurally matched and can be firmly connected together form an anti-misinsertion sub-assembly.

[0063] As Figure 5 and Figure 6 shown, the plug housing unit 11 of this embodiment includes a plug lower housing 111 and a plug upper housing 112.

[0064] Preferably, both the plug lower housing 111 and the plug upper housing 112 are frame structural members made of modified nylon material by injection molding and having a shell cavity part.

[0065] AsFigure 5 As shown, the lower plug housing 111 includes an upper cavity of the lower plug housing and a lower cavity of the lower plug housing.

[0066] The lower plug housing 111 is evenly provided with a plurality of lower plug housing locking holes 1117 on the inner side of the upper end periphery of the upper cavity of the lower plug housing, and the lower plug housing locking holes 1117 penetrate through to the lower cavity of the lower plug housing. Correspondingly, the upper plug housing 112 includes an upper cavity of the upper plug housing and a lower cavity of the upper plug housing. The upper plug housing 112 is evenly provided with upper plug housing buckles 1123 on the outer side of the lower end periphery of the lower cavity of the upper plug housing. By inserting the upper plug housing buckles 1123 into the lower plug housing locking holes 1117, the lower plug housing 111 can be buckled and connected to the upper plug housing 112 upward.

[0067] As Figure 2 shown, the upper cavity of the lower plug housing includes a plurality of jack mounting structures evenly distributed along the long axis direction; each jack mounting structure includes 2 jack mounting parts 1111 and 1 jack limiting part 1112. One jack limiting part 1112 is arranged between the 2 jack mounting parts 1111. Each jack mounting part 1111 includes a pin hole through hole 11112 and a jack positioning table 11113 arranged from outside to inside; a plug through groove is arranged at the bottom of the jack mounting structure.

[0068] The upper cavity of the lower plug housing further includes a small unit for installing a plug extractor, a plug anti-misinsertion key mounting part 1115, and a wire pressing spring sheet limiting groove 1116. The small unit for installing a plug extractor includes a pair of extractor buckling platforms 1113 and a pair of extractor mounting shafts 1114 for installing the extractor 15.

[0069] As Figure 2 shown, the A-A direction is the connecting line direction of the central positions of the 2 jack units 13; this direction is the axis direction of the jack mounting part.

[0070] Along the axis direction of the jack mounting part, each jack mounting part 1111 located in the upper part of the lower plug housing 111 is provided with a wire pressing spring sheet positioning table 11111 at the outer end and a jack positioning table 11113 at the inner end; a pin hole through hole 11112 is arranged between the wire pressing spring sheet positioning table 11111 and the jack positioning table 11113, and a jack limiting part 1112 is arranged between the two opposite jack positioning tables 11113. The pin hole through hole 11112 is a stepped through hole, and among them, the through hole at the bottom is the pin hole passing hole.

[0071] Specifically, the jack limiting part 1112 is a groove structure, and jack support plates 11121 are respectively arranged in the axial direction of the jack installation part at the groove bottom of the jack limiting part 1112. Communicating H-shaped plug passing grooves are arranged between two opposite jack support plates 11121 and between the jack support plates 11121 and the side groove walls in the long axis direction of the jack limiting part 1112. The plug passing grooves can enable the matching structure of the socket housing 21 to pass through.

[0072] One pressing spring piece limiting groove 1116 is arranged outside each pressing spring piece positioning table 11111. The pressing spring piece limiting groove 1116 penetrates through to the lower cavity of the plug lower housing to limit the position of the pressing spring piece 132 in the plug lower housing 111.

[0073] As Figure 5 shown, through plug anti-misinsertion key installation parts 1115 are symmetrically arranged in the middle of the two ends of the long axis of the plug lower housing 111 to position and connect the plug anti-misinsertion unit 14.

[0074] Specifically, the plug anti-misinsertion key installation part 1115 includes a plug lower housing anti-misinsertion orientation center hole 11151 arranged at the central position and a plurality of plug lower housing anti-misinsertion positioning holes 11152 evenly distributed around the plug lower housing orientation center hole 11151.

[0075] As Figure 5 shown, a pair of ejector clip platforms 1113 and a pair of ejector installation shafts 1114 are symmetrically arranged on the side edges of the two ends of the long axis of the plug lower housing 111 for installing the ejector 15.

[0076] As Figure 6 shown, the cavity frame structure of the plug upper housing 112 in this embodiment includes plug upper housing installation parts corresponding to the positions of the jack installation parts 1111 one by one. Each plug upper housing installation part includes a button installation hole 1121, a plug upper housing wire passing hole 1122, and a jack stop 1124 arranged from outside to inside along the axis direction of the jack installation part. The button installation holes 1121 are evenly distributed on the inner edge of the cavity of the plug upper housing 112.

