CN220253547U - Electrical contact and electrical connector - Google Patents

Abstract

The utility model discloses an electrical contact and an electrical connector, which comprise a matching end and a mounting end, wherein the matching end is provided with a first surface and a second surface which face a first direction, and the matching end comprises a first extension section extending along a central axis, a second extension section positively deviating from the first extension section along the first direction, a bending section formed after being reversely bent along the first direction and a folding section; a first inflection point is formed at the junction of the second extension section and the bending section, a second inflection point is formed at the junction of the bending section and the folding section, a first contact part is formed on the first surface of the first inflection point, which faces forward in the first direction, and a second contact part is formed on the first surface of the first extension section, which faces forward in the first direction; the folded-back section has a broad face section and a narrow face section, a dimension of the broad face section in a second direction perpendicular to the first direction in a horizontal plane being larger than a dimension of the narrow face section in the second direction.

Description

Electrical contact and electrical connector

Technical Field

The utility model relates to an electrical contact and an electrical connector.

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 utility model aims to solve the technical problems that: provided are an electrical contact and an electrical connector capable of realizing high-speed transmission.

In order to solve the technical problems, the utility model adopts a technical scheme that: there is provided an electrical contact comprising a mating end and a mounting end, the mating end each having a first surface and a second surface facing in a first direction, the mating end each comprising a first extension section extending along a central axis, a second extension section extending from the first extension section and being offset in the first direction from the first extension section, a bent section formed after bending back in the first direction from the second extension section, and a folded-back section formed extending from the bent section in the direction of the first extension section; a first inflection point is formed at the junction of the second extension section and the bending section, a second inflection point is formed at the junction of the bending section and the folding section, a first contact part is formed on the first surface of the first inflection point, which faces forward in the first direction, and a second contact part is formed on the first surface of the first extension section, which faces forward in the first direction; the folded-back section has a broad face section and a narrow face section distributed in order from the mating end to the mounting end, and a dimension of the broad face section in a second direction perpendicular to the first direction on a horizontal plane is larger than a dimension of the narrow face section in the second direction.

In order to solve the technical problems, the utility model adopts another technical scheme that: an electrical connector is provided, comprising an electrically insulating housing having a mating abutment surface for abutting a complementary electrical connector when mated therewith and a mounting abutment surface for abutting a substrate when mounted therewith; and the plurality of electrical contacts are supported by the electrical insulation shell, the mating ends of the electrical contacts extend out of the plugging abutting surface of the electrical insulation shell, and the mounting ends extend out of the mounting abutting surface of the electrical insulation shell.

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 utility model.

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. 7a is an enlarged view of part a in fig. 7.

Fig. 8a is a perspective view of an electrical contact in a natural state.

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

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

Fig. 9a is an enlarged view of part B in fig. 9.

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

Fig. 11 is a schematic structural view of the second electrical connector of fig. 1.

Fig. 12 is a top perspective view of the outer housing of fig. 11.

Fig. 13 is an enlarged view of a portion C in fig. 12.

Fig. 14 is a top view of fig. 12.

Fig. 15 is a bottom view of fig. 11.

Fig. 16 is a distribution diagram of a plurality of lead frames in fig. 15.

Fig. 17 is a mating view of a pair of lead frames of a first electrical connector and a pair of lead frames of a second electrical connector.

Fig. 18 is an exploded view of one of the lead frames of fig. 16.

Fig. 19 is a schematic view in the opposite direction to fig. 18.

Fig. 20 is a schematic view of an assembly of a plurality of lead frames with right angle fixtures.

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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1, the electrical connector assembly of the present utility model 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 out of the first end of the electrically insulating housing in a third direction Z, and the other end of the plurality of electrical contacts extends out of the second end of the electrically insulating housing. The portions of the plurality of electrical contacts 13 of the first electrical connector 1000 extending out of the first end of the electrically insulating housing form respective mating ends 131 that are in a plug-fit with the complementary electrical contacts 23 of the second electrical connector 2000, and the portions of the plurality of electrical contacts 13 extending out of the second end of the electrically insulating housing form respective mounting ends 133 that are electrically connected 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 13 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 10, 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 located on two outer sides along the first direction X, respectively, 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, and 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, a 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, a 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 utility model.

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.

