CN109378613B

CN109378613B - Plug connector

Info

Publication number: CN109378613B
Application number: CN201811402840.5A
Authority: CN
Inventors: 叶昌旗; 郑志丕; 斯蒂芬·瑟迪欧; 苏伟豪
Original assignee: Foxconn Kunshan Computer Connector Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd
Priority date: 2014-04-09
Filing date: 2015-04-07
Publication date: 2021-02-23
Anticipated expiration: 2035-04-07
Also published as: TWI603541B; CN107681343B; TWI635658B; CN204558745U; CN104979687B; CN107681343A; TW201541729A; CN109378613A; TW201739114A; CN204558805U; CN104979687A; TWM510559U; TWM511145U

Abstract

A plug connector comprises an insulating body, two rows of terminals, a metal shell and a metal elastic plate; the insulating body is provided with a containing cavity which penetrates forwards, and the two rows of terminals are respectively arranged on 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 insulating 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 spring plate includes at least two contact arms extending into the receiving cavities, the contact arms being located forward of the contact portions 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 contact arms to pass through, and the through holes are independent and not communicated with each other. The independent through hole can ensure the risk of the elastic plate crossing off after being spliced for many times.

Description

Plug connector

This application is filed as divisional application on patent application No. 201510159745.7 filed on 07 th 4 th 2015 entitled "plug connector".

[ technical field ] A method for producing a semiconductor device

The present invention relates to a plug connector.

[ background of the invention ]

U.S. patent application publication No. 20130095702a1 discloses a two-way mating plug connector having a mating plug with opposing upper and lower surfaces with a plurality of conductive receptacle terminals disposed on the upper and lower surfaces. The conductive socket terminals exposed on the upper and lower surfaces are symmetrically spaced from each other, and the shape of the connector is approximately 180 degrees symmetrical, so that the connector can be inserted into the corresponding socket connector in the forward and reverse directions.

However, a switching circuit is required to be disposed inside the socket connector or the electronic device to detect whether the plug connector is inserted in the forward direction or the reverse direction, so as to start the corresponding subsequent procedure. The more receptacle terminals of the connector, the more complicated the switching circuit, and thus, the less desirable. Meanwhile, the plug connector is an exposed plug, and the possibility of plugging damage still exists in practical use.

The socket connector can be inserted in two opposite directions by the aid of the plug connector actively developed by the department, high-frequency signals can be transmitted by the two connectors, the plug connector and the socket connector capable of preventing electromagnetic signal interference and radio frequency interference are developed by the department in a continuous development process, parts of the plug connector and the socket connector are more, the size of the connector is smaller, and certain difficulty is brought to product manufacturing and strength.

[ summary of the invention ]

The invention aims to provide a plug connector which has good strength.

In order to solve the technical problems, the invention can adopt the following technical scheme: 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 penetrating forwards, and the two rows of terminals are respectively arranged at two sides of the containing cavity and comprise contact parts extending forwards into the containing cavity and connecting pins extending 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 method is characterized in that: the elastic plate comprises at least two contact arms extending into the accommodating 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 the accommodating cavity, the side walls are provided with through holes for the contact arms to pass through, and the through holes are independent and not communicated with each other.

Compared with the prior art, the independent through hole can ensure the risk of the elastic plate crossing after being spliced for many times.

In order to solve the technical problems, the invention can adopt the following technical scheme: a plug connector comprises an insulating body, two rows of terminals, a metal shell and a pair of independent locking parts; the insulation body is provided with a containing cavity penetrating forwards, the two rows of terminals are respectively arranged at two sides of the containing cavity and comprise a contact part extending forwards into the containing cavity and a connecting pin extending backwards out of the insulation body; the metal shell is coated on the outer surface of the insulating body; each locking fastener comprises an elastic locking fastener arm extending forwards, a connecting pin extending out of the insulating body and a fixing part located between the locking fastener arm and the connecting pin, the front end of the locking fastener arm is provided with a locking fastener head protruding into the transverse two ends of the accommodating cavity, and the upper edge and the lower edge of the fixing part are provided with barbs for interference fixation on the insulating body.

Compared with the prior art, the pair of mutually independent locking fasteners can simplify the assembly of the connector.

[ description of the drawings ]

Fig. 1 is an exploded perspective view of a connecting 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 fig. 1, further assembled.

Fig. 4 is an exploded perspective view of the complete structure of the plug connector of fig. 1.

Fig. 5 is a cross-sectional view of the plug connector of fig. 4 after assembly.