[0077] The button installation holes 1121, the pressing spring piece positioning tables 11111, the plug upper housing wire passing holes 1122, the pin hole passing holes 11112, the jack stops 1124, and the jack positioning tables 11113 are in one-to-one correspondence.

[0078] In the installed state, the lower plug housing 111 is snap-connected upward to the lower end of the upper plug housing 112, and the button 12 is inserted and limitedly connected from top to bottom at the button mounting hole 1121; the jack unit 13 is elastically inserted and connected at the jack mounting portion 1111, and the jack stop 1124 positions the jack unit 13; the plug anti-misinsertion unit 14 is directionally limitedly connected at the plug anti-misinsertion key mounting portion 1115; the extraction aid 15 is movably connected to the extraction aid mounting shaft 1114 and is snap-connected to the lower plug housing 111 at the extraction aid snap tab 1113.

[0079] The current sheet metal round pin jack 131 and / or the voltage sheet metal round pin jack 131-1 are elastically press-fitted and connected to the cavity space of the jack mounting portion 1111 at the jack positioning table 11113. The wire pressing spring piece 132 is buckled at the wire pressing spring piece positioning table 11111 and is limited by the wire pressing spring piece limiting groove 1116, so as to position the sheet metal round pin jack. The jack stop 1124 and the jack support plate 11121 also limit the sheet metal round pin jack.

[0080] Specifically, the wire pressing spring piece 132 of this embodiment is made of an elastic metal plate member.

[0081] As Figure 9 shown, the wire pressing spring piece 132 includes a wire pressing spring piece force application portion 1321, a wire pressing spring piece positioning portion 1322, and a wire pressing spring piece fixing portion 1323 arranged in sequence; the wire pressing spring piece positioning portion 1322 is a bent structure between the wire pressing spring piece force application portion 1321 and the wire pressing spring piece fixing portion 1323, and the included angle between the wire pressing spring piece force application portion 1321 and the wire pressing spring piece fixing portion 1323 is less than 90°.

[0082] Preferably, according to the specific structure inside the lower plug housing 111, the included angle between the wire pressing spring piece force application portion 1321 and the wire pressing spring piece fixing portion 1323 of the wire pressing spring piece 132 in this embodiment is 55° in the free state.

[0083] Preferably, for the convenience and stability of the installation of the wire pressing spring piece fixing portion 1323, a notch is opened at the end of the wire pressing spring piece fixing portion 1323 to form two fixing portion claws 13231.

[0084] Preferably, the two fixing part claws 13231 of this embodiment are mirror-symmetrical structures; at the lower end of the outer part of each fixing part claw 13231, there is one fixing part buckle platform 132311. The distance between the outer ends of the two fixing part buckle platforms 132311 is greater than the width of the wire pressing spring piece limiting groove 1116, so that the two fixing part claws 13231 can be elastically pressed into the wire pressing spring piece limiting groove 1116, and after the fixing part buckle platform 132311 enters the lower cavity of the plug lower shell, it rebounds and is fixed on the plug lower shell 111; in the middle of the inner part of each fixing part claw 13231, there is a fixing part positioning platform 132312 extending outward. The lower end surface of the fixing part positioning platform 132312 is limited on the bottom surface of the upper cavity of the plug lower shell of the plug lower shell 111. On the one hand, it can strengthen the structural strength of the fixing part claw 13231, and on the other hand, it can limit the lower limit position of the wire pressing spring piece 132 in height.

[0085] In the installed state, the wire pressing spring piece 132 is buckled at the wire pressing spring piece positioning platform 11111 through the wire pressing spring piece positioning part 1322. The fixing part claw 13231 on the outside of the wire pressing spring piece 132 is limited in the wire pressing spring piece limiting groove 1116, and the fixing part buckle platform 132311 is fixed in the lower cavity of the plug lower shell under the wire pressing spring piece limiting groove 1116; the inner side of the wire pressing spring piece 132 can press or release the external wire of the sheet metal round pin jack through the pressing or lifting of the button 12.

[0086] As Figure 6 and Figure 7 As shown, on the upper part of the plug upper shell 112 of this embodiment, there are 13 pairs of sheet metal round pin jack mounting positions with the same structure, among which 5 pairs are used to limit and connect 5 pairs of voltage sheet metal round pin jacks 131-1, and the other 8 pairs are used to limit and connect 8 pairs of current sheet metal round pin jacks 131.

[0087] The sheet metal round pin jack of this embodiment is an integrally formed elastic metal sheet structural member. Taking the current sheet metal round pin jack 131 as an example, the detailed structure of the sheet metal round pin jack will be introduced.

