CN204558745U - plug connector - Google Patents

Abstract

A plug connector comprises an insulating body, two rows of terminals, a metal shell and a metal elastic plate; the insulation body is provided with a containing cavity which penetrates forwards, and the two rows of terminals are respectively arranged at two sides of the containing cavity and comprise a contact part which extends forwards into the containing cavity and a connecting pin which extends backwards out of the insulation body; the metal shell is wrapped on the outer surface of the insulating body, and the elastic plate is clamped between the insulating body and the metal shell; the elastic plate comprises at least two contact arms which are bent inwards and extend into the containing cavity, and the contact arms are positioned in front of the contact parts of the terminals; the insulating body is provided with a pair of opposite side walls forming a containing cavity, the side walls are provided with through holes for the elastic arms to pass through, and the through holes are independent and not communicated with each other. The utility model discloses an elastic plate and through-hole structure are favorable to guaranteeing insulator's intensity.

Description

plug connector

【Technical field】

The utility model relates to a plug connector.

【Background technique】

US Patent Application Publication No. 20130095702A1 discloses a bidirectional plug connector. The plug connector has a plug connector with opposite upper and lower surfaces, and a plurality of conductive socket terminals are arranged on the upper and lower surfaces. The conductive socket terminals exposed on the upper and lower surfaces are symmetrically spaced apart from each other, and the shape of the connecting head is approximately 180-degree symmetric, so that it can be inserted into the corresponding socket connector in 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 forward or backward, so as to start the corresponding follow-up procedure. When the number of receptacle terminals in the connector increases, the switching circuit becomes more complicated, so it does not conform to the trend. At the same time, the plug connector is an exposed plug, and there is still a possibility of plugging damage in actual use.

Our company actively develops a new type of plug connector that can be inserted into the socket connector in both directions. At the same time, the two connectors can transmit high-frequency signals. Interfering plug connectors and socket connectors, and there are many components in plug connectors and socket connectors, but the size of the connectors is small, which brings certain difficulties to product manufacturing and strength.

【Content of utility model】

The technical problem to be solved by the utility model is to provide a plug connector with good strength.

In order to solve the above technical problems, the utility model can adopt the following technical solutions: a plug connector, which includes an insulating body, two rows of terminals, a metal shell and a metal elastic plate; The row terminals are respectively arranged on both sides of the housing cavity and include contact parts extending forward into the housing cavity and connecting feet extending backward out of the insulating body; the metal shell is covered on the outer surface of the insulating body, and the elastic plate is clamped on the Between the insulating body and the metal shell; the elastic plate includes at least two contact arms bent inwards and 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 forming the receiving cavity Opposite to the side wall, the side wall is provided with a through hole through which the elastic arm passes, and the through holes are independent and not communicated with each other.

Compared with the prior art, the elastic plate and the through-hole structure of the utility model can reduce the hollowing out of the insulating body material, which is beneficial to ensure the strength of the insulating body.

【Description of drawings】

FIG. 1 is an exploded perspective view of a connector head of a plug connector according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of FIG. 1 from another angle.

FIG. 3 is an exploded perspective view of further assembly of FIG. 1 .

FIG. 4 is an exploded perspective view of the complete structure of the plug connector in FIG. 1 .

FIG. 5 is a schematic cross-sectional view of the assembled plug connector of FIG. 4 .

FIG. 6 is an exploded perspective view of the connector of the plug connector according to the second embodiment of the present invention.

FIG. 7 is a perspective view of the insulating body and the elastic plate in FIG. 6 .

FIG. 8 is an exploded perspective view of FIG. 6 for further assembly.

FIG. 9 is a schematic cross-sectional view of the plug connector.

FIG. 10 is a schematic cross-sectional view of another angle of the plug connector.

FIG. 11 is an exploded perspective view of the connector of the plug connector according to the third embodiment of the present invention.

FIG. 12 is an exploded perspective view of FIG. 11 from another angle.

FIG. 13 is an exploded perspective view of the complete structure of the plug connector in FIG. 11 .

Figures 14-17 show four improved structures of metal shells.

Fig. 18 is a schematic diagram of the mating of the plug terminal and the receptacle connector in various embodiments.

