Electric connector

Abstract

The utility model discloses an electric connector, and belongs to the technical field of power system relay protection and control. The problems that an electric connector is high in production cost and poor in electric connection reliability can be solved. The electric connector comprises a plug assembly and a socket assembly. A plug cover unit of the plug assembly comprises a plug cover body and a plurality of metal plate round needle jacks connected with the plug cover body. The socket assembly comprises a socket end cover and a plurality of metal plate round needle plugs connected with the socket end cover; the metal plate round needle jack and the metal plate round needle plug are made of plates; the metal plate round needle insertion hole is provided with a sleeve-shaped round needle insertion hole round needle positioning part with two open ends, and the metal plate round needle plug is provided with a sleeve-shaped plug inner end with the end being a ball head barrel bottom; and the metal plate round needle plugs are connected to the corresponding metal plate round needle jacks in a plug-in manner to form a group of electric contact pairs. The electric connector provided by the utility model is low in production cost, and improves the connection reliability and accuracy of the electric contact pair and the plugging efficiency of the plug part. The electric connector provided by the utility model is wide in applicability.

Description

Technical Field

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

[0002] An electrical connector is an electrical component used for circuit connection. The components of an electrical connector are one-piece, two-piece or multi-piece. Among them, a two-piece electrical connector includes a socket and a plug. The key to its functional stability and reliability lies in the matching structure of the electrical contact pair (pin and socket) and the wiring method of the lead wires.

[0003] In the prior art, the matching structure between electrical contact pairs mostly adopts the matching of sheet metal finger-shaped springs and sheet metal square pins, and the matching of round sockets and round pins. Among them, although the matching of sheet metal finger-shaped springs and sheet metal square pins is convenient for processing, the structure of sheet metal square pins will cause the electrical contact pairs to be unable to form many contact points, which may easily lead to contact failure between the electrical contact pairs and increase the probability of interruption of electrical connection signals. The circular pattern of pins and sockets must use copper alloy rods as raw materials and are formed through processes such as turning, milling, drilling, and pressing; the machining process of circular contacts is complicated, with many consumables and high costs, so that the wire lead-out end of the connector can only adopt limited technical measures, such as cold pressing connection.

[0004] In the prior art, the wiring methods of electrical connector terminals are roughly divided into screw crimping wire connection, spring crimping wire connection, cold crimping wire connection and axial screw crimping wire connection. Among them, axial screw wire crimping is suitable for crimping wires with large cross-sectional areas, but not suitable for secondary equipment in power systems with small wire cross-sectional areas. Among the other wire crimping methods, spring crimping wires are divided into two modes: pull-back spring and disc spring; under the condition of environmental vibration in the working condition, the anti-loosening performance of screw crimping is poor; although the wire connection methods using spring crimping and cold crimping can effectively prevent loosening, special tools are required for cold crimping wiring and disassembly of wires, and if spring crimping wires are used, a transition metal part needs to be welded or riveted, which will affect the reliability of the electrical connector and the process is complicated and costly.

[0005] Furthermore, the electrical connector often needs to be plugged in and out of the socket during use; plugging and unplugging the plug is difficult without auxiliary tools.

[0006] Whether it is possible to manufacture an electrical connector that has a simple overall structure, is easy to process, and is convenient to use, and ensures that the electrical connectivity between electrical contact pairs (pins and sockets) is more stable, reliable, and precise is a topic that technical personnel in this field need to study. Utility Model Content

[0007] In view of the above analysis, the present utility model aims 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 of secondary equipment in power systems.

[0008] The present utility model adopts the following technical solutions to solve the above technical problems:

[0009] An electrical connector includes a plug assembly and a socket assembly; the plug assembly includes a plug cover unit; the plug cover unit includes a plug cover body and a plurality of sheet metal round pin jacks; the sheet metal round pin jacks are limit-connected to the plug cover body; the socket assembly includes a socket end cover and a plurality of sheet metal round pins; the sheet metal round pins are limit-connected to the socket end cover; the sheet metal round pin jacks and the sheet metal round pins are made of sheet material; one end of the sheet metal round pin jack is provided with a round pin jack round pin positioning portion, and the round pin jack round pin positioning portion is a sleeve structure with both ends open; one end of the sheet metal round pin is provided with a plug inner end, and the plug inner end is a sleeve structure with a spherical head bottom at the end; the sheet metal round pin can be butted and inserted into the round pin jack round pin positioning portion; each sheet metal round pin is inserted and connected to the corresponding sheet metal round pin jack to form a group of electrical contact pairs.

