CN116315776A

CN116315776A - Electric connector and electric connector assembly

Info

Publication number: CN116315776A
Application number: CN202310075361.1A
Authority: CN
Inventors: 陈小硕; 顾海山; 踪清
Original assignee: Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2023-01-16
Filing date: 2023-01-16
Publication date: 2023-06-23

Abstract

The invention discloses an electric connector and an electric connector assembly, wherein the electric connector comprises an electric insulation shell; a plurality of signal contacts supported by the electrically insulative housing and including a mating end and a mounting end, adjacent signal contacts forming differential signal pairs; wherein each of the plug-in mating ends includes a first extension section extending along a central axis and a folded-back portion extending from the first extension section; the folded back portion has a first inflection point protruding forward in the first direction from a first surface of the first extension section and a second inflection point protruding backward in the first direction from a second surface of the first extension section; a first contact portion is formed at the first inflection point, and a second contact portion is formed at the first surface of the first extension section; and a ground contact supported by the electrically insulative housing and including a ground mating end and a corresponding ground mounting end. The electric connector and the electric connector assembly can meet the requirement of high-speed transmission.

Description

Electric connector and electric connector assembly

Technical Field

The invention relates to an electric connector and an electric connector assembly.

Background

U.S. patent publication No.2011/0009011 discloses an electrical connector with edge-coupled differential signal pairs that can operate at 13GHz (approximately 26 gigabits/second) at an acceptable level of crosstalk. As technology continues to evolve, electrical connector production suppliers provide scalable, cost-effective solutions designed with individually shielded broadside-to-broadside differential signal pairs (twinax) for providing data transmission rates up to 40 gigabits per second. However, even a data transmission rate of 40 gigabits/second is increasingly inadequate to meet the current demand, and thus higher speed electrical connectors are being developed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to solve the technical problems that: a high-speed electrical connector and an electrical connector assembly are provided.

In order to solve the technical problems, the invention adopts a technical scheme that: there is provided an electrical connector comprising: an electrically insulating housing; a plurality of signal contacts supported by the electrically insulative housing and including a mating end and a mounting end, adjacent signal contacts forming differential signal pairs; wherein each of the plug-in mating ends includes a first extension section extending along a central axis and a folded-back portion extending from the first extension section; the folded back portion has a first inflection point protruding forward in the first direction from a first surface of the first extension section and a second inflection point protruding backward in the first direction from a second surface of the first extension section; a first contact portion is formed at the first inflection point, and a second contact portion is formed at the first surface of the first extension section; and a ground contact supported by the electrically insulative housing and including a ground mating end and a corresponding ground mounting end.

In order to solve the technical problems, the invention adopts another technical scheme that: providing an electrical connector assembly comprising a first electrical connector and a second electrical connector which is a complementary type of mating with the first electrical connector, wherein when a signal contact of the first electrical connector is mated with a corresponding complementary signal contact of the second electrical connector, a first contact portion of the signal contact of the first electrical connector abuts against a complementary mating end of the complementary signal contact and rides along the complementary mating end across a scraping distance until the first contact portion of the signal contact is in contact with a second contact portion of the complementary signal contact, the second contact portion of the signal contact is in contact with the first contact portion of the complementary signal contact; the mounting ends of the electrical contacts of the first electrical connector are mounted on the first substrate, and the mounting ends of the electrical contacts of the second electrical connector are mounted on the second substrate.

The electric connector and the electric connector assembly have the following beneficial effects: the corresponding matching ends of the electrical contacts adopt the folding parts of the closed-loop structure, so that the stability of high-speed signal transmission is facilitated; a convex block part with a specific structure is designed at one end, close to the corresponding matching end, of the lead frame, and the convex block part is limited at one side, far away from the complementary matching end, of the corresponding matching end of the electric contact, so that when each electric contact is scraped and extruded by the complementary electric contact of the complementary electric connector, the convex block part can support the corresponding matching end to prevent the electric contact from being damaged due to excessive elastic deformation; the vertical distance between the second inflection point and the first extension section is larger than the vertical distance between the first contact part and the first extension section, and the horizontal distance between the second inflection point and the central axis is larger than the horizontal distance between the first inflection point and the central axis, so that the second inflection point and the first inflection point are not symmetrical, the offset of the second inflection point to the central axis is larger, the second inflection point has directivity, the direction can be conveniently identified during installation and plugging, the problems of installation errors, plugging errors and the like are prevented, the effect of protecting the electric contact is further achieved, and the service life of the electric contact is prolonged; the design of at least one elongated through hole at the corresponding mating end of the ground contact may improve the spring properties of the corresponding mating end, which may enable the electrical connector and the electrical connector assembly of the present invention to achieve data transmission rates of at least as high as 56 gigabits/second.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a schematic structural view of an embodiment of an electrical connector assembly according to the present invention.

Fig. 2a and 2b are schematic structural views of the first electrical connector of fig. 1.

Fig. 3 is a top view of the first electrical connector of fig. 1.

Fig. 4 is a distribution diagram of a plurality of lead frames in fig. 3.

Fig. 5 is an exploded view of one of the lead frames of fig. 4.

Fig. 6 is a schematic view in the opposite direction to fig. 5.

Fig. 7 is a distribution diagram of a pair of differential signal pairs and ground contacts of fig. 5.

Fig. 8 is a side view of the electrical contact in a natural state.

Fig. 9 is a side view of a corresponding mating end of the electrical contact of fig. 8.

Fig. 10 is a mating state diagram of an electrical contact with a corresponding mating end and a complementary mating end of a complementary electrical contact in one embodiment.

Fig. 11 is a mating state diagram of an electrical contact with a corresponding mating end and a complementary mating end of a complementary electrical contact in one embodiment.

Fig. 12 is a mating state diagram of an electrical contact with a corresponding mating end and a complementary mating end of a complementary electrical contact in one embodiment.

Fig. 13 is a schematic structural view of the second electrical connector of fig. 1.

Fig. 14 is a top perspective view of the outer housing of fig. 13.

Fig. 15 is a bottom view of fig. 14.

Fig. 16 is a cross-sectional view of A-A in fig. 15.

Fig. 17 is a bottom view of fig. 13.

Fig. 18 is a distribution diagram of a plurality of lead frames in fig. 17.

Fig. 19 is an exploded view of one of the lead frames of fig. 18.

Fig. 20 is a schematic view in the opposite direction to fig. 19.

Fig. 21 is a perspective view of the other view of fig. 18.

Fig. 22 is a perspective view of the other view of fig. 18.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1, the electrical connector assembly of the present invention includes a first electrical connector 1000 and a second electrical connector 2000 that is complementary to the first electrical connector 1000 in a plug-in fit. The mounting end of the first electrical connector 1000 is electrically connected to a first substrate (not shown), the mating end of the first electrical connector 1000 is mated with the complementary mating end of the second electrical connector 2000 in a plugging manner, the mounting end of the second electrical connector 2000 is electrically connected to a second substrate (not shown), and the first substrate and the second substrate may be a printed circuit board, a back plate, etc. The first electrical connector 1000 and the second electrical connector 2000 are mating-plugged in a third direction, which may therefore be referred to as a mating-plugging direction, which is defined as a vertical direction Z according to the embodiment shown in the drawings. The first electrical connector 1000 and the second electrical connector 2000 may each have the same or similar structure or function, and the first electrical connector 1000 and the second electrical connector 2000 each include a plurality of electrical contacts and a dielectric or electrically insulating housing for supporting the plurality of electrical contacts. One end of the plurality of electrical contacts extends in a third direction Z out of a first end of the electrically insulating housing and the other end of the plurality of electrical contacts extends out of a second end of the electrically insulating housing, portions of the plurality of electrical contacts extending out of the first end of the electrically insulating housing forming respective mating ends 131 for mating with complementary electrical contacts 23, portions of the plurality of electrical contacts extending out of the second end of the electrically insulating housing forming respective mounting ends 133 for electrical connection with respective substrates. The first electrical connector 1000 may be a vertical electrical connector, i.e. an electrical connector having a linear shape along a mating direction, and the corresponding mating ends 131 and the corresponding mounting ends 133 of the plurality of electrical contacts of the vertical electrical connector extend from two opposite first ends and second ends of the electrically insulating housing, respectively. The first electrical connector 1000 may also be a right angle electrical connector, wherein the corresponding mating ends 131 of the electrical contacts of the right angle electrical connector extend out of a first end of the electrically insulating housing along a third direction Z, and the corresponding mounting ends 133 extend out of a second end of the electrically insulating housing perpendicular to the first end along a direction perpendicular to the third direction Z. According to the illustrated embodiment, the first electrical connector 1000 is referred to as a vertical electrical connector, and the second electrical connector 2000 is referred to as a right angle electrical connector.