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 disposed in the corresponding covering cavity 111c, a portion of the leadframe housing 123 near the corresponding mating end 131 corresponding to a portion between each 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 the protrusion 1231 is capable of supporting the corresponding mating end 131 when the corresponding mating end 131 of each electrical contact 13 is scratched and pressed by the complementary electrical contact 23 of the complementary electrical connector, so as to prevent the electrical contact 13 from being damaged due to excessive elastic deformation. 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 (not shown) is formed between the surface of the linear array partition 1121 and the linear array partition 1121, opposite to the respective mating end 131 of each of the electrical contacts 13, and each of the electrical contacts 13 is pressed by the scraping force of the complementary electrical contact 23 to move toward the linear array partition 1121 without being damaged by the linear array partition 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 and the buried sections 132 of the signal contacts 13a and the ground contacts 13b 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 along the first direction X, the central axis C2 of the mating ends 131 may be located closer to the complementary mating end 231 along the first direction X (hereinafter, the direction along the first direction X toward/facing the complementary mating end 231 may be referred to as a first direction forward), and the central axis C1 of the mounting ends 133 may be located away from the complementary mating end 231 along the first direction X (hereinafter, the direction along the first direction X away from/facing the complementary mating end 231 may be referred to as a first direction reverse).

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 first surfaces 1301a, 1301b (1301 a, b) are forward facing the first direction X, and the second surfaces 1302a, 1302b (1302 a, b) are reverse facing the first direction X. 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 mating ends 131 of each of the signal contacts 13a and the ground contacts 13b (the mating ends 131a of the signal contacts 13a and the ground mating ends 131b of the ground contacts 13 b) each include a first extension section 1311 extending along the central axis C2 of the respective mating end 131 and a fold-back portion extending from the first extension section 1311. The first extension section 1311 is divided into a first straight section 13111 adjacent to the folded back portion (i.e., in a direction away from the corresponding mounting end 133), a second straight section 13112 adjacent to the corresponding mounting end 133 and abutting against the boss 1231, and a circular arc section 13113 located between the first and second straight sections 13111, 13112, with the apex of the circular arc section 13113 protruding in the first direction opposite to the second surfaces 1302a, b of the first and second straight sections 13111, 13112. Correspondingly, a section of the central axis C2 corresponding to the vertical first straight section 13111 is a first straight axis section C21, a section of the central axis C2 corresponding to the second straight section 13112 is a second straight axis section C22, and a section of the central axis C2 corresponding to the circular arc section 13113 is a circular arc axis section C23.

The folding part is in a closed loop structure, namely, the starting end and the tail end of the folding part are directly or indirectly connected through an intermediate piece to form a closed annular structure, a closed polygonal structure and the like. In one embodiment, the folded back portion may form a closed loop structure by: a groove 1318 is formed on the first extension section 1311 at the end corresponding to the folded back portion, the end of the folded back portion extends into and is connected to the groove 1318, the groove 1318 may extend through the first extension section 1311 in a direction opposite to the end of the folded back portion (i.e., reversely extend through the second surfaces 1302a, b of the first extension section 1311 in the first direction X), and the groove 1318 may also extend through the first surfaces 1301a, b and the second surfaces 1302a, b of the first extension section 1311 in the first direction X, thereby forming a through groove in the groove 1318. It should be noted that the connection of the end of the folded back portion to the groove 1318 means that the folded back portion is electrically connected to the groove 1318, including but not limited to a lap joint, a soldering, etc., so that the folded back portion and the first extension section 1311 can be electrically connected.

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 1313 is formed at the first surface of 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 (arc length) from the first contact point 1313 to the second inflection point 1315 is 0.3 to 2mm. The horizontal distance between the central axis C2 of the corresponding mating end 131 and the central axis C1 of the mounting end is 0.1-0.5 mm, and more specifically, the horizontal distance between the second straight axis segment C22 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 portion is formed with a through hole distributed along the central axis direction, and the through hole penetrates through the folded portion along the central axis C2 direction in a direction away from the corresponding mounting end 133. On the projection surface opposite to the first surface 1301a, b or the second surface 1301a, b of the folded portion, the opening is a U-shaped opening 1310 with an opening facing away from the direction of the corresponding mounting end 133, the bottom of the U-shaped opening 1310 is closer to the corresponding mounting end 133, and the opening is further away from the corresponding mounting end 133.

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 bending section 1314, the second inflection point 1315 is formed at the junction of the bending section 1314 and the folding section 1316, and specifically, the first contact portion 1313 is formed on the first surfaces 1301a, b of the first inflection point 1313 forward (facing the complementary mating end) toward the first direction X. The groove 1318 may also be optionally disposed at the second extension section 1312 or the first extension section 1311.