Fig. 19 is an improved structure of the plug terminal.

FIG. 20 is an exploded perspective view of the connector of the plug connector according to the fourth embodiment of the present invention.

FIG. 21 is an exploded perspective view of FIG. 20 for further assembly.

FIG. 22 is an exploded perspective view of the complete structure of the plug connector in FIG. 20 .

FIG. 23 is a perspective view of FIG. 22 further assembled.

FIG. 24 is a schematic cross-sectional view of the assembled plug connector of FIG. 23 .

The following specific embodiments will further illustrate the utility model in conjunction with the above-mentioned accompanying drawings.

【Detailed ways】

1 to 5 show the plug connector 400 of the first embodiment. The plug connector 400 can be plugged into the corresponding receptacle connector in both forward and reverse directions. The plug connector 400 includes an insulating body 402 , the insulating body defines a receiving cavity 404 penetrating forward, and two rows of terminals 406 are assembled in the insulating body 402 . Two rows of terminals are respectively arranged on two sides of the receiving cavity, and they include a contact portion 4061 extending forward into the receiving cavity 404 and a connecting leg extending backward out of the insulating body. A U-shaped one-piece locking piece 412 is fixed in the insulating body, the locking piece 412 is located in front of the positioning piece 407, a pair of locking arms 413 of the locking piece 412 extend into the receiving cavity 404, and a metal shell 414 wraps Covering the outer surface of the insulating body 402, a pair of metal elastic plates 420 for preventing electromagnetic interference are clamped between the insulating body 402 and the metal shell 414. The elastic plates 420 are bent inward and extend into the receiving cavity 404 At least two contact arms 428 are located in front of the contact portion 4061 of the terminal. The connecting pins of the terminals 406 are positioned by the locating member 407 , and the rear of the locating member accommodates the front part of the internal circuit board 410 . A cable 416 includes several core wires 418 soldered to the rear of the internal circuit board 410 . The main improvement 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 is a beam structure, and the front contact area is The door-shaped structure has two sides connected to the front edges of the two ends of the crossbeam, and the whole is obliquely extended toward the storage chamber to have a certain degree of elasticity. Compared with 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 the two ends of the rear fixing area 421b. The insulating body is provided with a fixing block 426 fixed in the fixing hole 422 at the corresponding position, so that the material of the insulating body does not need to be reduced, thereby ensuring that the relatively thin insulating body has a certain strength. In addition, three contact arms 428 extend from the front elastic region 421a, and the contact arms 428 are bent inwardly 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 side walls 403 There are through holes 405 for the contact arms 428 to pass through. The through holes 405 are independent and not connected to each other. In this way, the digging of holes is minimized and the relatively thin insulating body has sufficient strength. Simultaneously, the insulating sheet 430 is changed from the original 0.05 mm thick plastic sheet to a 0.1 mm thick plastic sheet. The contact arm 428 is bent from front to rear at the front edge of the front contact area, and it is located in front of the contact portion 4061 of the two rows of terminals. There is a risk of a short circuit in which the arm 428 comes into contact with the terminal contact portion 4061 during extension. The plug connector 400 also includes a first metal shell 441 covering the outside of the internal circuit board, a second metal shell 442 covering the outside of the cable 416, a first insulating shell 443 injected outside the first metal shell 441, and an injection molded The second insulating shell 444 outside the second metal shell and the insulating jacket 445 injection-molded on the metal shell, the first insulating shell 443 , and the second insulating shell 444 form a complete cable connector 400 .