[0010] Further, the sheet metal round pin jack is also provided with a round pin jack support plate and a sheet metal round pin jack positioning portion; the plane of the round pin jack support plate is parallel to the axis of the round pin jack round pin positioning portion.

[0011] Hole positioning portion; the plane of the round pin jack support plate is parallel to the axis of the round pin jack round pin positioning portion.

[0012] Further, a plurality of round pin jack support plate limiting ribs are arranged on the round pin jack support plate; a plurality of spaced contact finger-shaped spring pieces are arranged on the circumference of the end of the round pin jack round pin positioning portion

[0013] Further, a plurality of the contact finger-shaped spring pieces are arranged at intervals and surround to form a converging conical tube shape, and the end of each contact finger-shaped spring piece is turned outwards; the ends of the plurality of turned-out contact finger-shaped spring pieces together form a finger-shaped spring piece guiding portion; the maximum outer diameter of the finger-shaped spring piece guiding portion is smaller than the cylindrical diameter of the round pin jack round pin positioning portion.

[0014] Further, the sheet metal round pin also includes a plug outer end and a plug connecting portion; the plug connecting portion connects the plug inner end and the plug outer end; a plug buckle portion is also arranged on the plug connecting portion.

[0015] Further, the inner end of the plug is formed into a round pin shape by bending a plate; the plug connecting portion is vertically connected to the inner end and the outer end of the plug; two oppositely arranged plug snap portions are arranged on both sides of the plug connecting portion; and plug snap claws are arranged on the plug snap portions.

[0016] Further, a plug anti-misinsertion encoder socket is arranged on the plug cover body, and a plug anti-misinsertion encoder socket limiting portion is arranged on the plug anti-misinsertion encoder socket; a socket anti-misinsertion encoder socket is arranged on the socket end cover, and a socket anti-misinsertion encoder socket limiting portion is arranged on the socket anti-misinsertion encoder socket.

[0017] Further, an anti-misinsertion encoder is further included; the anti-misinsertion encoder is a pin-shaped structural member; and a plurality of the anti-misinsertion encoders are respectively and staggeredly connected to the socket anti-misinsertion encoder socket and the plug anti-misinsertion encoder socket.

[0018] Further, installation shafts and snap fasteners for a plug puller are arranged in pairs at both ends of the major axis of the plug shell body.

[0019] Further, the plug assembly further includes a plug shell unit; the plug shell unit further includes a pair of plug pullers; and a plug puller installation hole and a plug puller snap table are arranged on the plug puller.

[0020] Compared with the prior art, the present utility model can at least achieve one of the following beneficial effects:

[0021] 1. The present utility model manufactures a sheet metal round pin socket and a sheet metal round pin plug through a plate, the processing technology is simple, the material cost and the manufacturing cost are greatly reduced, and the installation is convenient.

[0022] 2. One end of the sheet metal round pin socket of the present utility model is provided with a round pin positioning portion of the round pin socket; the round pin positioning portion of the round pin socket can stably connect the sheet metal round pin plug, and greatly improves the reliability of the electrical connection of the electrical connector.

[0023] 3. The electrical connector of the present utility model includes a plurality of anti-misinsertion encoders. By arranging and combining the installation positions of the anti-misinsertion encoders, the plugging error of adjacent connectors of the same type can be effectively prevented, thereby greatly improving the use accuracy of the electrical connector.

[0024] 4. A pair of plug pullers are arranged on the plug assembly of the present utility model. By pressing the plug pullers, the plug assembly can be easily pulled out relative to the socket assembly, greatly improving the use convenience of the electrical connector.

[0025] In the present utility model, the above technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present utility model will be described in the subsequent specification. Moreover, some advantages can be made obvious from the specification or understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained from the content specifically pointed out in the specification and the drawings. Brief Description of the Drawings

[0026] 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.

[0027] 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 denote the same components.

[0028] Figure 1 It is a schematic diagram of the overall structure of the electrical connector of the present utility model;

[0029] Figure 2 It is a schematic diagram of the overall structure of the plug assembly of the present utility model;

[0030] Figure 3 It is a schematic diagram of the overall structure of the plug housing unit of the present utility model;

[0031] Figure 4 It is a schematic diagram of a partial structure of the plug assembly of the present utility model;

[0032] Figure 5 It is a schematic diagram of the extraction aid structure of the present utility model;

[0033] Figure 6 It is a schematic diagram of the overall structure of the plug cover unit of the present utility model;

[0034] Figure 7 It is a schematic diagram of the structure of the wire-pressing spring piece of the present utility model;

[0035] Figure 8 It is a schematic diagram of the structure of the sheet metal round pin socket of the present utility model;

[0036] Figure 9 It is a schematic diagram of a partial structure of the present utility model;

[0037] Figure 10 It is a schematic diagram of the structure of the socket end cover of the present utility model;

[0038] Figure 11 It is a schematic diagram of the anti-misinsertion encoder structure of the present utility model;

[0039] Figure 12 It is a schematic diagram of the structure of the sheet metal round pin plug of the present utility model;

[0040] Figure 13 is Figure 1 the sectional view taken along the A-A direction in the middle;

[0041] Figure 14 is the installation schematic diagram of the electrical connector of the present utility model in the usage state.