The second extension sections 1312 are each larger in dimension along the first direction X than the bending sections 1314. The second extension section 1312 has a cross-sectional length perpendicular to its extension direction that is greater than the cross-sectional lengths of the first inflection point 1313, the inflection section 1314, the second inflection point 1315, and the inflection section 1316 perpendicular to their respective extension directions when viewed in the Y-direction. Also when viewed in the Y-direction, the inflection section 1314 may be designed as an arcuate section having one end arcuate with respect to the second extension section 1312 and the other end arcuate with respect to 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 bending section 1314 has a second equal width section 13141 and a second variable length section 13142 connected between the second equal width section 13141 and the second extending section 1312, wherein a cross-sectional length of the second variable length section 13142 perpendicular to the extending direction thereof is gradually increased from the corresponding mating end 131 toward the corresponding mounting end 133 until being adapted to a cross-sectional length of the second extending section 1312 perpendicular to the extending direction thereof. In the illustrated embodiment, a cross-sectional length of the junction of the second transition 13142 and the second constant width section 13141 perpendicular to the extending direction thereof is defined to be 0.05 to 0.2mm. The second surface of the second transition 13142 facing the first direction X is defined as an inclined surface 13143 inclined in the direction opposite to the first direction X and toward the corresponding mounting end 133, and a vertical distance Z between the junction of the inclined surface 13143 and the second surface of the second transition 13141 and the second inflection point 1315 is defined as 0.2 to 2.2mm.

The distance (arc length) from the first contact point 1313 to the end of the folded back section 1316 is defined as 0.9 to 5mm. The folded-back section 1316 has a wide surface section 13161 and a narrow surface section 13162 which are distributed in this order from the second inflection point 1315 to the first extension section 1311, and the wide surface section 13161 has a larger dimension in the second direction Y than the narrow surface section 13162. The narrow surface segment 13162 has a first transition segment 131621 and a first uniform width segment 131622 sequentially distributed from the corresponding mating end 131 to the corresponding mounting end 133, and the first transition segment 131621 gradually decreases in size along the second direction Y from the wide surface segment 13161 to the first uniform width segment 131622 until the size of the first uniform width segment 131622 is adapted. A joint section 13163 is formed between the wide surface section 13161 and the first gradually-changing section 131621, two side surfaces of the joint section 13163 facing in the second direction Y are defined as arc surfaces 13164 extending in the direction of the first gradually-changing section 131621 and in the direction of the central axis C2, and arc tops of the two arc surfaces 13164 face opposite directions.

In the illustrated embodiment, the dimension (width) of the ground contact 13b in the second direction Y is greater than the dimension (width) of the signal contact 13a in the second direction Y. The wide section 13161 of the ground contact 13b is defined to be 0.9-1.5 mm in size in the second direction Y and the first equi-wide section 131622 is defined to be 0.2-0.8 mm in size in the second direction Y. The wide section 13161 of the signal contact 13a is defined to be 0.4 to 1.0mm in size in the second direction Y, and the first equi-wide section 131622 is defined to be 0.2 to 0.3mm in size in the second direction Y. The above-mentioned U-shaped through-hole 1310 is disposed at the folded-back portion of the ground contact 13b, the U-shaped through-hole 1310 having a first bottom 13101 located on the folded-back section 1316 and a second bottom 13102 located on the second extension section 1312; the U-shaped opening 1310 bisects at least a portion of the second extension section 1312, the bend section 1314, and at least a portion of the fold back section 1316 to form a first bend arm and a second bend arm on either side of the central axis. The U-shaped opening 1310 is defined to have a dimension in the second direction Y of 0.2-0.8 mm.

The dimensions of the second extension section 1312 and the bending section 1314 of the ground contact 13b may be the same in the second direction Y when viewed in the X-direction, or the dimension of the bending section 1314 in the second direction Y may be larger than the dimension of the second extension section 1312 in the second direction Y. The dimensions of the second extension sections 1312 and the bending sections 1314 of the signal contacts 13a in the second direction Y may be the same, or the dimensions of the bending sections 1314 in the second direction Y may be larger than the dimensions of the second extension sections 1312 in the second direction Y. In one embodiment as shown, the second extension sections 1312 and the bending sections 1314 of the ground contacts 13b may have the same dimension in the second direction Y, and the bending sections 1314 of the signal contacts 13a may have a dimension in the second direction Y that is greater than the dimension in the second direction Y of the second extension sections 1312.

After the plurality of electrical contacts 13 are assembled to the electrically insulating housing 11, the first contact location 1313 of each mating end 131 of the first linear array 141 is oppositely facing from the first contact location 1313 of each mating end 131 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 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.

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 1313 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, when the electrical contacts 13 are mated with the corresponding complementary electrical contacts 23 (i.e., the signal contacts 13a are mated with the complementary signal contacts and the ground contacts 13b are mated with the complementary ground contacts 23 b), the first contact portions 1313 of the respective mating ends 131 of the electrical contacts 13 abut the complementary mating ends 231 of the complementary electrical contacts 23 and ride along the complementary mating ends 231 a wiping distance until the first contact portions 1313 of the respective mating ends 131 are in contact with the second contact portions 1311a of the complementary mating ends 231 and the second contact portions 1311a of the respective mating ends 131 are in contact with the first contact portions 1313 of the complementary mating ends 231.

