Electrical connector and electrical connector assembly

Abstract

The application discloses an electric connector and an electric connector assembly, the electric connector comprises an electrically insulating housing; a plurality of signal contacts supported by the electrically insulating housing and comprising a plug-in mating end and a mounting end, adjacent signal contacts forming a differential signal pair; wherein each of the plug-in mating end comprises a first extension section extending along a central axis and a return portion formed from the first extension section; the return portion has a first inflection point positively projecting the first surface of the first extension section along the first direction and a second inflection point negatively projecting the second surface of the first extension section along the first direction; a first contact site is formed at the first inflection point, and a second contact site is formed at the first surface of the first extension section; and a ground contact supported by the electrically insulating housing and comprising 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

TECHNICAL FIELD

[0001] The present application relates to an electrical connector and an electrical connector assembly. BACKGROUND

[0002] US Patent Publication No. 2011 / 0009011 discloses an electrical connector having edge-coupled differential signal pairs capable of operating at 13 GHz (near 26 gigabits / second) with acceptable crosstalk levels. As technology continues to advance, electrical connector manufacturers provide scalable cost-effective solutions, and electrical connectors are designed with individually shielded wide-side-to-wide-side differential signal pairs (twinax) to provide data transfer rates up to 40 gigabits / second. However, even 40 gigabits / second data transfer rates are increasingly unable to meet today's demands, and thus there is a need to develop electrical connectors with even higher speeds. SUMMARY

[0003] In view of the above, the present application is to solve the technical problems of the prior art, and to provide an electrical connector and an electrical connector assembly with high speed.

[0004] To solve the above technical problems, one technical solution adopted by the present application is to provide an electrical connector, comprising: an electrically insulating housing; a plurality of signal contacts supported by the electrically insulating housing and comprising a mating end and a mounting end, adjacent signal contacts forming a differential signal pair; wherein each of the mating ends comprises a first extension section extending along a central axis and a return portion extending from the first extension section; the return portion has a first inflection point positively projecting the first surface of the first extension section in the first direction and a second inflection point negatively projecting the second surface of the first extension section in the first direction; a first contact site is formed at the first inflection point, and a second contact site is formed at the first surface of the first extension section; and a ground contact supported by the electrically insulating housing and comprising a ground mating end and a corresponding ground mounting end.

[0005] To solve the above technical problems, the application adopts another technical solution: providing an electrical connector assembly, comprising a first electrical connector and a second electrical connector which is a complementary type of the first electrical connector and is mutually plugged with the first electrical connector, when the signal contact of the first electrical connector is plugged with the corresponding complementary signal contact of the second electrical connector, the first contact part of the signal contact abuts against the complementary mating end of the complementary signal contact and travels along the complementary mating end for a scraping distance until the first contact part of the signal contact contacts the second contact part of the complementary signal contact, the second contact part of the signal contact contacts the first contact part of the complementary signal contact; the mounting end of each electrical contact of the first electrical connector is mounted on a first substrate, and the mounting end of each electrical contact of the second electrical connector is mounted on a second substrate.

[0006] The electrical connector and the electrical connector assembly have the following beneficial effects: (1) the corresponding mating end of each electrical contact adopts the folded-back part of the closed-loop structure, which is beneficial to the stability of high-speed signal transmission; (2) the one end of the lead frame close to the corresponding mating end is designed as the convex blocking part with a specific structure, which is limited to the side of the corresponding mating end of the electrical contact away from the complementary mating end, so that when each electrical contact is scraped and extruded by the complementary electrical contact of the complementary electrical connector, the convex blocking part can support the corresponding mating end to prevent the electrical contact from being damaged due to excessive elastic deformation; (3) the vertical distance between the second inflection point and the first extension section is greater 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 center axis is greater than the horizontal distance between the first inflection point and the center axis, so that the second inflection point and the first inflection point are not symmetrical, the second inflection point is more offset from the center axis, the second inflection point has directionality, which is convenient for identifying the direction during installation and plugging, prevents installation and plugging errors, and further plays a role in protecting the electrical contact and prolonging the service life of the electrical contact; (4) the corresponding mating end of the ground contact is designed as at least one long-shaped through hole, which can improve the elastic performance of the corresponding mating end, so that the electrical connector and the electrical connector assembly can realize a data transmission rate of at least 56 gigabits per second. BRIEF DESCRIPTION OF DRAWINGS

[0007] 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 serve to explain the application without imposing undue limitation on the application. In the drawings:

[0008] Figure 1 is a structural schematic diagram of an embodiment of the electrical connector assembly of the application.

[0009] Figure 2a and Figure 2b is Figure 1Structure diagram of the first electrical connector.

[0010] Figure 3 is Figure 1 Top view of the first electrical connector.

[0011] Figure 4 is Figure 3 Distribution diagram of the plurality of leadframes.

[0012] Figure 5 is Figure 4 Split diagram of one of the leadframes.

[0013] Figure 6 is Figure 5 Diagram in the opposite direction.

[0014] Figure 7 is Figure 5 Distribution diagram of a pair of differential signal pairs and ground contacts.

[0015] Figure 8 is a side view of the electrical contact in a natural state.

[0016] Figure 9 is Figure 8 a side view of the mating end of the electrical contact in the first electrical connector.

[0017] Figure 10 is a plug-in state diagram of the electrical contact and the mating end and the complementary mating end of the complementary electrical contact in one embodiment.

[0018] Figure 11 is a plug-in state diagram of the electrical contact and the mating end and the complementary mating end of the complementary electrical contact in one embodiment.

[0019] Figure 12 is a plug-in state diagram of the electrical contact and the mating end and the complementary mating end of the complementary electrical contact in one embodiment.

[0020] Figure 13 is Figure 1 Structure diagram of the second electrical connector.

[0021] Figure 14 is Figure 13 Top perspective view of the outer housing.

[0022] Figure 15 is Figure 14 Bottom view of the first electrical connector.

[0023] Figure 16 is Figure 15 Sectional view of A-A in the first electrical connector.

[0024] Figure 17 is Figure 13is a bottom view.

[0025] Figure 18 is Figure 17 is a plot of the distribution of the plurality of lead frames in the array.

[0026] Figure 19 is Figure 18 is a split view of one of the lead frames in the array.

[0027] Figure 20 is Figure 19 is a schematic view in the opposite direction.

[0028] Figure 21 is Figure 18 is a perspective view from another angle.

[0029] Figure 22 is Figure 18 is a perspective view from another angle. DETAILED DESCRIPTION

[0030] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below with reference to the embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0031] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being “connected” to another element, it can be directly connected to the other element or intervening elements can be present.

[0032] Unless otherwise defined, 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 application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0033] Reference will now be made to Figure 1The electrical connector assembly includes a first electrical connector 1000 and a second electrical connector 2000 as a complementary mating counterpart of the first electrical connector 1000. The mounting end of the first electrical connector 1000 is electrically connected with a first substrate (not shown), the mating end of the first electrical connector 1000 is mated with a complementary mating end of the second electrical connector 2000, the mounting end of the second electrical connector 2000 is electrically connected with a second substrate (not shown), and the first and second substrates can be printed circuit boards, backplanes, etc. The first electrical connector 1000 and the second electrical connector 2000 are mated along a third direction, which can be referred to as a mating direction, and according to the embodiment shown in the drawings, the third direction is defined as a vertical direction Z. The first electrical connector 1000 and the second electrical connector 2000 can be identical or similar in structure or function, and each includes 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 a first end of the electrically insulating housing along the third direction Z, and the other end of the plurality of electrical contacts extends out of a second end of the electrically insulating housing, the portion of the plurality of electrical contacts extending out of the first end of the electrically insulating housing forms respective mating ends 131 for mating with complementary electrical contacts 23, and the portion of the plurality of electrical contacts extending out of the second end of the electrically insulating housing forms respective mounting ends 133 for electrically connecting with respective substrates. The first electrical connector 1000 can be a vertical electrical connector, i.e., an electrical connector in a linear type along the mating direction, and the respective mating ends 131 and the respective mounting ends 133 of the plurality of electrical contacts of the vertical electrical connector extend out of two opposite first and second ends of the electrically insulating housing, respectively. The first electrical connector 1000 can also be a right-angle electrical connector, and the respective mating ends 131 of the plurality of electrical contacts of the right-angle electrical connector extend out of the first end of the electrically insulating housing along the third direction Z, and the respective mounting ends 133 extend out of the second end of the electrically insulating housing perpendicular to the first end along a direction at a right angle to the third direction Z. According to the embodiment shown in the drawings, the first electrical connector 1000 is described in detail as a vertical electrical connector, and the second electrical connector 2000 is described in detail as a right-angle electrical connector, respectively.