[0088] As Figure 8 shown, the current sheet metal round pin jack 131 is integrally formed by a metal sheet, including a jack support part 1311 and a jack insertion part 1312. The jack support part 1311 can be elastically deformed and has a plurality of bending structures, and the jack insertion part 1312 is an annular columnar structure surrounded by a sheet.

[0089] Specifically, the jack support portion 1311 of this embodiment is a bent plate with three bent portions made according to the structure of the sheet metal round pin jack installation position. The jack support portion 1311 includes a jack support portion limiting rib 13111, a jack support strengthening portion 13112, and a jack support positioning portion 13113. The jack support portion 1311 can be elastically clamped within the sheet metal round pin jack installation position.

[0090] The inner end of the jack support portion 1311 is connected to the jack insertion portion 1312. The jack support portion 1311 is limited within the jack limiting portion 1112. There is a redundant space between the lower end of the jack support portion 1311 and the upper end surface of the jack support plate 11121, facilitating the unobstructed connection of the current sheet metal round pin jack 131 to the plug upper housing 112.

[0091] The jack support positioning portion 13113 is the first bent portion of the jack support portion 1311. On both sides of the jack support positioning portion 13113 are respectively a first bent inner plate and a first bent outer plate that are parallel to each other. The inner distance between the first bent inner plate and the first bent outer plate is not less than the thickness of the jack positioning platform 11113. This design enables the jack support portion 1311 to be easily clamped onto the jack positioning platform 11113 and fit against the two side walls of the jack positioning platform 11113, while being convenient for installation and beneficial to the stable installation position of the current sheet metal round pin jack 131.

[0092] The end of the first bent outer plate is connected to the jack insertion portion 1312. A plurality of jack support portion limiting ribs 13111 parallel to the edge of the jack support positioning portion 13113 are arranged on the outer side plate surface of the first bent outer plate facing the jack insertion portion 1312; the end of the first bent inner plate is connected to the second bent portion of the jack support portion 1311. The end of the second bent portion is the jack support strengthening portion 13112. The jack support strengthening portion 13112 itself is the third bent portion of the jack support portion 1311. The bending direction of the jack support strengthening portion 13112 points towards the first bent inner plate, facilitating the smooth entry of the current sheet metal round pin jack 131 into the jack installation structure in an arc shape.

[0093] Specifically, the plurality of jack support portion limiting ribs 13111 are clamping structures arranged in parallel along the axis direction of the jack insertion portion 1312 and can be made by stamping and extrusion processes. The end of the wire pressing spring piece applying force portion 1321 of the wire pressing spring piece 132 can be stably limited between any two adjacent jack support portion limiting ribs 13111 to reliably limit the position of the current sheet metal round pin jack 131.

[0094] Preferably, there are 2 jack support portion limiting ribs 13111 provided on the jack support portion 1311 of this embodiment.

[0095] Such as Figure 7 and Figure 8As shown, an outer arc portion is formed on the inner side of the jack support reinforcement portion 13112. The jack support reinforcement portion 13112 can not only enhance the structural stiffness of the jack support portion 1311, achieving the effect of enhancing the elastic damping of the current sheet metal round pin jack 131, but also enable the two current sheet metal round pin jacks 131 opposite to each other along the axis direction of the jack installation portion to smoothly contact and form multiple contact points on the outer arc portion of the jack support reinforcement portion 13112 by elasticity when the socket assembly 2 is separated from the plug assembly 1, so that the current circuit is in a short - circuit state and does not open, thus avoiding electric shock accidents.

[0096] The jack insertion portion 1312 is formed by bending a sheet of the extended portion of the jack support portion 1311 into a sleeve structure with both ends open. The outer diameter of the jack insertion portion 1312 is smaller than the aperture of the pin hole through - hole 11112 and larger than the aperture of the pin hole passing - through hole, so that the jack insertion portion 1312 can be easily inserted and connected in the pin hole through - hole 11112 and positioned at the shaft hole platform of the pin hole passing - through hole of the pin hole through - hole 11112 at the end; a plurality of spaced - apart jack insertion portion finger - shaped spring pieces 13121 are circumferentially arranged at the end of the jack insertion portion 1312; the plurality of jack insertion portion finger - shaped spring pieces 13121 are spaced apart, which is easy to form multiple contact points with the sheet metal round pin plug 221, effectively avoiding the intermittent contact failure between electrical contacts.