Referring to fig. 1 and 11, 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 plugging 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 form a group of two lead frame pairs, forming four lead frame pairs, wherein two lead frame pairs are respectively located at two outer sides along a first direction, the two outer lead frame pairs are defined as a first outer lead frame pair 22a and a second outer lead frame pair 22d, the other two lead frame pairs are located at the inner sides of the two outer lead frame pairs 22a, 22d along a first direction X, the two lead frame pairs 22b at the inner sides are defined as a first inner lead frame pair 22b and a second inner lead frame pair 22c, each lead frame pair, wherein one lead frame can be defined as a first lead frame 221, a plurality of electrical contacts 23 in the first lead frame 221 form a first linear array, and the other lead frame can be defined as a second lead frame 222, and a plurality of electrical contacts 23 in the second lead frame 222 form a second linear array. Column spacing channels are formed between the first lead frame 221 and the second lead frame 222 of each lead frame pair, and adjacent two lead frame pairs are separated by a partition wall distributed along the second direction Y. That is, the column spacing channels of the second electrical connector 2000 and the column spacing channels of the first electrical connector 1000 are offset in the first direction X, the column spacing channels of the second electrical connector 2000 are aligned with the dividing walls of the first electrical connector 1000, and the dividing walls of the second electrical connector 2000 are aligned with the column spacing channels of the first electrical connector 1000 to form a complementary relationship. In the illustrated embodiment, a first column spacing channel 201 is formed between the first lead frame 221 and the second lead frame 222 of the first outside lead frame pair 22a, a first column spacing channel 202 is formed between the first lead frame 221 and the second lead frame 222 of the first inside lead frame pair 22b, a third column spacing channel 203 is formed between the first lead frame 221 and the second lead frame 222 of the second inside lead frame pair 22c, and a fourth column spacing channel 204 is formed between the first lead frame 221 and the second lead frame 222 of the second outside lead frame pair 22 d. The first through fourth column spacing channels 201-204 are aligned with the first, third, fifth, and seventh column separation walls 112a, 112c, 112e, and 112g of the first electrical connector 1000 along the third direction Z upon mating for insertion of the first outer lead frame pair 12a, the first inner lead frame pair 12b, the second inner lead frame pair 12c, and the second outer lead frame pair 12d of the first electrical connector 1000 into the corresponding column spacing channels of the second electrical connector 2000, respectively.

Of the four pairs of lead frames, the first lead frame 221 of the first outer lead frame pair 22a is disposed adjacent to a first sidewall of the outer insulating housing facing the first direction X, and the second lead frame 222 of the second outer lead frame pair 22d is disposed adjacent to a second sidewall opposite the first sidewall; the second lead frame 222 of the first outer lead frame pair 22a and the first lead frame 221 of the first inner lead frame pair 22b, the second lead frame 222 of the first inner lead frame pair 22b and the first lead frame 221 of the second inner lead frame pair 22c, and the second lead frame 222 of the second inner lead frame pair 22c and the first lead frame 221 of the second outer lead frame pair 22d are separated by a partition wall.

When the second electrical connector 2000 is complementary to the first electrical connector 1000, the first column spacing channel 201 of the second electrical connector 2000 is inserted by the first outer lead frame pair 12a of the first electrical connector 1000, the second column spacing channel 202 of the second electrical connector 2000 is inserted by the first inner lead frame pair 12b of the first electrical connector 1000, the third column spacing channel 203 of the second electrical connector 2000 is inserted by the second inner lead frame pair 12c of the first electrical connector 1000, and the fourth column spacing channel 204 of the second electrical connector 2000 is inserted by 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 for insertion of the second lead frame 222 of the first outside lead frame pair 22a and the first lead frame 221 of the first inside lead frame pair 22b, the second column spacing channel 102 of the first electrical connector 1000 is for insertion of the second lead frame 222 of the first inside lead frame pair 22b and the first lead frame 221 of the second inside lead frame pair 22c, and the third column spacing channel 103 of the first electrical connector 1000 is for insertion of the second lead frame 222 of the second inside lead frame pair 22c and the first lead frame 221 of the second outside lead frame pair 22 d.

Referring to fig. 18, when the second electrical connector 2000 (e.g., female connector) is complementary to the first electrical connector 1000 (e.g., male connector), each leadframe pair of the second electrical connector 2000 is complementary to the leadframe pair of the first electrical connector 1000. The horizontal distance from the vertex of the circular arc segment of each electrical contact 23 of the first lead frame 221 of the lead frame pair of the second electrical connector 1000 to the vertex of the circular arc segment of each electrical contact 23 of the second lead frame 222 is 2.0-3.2 mm. It should be appreciated that in other embodiments, the roles of the second electrical connector 2000 and the first electrical connector 1000 may also be reversed, such as having the first electrical connector 1000 act as a complementary electrical connector for the second electrical connector 2000, such as defining the first electrical connector 1000 as a female connector, defining the second electrical connector 2000 as a male connector, and so on.