[0034] Please refer to FIGS. 2 to Figure 12The first electrical connector 1000 includes an electrically insulating housing 11 and a plurality of lead frames arranged along a first direction X on the electrically insulating housing 11, each of the lead frames is arranged along a second direction Y which is perpendicular to the first direction X in a horizontal plane, a plurality of electrical contacts 13 are arranged along the second direction Y on each of the lead frames, a first gap J11 is formed between two adjacent electrical contacts 13, the plurality of electrical contacts 13 in each of the lead frames includes a plurality of signal contacts 13a and at least one ground contact 13b, two adjacent signal contacts 13a form a differential signal pair, a second gap J12 is formed between each adjacent differential signal pair, the ground contact 13b is arranged in the second gap J12 between each adjacent differential signal pair. The plurality of signal contacts 13a and ground contacts 13b can be arranged in a distribution such as "G-S-S, S-G-S, S-S-G", S represents a signal, and G represents a ground, the plurality of electrical contacts 13 (including signal contacts 13a and ground contacts 13b) arranged along the second direction Y in a line form a linear array, i.e. the plurality of signal contacts 13a and ground contacts 13b in each of the lead frames form a linear array. Each of the signal contacts 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, the mating end 131 and the mounting end 133 of the vertical electrical contacts 13 are arranged at two ends of the electrically insulating housing 11 along the Z direction. In the embodiment shown, the first direction X is defined as a horizontal or row direction, and the second direction Y is defined as a vertical or column direction, therefore, the plurality of lead frames are arranged along the row direction, and each of the lead frames extends along the column direction. The plurality of lead frames can be defined as eight lead frames, but it should be noted that the number of lead frames can be set according to specific use requirements, but mainly even-numbered lead frames are mainly used. The eight lead frames form two pairs of opposite lead frame pairs 12, forming four pairs of lead frame pairs 12, two of which are located at the two outer sides along the first direction X, the two outer lead frame pairs 12 are 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 are located at the inner side between the two outer lead frame pairs along the first direction X, the two inner lead frame pairs 12 are defined as a first inner lead frame pair 12b and a second inner lead frame pair 12c, one of the lead frame pairs 12 is defined as a first lead frame 121, the plurality of electrical contacts 13 in the first lead frame 121 form a first linear array 141, and the other lead frame is defined as a second lead frame 122, the plurality of electrical contacts 13 in the second lead frame 122 form a second linear array 142.The first lead frame 121 and the second lead frame 122 are separated by the partition walls distributed along the second direction Y, that is, the first linear array 141 and the second linear array 142 are respectively located on two sides of the partition walls along the first direction X. Adjacent two lead frame pairs 12 form an inter-column spacing channel, the first outer lead frame pair 12a and the first inner lead frame pair 12b form a first inter-column spacing channel 101, the first inner lead frame pair 12b and the second inner lead frame pair 12c form a second inter-column spacing channel 102, and the second inner lead frame pair 12c and the second outer lead frame pair 12d form a third inter-column spacing channel 103. 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 can be directly supported on the electrically insulating housing 11 in the form of a linear array, and the number of lead frames, the distribution manner, and the like can be adaptively changed, and are not limited to the limitations of the illustrated embodiments.

[0035] The electrically insulating housing 11 includes a cladding portion 111 and a plug-in portion 112 arranged along a third direction Z. In the illustrated embodiment, the cladding portion 111 includes an outer housing enclosed by a first side wall 11a and a second side wall 11b spaced apart and arranged parallel along the first direction X, a third side wall 11c and a fourth side wall 11d spaced apart and arranged parallel along the second direction Y, and seven inner partition walls formed in an inner cavity 111a of the outer housing. The seven inner partition walls are uniformly spaced apart along the first direction X in the inner cavity 111a of the outer housing, and the two end faces of the seven inner partition walls along the third direction Z are flush with the corresponding two end faces of the first to fourth side walls 11a-11d. The seven inner partition walls divide the inner cavity 111a into eight cladding cavities 111c. At least one inner cavity wall, at most all inner cavity walls, of each cladding cavity 111c protrudes inwardly with a plurality of ribs 111d. The length of each rib 111d along the third direction Z can be adapted to the length of the cladding cavity 111c in the corresponding direction. Each rib 111d can abut against the two end faces of the lead frame housing 123 corresponding to each lead frame housing 123 along the first direction X, thereby achieving the function of clamping the lead frame housing 123. The first end face (upper end face in the illustration) and the second end face (lower end face in the illustration) of the cladding portion 111 (including the outer housing and the inner partition walls) along the third direction Z can be respectively defined as the plug-in abutting face 111e when the complementary second electrical connector 2000 is plug-in matched, and the mounting abutting face 111f when the first substrate is mounted. It should be understood that the number words seven, eight, and the like in the embodiment are exemplified by adapting to the eight lead frames, and are not used as a limitation of the electrical connector of the present application.

[0036] The plug-in fitting part 112 comprises a plurality of the partition walls, for example four partition walls, which are arranged at the first end of the outer housing body along the first direction X, each of which extends along the second direction Y and has a length adapted to the length of each of the cover cavities 111c, and each of which extends along the third direction Z and has a height determined according to the structure of the corresponding fitting end 131 of the electrical contact 13. In the shown embodiment, the four partition walls are erected on the first end face of the first, third, fifth and seventh inner partition walls one by one and can be integrally formed with them, and therefore the four partition walls can be defined as the first column of partition walls 112a, the third column of partition walls 112c, the fifth column of partition walls 112e and the seventh column of partition walls 112g. The first column of partition walls 112a is used to separate 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 located on the two sides of the first column of partition walls 112a respectively; the third column of partition walls 112c is used to separate 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 located on the two sides of the third column of partition walls 112c respectively; the fifth column of partition walls 112e is used to separate 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 located on the two sides of the fifth column of partition walls 112e respectively; and the seventh column of partition walls 112g is used to separate the second outer lead frame pair 12d, so that the first lead frame 121 and the second lead frame 122 of the second outer lead frame pair 12d are located on the two sides of the seventh column of partition walls 112g respectively.

[0037] Each of the column partition walls 112a-112g includes a line array partition wall 1121 formed between the first and second lead frames 121 and 122 for partitioning the first and second line arrays 141 and 142, a first contact partition wall 1122 formed on a first surface of the line array partition wall 1121 for partitioning each electrical contact 13, and a second contact partition wall 1123 formed on a second surface of the line array partition wall 1121 for partitioning each electrical contact 13. The first contact partition walls 1122 are a plurality of first contact partition walls 1122 corresponding in number to the number of electrical contacts 13 of the first line array 141, which are spaced apart on the first surface of the line array partition wall 1121 in the second direction Y and each extend in the first direction X toward a first gap J11 between two adjacent electrical contacts 13, i.e., between two adjacent signal contacts 13a, between an adjacent signal contact 13a and a ground contact 13b in the first line array 141. The second contact partition walls 1123 are similar in number and position to the first contact partition walls 1122 and will not be described again. Between two adjacent contact partition walls (two adjacent first contact partition walls 1122, two adjacent second contact partition walls 1123) and the line array partition wall 1121 is enclosed a receiving space 1124 for receiving the corresponding electrical contact 13, which forms a first notch 1124a toward the corresponding electrical contact 13, a second notch 1124b toward the second connector 2000, and a third notch 1124c toward the covering portion 111 and in communication with the corresponding covering cavity 111c. In the illustrated embodiment, the inner cavity wall of each covering cavity 111c further has a plurality of connection strips 115 spaced apart thereon for connecting the inner cavity wall and the partition wall, one end of each of the plurality of connection strips 115 is connected to the corresponding contact partition wall, the other end is connected to the corresponding inner cavity wall, and the first end face of the plurality of connection strips 115 in the third direction Z is flush with the plug-in abutting face 111e.