[0097] Preferably, 4 equally - spaced and circumferentially - distributed jack insertion portion finger - shaped spring pieces 13121 are provided at the end of the jack insertion portion 1312 in this embodiment. The 4 jack insertion portion finger - shaped spring pieces 13121 enclose into a converging conical tube shape. The end of the jack insertion portion finger - shaped spring piece 13121 turns outwards to form a finger - shaped spring piece guiding portion 131211; the maximum outer diameter of the finger - shaped spring piece guiding portion 131211 is smaller than the outer diameter of the jack insertion portion 1312; this design not only facilitates the insertion - type connection of the jack insertion portion 1312 in the pin hole through - hole 11112, but also can increase the structural strength of the jack insertion portion finger - shaped spring piece 13121.

[0098] In the installed state, the jack insertion portions 1312 of the two current sheet metal round pin jacks 131 in a group are respectively inserted at the outer jack installation portion 1111, and the two jack support portions 1311 are oppositely arranged with the jack support reinforcement portion 13112 as the contact end and limited in the same jack limiting portion 1112.

[0099] Specifically, the jack insertion part 1312 of the sleeve structure on the current sheet metal round pin jack 131 is limitedly connected to the pin hole through hole 11112 of the plug lower housing 111; the jack support positioning part 13113 on the jack support part 1311 of the current sheet metal round pin jack 131 is limited at the upper end face of the jack positioning table 11113, and the end part of the pressing spring piece applying force part 1321 of the pressing spring piece 132 is limited between the two jack support part limiting ribs 13111; by pressing down or lifting the button 12, the pressing spring piece 132 can press or release the external wire of the current sheet metal round pin jack 131.

[0100] Preferably, each current sheet metal round pin jack 131 is matched and connected with one current pin hole auxiliary spring piece 133.

[0101] As Figure 3 、 Figure 7 and Figure 10 shown, specifically, the current pin hole auxiliary spring piece 133 is supported by an elastic metal sheet, and the structure shapes the part of the jack support part 1311 of the current sheet metal round pin jack 131 far from the jack insertion part 1312, including an auxiliary spring piece support plate 1331 and a support plate bent plate 1332. A support plate positioning part 13311 is arranged at the distal end of the auxiliary spring piece support plate 1331 to increase the contact area with the jack support positioning part 13113; a support plate bending strengthening part 13321 is arranged at the distal end of the support plate bent plate 1332 to shape the jack support strengthening part 13112. The current pin hole auxiliary spring piece 133 is attached to the part of the jack support part 1311 far from the jack insertion part 1312, and can enhance the elastic damping of the current sheet metal round pin jack 131.

[0102] As Figure 7 shown, compared with the current sheet metal round pin jack 131, the voltage sheet metal round pin jack 131-1 for the voltage circuit only retains the part of the structure of the first bent inner plate from the jack insertion part 1312 to the jack support positioning part 13113 on the current sheet metal round pin jack 131 in terms of structure. This design takes into account that the voltage circuit does not require short-circuiting, and on the premise of realizing the function, can simplify the structure of the sheet metal round pin jack and save production costs.

[0103] As Figure 4 and Figure 16 shown, the plug anti-misinsertion unit 14 of this embodiment includes a plug anti-misinsertion key 141 and a plug and socket locking screw 142. The plug anti-misinsertion key 141 is connected to the plug anti-misinsertion key installation part 1115 of the plug lower housing 111; the plug and socket locking screw 142 is connected to the socket anti-misinsertion unit 23.

[0104] Specifically, the anti-misinsertion key 141 of the plug is a hexahedral columnar structure with a through hole. The length of the plug and socket locking screw 142 is greater than that of the anti-misinsertion key 141 of the plug, and the diameter of the through hole of the anti-misinsertion key 141 of the plug is greater than the major diameter of the threaded part of the plug and socket locking screw 142. The through hole of the anti-misinsertion key 141 of the plug is designed to match the position of the anti-misinsertion and orientation center hole of the anti-misinsertion key installation part 1115.

[0105] Among them, the anti-misinsertion key 141 of the hexahedral columnar structure includes a through hole of the anti-misinsertion key of the plug, an anti-misinsertion key orientation strip 1411 of the plug, and a plug positioning notch 1412. The socket locking screw 142 can pass through the through hole of the anti-misinsertion key of the plug and be connected to the socket assembly 2.

[0106] Specifically, the anti-misinsertion key orientation strip 1411 of the plug is a plurality of finger-like structures that are opened at the first end of the anti-misinsertion key 141 of the plug, extend outward, and are evenly distributed at circumferences. The structure of the anti-misinsertion key orientation strip 1411 matches the design of the anti-misinsertion positioning hole on the anti-misinsertion key installation part 1115. The anti-misinsertion key orientation strip 1411 can enhance the elasticity of the anti-misinsertion key 141 of the plug, facilitating equal potential and disassembly and assembly. On the outer side of the end of each anti-misinsertion key orientation strip 1411, there is an anti-misinsertion key buckle 14111 of the plug; the outwardly protruding anti-misinsertion key buckle 14111 can be stably buckled on the lower shell 111 of the plug, thereby enhancing the stability of the connection between the anti-misinsertion key 141 of the plug and the lower shell 111 of the plug.