Referring to fig. 11 to 20, the side surface of the electrically insulating housing 21 facing 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 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 plurality of partition walls and an end surface of the plugging housing facing the plugging fitting direction form the plugging abutting surface 211e. In the embodiment shown, the plug housing comprises a first side wall 21a, a second side wall 21b, a third side wall 21c and a fourth side wall 21d connected to both the first side wall 21a and the second side wall 21b at an end remote from the third side wall 21 c. The first lead frame 221 of the first outer lead frame pair 22a is disposed adjacent to the first side wall 21a, and the second lead frame 222 of the second outer lead frame pair 22d is disposed adjacent to the second side wall 21 b. The first side wall 21a, the second side wall 21b, the third side wall 21c and the fourth side wall 21d enclose a rectangular frame structure, the space enclosed by the rectangular frame structure forms the plugging space 212a, and the plugging space 212a is communicated with the outside along the third direction Z.

The three partition walls may in turn be defined as a second column partition wall 212b, a fourth column partition wall 212d, and a sixth column partition wall 212f 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 column partition wall 212b for partitioning the second lead frame 222 of the first outside lead frame pair 22a and the first lead frame 221 of the first inside lead frame pair 22b, the fourth column partition wall 212d for partitioning the second lead frame 222 of the first inside lead frame pair 22b and the first lead frame 222 of the second inside lead frame pair 22c, and the sixth column partition wall 212f for partitioning the second lead frame 222 of the second inside lead frame pair 22c and the first lead frame 221 of the second outside 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 along the first direction X toward the corresponding electrical contact 23, the accommodating space 2124 forms a second recess along the third direction Z toward the second electrical connector 2000, and the accommodating space 2124 forms a third recess along the direction toward the covering portion 211, which communicates with the corresponding covering cavity. In the illustrated embodiment, the third contact partition wall 2125 for partitioning each electrical contact 23 is provided at the inner side walls of the first side peripheral wall 21a and the second side peripheral wall 21b with reference to the structure of the partition wall corresponding to the first lead frame 221 of the first outside lead frame pair 22a and the second outside lead frame 222 of the second outside lead frame pair 22d, and the inner side surfaces of the adjacent two third contact partition walls 2125 and the corresponding side peripheral walls are provided with accommodation spaces 2124 for accommodating the corresponding electrical contacts 23.

The cladding portion 211 includes an outer case and 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 for eight lead frames to be inserted therein in one-to-one correspondence. 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 utility model.

The outer case includes first, second and third side walls 21a1, 21b1 and 21c1 spaced apart and disposed in parallel along the first direction X. The first sidewall 21a1 is located on the same plane as the first sidewall 21a, and is formed on a side of the first sidewall 21a away from the first electrical connector 1000 along the third direction Z. The second side wall 21b1 is located on the same plane as the second side wall 21b, and is formed on a side of the second side wall away from the first electrical connector 1000 along the third direction Z. The third side wall 21c1 is located on the same plane as the third side wall 21c, and is formed on a side of the third side wall 21c away from the first electrical connector 1000 along the third direction Z. The enclosing structure of the first side wall 21a1, the second side wall 21b1 and the third side wall 21c1 makes the outer housing of the covering portion 211 form openings along the third direction Z at an end far from the first electrical connector 1000 in the plug-fit manner and along the second direction Y at an end far from the third side wall 21c1.

One side of each of the seven inner partition walls 211b, which is close to the third side wall 21c1 in the second direction Y, is connected to the third side wall 21c1, and the other side thereof extends away from the third side wall 21c1 in the second direction Y. Of the seven inner partition walls 211b, a first inner partition wall 211b is located at a position between the first side wall 21a and the second row partition wall 212b in the first direction X, a second inner partition wall 211b is formed at a position between the fourth row partition wall 212d and the first electric connector 1000 in the third direction Z on a side of the second row partition wall 212b remote from the first electric connector 1000, a third inner partition wall 211b is located at a position between the second row partition wall 212b and the fourth row partition wall 212d in the first direction X, a fourth inner partition wall 211b is formed at a position between the fourth row partition wall 212d and the sixth row partition wall 212f in the third direction Z on a side of the sixth row partition wall 212f remote from the first electric connector 1000, and a fifth inner partition wall 211b is located at a position between the first row partition wall 211b and the sixth row partition wall 212f in the third direction X.