[0042] Reference numerals:

[0043] 1. Plug assembly; 11. Plug housing unit; 111. Plug housing body; 1111. Extractor installation shaft; 1112. Extractor buckle; 1113. Plug button socket; 112. Plug button; 113. Extractor; 1131. Extractor installation hole; 1132. Extractor buckle platform; 1133. Extractor reinforcing rib; 12. Plug cover unit; 121. Plug cover body; 1211. Plug anti-misinsertion encoder socket; 1212. Pressing spring piece installation part; 1213. Sheet metal round pin socket limiting part; 1214. Sheet metal round pin socket positioning hole; 122. Sheet metal round pin socket; 1221. Round pin socket support plate; 12211. Round pin socket support plate limiting rib; 1222. Round pin socket round pin positioning part; 12221. Contact finger-shaped spring piece; 122211. Finger-shaped spring piece guiding part; 1223. Sheet metal round pin socket positioning part; 123. Pressing spring piece; 1231. Pressing spring piece fixing part; 1232. Pressing spring piece positioning part; 1233. Pressing spring piece force application part; 12331. Pressing spring piece force application part claw; 123311. Pressing spring piece claw reinforcing rib; 2. Socket assembly; 21. Socket end cover; 211. Sheet metal round pin plug through hole; 212. Socket anti-misinsertion encoder socket; 22. Sheet metal round pin plug; 221. Inner end of the plug; 222. Outer end of the plug; 223. Plug buckle part; 2231. Plug buckle main board; 2232. Plug buckle claw; 224. Inner support plate of the plug; 225. Outer support plate of the plug; 226. Sheet metal round pin plug bending part; 23. Socket pressing cover; 3. Anti-misinsertion encoder; 100. Printed circuit board; 200. Panel. Detailed implementation manners

[0044] The preferred embodiments of the present utility model will be specifically described in conjunction with the accompanying drawings. Among them, the accompanying drawings constitute a part of the present utility model and, together with the embodiments of the present utility model, are used to explain the principle of the present utility model; they are not used to limit the scope of the present utility model.

[0045] This embodiment stipulates that:

[0046] 1. Up and down directions: The plug assembly 1 is above and the socket assembly 2 is below;

[0047] 2. End: The outermost / farthest end of the part structure is the end of the part.

[0048] 3. Inner and outer: For a part / unit / component, the part closer to the center is the inner side, and the side wall is the outer side. 4. Long axis and short axis: For a part / unit / component, the direction with the longer geometric dimension is the long axis, and the shorter direction is the short axis.

[0049] The following combines Figures 1 - 14 to describe the technical solution of the electrical connector of the present invention with specific embodiments:

[0050] As Figure 1 , Figure 8 and Figure 14 shown, an electrical connector includes a plug assembly 1 and a socket assembly 2, and further includes an anti-misinsertion encoder 3. The plug assembly 1 is connected to the socket assembly 2, and the anti-misinsertion encoder 3 is connected to the plug assembly 1 and the socket assembly 2.

[0051] As Figure 2 and Figure 4 shown, the plug assembly 1 includes a plug housing unit 11 and a plug cover unit 12. Among them, the plug cover unit 12 includes a plug cover body 121 and a plurality of sheet metal round pin jacks 122.

[0052] As Figure 8 shown, a round pin positioning portion 1222 of the round pin jack is arranged on the sheet metal round pin jack 122, and the round pin positioning portion 1222 of the round pin jack is a sleeve structure with both ends open; the sheet metal round pin jack 122 is limitedly connected to the plug cover body 121.

[0053] As Figure 1 and Figure 14 shown, the socket assembly 2 includes a socket end cover 21 and a sheet metal round pin plug 22; the sheet metal round pin plug 22 is limitedly connected to the socket end cover 21.