Referring to fig. 2 to 12, the first electrical connector 1000 includes an electrical insulating housing 11 and a plurality of lead frames disposed on the electrical insulating housing 11 and spaced apart along a first direction, each lead frame is disposed along a second direction perpendicular to the first direction on a horizontal plane, a plurality of electrical contacts 13 are disposed on each lead frame along the second direction at intervals, a first gap J11 is formed between two adjacent electrical contacts 13, the plurality of electrical contacts 13 in each lead frame include a plurality of signal contacts 13a and at least one ground contact 13b, two adjacent signal contacts 13a form a set of differential signal pairs, a second gap J12 is disposed between each adjacent differential signal pair, and the ground contacts 13b are preferably disposed in a one-to-one correspondence with the plurality of ground contacts 13b in the second gap J12 between each adjacent differential signal pair. The plurality of signal contacts 13a and ground contacts 13b may also be distributed along, for example, "G-S-S, S-G-S, S-S-G", where S represents an electrical signal and G represents ground, and the plurality of electrical contacts 13 (including signal contacts 13a and ground contacts 13 b) distributed along the second direction on a line form a linear array, i.e., the plurality of signal contacts 13a and ground contacts 13b in each leadframe form a linear array. Each signal contact 13a includes a mating end 131a and a mounting end 133a, and the ground contact 13b includes a ground mating end 131b and a ground mounting end 133b. The electrical contacts 13 are vertical electrical contacts 13, and corresponding mating ends 131 and corresponding mounting ends 133 of the vertical electrical contacts 13 are distributed at two ends of the electrically insulating housing 11 along the Z-direction. In the illustrated embodiment, the first direction is defined as a lateral or row direction X and the second direction is defined as a longitudinal or column direction Y, such that the plurality of lead frames are spaced apart along the row direction, each lead frame extending along the column direction. The plurality of lead frames may be defined as eight lead frames, but it should be noted that the number of lead frames may be set according to specific use requirements, but mainly an even number of lead frames. Eight lead frames form a set of two opposing lead frame pairs 12, forming four lead frame pairs 12, wherein two lead frame pairs 12 are respectively located on two outer sides along the first direction X, the two outer lead frame pairs 12 being defined as a first outer lead frame pair 12a and a second outer lead frame pair 12d, the other two lead frame pairs 12 being located on an inner side between the two outer lead frame pairs along the first direction X, the two inner lead frame pairs 12 being defined as a first inner lead frame pair 12b and a second inner lead frame pair 12c, one of the lead frame pairs 12 being defined as a first lead frame 121, the plurality of electrical contacts 13 in the first lead frame 121 forming a first linear array 141, the other lead frame being defined as a second lead frame 122, the plurality of electrical contacts 13 in the second lead frame 122 forming a second linear array 142. The first and

second lead frames

121 and 122 are separated by a partition wall distributed along the second direction Y, that is, the first and second

linear arrays

141 and 142 are located at both sides of the partition wall along the first direction X, respectively. A column spacing channel is formed between each adjacent two of the leadframe pairs 12, a first column spacing channel 101 is formed between the first outside leadframe pair 12a and the first inside leadframe pair 12b, a second column spacing channel 102 is formed between the first inside leadframe pair 12b and the second inside leadframe pair 12c, and a third column spacing channel 103 is formed between the second inside leadframe pair 12c and the second outside leadframe pair 12 d. It should be understood that in other embodiments, the arrangement of the electrical contacts 13 is not limited to the description of the above embodiments, for example, the electrical contacts 13 may be directly supported on the electrically insulating housing 11 in a linear array, for example, the number of lead frames, the distribution manner may have other adaptation, and the like, and is not limited to the illustrated embodiment.

The electrically insulating housing 11 includes a coating portion 111 disposed along a third direction Z and a plugging mating portion 112, in the illustrated embodiment, the coating portion 111 includes an outer housing formed by enclosing a first side wall 11a and a second side wall 11b disposed in parallel and spaced apart from each other along a first direction X, a third side wall 11c and a fourth side wall 11d disposed in parallel and spaced apart from each other along a second direction Y, and seven inner partition walls formed in an inner cavity 111a of the outer housing, the seven inner partition walls being disposed in the inner cavity 111a of the outer housing at regular intervals along the first direction X, and both end surfaces of the seven inner partition walls along the third direction Z being flush with corresponding both end surfaces of the first to fourth side walls 11a to 11d, the seven inner partition walls dividing the inner cavity 111a into eight coating cavities 111c, at least one inner cavity wall up to all inner cavity walls of each coating cavity 111c being protruded inwardly with a plurality of ribs 111d, each rib 111d being adaptable to a length of the corresponding coating cavity 111c along the third direction Z. Each rib 111d may abut against both end surfaces corresponding to the respective lead frame housings 123 in the first direction X, thereby achieving the function of clamping the lead frame housings 123. The first end surface (upper end surface in the drawing) and the second end surface (lower end surface in the drawing) of the covering portion 111 (including the outer case and the inner partition wall) along the third direction Z may be defined as a mating abutment surface 111e and a mounting abutment surface 111f, respectively, for mating with the first substrate when mating with the complementary second electrical connector 2000. It should be understood that seven, eight, etc. words in the embodiments are each illustrated with the eight lead frames described above as being adapted, and are not intended as limitations of the electrical connector of the present invention.

The plug-in mating portion 112 includes a plurality of partition walls, for example, four partition walls, disposed at the first end of the outer housing at intervals along the first direction X, each of the partition walls extending along the second direction Y and having an extension length matching the length of each of the cladding cavities 111c, and each of the partition walls extending along the third direction Z and having an extension height according to the structure of the corresponding mating end 131 of the electrical contact 13. In the illustrated embodiment, four partition walls are provided in one-to-one correspondence with the first end faces of the first, third, fifth and seventh inner partition walls and may be integrally formed therewith, and thus, the four partition walls may be defined as first-row partition walls 112a, third-row partition walls 112c, fifth-row partition walls 112e and seventh-row partition walls 112g. The first column partition wall 112a is used for separating the first outer lead frame pair 12a, so that the first lead frame 121 and the second lead frame 122 of the first outer lead frame pair 12a are respectively located at two sides of the first column partition wall 112 a; the third column partition wall 112c is used for partitioning the first inner lead frame pair 12b, so that the first lead frame 121 and the second lead frame 122 of the first inner lead frame pair 12b are respectively located at two sides of the third column partition wall 112c, the fifth column partition wall 112e is used for partitioning the second inner lead frame pair 12c, so that the first lead frame 121 and the second lead frame 122 of the second inner lead frame pair 12c are respectively located at two sides of the fifth column partition wall 112e, the seventh column partition wall 112g is used for partitioning the second outer lead frame pair 12d, and the first lead frame 121 and the second lead frame 122 of the second outer lead frame pair 12d are respectively located at two sides of the seventh column partition wall 112g.

Each of the column partition walls 112a to 112g includes a linear array partition wall 1121 formed between the first and second lead frames 121 and 122 for partitioning the first and second

linear arrays

141 and 142, a first contact partition wall 1122 formed on a first surface of the linear array partition wall 1121 for partitioning the respective electrical contacts 13, and a second contact partition wall 1123 formed on a second surface of the linear array partition wall 1121 for partitioning the respective electrical contacts 13. The first contact dividing walls 1122 are a plurality of first contact dividing walls 1122 corresponding to the number of the electrical contacts 13 of the first linear array 141, the plurality of first contact dividing walls 1122 are distributed on the first surface of the linear array dividing wall 1121 at intervals along the second direction Y, and each first contact dividing wall 1122 extends along the first direction X toward the first gap J11 between the corresponding adjacent two electrical contacts 13, that is, the adjacent signal contacts 13a and the ground contacts 13b in the first linear array 141 are all separated by the corresponding first contact dividing walls 1122. The number and positions of the second contact dividing walls 1123 are similar to those of the first contact dividing walls 1122, and will not be described in detail herein. An accommodating space 1124 for accommodating the corresponding electrical contact 13 is formed between the adjacent two contact partition walls (adjacent two first contact partition walls 1122, adjacent two second contact partition walls 1123) and the linear array partition wall 1121, the accommodating space 1124 forms a first notch 1124a in the direction of the corresponding electrical contact 13, the accommodating space 1124 forms a second notch 1124b in the direction of the second electrical connector 2000, and the accommodating space 1124 forms a third notch 1124c communicating with the corresponding coating cavity 111c in the direction of the coating portion 111. In the illustrated embodiment, a plurality of connecting strips 115 for connecting the inner cavity wall with the partition wall are further formed on the inner cavity wall of each cladding cavity 111c along the second direction Y, one end of each connecting strip 115 is connected with the corresponding contact partition wall, the other end is connected with the corresponding inner cavity wall, and the first end face of each connecting strip 115 along the third direction Z is flush with the plugging abutting face 111 e.