[0038] The first electrical connector 1000 may further include an alignment structure disposed on the plug-in abutment surface 111e, the alignment structure comprising a plurality of alignment members disposed on the plug-in abutment surface 111e and located outside the plug-in mating portion 112. In the illustrated embodiment, the plurality of alignment members may include two first alignment members 113 connected to the ends of the first column of partition walls 112a and the seventh column of partition walls 112g along the second direction Y, respectively, and two second alignment members 114 connected to the ends of the third column of partition walls 112c and the fifth column of partition walls 112e along the second direction Y, respectively. The first alignment member 113 may include a first alignment block 1131 and a second alignment block 1132 spaced apart along the second direction Y and disposed outside the corresponding partition walls. The inner side surface of the first alignment block 1131 is connected to the end of the linear array partition wall 1121 of the corresponding partition wall, and the outer side surface of the first alignment block 1131 is connected to the inner side surface of the second alignment block 1132 via a connecting block 1133. The first and second alignment blocks 1132 are both protruding from the plug-in abutment surface 111e along the third direction Z. The connecting block 1133, the first alignment block 1131 and the second alignment block 1132 can be coaxially arranged. The dimensions of the first and second alignment blocks 1131 and 1132 along the first direction X are greater than the dimensions of the connecting block 1133 along the first direction X. The lengths of the first and second alignment blocks 1131 and 1132 along the third direction Z are greater than the length of the connecting block 1133 along the third direction Z, so that the first alignment block 1131 The second alignment block 1132 and the connecting block 1133 respectively form a fourth notch 1134 and a fifth notch 1135 on the side surfaces along the first direction X, thereby forming a sixth notch 1136 on the side surfaces along the third direction Z of the first alignment block 1131, the second alignment block 1132, and the connecting block 1133. The fourth notch 1134, the fifth notch 1135, and the sixth notch 1136 are integrally connected to form a "冂"-shaped alignment groove, while the first alignment block 1131 and the second alignment block 1132 form an alignment protrusion protruding from the alignment groove. The first and second alignment blocks 1131 and 1132 have first guide surfaces 1131a and 1132a formed on one end facing the mounting end of the second electrical connector 2000 and inclined in the first direction X. The second alignment block 1132 may also be provided with a second guide surface 1132b inclined in the mounting end direction and in the second direction Y toward the first alignment block 1131. The second alignment member 114 can be configured 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 wall 1121 of the corresponding partition wall.The first alignment block 1131 and the second alignment block 1132 can be coaxially arranged with the corresponding linear array partition wall 1121, and the two surfaces of the first alignment block 1131 and the second alignment block 1132 in the first direction are protruded from the two surfaces of the corresponding linear array partition wall 1121, so that the first alignment block 1131 and the second alignment block 1132 can be used as a contact partition wall located at the end surface of the linear array partition wall 1121, the material cost can be saved, and the space layout is more compact. The first alignment member 113 can realize fine alignment when plug-in connection is achieved from various directions through the arrangement of the first and second alignment blocks 1131, 1132 and the connecting block 1133, and the third alignment block can realize coarse alignment when plug-in connection is achieved.

[0039] Each leadframe pair includes two leadframes (first and second leadframes 121, 122) oppositely arranged along a first direction X on both sides of a corresponding linear array partition wall 1121. Each leadframe 121, 122 includes a leadframe housing 123 distributed along a second direction Y, a plurality of signal contacts 13a and ground contacts 13b spaced and covered in the leadframe housing 123 along the second direction Y, and a plurality of shielding portions 124 arranged on the leadframe housing 123 and holding a plurality of ground contacts 13b, for shielding signal interference between adjacent two leadframes. The corresponding mating ends 131 of the plurality of signal contacts 13a and ground contacts 13b extend out of one end of the leadframe housing 123 along a third direction Z, so as to be located in a corresponding accommodation space 1124, and the corresponding mounting ends 133 extend out of the other end of the leadframe housing 123 along the third direction Z in the opposite direction. The plurality of signal contacts 13a and ground contacts 13b spaced and covered in the leadframe housing 123 along the second direction Y form a corresponding linear array, that is, the plurality of signal contacts 13a and ground contacts 13b in the first leadframe 121 form a first linear array 141, and the plurality of signal contacts 13a and ground contacts 13b in the second leadframe 122 form a second linear array 142. The first linear array 141 and the second linear array 142 are separated by the linear array partition wall 1121. The leadframe housing 123 is covered in the corresponding covering cavity 111c, and one end of the leadframe housing 123 close to the corresponding mating end 131 is formed with a groove 1230 corresponding to the part between each adjacent two electrical contacts 13, and the one end of the leadframe housing 123 close to the corresponding mating end 131 is formed with a second protruding stop portion 1231 for abutting the second surface of the corresponding mating end 131 of the signal contact 13a and the ground contact 13b, wherein the second surface is the side surface away from the complementary mating end 231 of the complementary electrical connector when the corresponding mating end 131 is inserted and matched with the complementary mating end 231 of the complementary electrical connector. When each electrical contact 13 is scraped and pressed by the complementary electrical contact 23 of the complementary electrical connector during the insertion and matching of the corresponding mating end 131 of each electrical contact 13 with the complementary electrical connector, the second protruding stop portion 1231 can support the corresponding mating end 131 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 a first recess 1232 corresponding to the position of the ground contact 13b, the first recess 1232 is distributed on the first surface or the second surface of the leadframe housing 123 along the third direction Z, and both ends of the first recess 1232 along the third direction Z penetrate the first surface and the second surface of the leadframe housing 123 along the first direction X, thereby forming two first penetrating end portions 12321, and the ground contact 13b covered in the leadframe housing 123 is at least partially exposed in the first recess 1232.The leadframe housing 123 is formed with a second recess 1233 on the second surface or the first surface of the leadframe housing 123 in the first direction X, the second recess 1233 is distributed on the second surface or the first surface of the leadframe housing 123 in the third direction Z, and both ends of the second recess 1233 in the third direction Z penetrate the first surface and the second surface of the leadframe housing 123 in the first direction X, thereby forming two second penetrating ends 12331, and the signal differential pair covered in the leadframe housing 123 is at least partially exposed in the second recess 1233, which can optimize and improve the signal transmission environment.

[0040] The first surface or the second surface of the leadframe housing 123 is formed with a protrusion 1234, the shielding part 124 is formed with a recess 1242 corresponding to the protrusion 1234, and the shielding part 124 is connected to the ground contact 13b exposed in the first recess 1232 on both sides in the second direction Y. Wherein: the part of the ground contact 13b exposed in the first recess 1232 is formed with a first clamping hole part 1320b; the shielding part 124 includes a shielding sheet 1241 and a first clamping protrusion 1243 formed on both side edges of the shielding sheet 1241 in the second direction Y, and the first clamping protrusion 1243 on both sides corresponds to the first clamping hole part 1320b of the ground contact 13b, respectively, and the first clamping protrusion 1243 extends from both side edges of the shielding sheet 1241 in the first direction X to the first clamping hole part 1320b of the ground contact 13b to be connected to the first clamping hole part 1320b.