[0054] As Figure 9 shown, the sheet metal round pin plug 22 includes a plug inner end 221 arranged at one end; the plug inner end 221 can be inserted into the sheet metal round pin jack 122 from the end of the round pin positioning portion 1222 of the round pin jack. The sheet metal round pin plug 22 is inserted into the corresponding sheet metal round pin jack 122 by inserting the plug inner end 221 from the outside to the inside. The connected sheet metal round pin plug 22 and the sheet metal round pin jack 122 form a set of electrical contact pairs.

[0055] The sheet metal round pin jack 122 and the sheet metal round pin plug 22 in this embodiment are made of a plate, preferably a metal plate. The sheet metal round pin jack 122 is in a sleeve shape, and the sheet metal round pin plug 22 is a sleeve structure with a ball head and a bottom at one end. One sheet metal round pin plug 22 is inserted into the corresponding sheet metal round pin jack 122 to form a set of electrical contact pairs.

[0056] One socket assembly 2 can be matingly connected to one or more plug assemblies 1; one or more anti-misinsertion encoders 3 can be connected to the electrical connector to facilitate identifying the correct positions of the connection plugs of the electrical connector; different permutations and combinations of the mounting positions of the multiple anti-misinsertion encoders 3 can effectively prevent the misinsertion of adjacent connectors of the same type, thereby greatly improving the usage accuracy of the electrical connector.

[0057] Preferably, one plug assembly 1 of this embodiment is completely matingly connected to one socket assembly 2; the plug assembly 1 can be inserted into the socket assembly 2 from top to bottom. Four anti-misinsertion encoders 3 are evenly arranged between the plug assembly 1 and the socket assembly 2.

[0058] As Figure 14 shown, the socket assembly 2 is connected to the printed circuit board 100 downward through conventional connection techniques, and the panel 200 surrounds the socket assembly 2 and is connected to the socket assembly 2 to form the connection between the electrical connector of this embodiment and the peripheral device.

[0059] As Figure 2 shown, the plug assembly 1 further includes a plug housing unit 11. A fastening structure is provided in a matching manner between the lower part of the plug housing unit 11 and the upper part of the plug cover unit 12, and the plug cover unit 12 can be inserted upward into the lower end of the plug housing unit 11.

[0060] As Figure 2 and Figure 3 shown, the plug housing unit 11 of this embodiment includes a plug housing body 111, a plug button 112, and a pull assist 113. Multiple plug buttons 112 are evenly arranged and connected to the inner side of the upper end of the plug housing body 111. Two pairs of pull assists 113 are respectively connected to the outer sides of both ends of the long axis of the plug housing body 111.

[0061] The plug housing body 111 of this embodiment is a frame structural member formed by injection molding of modified nylon material.

[0062] As Figure 3 、 Figure 4 and Figure 13 shown, preferably, a plurality of plug button sockets 1113 are evenly arranged at the upper end inside the plug housing body 111 for inserting the plug buttons 112; a pair of pull assist mounting shafts 1111 are respectively provided at the lower parts of both ends of the long axis of the plug housing body 111; a pair of pull assist buckles 1112 are respectively provided at the middle parts of both ends of the long axis of the plug housing body 111.

[0063] The pull assist 113 of this embodiment is a sheet metal structural member formed by injection molding of modified nylon material.

[0064] As Figure 5As shown, preferably, on the long-axis side surface of the plug housing body 111, the ejector 113 is provided with ejector reinforcing ribs 1133 that are narrower at the top and wider at the bottom on both sides. A pair of ejector mounting holes 1131 are symmetrically arranged at the lower part of the ejector reinforcing ribs 1133; the ejector 113 is connected to the ejector mounting shaft 1111 in a matching manner through the ejector mounting holes 1131. A pair of ejector snap platforms 1132 are symmetrically arranged in the middle of the ejector reinforcing ribs 1133; the ejector snap platforms 1132 can be snapped at the ejector snaps 1112 with a matching structure. The ejector reinforcing ribs 1133 are narrower at the top and wider at the bottom, and this design enables the upper part of the ejector 113 to be easily deformed by force. When an operator presses the upper parts of the two ejectors 113 from above, a pair of ejectors 113 can clamp the plug housing body 111 and easily pull the plug assembly 1 out of the socket assembly 2.

[0065] Further preferably, a hollow structure is arranged on the vertical surface of the plate structure of the ejector 113 in this embodiment, which reduces the weight on the one hand and increases the elasticity of the upper part of the ejector 113 without loss of strength on the other hand.

[0066] The plug cover unit 12 in this embodiment is a frame structural member formed by injection molding of a deformable nylon material.

[0067] As Figure 6 and Figure 13 shown, the plug cover unit 12 further includes a plurality of wire pressing spring pieces 123 having the same number as the sheet metal round pin jacks 122. The plug buttons 112, the sheet metal round pin jacks 122, and the wire pressing spring pieces 123 are in one-to-one correspondence in position.