The first electrical connector 1000 may further include an alignment structure disposed at the mating interface 111e, the alignment structure including a plurality of alignment members disposed at the mating interface 111e and outside the mating portion 112. In the illustrated embodiment, the plurality of alignment members may be provided to include two first alignment members 113 connected to both ends of the first and seventh

column partition walls

112a and 112g in the second direction Y, respectively, and two second alignment members 114 connected to both ends of the third and fifth

column partition walls

112c and 112e in the second direction Y, respectively. The first alignment member 113 may be configured to include a first alignment block 1131 and a second alignment block 1132 disposed at intervals outside the corresponding partition wall along the second direction Y, an inner side surface of the first alignment block 1131 is connected with an end of the linear array partition wall 1121 of the corresponding partition wall, and an outer side surface of the first alignment block 1131 is connected with an inner side surface of the second alignment block 1132 through a connection block 1133. The first and second alignment blocks 1132 are protruded from the plugging contact surface 111e along the third direction Z, the connection block 1133, the first alignment block 1131 and the second alignment block 1132 may be coaxially disposed, the size of the first and second alignment blocks 1131, 1132 along the first direction X is larger than the size of the connection block 1133 along the first direction X, the length of the first and second alignment blocks 1131, 1132 along the third direction Z is larger than the length of the connection block 1133 along the third direction Z, so that the two sides of the first alignment block 1131, the second alignment block 1132 and the connection block 1133 along the first direction X form a fourth notch 1134 and a fifth notch 1135, the sides of the first alignment block 1131, the second alignment block 1132 and the connection block 1133 along the third direction Z form a sixth notch 1136, the fourth notch 1134, the fifth notch 1135 and the sixth notch 1136 are communicated integrally to form a "" alignment groove "and an alignment protrusion 1132 is formed. The first and second alignment blocks 1131, 1132 are formed with

first guide surfaces

1131a, 1132a inclined toward the mounting end direction and toward the first direction X toward one end of the second electrical connector 2000, and the second alignment block 1132 may be further provided with a second guide surface 1132b inclined toward the mounting end direction and toward the first alignment block 1131 along the second direction Y. The second alignment member 114 may be provided as a third alignment block having the same or similar structure as the first alignment block 1131, and the third alignment block is connected to the corresponding end of the linear array partition 1121 of the corresponding partition. The first alignment block 1131 and the second alignment block 1132 may be coaxially disposed with the corresponding linear array partition wall 1121, and two surfaces of the first alignment block 1131 and the second alignment block 1132 along the first direction protrude from two surfaces of the corresponding linear array partition wall 1121, so that the first alignment block 1131 and the second alignment block 1132 may be used as a contact partition wall located on the end surface of the linear array partition wall 1121, which may save material costs and make the space layout more compact. The first alignment member 113 can achieve precise alignment in the plugging process from all directions through the arrangement of the first and second alignment blocks 1131 and 1132 and the connecting block 1133, and the third alignment block can achieve rough alignment in the plugging process.

Each of the lead frame pairs includes two lead frames (first and second lead frames 121, 122) disposed opposite to each other on both sides of the corresponding linear array partition wall 1121 in the first direction X. Each of the lead frames 121, 122 includes a lead frame housing 123 distributed along the second direction Y, a plurality of the signal contacts 13a and ground contacts 13b enclosed in the lead frame housing 123 at intervals along the second direction Y, and a plurality of shielding portions 124 disposed on the lead frame housing 123 and held with the plurality of ground contacts 13b for shielding signal interference between adjacent two of the lead frames. The respective mating ends 131 of the plurality of signal contacts 13a and ground contacts 13b extend beyond one end of the leadframe housing 123 in a third direction Z so as to be positioned in the corresponding receiving space 1124, and the respective mounting ends 133 extend beyond the other end of the leadframe housing 123 in a third direction Z. The plurality of signal contacts 13a and the ground contacts 13b that are wrapped in the leadframe housing 123 at intervals along the second direction Y form corresponding linear arrays, that is, the plurality of signal contacts 13a and the ground contacts 13b in the first leadframe 121 form the first linear array 141, and the plurality of signal contacts 13a and the ground contacts 13b in the second leadframe 122 form the second linear array 142. The first and second

linear arrays

141 and 142 are separated by a linear array partition wall 1121. The leadframe housing 123 is wrapped in the corresponding wrapping cavity 111c, a portion of the leadframe housing 123 near the corresponding mating end 131 corresponding to a portion between every two adjacent electrical contacts 13 is formed with a groove 1230, and an end of the leadframe housing 123 near the corresponding mating end 131 is formed with a protrusion 1231 for abutting against a second surface of the corresponding mating end 131 of the signal contact 13a and the ground contact 13b, where the second surface is a surface of the corresponding mating end 131 away from the complementary mating end 231 when the corresponding mating end 131 is mated with the complementary mating end 231 of the complementary electrical connector, and when the corresponding mating end 131 of each electrical contact 13 is mated with the complementary electrical connector, the protrusion 1231 can support the corresponding mating end 131 and prevent the electrical contact 13 from being damaged due to excessive elastic deformation when the corresponding mating end 131 of the electrical contact 13 is scratched and pressed by the complementary electrical contact 23 of the complementary electrical connector. The first surface or the second surface of the leadframe housing 123 along the first direction X is formed with first recesses 1232 at positions corresponding to the ground contacts 13b, the first recesses 1232 are distributed on the first surface or the second surface of the leadframe housing 123 along the third direction Z, and two ends of the first recesses 1232 along the third direction Z penetrate through the first surface and the second surface of the leadframe housing 123 along the first direction X, thereby forming two first through end portions 12321, and the ground contacts 13b wrapped in the leadframe housing 123 are at least partially exposed in the first recesses 1232. The leadframe housing 123 is formed with second recesses 1233 along the first direction X at the second surface or the first surface corresponding to the positions of the differential signal pairs, the second recesses 1233 are distributed on the second surface or the first surface of the leadframe housing 123 along the third direction Z, and two ends of the second recesses 1233 along the third direction Z penetrate through the first surface and the second surface of the leadframe housing 123 along the first direction X, thereby forming two second penetrating ends 12331, and the differential signal pairs wrapped in the leadframe housing 123 are at least partially exposed in the second recesses 1233, so as to optimize and improve the signal transmission environment.

The first surface or the second surface of the leadframe housing 123 is formed with a protrusion 1234, the shielding portion 124 is formed with a recess 1242 corresponding to the protrusion 1234, and the shielding portion 124 is connected to the ground contact 13b exposed in the first recess 1232 along the two sides of the second direction Y. Wherein: a first clamping hole 1320b is formed on the ground contact 13b at the portions exposed at the two first through end portions 12321 of the first recess 1232; the shielding portion 124 includes a shielding plate 1241 and first protruding portions 1243 formed at two side edges of the shielding plate 1241 along the second direction Y, the first protruding portions 1243 at two sides respectively correspond to the first hole portions 1320b of the two ground contacts 13b, and the first protruding portions 1243 extend from the two side edges of the shielding plate 1241 along the first direction X toward the first hole portions 1320b of the ground contacts 13b to be connected to the first hole portions 1320b.

The respective mating ends 131 of the plurality of signal contacts 13a and the ground contacts 13b of the lead frame extend from the third recess 1124c communicating with the covering cavity 111c, and the respective mating end 131 of each of the extending electrical contacts 13 is located in the corresponding receiving space 1124, and a third gap J13 (see fig. 3) is formed between the surface of the linear array partition wall 1121 and the linear array partition wall 1121 opposite to the respective mating end 131 of each electrical contact 13, and each electrical contact 13 is pressed by the scraping force of the complementary electrical contact 23 to move toward the linear array partition wall 1121 without being damaged by the linear array partition wall 1121 when being in plug-in engagement with the corresponding complementary electrical contact 23 of the complementary electrical connector. The respective mounting ends 133 of the plurality of signal contacts 13a and ground contacts 13b extend out of the leadframe and outer housing in a third direction Z, with portions of the plurality of signal contacts 13a and ground contacts 13b buried in the leadframe housing 123 forming buried sections 132 corresponding to the electrical contacts 13.

With continued reference to fig. 7-12, in the illustrated embodiment, the signal and

ground contacts

13a, 13b are generally identical in structure, each having a respective mating end 131, a respective mounting end 133, and a respective buried section 132 therebetween and buried in the leadframe housing 123, the respective mounting end 133 and the respective buried section 132 may be, but are not limited to being, coplanar. In this embodiment, the mounting ends 133 of the signal contacts 13a and the ground contacts 13b and the buried sections 132 may have the same central axis C1, the mating ends 131 may have a central axis C2, the central axis C2 may be offset from the central axis C1 in the first direction X and parallel or infinitely near parallel, the central axis C2 of the mating ends 131 may be close to the complementary mating ends 231 in the first direction X (forward direction), and the central axis C1 of the mounting ends 133 may be far from the complementary mating ends 231 in the first direction X (reverse direction). The buried section 132 of the signal contact 13a has a seventh recess 1321a near one adjacent ground contact 13b, the side portion of the buried section 132 of the ground contact 13b corresponding to the seventh recess 1321a is formed with a convex edge 1321b, and the convex edges 1321b on both sides make the length of a section of the buried section 132 of the ground contact 13b located on both sides of the convex edge 1321b in the second direction Y greater than the length of a section of the buried section 132 located on the corresponding direction where the convex edge 1321b is not located, so that the section of the buried section 132 where the convex edge 1321b is located can be a wide section 1322b and the section where the convex edge 1321b is not located is a narrow section 1323b. The first engaging hole 1320b is provided on the wide surface portion 1322b of the buried section 132, and specifically, two pairs of first engaging holes 1320b may be provided on both ends of the wide surface portion 1322b in the third direction Z.