[0041] The corresponding mating end 131 of the plurality of signal contacts 13a and ground contacts 13b of the leadframe extends from the third notch 1124c communicating with the covering cavity 111c, and the corresponding mating end 131 of each electrical contact 13 is located in the corresponding accommodation space 1124, and a third gap J13 (see Figure 3 ) is formed between the surface of the linear array partition wall 1121 and the linear array partition wall 1121 opposite to the corresponding mating end 131 of each electrical contact 13, and when the corresponding mating end 131 of each electrical contact 13 is inserted and matched with the corresponding complementary electrical contact 23 of the complementary electrical connector, the corresponding mating end 131 of each electrical contact 13 is not damaged when it is pressed by the scraping force of the complementary electrical contact 23 and moves to the linear array partition wall 1121. The corresponding mounting end 133 of the plurality of signal contacts 13a and ground contacts 13b extends out of the leadframe and the outer housing in the third direction Z, and the part of the plurality of signal contacts 13a and ground contacts 13b buried in the leadframe housing 123 forms a buried section 132 of the corresponding electrical contact 13.

[0042] Please continue to refer to Figures 7 to 12 In the shown embodiment, the signal contact 13a and the ground contact 13b have substantially the same structure, each having a corresponding mating end 131, a corresponding mounting end 133, and a corresponding buried section 132 between them and buried in the lead frame housing 123, the corresponding mounting end 133 and the corresponding buried section 132 can be but not limited to in the same plane. In the embodiment, the corresponding mounting end 133 and the corresponding buried section 132 of the signal contact 13a and the ground contact 13b can have the same central axis C1, the corresponding mating end 131 has a central axis C2, the central axis C2 is offset from the central axis C1 along the first direction X and parallel or infinitely close to parallel, the central axis C2 of the corresponding mating end 131 is close to the direction of the complementary mating end 231 (positive direction) along the first direction X, and the central axis C1 of the corresponding mounting end 133 is away from the direction of the complementary mating end 231 (negative direction) along the first direction X. The buried section 132 of the signal contact 13a has a seventh notch 1321a on one side close to the adjacent ground contact 13b, and the side corresponding to the seventh notch 1321a of the buried section 132 of the ground contact 13b is formed with a protrusion 1321b. The protrusions 1321b on both sides make the length of the buried section 132 of the ground contact 13b located between the two protrusions 1321b along the second direction Y greater than the corresponding direction without the protrusion 1321b, so that the section of the buried section 132 provided with the protrusion 1321b is a wide section 1322b, and the section without the protrusion 1321b is a narrow section 1323b. The first clamping hole part 1320b described above is provided on the wide section 1322b of the buried section 132, and specifically two pairs of first clamping hole parts 1320b can be provided at both ends of the wide section 1322b along the third direction Z.

[0043] The two side surfaces of the signal contact 13a facing the first direction X are defined as the first surface 1301a and the second surface 1302a, and similarly, the two side surfaces of the ground contact 13b facing the first direction X are defined as the first surface 1301b and the second surface 1302b. The length of the first surface 1301a and the second surface 1302a of the signal contact 13a along the second direction Y is less than the corresponding length of the first surface 1301b and the second surface 1302b of the ground contact 13b. It should be understood that the structure of the ground contact 13b can also be designed to be different from that of the signal contact 13a, and any existing design of the ground contact 13b can be referred to.

[0044] In the shown embodiment, the respective mounting end 133 of each signal contact 13a and ground contact 13b can be configured such that each mating end (the plug mating end 131a of the signal contact 13a and the ground mating end 131b of the ground contact 13b) comprises a first extension section 1311 extending along a 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 two sub-sections along the Z-axis direction, one of which is a vertical section 13111 abutting against the protruding stop portion 1231, and the other of which is an inclined section 13112 extending from the vertical section 13111 in a first direction X (away from the complementary mating end 231). Correspondingly, a section of the central axis C2 corresponding to the vertical section 13111 is a vertical axis section C21, and a section of the central axis C2 corresponding to the inclined section 13112 is an inclined axis section C22. The fold-back portion has a first inflection point 1313 protruding the first surface 1301a, b in a positive direction of the first direction X and a second inflection point 1315 protruding the second surface 1302a, b of the first extension section 1311 in a negative direction of the first direction X; a first contact site 1313a is formed at the first inflection point 1313, and a second contact site 1311a is formed at the first surface 1301a, b of the first extension section 1311. The distance between the first contact site 1313a and the second inflection point 1315 is 0.5-0.95 mm. The horizontal distance between the central axis C2 of the plug mating end 131a and the central axis C1 of the mounting end is 0.1-0.5 mm, more specifically, the horizontal distance between the vertical axis section 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.

[0045] The folding portion includes a second extending section 1312 extending from the first extending section 1311 and deviating from the center axis C2 in the positive direction of the first direction X, a bending section 1314 formed after the second extending section 1312 is bent in the negative direction of the first direction X, and a folding section 1316 extending from the bending section 1314 toward the first extending section 1311. The first inflection point 1313 is formed at the intersection of the second extending section 1312 and the bending section 1314, the second inflection point 1315 is formed at the intersection of the bending section 1314 and the folding section 1316, and the first contact site 1313a is formed at the first surface 1301a, b of the first inflection point 1313 away from the second inflection point 1315 in the first direction X. The first and second surfaces of the first extending section 1311 of the signal contact 13a and the ground contact 13b are rectangular, the second extending section 1312 has a rectangular section 13121 close to the first extending section 1311 and a trapezoidal section 13122 extending away from the first extending section 1311 from the rectangular section 13121, the lengths of the first and second surfaces of the trapezoidal section 13122 in the second direction Y gradually decrease in the direction away from the first extending section 1311, and the rectangular section 13121 of the ground contact 13b has a plurality of elongated through holes 13123, such as two elongated through holes 13123, spaced apart in the second direction Y, each elongated through hole 13123 has a length in the third direction Z, and is used to adjust the elastic strength of the rectangular section 13121 of the ground contact 13b.

[0046] After the plurality of electrical contacts 13 are assembled on the electrically insulating housing 11, the first contact portion 1313a of each mating end of the first linear array 141 and the first contact portion 1313a of each mating end of the second linear array 142 are oriented in opposite directions. The respective mating end 131 is located in the respective accommodation space 1124, and the second inflection point 1315 and the return section 1316 of the respective mating end 131 are both close to the corresponding linear array partition wall 1121 and have the third gap J13 therefrom, and the first inflection point 1313 and the second extension section 1312 are away 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 is oriented toward the second notch 1124b of the accommodation 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 are all oriented toward the third notch 1124c. The first surfaces 1301a, b of the second extension section 1312 are formed with a convexity 1317 that protrudes in the positive direction of the first direction X, and the convexity 1317 can be provided at the position of the rectangular section 13121 of the second extension section 1312. The provision of the convexity 1317 not only increases the structural strength at the second extension section 1312, but also provides space for the extension length of the return section 1316, which is more conducive to the adjustment of signal transmission.

[0047] The bending section 1314 can be designed as a bending section that is circularly arcuate at one end and circularly arcuate at the other end. The bending section 1314 can also be designed as a bending section that is angularly bent at one end and angularly bent at the other end. The return section 1316 can be designed such that the end thereof overlaps the second surface 1302a, b of the second extension section 1312. The end of the return section 1316 can overlap the lower section (see Figure 12 ) or the upper section (see Figure 11 ) of the second extension section 1312. The distance from the first contact portion 1313a to the end of the return section 1316 is 3.05-5 mm. The second surface 1302a, b of the first extension section 1311 or the second extension section 1312 at the position corresponding to the end of the return section 1316 is also formed with a third recess 1318 that is recessed toward the first surface 1301a, b (see Figure 6), the end of the turn-back section 1316 is suspended or overlapped in the third recess 1318. When the turn-back section 1316 is designed to be suspended or overlapped on the second surface 1302a, b of the second extension section 1312, the third recess 1318 can be designed to overlap with the convex 1317, so that the third recess 1318 and the convex 1317 are integrally formed. When the convex 1317 is formed by stamping, the third recess 1318 is formed in the second surface 1302a, b by stamping of the convex 1317, which can reduce the difficulty and complexity of the manufacturing process. The corresponding mating end 131 of the electric connector assembly of the present application forms a closed loop through the first contact site 1313a, the second contact site 1311a and the end of the turn-back section 1316, so that the two electric connectors can achieve at least 56G high-speed transmission after being plugged and matched.