Each of the seven inner partition walls 211b includes a lateral wall 211b1 extending between the third side wall 21c and the fourth side wall 21d along the second direction Y, and a vertical wall 211b2 extending from the lateral wall 211b1 along the third direction Z away from the first electrical connector 1000. The lateral wall 211b1 is connected to the third side wall 21c on a side close to the third side wall 21c in the second direction Y, and is connected to the fourth side wall 21d on a side away from the third side wall 21 c. The length of the vertical wall 211b2 along the second direction Y is much smaller than the length of the transverse wall 211b1 along the corresponding direction, and the vertical wall 211b2 is connected to the third side wall 21c along the second direction Y. The first vertical walls 211b2 and the first side walls 21a1, the adjacent two vertical walls 211b2, and the seventh inner partition wall 211b and the second side walls 21b1 form cartridge cavities 211d (eight cartridge cavities 211d in this embodiment) distributed along the third direction Z, and a first bearing table 211d1 is disposed at one end of each cartridge cavity 211d, which is close to the mating portion 212 along the third direction Z, for supporting a bottom of one side of the lead frame. Correspondingly, a second bearing table 21d1 is further disposed on the inner side surface of the fourth side wall 21d, for supporting the bottom of the other side of the lead frame.

Each vertical wall 211b2 protrudes along the first direction X to form a directional insert 211d2, one end of the directional insert 211d2, which is close to the first bearing platform 211d1, is connected with the directional insert 211d2, one end, which is far away from the first bearing platform 211d1 along the third direction Z, is flush with the vertical wall 211b2, the directional insert 211d2 does not block the insert cavity 211d along the first direction X, that is, a cavity wall, which is opposite to the insert cavity 211d, of the directional insert 211d2 is not connected together, and the directional insert 211d2 and the opposite cavity wall form a through opening, which is penetrated along the second direction Y. The length of the orientation tab 211d2 along the second direction Y is gradually reduced along the protruding direction, for example, the orientation tab 211d2 may be designed to have a trapezoid, a taper, or the like with a small end facing the protruding direction, and for example, the orientation tab 211d2 may be designed to be an isometric fit section 211d21 with a length not gradually reduced along the protruding direction along the second direction Y and a quick insert section 211d22 with a length gradually reduced along the protruding direction along the second direction Y, so as to facilitate its insertion into the orientation slot 22301 of the corresponding lead frame along the first direction X. The directional insert 211d2 can realize rapid guiding and positioning of the lead frame, facilitates the lead frame to be inserted into the cladding cavity and plays a role in positioning the lead frame.

Each of the lead frames (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 that are wrapped in the lead frame housing 223 at intervals along the second direction Y, and a shielding sheet 224 that is provided on the lead frame housing 223 for shielding signal interference between differential signal pairs in two adjacent lead frames, respective complementary mating ends 231 of the plurality of signal contacts 23a and ground contacts 23b extend out of one end of the lead frame housing 223 along the third direction Z so as to be located in the respective accommodation space 2124, and a third gap is formed between a surface of each of the electrical contacts 23 facing the line array partition wall 2121 and the line array partition wall 2121, each of the electrical contacts 23 is pressed against the respective complementary mating end 2121 of the line array partition wall 2121 by a scraping force of the corresponding electrical contact 13 when being in plug-in engagement with the corresponding electrical contact 13 of the first electrical connector, and is not damaged by the respective complementary mating end 231 of 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. A plurality of the signal contacts 23a and ground contacts 23b are located between the leadframe housing 223 and the shield blades 224.

The lead frame housing 223 is located in the corresponding cladding cavity, one side of the lead frame housing 223, along the third direction Z, close to the second bearing table 21d1 is supported on the second bearing table 21d1, one side of the lead frame housing 223, along the second direction Y, close to the inserting cavity 211d is provided with an inserting portion 2230 inserted into the inserting cavity 211d along the inserting matching direction, one side of the inserting portion 2230, along the third direction Z, close to the first bearing table 211d1 is supported on the first bearing table 211d1, a position, corresponding to the orientation inserting piece 211d2, on the inserting portion 2230 is provided with an orientation slot 22301 in concave-convex fit with the orientation inserting slot 2232, and the cross section of the orientation slot 22301 is trapezoidal, and the width of the slot bottom is smaller than the width of the slot bottom. The side of the plugging portion 2230 away from the first electrical connector 1000 along the third direction Z is provided with a protruding rib 22302 disposed outside the plugging cavity 211d and having a size larger than the corresponding size of the plugging cavity 211d in at least the X or Y direction.

