CN1104065C - High speed modular electrical connector and receptacle for use therein - Google Patents

Abstract

A socket (10) of an electrical connector includes a housing having a first side (12) and a second side (16) and a plurality of conductive signal leads (18), each of which extends from the first side to the second side. The housing has a plurality of longitudinal sides (24) located between the first and second sides. A conductive shielding layer (32) is superimposed on at least some of the longitudinal sides, and a conductive internal shielding device is inserted between at least some of the conductive signal devices.

Description

High-speed standard electrical connectors and sockets used

Background of the Invention Field of the Invention

This invention relates to electrical connectors, and more particularly to modular connectors for connecting daughter printed wiring boards to female printed wiring boards.

Brief overview of previous progress

In the manufacture of computers and various other electronic components, a connector is usually used to connect the daughter board to the motherboard, the connector has a socket, the socket has a plastic body and first and second sides, wherein the leads One side is connected to the daughterboard, and the other side is connected to a header that connects to the motherboard. Various layouts have been proposed for grounding the connector to the motherboard or daughterboard, but these layouts complicate the connector structure. Therefore, there is a need for a simple and cost-effective way to ground the connector between the motherboard and the daughterboard. There is also a need for such connectors to reduce crosstalk and increase bandwidth.

Summary of Invention

The socket of the present invention includes a housing having first and second sides and a plurality of electrically conductive signal lead means. Each of these leads extends from the above-mentioned first face to the above-mentioned second face. The housing has a plurality of longitudinal sides located between said first and second sides, and electrically conductive shielding means superimposes at least some of said longitudinal sides. Internally conductive shielding means are interposed between at least some of the conductive signaling means described above.

In the electrical connector of the present invention, the above-mentioned receptacle is connected to the sub-board through a shielded plug. The plug has two end walls and an intermediate wall and is made of electrically conductive material, preferably a suitable metal alloy. A number of apertures extend through the intermediate wall and hold signal pins that make contact with the leads in the receptacle. There are first and second faces on the intermediate wall. The first face abuts with the second face of the receptacle. The second side rests against the printed circuit board. On the second side there are a number of notches into which a conductive receptacle is press-fitted to ground the connector.

Brief description of attached drawings

The invention will be further described with reference to the accompanying drawings, in which:

Figure 1 is a perspective view of a partial cutaway of the socket of the present invention;

Fig. 2 is the outer shielding layer for the socket of Fig. 1;

Fig. 3 is the inner shielding layer for the socket of Fig. 1;

Fig. 4 is the insulating casing for Fig. 1 socket;

Fig. 5 is the perspective view that is used for the lead wire of Fig. 1 socket and insulating frame plate combination;

Fig. 6 is the coordination of the outer shielding layer and an inner shielding layer;

Fig. 7 is a side view of the socket of Fig. 1, in order to show the lead wire layout, part is cut away;

Fig. 8 is the front view of Fig. 1 socket;

Fig. 9 is a sectional view through 9-9 in Fig. 8;

Fig. 10 is a sectional view through 10-10 in Fig. 8;

Fig. 11 is a vertical sectional view through an insulating frame plate in Fig. 5;

Fig. 12 is a vertical sectional view of the mating socket and plug of Fig. 1;

Figure 13 is a front perspective view of a second preferred embodiment of the socket of the present invention;

Figure 14 is a rear perspective view of the socket of Figure 13;

Fig. 15 is the rear view of Fig. 13 socket;

Figure 16 is a schematic top view, partly cut away, showing a socket mated to a printed circuit board;

Figure 17A is a cross-sectional view through 17-17 in Figure 15;

Figure 17B is a cross-sectional view similar to Figure 17A, wherein the receptacle is shown mating with a plug;

Figure 18 is a side view of the shield for the socket of Figure 13;

Figure 19 is a side view of the contacts for the socket of Figure 13;

Figure 20 is a partially cut away perspective view of a third preferred embodiment of the present invention;

Figure 21 is a side view of the socket of Figure 20;

Figure 22 is a front view of the socket of Figure 20;

Fig. 23 is a plane bottom view of the socket of Fig. 20;

Figure 24 is a rear view of the socket of Figure 20;

Figure 25 is a side view of an inner shield in the socket of Figure 20;

Figure 26 is a rear view of the inner shielding layer of Figure 25;

Fig. 27 is a top plan view of the shielding layer in Fig. 25;

Figure 28 is a side view of the insulating frame plate and conductive contact combination for the socket of Figure 20;

Figure 29 is an end view of the insulating frame plate and contacts of Figure 28;

Fig. 30 is the plane rear view of the fourth preferred embodiment of socket of the present invention;