[0048] In the shown 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 site 1313a to the first extension section 1311, and the horizontal distance from the second inflection point 1315 to the center axis C2 is greater than the horizontal distance from the first inflection point 1313 to the center axis C2, so that the second inflection point 1315 and the first inflection point 1313 do not have symmetry, and the second inflection point 1315 is offset from the center axis C2 by a greater amount, further making the second inflection point 1315 directional, facilitating the recognition of the direction during installation and plugging, preventing installation and plugging errors and the like, further playing a role in protecting the electric contact 13 and prolonging the service life of the electric contact 13.

[0049] In the shown embodiment, when the signal contact 13a is mated with the corresponding complementary signal contact, the first contact portion 1313a of the signal contact 13a abuts against the complementary mating end 231 of the complementary signal contact and travels along the complementary mating end 231 for 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 convex surface of the convexity 1317 of the signal contact 13a is parallel to the convex surface of the convexity of the complementary signal contact with a distance of 0-0.2mm. The vertical distance between the second inflection point 1315 of the signal contact 13a and the second inflection point 1315 of the complementary signal contact is 2.5-4.5mm. 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 0.7-2.0mm. The second contact portion 1311a, the first extension section 1311 of the signal contact 13a located between the second contact portion 1311a and the second extension section 1312, the second extension section 1312 and the first contact portion 1313a of the signal contact 13a and the second contact portion 1311a, the first extension section 1311 of the complementary signal contact located between the second contact portion 1311a and the second extension section 1312, the second extension section 1312 and the first contact portion 1313a of the complementary signal contact enclose a space 1319 in the shape of a parallelogram. The second extension section 1312 of the signal contact 13a and the second extension section 1312 of the complementary signal contact form two long parallel sides of the parallelogram and the first extension section 1311 of the signal contact 13a and the first extension section 1311 of the complementary signal contact form two short parallel sides of the parallelogram.

[0050] Please refer to Figure 1 and 13The second electrical connector 2000 can have a structure similar to that of the first electrical connector 1000, and the second electrical connector 2000 is a complementary electrical connector that is mated with the first electrical connector 1000. The second electrical connector 2000 includes an electrically insulating housing 21 and a plurality of lead frames arranged in a first direction X on the electrically insulating housing 21. Each of the lead frames is arranged in a second direction Y that is perpendicular to the first direction X in a horizontal plane. A plurality of electrical contacts 23 is arranged in the second direction Y on each of the lead frames. The electrical contacts 23 are complementary electrical contacts 23 that are mated with the electrical contacts 13 of the first electrical connector. A first gap J21 is formed between adjacent electrical contacts 23. The plurality of electrical contacts 23 in each of the lead frames includes a plurality of signal contacts 23a and at least one ground contact 23b. Two adjacent signal contacts 23a form a differential signal pair. A second gap J22 is formed between adjacent differential signal pairs. The ground contacts 23b are preferably arranged one-to-one in the second gaps J22 between adjacent differential signal pairs. The plurality of signal contacts 23a and ground contacts 23b can also be arranged, for example, in a pattern of "G-S-S, S-G-S, S-S-G", where S represents a signal and G represents a ground. The plurality of electrical contacts 23 (including the signal contacts 23a and the ground contacts 23b) arranged in a line in the second direction Y form a line array. The plurality of signal contacts 23a and ground contacts 23b in each of the lead frames form a line array. Each of the signal contacts 23a includes a mating end and a mounting end. Each of the ground contacts 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 horizontal or row direction X, and the second direction Y is defined as a vertical or column direction Y. The plurality of lead frames is arranged in the row direction, and each of the lead frames extends in the column direction. The plurality of lead frames is defined as eight lead frames that are adapted to the first electrical connector 1000. The eight lead frames include a single lead frame on each of the two outer sides of the first direction X, which are defined as a first outer single lead frame 22a and a second outer single lead frame 22e. The eight lead frames also include three pairs of lead frames arranged 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. Each of the lead frame pairs includes a first lead frame 221 in which the plurality of electrical contacts 23 forms a first line array, and a second lead frame 222 in which the plurality of electrical contacts 23 forms a second line array. The first lead frame 221 and the second lead frame 222 are separated by a separation wall arranged in the second direction Y. The first line array and the second line array are arranged on opposite sides of the separation wall in the first direction X.The column interval passage is formed between the adjacent lead frame pairs, between the lead frame pairs and the corresponding outer single lead frame. In the shown embodiment, the first column interval passage 201 is formed between the first outer single lead frame 22a and the adjacent first inner lead frame pair 22b, the second column interval passage 202 is formed between the first inner lead frame pair 22b and the second inner lead frame pair 22c, the third column interval passage 203 is formed between the second inner lead frame pair 22c and the third inner lead frame pair 22d, and the fourth column interval passage 204 is formed between the third inner lead frame pair 22d and the second outer single lead frame 22e. When the second electrical connector 2000 is complementarily plugged with the first electrical connector 1000, the first interval passage of the second electrical connector 2000 is for the first outer lead frame pair 12a of the first electrical connector 1000 to be inserted, the second column interval passage 202 of the second electrical connector 2000 is for the first inner lead frame pair 12b of the first electrical connector 1000 to be inserted, the third column interval passage 203 of the second electrical connector 2000 is for the second inner lead frame pair 12c of the first electrical connector 1000 to be inserted, and the fourth column interval passage 204 of the second electrical connector 2000 is for the second outer lead frame pair 12d of the first electrical connector 1000 to be inserted; the first column interval passage 101 of the first electrical connector 1000 is for the first inner lead frame pair 22b of the second electrical connector 2000 to be inserted, the second column interval passage 102 of the first electrical connector 1000 is for the second inner lead frame pair 22c of the second electrical connector 2000 to be inserted, and the third column interval passage 103 of the first electrical connector 1000 is for the third inner lead frame pair 22d of the second electrical connector 2000 to be inserted.

[0051] Referring to Figures 13 to 22 The electrically insulating housing 21 has a side surface facing the first direction X in an L shape, a first end surface (lower end surface) along the third direction Z of the electrically insulating housing 21 can be defined as a plugging abutting surface 211e when the first electrical connector 1000 is plugged, and a second end surface along the second direction Y of the electrically insulating housing can be defined as a mounting abutting surface 211f (lateral end surface) when the second substrate is mounted. The electrically insulating housing 21 includes a cladding portion 211 and a plugging portion 212 arranged along the third direction Z. The cladding portion 211 includes an outer housing and seven inner partition walls 211b formed in an inner cavity 211a of the outer housing, the seven inner partition walls 211b are uniformly and spacedly arranged in the inner cavity 211a of the outer housing along the first direction X, and the inner cavity 211a is divided into eight cladding cavities 211c. It should be understood that the number of seven, eight, etc. in the embodiment is exemplified by the above eight lead frames, and is not used as a limitation of the electrical connector of the present application.

[0052] The outer housing includes a first side wall 21a and a second side wall 21b which are spaced apart and arranged in parallel along a first direction X, a third side wall 21c which is arranged along a second direction Y and connected to one end (front end in the drawing) of the first side wall 21a and the second side wall 21b in the second direction Y, a mounting abutting surface 211f which is formed on the first side wall 21a and the second side wall 21b away from the one end of the third side wall 21c, and a structure in which the first side wall 21a, the second side wall 21b and the third side wall 21c enclose so that an opening is formed at one end of the outer housing away from the plug-in fitting direction along a third direction Z and at one end of the outer housing away from the third side wall 21c along the second direction Y, and the seven inner partition walls 211b are all shaped to match the first side wall 21a and the second side wall 21b, and each of the partitioned coating cavities 211c is connected to the outside through the opening at one end away from the plug-in abutting surface 211e along the third direction Z and at one end away from the third side wall 21c along the second direction Y.