Fig. 6 is an exploded perspective view of a connecting head of a plug connector according to a second embodiment of the present invention.

Fig. 7 is a perspective view of the insulating body and the elastic plate of fig. 6.

Fig. 8 is an exploded perspective view of fig. 6, further assembled.

Fig. 9 is a cross-sectional schematic 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 a connecting head of a plug connector according to a 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 plug connector of fig. 11.

Fig. 14-17 show four modified structures of the metal shell.

Fig. 18 is a schematic view of the plug terminals of various embodiments mated with the receptacle connector.

Fig. 19 shows a modified structure of the plug terminal.

Fig. 20 is an exploded perspective view of a connecting head of a plug connector according to a fourth embodiment of the present invention.

Fig. 21 is an exploded perspective view of fig. 20, further assembled.

Figure 22 is an exploded isometric view of the completed plug connector of figure 20.

Fig. 23 is a further assembled perspective view of fig. 22.

Fig. 24 is a cross-sectional view of the plug connector of fig. 23 after assembly.

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

[ detailed description ] embodiments

Fig. 1 to 5 show a plug connector 400 according to a first embodiment, the plug connector 400 can be inserted into a corresponding receptacle connector in two directions. The plug connector 400 includes a housing 402 defining a forwardly extending cavity 404, and two rows of terminals 406 assembled within the housing 402. The two rows of terminals are respectively arranged on two sides of the accommodating cavity and include contact portions 4061 extending forward into the accommodating cavity 404 and connecting pins extending backward out of the insulating body. A U-shaped one-piece latch 412 is fixed in the insulating body, the latch 412 is located in front of the positioning member 407, a pair of latch arms 413 of the latch 412 extend into the receiving cavity 404, a metal housing 414 covers 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 housing 414, the elastic plates 420 include at least two contact arms 428 bending inward and extending into the receiving cavity 404, and the contact arms are located in front of the contact portions 4061 of the terminals. The connection legs of the terminals 406 are positioned by the positioning member 407, the rear of which receives the front of the internal circuit board 410. A cable 416 includes a plurality of core wires 418 soldered to the rear of the inner circuit board 410. The main improvement of the present embodiment is that the metal elastic plate 420 is a frame-shaped structure, and includes a front contact area 421a and a rear fixed area 421b, the rear fixed area is a beam structure, the front contact area is a door-shaped structure, two side edges of the front contact area are connected to front edges of two ends of the beam, and the whole elastic plate extends obliquely toward the receiving cavity to have a certain elasticity. Compared with the structure of the previous application, the elastic plate 420 of the present embodiment does not have the side fixing regions, and on the contrary, the elastic plate 420 is provided with the fixing holes 422 at the end edges thereof, the fixing holes 422 are located at the two end edges of the rear fixing region 421b, and the insulation body is provided with the fixing blocks 426 fixed in the fixing holes 422 at the corresponding positions, so that the material of the insulation body is not reduced, thereby ensuring that the insulation body which is originally thinner has a certain strength. In addition, three contact arms 428 extend from the front elastic region 421a, the contact arms 428 are bent inward to 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 are provided with through holes 405 for the contact arms 428 to pass through, the through holes 405 are independent and not communicated with each other, thus, the holes are reduced as much as possible, and the relatively thin insulating body has enough strength. Meanwhile, the insulating sheet 430 is a plastic sheet with a thickness of 0.1 mm instead of the original thickness of 0.05 mm. The front edge of the contact arm 428 at the front contact area is bent back and forth in front of the contact portions 4061 of the two rows of terminals and is shaped differently from the cantilevered beam structure of the previous application extending back and forth so as to avoid the risk of shorting the contact arm 428 into contact with the terminal contact portions 4061 during extension. The plug connector 400 further includes a first metal shell 441 wrapped outside the internal circuit board, a second metal shell 442 wrapped outside the cable 416, a first insulating shell 443 injection-molded outside the first metal shell 441, a second insulating shell 444 injection-molded outside the second metal shell, and an insulating jacket 445 injection-molded on the metal shell, the first insulating shell 443, and the second insulating shell 444, thereby forming the complete cable connector 400.