The two side surfaces of the signal contact 13a facing the first direction X are defined as a first surface 1301a and a second surface 1302a, and the two side surfaces of the ground contact 13b facing the first direction X are defined as a first surface 1301b and a second surface 1302b. The lengths of the first surface 1301a and the second surface 1302a of the signal contact 13a along the second direction Y are smaller than the lengths of the first surface 1301b and the second surface 1302b of the ground contact 13b in the corresponding directions. It should be appreciated that the ground contact 13b may be configured differently than the signal contact 13a, and may be configured with reference to any of the existing ground contacts 13 b.

In the illustrated embodiment, the respective mounting ends 133 of each of the signal contacts 13a and the ground contacts 13b may be configured to: each mating end (the plug mating end 131a of the signal contact 13a and the ground mating end 131b of the ground contact 13 b) includes a first extension segment 1311 extending along the central axis C2 of the corresponding mating end 131 and a fold-back portion extending from the first extension segment 1311. The first extension segment 1311 is divided into two subsections along the Z-axis direction, wherein one subsection is a vertical segment 13111 abutting against the boss 1231, and the other subsection is a tilting segment 13112 extending obliquely from the vertical segment 13111 (away from the complementary mating end 231) in the first direction X in a reverse direction, and correspondingly, a section of the central axis C2 corresponding to the vertical segment 13111 is a vertical axis segment C21, and a section of the central axis C2 corresponding to the tilting segment 13112 is a tilting axis segment C22. The return has a first inflection point 1313 protruding forward from the first surface 1301a, b in the first direction X and a second inflection point 1315 protruding backward from the second surface 1302a, b of the first extension section 1311 in the first direction X; a first contact portion 1313a is formed at the first inflection point 1313, and a second contact portion 1311a is formed at the first surfaces 1301a, b of the first extension section 1311. The distance from the first contact point 1313a to the second inflection point 1315 is 0.5 to 0.95mm. The horizontal distance between the central axis C2 of the mating end 131a and the central axis C1 of the mounting end is 0.1-0.5 mm, and more specifically, the horizontal distance between the vertical axis segment C21 of the central axis C2 and the central axis C1 is 0.1-0.5 mm. Of the central axis C1 and the central axis C2, the central axis C2 is closer to the complementary mating end 231.

The folded back portion includes a second extension section 1312 extending from the first extension section 1311 and being offset from the central axis C2 in the first direction X, a folded section 1314 formed by being folded back from the second extension section 1312 in the first direction X, and a folded back section 1316 formed by extending from the folded section 1314 toward the first extension section 1311; the first inflection point 1313 is formed at the junction of the second extension section 1312 and the inflection section 1314, the second inflection point 1315 is formed at the junction of the inflection section 1314 and the inflection section 1316, and the first contact point 1313a is formed at the first surface 1301a, b of the first inflection point 1313 that is remote from the second inflection point 1315 along the first direction X. The first and second surfaces of the first extension section 1311 of the signal contact 13a and the ground contact 13b are rectangular, the second extension section 1312 has a rectangular section 13121 close to the first extension section 1311 and a trapezoid section 13122 extending from the rectangular section 13121 to a distance away from the first extension section 1311, the first and second surfaces of the trapezoid section 13122 taper along the length of the second direction Y to a distance away from the first extension section 1311, and a plurality of elongated through holes 13123, such as two elongated through holes 13123, are distributed on the rectangular section 13121 of the ground contact 13b at intervals along the second direction Y, and the length of each elongated through hole 13123 is distributed along the third direction Z to adjust the elastic strength of the rectangular section 13121 of the ground contact 13 b.

After the plurality of electrical contacts 13 are assembled to the electrically insulating housing 11, the first contact location 1313a of each mating end of the first linear array 141 is oriented opposite the first contact location 1313a of each mating end of the second linear array 142. The corresponding mating ends 131 are located in the respective receiving spaces 1124, and the second inflection points 1315 and the folded-back sections 1316 of the corresponding mating ends 131 are each close to the corresponding linear array partition wall 1121 with the third gap J13 therebetween, and the first inflection points 1313 and the second extension sections 1312 are distant from the linear array partition wall 1121 in the first direction X. The bending section 1314 between the first inflection point 1313 and the second inflection point 1315 faces the second recess 1124b of the receiving space 1124, and the first surfaces 1301a, b of the first inflection point 1313 and the second extension section 1312 and the first surfaces 1301a, b of the first extension section 1311 face the third recess 1124 c. The first surfaces 1301a, b of the second extension section 1312 are formed with a convex hull 1317 protruding forward in the first direction X, and the convex hull 1317 may be disposed at the rectangular section 13121 of the second extension section 1312. The provision of the convex hull 1317 not only increases the structural strength at the second extension section 1312, but also provides an extended length of space for the return section 1316, which is more conducive to signal transmission regulation.

The curved section 1314 may be designed as an arcuate section with one end in arcuate transition with the second extension section 1312 and the other end in arcuate transition with the return section 1316. The bending section 1314 may also be configured as a bending section having one end in bending transition with the second extension section 1312 and the other end in bending transition with the return section 1316. The folded back section 1316 may be designed to overlap the second surfaces 1302a, b of the second extension section 1312 at the ends, and the folded back section 1316 may overlap the lower section (see fig. 12) or the upper section (see fig. 11) of the second extension section 1312 at the ends. The distance from the first contact point 1313a to the end of the folded back section 1316 is 3.05 to 5mm. A third recess 1318 (see fig. 6) recessed toward the first surface 1301a, b is also formed at a position of the second surface 1302a, b of the first extension section 1311 or the second extension section 1312 corresponding to the end of the folded-back section 1316, and the end of the folded-back section 1316 is suspended or overlapped in the third recess 1318. When the folded-back section 1316 is designed to overhang or overlap the second surfaces 1302a, b of the second extension section 1312, the third recess 1318 may be designed to overlap the convex hull 1317, so that the third recess 1318 and the convex hull 1317 are integrally formed, and when the convex hull 1317 is formed by punching or the like, the third recess 1318 is embodied on the second surfaces 1302a, b along with the punching of the convex hull 1317, which may reduce the difficulty and complexity of the manufacturing process. The corresponding mating end 131 of the electrical connector assembly of the present invention forms a closed loop by the overlapping design of the ends of the first contact portion 1313a, the second contact portion 1311a and the folded back section 1316, which enables at least 56G high speed transmission of the two electrical connectors after mating.

In the illustrated embodiment, the vertical distance from the second inflection point 1315 to the first extension section 1311 is greater than the vertical distance from the first contact portion 1313a to the first extension section 1311, and the horizontal distance from the second inflection point 1315 to the central axis C2 is greater than the horizontal distance from the first inflection point 1313 to the central axis C2, so that the second inflection point 1315 and the first inflection point 1313 do not have symmetry, and the offset of the second inflection point 1315 from the central axis C2 is greater, so that the second inflection point 1315 has directionality, is convenient for installation and recognition of directions during plugging, prevents installation errors, plugging errors, and the like, further plays a role in protecting the electrical contact 13, and prolongs the service life of the electrical contact 13.

In the illustrated embodiment, the first contact portion 1313a abuts the complementary mating end 231 of the complementary signal contact when the signal contact 13a is mated with a corresponding complementary signal contact, and rides along the complementary mating end 231 a scraping distance until the first contact portion 1313a of the signal contact 13a contacts the second contact portion 1311a of the complementary signal contact, and the second contact portion 1311a of the signal contact 13a contacts the first contact portion 1313a of the complementary signal contact. The convexity of the convex hull 1317 of the signal contact 13a is parallel to the convexity of the convex hull of the complementary signal contact and is separated by a distance of 0-0.2 mm; the vertical distance from the second inflection point 1315 of the signal contact 13a to the second inflection point 1315 of the complementary signal contact is 2.5-4.5 mm. The horizontal distance between the second inflection point 1315 of the signal contact 13a and the second inflection point 1315 of the complementary signal contact is 0.7 to 2.0mm. The second contact portion 1311a of the signal contact 13a, a section of the first extension section 1311 from the second contact portion 1311a to the second extension section 1312, the first contact portion 1313a, and the second contact portion 1311a of the complementary signal contact, a section of the first extension section 1311 from the second contact portion 1311a to the second extension section 1312, and the first contact portion 1313a enclose to form an approximately parallelogram space 1319; the second extension sections 1312 of the signal contacts 13a and the second extension sections 1312 of the complementary signal contacts form two long parallel sides of a parallelogram, and the first extension sections 1311 of the signal contacts 13a and the first extension sections 1311 of the complementary signal contacts form two short parallel sides of the parallelogram.

