CN114122832A - Plug connector - Google Patents

Abstract

A plug connector comprises a terminal module and a cable, wherein the terminal module comprises a pair of subunits, each subunit comprises a row of terminals arranged along the longitudinal direction and an insulator for fixing the terminals, the terminals comprise differential pair terminals and grounding terminals, each terminal comprises a contact part extending forwards and a tail part extending backwards, the tail parts of the grounding terminals are integrally connected with a cross bar, and the cable comprises a conductive core welded on the tail parts of the differential pair terminals and a shielding layer mechanically and electrically connected with the cross bar. The plug connector further includes a pair of grounding members, each grounding member is fixed to a corresponding subunit, the grounding members include a plurality of front spacers and a plurality of rear spacers, the rear spacers are connected to the shielding layer of the corresponding cable, and the front spacers are connected to the tails of the corresponding grounding terminals. The grounding member of the present invention has a plurality of grounding points, so as to effectively improve the electrical performance.

Description

Plug connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to a plug connector.

[ background of the invention ]

The plug connector is typically connected to a cable and the receptacle connector is typically soldered to a circuit board. At present, the plug connection generally uses a daughter card, namely, different edges of one circuit board are provided with golden fingers, the golden fingers are connected through a circuit, the golden finger at one end is inserted into the socket connector, and the golden finger at the other end is used for being connected with a cable. However, the plug connectors using daughter cards may be relatively large in size. Nowadays, more and more systems using cables instead of circuit boards are used for signal transmission in high-speed systems, but inevitably the requirements for high-frequency performance are increased.

Therefore, there is a need to provide an improved electrical connector assembly to solve the above problems.

[ summary of the invention ]

The technical scheme to be solved by the invention is as follows: provided is a plug connector which improves electrical performance.

In order to achieve the purpose, the invention adopts the following technical scheme: a plug connector comprises a terminal module and a cable, wherein the terminal module comprises a pair of subunits, each subunit comprises a row of terminals arranged along the longitudinal direction and an insulator for fixing the terminals, the terminals comprise differential pair terminals and grounding terminals, each terminal comprises a contact part extending forwards and a tail part extending backwards, the tail parts of the grounding terminals are integrally connected with a cross bar, and the cable comprises a conductive core welded on the tail parts of the differential pair terminals and a shielding layer mechanically and electrically connected with the cross bar; the plug connector further comprises a pair of grounding pieces, each grounding piece is fixed on the corresponding subunit, each grounding piece comprises a plurality of front spacers and a plurality of rear spacers, each rear spacer is connected with the shielding layer of the corresponding cable, and each front spacer is connected with the tail of the corresponding grounding terminal.

Compared with the prior art, the grounding piece of the invention has a plurality of grounding points, and can effectively improve the electrical performance.

[ description of the drawings ]

Fig. 1 is a perspective view of an electrical connector assembly according to a first embodiment of the present invention, in which a receptacle connector and a plug connector are separated from each other.

Fig. 2 is a schematic cross-sectional view of the two connectors of fig. 1 after mating.

Fig. 3 is an exploded perspective view of the plug connector of fig. 1.

Fig. 4 is an exploded perspective view from another angle of fig. 3.

Fig. 5 is a perspective view of the terminal module and the grounding member of fig. 4 further disassembled.

Fig. 6 is a further exploded perspective view of fig. 5.

Fig. 7 is a perspective view of the terminal module of fig. 5.

Fig. 8 is a partially enlarged view of fig. 7.

Fig. 9 is a perspective view of the terminal module of fig. 5 further disassembled.

Fig. 10 is a perspective view of the terminal and the cross bar of fig. 9.

Fig. 11 is a top view of fig. 7.

Fig. 12 is an exploded perspective view of the receptacle connector of fig. 1.

Fig. 13 is an exploded perspective view of the terminal module and the grounding plate of fig. 12.

Fig. 14 is an exploded perspective view of a plug connector according to a second embodiment of the present invention.

Fig. 15 is a perspective view of a plug connector according to a third embodiment of the present invention, in which the plug connector and the plug connector are separated from each other.

Fig. 16 is a cross-sectional view of the two connectors of fig. 15 after mating.

Fig. 17 is an exploded perspective view of the receptacle connector of fig. 15.

Fig. 18 is an exploded perspective view of fig. 17, further disassembled.

Fig. 19 is a perspective view of the terminal module of fig. 18 further disassembled.

Fig. 20 is an exploded perspective view of the plug connector of fig. 15.

Fig. 21 is an exploded perspective view of a fastening device according to a fourth embodiment of the present invention.

Fig. 22 is an exploded perspective view of a fixing device according to a fifth embodiment of the present invention.