Fig. 6-10 show a second embodiment of a plug connector 200. The plug connector 200 includes an insulative housing 212 having a front end with a rectangular receiving cavity 214 extending forward therethrough, two rows of terminals 218 and a metal housing 216 closely covering the outer surface of the insulative housing 212. The side walls 2121 of the insulating body 212 on both sides of the receiving cavity are provided with terminal slots 232 penetrating the inner and outer surfaces thereof, and the upper and lower rows of terminals 218 are disposed in the terminal slots 232 on both sides of the receiving cavity and include contact portions 220 extending into the receiving cavity and connection pins 221 extending out of the insulating body, wherein the upper and lower rows of terminals are arranged diagonally and symmetrically for being inserted into corresponding receptacle connectors in the front and back directions. A pair of metal elastic plates 222 for preventing electromagnetic interference are disposed inside the metal shell 216, and each elastic plate 222 is clamped between the metal shell 216 and the insulating body 212 and includes a rear fixing region 224 and an elastic arm 226. The rear fixing region 224 is a beam structure disposed transversely (i.e., in a direction perpendicular to the mating direction), and has fixing holes 225 formed at both transverse ends thereof, and fixing blocks 219 fixed in the fixing holes 225 are disposed at corresponding positions on both end edges of the insulating body. The elastic arms 226 extend inward from the front inner edge of the rear fixing region 224 toward each other, that is, the two elastic arms 226 extend laterally toward each other and are disposed substantially parallel to the rear fixing region 224, the free ends of the elastic arms are bent to form contact arms 227, the contact arms 227 are bent rearward from the front edges of the free ends of the elastic arms 226, and the contact arms 227 extend in the front-rear direction from the elastic arms and are located in front of the terminal contact portions 220. The improvement of this embodiment is that the elastic arm 226 extends along a transverse direction perpendicular to the front-back direction/mating direction, so that the insulating body 212 occupies less space, and the outer surface of the sidewall 2121 of the insulating body is provided with a shallow concave area 215 for accommodating the elastic arm 226 and the rear fixing area 224 in front of the terminal groove 232, and the corresponding contact arm 227 is provided with a through hole 2151 independent from each other, through which the contact arm 227 passes and extends into the receiving cavity 214, so as to reduce the hollowing of the insulating body, thereby ensuring that the insulating body 212 has a certain strength. A pair of insulation sheets (not shown) are provided on both outer surfaces of the side walls of the insulation body 212 for isolating the terminal contact portions 220 and the metal case 216 from each other.

Other structures of the plug connector 200 are substantially the same as those of the first embodiment, so as to be briefly described, the terminal base 234 is located behind the insulating body 212 and is provided with a plurality of pin slots 235 for the terminal pins 221 to extend backwards, the rear surface of the terminal base 234 is formed with a recess 236 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 on the internal circuit board 238. The terminal block includes a transverse partition 233 extending forward. The terminal block 234 and the insulator body 212 are fixed together by interference fit with each other. The two sides of the rear end of the transverse partition 233 are mostly inserted into the side grooves 213 of the insulating body, so as to achieve better fixing and positioning effects. A U-shaped metal latch 239 is a flat plate structure formed by directly stamping a metal plate and is assembled into the plug housing from the rear to the front, side grooves 213 are formed on both lateral sides of the mating cavity, and the latch 239 has a pair of latch arms 240 received in the side grooves 213 and located on both lateral sides of the mating cavity. During assembly, the latch members 239 are inserted into the side slots 213 and then the transverse partitions 233 of the terminal block 234 are inserted behind the latch arms.

Fig. 11 to 13 show a plug connector 500 of a third embodiment, which has a basic structure substantially the same as that of the plug connector 200 of the second embodiment, and the same portions will not be described again, and the differences will be mainly described. A first improvement is that the latch 534 of the plug connector extends two connecting pins 538 behind the latch arm 536, and the two connecting pins 538 are disposed in an up-down offset manner, so that they can be connected to the upper and lower surfaces of the internal circuit board through the pin holes 531 of the terminal block 532. A second improvement is that the tips of a pair of spring arms 527 of the metal spring plate 526 are provided with contact arms 528 extending from front to rear, and the rear fixing region of the beam structure is provided with another contact arm 529 extending from rear to front, the other contact arm 529 being located between the contact arms 528 and being spaced apart from each other. The side wall 5121 of the insulating body is correspondingly provided with two shallow concave regions 513 and three through holes 515 for the elastic arms 527 to set, the through holes 515 are used for the

contact arms

528 and 529 to pass through and enter the accommodating cavity 516, compared with the third embodiment, the contact arms 529 increase the contact area, and meanwhile, the transverse length of the elastic arms is shorter, so that the arrangement of the shallow concave regions is reduced, and the strength of the insulating body is ensured. A third improvement is that the metal shell 514 is manufactured by deep drawing technology, the side walls of the metal shell are seamless, and the abutting portion and the fixing portion of the metal shell are seamless. A fourth improvement is that the cable 540 is connected to the internal circuit board 524 through the positioning member 544.