Referring to fig. 1 and 13, the second electrical connector 2000 may have a structure similar to that of the first electrical connector 1000, and the second electrical connector 2000 may be a complementary electrical connector for mating with the first electrical connector 1000. The second electrical connector 2000 includes an electrical insulating housing 21 and a plurality of lead frames disposed on the electrical insulating housing 21 and spaced apart along a first direction X, each lead frame being disposed along a second direction Y perpendicular to the first direction X on a horizontal plane, each lead frame being provided with a plurality of electrical contacts 23 spaced apart along the second direction Y, the electrical contacts 23 being mated as complementary electrical contacts 23 with the electrical contacts 13 of the first electrical connector, a first gap J21 being formed between two adjacent electrical contacts 23, a plurality of the electrical contacts 23 in each lead frame including a plurality of signal contacts 23a and at least one ground contact 23b, two adjacent signal contacts 23a forming a set of differential signal pairs, each adjacent differential signal pair having a second gap J22 therebetween, the ground contacts 23b preferably being disposed in a one-to-one correspondence with the plurality of ground contacts 23b in the second gap J22 between each adjacent differential signal pair. The plurality of signal contacts 23a and ground contacts 23b may also be distributed along, for example, "G-S-S, S-G-S, S-S-G", where S represents an electrical signal and G represents ground, and the plurality of electrical contacts 23 (including the signal contacts 23a and ground contacts 23 b) distributed along the second direction Y on a line form a linear array, i.e., the plurality of signal contacts 23a and ground contacts 23b in each leadframe form a linear array. Each signal contact 23a includes a mating end and a mounting end, and the ground contact 23b includes a ground mating end and a ground mounting end. The electrical contacts 23 are right angle electrical contacts 23. In the illustrated embodiment, the first direction X is defined as a lateral or row direction X and the second direction Y is defined as a longitudinal or column direction Y, such that a plurality of lead frames are spaced apart along the row direction, each lead frame extending along the column direction. The plurality of lead frames is defined as eight lead frames, as compatible with the first electrical connector 1000. The eight lead frames have single lead frames respectively located on both outer sides in the first direction X, which are defined as a first outer single lead frame 22a and a second outer single lead frame 22e, and three sets of lead frame pairs located inside the first and second outer single lead frames 22e, which are defined as a first inner lead frame pair 22b, a second inner lead frame pair 22c, and a third inner lead frame pair 22d. In each leadframe pair, one leadframe may be defined as a first leadframe 221, a plurality of electrical contacts 23 in the first leadframe 221 forming a first linear array, and the other leadframe may be defined as a second leadframe 222, a plurality of electrical contacts 23 in the second leadframe 222 forming a second linear array. The first lead frame 221 and the second lead frame 222 are separated by a partition wall distributed along the second direction Y, that is, the first linear array and the second linear array are respectively located at two sides of the partition wall along the first direction X. Column spacing channels are formed between adjacent pairs of lead frames, between a pair of lead frames and a corresponding outer single lead frame, in the illustrated embodiment, a first column spacing channel 201 is formed between a first outer single lead frame 22a and an adjacent first inner lead frame pair 22b, a second column spacing channel 202 is formed between a first inner lead frame pair 22b and a second inner lead frame pair 22c, a third column spacing channel 203 is formed between a second inner lead frame pair 22c and a third inner lead frame pair 22d, and a fourth column spacing channel 204 is formed between a third inner lead frame pair 22d and a second outer single lead frame 22 e. When the second electrical connector 2000 is complementary to the first electrical connector 1000, the first spaced channels of the second electrical connector 2000 are configured to receive the first outer lead frame pair 12a of the first electrical connector 1000, the second spaced channels 202 of the second electrical connector 2000 are configured to receive the first inner lead frame pair 12b of the first electrical connector 1000, the third spaced channels 203 of the second electrical connector 2000 are configured to receive the second inner lead frame pair 12c of the first electrical connector 1000, and the fourth spaced channels 204 of the second electrical connector 2000 are configured to receive the second outer lead frame pair 12d of the first electrical connector 1000; the first column spacing channel 101 of the first electrical connector 1000 is configured to receive the first inner lead frame pair 22b of the second electrical connector 2000, the second column spacing channel 102 of the first electrical connector 1000 is configured to receive the second inner lead frame pair 22c of the second electrical connector 2000, and the third column spacing channel 103 of the first electrical connector 1000 is configured to receive the third inner lead frame pair 22d of the second electrical connector 2000.

Referring to fig. 13 to 22, the side surface of the electrically insulating housing 21 facing in the first direction X is L-shaped, a first end surface (lower end surface) of the electrically insulating housing 21 along the third direction Z may be defined as a mating contact surface 211e when the electrically insulating housing is mated with the first electrical connector 1000, and a second end surface of the electrically insulating housing along the second direction Y may be defined as a mounting contact surface 211f (transverse end surface) when the electrically insulating housing is mated with the second substrate. The electrically insulating housing 21 comprises a cladding 211 arranged along the third direction Z and a plug-in mating part 212. The cladding portion 211 includes an outer case, seven inner partition walls 211b formed in an inner cavity 211a of the outer case, the seven inner partition walls 211b being disposed in the inner cavity 211a of the outer case at uniform intervals along a first direction X, dividing the inner cavity 211a into eight cladding cavities 211c. It should be understood that seven, eight, etc. words in the embodiments are each illustrated with the eight lead frames described above as being adapted, and are not intended as limitations of the electrical connector of the present invention.

The outer casing includes a first side wall 21a and a second side wall 21b spaced along a first direction X and arranged in parallel, and a third side wall 21c arranged along a second direction Y and connected to one ends (front ends in the drawing) of the first side wall 21a and the second side wall 21b in the second direction Y, wherein one end surface of the first side wall 21a and the second side wall 21b, which is far away from the third side wall 21c, forms the mounting abutment surface 211f, and the enclosing structure of the first side wall 21a, the second side wall 21b and the third side wall 21c enables one end of the outer casing, which is far away from the plugging engagement direction in a third direction Z, one end of the outer casing, which is far away from the third side wall 21c in the second direction Y, forms an opening, and the shape of each of the seven inner partition walls 211b is adapted to the first side wall 21a and the second side wall 21b, one end of each of the partitioned covering cavities 211c, which is far away from the plugging abutment surface 211e in the third direction Z, and one end of the third side wall 21c, which is far away from the opening in the second direction Y, are communicated with the outside.

The plugging fitting portion 212 includes a plugging housing, a plugging space 212a formed in the plugging housing, and a plurality of partition walls, for example, three partition walls, formed in the plugging space 212a at intervals along the first direction X, wherein the plugging abutment surface 211e is formed by the plurality of partition walls and an end surface of the plugging housing facing the plugging fitting direction. In the illustrated embodiment, the plug housing includes a first outer peripheral wall 21a1 extending from a first side wall 21a in a plug-fit direction, a second outer peripheral wall 21b1 extending from a second side wall 21b in the plug-fit direction, a third outer peripheral wall 21c1 extending from a third side wall 21c in the plug-fit direction, and a fourth outer peripheral wall 21d connected to both ends of the first and second outer peripheral walls 21a1 and 21b1 remote from the third outer peripheral wall 21c 1. The lengths of the first and second outer peripheral walls 21a1 and 21b1 in the second direction Y are greater than the lengths of the first and

second side walls

21a and 21b in the respective directions, and the first and second outer peripheral walls 21a1 and 21b1 protrude from the first and

second side walls

21a and 21b in a direction away from the third side wall 21c (a rear direction in the drawing), so that the insertion space 212a has a portion that protrudes beyond the cladding chamber in a direction away from the third side wall 21c, the portion that protrudes beyond the cladding chamber communicating with the outside directly in the third direction Z. The above-mentioned seven inner partition walls 211b each protrude into the insertion space 212a toward one end of the insertion mating direction, a portion protruding into the insertion space 212a may be defined as a first protruding section 211b1, a distance by which the first protruding section 211b1 protrudes into the insertion space 212a may be set according to various embodiments, the first protruding section 211b1 further extends in the second direction Y toward the fourth outer peripheral wall 21d and is connected thereto, thereby forming a first extending section 211b2, a first catching slit 211b3 is formed at one end of the first extending section 211b2 away from the first protruding section 211b1, and the first catching slit 211b3 penetrates the first extending section 211b2 in a direction away from the first protruding section 211b1 and in a direction away from the insertion direction.

