TWI635658B - Plug connector - Google Patents

Abstract

The invention discloses a plug connector, which comprises an insulating body, two rows of terminals, and a metal shell. Body and metal elastic plate; the insulating body is provided with a receiving cavity penetrating forward, two rows of terminals are respectively arranged on both sides of the receiving cavity and include a contact portion extending forward into the receiving cavity and extending the insulation backward. A connecting leg of the body; the metal shell covers the outer surface of the insulating body, and the elastic plate is clamped between the insulating body and the metal shell; wherein the elastic plate includes a At least two contact arms, the contact arms being located in front of the contact portion of the terminal; the insulating body having a pair of opposite side walls forming the receiving cavity, the side walls being provided with through holes for the contact arms to pass through The equal through holes are independent of each other and not connected. The metal elastic plate and the through-hole structure of the invention are beneficial to ensure the strength of the insulating body.

Description

Plug connector

The invention relates to a plug connector.

US Patent Application Publication No. 20130095702A1 discloses a two-way plug connector, which has a plug connector, the plug connector has opposite upper and lower surfaces, and a plurality of conductive terminals are disposed on the upper and lower surfaces. The conductive terminals exposed on the upper and lower surfaces are symmetrically spaced from each other, and the shape of the plug connector is approximately 180 degrees symmetrical, so that it can be inserted into the corresponding socket connector in the forward and reverse directions.

However, a switching circuit needs to be provided inside the socket connector or the electronic device to detect whether the plug connector is inserted in the forward direction or in the reverse direction, so as to start the corresponding subsequent program. The more terminals of the connector, the more complicated the switching circuit is. This is not in line with the trend. At the same time, the plug connector is an exposed plug, and there may still be the possibility of plug damage in actual use.

A new type of plug connector came into being. The plug connector can be inserted into the socket connector in both directions, and the two connectors can transmit high-frequency signals. After continuous technical research and development, new plug connectors and The socket connector can prevent electromagnetic signal interference and radio frequency interference. There are many parts of the plug connector and the socket connector, but due to the small size of the connector, it brings certain difficulties to the manufacture and strength of the product.

Therefore, it is hoped to design a new scheme to solve the above technical problems.

The object to be achieved by the present invention is to provide a plug connector with good strength.

In order to solve the above technical problem, the present invention provides a plug connector, which includes an insulating body, two rows of terminals, a metal shell, and a metal elastic plate; the insulating body is provided with a receiving cavity penetrating forward, and the two rows of terminals are arranged separately On both sides of the accommodating cavity and including contact portions extending forward into the accommodating cavity and connecting feet extending out of the insulating body backward; the metal shell covers the outer surface of the insulating body, and the elastic plate is Clamped between the insulating body and the metal shell; wherein the elastic plate includes At least two contact arms extending into the receiving cavity, the contact arms being located in front of the contact portion of the terminal; the insulating body having a pair of opposite side walls forming the receiving cavity, the side walls being provided for the contact Through-holes through which the arms pass, the through-holes are independent of each other and not connected.

Compared with the prior art, the present invention has the following effects: The metal elastic plate and the through-hole structure of the present invention are beneficial to ensure the strength of the insulating body.