[0068] In the installed state, each plug button 112 presses against 1 wire pressing spring piece 123, and the plug button 112 performs auxiliary positioning / pressing on the corresponding wire pressing spring piece 123 so as to position / release the external wire at the corresponding sheet metal round pin jack 122.

[0069] As Figure 6 shown, along the long-axis direction, 4 plug anti-misinsertion encoder sockets 1211 are evenly distributed in the lower part of the plug cover body 121 in this embodiment; the plug anti-misinsertion encoder sockets 1211 are of a sunken groove structure; a plurality of plug anti-misinsertion encoder socket limiting parts are arranged on the inner wall surface of each plug anti-misinsertion encoder socket 1211 in the up-down direction. The anti-misinsertion encoder 3 can be connected to the plug anti-misinsertion encoder sockets 1211.

[0070] As Figure 6 and Figure 13As shown in the figure, a plurality of through sheet metal round pin jack positioning holes 1214 are evenly distributed inside the plug cover body 121 of this embodiment; on the outer side of each side of the sheet metal round pin jack positioning hole 1214, a wire pressing spring piece installation part 1212 is provided, and on the middle side, a sheet metal round pin jack limiting part 1213 is provided. The sheet metal round pin jack 122 is position-limited by the sheet metal round pin jack limiting part 1213 and is inserted and connected into the sheet metal round pin jack positioning hole 1214; the wire pressing spring piece 123 is wrapped around the outer periphery of the wire pressing spring piece installation part 1212 from top to bottom. The wire pressing spring piece 123 of this embodiment is an elastic metal plate part.

[0071] As Figure 7 shown, the wire pressing spring piece 123 includes a wire pressing spring piece fixing part 1231, a wire pressing spring piece positioning part 1232 and a wire pressing spring piece force applying part 1233 arranged in sequence; the wire pressing spring piece positioning part 1232 is a bending structure between the wire pressing spring piece fixing part 1231 and the wire pressing spring piece force applying part 1233, and the included angle between the wire pressing spring piece fixing part 1231 and the wire pressing spring piece force applying part 1233 is less than 90°.

[0072] Preferably, according to the specific structure inside the plug shell body 111, the angle between the wire pressing spring piece fixing part 1231 and the wire pressing spring piece force applying part 1233 of the wire pressing spring piece 123 of the present utility model in the free state is 65°.

[0073] Preferably, in order to increase the force application deformation amount to strengthen the pressing force, a notch is opened at the end of the wire pressing spring piece force applying part 1233 to form 2 wire pressing spring piece force applying part claws 12331; preferably, the 2 wire pressing spring piece force applying part claws 12331 of this embodiment are mirror-symmetrical structures; on the outer part of the wire pressing spring piece force applying part claw 12331, 1 or more synaptic structure wire pressing spring piece force applying part reinforcing ribs 123311 are provided to increase the structural strength and contact area of the wire pressing spring piece force applying part claw.

[0074] The sheet metal round pin jack 122 of this embodiment is a structural part formed by processing a metal plate.

[0075] As Figure 8 and Figure 13 shown, the sheet metal round pin jack 122 is connected inside the plug cover body 121.

[0076] The sheet metal round pin jack 122 includes a plate-shaped round pin jack support plate 1221, a sheet metal round pin jack positioning part 1223 and a round pin jack round pin positioning part 1222 arranged in sequence. The sheet metal round pin jack positioning part 1223 is a right-angle bending structure connecting the round pin jack support plate 1221 and the round pin jack round pin positioning part 1222.

[0077] On one side surface of the round pin jack support plate 1221 facing the round pin positioning part 1222 of the round pin jack, a plurality of convex round pin jack support plate limiting ribs 12211 are arranged; preferably, the plurality of round pin jack support plate limiting ribs 12211 are arranged in an up-and-down structure to limit the displacement of the pressing spring piece force application part 1233 at the end of the pressing spring piece 123. Preferably, the round pin jack support plate 1221 in this embodiment is provided with 2 round pin jack support plate limiting ribs 12211 with a triangular cross-section, and a plurality of protrusions parallel to the edge are further arranged on the protruding surface of the round pin jack support plate limiting rib 12211, and the end of the pressing spring piece force application part 1233 of the pressing spring piece 123 can be stably limited between any 2 adjacent round pin jack support plate limiting ribs 12211.