6-10 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 has a sac-shaped front end, and the sac-shaped front end is provided with a rectangular receiving cavity 214 penetrating forward. The metal shell 216 tightly covers the on the outer surface of the insulating body 212 . The sidewalls 2121 of the insulating body 212 located on both sides of the storage cavity are provided with terminal slots 232 penetrating through the inner and outer surfaces thereof, and the upper and lower rows of terminals 218 are arranged in the terminal slots 232 located on both sides of the storage cavity, which include contacts extending into the storage cavity. part 220 and connecting pins 221 extending out of the insulating body, wherein the upper and lower rows of terminals are arranged diagonally and symmetrically, so that they can be inserted into the corresponding socket connectors in both forward and reverse directions. A pair of metal elastic plates 222 that prevent electromagnetic interference are arranged on the inner side of the metal shell 216, and each elastic plate 222 is clamped between the metal shell 216 and the insulating body 212, which includes a rear fixing area 224 and an elastic Arm 226. The rear fixing area 224 is a beam structure arranged transversely (that is, the direction perpendicular to the docking direction). Fixing holes 225 are provided at both ends of the transverse direction. Fixed block 219 . The elastic arms 226 extend inwardly from the front inner edge of the rear fixing area 224, that is, the two elastic arms 226 extend opposite to each other in a transverse direction, and are roughly parallel to the rear fixing area 224. The free ends of the elastic arms are 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 along 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 along the transverse direction perpendicular to the front-to-back direction/butting direction, so that less space can be occupied in the insulating body 212, and the outer surface of the side wall 2121 of the insulating body is in the terminal groove 232. A shallow concave area 215 for accommodating the elastic arm 226 and the rear fixing area 224 is provided in front of the front part, and a through hole 2151 independent of each other is provided at the corresponding contact arm 227, and the through hole allows the contact arm 227 to pass through and extend into the receiving cavity 214 , reduce the hollowing out of the insulating body, thereby ensuring that the insulating body 212 has a certain strength. A pair of insulating sheets (not shown) are disposed on two outer surfaces of the sidewall of the insulating body 212 for isolating the terminal contact portion 220 and the metal shell 216 from each other.

The other structures of the plug connector 200 are roughly the same as those of the first embodiment. For a brief introduction, the terminal base 234 is located behind the insulating body 212 and is provided with a plurality of pin grooves 235 for the terminal pins 221 to extend backward. A recess 236 is formed on the rear surface of 234 for accommodating the front end of the internal circuit board 238 , and the terminal pins 221 pass through the pin slots 235 and are soldered to the internal circuit board 238 . The terminal block includes a forwardly extending transverse partition 233 . The terminal base 234 and the insulating body 212 are fixed together by mutual interference fit. Most of the two sides of the rear end of the transverse partition 233 are inserted into the side slots 213 of the insulating body, so as to play a better role of fixing and positioning. A U-shaped metal lock piece 239 is a flat structure formed by direct punching of a metal plate, which is assembled into the plug insulation body from the rear to the front. Side grooves 213 are provided on both sides of the docking cavity. The lock piece 239 has a For the locking arm 240 accommodated in the side groove 213, the locking arm is respectively located on two lateral sides of the docking cavity. When assembling, the locking member 239 is inserted into the side slot 213 first, and then the transverse partition 233 of the terminal base 234 is inserted, and the transverse partition is located behind the locking arm.

11 to 13 show the plug connector 500 of the third embodiment. The basic structure of the plug connector is substantially the same as that of the plug connector 200 of the second embodiment. The same parts will not be introduced, and the differences will be mainly introduced. The first point of improvement is that the locking member 534 of the plug connector extends two connecting feet 538 at the relative rear of the locking arm 536. The pin holes 531 are respectively connected to the upper and lower surfaces of the internal circuit board. The second improvement is that the ends of the pair of elastic arms 527 of the metal elastic plate 526 are provided with a contact arm 528 extending from the front to the rear, and the rear fixing area of the beam structure is provided with another contact arm 529 extending from the rear to the front. Another contact arm 529 is located between the contact arms 528 and spaced apart from each other. The side wall 5121 of the insulating body is correspondingly provided with two shallow concave areas 513 and three through holes 515 for the elastic arms 527 to be provided. The through holes 515 allow the contact arms 528, 529 to pass through and enter the receiving cavity 516, compared with the third embodiment , the contact arm 529 increases the contact area, and at the same time because the transverse length of the elastic arm is relatively short, there are fewer shallow recessed areas, so as to ensure the strength of the insulating body. The third improvement is that the metal shell 514 is manufactured by deep drawing technology, the side walls of the metal shell are seamlessly connected, and the butt joints and fixing portions of the metal shell are both seamlessly connected. The fourth improvement is that the cable 540 is connected to the internal circuit board 524 through the positioning member 544 .