111‧‧‧ Butt Department

112, 113, 322‧‧‧Fixed

1121, 1131‧‧‧ long side

1122, 1132‧‧‧ short side

1123, 1124, 1133, 16c, 330‧‧‧

1126, 1127, 1128‧‧‧ gap

11, 216, 314, 414, 514 ‧‧‧ metal case

2121, 403, 5121‧‧‧ sidewall

2151, 405, 515‧‧‧through holes

213, 320‧‧‧ side groove

215, 513‧‧‧ shallow concave area

218, 306, 406‧‧‧ terminals

219, 426‧‧‧ fixed block

200, 300, 400, 500‧‧‧ plug connectors

220, 305, 4061‧‧‧ contact

221, 307, 326, 538‧‧‧ connecting pins

222, 316, 420, 526‧‧‧ elastic plate

224, 421b‧‧‧ Rear fixed area

225, 422‧‧‧Fixing holes

226, 527‧‧‧ elastic arm

227, 428, 528, 529‧‧‧ contact arm

232‧‧‧Terminal Slot

233‧‧‧transverse partition

234, 532‧‧‧Terminal Block

235‧‧‧pin slot

236‧‧‧Sag

238, 308, 410, 524‧‧‧‧ Internal circuit board

239, 318, 412, 534‧‧‧ lock fasteners

240, 323, 413, 536‧‧‧

212, 302, 402‧‧‧ insulated body

304, 404, 214, 516‧‧‧ Containment Chamber

310, 416, 540‧‧‧ cable

312, 418‧‧‧Core

324‧‧‧lock head

325‧‧‧ outside

329‧‧‧back edge film

331‧‧‧holding hole

421a‧‧‧front contact area

407, 544‧‧‧ Positioning parts

430, 530‧‧‧ insulating sheet

441‧‧‧First metal case

442‧‧‧Second metal case

443‧‧‧First insulating shell

444‧‧‧Second insulation case

445‧‧‧ insulated jacket

531‧‧‧pin hole

600‧‧‧ flexible power terminal

602, 614‧‧‧ touch points

610‧‧‧Plug Power Terminal

612‧‧‧ vulnerable points

700‧‧‧Socket Power Terminal

702‧‧‧Signal terminal

The first view is an exploded perspective view of the connector of the plug connector according to the first embodiment of the present invention; the second view is an exploded perspective view of the first view from another angle; the third view is an exploded perspective view of the first view further assembled The fourth diagram is an exploded perspective view of the complete structure of the plug connector of the first diagram; the fifth diagram is a schematic cross-sectional view of the assembly of the plug connector of the fourth diagram; the sixth diagram is the connection of the plug connector of the second embodiment of the present invention A perspective exploded view of the head; a seventh view is a perspective view of the insulating body and the elastic plate in the sixth view; a eighth view is an exploded perspective view of the sixth figure further assembled; a ninth view is a schematic cross-sectional view of the plug connector; and a tenth view is A schematic cross-sectional view of the plug connector at another angle; the eleventh view is an exploded perspective view of the connector of the plug connector according to the third embodiment of the present invention; the twelfth view is an exploded perspective view at another angle of the eleventh view The thirteenth figure is an exploded perspective view of the complete structure of the plug connector of the eleventh figure; the fourteenth to seventeenth figures are four improved structures of the metal shell; the eighteenth figure is the plug terminal of each embodiment With socket connector Schematic diagram of the connection; the nineteenth figure is an improved structure of the plug terminal; the twentieth figure is an exploded perspective view of the connector of the plug connector according to the fourth embodiment of the present invention; the twenty-first figure is the twentieth figure Further assembled perspective exploded view; Figure 22 is a perspective exploded view of the complete structure of the plug connector of Figure 20; Figure 23 is a perspective view of the further assembly of Figure 22; and Figure 24 is a Figure 23 is a schematic cross-sectional view of the plug connector after assembly.

The first to fifth figures show the plug connector 400 of the first embodiment. The plug connector 400 can be inserted into the corresponding socket connector in both directions. The plug connector 400 includes an insulating body 402. The insulating body 402 defines a receiving cavity 404 penetrating forward, and two rows of terminals 406 are assembled in the insulating body 402. The two rows of terminals 406 are arranged on both sides of the receiving cavity 404, respectively, and include a contact portion 4061 extending forward into the receiving cavity 404 and connecting pins extending backward from the insulating body 402. A U-shaped one-piece locking member 412 is fixed in the insulating body 402. The locking member 412 is located in front of the positioning member 407. A pair of locking arms 413 of the locking member 412 extend into the receiving cavity 404, and a metal casing 414 Covered on the outer surface of the insulating body 402, a pair of metal elastic plates 420 for preventing electromagnetic interference is sandwiched between the insulating body 402 and the metal casing 414. The elastic plate 420 includes an inwardly bent portion and extends into the receiving cavity. At least two contact arms 428 of 404 are located in front of the contact portion 4061 of the terminal 406. The connecting pins of the terminal 406 are positioned by the positioning member 407, and the rear of the positioning member 407 receives the front portion of the internal circuit board 410. One cable 416 includes a plurality of core wires 418, and the core wires 418 are soldered to the rear of the internal circuit board 410. The main improvement point of this embodiment lies in the metal elastic plate 420. The elastic plate 420 is a frame structure, which includes a front contact area 421a and a rear fixed area 421b. The rear fixed area 421b is a beam structure. The front contact area 421a is The door-shaped structure has two sides connected to the front edges of the two ends of the beam, and has a slanted extension in the direction of the receiving cavity 404 as a whole to have a certain elasticity. Compared to the structure of the previous application, the elastic plate 420 of this embodiment does not have a side fixing area. On the contrary, the elastic plate 420 is provided with fixing holes 422 at its end edges, and the fixing holes 422 are located at both end edges of the rear fixing area 421b for insulation. The body 402 is provided with a fixing block 426 fixed in the fixing hole 422 at the corresponding position. In this way, the material of the insulating body 402 need not be reduced, thereby ensuring that the relatively thin insulating body 402 has a certain strength. In addition, three contact arms 428 extend from the front contact area 421a. The contact arms 428 are bent inward and extend into the front end of the receiving cavity 404. The insulating body 402 has a pair of opposite side walls 403 forming the receiving cavity 404. The through holes 405 for the contact arms 428 to pass through are independent and not connected with each other. In this way, minimizing digging holes ensures that the relatively thin insulating body 402 has sufficient strength. At the same time, the insulating sheet 430 was changed from the original 0.05 mm thick to a 0.1 mm thick plastic sheet. The contact arm 428 is bent from front to back at the front edge of the front contact area 421a, and is located in front of the contact portions 4061 of the two rows of terminals 406. The shape of the contact arm 428 is different from the cantilever beam structure extending from the front to the front, which can be avoided. Risk of a short circuit when the contact arm 428 contacts the terminal contact portion 4061 during the extension. The plug connector 400 further includes a A first metal case 441, a second metal case 442 that is wrapped outside the cable 416, a first insulating case 443 that is injection molded outside the first metal case 441, a second insulating case 444 that is injection molded outside the second metal case 442, and The insulating casing 445 of the metal shell 414, the first insulating shell 443, and the second insulating shell 444 is injection-molded to form a complete cable connector 400.