The three partition walls are erected on one end face of the second, fourth and sixth inner partition walls 211b facing the mating direction of the plug-in connection in one-to-one correspondence, and may be integrally formed therewith. Accordingly, the three partition walls may be defined as a second column partition wall 212b, a fourth column partition wall 212d, and a sixth column partition wall 212f, which are offset from the first column partition wall 112a, the third column partition wall 112c, the fifth column partition wall 112e, and the seventh column partition wall 112g of the first electrical connector 1000, the second inner partition wall 211b and the second column partition wall 212b for partitioning the first lead frame 221 and the second lead frame 222 of the first inner lead frame pair 22b, the fourth inner partition wall 211b and the fourth column partition wall 212d for partitioning the first lead frame 221 and the second lead frame 222 of the second inner lead frame pair 22c, and the sixth inner partition wall 211b and the sixth column partition wall 212f for partitioning the first lead frame 221 and the second lead frame 222 of the third inner lead frame pair 22 d.

Each column of partition walls includes a linear array partition wall 2121 formed between the first lead frame 221 and the second lead frame 222 for partitioning the first linear array and the second linear array, a first contact partition wall 2122 formed on a first surface of the linear array partition wall 2121 for partitioning the respective electrical contacts 23, and a second contact partition wall 2123 formed on a second surface of the linear array partition wall 2121 for partitioning the respective electrical contacts 23. The first contact dividing walls 2122 are a plurality of first contact dividing walls 2122 corresponding to the number of the electrical contacts 23 of the first linear array, the plurality of first contact dividing walls 2122 are distributed on the first surface of the linear array dividing wall 2121 at intervals along the second direction Y, and each first contact dividing wall 2122 extends along the first direction X along a first gap J21 between two corresponding electrical contacts 23, that is, adjacent signal contacts 23a in the first linear array and adjacent signal contacts 23a and ground contacts 23b are all separated by corresponding first contact dividing walls 2122. The number and positions of the second contact partition walls 2123 are similar to those of the first contact partition walls 2122, and will not be described in detail here. An accommodating space 2124 in which the corresponding electrical contact 23 is accommodated is formed by enclosing between the adjacent two contact partition walls (adjacent two first contact partition walls 2122, adjacent two second contact partition walls 2123) and the linear array partition wall 2121, the accommodating space 2124 forms a first recess in the direction of the corresponding electrical contact 23 along the first direction X, the accommodating space 2124 forms a second recess in the direction of the second electrical connector 2000 along the third direction Z, and the accommodating space 2124 forms a third recess in communication with the corresponding cladding cavity 211c along the direction toward the cladding 211. In the illustrated embodiment, corresponding to the first and second outer single lead frames 22a and 22e, third contact partition walls 2125 for partitioning the respective electrical contacts 23 are provided at the inner side walls of the first and second outer peripheral walls 21a1 and 21b1 with reference to the structures of the partition walls, and adjacent two third contact partition walls 2125 and the inner side surfaces of the corresponding outer peripheral walls are provided with accommodation spaces 2124 for accommodating the corresponding electrical contacts 23.

The second electrical connector 2000 may further include an alignment structure disposed on the mating abutment surface 211e, and the alignment structure of the second electrical connector 2000 is configured to be aligned with the alignment structure of the first electrical connector 1000 when the second electrical connector 2000 is mated with the first electrical connector 1000. The alignment structure of the second electrical connector 2000 includes a plurality of alignment members disposed at the mating abutment surface 211e and located at the outer periphery of the mating portion 212, the plurality of alignment members being defined as complementary alignment members that are complementary mating with the first electrical connector 1000. The complementary alignment members may be provided to include two first complementary alignment members 213 formed at positions of the outer sides of the third and fourth outer side walls 21c1 and 21d corresponding to the two first alignment members of the first electrical connector 1000, and two second complementary alignment members 214 formed at positions of the inner sides of the third and fourth outer side walls 21c1 and 21d corresponding to the two second alignment members. The first complementary aligning member 213 may include a first complementary recess 2131, a second complementary recess 2132 and a partition 2133 disposed between the first complementary recess 2131 and the second complementary recess 2132 at intervals along the second direction Y, wherein the first complementary recess 2131 is shaped to be aligned with the first alignment block 1131 in a complementary manner, the second complementary recess 2132 is shaped to be aligned with the second alignment block 1132 in a complementary manner, and a U-shaped recess 2134 is formed in the partition 2133 at a position corresponding to the connection block 1133 in a complementary manner to be aligned with the connection block 1133. The second complementary alignment member 214 is a third complementary recess 2141 that is shaped to mate with a third alignment block of the first electrical connector 1000.

Each of the lead frame pairs includes two lead frames (first and second lead frames 222) disposed opposite to each other on both sides of the linear array partition 2121 in the first direction X. Each lead frame (including the first and second lead frames 222, the first and second outside single lead frames 22 e) includes a lead frame housing 223, a plurality of the signal contacts 23a and ground contacts 23b enclosed in the lead frame housing 223 at intervals along the second direction Y, and a shielding plate 224 provided on the lead frame housing 223 for shielding signals between the ground contacts 23b and adjacent differential signal pairs, respective complementary mating ends 231 of the plurality of the signal contacts 23a and ground contacts 23b extending out of one end of the lead frame housing 223 in the third direction Z so as to be located in the corresponding accommodation space 2124, and respective complementary mating ends 231 of each electrical contact 23 are formed with a third gap J23 between a surface of the line array partition wall 2121 and the line array partition wall 2121, each electrical contact 23 being pressed against the respective complementary mating end 2121 by scraping force of the corresponding electrical contact 13 while being in plug-in engagement with the corresponding electrical contact 13 of the first electrical connector without being damaged by the respective complementary mating end 231 to the line array partition wall 2121. The respective mounting ends 233 of the plurality of signal contacts 23a and ground contacts 23b extend out of the leadframe housing 223 in the second direction Y. It should be appreciated that the respective mounting ends 233 of the plurality of signal contacts 23a and ground contacts 23b may also extend out of the leadframe housing 223 in the first direction X, only so long as the first direction X is a direction that is at right angles to the third direction Z.

The leadframe housing 223 is coated in the corresponding coating cavity 211c, one end of the leadframe housing 223 near the corresponding complementary mating end 231 is formed with a protruding stop 2231 for abutting against the second surface of the mating ends of the signal contact 23a and the ground contact 23b, where the second surface is a surface of the corresponding complementary mating end 231 far away from the corresponding mating end 131 of the first electrical connector when the corresponding complementary mating end 231 of each electrical contact 23 is mated with the corresponding mating end 131 of the first electrical connector, and the protruding stop 2231 can support the corresponding complementary mating end 231 when each electrical contact 23 is scratched and pressed by the corresponding electrical contact 13 of the first electrical connector when the corresponding complementary mating end 231 of each electrical contact 23 is mated with the first electrical connector, so as to prevent loosening, deformation, etc. of the electrical contacts 23. In the illustrated embodiment, the end of the leadframe housing 223 adjacent to the mating end protrudes into the mating space 212a in the third direction Z, and the portion protruding into the mating space 212a may be defined as a second protruding section 223a, the protruding distance of the second protruding section 223a is adapted to the protruding distance of the first protruding section 211b1, the second protruding section 223a further extends in the second direction Y toward the fourth outer peripheral wall 21d and closes the fourth outer peripheral wall 21d, thereby forming a second extending section 223b, and the end of the second extending section 223b remote from the second protruding section 223a is formed with a sinking step 223c, and the mesa of the sinking step 223c is lower than the bottom surface (the side adjacent to the mating direction) of the first clamping slot 211b 3.

The plurality of signal contacts 23a and the ground contacts 23b that are wrapped in the leadframe housing 223 at intervals along the second direction Y form a corresponding linear array, that is, the plurality of signal contacts 23a and the ground contacts 23b in the first leadframe 221 form a first linear array, and the plurality of signal contacts 23a and the ground contacts 23b in the second leadframe 222 form a second linear array. The first and second linear arrays are separated by a linear array divider 2121 and are disposed opposite each other, i.e., the first contact locations 2313a of the electrical contacts 23 of the first linear array on a first side of the linear array divider 2121 and the first contact locations 2313a of the electrical contacts 23 of the second linear array on a second side of the linear array divider face opposite each other. The first end of the first linear array along the second direction Y is a single non-coupling contact, and the first end of the first linear array along the second direction Y to the second end are arranged in a crossing mode of the grounding contact 23b and the differential signal pair; the second end of the second linear array is a single non-coupling contact, and the direction from the second end to the first end of the second linear array is arranged in a mode that the ground contact 23b and the differential signal pair are crossed. The respective complementary mating ends 231 of the plurality of electrical contacts 23 in each leadframe are spaced apart along the second direction Y at an end of the second protruding section 223a facing the mating direction, wherein at least one electrical contact 23 is spaced apart at an end of the second extending section 223b facing the mating direction. The respective mounting ends 233 of the plurality of electrical contacts 23 in each leadframe are spaced apart along the third direction Z at one end of the leadframe housing 223, with the buried sections of each electrical contact 23 buried in the leadframe housing 223 being distributed in an arc-shaped manner in the leadframe housing 223. In the illustrated embodiment, the structures or functions of the respective complementary mating ends 231 and mounting ends of the signal contacts 23a and the ground contacts 23b are the same as or similar to the respective mating ends 131 and respective mounting ends 233 of the first electrical connector 1000 described above, except that the plurality of signal contacts 23a and ground contacts 23b of the second electrical connector 2000 are adapted to be arcuately shaped in order to accommodate the structure of the right angle electrical connection.