[0078] Specifically, the round pin positioning part 1222 of the round pin jack is bent from a plate into a sleeve structure with both ends open, and the outer diameter of the round pin positioning part 1222 of the round pin jack is not greater than the diameter of the sheet metal round pin jack positioning hole 1214, so that the round pin positioning part 1222 of the round pin jack is easily inserted and connected into the sheet metal round pin jack positioning hole 1214; a plurality of contact finger-shaped spring pieces 12221 are arranged on the circumference of the end of the round pin positioning part 1222 of the round pin jack.

[0079] Preferably, the plurality of contact finger-shaped spring pieces 12221 in this embodiment are arranged at equal intervals and surround into a tapered tube shape with a closed end, and the end of the contact finger-shaped spring piece 12221 turns outwards to form a finger-shaped spring piece guiding part 122211; the maximum outer diameter of the finger-shaped spring piece guiding part 122211 is smaller than the cylindrical diameter of the round pin positioning part 1222 of the round pin jack; this design not only facilitates guiding the round pin positioning part 1222 of the round pin jack to be inserted and connected into the hole positioning hole 1214, but also can increase the structural strength of the contact finger-shaped spring piece 12221.

[0080] In the installed state, the round pin positioning part 1222 on the sheet metal round pin jack 122 is connected through and at the sheet metal round pin jack positioning hole 1214 of the plug cover body 121; the right-angle bending part of the sheet metal round pin jack positioning part 1223 on the sheet metal round pin jack 122 is limited at the upper end surface of the sheet metal round pin jack limiting part 1213, and the round pin jack support plate 1221 on the sheet metal round pin jack 122 is pressed or released by the pressing spring piece force application part 1233 of the pressing spring piece 123.

[0081] In the installed state, the pressing spring piece fixing part 1231 of the pressing spring piece 123 is limited between the outer shell of the plug cover body 121 and the pressing spring piece installation part 1212, the pressing spring piece fixing part 1232 of the pressing spring piece 123 is limited at the upper end part of the pressing spring piece installation part 1212, and the distal end of the pressing spring piece force application part 1233 of the pressing spring piece 123 is limited between any 2 adjacent round pin jack support plate limiting ribs 12211 on the round pin jack support plate 1221.

[0082] AsFigure 13 As shown, the externally connected wire with a tubular crimping end ( Figure 13 not shown in the figure) passes through the redundant space inside the plug housing body 111 and enters between the round pin jack support plate 1221 and the crimping spring piece 123. In the installed state, when an external force pulls the externally connected wire or under vibration conditions, the elasticity of the crimping spring piece 123 causes the distal end of the force application part 1233 of the crimping spring piece to be more firmly limited between any two round pin jack support ribs 12211 on the round pin jack support plate 1221. Therefore, the externally connected wire limited here is more tightly connected to the electrical connector, thus realizing effective anti-loosening of the externally connected wire.

[0083] When it is necessary to disassemble and pull out the externally connected wire, only need to press down the plug button 112. The lower part of the plug button 112 presses against the force application part 1233 of the crimping spring piece 123. The force application part 1233 of the crimping spring piece retracts towards the crimping spring piece fixing part 1231 and no longer presses on the sheet metal round pin jack 122, thereby releasing the space between the crimping spring piece 123 and the sheet metal round pin jack 122; at this time, the externally connected wire can be easily pulled out.

[0084] The design that the distal end of the force application part 1233 of the crimping spring piece 123 is limited between the round pin jack support ribs 12211 of the round pin jack support plate 1221 and clamps the external wire makes the process of installing and disassembling the externally connected wire simpler and the connection relationship tighter, and can greatly improve the installation efficiency and working stability of the electrical connector.

[0085] As Figure 9 and Figure 13 shown, the socket assembly 2 includes a socket end cover 21 and a plurality of sheet metal round pin plugs 22 connected to the socket end cover 21. In this embodiment, sheet metal round pin plugs 22 with different sizes are provided, and all sheet metal round pin plugs 22 are connected to the printed circuit board 100.

[0086] The socket end cover 21 of this embodiment is a frame structural part injection-molded from a modified nylon material.

[0087] As Figure 10 shown, a plurality of sheet metal round pin plug through holes 211 are evenly distributed inside the socket end cover 21, and a plurality of socket anti-misinsertion encoder sockets 212 with a plurality of sunk groove structures are arranged on the inner side wall surface; a plurality of socket anti-misinsertion encoder socket limiting parts are arranged along the up and down direction on the inner wall surface of the socket anti-misinsertion encoder socket 212. The plug anti-misinsertion encoder socket 1211 and the socket anti-misinsertion encoder socket 212 are in one-to-one correspondence in structure and position.