The sixth to tenth figures show the plug connector 200 of the second embodiment. The plug connector 200 includes an insulating body 212, two rows of terminals 218, and a metal shell 216. The insulating body 212 has a bag-shaped front end, and the bag-shaped front end is provided with a rectangular receiving cavity 214 penetrating forward. The metal housing 216 is tightly packed. Covers the outer surface of the insulating body 212. The side walls 2121 of the insulating body 212 on both sides of the receiving cavity 214 are provided with terminal slots 232 penetrating the inner and outer surfaces thereof. The upper and lower rows of terminals 218 are provided in the terminal slots 232 on both sides of the receiving cavity 214 and include extending into the receiving cavity 214. The contact portions 220 and the connecting pins 221 of the insulating body 212 extend from each other. The upper and lower rows of terminals 218 are symmetrically arranged diagonally, so that they can be inserted into the corresponding socket connectors in both directions. A pair of metal elastic plates 222 for preventing electromagnetic interference is disposed inside the metal casing 216, and each elastic plate 222 is sandwiched between the metal casing 216 and the insulating body 212, and includes a rear fixing area 224 and an elastic arm 226. The rear fixing area 224 is a cross-beam structure provided laterally (that is, a direction perpendicular to the docking direction). The lateral ends of the fixing area 224 are provided with fixing holes 225. The two ends of the insulating body 212 are provided with fixing holes fixed in the fixing holes 225 at corresponding positions. Fixed block 219. The elastic arm 226 extends inward from the front inner edge of the rear fixed area 224, that is, the two elastic arms 226 extend laterally opposite to each other and are arranged substantially parallel to the rear fixed area 224. The free end of the elastic arm 226 is bent to form a contact arm 227 The contact arm 227 is formed by bending backward from the front edge of the free end of the elastic arm 226. The contact arm 227 extends from the elastic arm 226 in the front-rear direction and is located in front of the terminal contact portion 220. The improvement of this embodiment is that the elastic arm 226 first extends in a lateral direction perpendicular to the front-rear direction / butting direction, so that it can occupy less space of the insulating body 212, and at the same time, the outer surface of the side wall 2121 of the insulating body 212 is in the terminal slot 232. A shallow recessed area 215 is provided in front of the receiving arm 226 and a rear fixed area 224, and a corresponding through hole 2151 is provided at the corresponding contact arm 227. The through hole 2151 extends through the receiving arm 227 into the receiving cavity 214. To reduce the hollowing out of the insulating body 212, thereby ensuring that the insulating body 212 has a certain strength. A pair of insulating sheets (not shown) are provided on two outer surfaces of the side wall of the insulating body 212 to isolate the terminal contact portion 220 and the metal case 216 from each other.