Figure 31 is a plane bottom view of the socket in Figure 30;

Figure 32 is a sectional view through 32-32 in Figure 30;

Figure 33 is a bottom perspective view of the socket of Figure 30;

Figure 34 is a top perspective view of the socket of Figure 30;

Figure 35 is a planar rear view of the socket of Figure 30 with the top shield removed;

Figure 36 is a side view of a plug suitable for connection to the socket of Figure 30;

Figure 37 is a top view of the plug of Figure 36;

Figure 38 is a plan front view of the plug of Figure 36;

Figure 39 is a side view of the insulating frame plate and conductive contact combination for the socket of Figure 30;

Figure 40 is an end view of the insulating frame plate and conductive contact combination shown in Figure 39; and

Fig. 41 is a top view of the combination of the insulating frame plate and the conductive contacts shown in Fig. 40 .

Detailed Description of Preferred Embodiments

Referring now to Figures 1-2, a receptacle is indicated generally at 10 . The socket has a first face 12 on a front insulating housing generally indicated at 14 . The socket also has a second side 16 on its bottom side, from which conductive signal leads 18 extend. The first side has a number of openings 20 where the pins of the plug engage the signal leads, as described below. The socket also includes a ground pin 22, as is conventional. The receptacle also includes side longitudinal sides 24 and 26 and a top longitudinal side 28 . There is an end face 30 opposite the first face. The longitudinal sides 24 and 26 as well as the end face 30 are covered by a U-shaped shield. The shielding layer comprises longitudinal regions 34 and 36 which superimpose on the longitudinal sides 24 and 26 respectively. Region 38 of U-shaped shielding layer 32 superimposes on end face 30 of socket 10 . There is also a top shield (not shown) on the upper longitudinal side 28 of the insulating housing.

Referring to Figures 1, 3 and 6, there are parallel longitudinal inner shields 40, 42, 44, 46 and 48. Between these inner shields there is a longitudinal space 50 (Fig. 3). Each inner shield also has lateral regions 52 and 53 (FIG. 3). Each lateral section has a pair of vertical lock tabs 54 and 56 in the lateral section 52 and 58 and 60 in the lateral section 53 . These vertical tabs cooperate with horizontal eyelets 62 and 64 (Figs. 2 and 6). On the front top edge of the longitudinal section 34 of the U-shaped shield 32 there is a resilient locking tab 66 . There is also an elastic locking piece 68 at the front top edge of the longitudinal section 36 of the U-shaped shielding layer 32 . Similarly, inner shield 40 has a front spring lock 70, inner shield 42 has a front spring lock 72, inner shield 44 has a front spring lock 74, and inner shield 46 has a front spring lock 76. , and the inner shielding layer 48 has a front elastic locking piece 78.

With particular reference to Figure 4, there are lateral slots 80 and 82 in the insulating housing. These slots fit into resilient tabs 70 and 68 respectively. Between these slots are intermediate slots 84, 86, 88, 90 and 92 which engage resilient tabs 70, 72, 74, 76 and 78 respectively on the inner shield.

Referring particularly to FIGS. 1 and 4-5, it can be seen that the leads are encapsulated within insulating frame plates 94, 96, 98, 100, 101 and 102. As shown in FIG. These frame plates have frame plate locking tabs 103 , 104 , 106 , 108 , 110 and 112 respectively. These frame locking tabs respectively cooperate with openings 114, 116, 118, 120 and 122 in the insulating housing (FIG. 1).

Referring particularly to FIGS. 5 and 7-8 , it can be seen that, in addition to lead 18 , insulating frame plate 94 holds signal leads 124 , 126 , 128 and 130 . Each lead extends upwards first and then horizontally. Each lead has a split pin mating area 132, 134, 136, 138 and 140, respectively, at its horizontal terminal. The socket also has a pair of combination keying handles 142 and 144, and press pins 146, 148 and 150, as is conventional.

Referring to FIG. 11 , it shows an insulating frame plate that is divided vertically into equal parts. The bisected frame plate is concave in the center and has a number of contact receiving structures 151a-151h.

Referring to FIG. 12 , the receptacle mates with a plug generally indicated at 152 . The plug has a pair of end walls 154 and 156 and an intermediate wall. There are a plurality of openings in the intermediate wall through which the conductive pins 160 extend to mate with the first face of the receptacle and are received in the split pin mating areas of the leads.