[0053] The plug-in portion 212 includes a plug-in housing, a plug-in space 212a formed in the plug-in housing, a plurality of partition walls, for example, three partition walls, formed in the plug-in space 212a and spaced apart in the first direction X, and an end surface of the plurality of partition walls and the plug-in housing facing the plug-in direction forming the plug-in abutting surface 211e. In the illustrated embodiment, the plug-in housing includes a first outer side wall 21a1 extending from the first side wall 21a in the plug-in direction, a second outer side wall 21b1 extending from the second side wall 21b in the plug-in direction, a third outer side wall 21c1 extending from the third side wall 21c in the plug-in direction, and a fourth outer side wall 21d connected to one end of the first outer side wall 21a1 and the second outer side wall 21b1 away from the third outer side wall 21c1. The lengths of the first outer side wall 21a1 and the second outer side wall 21b1 in the second direction Y are greater than the lengths of the first side wall 21a and the second side wall 21b in the corresponding directions, and the first outer side wall 21a1 and the second outer side wall 21b1 protrude from the first side wall 21a and the second side wall 21b in a direction away from the third side wall 21c (the rear direction in the illustration), so that the plug-in space 212a has a portion that protrudes beyond the covering cavity in a direction away from the third side wall 21c, which is directly connected to the outside along the third direction Z. The ends of the seven inner partition walls 211b facing the plug-in direction all protrude into the plug-in space 212a, and the portions protruding into the plug-in space 212a can be defined as first protruding sections 211b1. The distances of the first protruding sections 211b1 protruding into the plug-in space 212a can be set according to different embodiments, and the first protruding sections 211b1 also extend in the second direction Y toward the fourth outer side wall 21d and are connected thereto, thereby forming first extension sections 211b2. The ends of the first extension sections 211b2 away from the first protruding sections 211b1 are formed with first clamping joints 211b3, which penetrate the first extension sections 211b2 in a direction away from the first protruding sections 211b1 and away from the plug-in direction.

[0054] The three partition walls are erected one-to-one on an end surface of the second, fourth, and sixth inner partition walls 211b facing the direction of the insertion fitting, and can be integrally formed with them. Therefore, the three partition walls can be defined as the second, fourth, and sixth column partition walls 212b, 212d, and 212f, which are displaced from the first column partition walls 112a, the third column partition walls 112c, the fifth column partition walls 112e, and the seventh column partition walls 112g of the first electrical connector 1000, the second inner partition wall 211b and the second column partition wall 212b being used to partition the first lead frame 221 and the second lead frame 222 of the first inner side lead frame pair 22b, the fourth inner partition wall 211b and the fourth column partition wall 212d being used to partition the first lead frame 221 and the second lead frame 222 of the second inner side lead frame pair 22c, and the sixth inner partition wall 211b and the sixth column partition wall 212f being used to partition the first lead frame 221 and the second lead frame 222 of the third inner side lead frame pair 22d.

[0055] Each column of the separation walls includes a line array separation wall 2121 formed between the first lead frame 221 and the second lead frame 222 for separating the first line array and the second line array, a first contact separation wall 2122 formed on a first surface of the line array separation wall 2121 for separating each electrical contact 23, and a second contact separation wall 2123 formed on a second surface of the line array separation wall 2121 for separating each electrical contact 23. The first contact separation wall 2122 is a plurality of first contact separation walls 2122 corresponding to the number of the electrical contacts 23 of the first line array, which are spaced apart on the first surface of the line array separation wall 2121 along the second direction Y and each extends along the first direction X to a first gap J21 between corresponding two electrical contacts 23, i.e., between adjacent signal contacts 23a in the first line array and between an adjacent signal contact 23a and a ground contact 23b. The second contact separation wall 2123 has a similar number and position to the first contact separation wall 2122, which will not be described again. Adjacent two contact separation walls (adjacent two first contact separation walls 2122 and adjacent two second contact separation walls 2123) and the line array separation wall 2121 enclose a receiving space 2124 for receiving the corresponding electrical contact 23, which forms a first notch in the direction of the corresponding electrical contact 23 along the first direction X, a second notch in the direction of the second electrical connector 2000 along the third direction Z, and a third notch in the direction of the covering portion 211 for communicating with the corresponding covering cavity 211c. In the shown embodiment, corresponding to the first outer single lead frame 22a and the second outer single lead frame 22e, the inner side wall of the first outer side wall 21a1 and the second outer side wall 21b1 is provided with a third contact separation wall 2125 for separating each electrical contact 23 according to the structure of the separation wall, and adjacent two third contact separation walls 2125 and the inner side of the corresponding outer side wall form a receiving space 2124 for receiving the corresponding electrical contact 23.

[0056] The second electrical connector 2000 can further include an alignment structure disposed at the plug abutting surface 211e, the alignment structure of the second electrical connector 2000 being configured to align 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 plug abutting 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 complementarily align with the first electrical connector 1000. The complementary alignment members can be disposed to include two first complementary alignment members 213 formed at the outer side of the third outer side wall 21c1 and the fourth outer side wall 21d corresponding to two first alignment member positions of the first electrical connector 1000, and two second complementary alignment members 214 formed at the inner side of the third outer side wall 21c1 and the fourth outer side wall 21d corresponding to two second alignment members. The first complementary alignment members 213 can be disposed to include a first complementary recess 2131, a second complementary recess 2132, and a partition 2133 located between the first complementary recess 2131 and the second complementary recess 2132, the first complementary recess 2131 being shaped to complementarily align with the first alignment block 1131, the second complementary recess 2132 being shaped to complementarily align with the second alignment block 1132, and the partition 2133 having a U-shaped recess 2134 formed at a position corresponding to the connection block 1133 to complementarily align with the connection block 1133. The second complementary alignment members 214 are third complementary recesses 2141 shaped to complementarily align with the third alignment block of the first electrical connector 1000.

[0057] Each leadframe pair includes two leadframes (first and second leadframes 222) oppositely arranged along the first direction X on two sides of the linear array partition wall 2121. Each leadframe (including the first and second leadframes 222, the first and second outer single leadframes 22e) includes a leadframe housing 223, a plurality of the signal contacts 23a and ground contacts 23b spaced in the leadframe housing 223 along the second direction Y, and a shielding sheet 224 arranged on the leadframe housing 223 for shielding signals between the ground contacts 23b and adjacent differential signal pairs, respective mating ends 231 of the plurality of the signal contacts 23a and ground contacts 23b extending out of one end of the leadframe housing 223 along a third direction Z, so as to be located in the corresponding accommodation space 2124, and the respective mating end 231 of each electrical contact 23 is opposite to the surface of the linear array partition wall 2121 and the linear array partition wall 2121 forms a third gap J23 therebetween, and when each electrical contact 23 is inserted and mated with the corresponding electrical contact 13 of the first electrical connector, each electrical contact 23 is pressed by the scraping force of the corresponding electrical contact 13 and moves towards the linear array partition wall 2121 without abutting against the linear array partition wall 2121, thereby protecting the respective mating end 231 of each electrical contact 23 from being damaged. Respective mounting ends 233 of the plurality of the signal contacts 23a and ground contacts 23b extend out of the leadframe housing 223 along the second direction Y. It should be understood that the respective mounting ends 233 of the plurality of the signal contacts 23a and ground contacts 23b can also extend out of the leadframe housing 223 along the first direction X, as long as the first direction X is a direction perpendicular to the third direction Z.

[0058] The lead frame housing 223 is covered in the corresponding covering cavity 211c, and the lead frame housing 223 is formed with a protruding stop portion 2231 at one end close to the corresponding complementary mating end 231 for abutting against the second surface of the mating end of the signal contact 23a and the ground contact 23b, wherein the second surface is a side surface away from the corresponding mating end 131 of the first electrical connector when the corresponding complementary mating end 231 is inserted and mated with the corresponding mating end 131 of the first electrical connector, and when each electrical contact 23 is scraped and pressed by the corresponding electrical contact 13 of the first electrical connector, the protruding stop portion 2231 can support the corresponding complementary mating end 231 to prevent the electrical contact 23 from loosening and deforming, etc. In the shown embodiment, the lead frame housing 223 protrudes into the insertion and mating space 212a along the third direction Z at the end close to the insertion and mating end, and the part protruding into the insertion and mating space 212a can 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, and the second protruding section 223a also extends along the second direction Y to the fourth outer side wall 21d and approaches the fourth outer side wall 21d, thereby forming a second extending section 223b, and one end of the second extending section 223b away from the second protruding section 223a is formed with a sunken step 223c, and the surface of the sunken step 223c is lower than the bottom surface (the surface close to the insertion direction) of the first caulking 211b3.