Figures 14-17 show the improved structure of the metal shell of the third embodiment, which are all manufactured by drawing technology. This technology forms a seamless structure that can well ensure the strength of the plug connector connector, especially in the plug connection. When there are many components in the device and the strength of the insulation body is weak. Referring to FIG. 14 , the metal shell 11 includes a capsule-shaped docking portion 111 and a fixing portion 112 , the docking portion is in the shape of a seamless tube, and the fixing portion is also in the shape of a seamless tube. The docking part 111 and the fixing part 112 are integrally structured. The fixing part 112 is located at the rear end of the docking part 111 and its size is larger than that of the docking part. The fixing part 112 is fixed on the outside of the terminal base. The fastening pieces 1123, 16c can be fixed with the fastening holes of the metal shell, and the fastening pieces 1123 are torn from the long side 1121 and then tilted outward. Referring to Fig. 15, the buckling piece 1123 extends directly backward from the long side 1121 without any tearing. The fixing part 112 is provided with a U-shaped notch 1126 penetrating backward on the long side 1121, and a U-shaped notch 1126 penetrating backward on the short side 1122. The notch 1127 of the fixed part is large in size, and it is easy to break during deep drawing. The notches 1126 and 1127 that penetrate backward through the fixed part can avoid the breakage of the fixed part as far as possible. The size of the notch 1126 is larger than that of the notch 1127, and the notch 1127 is a gap shape. Referring to FIG. 16 , the fastening piece 1124 extends backward directly from the long side without any tearing, and the long side is provided with a plurality of notches 1128 penetrating backward, and the notches 1128 are in the shape of slits. Referring to Fig. 17, because the size of the fixed part is large, it is not easy to draw, so the improvement point is that the fixed part 113 is a pair of long sides 1131 and a pair of short sides 1132 formed by bending, and the long and short sides are independent of each other. , and a fastening piece 1133 is provided on the long side.

Figures 18-19 show the improved terminal structure of the plug connector, especially the improved structure of the power terminal. The contact parts of the upper and lower rows of terminals (including signal terminals and ground terminals or power terminals) in the above-mentioned embodiments have a V-shaped front end, thereby forming a contact point at the V-shaped apex, which scrapes and contacts the socket terminals, see FIG. 18, Figure 18 shows the contact process between the elastic power terminal 600 of the plug connector and the socket power terminal 700 of the mating tongue of the socket connector. The plug power terminal 600 is provided with an inclined contact point 602 located at the V-shaped apex, and the black area on the figure shows In the insertion process, the contact point 602 is most vulnerable to damage due to scratching contact. The position indicated by the letter A (that is, when the terminal first contacts) is the time when the contact point 602 is under the greatest force, that is, the most When it is easy to be damaged, when the same plug power terminal 600 completes contact with the socket power terminal at the position indicated by the letter B, the contact point 602 contacts the socket terminal. Please note that in the receptacle connector, the signal terminal 702 is shorter than the power terminal 700, that is, the most vulnerable point at the front is located behind the power terminal. It is clear that there is an arc-shaped vulnerable area in the contact point 602, so that the effect of the connection is not good enough. Figure 19 shows that the contact part has been 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. Behind the point 612, the easily damaged point 612 first contacts the socket power terminal 700 during the earliest contact, and the contact point 614 contacts the socket power terminal 700 when fully contacted. In this way, the contact point and the vulnerable point are separated from each other with a distance of about 0.75 mm. In the free state, the contact point and the vulnerable point are roughly located on the same horizontal plane, and the connection line between the two tilts forward and backward after full contact. In this embodiment, if the signal terminal has a V-shaped structure, the distance between its contact point and the contact point of the bowl-shaped structure is about 0.5 mm.