The shielding sheet 224 is attached to the leadframe housing 223 at a first surface or a second surface along a first direction X. The shielding piece 224 protrudes into the plugging space 212a along a third direction Z at an end close to the plugging engagement end, a portion protruding into the plugging space 212a may be defined as a third protruding section 224a, a protruding distance of the third protruding section 224a is adapted to protruding distances of the first protruding section 211b1 and the second protruding section 223a, the third protruding section 224a further extends along a second direction Y toward the fourth outer peripheral wall 21d and closes the fourth outer peripheral wall 21d, thereby forming a third extending section 224b, and a second clamping slit 224c is formed at a position facing the first clamping slit 211b3 in the first direction X on the third extending section 224 b.

The surface of the shielding plate 224 opposite to the ground contact 23b is formed with a matching rib 2242, the rib 2242 is composed of a plurality of rib segments distributed at intervals along the length direction of the ground contact 23b, and each rib segment is formed with a second protruding clamping part 2243 facing the ground contact 23 b. A first slit 2232 is formed on a surface of the lead frame case 223 facing the ribs 2242, the first slit 2232 penetrating the surface of the lead frame case 223 in a direction facing the ribs 2242; the length of the first slit 2232 and the ribs 2242 is more than half the length between the ground mating end and the mounting end of the ground contact 23b that are aligned with each other. The first slits 2232 are formed by a plurality of first slit sections distributed at intervals along the length direction of the ground contact 23b, and each first slit section is further formed with a second clamping hole portion 2233 penetrating through the lead frame housing 223 along the first direction X, the second clamping hole portions 2233 are in one-to-one correspondence with the second clamping convex portions 2243, the shielding pieces 224 are matched with the first slits 2232 through the ribs 2242, and the second clamping convex portions 2243 are matched with the second clamping hole portions 2233 so as to be connected to the first surface or the second surface of the lead frame housing 223.

Second slits 2234 are distributed on the surface of the lead frame housing 223 facing away from the shielding sheet 224 along the length direction of the differential signal pair, and the second slits 2234 penetrate through the surface of the lead frame housing 223 along the direction facing away from the shielding sheet 224; the length of the second slit 2234 is more than half of the length between the mating end and the mounting end of the differential signal pair facing away from each other. The opposite sides of each differential signal pair are respectively provided with a plurality of pairs of first lugs 232a in a protruding mode in opposite directions, the pairs of first lugs 232a are distributed on the opposite sides of the differential signal pair along the length direction of the differential signal pair, and the distance between the two opposite first lugs 232a is greater than zero and smaller than the distance between the two opposite sides; each differential signal pair and two opposite sides of the adjacent ground contact 23b respectively protrude towards opposite directions to form a plurality of pairs of second lugs 232b, and each pair of second lugs 232b is positioned on the same straight line with a corresponding pair of first lugs 232a along the second direction Y; the second slit 2234 is formed by a plurality of second slit segments which are distributed at intervals along the length direction of the differential signal pair and are in one-to-one correspondence with the plurality of pairs of first lugs 232a and second lugs 232 b; the second slit section is formed with a third slit 2235 for exposing the corresponding pair of first lugs 232a and second lugs 232b to the leadframe housing 223 in a direction away from the shielding sheet 224, and the third slit 2235 and the corresponding second slit section are disposed in a mutually perpendicular manner.

The lead frame housing 223 is formed with a first through hole 2236 penetrating in the first direction X at a position corresponding to each ground contact 23b, and in the illustrated embodiment, the first through holes 2236 are formed at intervals in the second direction Y at the second protruding section 223 a. The portion of the ground contact 23b located in the first through hole 2236 is shielded by the shielding sheet 224 on the side facing the shielding sheet 224, and the side facing away from the shielding sheet 224 is exposed to the outside through the first through hole 2236. In the illustrated embodiment, the first grounding strip 25 is attached to a surface of the second protruding section 223a facing away from the shielding sheet 224, the first grounding strip 25 has a main body section 25a attached to a surface of the second protruding section 223a facing away from the shielding sheet 224, and a fourth extending section 25b formed by extending from the main body section 25a along the second direction Y toward the fourth outer peripheral wall 21d, the fourth extending section 25b is attached to a surface of the second extending section 223b facing away from the shielding sheet 224, and a third clamping slot 25c is formed at a position of the fourth extending section 25b facing in the first direction X facing the first clamping slot 211b3 and the second clamping slot 224c, and the third clamping slot 25c is formed in a shape opposite to the first clamping slot 211b3 and the second clamping slot 211 c, and is far from the fourth extending section 25b along the second direction Y toward the fourth extending section 25 c. The first grounding bar 25 forms a notch 251 for exposing the corresponding complementary mating end 231 along the first direction X at a position opposite to the corresponding complementary mating end 231 of the differential signal pair, and a portion of the first grounding bar 25 opposite to the first through hole 2236 protrudes toward the ground contact 23b to form a series connection protrusion 252 contacting the ground contact 23 b. A second through hole 231b is formed at a portion of the ground contact 23b facing the first through hole 2236, and a third through hole 253 is formed at a position of the tandem protrusion 252 facing the second through hole 231 b; the surface of the shielding plate 224 opposite to the first through hole 2236, the second through hole 231b and the third through hole 253 is formed with a protruding column portion 224d protruding toward the first grounding bar 25, which penetrates into the first through hole 2236, the second through hole 231b and the third through hole 253 to be connected and matched with the protruding column portion.

In the illustrated embodiment, the second electrical connector 2000 may further be configured to include a second ground bar 26 connected in series with the corresponding first ground bar 25 and the shielding sheet 224 along the first direction X, and the second ground bar 26 may be configured to include a bus bar 261 distributed along the first direction X, a first tributary bar 262 led out from the bus bar 261, and a second tributary bar 263 led out from the bus bar 261, the first tributary bar 262 being connected to the shielding sheet 224 of one of the two adjacent lead frames and the first ground bar 25 of the other lead frame, and the second tributary bar 263 being connected to the first ground bar 25 and the shielding sheet 224 of the same lead frame.

In the embodiment shown, the length of the bus bar 261 in the third direction Z is adapted to the depth of the first, second and third clamping slits 211b3, 224c, 25c in the third direction Z, such that, when assembled, the corresponding surfaces of the bus bar 261 in the second direction Y are attached to the corresponding sides of the first, second and third clamping slits 211b3, 224c, 25c, the surfaces of the bus bar 261 facing in the plugging direction are attached to the bottom surfaces of the first, second and third clamping slits 211b3, 224c, 25c, and the length of the bus bar 261 in the second direction Y is adapted to the dimensions of the corresponding directions of the first, second and third clamping slits 211b3, 224c, 25c, such that the surface of the bus bar 261 in the second direction Y facing away from the main body section 25a is located on the same plane as the first, second and fourth end surfaces of the extension sections 211b2, 223b, 25 b. Each first branch bar 262 is located in a gap between every two adjacent lead frames, the first branch bar 262 is led out from a surface of the bus bar 261 facing the gap between the two lead frames toward the gap direction, and the first branch bar 262 is connected with the shielding piece 224 of the lead frame on the side along one side of the first direction X, and the other side is connected with the first grounding bar 25 of the adjacent other lead frame. The second branch 263 is led out from the bus 261 in the direction opposite to the sinking step 223c, the surface of the second branch 263 facing the plugging direction is attached to the table surface of the sinking step 223c, one side of the second branch 263 along the second direction Y is located on the inner side of the fourth outer peripheral wall 21d, the opposite other side is attached to the extending end surface of the second extending section 223b, and two sides of the second branch 263 along the first direction X are connected to the shielding pieces 224 and the first grounding strips 25 located outside two sides of the lead frame housing 223, specifically: the second branch 263 has one side connected to the corresponding side of the fourth extension 25b of the first grounding bar 25 attached to the same lead frame and the other side connected to the corresponding side of the third extension 224b of the shield 224 attached to the same lead frame.

In the illustrated embodiment, the second electrical connector 2000 may be further configured to include a right-angled securing member 27 attached to an end of each leadframe in the third direction Z that faces away from the corresponding complementary mating end 231, the right-angled securing member 27 having a first straight securing block 271 attached to an end of each leadframe that faces away from the corresponding mounting end 233 and a second straight securing block 272 attached to an end of each leadframe that faces away from the corresponding complementary mating end 231; a fourth slit 273 is formed on a portion of the first flat fixing block 271 facing each of the lead frame housings 223, and a fifth slit 274 is formed on a portion of the second flat fixing block 272 facing each of the lead frame housings 223; the portion of each leadframe housing 223 facing the fourth slit 273 and the portion facing the fifth slit 274 are formed with one-to-one corresponding convex strips.