Fig. 14-17 show a modified structure of a metal housing according to a third embodiment, which is manufactured by a drawing technique, and this technique forms a seamless structure to ensure the strength of the connector of the plug connector, especially when the plug connector has more parts and the strength of the insulating body is weak. Referring to fig. 14, the metal shell 11 includes a bag-shaped abutting portion 111 and a fixing portion 112, the abutting portion is a seamless tube shape, and the fixing portion is also a seamless tube shape. The abutting portion 111 and the fixing portion 112 are integrated, the fixing portion 112 is located at the rear end of the abutting portion 111 and has a larger size than the abutting portion, the fixing portion 112 is fixed at the outer side of the terminal block, the long side 1121 of the fixing portion 112 is provided with outward inclined retaining

pieces

1123, 16c, the retaining

pieces

1123, 16c can be fixed with the retaining holes of the metal shell, and the retaining pieces 1123 are torn from the long side 1121 and then inclined outward. Referring to fig. 15, the retaining piece 1123 extends directly rearward from the long side 1121 without any tearing, the fixing portion 112 is provided with a U-shaped notch 1126 penetrating rearward on the long side 1121 thereof, and a notch 1127 penetrating rearward is provided on the short side 1122 thereof, so that the fixing portion is easily broken when it is drawn deeply due to a large size of the fixing portion, the

notches

1126 and 1127 penetrating rearward of the fixing portion can avoid the breakage of the fixing portion as much as possible, the notch 1126 is larger in size than the notch 1127, and the notch 1127 is in a slit shape. Referring to fig. 16, the fastening piece 1124 extends directly rearward from the long side without any tear, and the long side is provided with a plurality of notches 1128 penetrating rearward, and the notches 1128 are slit-shaped. Referring to fig. 17, the fixing portion is larger in size and not easy to be drawn, so the improvement point is that the fixing portion 113 is a pair of long sides 1131 and a pair of short sides 1132 which are formed by bending, the long sides and the short sides are independent from each other, and the long sides are provided with retaining pieces 1133.

Fig. 18-19 show a modified structure of the terminals of the plug connector, particularly a modified structure of the power terminals. The contact portions of the upper and lower rows of terminals (including the signal terminals and the ground terminals or the power terminals) of the above embodiments have V-shaped front ends, thereby forming contact points at the V-shaped apexes, which scrape contact receptacle terminals, fig. 18 shows a process in which the elastic power terminals 600 of the plug connector are brought into contact with the receptacle power terminals 700 of the mating tongue plate of the receptacle connector, and fig. 18 shows that the plug power terminals 600 are provided with inclined contact points 602 at the V-shaped apexes, the black areas in the figure show the vulnerable areas where the contact points 602 are most vulnerable to damage due to wiping contact during plugging, the location designated by letter a (i.e., when the terminal is first contacted) is when the contact point 602 is most stressed, i.e., most susceptible to damage, when the position indicated by the letter B is such that the same plug power terminal 600 finishes contacting the socket power terminal, the contact point 602 contacts the socket terminal. Note that in the receptacle connector, the signal terminals 702 are shorter than the power supply terminals 700, i.e., the front-most vulnerable points are located behind the power supply terminals. It is clear that the contact point 602 presents an arc-shaped vulnerable area, so that the connection is not effective enough. Fig. 19 shows an improvement of the contact portion, in which the plug power terminal 610 has a cantilever-like contact portion, and the front end of the contact portion forms a bowl-shaped structure, that is, the contact portion has a vulnerable point 612 and a contact point 614, the contact point 614 is located behind the vulnerable point 612, the vulnerable point 612 contacts the socket power terminal 700 first at the earliest contact, and the contact point 614 contacts the socket power terminal 700 at the full contact, so that the contact point and the vulnerable point are separated from each other forward and backward by about 0.75 mm. In the free state, the contact point and the vulnerable point are located on substantially the same horizontal plane, and the line connecting the contact point and the vulnerable point is inclined forward and backward after the contact is completed. In this embodiment, if the signal terminal is a V-shaped structure, the contact point is about 0.5 mm away from the contact point of the bowl-shaped structure.