20 to 24 disclose 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 shell 314 and a pair of latches 318 independent of each other. The insulating body 302 is provided with a housing cavity 304, two rows of terminals are assembled in the insulating body 302 and arranged on both sides of the housing cavity 304, which includes a contact portion 305 extending forward into the housing cavity 302 and a connecting portion extending backward out of the insulating body 307. The main improvement point of this embodiment is that the locking parts 318 are a pair of locking parts independent of each other, rather than a U-shaped one-piece locking part; each locking part 318 includes an elastic lock extending forward The locking arm 323 and the connecting pin 326 extending out of the insulating body, the front end of the locking arm 323 has locking heads 324 protruding into the lateral ends of the receiving cavity. The insulating body 302 is provided with side grooves 320 located at two lateral ends of the accommodating cavity. The side grooves 320 extend forward and backward, and the locking member is accommodated in the side grooves 320 . A fixing part 322 is provided between the locking arm 323 and the connecting foot 326 of each locking part. The upper and lower edges of the fixing part have barbs fixed on the insulating body by interference, and the locking parts are fixed in the side groove 320 through the barb interference. . The side slot 320 runs through the insulating body backwards, so the locking member 318 is assembled into the side slot from back to front, and the side slot runs through the inner and outer end surfaces of the insulating body in the transverse direction, so the outer surface 325 of the locking arm contacts the metal shell Body 314, as shown in FIG. 24 . The connecting pin at the rear end of each locking member 318 is a fork-shaped structure, clamped on the front edge of the internal circuit board 308, and further fixed by welding. The metal shell 314 covers the outer surface of the insulating body 302, and a pair of metal elastic plates 316 are mounted on the insulating body and clamped between the insulating body and the metal shell. The connecting pin 307 of the terminal is welded on the front part of the internal circuit board 308, and the front end of the internal circuit board is arranged on the rear end of the insulating body. department. It can be understood that the locking member 318 is formed by bending a metal plate, and the abutment direction of the locking head 324 is perpendicular to the plane of the metal plate. tolerance. The rear edge of the metal shell 314 is provided with a pair of opposite rear edge pieces 329, and each rear edge piece 329 has a buckling piece 330, and the buckling piece is used for buckling with the metal shell covering the inner circuit board shell The hole 331 is fixed.

The above-mentioned embodiments are preferred implementation modes of the present utility model. Rather than all implementation modes, any equivalent changes to the technical solution of the utility model adopted by persons of ordinary skill in the art by reading the description of the utility model are covered by the claims of the utility model.

Claims (10)

1. 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 chamber that penetrates forward, and the two rows of terminals are respectively arranged on both sides of the receiving chamber and it includes a The contact part extending into the receiving cavity in the front and the connecting foot extending out of the insulating body backward; the metal shell is covered on the outer surface of the insulating body, and the elastic plate is clamped between the insulating body and the metal shell; it is characterized in that: The elastic plate includes at least two contact arms bent inwards and 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, and the side walls are provided with a The through holes through which the contact arms pass, these through holes are independent of each other and do not communicate. 2. The plug connector as claimed in claim 1, wherein the contact arm extends from front to rear. 3. The plug connector according to claim 2, wherein the elastic plate includes a rear fixing area and a front contact area, and the two sides of the front contact area are connected to the two ends of the rear fixing area. The contact arm bends and extends from the front edge of the front contact area. 4. The plug connector according to claim 1, wherein the elastic plate comprises a rear fixing area and a pair of elastic arms extending transversely from the rear fixing area, the elastic arms and the rear fixing area They are arranged in parallel; the contact arm extends from the elastic arm from front to back. 5. The plug connector as claimed in claim 4, wherein the side wall is provided with a shallow recess for accommodating the elastic arm and the rear fixing area. 6. The plug connector according to claim 4 or 5, characterized in that: the rear fixing area is provided with another contact arm extending from the rear to the front, and the other contact arm is located between the pair of contact arms. and spaced apart from each other. 7. The plug connector according to claim 1 or 2, 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 position. 8. The plug connector as claimed in claim 7, wherein the elastic plate comprises a rear fixing area and a front contact area, and the fixing hole is located at a lateral end of the rear fixing area of the elastic plate. 9 . The plug connector according to claim 1 , wherein an insulating sheet is sandwiched between the metal shell and the insulating body, and the insulating sheet is a plastic sheet with a thickness of 0.1 mm. 10. The plug connector according to claim 1, wherein the metal shell is a seamless tubular structure manufactured by drawing technology.