[0088] As Figure 9 、 Figure 10 and Figure 13As shown, specifically, a plurality of socket anti-misinsertion encoder sockets 212 in the shape of sunken grooves are arranged at the position facing downward on the upper end surface of the socket end cover 21 in this embodiment; four socket anti-misinsertion encoder sockets 212 are evenly arranged along the long axis direction on the socket end cover 21 in this embodiment.

[0089] The sheet metal round pin plug 22 in this embodiment is a structural part processed from a metal sheet.

[0090] As Figure 12 shown, the sheet metal round pin plug 22 includes a plug inner end 221, a plug connection part, and a plug outer end 222 arranged in sequence. The plug connection part can connect the plug inner end 221 and the plug outer end 222. A plug buckle part 223 is also arranged on the plug connection part.

[0091] Specifically, the plug connection part includes a plug inner support plate 224, a sheet metal round pin plug bending part 226, and a plug outer support plate 225. The end of the plug inner support plate 224 is connected to the plug inner end 221, and the end of the plug outer support plate 225 is connected to the plug outer end 222; the plug inner support plate 224 and the plug outer support plate 225 are bent at 90° at the sheet metal round pin plug bending part 226.

[0092] Preferably, a pair of plug buckle parts 223 are symmetrically arranged on both sides of the end of the plug inner support plate 224 in this embodiment.

[0093] Further preferably, the plug inner end 221 is a round pin-shaped structure formed by bending a sheet, specifically a sleeve structure with a spherical head and a bottom at the end. The plug outer end 222 can also have the same shape as the plug inner end 221, and the shape of the plug outer end 222 is convenient for connecting external devices. In this embodiment, it is preferably that the plug inner end 221 and the plug outer end 222 have the same appearance structure.

[0094] The plug buckle part 223 is perpendicular to the plug inner support plate 224; the plug buckle part 223 includes a plug buckle main board 2231 and a plug buckle claw 2232; the plug buckle claw 2232 is arranged on the side of the plug buckle main board 2231 facing the plug outer end 222; the paired plug buckle claws 2232 are in an outward-expanding structure; specifically in this embodiment, the paired plug buckle claws 2232 are arranged in an outward V shape, and the plug buckle claws 2232 have elasticity relative to the overall structure of the sheet metal round pin plug 22.

[0095] The plug buckle part 223 is used for being pressure-limited in the matching redundant space in the socket end cover 21 to enhance the installation stability of the sheet metal round pin plug 22 and the socket end cover 21.

[0096] Among them, the outer diameter of the inner end 221 of the round-pin-shaped plug has a clearance fit with the inner diameter of the round-pin jack positioning portion 1222 on the sheet-metal round-pin jack 122 and is greater than the minimum inner diameter of the converging conical tube of the contact finger-shaped spring piece 12221. This design enables the sheet-metal round-pin plug 22 to be inserted into the round-pin jack positioning portion 1222 and be stably clamped by the contact finger-shaped spring piece 12221, thereby ensuring the stable connection between the socket assembly 2 and the plug assembly, and greatly improving the working stability of the electrical connector.

[0097] Since the outer ends 222 of all the sheet-metal round-pin plugs 22 need to be connected to the printed circuit board 100, the sheet-metal round-pin plugs 22 arranged at different positions within the socket end cap 21 need to be designed with different structural dimensions so that the outer ends 222 of all the sheet-metal round-pin plugs 22 can be neatly connected to the printed circuit board 100.

[0098] As Figure 11 shown, the anti-misinsertion encoder 3 is a pin-shaped structural member. Preferably, the anti-misinsertion encoder 3 is made of modified nylon material.

[0099] In the installed state, the plug assembly 1 and the socket assembly 2 are respectively connected with the anti-misinsertion encoder 3 at the plug anti-misinsertion encoder socket 1211 and the socket anti-misinsertion encoder socket 212 where the positions do not correspond to each other. That is, multiple anti-misinsertion encoders 3 are respectively connected in a staggered manner at the plug anti-misinsertion encoder socket 1211 of the plug cover body 121 and the socket anti-misinsertion encoder socket 212 of the socket end cap 21, forming a two-way structural coupling between the anti-misinsertion encoder 3 and the plug assembly 1 and the socket assembly 2, so that the plug assembly 1 and the socket assembly 2 can be smoothly plugged and connected.

[0100] When the anti-misinsertion encoder 3 is connected to both the corresponding plug anti-misinsertion encoder socket 1211 and the socket anti-misinsertion encoder socket 212, during the connection process of the plug assembly 1 to the socket assembly 2, the two anti-misinsertion encoders 3 at the corresponding positions will cause an interference in the installation position, thereby preventing the plug assembly 1 from being plugged onto the socket assembly 2. Correctly matching and setting the anti-misinsertion encoder 3 on the plug assembly 1 and the socket assembly 2 can prevent the connection between the mismatched plug assembly 1 and socket assembly 2. The anti-misinsertion function of the anti-misinsertion encoder 3 can effectively prevent the occurrence of major accidents.