[0107] Specifically, the hexahedral columnar structure at the second end of the anti-misinsertion key 141 of this embodiment is cut into a sector shape, and the cut part of the sector cut structure forms a plug positioning notch 1412. The structure of the plug positioning notch 1412 is designed to match the corresponding structure on the anti-misinsertion unit 23 of the socket.

[0108] The extractor 15 of this embodiment is a sheet metal structural part injection-molded from modified nylon material. Two extractors 15 are symmetrically arranged opposite to each other and are respectively connected to both ends of the long axis of the lower shell 111 of the plug; specifically, they are connected at the small unit for installing the extractor of the plug.

[0109] Such as Figure 5 and Figure 11As shown in the figure, the extractor 15 includes an extractor support plate 151 and extractor rib plates 152. The two extractor rib plates 152 are mirror - symmetrically arranged on the extractor support plate 151, specifically located at both ends of the side facing the central part of the lower housing 111 of the plug. The structure is narrow at the top and wide at the bottom, which is conducive to the extractor 15 generating elastic deformation during counter - pressing. A pair of extractor mounting holes 1521 are symmetrically arranged at the lower part of the extractor reinforcing rib 152; the extractor mounting holes 1521 are designed to match the extractor mounting shafts 1114 on the lower housing 111 of the plug. A pair of extractor buckles 1522 are symmetrically arranged in the middle of the extractor reinforcing rib 152; the extractor buckles 1522 are structurally matched with the extractor buckle platforms 1113 on the lower housing 111 of the plug, and the extractor buckles 1522 can be buckled at the extractor buckle platforms 1113 to limit - connect the extractor 15 to the lower housing 111 of the plug.

[0110] As Figure 3 and Figure 12 shown, the socket housing 21 of the socket assembly 2 has a cavity structure. Along the long - axis direction in the upper part of the cavity structure of the socket housing 21, a plurality of plug mounting positions 215 are arranged. The plug mounting positions 215 on the socket housing 21 correspond one - to - one with the jack mounting parts 1111 on the lower housing 111 of the plug. At each plug mounting position 215, 2 plug units 22 are symmetrically connected along the axis direction of the jack mounting part. A pair of socket anti - misinsertion units 23 and a pair of conductive nut bars 24 are respectively mirror - symmetrically arranged at both ends of the socket housing 21 in the long - axis direction.

[0111] The socket housing 21 is a frame - structure part formed by injection - molding of modified nylon material.

[0112] As Figure 12 , Figure 13 and Figure 14 shown, the socket housing 21 is also provided with a plug through - hole 211, a socket external - wire crimping screw through - hole 212, a conductive nut bar mounting part 213, a conductive nut bar buckle 214, a socket anti - misinsertion key mounting part 216, a plug limiting platform 217, and a support - plate spring limiting groove 218.

[0113] As Figure 13 shown, the upper part of the socket housing 21 is provided with a socket upper - shell cavity. The socket upper - shell cavity includes a plurality of pairs of plug mounting positions 215 evenly distributed along the long - axis direction; the plug mounting positions 215 are of an open - slot structure. The openings of the paired plug mounting positions 215 face away from each other and are connected together, jointly forming an H - shaped rib - plate structure corresponding to the H - shaped plug - passing slot on the jack limiting part 1112. The paired plug mounting positions 215 can be limited in the plug - passing slot.

[0114] On the upper edge of the groove bottom of each plug mounting position 215, a pair of plug through holes 211 penetrating the cavity of the socket upper shell are arranged along the axis direction of the jack mounting part; the sheet metal round pin plug 221 can pass through the plug through holes 211; on the two side walls of the plug mounting position 215 along the long axis direction, a pair of sunken support plate spring limit grooves 218 are respectively arranged at the lower part. The positions of the plug through holes 211 correspond one by one to the plug upper shell wire through holes 1122 and the pin hole through holes 11112 on the plug housing unit 11.

[0115] At the lower part of the socket housing 21, a socket external wire crimping screw through hole 212 is arranged along the axis direction of the jack mounting part, which is used to lock the external wire and the sheet metal round pin plug 221 and fixedly connect them to the socket housing 21; at the lower part of the socket housing 21 below the socket external wire crimping screw through hole 212, a plug limit platform 217 is arranged. The positions of the plug through holes 211 correspond one by one to the plug limit platform 217.