The other structure of the plug connector 200 is substantially the same as the first embodiment, so it is only briefly introduced. The terminal base 234 is located behind the insulating body 212, and is provided with a plurality of pin slots 235 for the terminal connecting pins 221 to extend rearward. The terminal base A recess 236 is formed on the rear surface of 234 to accommodate internal circuits At the front end of the board 238, the terminal pins 221 pass through the pin slots 235 and are soldered to the internal circuit board 238. The terminal block 234 includes a lateral partition plate 233 extending forward. The terminal base 234 and the insulating body 212 are fixed together by interference fit. The two sides of the rear end of the transverse partition plate 233 are mostly inserted into the side grooves 213 of the insulating body 212 to play a better fixing and positioning role. A U-shaped metal lock fastener 239 is a flat structure formed by direct stamping of a metal plate. It is assembled into the plug insulation body 212 from back to front. The lateral sides of the receiving cavity 214 are provided with side grooves 213. The lock fastener 239 There are a pair of latching arms 240 received in the side groove 213, and the latching arms 240 are respectively located on two lateral sides of the receiving cavity 214. When assembling, the locking member 239 is first inserted into the side groove 213, and then the lateral partition 233 of the terminal base 234 is inserted, and the lateral partition 233 is located behind the locking arm 240.

The eleventh to thirteenth figures show the plug connector 500 of the third embodiment. The basic structure of the plug connector 500 is substantially the same as that of the plug connector 200 of the second embodiment. The same parts are not described again, and the differences are mainly introduced. point. The first improvement is that the locking member 534 of the plug connector 500 extends two connecting legs 538 behind the locking arm 536 opposite to each other, and the two connecting legs 538 are vertically offset, so that they can pass through the terminal base 532 The pin holes 531 are respectively connected to the upper and lower surfaces of the internal circuit board 524. A second improvement is that a pair of elastic arms 527 of the metal elastic plate 526 are provided with contact arms 528 extending from front to rear, and another contact arm 529 extending from rear to front is provided in the rear fixed area of the beam structure. The contact arms 529 are located between the contact arms 528 and spaced from each other. The side wall 5121 of the insulating body is correspondingly provided with two shallow recessed areas 513 and three through holes 515 for the elastic arm 527. The through holes 515 are used for the contact arms 528 and 529 to pass into the receiving cavity 516. Compared with the third embodiment, The contact arm 529 increases the contact area, and at the same time, because the lateral length of the elastic arm 527 is shorter, the setting of the shallow concave region is reduced, thereby ensuring the strength of the insulating body. A third improvement is that the metal casing 514 is manufactured by deep drawing technology, the side wall of the metal casing 514 is seamlessly connected, and the docking portion and the fixed portion of the metal casing 514 are seamlessly connected. A fourth improvement is that the cable 540 is connected to the internal circuit board 524 through the positioning member 544. In addition, the role of the insulating sheet 530 is the same as that of the insulating sheet 430 in the first embodiment, and both are used to isolate the contact portion of the terminal and the metal housing 514 from each other.

The fourteenth to seventeenth figures are various improved structures of the metal shell of the third embodiment, all of which are manufactured by the drawing technology. This technology forms a seamless structure, which can well ensure the plug connector connection. Strength, especially when there are many parts of the plug connector, and the strength of the insulation body is weak. Referring to FIG. 14, the metal casing 11 includes a capsule-shaped docking portion 111 and a fixing portion 112. The docking portion 111 is a seamless tube, and the fixing portion 112 is also a seamless tube. The docking portion 111 and the fixing portion 112 are an integrated structure, and are fixed. The portion 112 is located at the rear end of the butting portion 111 and is larger in size than the butting portion 111. The fixing portion 112 is fixed to the outside of the terminal base. The long side 1121 of the fixing portion 112 is provided with outwardly inclined retaining pieces 1123 and 16c. The holding pieces 1123 and 16c can be fixed to the holding holes of the metal shell. The holding pieces 1123 and 16c tear from the long side 1121 and then tilt outward. Referring to the fifteenth figure, another improved structure is that the holding piece 1123 extends directly backward from the long side 1121 without any tearing. The fixed portion 112 is provided with a U-shaped notch 1126 penetrating rearwardly on its long side 1121 and a short side 1122 There is a notch 1127 penetrating backwards. Due to the large size of the fixing portion 112, it is easy to break during deep drawing. The notches 1126 and 1127 penetrating through the fixing portion 112 can prevent the fixing portion 112 from breaking as much as possible. The size of the notch 1126 is larger than the notch 1127. The gap 1127 is large. Referring to the sixteenth figure, another improved structure is that the holding piece 1124 extends directly backward from the long side without any tearing. The long side is provided with a plurality of notches 1128 penetrating backward, and the notches 1128 are gap-shaped. Referring to the seventeenth figure, the improved structure disclosed is due to the large size of the fixed portion 113, which is not easy to draw, so the improvement point is that the fixed portion 113 is a pair of long sides 1131 and a pair of short sides 1132 formed by bending. The short sides 1131 and 1132 are independent from each other, and the long side 1131 is provided with a holding piece 1133.