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

[ detailed description ] embodiments

For a better understanding of the objects, structure, features, and functions of the invention, reference should be made to the drawings and detailed description that follow.

Referring to fig. 1 to 13, a first embodiment of the present invention discloses an electrical connector assembly 10, the electrical connector assembly 10 includes a receptacle connector 100 and a plug connector 200, which are mated with each other, the receptacle connector is mounted on a circuit board (not shown) and therefore may be referred to as a board connector, a cable 250 is connected to a rear end of the plug connector 200 and may also be referred to as a cable connector, and the cable connector is inserted into the receptacle connector 100 along a mating direction to complete electrical connection.

Referring to fig. 3 to 11, the plug connector 200 includes a terminal module 210 and a pair of housings 280 and 282, the housings form a receiving space 283, the terminal module 20 is received in the receiving space 283, and a pair of latching slits 285 provided in the housing 280 receives a latching piece 286 provided in the other housing 282. The housing 280 is provided with an opening 281 allowing the cable 250 to extend therethrough. Latching member 290 includes a pair of fixing portions 292, an operating portion 294 extending from fixing portions 292, and a latching arm 292, with latching arm 295 located between the pair of fixing portions 292. The inner plate 2921 of the fixing portion 292 is fixed in a fixing slit 2821 provided outside the housing 282. The latch arms 292 are outwardly elastically deformable and have a pair of latch protrusions 296 formed at ends thereof, and the latch protrusions 296 protrude toward the terminal module 210. The terminal module 210 is connected to a row of cables 250, each of which includes a conductive core 252 and a shielding layer 254. The terminal module 210 includes a pair of sub-units 220 stacked on each other, and a shielding plate 230 is interposed between the two sub-units 220.

Each subunit 220 includes a set of terminals 222 and an insulator 224 secured to the terminals by injection molding. The terminals 222 are arranged in a row and include a plurality of ground terminals 227 and differential pair terminals 229, each adjacent two differential pair terminals form a differential pair, and the ground terminals and the differential pair terminals are alternately arranged. The differential pair terminals 229 have solder tail portions 228 connected to the conductive core 252, and all of the ground terminals 227 are integrally connected to a cross bar 238, forming a unitary structure, i.e., the tail portions 228' of the ground terminals are integrally connected to the cross bar 238. The bar 238 is aligned with and abuts the shielding layer 252, and a gap 226 is provided behind the bar for receiving or placing the cable 250.

The contact portions 2221 of the terminals 222 are exposed in the slits 237 formed in the insulator 224 so as to be capable of being mated with the terminals 134 of the receptacle connector 100. where it is desired to avoid confusion, the terminals 222 of the plug connector may be named as plug terminals 222 and the terminals 134 of the receptacle connector may be named as receptacle terminals 134. The plurality of spaced ribs 239 of the insulator 224 define channels (not numbered) therebetween for receiving the tail portions 228 and the conductive core 252 of the cable, and the tail portions and the conductive core are welded to each other in the channels. A pair of locking fingers 223 are located on opposite sides of the tongue 2241 and spaced from the tongue 2241, the locking fingers extending forwardly from the insulator, and the rear end of the insulator forming a support 2242 for receiving a crossbar, a cable front end, etc. The rear end of the insulator is provided with a notch 225 for receiving a cable 230. The insulator 224 has a post 231 and a hole 233 for mating with another insulator hole 233 and post 231.

A pair of grounding members 240 are fixed to the corresponding insulators 224, respectively, and a hole 244 formed in each grounding member 240 is matched and fixed to a column 231 formed in the insulator. Each of the ground members 240 is further formed with a plurality of rear spacers 242, and the rear spacers 242 may be formed by press bending while leaving a residual hole 241, and solder may be passed through the residual hole 241 to solder the rear spacers 242, the shielding layer 254, and the cross bars 238 to each other during soldering. Structurally, the shield 254 is sandwiched between the ground 240 and the bar 238.

The differential pair terminals 229 are initially integrally connected to the cross bar 238 and the tail portions 228 are cut from the cross bar after injection molding. The ground member 240 is further provided with front spacers 247 mechanically and electrically connected to the tail portions 228' of the ground terminals, the front and rear spacers being aligned with each other in the front-to-rear direction. The spacer ribs 239 in the insulator between the differential pair terminals 227 and the ground terminals 229 are removed to substantially expose the tail portions 228' of the ground terminals. In this embodiment, the spacing ribs on the tail portions 228 ' of the ground terminals are removed so that the tail portions 238 ' are exposed, and the front spacers 247 added to the ground member 240 not only separate the tail portions 228 of the signal terminals but also mechanically and electrically connect the tail portions 228 ' of the ground terminals 227, thereby improving the electrical grounding performance. In any event, however, the spacing ribs 239 of the insulator 224 space the differential terminal pairs apart to ensure soldering.