The second embodiment is shown in Figures 13-20. With particular reference to FIG. 13 , the front of the socket is indicated generally at 210 and the rear thereof at 211 . On the front there are conventional pin-accommodating openings 212 for connection to a plug. The socket also includes a press-fit plunger 214 and positioning plungers 216 and 218, as is conventional. Also included are spacers 220 and 222 and alignment keys 224 and 226 .

14-15, the top surface 228, rear surface 230, and sides 232 and 234 are shown in greater detail. From this figure it can be seen that there are slots 236 and 237 in the top, bottom and rear to accommodate the shielding, parallel to the sides. There are elongated contact receiving slots 238 and 239 in the middle of the shield. There are also pairs of slots 240 and 242 at vertically spaced locations along the shield receiving slots.

16-20 in particular, signal contacts 244, 246, 248, 250 and 252 pass through each contact receiving slot in the receptacle. These contacts are connected at one end to the printed wiring board 254 (FIG. 16). (It should be understood that the contacts between each set of shields all extend rearwards with the same overall length, although in Figure 16 the mating of the printed wiring board schematically shows a different rearward position, this is only for Illustrates the various positions on the board where the contacts can mate). At the other end they have a V-shaped formation 256 for fitting the pins in the pin receiving openings. With particular reference to Figures 17A-17B and 19, the shield has ground pins 258, 260 and 262 which are grounded to the printed wiring board through the bottom surface of the socket. The shield also has a resilient lower grounding structure 264 that extends down through the lower slot in the receptacle and back to ground to the shielded plug 265 (FIG. 17B). Similarly, the shield has a resilient upper ground structure 266 which is grounded to the plug (not shown) through a slot in the top of the receptacle. A plug suitable for mating with these resilient ground projections may be the one shown in International Patent Application No. WO 96/31922 (published October 10, 1996 and assigned to the assignee of the present application).

A third embodiment is shown in Figures 20-29. The front of the socket is indicated generally at 410 and the bottom surface at 411 . There are conventional pin receiving openings 412 on the front for connection to a plug. As is conventional, the socket also includes a press-fit plunger 414 and positioning plungers 416 and 418 .

Top surface 428, rear surface 430, and sides 432 and 434 are shown in greater detail. As described above in relation to the application, there are slots to accommodate the shield in the top, bottom and rear surfaces, parallel to the sides. There are elongated contact receiving slots between the shields. There are also pairs of slots at vertical intervals along the shield receiving slots.

With particular reference to Figures 25-27, the shield has ground pins 458 which are grounded to the printed circuit board through the bottom surface of the socket. The shield also has a resilient lower grounding structure 458 that extends down through the lower slot in the receptacle and then back to ground to the shield's plug. The shield has a rearwardly facing region 461 extending vertically from the main region 463 . The rearward area 461 has another elastic lower ground contact structure 465 . Similarly, the shield has a resilient upper ground structure 466 which is grounded to the plug (not shown) through a slot in the top of the receptacle. A plug suitable for mating with these resilient ground projections may be, for example, the one shown in International Patent Application No. WO96/31922 (published October 10, 1996, assigned to the same attorney as this application).

With particular reference to FIGS. 29-30 there is shown a frame in which contacts 467 are held by insulators 469 . The contacts are integral with insulator 469 and at one end they have a lead 471 and at the other end they have V-shaped formations 456 for mating with the pins of the pin receiving openings. The insulator 469 also includes mounting grooves 473 that serve as ground connections between the contacts and the outer shield.

Referring to Figures 30-35, a fourth preferred embodiment of the receptacle is shown generally at 810. The socket has a first face 812 in front of the housing 814 and a second face 816 on its bottom face. A plurality of conductive electrical signal leads 818 extend from the first side 812 to the second side 818 . The first side 812 has a plurality of rows of openings 820a, 820b, 820c, 820d and 820e. In these openings, the pins of the plug mate with the signal leads, as described below. The receptacle also includes side longitudinal sides 824 and 826 , and a top longitudinal side 828 . The receptacle also includes end portion 830 and an angled outer shield 832 overlying end portion 830 and top longitudinal side 828 . The longitudinal sides 824 are made of metal walls 834 . Referring particularly to Figure 37, it can be seen that there are a number of inner shield layers 838, 840, 842, 844, 846 and 848. Adjacent to each inner shield there is a longitudinal space 850a, 850b, 850c, 85Od, and 85Oe. Each conductive shield has an upper contact latch 852a, 852b, 852c, 852d, 852e, and 852f. Similarly, the conductive shields also have lower contact latches 854a, 854b, 854c, 854d, 854e, and 854f (FIG. 36). In the outer shield 832, there are also top slots 858a-858f for engaging resilient locking tabs 852a-852f. There are also edge slots 858a-858c for urging the outer shield 832 to bend into its corner position. The shield also includes bottom slots 860a-860f for engaging resilient lower contact latches.