[0116] The socket anti-misinsertion key mounting parts 216 are arranged at both ends of the long axis of the socket housing 21; the positions and structures of the socket anti-misinsertion key mounting parts 216 correspond one by one to the plug anti-misinsertion key mounting parts 1115 on the plug housing unit 11, and specifically include a socket anti-misinsertion key mounting center hole 2161 and a plurality of socket anti-misinsertion key mounting limit grooves 2162 circumferentially arranged on the outer periphery of the socket anti-misinsertion key mounting center hole 2161.

[0117] The conductive nut strip mounting part 213 is a sunken structure, specifically located at the lower parts of both ends of the long axis of the socket housing 21 and corresponding to the positions of the socket anti-misinsertion key mounting parts 216, and is used to accommodate the conductive nut strip 24. A plurality of conductive nut strip buckles 214 are arranged in pairs on the outer edge of the conductive nut strip mounting part 213; the conductive nut strip 24 is limited in the conductive nut strip mounting part 213 and stably fixed on the socket housing 21 by the conductive nut strip buckles 214.

[0118] Preferably, the sheet metal round pin plug 221 in this embodiment is a structural part processed from a metal plate, and the material is the same as that of the sheet metal round pin jack.

[0119] As Figure 15 shown, the sheet metal round pin plug 221 includes an integrally formed plug insertion part 2211 and a plug positioning part 2212. The plug insertion part 2211 can be inserted and connected into the jack insertion part 1312 and is stably fixed by a plurality of jack insertion part finger-shaped spring pieces 13121.

[0120] Specifically, the plug insertion part 2211 is a round pin structure formed by bending a plate, specifically a sleeve structure with a spherical head and a cylindrical bottom at the end; the outer diameter of the round pin of the sheet metal round pin plug 221 has a clearance fit with the inner diameter of the plug through hole 211, has a clearance fit with the inner diameter of the insertion part 1312 of the current sheet metal round pin socket 131, and is greater than the minimum inner diameter of the closed-end cone cylinder formed by enclosing the finger-shaped spring pieces 13121 of the insertion part of the socket.

[0121] This design enables the sheet metal round pin plug 221 to be easily inserted into the socket housing 21, inserted into the insertion part 1312 of the socket, and stably fixed by the closed-end cone cylinder formed by enclosing the finger-shaped spring pieces 13121 of the insertion part of the socket, thereby ensuring a firm connection between the sheet metal round pin plug 221 and the sheet metal round pin socket and greatly improving the working stability of the electrical connector.

[0122] Specifically, a support plate limiting part 22123 is provided at the end of the plug positioning part 2212. The support plate limiting part 22123 can be limited at the plug limiting platform 217 to ensure the stable position of the plug unit 22 relative to the socket housing 21. A plug external wire crimping screw through hole 22121 is provided at the middle position of the plug positioning part 2212; plug positioning support plates 22122 are symmetrically arranged on both sides of the plug positioning part 2212 at the connection with the plug insertion part 2211; the outer distance between the opposite plug positioning support plates 22122 is not greater than the axial width of the socket limiting part 1112 to facilitate the insertion of the plug unit 22 into the socket limiting part 1112.

[0123] Further preferably, a support plate elastic piece 221221 is provided on the plug positioning support plate 22122 in the direction towards the support plate limiting part 22123; the paired support plate elastic pieces 221221 are arranged in an outward V shape. The maximum solid width between the support plate elastic pieces 221221 is greater than the axial width of the socket limiting part 1112, so that the plug unit 22 can be inserted into the socket upper shell cavity of the socket housing 21 when the support plate elastic pieces 221221 are deformed by force, and after insertion, the support plate elastic pieces 221221 rebound into the support plate elastic piece limiting groove 218, so that even in the working state when encountering vibration, the plug unit 22 cannot fall off from the socket housing 21, maintaining the working stability of the electrical connector.

[0124] According to the specific installation structure of the sheet metal round pin plug 221 on the socket housing 21, the specific structure of the plug positioning part 2212 in the sheet metal round pin plug 221 can be different. In this embodiment, the plate lengths of the plug positioning parts 2212 of the two rows of sheet metal round pin plugs 221 are different, and the positions of the plug external wire crimping screw through holes 22121 are different.

[0125] Such as Figure 1 and Figure 12As shown, the plug unit 22 further includes a plug external wire locking unit 222. The plug external wire locking unit 222 of this embodiment includes a screw, a nut, and a spring washer; the plug external wire locking unit 222 can firmly connect the external wire, the sheet metal round pin plug 221, and the socket housing 21 together.