Referring to fig. 12-13, the receptacle connector 100 includes a body 110 made of an insulating material, a terminal module 130 disposed in the body, and a metal housing 120 covering the body, wherein the terminal module 130 includes a pair of sub-units 131, and the two sub-units are stacked laterally on each other. Each subunit 131 includes a terminal 134 and an insulator 132 formed by injection molding, and a post 136 and a hole 138 of the insulator 132 are matched with and fixed to a hole and a post of the insulator of another subunit. A pair of ground pads 140 collectively encases the two subunits 131. Each grounding plate 140 is provided with a plurality of resilient fingers 142, the resilient fingers 142 passing through the slots provided in the insulator to abut against the ground terminals in the terminals 134. The housing 110 defines a mating cavity 114 extending in a longitudinal direction for receiving a mating tongue 2241 of the terminal module 210 of the plug connector 200. A plurality of channels 115 are formed in the body 110 for receiving the terminals 134 one by one.

The two end walls 112 of the body 110 are provided with a pair of latching grooves 119 for receiving latching fingers 223 of the sub-unit 220 of the plug connector, and mating ribs 118 are formed on the end walls 112 to be mated and fixed with the mating openings 124 provided on the metal shell 120. The metal shell 120 is formed with a locking space 122 for receiving a locking member 290 of the plug connector, and the locking space 122 is provided at one side thereof with a pair of locking holes 126 for being engaged with locking protrusions 296 of the locking member 290. The metal shell 120 is provided with a notch 127 for passing the latch arm 295 of the corresponding latch member therethrough, and the latch hole 126 is located below the notch 127. The fixing portion 292 includes an inner plate 2921 and an outer plate 2922, the inner plate 2921 is fixed in the fixing slot 2821, the outer plate 2922 is accommodated in the locking space 122, the locking arm 295 passes through the notch 127 and reaches the outer side of the metal housing 120, and the locking protrusion 292 enters the locking hole 126.

Fig. 14 shows a second embodiment which is largely identical to the first embodiment, like elements being given like reference numerals and not described in detail. In fig. 14, a cross rib 2811 is connected above the opening 281, and in fig. 3, there is no cross bar, and the opening 281 penetrates upward.

Fig. 15-20 show an electrical connector assembly 20 of a third embodiment, in which a receptacle connector 300 is horizontally mounted on a circuit board, a plug 400 is mated with the receptacle connector 400 along a horizontal direction, the extending direction of a cable and the mating direction of the connectors are parallel to each other, the basic structure of the plug connector and the receptacle connector is the same as that of the first embodiment, and the basic structure is mainly adapted to the difference of the extending directions.

The body 310 has a forward-extending docking cavity 314 with lengthwise extending slots 312 on both sides. The two end arms of the body are provided with latch slots 319 which are engaged with the latch fingers of the plug connector.

The metal shell 320 covers the body 310, and the metal shell 320 includes a locking space 322 for receiving a locking element 420 of the plug connector, wherein a locking protrusion 422 of the locking element is locked in a locking hole 326 formed at one side of the locking space 322. The metal shell has an opening 324 that is secured to a projection 318 on the end wall of the body.

The rear end of the body is provided with a containing cavity 316 which is communicated with the butt joint cavity 314, and the rear of the body is provided with two channels 311, 313 and a hole 317 which are mutually fixed with bumps 356, 359, 346 arranged on the terminal module. The terminal module 330 includes two sub-units 340, 350 and a grounding unit 360 sandwiched between the two sub-units, the upper sub-unit 340 includes a plurality of terminals 344 and insulators 342 integrally formed on the terminals, and the bumps 346, 349 are formed on the insulators 342. The lower sub-unit 350 includes a plurality of terminals 354 and an insulator 352 integrally formed on the terminals, and a bump 356 is formed on the insulator 352. The rear end of the insulator 352 is provided with a recessed area 358. The grounding unit 360 includes a shielding plate 366 made of metal and an insulator 362 injection-molded to the ground plate. The three units are assembled from top to bottom with the rear ends of the ground units received in the recessed area 358.

The plug connector 400 includes a pair of housings 410, 412 and a terminal module 430 positioned within the housings. The terminal module 430 includes a pair of sub-units 440 and a shielding plate 480 sandwiched between the sub-units, and the structure of the sub-units is substantially the same as that of the first embodiment and will not be described in detail. The ground member 470 is fixed to the subunit and includes spacers 470 that space the cables apart while the spacers are soldered to the cross bars to which the ground terminals are integrally connected. The grounding member is fixed to the cylinder provided with the insulator of the sub-unit through the openings 474 at both ends thereof. The rear cable 490 includes a centrally located conductive core 492 and a shielding layer 494 surrounding the conductive core.