Referring to Figure 35, insulating frame plates 894, 896, 898, 900, 902 and 904 are interposed between conductive shielding layers. These frame plates are used to hold the contacts in a similar manner to the above described embodiments. For example, in addition to lead 818 , insulating frame plate 894 holds signal leads 924 , 926 , 928 and 930 . Each lead extends upwards and then horizontally. Each lead has a split pin mating area 932, 934, 936, 938 and 940 at its horizontal end, respectively. The socket also includes lower conductive plates 941 having vertically extending regions 942 and 944 . The lower plate 941 has horizontally extending regions 946 and 947 which mate with mating header pins through associated notches 946 and 947 extending from the housing. The housing also includes longitudinal sections 949a-949e between which contacts 950a-950e are inserted.

Referring to FIGS. 36-38 , a plug adapted to mate with receptacle 810 is indicated generally at 952 . The plug includes end walls 954 and 956 and an intermediate wall 958 . The plug also includes rows of signal pins 960a-960e. There is also a shortened row of ground pins 962 . Opposite the pins 960a-960e, there is a lead 974. Also on wall 954 are ground contacts 976 and 978 .

Referring to FIGS. 39-41 , a preferred insulating frame for the socket of FIG. 30 includes contacts 967 held by insulating members 969 . The contacts are integral with the insulator 969 and at one end they have leads and at the other end they have a V-shaped formation 1056 for mating with the pins in the pin receiving openings. Insulator 969 also includes mounting notches 975 and 977 for ground connections between the contacts and the inner shield.

It will be appreciated that a simple and cost-effective socket has been described which provides effective shielding and grounding between the motherboard and daughterboard, as well as conductors for signal transfer.

Although the present invention has been described in conjunction with preferred embodiments of various drawings, it should be understood that other similar embodiments can be used, or various modifications and supplements can be made to the described embodiments to achieve the same functions of the present invention and without departing from the scope of the invention. Therefore, the present invention should not be limited to any particular embodiment, but rather construed in breadth and scope as described in the appended claims.

Claims (12)

1. A receptacle for an electrical connector comprising a housing having a first face and a second face and a plurality of electrically conductive signal lead means each extending from said first face to said second face, said housing has a plurality of longitudinal sides located between said first and second sides, conductive shielding means superimposed on at least some of said longitudinal sides, and conductive inner shielding means interposed between at least some of said conductive signaling means between. 2. The jack of claim 1, wherein the inner shielding means includes a plurality of parallel longitudinal walls defining a plurality of longitudinal spaces between said longitudinal walls, one of said electrically conductive signaling means being located in each of said longitudinal spaces. 3. The jack of claim 2, wherein the electrically conductive signaling means is held within a plurality of insulating frames. 4. The jack of claim 3, wherein the conductive signaling means is crushed between adjacent inner conductive shielding means. 5. The socket of claim 4, wherein locking means are provided to secure each of said insulating bezels to the housing. 6. The socket of claim 5, wherein each inner longitudinal wall has a transverse extension, each said extension having means for engaging said extension with the U-shaped shield. 7. The socket of claim 6, wherein the laterally extending portion has a vertical locking tab which cooperates with a horizontal grommet protruding from the outer shield. 8. The socket of claim 7, wherein each inner longitudinal shield has means for connecting said shield to a plug. 9. The socket of claim 8, wherein the means for connecting said shielding means to the plug is resilient connecting means. 10. The socket of claim 1, wherein grounding means is provided. 11. An electrical connector combined with a receptacle comprising a receptacle for an electrical connector, the receptacle comprising a housing having a first face and a second face and a plurality of electrically conductive signal lead means, each of which leads from the above The first side extends to the second side, the housing has a plurality of longitudinal sides located between the first side and the second side, conductive shielding means superimposed on at least some of the longitudinal sides, conductive inner shielding means at least Interposed between some of said conductive signaling devices, a housing having a first face and a second face, each of a plurality of conductive devices extending from said first face to said second face, a plug having a conductive housing, The housing includes substantially parallel end walls facing inner surfaces thereof, an intermediate wall interposed between the opposing parallel end walls, the intermediate wall having a first face and a second face, wherein the first face of the intermediate wall The face is adjacent to the second face of the receptacle, a number of passages extend between the first and second faces of the intermediate wall, and a plurality of conductive signal pins pass through at least some of the above passages, and a separate grounding device is mounted on the conductive shell of the plug . 12. The socket of claim 11, wherein there is a ground contact on the bottom side.

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