The 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 side of the corresponding complementary mating end 231 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 scraped and pressed by the corresponding electrical contact 13 of the first electrical connector, so as to prevent loosening, deformation, etc. of the electrical contact 23. In the illustrated embodiment, an end of the leadframe housing 223 adjacent to the mating end protrudes into the mating space 212a in the third direction Z, and a portion protruding into the mating space 212a may be defined as a first protruding section 223a, and a plurality of first rivet holes 223d are spaced apart from the first protruding section 223a in the second direction Y. The first protruding section 223a further extends along the second direction Y toward the fourth side surrounding wall 21d and closes the fourth side surrounding wall 21d, thereby forming a first extending section 223b, one end of the first extending section 223b away from the first protruding section 223a is formed with a sinking step 223c, and the sinking step 223c is used for being placed on the second bearing table 21d1 when the lead frame is assembled in the cladding cavity.

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 2313 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 2313 of the electrical contacts 23 of the second linear array on a second side of the linear array divider are oppositely oriented. 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 first protruding section 223a facing the mating direction, wherein at least one electrical contact 23 is spaced apart at an end of the first 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 end of the shielding plate 224 near the complementary mating end 231 protrudes into the plugging space 212a along the third direction Z, and the portion protruding into the plugging space 212a may be defined as a second protruding section 224a, where the protruding distance of the second protruding section 224a matches the protruding distance of the first protruding section 223a, and a plurality of second riveting holes 224d are spaced apart on the second protruding section 224a along the second direction Y. The second protruding section 224a also extends in the second direction Y toward the fourth side peripheral wall 21d and closes the fourth side peripheral wall 21d, thereby forming a second extending section 224b, and the second extending section 224b is placed on the second loading table 21d 1.

The surface of the shielding plate 224 opposite to the ground contact 23b is formed with a matching rib 2242, the rib 2242 is formed with a plurality of rib segments distributed at intervals along the length direction of the ground contact 23b, and the shielding plate 224 further includes a second clamping hole 2243 formed through the surface thereof. 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 slit 2232 is formed by a plurality of first slit segments spaced apart along the length of the ground contact 23 b. The surface of the lead frame case 223 facing the shielding plate 224 includes second card protrusions 2233 in one-to-one correspondence with the second card holes 2243. The shielding piece 224 is integrally connected with the lead frame housing 223 by the second click hole 2243 and the second click protrusion 2233.

The lead frame housing 223 is formed with a grounding strip 25 for connecting a plurality of grounding contacts 23b in series on a surface facing away from the shielding sheet 224 along the first direction X, in the illustrated embodiment, the grounding strip 25 is attached to a surface facing away from the shielding sheet 224 at the first protruding section 223a, the grounding strip 25 has a main body section 25a attached to a surface facing away from the shielding sheet 224 on the first protruding section 223a, and a third extension section 25b formed by extending from the main body section 25a along the second direction Y toward the fourth side enclosure wall 21d, and the third extension section 25b is attached to a surface facing away from the shielding sheet 224 on the first extension section 223 b. A notch 251 for exposing the corresponding complementary mating end 231 along the first direction X is formed at a position where the grounding bar 25 faces the corresponding complementary mating end 231 of the differential signal pair, and a third riveting hole 253 is formed on the grounding bar 25 at a position facing the first riveting hole 223 d; the ground contact 23b is formed with a through hole 231b at a portion facing the second rivet hole 224 d. When the shield plate 224, the lead frame case 223, and the ground bar 25 are riveted together, the rivet is sequentially inserted through the second rivet hole 22, the first rivet hole 223d, and the third rivet hole 253 to rivet.

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 contact, the electric connector and the electric connector assembly adopt the structure shown in the embodiment, and at least the following functions and effects can be realized: the folding section adopts a wide-face section and a narrow-face section structure, a connecting section is arranged between the wide-face section and the narrow-face section, two side faces of the connecting section are arc faces (C angles), and the tail end width is 0.2-0.8 mm, so that the electric connector assembly can realize data transmission rate of at least 56 gigabits/second; the broad-side sections of the signal contacts are sized in the second direction to be between 0.4 mm and 1.0mm to enable the electrical connector assembly to achieve data transmission rates of at least up to 56 gigabits/second; thirdly, designing the bending section into a second equal-width section and a second gradual change section, wherein the dimension of the contact part of the second gradual change section and the second equal-width section along the first direction is limited to be 0.05-0.2 mm, so that the supporting design between the distal end part of the bent terminal head and the terminal main body is facilitated, and the overall stability is enhanced; the corresponding matching ends of the electrical contacts are matched with the trough body which is arranged in a penetrating way by adopting the tail ends of the folding parts, so that the folding parts of a closed loop structure are formed, signals can form a self-return path, the crosstalk between opposite signal terminals is reduced, and part of radiation energy is changed into return energy, so that the transmission of high-speed signals is facilitated; (V) as the corresponding matching ends of the electrical contacts adopt the folding parts of the closed-loop structure, the positive force of the electrical contacts is increased; after the male and female are plugged, the terminal is not easy to fatigue; and (six) enabling the vertical distance between the second inflection point and the first extension section to be larger than the vertical distance between the first contact part and the first extension section, enabling the horizontal distance between the second inflection point and the central axis to be larger than the horizontal distance between the first inflection point and the central axis, enabling the second inflection point and the first inflection point not to have symmetry, enabling the offset of the second inflection point to offset the central axis to be larger, enabling the second inflection point to have directivity, facilitating the recognition of directions during installation and insertion, preventing the problems of installation errors, insertion errors and the like, further playing a role in protecting the electrical contact, and prolonging the service life of the electrical contact.