The electric connector and the electric connector component adopt the structure shown in the embodiment mode, and at least the following functions and effects can be realized: the corresponding matching ends of the electrical contacts adopt the folding parts of the closed-loop structure, so that the stability of high-speed signal transmission is facilitated; a convex block part with a specific structure is designed at one end, close to the corresponding matching end, of the lead frame, and the convex block part is limited at one side, far away from the complementary matching end, of the corresponding matching end of the electric contact, so that when each electric contact is scraped and extruded by the complementary electric contact of the complementary electric connector, the convex block part can support the corresponding matching end to prevent the electric contact from being damaged due to excessive elastic deformation; the vertical distance between the second inflection point and the first extension section is larger than the vertical distance between the first contact part and the first extension section, and the horizontal distance between the second inflection point and the central axis is larger than the horizontal distance between the first inflection point and the central axis, so that the second inflection point and the first inflection point are not symmetrical, the offset of the second inflection point to the central axis is larger, the second inflection point has directivity, the direction can be conveniently identified during installation and plugging, the problems of installation errors, plugging errors and the like are prevented, the effect of protecting the electric contact is further achieved, and the service life of the electric contact is prolonged; the design of at least one elongated through hole at the corresponding mating end of the ground contact may improve the spring properties of the corresponding mating end, which may enable the electrical connector and the electrical connector assembly of the present invention to achieve data transmission rates of at least as high as 56 gigabits/second.

The foregoing examples only represent preferred embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. An electrical connector, comprising:

an electrically insulating housing;

a plurality of signal contacts supported by the electrically insulative housing and including a mating end and a mounting end, adjacent signal contacts forming differential signal pairs; wherein each of the plug-in mating ends includes a first extension section extending along a central axis and a folded-back portion extending from the first extension section; the folded back portion has a first inflection point protruding forward in the first direction from a first surface of the first extension section and a second inflection point protruding backward in the first direction from a second surface of the first extension section; a first contact portion is formed at the first inflection point, and a second contact portion is formed at the first surface of the first extension section; and

A ground contact is supported by the electrically insulative housing and includes a ground mating end and a corresponding ground mounting end.

2. The electrical connector of claim 1, wherein: the folding part comprises a second extending section extending from the first extending section and deviating from the central axis along the first direction in a forward direction, a folding section formed after being folded from the second extending section along the first direction in a reverse direction, and a folding section formed by extending from the folding section to the first extending section direction; the first inflection point is formed at the junction of the second extension section and the bending section, the second inflection point is formed at the junction of the bending section and the folding section, and the first contact portion is formed at a first surface of the first inflection point, which is far away from the second inflection point in a first direction.

3. The electrical connector of claim 2, wherein: the bending section is an arc bending section with one end in arc transition with the second extension section and the other end in arc transition with the retracing section; or alternatively

And one end of the bending section is in bending transition with the second extending section, and the other end of the bending section is in bending transition with the folding section.

4. The electrical connector of claim 2, wherein: the end of the folded-back section overlaps the second surface of the second extension section.

5. The electrical connector of claim 2, wherein: the vertical distance from the second inflection point to the first extension section is greater than the vertical distance from the first contact location to the first extension section; and the horizontal distance from the second inflection point to the central axis is greater than the horizontal distance from the first inflection point to the central axis.

6. The electrical connector of claim 2, wherein: the distance from the first contact part to the second inflection point is 0.5-0.95 mm; and/or

The distance from the first contact point to the end of the folded-back section is 3.05-5 mm.

7. The electrical connector of claim 1, wherein: the horizontal distance between the central axis of the plug-in matching end and the central axis of the mounting end is 0.1-0.5 mm.

8. The electrical connector of claim 1, wherein: when the plug-in mating end is in plug-in mating with a complementary mating end of a corresponding complementary signal contact, a central axis of the plug-in mating end is adjacent to the complementary mating end in a first direction, and a central axis of the mounting end is away from the complementary mating end in the first direction.

9. The electrical connector of claim 2, wherein: a convex hull protruding forward in the first direction is formed on the first surface of the second extension section.

10. The electrical connector of claim 9, wherein: when the signal contact is in plug-in fit with a corresponding complementary signal contact, the first contact part is abutted against the complementary fit end of the complementary signal contact and rides along the complementary fit end for a scraping distance until the first contact part of the signal contact is in contact with the second contact part of the complementary signal contact, and the second contact part of the signal contact is in contact with the first contact part of the complementary signal contact; the distance from the convex surface of the convex hull of the signal contact to the convex surface of the convex hull of the complementary signal contact is 0-0.2 mm.

11. The electrical connector of claim 2, wherein: when the signal contact is in plug-in fit with a corresponding complementary signal contact, the first contact part is abutted against the complementary fit end of the complementary signal contact and rides along the complementary fit end for a scraping distance until the first contact part of the signal contact is in contact with the second contact part of the complementary signal contact, and the second contact part of the signal contact is in contact with the first contact part of the complementary signal contact;

The vertical distance from the second inflection point of the signal contact to the second inflection point of the complementary signal contact is 2.5-4.5 mm; and/or the horizontal distance between the second inflection point of the signal contact and the second inflection point of the complementary signal contact is 0.7-2.0 mm.

12. The electrical connector of claim 11, wherein: the second contact part of the signal contact, a section of the first extension section from the second contact part to the second extension section, the first contact part and the second contact part of the complementary signal contact, and a section of the first extension section from the second contact part to the second extension section, the second extension section and the first contact part enclose to form a parallelogram space; the second extension section of the signal contact and the second extension section of the complementary signal contact form two long parallel sides of a parallelogram, and the first extension section of the signal contact and the first extension section of the complementary signal contact form two short parallel sides of the parallelogram.

13. The electrical connector of any one of claims 1 to 12, comprising: comprising at least one first leadframe and at least one second leadframe distributed along a first direction supported by an electrically insulating housing, the first leadframe and the oppositely disposed second leadframe forming a leadframe pair; the first lead frame and the second lead frame comprise a lead frame shell, a plurality of signal contacts and grounding contacts which are coated in the lead frame shell at intervals along a second direction, and a shielding part which is arranged on the lead frame shell and used for shielding signal interference between two adjacent lead frames, wherein corresponding matched ends of the signal contacts and the grounding contacts extend out of one end of the lead frame shell along the third direction, and corresponding mounting ends extend out of the other end of the lead frame shell along the third direction or a second direction or a first direction which forms a right angle with the third direction;

And a convex blocking part for abutting against the second surface of the corresponding matching end of the signal contact and the ground contact is formed at one end of the lead frame shell close to the corresponding matching end.

14. The electrical connector of claim 13, wherein: a first recess is formed on the first surface or the second surface of the lead frame shell along the first direction at a position corresponding to the ground contact, the first recess is distributed on the first surface or the second surface of the lead frame shell along the third direction, two ends of the first recess along the third direction penetrate through the first surface and the second surface of the lead frame shell along the first direction, so that two first penetrating end parts are formed, and the ground contact coated in the lead frame shell is at least partially exposed in the first recess;

the first surface or the second surface of the lead frame shell is provided with convex parts at positions corresponding to each pair of differential signal pairs, the second surface or the first surface of the shielding part is provided with concave parts which are matched with the convex parts in a mounting way at the positions corresponding to the convex parts, and two sides of the shielding part along the second direction are connected with the grounding contact exposed from the first concave parts.

15. The electrical connector of claim 13, wherein: the shielding part comprises a shielding sheet connected to the lead frame shell at a first surface or a second surface along a first direction; a first through hole penetrating along a first direction is formed at the position of the lead frame shell corresponding to each grounding contact, one surface, facing the shielding sheet, of the grounding contact in the first through hole is shielded by the shielding sheet, and one surface, facing away from the shielding sheet, is exposed outside through the first through hole; and a first grounding strip used for connecting a plurality of grounding contacts in series is formed on one surface of the lead frame shell, which is away from the shielding sheet along a first direction, and a part, opposite to the first through hole, of the first grounding strip protrudes towards the grounding contact to form a series connection convex part which is contacted with the grounding contact.

16. An electrical connector assembly comprising a first electrical connector and a second electrical connector that is complementary to the first electrical connector in a mating-to-mating relationship, the first electrical connector being the electrical connector of claim 14, the second electrical connector being the electrical connector of claim 15, a first contact portion of a signal contact of the first electrical connector abutting a complementary mating end of the complementary signal contact when the signal contact of the first electrical connector is mated with a corresponding complementary signal contact of the second electrical connector and riding along the complementary mating end a wiping distance across the wiping distance until the first contact portion of the signal contact contacts a second contact portion of the complementary signal contact, the second contact portion of the signal contact contacting the first contact portion of the complementary signal contact; the mounting ends of the electrical contacts of the first electrical connector are mounted on the first substrate, and the mounting ends of the electrical contacts of the second electrical connector are mounted on the second substrate.