[0126] As Figure 16 shown, the socket anti-misinsertion unit 23 includes a socket anti-misinsertion key 231 and a socket anti-misinsertion mating nut 232. The socket anti-misinsertion mating nut 232 is a sleeve structure with internal threads. The internal threads of the socket anti-misinsertion mating nut 232 are designed to match the plug and socket locking screw 142.

[0127] Specifically, the socket anti-misinsertion key 231 has a stepped bushing structure with a through hole, and the internal through hole is the socket anti-misinsertion key through hole. The first end of the socket anti-misinsertion key 231 is a small-diameter part, and a socket anti-misinsertion key notch 2312 is provided at the end of the small-diameter part. On the stepped root of the stepped bushing structure of the socket anti-misinsertion key 231, specifically on the outer circumference of the root of the small-diameter part of the socket anti-misinsertion key 231, there are a plurality of circumferentially evenly distributed and spaced socket anti-misinsertion key positioning fingers 2311.

[0128] The socket anti-misinsertion key 231 is limited at the socket anti-misinsertion key installation part 216 at the long axis end of the socket housing 21 through a stepped structure and is fixed by the conductive nut strip 24. The socket anti-misinsertion mating nut 232 is a sleeve structure, and the socket anti-misinsertion mating nut 232 can be integrally formed / pressed into the socket anti-misinsertion key through hole at the first end of the socket anti-misinsertion key 231. The large-diameter part at the second end of the socket anti-misinsertion key 231 is a cylinder with a radius larger than the socket anti-misinsertion orientation center hole, and socket anti-misinsertion key positioning fingers 2311 that can be matched and engaged in the socket anti-misinsertion positioning holes are evenly distributed on the outer circumference of the large-diameter part cylinder of the socket anti-misinsertion key 231.

[0129] Specifically, the small-diameter part of the socket anti-misinsertion key 231 of this embodiment is a partial cylinder that matches the six-sided cylinder structure of the plug anti-misinsertion key 141, specifically a sector; a socket anti-misinsertion key notch 2312 is provided on the cylinder structure of the socket anti-misinsertion key 231.

[0130] Preferably, the socket anti-misinsertion key 231 and the plug anti-misinsertion key 141 of this embodiment have a structure that is circumferentially complementary and forms a complete cylinder when closed. Specifically, both the socket anti-misinsertion key notch 2312 and the plug positioning notch 1412 are sectors with an opening of 180°, so that the socket anti-misinsertion key 231 and the plug anti-misinsertion key 141 are matched and docked to form a complete cylinder structure. Through the installation position and specific structure, the socket anti-misinsertion key 231 and the plug anti-misinsertion key 141 can be uniquely matched to achieve the technical effect of preventing misinsertion.

[0131] The anti-misinsertion unit 14 of the plug and the anti-misinsertion unit 23 of the socket are matched, which can ensure the uniqueness of the paired use of the plug assembly 1 and the socket assembly 2, and effectively prevent serious accidents caused by misinsertion.

[0132] As Figure 12 shown, the conductive nut strip 24 is provided with a through hole for installing the conductive nut strip of the anti-misinsertion unit 23 of the socket, and the position of the through hole for the conductive nut strip is matched with the installation center hole 2161 of the anti-misinsertion key of the socket. A pair of conductive nut strips 24 are symmetrically arranged and fixedly connected to both ends of the long axis of the socket housing 21.

[0133] As Figure 4 and Figure 16 shown, in the installed state, the anti-misinsertion unit 23 of the socket passes upward through the socket housing 21 through the installation part 216 of the anti-misinsertion key of the socket; the anti-misinsertion unit 14 of the plug passes downward through the lower housing 111 of the plug through the installation part 1115 of the anti-misinsertion key of the plug; the plug of the anti-misinsertion unit 14 of the plug and the socket locking screw 142 are locked at the anti-misinsertion mating nut 232 of the anti-misinsertion unit 23 of the socket, so as to fixedly connect the plug assembly 1 and the socket assembly 2.

[0134] The above is only the preferred specific implementation mode of the present invention; however, the protection scope of the present invention is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. At the same time, all devices equipped with this device to expand the application field and produce compound technical effects belong to the protection scope of the present invention.