The foregoing examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. 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 utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. An electrical contact comprising a mating end and a mounting end, the mating end each having a first surface and a second surface facing in a first direction, the mating end each comprising a first extension section extending along a central axis, a second extension section extending from the first extension section and being offset in the first direction, a bent section formed after bending back in the first direction from the second extension section, and a folded back section formed extending from the bent section in the direction of the first extension section; a first inflection point is formed at the junction of the second extension section and the bending section, a second inflection point is formed at the junction of the bending section and the folding section, a first contact part is formed on the first surface of the first inflection point, which faces forward in the first direction, and a second contact part is formed on the first surface of the first extension section, which faces forward in the first direction; the method is characterized in that: the folded-back section has a broad face section and a narrow face section distributed in order from the mating end to the mounting end, and a dimension of the broad face section in a second direction perpendicular to the first direction on a horizontal plane is larger than a dimension of the narrow face section in the second direction.

2. The electrical contact of claim 1, wherein: the narrow surface section is provided with a first gradual change section and a first equal-width section which are distributed in sequence from the matching end to the mounting end, and the size of the first gradual change section along the second direction is gradually reduced from the wide surface section to the first equal-width section until the size of the first gradual change section is matched with the size of the first equal-width section.

3. The electrical contact of claim 2, wherein: and a connecting section is formed between the wide surface section and the first gradual change section, two side surfaces facing the second direction on the connecting section are limited to be arc surfaces extending towards the first gradual change section and towards the central axis, and the arc tops of the two arc surfaces face opposite directions.

4. The electrical contact of claim 1, wherein: the distance from the first inflection point to the second inflection point is 0.3-2 mm; and/or

The distance from the first contact point to the end of the folded-back section is 0.9 to 5mm.

5. The electrical contact of claim 1, wherein: the second extension sections each have a dimension in the first direction that is greater than a dimension in the first direction of the bending sections.

6. The electrical contact of claim 5, wherein: the bending section is provided with a second equal width section and a second gradual change section connected between the second equal width section and the second extension section, and the size of the second gradual change section along the first direction gradually increases from the matching end to the mounting end until the second gradual change section is matched with the size of the second extension section along the first direction;

The dimension of the contact point of the second transition section and the second equal width section along the first direction is defined as 0.05-0.2 mm.

7. The electrical contact of claim 6, wherein: the second surface of the second graded segment facing the first direction is defined as an inclined surface inclined in the direction opposite to the first direction and facing the mounting end, and the vertical distance between the junction of the inclined surface and the second surface of the second graded segment and the second inflection point is defined as 0.2-2.2 mm.

8. The electrical contact of claim 1, wherein: the contact assembly comprises a signal contact and a ground contact, wherein the dimension of the wide section of the signal contact along a second direction is defined as 0.4-1.0 mm, and the dimension of the first equal-width section along the second direction is defined as 0.2-0.3 mm; the wide section of the ground contact is defined to have a dimension in a second direction of 0.9-1.5 mm and the first constant width section is defined to have a dimension in the second direction of 0.2-0.8 mm.

9. The electrical contact of claim 8, wherein: the grounding contact is provided with a U-shaped through opening which is distributed on one end of the matching end far away from the mounting end along the central axis direction, the opening of the U-shaped through opening penetrates through the matching end along the central axis direction far away from the mounting end direction, and the U-shaped through opening is provided with a first bottom positioned on the folding section and a second bottom positioned on the second extension section;

The U-shaped opening bisects at least a portion of the second extension section, the bending section, and at least a portion of the return section to form a first bending arm and a second bending arm on opposite sides of the central axis.

10. An electrical connector, characterized in that: comprises an electric insulation shell, a first connecting piece and a second connecting piece, wherein the electric insulation shell is provided with a plugging abutting surface abutting against the complementary electric connector when being in plug-in fit with the complementary electric connector and a mounting abutting surface abutting against the substrate when being mounted; and

a plurality of electrical contacts according to any one of claims 1 to 9 supported by an electrically insulating housing, the mating ends of the electrical contacts extending beyond the mating abutment surface of the electrically insulating housing, and the mounting ends extending beyond the mounting abutment surface of the electrically insulating housing.