Fig. 21 shows a fourth embodiment, which is an improved solution of the present patent publication No. CN112864713A, wherein a fixing device for fixing an electronic card or a daughter board includes a main body 41 and a locking structure 42, the main body is mounted on a circuit board or a motherboard, the locking structure 42 is mounted on the main body and moves along a linear direction between a locking state and a non-locking state, the main body includes a supporting platform 43 that supports a lower surface of the daughter board upward, a limiting portion 431 receives a notch at a rear edge of the daughter board, a supporting surface 411 cooperates with a tower portion 414 to form a sliding slot 415, a pair of arms 422 of the locking structure move along the sliding slot 415, and a protrusion 423 at a front end of the arms is received in the recess 416 in the locking state. The base portion 41 is further provided with a grounding plate 5 which is electrically connected to a grounding pad of the circuit board and a grounding pad of the daughter board to form a grounding path. An additional elastic element 6 is located between the base 41 and the locking structure 42, the elastic element 6 extends in a plane, and is located on the abutting surface 411, one edge B1 of the elastic element abuts on one surface S1 of the tower 414, and the other edge B2 abuts against one surface S2 of the locking structure, so that the locking structure 42 can be always urged to move towards the daughter board, and the daughter board is ensured to be stably fixed. At the same time, body 41 is simultaneously urged to move in a direction to secure its structure, helping to ensure that body 41 is secured to the circuit board.

Fig. 22 shows another fixing device, the body 80 is fixed in the through hole of the main board 900 by the fish fork leg 82, and the body cannot move in the horizontal direction. The locking structure 90 is mounted on the body 80, and the fixing portion 92 thereof is movably inserted into the sliding slot 84, so as to form a space for accommodating the daughter board 950 between the locking structure 90 and the main board 900, the body 80 is provided with a space 86 for accommodating the spring 99, and the spring 99 urges the locking structure 90 to move toward the daughter board, so as to fix the daughter board. The locking structure has an inclined guide surface 97 facing the daughter board, which facilitates the downward and smooth assembly of the daughter board into the fixing device during the docking process. The spring 99 may be replaced by other elastic members, and the fixing portion 92 preferably has a hook for fixing with the slide groove to prevent the fixing portion from being separated from the slide groove 84.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the scope of the present invention. All such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.

Claims (10)

1. A plug connector comprises a terminal module and a cable, wherein the terminal module comprises a pair of subunits, each subunit comprises a row of terminals arranged along the longitudinal direction and an insulator for fixing the terminals, the terminals comprise differential pair terminals and grounding terminals, each terminal comprises a contact part extending forwards and a tail part extending backwards, the tail parts of the grounding terminals are integrally connected with a cross bar, and the cable comprises a conductive core welded on the tail parts of the differential pair terminals and a shielding layer mechanically and electrically connected with the cross bar; the method is characterized in that: the plug connector further comprises a pair of grounding pieces, each grounding piece is fixed on the corresponding subunit, each grounding piece comprises a plurality of front spacers and a plurality of rear spacers, each rear spacer is connected with the shielding layer of the corresponding cable, and each front spacer is connected with the tail of the corresponding grounding terminal.

2. The plug connector of claim 1, wherein: the front spacer and the rear spacer are both vertical to the longitudinal direction.

3. The plug connector of claim 1, wherein: the front spacer and the rear spacer are formed by punching and bending the grounding piece, and a residual hole is formed.

4. The plug connector of claim 1, wherein: the rear spacer spaces the shielding layers of adjacent cables from each other and the front spacer spaces the conductive core of the adjacent cables.

5. The plug connector of claim 1, wherein: the insulator of each subunit is provided with spacing ribs which space the tail parts of two adjacent differential pair terminals, and no spacing rib is arranged between the tail parts of the movable terminal and the differential pair terminal.

6. The plug connector of claim 1, wherein: the shielding layer is clamped between the cross bar and the corresponding grounding piece.

7. The plug connector of claim 1, wherein: the plug connector includes a housing surrounding the terminal module and a shielding plate sandwiched between the two sub-units.

8. The plug connector of claim 1, wherein: the front spacers and the corresponding rear spacers are aligned with each other in the front-rear direction.

9. The plug connector of claim 1, wherein: the tail portions of the differential pair terminals are integrally connected to the cross bar, and the tail portions of the differential pair terminals are cut off from the cross bar after the insulator is injection molded on the terminals.

10. The plug connector of claim 1, wherein: the terminal module is provided with a butt tongue plate and locking fingers positioned on two sides of the butt tongue plate along the longitudinal direction, the contact parts of the terminals are arranged on the butt tongue plate, and the locking fingers and the butt tongue plate are spaced from each other.

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