[0059] The plurality of signal contacts 23a and ground contacts 23b in the second direction Y are spaced apart in the leadframe housing 223 to form a corresponding linear array, i.e. the plurality of signal contacts 23a and ground contacts 23b in the first leadframe 221 form a first linear array, and the plurality of signal contacts 23a and ground contacts 23b in the second leadframe 222 form a second linear array. The first linear array and the second linear array are separated by the linear array separation wall 2121, and the first linear array and the second linear array are oppositely arranged, i.e. the first contact portions 2313a of the electrical contacts 23 of the first linear array on the first side of the linear array separation wall 2121 and the first contact portions 2313a of the electrical contacts 23 of the second linear array on the second side of the linear array separation wall 2121 are oppositely directed. The first end of the first linear array in the second direction Y is a single odd contact, and the first end of the first linear array to the second end in the second direction Y is arranged in a cross manner of ground contacts 23b and differential signal pairs; the second end of the second linear array is a single odd contact, and the second end of the second linear array to the first end is arranged in a cross manner of ground contacts 23b and differential signal pairs. The corresponding complementary mating ends 231 of the plurality of electrical contacts 23 in each leadframe are spaced apart in the second direction Y on one end of the second protruding section 223a facing the insertion direction, and at least one electrical contact 23 is distributed on one end of the second extending section 223b facing the insertion direction. The corresponding mounting ends 233 of the plurality of electrical contacts 23 in each leadframe are spaced apart in the third direction Z on one end of the leadframe housing 223, and the embedded section of each electrical contact 23 embedded in the leadframe housing 223 is distributed in an arc shape in the leadframe housing 223. In the shown embodiment, the structure or function of the corresponding complementary mating ends 231 and mounting ends of the signal contacts 23a and the ground contacts 23b is the same as or similar to that of the corresponding mating ends 131 and the corresponding 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 adaptively adjusted to an arc shape to adapt to the structure of the right-angle electrical connection.

[0060] The shielding sheet 224 is connected to the leadframe housing 223 at the first surface or the second surface in the first direction X. The shielding sheet 224 protrudes into the insertion space 212a on one end in the third direction Z close to the insertion mating end, and the part protruding into the insertion space 212a can be defined as a third protruding section 224a, the protruding distance of the third protruding section 224a is adapted to the protruding distances of the first protruding section 211b1 and the second protruding section 223a, the third protruding section 224a further extends in the second direction Y towards the fourth outer side wall 21d and approaches the fourth outer side wall 21d, thereby forming a third extending section 224b, and the third extending section 224b forms a second seam 224c at a position opposite the first seam 211b3 in the first direction X.

[0061] The surface of the shielding sheet 224 opposite to the ground contact 23b is formed with a matching protrusion 2242, which is composed of a plurality of protrusion segments distributed along the length direction of the ground contact 23b, and each protrusion segment is formed with a second clamping protrusion 2243 facing the ground contact 23b. The surface of the lead frame housing 223 opposite to the protrusion 2242 is formed with a first slit 2232, which penetrates the surface of the lead frame housing 223 along the direction opposite to the protrusion 2242, and the length of the first slit 2232 and the protrusion 2242 is more than half of the length between the mating end and the mounting end of the ground contact 23b. The first slit 2232 is composed of a plurality of first slit segments distributed along the length direction of the ground contact 23b, and each first slit segment is further formed with a second clamping hole 2233 penetrating the lead frame housing 223 along the first direction X, which corresponds to the second clamping protrusion 2243. The shielding sheet 224 is connected to the first surface or the second surface of the lead frame housing 223 by the cooperation of the protrusion 2242 and the first slit 2232, and the second clamping protrusion 2243 and the second clamping hole 2233.

[0062] The surface of the lead frame housing 223 away from the shielding sheet 224 is formed with a second slit 2234 distributed along the length direction of the differential signal pair, which penetrates the surface of the lead frame housing 223 along the direction away from the shielding sheet 224, and 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. The opposite edges of each differential signal pair are respectively formed with a plurality of pairs of first lugs 232a protruding in opposite directions, and the plurality of pairs of first lugs 232a are distributed along the length direction of the differential signal pair on the two opposite edges of the differential signal pair, and the distance between each pair of first lugs 232a is greater than zero and less than the distance between the two opposite edges. The two opposite edges of each differential signal pair and the adjacent ground contact 23b are respectively formed with a plurality of pairs of second lugs 232b protruding in opposite directions, and each pair of second lugs 232b is located on the same straight line as the corresponding pair of first lugs 232a along the second direction Y. The second slit 2234 is composed of a plurality of second slit segments corresponding to the plurality of pairs of first lugs 232a and second lugs 232b distributed along the length direction of the differential signal pair. The second slit segment is formed with a third slit 2235 for the corresponding pair of first lugs 232a and second lugs 232b to be exposed to the lead frame housing 223 in the direction away from the shielding sheet 224, and the third slit 2235 is arranged perpendicular to the corresponding second slit segment.

[0063] 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 hole 2236 is formed at the second protruding section 223a in the second direction Y. The part of the ground contact 23b located in the first through hole 2236 is shielded by the shielding sheet 224 from the side facing the shielding sheet 224, and exposed to the outside from the side facing away from the shielding sheet 224 through the first through hole 2236. The side of the lead frame housing 223 facing away from the shielding sheet 224 in the first direction X is formed with a first ground bar 25 for connecting a plurality of the ground contacts 23b in series, and in the illustrated embodiment, the first ground bar 25 is attached to the side of the second protruding section 223a facing away from the shielding sheet 224. The first ground bar 25 has a main section 25a attached to the side of the second protruding section 223a facing away from the shielding sheet 224, and a fourth extending section 25b extending from the main section 25a in the second direction Y toward the fourth outer side wall 21d. The fourth extending section 25b is attached to the side of the second extending section 223b facing away from the shielding sheet 224, and the fourth extending section 25b is formed with a third slit 25c at a position opposite the first and second slits 211b3, 224c in the first direction X. The third slit 25c is shaped to match the first and second slits 211b3, 224c, and penetrates the fourth extending section 25b from a direction away from the main section 25a and from the direction of insertion. The first ground bar 25 is formed with a notch 251 at a position opposite the respective complementary mating end 231 of the differential signal pair for exposing the respective complementary mating end 231 to the outside in the first direction X. The part of the first ground bar 25 opposite the first through hole 2236 protrudes toward the ground contact 23b to form a series protrusion 252 in contact with the ground contact 23b. The part of the ground contact 23b opposite the first through hole 2236 is formed with a second through hole 231b, and the series protrusion 252 is formed with a third through hole 253 at a position opposite the second through hole 231b. The surface of the shielding sheet 224 is formed with a protruding column portion 224d penetrating the first through hole 2236, the second through hole 231b, and the third through hole 253 to connect therewith at a position opposite the first through hole 2236, the second through hole 231b, and the third through hole 253.

[0064] In the shown embodiment, the second electrical connector 2000 can also be configured to include a second ground strip 26 connected in series with the corresponding first ground strip 25 and the shielding sheet 224 along the first direction X, the second ground strip 26 can be configured to include a bus bar 261 distributed along the first direction X, a first branch bar 262 led from the bus bar 261, and a second branch bar 263 led from the bus bar 261, the first branch bar 262 connected with the shielding sheet 224 of one of the two adjacent lead frames and the first ground strip 25 of the other lead frame, and the second branch bar 263 connected with the first ground strip 25 and the shielding sheet 224 of the same lead frame.