The eighteenth and nineteenth figures show the improved structure of the terminal of the plug connector, especially the improvement of the structure of the power terminal. The contact portions of the upper and lower row terminals (including the signal terminal, the ground terminal, or the power terminal) of each of the above embodiments have a V-shaped front end, so as to form a contact point at the V-shaped vertex, which scratches the contact with the socket terminal. The eighteenth figure shows a process in which the elastic power terminal 600 of the plug connector contacts the socket power terminal 700 of the butt tongue of the socket connector. The plug power terminal 600 is provided with an inclined contact point 602 at a V-shaped vertex. The upper black area shows the vulnerable area where the contact point 602 is most likely to be damaged due to scratching contact during the plugging process. The position indicated by the letter A (that is, when the terminal first contacts) is the time when the contact point 602 is most stressed. That is, when it is most vulnerable to damage, the contact point 602 contacts the socket terminal when the same plug power terminal 600 finishes contacting the socket power terminal at the position indicated by the letter B. Please note that in the socket connector, the signal terminal 702 is shorter than the power terminal 700, that is, the most vulnerable point at the front end is located behind the power terminal. It is clear that there is an arc-shaped vulnerable area at the contact point 602, so that the connection effect is not good enough. The nineteenth figure shows that the contact part is improved. The plug power terminal 610 has a cantilever-shaped contact part, and the front end of the contact part forms a bowl-shaped structure, that is, the contact part has a vulnerable point 612 and a contact point 614. The contact point 614 is located at Behind the vulnerable point 612, at the earliest contact point, the vulnerable point 612 contacts the socket power terminal 700 first, and at the full contact, the contact point 614 contacts the socket power terminal 700. Thus, the contact point 614 is separated from the vulnerable point 612 before and after, The distance is about 0.75 mm. In the free state, the contact point 614 and the vulnerable point 612 are roughly located At the same horizontal plane, the line connecting the two is tilted back and forth after fully touching. In this embodiment, if the signal terminal has a V-shaped structure, the contact point between the signal terminal and the contact point of the bowl-shaped structure is about 0.5 mm.

Figures 20 through 24 show a plug connector 300 according to a fourth embodiment. The plug connector 300 includes an insulating body 302, two rows of terminals 306, a metal housing 314, and a pair of independent locking members. 318. The insulating body 302 is provided with a receiving cavity 304. Two rows of terminals 306 are assembled in the insulating body 302 and arranged on both sides of the receiving cavity 304. The terminal includes a contact portion 305 extending forward into the receiving cavity 304 and a connection extending backward from the insulating body 302. Feet 307. The main improvement of this embodiment is that the lock fastener 318 is a pair of independent lock fastener structures, rather than a U-shaped one-piece lock fastener. Each of the locking members 318 includes a forwardly extending elastic locking arm 323 and a connecting leg 326 extending out of the insulating body 302. A front end of the locking arm 323 has a locking head 324 protruding into two lateral ends of the receiving cavity 304. The insulating body 302 is provided with side grooves 320 located at two lateral ends of the receiving cavity. The side grooves 320 extend back and forth, and the lock members are received in the side grooves 320. A fixing portion 322 is provided between the locking arm 323 and the connecting leg 326 of each locking member 318. The upper and lower edges of the fixing portion 322 have barbs that are fixed to the insulating body 302 by interference. The locking members 318 are fixed to Inside the side groove 320. The side groove 320 penetrates the insulating body 302 backwards, so the locking member 318 is assembled into the side groove 320 from the back to the front. The side groove 320 penetrates the inner and outer end surfaces of the insulating body 302 in the lateral direction, so the outer side of the locking arm 323 325 contacts the metal case 314 as shown in the twenty-fourth figure. The connecting leg 326 at the rear end of each locking member 318 is a fork-shaped structure, which is clamped on the front edge of the internal circuit board 308 and further fixed by welding. The metal casing 314 is covered on the outer surface of the insulating body 302. A pair of metal elastic plates 316 are mounted on the insulating body 302 and sandwiched between the insulating body 302 and the metal casing 314. The connecting pins 307 of the terminal 306 are soldered to the front of the internal circuit board 308. The front end of the internal circuit board 308 is provided at the rear end of the insulating body 302. One cable 310 includes a plurality of core wires 312, and the core wires 312 are soldered to the internal circuit board 308 The back. It can be understood that the locking member 318 is formed by bending a metal plate, and the abutting direction of the locking head 324 is perpendicular to the plane of the metal plate. This locking member structure can allow relatively large tolerance. The rear edge of the metal casing 314 is provided with a pair of opposite rear edge pieces 329. Each of the rear edge pieces 329 has a holding piece 330, and the holding piece 330 is used for contacting with the metal shell that is wrapped outside the internal circuit board 308. The holding holes 331 are fixed to each other.