Claims

1. An electrical connector, characterized in that: It comprises a plug assembly (1) and a socket assembly (2); The plug assembly (1) comprises a plug housing unit (11) and a socket unit (13); the plug housing unit (11) comprises a plug lower housing (111); the socket units (13) are arranged in pairs; a plurality of pairs of the socket units (13) are evenly connected to the plug housing unit (11) along the longitudinal direction; each of the socket units (13) comprises a sheet metal round pin socket; the sheet metal round pin socket comprises a current sheet metal round pin socket (131); the current sheet metal round pin socket (131) comprises a socket support portion (1311) and a socket plug-in portion (1312) integrally formed of a sheet material; the socket support portion (1311) has a plurality of elastically deformable bending structures; the pairs of the current sheet metal round pin sockets (131) are arranged relative to each other with the socket support portion (1311) as the contact end; The socket assembly (2) comprises a socket housing (21) and a plug unit (22); the plug units (22) are arranged in pairs; a plurality of pairs of the plug units (22) are evenly connected to the socket housing (21) along the longitudinal direction; each of the plug units (22) comprises a sheet metal round pin plug (221); the sheet metal round pin plug (221) comprises a plug plugging portion (2211) and a plug positioning portion (2212) integrally formed from a sheet metal.

2. The electrical connector according to claim 1, wherein: A plurality of jack mounting structures are arranged on the plug lower shell (111); each of the jack mounting structures comprises two jack mounting parts (1111) and one jack limiting part (1112); the jack limiting part (1112) is arranged at a middle position between the two jack mounting parts (1111); each of the jack mounting parts (1111) comprises a pinhole through hole (11112) and a jack positioning platform (11113) arranged from the outside to the inside; and a plug passing groove is arranged at the bottom of the jack mounting structure.

3. The electrical connector according to claim 1, wherein: The upper portion of the socket housing (21) is evenly distributed along the long axis direction with a plurality of plug installation positions (215) arranged in pairs and opposite to each other; each of the plug installation positions (215) is provided with a through plug through hole (211); and the lower portion of the socket housing (21) is provided with a plurality of plug limit platforms (217).

4. The electrical connector according to claim 1, characterized in that; The jack connection part (1312) is a sleeve structure with two open ends formed by a plate material; a plurality of jack connection part finger springs (13121) are arranged at intervals on the circumference of the end of the jack connection part (1312); and the plug connection part (2211) is a sleeve structure formed by bending a plate material and having a ball head bottom at the end.

5. The electrical connector according to any one of claims 1 to 4, characterized in that , and also includes an anti-misinsertion small component; the anti-misinsertion small component includes a plug anti-misinsertion unit (14) and a socket anti-misinsertion unit (23).

6. The electrical connector according to claim 5, characterized in that The plug anti-misinsertion unit (14) comprises a plug anti-misinsertion key (141) and a socket locking screw (142); the plug anti-misinsertion key (141) comprises a plug anti-misinsertion key orientation strip (1411) and a plug positioning notch (1412); a plurality of finger-shaped plug anti-misinsertion key buckles (14111) are evenly distributed on the outer circumference of the end of the plug anti-misinsertion key orientation strip (1411).

7. The electrical connector according to claim 6, characterized in that , plug misinsertion prevention key mounting parts (1115) are respectively provided at both ends of the long axis of the plug lower shell (111); the plug misinsertion prevention key mounting parts (1115) include a plug lower shell directional center hole (11151) and a plug lower shell misinsertion prevention positioning hole (11152); the plug lower shell misinsertion prevention positioning hole (11152) is evenly distributed on the outer circumference of the plug lower shell directional center hole (11151).

8. The electrical connector according to claim 6, characterized in that The socket anti-misinsertion unit (23) comprises a socket anti-misinsertion key (231) and a socket anti-misinsertion mating nut (232); the socket anti-misinsertion key (231), a socket anti-misinsertion key notch (2312) and a socket anti-misinsertion key positioning finger (2311); the socket anti-misinsertion key notch (2312) and the plug positioning notch (1412) have a circumferential complementary structure.

9. The electrical connector according to claim 8, characterized in that , socket anti-misinsertion key installation parts (216) are respectively arranged at both ends of the long axis of the socket housing (21); the socket anti-misinsertion key installation part (216) comprises a socket anti-misinsertion key installation center hole (2161) and a socket anti-misinsertion key installation limiting groove (2162); a plurality of the socket anti-misinsertion key installation limiting grooves (2162) are circumferentially arranged on the outer periphery of the socket anti-misinsertion key installation center hole (2161).

10. The electrical connector according to any one of claims 1 to 4 and 6 to 9, characterized in that , further comprising two extraction aids (15); the extraction aids (15) are provided with a pair of extraction aid mounting holes (1521) and a pair of extraction aid buckles (1522); a pair of plug extraction aid mounting small units are symmetrically arranged at both ends of the long axis of the lower plug shell (111); the two extraction aids (15) are arranged in mirror symmetry and are respectively connected to the plug extraction aid mounting small units.

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