[0101] The above is only the preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any changes or substitutions 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 cover unit (12); the plug cover unit (12) comprises a plug cover body (121) and a plurality of sheet metal round pin plug holes (122); the sheet metal round pin plug holes (122) are position-limitedly connected to the plug cover body (121); the socket assembly (2) comprises a socket end cover (21) and a plurality of sheet metal round pin plugs (22); the sheet metal round pin plugs (22) are position-limitedly connected to the socket end cover (21); the sheet metal round pin plug holes (122) and the sheet metal round pin plugs (22) are made of sheet metal; One end of the sheet metal round needle plug hole (122) is provided with a round needle plug hole round needle positioning portion (1222), and the round needle plug hole round needle positioning portion (1222) is a sleeve structure with two ends open; one end of the sheet metal round needle plug (22) is provided with a plug inner end (221), and the plug inner end (221) is a sleeve structure with a ball head tube bottom at the end; the sheet metal round needle plug (22) can be docked and inserted into the round needle plug hole round needle positioning portion (1222); each sheet metal round needle plug (22) is plug-in connected to the corresponding sheet metal round needle plug hole (122) to form a set of electrical contact pairs.

2. The electrical connector according to claim 1, wherein: The sheet metal round needle insertion hole (122) is also provided with a round needle insertion hole support plate (1221) and a sheet metal round needle insertion hole positioning portion (1223); the plane of the round needle insertion hole support plate (1221) is parallel to the axis of the round needle insertion hole round needle positioning portion (1222).

3. The electrical connector according to claim 2, wherein: A plurality of round needle insertion hole support plate limiting ribs (12211) are arranged on the round needle insertion hole support plate (1221); and a plurality of contact finger-shaped spring sheets (12221) are arranged on the circumference of the end of the round needle insertion hole round needle positioning portion (1222).

4. The electrical connector according to claim 3, characterized in that: A plurality of contact finger-shaped springs (12221) are arranged at intervals and surrounded to form a closed conical cylinder; the end of each contact finger-shaped spring (12221) is turned outward; the ends of a plurality of turned-out contact finger-shaped springs (12221) together form a finger-shaped spring guide portion (122211); the maximum outer diameter of the finger-shaped spring guide portion (122211) is smaller than the cylinder diameter of the round needle insertion hole round needle positioning portion (1222).

5. The electrical connector according to claim 1, wherein: The sheet metal round pin plug (22) further comprises a plug outer end (222) and a plug connecting portion; the plug connecting portion connects the plug inner end (221) and the plug outer end (222); and a plug buckle portion (223) is also provided on the plug connecting portion.

6. The electrical connector according to claim 5, characterized in that: The inner end (221) of the plug is formed into a round needle shape by bending a plate; the plug connecting portion vertically connects the inner end (221) of the plug and the outer end (222) of the plug; two oppositely arranged plug buckle portions (223) are arranged on both sides of the plug connecting portion; and a plug buckle claw (2232) is arranged on the plug buckle portion (223).

7. The electrical connector according to claim 1, wherein: The plug cover body (121) is provided with a plug anti-misinsertion encoder socket (1211), and the plug anti-misinsertion encoder socket (1211) is provided with a plug anti-misinsertion encoder socket limiting portion; the socket end cover (21) is provided with a socket anti-misinsertion encoder socket (212), and the socket anti-misinsertion encoder socket (212) is provided with a socket anti-misinsertion encoder socket limiting portion.

8. The electrical connector according to claim 7, wherein: It also includes an anti-misinsertion encoder (3); the anti-misinsertion encoder (3) is a pin-shaped structural component; a plurality of the anti-misinsertion encoders (3) are respectively connected to the socket anti-misinsertion encoder socket (212) and the plug anti-misinsertion encoder socket (1211) in a staggered manner.

9. The electrical connector according to claim 1, wherein: A pull-out aid installation shaft (1111) and a pull-out aid buckle (1112) are provided in pairs at both ends of the long axis of the plug shell body (111).

10. The electrical connector according to claim 9, wherein: The plug assembly (1) further comprises a plug housing unit (11); the plug housing unit (11) further comprises a pair of pull-out aids (113); the pull-out aids (113) are provided with pull-out aid mounting holes (1131) and pull-out aid snap-on platforms (1132).

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