In summary, the present invention has indeed met the requirements for an invention patent, and a patent application has been filed in accordance with the law. However, the above is only a preferred embodiment of the present invention, and the scope of rights of the present invention cannot be limited by this. For example, equivalent modifications or changes made by those with ordinary knowledge in the technical field based on the spirit of the present invention are still covered by the scope of the attached patent application.

Claims (10)

A plug connector includes an insulating body, two rows of terminals, a metal shell, and a metal elastic plate; the insulating body is provided with a receiving cavity penetrating forward, and the two rows of terminals are respectively arranged on both sides of the receiving cavity and include The contact portion extending forward into the receiving cavity and the connecting feet of the insulating body extending backward; the metal case is wrapped on the outer surface of the insulating body, and the elastic plate is clamped between the insulating body and the metal case. Wherein, the elastic plate includes at least two contact arms extending into the receiving cavity, the contact arms are located in front of the contact portion of the terminal; the insulating body has a pair of opposite side walls forming the receiving cavity, The side wall is provided with through-holes through which the contact arms pass, and the through-holes are independent and not communicate with each other. The plug connector according to item 1 of the scope of patent application, wherein the elastic plate is provided with a fixing hole, and the insulating body is provided with a fixing block fixed in the fixing hole at a corresponding place. The plug connector according to item 1 of the scope of patent application, wherein the contact arm is bent and then extended from front to rear. The plug connector according to item 1 of the patent application scope, wherein the elastic plate includes a rear fixing area and a front contact area, and both sides of the front contact area are connected to both ends of the rear fixing area. The contact arm is bent and extended from the front edge of the front contact area. The plug connector according to item 1 of the scope of patent application, wherein the elastic plate includes a rear fixing area and a pair of elastic arms extending laterally and relatively from the rear fixing area, and the elastic arm is in line with the rear fixing area. They are arranged in parallel; one contact arm extends from each elastic arm. A plug connector includes an insulating body, two rows of terminals, a metal shell, and a metal lock; the insulating body is provided with a receiving cavity penetrating forward, and the two rows of terminals are arranged on both sides of the receiving cavity And it includes a contact portion extending forward into the receiving cavity and a connecting leg extending backward out of the insulating body; the metal shell is wrapped on the outer surface of the insulating body; wherein the locking member includes a pair of extending into The latching arm of the docking cavity and two connecting legs extending from the rear thereof, and the connecting legs are vertically offset. The plug connector according to item 6 of the scope of patent application, wherein the plug connector includes an internal circuit board, and the two connecting pins of the locking member are respectively connected to the upper and lower surfaces of the internal circuit board. A plug connector includes an insulating body, two rows of terminals, a metal shell, and a pair of independent locking members; the insulating body is provided with a receiving cavity penetrating forward, and the two rows of terminals are respectively arranged in the receiving body. Both sides of the receiving cavity and including a contact portion extending forward into the receiving cavity and connecting feet extending backward from the insulating body; the metal shell is wrapped on the outer surface of the insulating body; wherein each of the locks The piece includes an elastic locking arm extending forward, a connecting leg extending out of the insulating body, and a fixing portion located between the locking arm and the connecting leg. The front end of the locking arm has a protruding protrusion. The lock heads at the two lateral ends of the receiving cavity, and the upper and lower edges of the fixing portion are provided with barbs that interfere with and fix to the insulating body. The plug connector according to item 8 of the scope of patent application, wherein the insulating body is provided with side grooves located at two lateral ends of the receiving cavity, the side grooves extend back and forth, and the locking members are assembled into the side grooves from back to front And fixed in the side groove by the barb interference. The plug connector according to item 8 of the scope of patent application, wherein the connecting leg is a fork-shaped structure.