Fig. 20-24 disclose a fourth embodiment of a plug connector 300. the plug connector 300 includes a dielectric body 302, two rows of terminals 306, a metal housing 314, and a pair of independent latches 318. The housing 302 has a cavity 304, and two rows of terminals are assembled in the housing 302 and arranged on two sides of the cavity 304, which includes a contact portion 305 extending forward into the cavity 302 and a connecting portion 307 extending backward out of the housing. The main improvement point of this embodiment is that the locking member 318 is a pair of independent locking members, rather than a U-shaped one-piece locking member; each latch member 318 includes a resilient latch arm 323 extending forward and a connecting leg 326 extending out of the housing, and the front end of the latch arm 323 has a latch head 324 protruding into the two lateral ends of the receiving cavity. The insulating body 302 is provided with side grooves 320 at two transverse ends of the accommodating cavity, the side grooves 320 extend forwards and backwards, and the locking part is accommodated in the side grooves 320. A fixing portion 322 is disposed between the latch arm 323 and the connecting leg 326 of each latch member, and the upper and lower edges of the fixing portion have barbs for interference fixation in the insulating body, and the latch member is interference-fixed in the side groove 320 through the barbs. The side slots 320 extend rearwardly through the housing so that the latching members 318 are assembled into the side slots from the rear to the front, and the side slots extend laterally through the inner and outer end surfaces of the housing so that the outer side surfaces 325 of the latch arms contact the metal shell 314 as shown in fig. 24. The connecting leg at the rear end of each locking member 318 is formed in a fork-like structure, and is clamped to the front edge of the internal circuit board 308 and further fixed by soldering. 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 pins 307 of the terminals are soldered to the front of the inner circuit board 308, the front of which is arranged at the rear of the insulating body, and a cable 310 comprising a plurality of core wires 312, which are soldered to the rear of the inner circuit board 308. It will be appreciated that such catch member 318 is formed by bending a metal plate, and that the catch head 324 has an abutment direction perpendicular to the plane of the metal plate, which catch member configuration may allow for relatively large tolerances in the manufacturing process. The rear edge of the metal shell 314 is provided with a pair of opposing rear edge tabs 329, each rear edge tab 329 having a retaining tab 330 for securing with a retaining hole 331 of a metal shell covering the inner circuit board housing.

The above-described embodiments are illustrative, but not restrictive, of the present invention, and any equivalent variations that may be made in the details of the present invention by a person of ordinary skill in the art upon reading the present specification are intended to be encompassed by the present claims.

Claims

1. A plug connector comprises an insulating body, two rows of terminals, a metal shell and a pair of locking pieces; the insulation body is provided with a containing cavity penetrating forwards, the two rows of terminals are respectively arranged on the upper side and the lower side of the containing cavity and comprise a contact part extending forwards into the containing cavity and a connecting pin extending backwards out of the insulation body; the metal shell is coated on the outer surface of the insulating body; the method is characterized in that: the locking parts are respectively positioned at the left side and the right side of the accommodating cavity, and each locking part is formed by bending a metal plate and is vertically fixed on the insulating body; each locking piece comprises an elastic locking arm extending forwards, a connecting pin extending out of the insulating body and a fixing part positioned between the locking arm and the connecting pin, the front end of the locking arm is provided with a locking head protruding into the two transverse ends of the accommodating cavity, and the locking head is provided with an abutting direction vertical to the plane of the metal plate; the insulating body is provided with side grooves positioned at the two transverse ends of the accommodating cavity, and the side grooves extend forwards and backwards; the side groove penetrates through the inner end face and the outer end face of the insulating body in the transverse direction, the latch arm is accommodated in the side groove, and the latch arm is bent towards the transverse outer side in an arc shape and penetrates through the outer end face of the side groove, so that the outer side face of the latch arm is in contact with the metal shell.

2. The plug connector of claim 1, wherein: barbs which are fixed on the insulating body in an interference manner are arranged at the upper edge and the lower edge of the fixing part; the lock catch piece is assembled into the side groove from back to front and is fixed in the side groove through the barb interference.

3. The plug connector of claim 1, wherein: the connecting pin is of a fork-shaped structure.

4. The plug connector of claim 3, wherein: the connecting pins are used for clamping the front edge of an internal circuit board and are further fixed by welding.

5. The plug connector of claim 1, wherein: the metal shell is coated on the outer surface of the insulating body, and the pair of metal elastic plates are arranged on the insulating body and clamped between the insulating body and the metal shell.

6. The plug connector of claim 1, wherein: the rear edge of the metal shell is provided with a pair of opposed rear edge pieces, each having a retaining piece.