[0065] In the shown embodiment, the length of the bus bar 261 along the third direction Z is adapted to the depth of the first, second and third slits 211b3, 224c, 25c along the third direction Z, and in assembly, the corresponding surface of the bus bar 261 along the second direction Y is attached to the corresponding side surface of the first, second and third slits 211b3, 224c, 25c, and the surface of the bus bar 261 facing the insertion direction is attached to the bottom surface of the first, second and third slits 211b3, 224c, 25c, and the length of the bus bar 261 along the second direction Y is adapted to the size of the corresponding direction of the first, second and third slits 211b3, 224c, 25c, so that after the bus bar 261 is clamped in the first, second and third slits 211b3, 224c, 25c, the surface of the bus bar 261 along the second direction Y away from the main body section 25a is located in the same plane as the extension end surface of the first, second, third and fourth extension sections 211b2, 223b, 25b. Each first branch bar 262 is located in the gap between each adjacent two lead frames, the first branch bar 262 is led out from the surface of the bus bar 261 opposite to the gap between the two lead frames in the direction of the gap, and one side surface of the first branch bar 262 along the first direction X is connected to the shielding sheet 224 of the lead frame on that side, and the other side surface is connected to the first ground bar 25 of the adjacent other lead frame. The second branch bar 263 is led out from the bus bar 261 in the direction opposite to the sunken step 223c, the surface of the second branch bar 263 facing the insertion direction is attached to the table surface of the sunken step 223c, one side surface of the second branch bar 263 along the second direction Y is located on the inner side surface of the fourth outer side wall 21d, and the opposite side surface is attached to the extension end surface of the second extension section 223b, and the two side surfaces of the second branch bar 263 along the first direction X are connected to the shielding sheet 224 and the first ground bar 25 outside the lead frame housing 223, specifically, one side surface of the second branch bar 263 is connected to the corresponding side surface of the fourth extension section 25b of the first ground bar 25 attached to the same lead frame, and the other side surface is connected to the corresponding side surface of the third extension section 224b of the shielding sheet 224 attached to the same lead frame.

[0066] In the shown embodiment, the second electrical connector 2000 can also be configured to include a right-angle fixing member 27 connected to an end of each lead frame away from the corresponding complementary mating end 231 in the third direction Z, the right-angle fixing member 27 having a first flat fixing block 271 connected to an end of each lead frame away from the corresponding mounting end 233 and a second flat fixing block 272 connected to an end of each lead frame away from the corresponding complementary mating end 231; the first flat fixing block 271 being formed with a fourth slit 273 opposite each lead frame housing 223, and the second flat fixing block 272 being formed with a fifth slit 274 opposite each lead frame housing 223; each lead frame housing 223 being formed with a corresponding protrusion opposite the fourth slit 273 and the fifth slit 274.

[0067] The electrical connector and the electrical connector assembly of the present application, by adopting the structure shown in the above embodiments, can at least achieve the following functions and effects: (1) the corresponding mating end of the electrical contact adopts the return portion of the closed loop structure, which is beneficial to the stability of high-speed signal transmission; (2) the protruding stop portion of a specific structure is designed on the end of the lead frame close to the corresponding mating end, and the protruding stop portion is limited to the side of the corresponding mating end of the electrical contact away from the complementary mating end, so that when each electrical contact is scraped and pressed by the complementary electrical contact of the complementary electrical connector, the protruding stop portion can support the corresponding mating end to prevent the electrical contact from being damaged due to excessive elastic deformation; (3) the vertical distance between the second inflection point and the first extension section is greater than the vertical distance between the first contact position and the first extension section, and the horizontal distance between the second inflection point and the center axis is greater than the horizontal distance between the first inflection point and the center axis, so that the second inflection point and the first inflection point are not symmetrical, the second inflection point is more offset from the center axis, the second inflection point has directionality, which is convenient for identifying the direction during installation and plugging, prevents installation and plugging errors, and further plays a role in protecting the electrical contact and prolonging the service life of the electrical contact; (4) the corresponding mating end of the grounding contact is designed with at least one elongated through hole, which can improve the elastic performance of the corresponding mating end, and the above can enable the electrical connector and the electrical connector assembly of the present application to achieve a data transmission rate of at least 56 gigabits per second.

[0068] The above embodiments only express the preferred embodiments of the present application, which are described in detail and specifically, but cannot be understood as limiting the scope of the patent. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which are within the scope of protection of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. An electrical connector, comprising: an electrically insulating housing; A plurality of signal contacts are supported by an electrically insulating housing and include a mating end and a mounting end, with adjacent signal contacts forming a differential signal pair; wherein each of the mating ends includes a first extension segment extending along a central axis and a folded portion extending from the first extension segment to form a closed loop structure; the folded portion has a first inflection point protruding from a first surface of the first extension segment in a positive direction in a first direction and a second inflection point protruding from a second surface of the first extension segment in a negative direction in the first direction; a first contact portion is formed at the first inflection point, and a second contact portion is formed on the first surface of the first extension segment; as well as A ground contact is supported by the electrically insulating housing and includes a ground mating end and a corresponding ground mounting end.

2. The electrical connector according to claim 1, wherein: The folded portion includes a second extending section extending from the first extending section and deviating from the central axis in the first direction, a bent section formed by bending the second extending section in the opposite direction along the first direction, and a folded section extending from the bent section toward the first extending section. The first inflection point is formed at the intersection of the second extension section and the bending section, the second inflection point is formed at the intersection of the bending section and the folded-back section, and the first contact portion is formed at the first surface of the first inflection point away from the second inflection point along the first direction.

3. The electrical connector according to claim 2, wherein: The bending section is an arc section with one end transitioning to the second extension section and the other end transitioning to the return section; or The bending section is a bending section in which one end is bent and transitioned to the second extension section and the other end is bent and transitioned to the return section.

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

5. The electrical connector according to 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 portion 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 according to claim 2, wherein: The distance from the first contact portion to the second inflection point is 0.5 to 0.95 mm; and / or The distance from the first contact portion to the end of the folded section is 3.05-5 mm.

7. The electrical connector according to claim 1, wherein: A horizontal distance between a central axis of the plug-fitting end and a central axis of the mounting end is 0.1 to 0.5 mm.

8. The electrical connector according to claim 1, wherein: When the plug-in mating end is plugged into the complementary mating end of the corresponding complementary signal contact, the central axis of the plug-in mating end approaches the complementary mating end along the first direction, and the central axis of the mounting end moves away from the complementary mating end along the first direction.

9. The electrical connector according to claim 2, wherein: A convex bulge extending forwardly along the first direction is formed on the first surface of the second extending section.

10. The electrical connector according to claim 9, wherein: When the signal contact is plugged into and mated with the corresponding complementary signal contact, the first contact portion abuts against the complementary mating end of the complementary signal contact and straddles the complementary mating end for a scraping distance until the first contact portion of the signal contact contacts the second contact portion of the complementary signal contact, and the second contact portion of the signal contact contacts the first contact portion of the complementary signal contact; the distance from the convex surface of the convex bump of the signal contact to the convex surface of the convex bump of the complementary signal contact is 0 to 0.2 mm.

11. The electrical connector according to claim 2, wherein: When the signal contact is plugged and mated with the corresponding complementary signal contact, the first contact portion abuts against the complementary mating end of the complementary signal contact and travels a scraping distance along the complementary mating end until the first contact portion of the signal contact contacts the second contact portion of the complementary signal contact, and the second contact portion of the signal contact contacts the first contact portion of the complementary signal contact; The vertical distance between the second inflection point of the signal contact and 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 according to claim 11, wherein: The second contact portion of the signal contact, a section on the first extension section from the second contact portion to the second extension section, the second extension section and the first contact portion, and the second contact portion of the complementary signal contact, a section on the first extension section from the second contact portion to the second extension section, the second extension section and the first contact portion together 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 the 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 according to any one of claims 1 to 12, wherein: include: The invention comprises at least one first lead frame and at least one second lead frame distributed along a first direction and supported by an electrically insulating housing, wherein the first lead frame and the second lead frame arranged opposite to each other form a lead frame pair; the first lead frame and the second lead frame each comprise a lead frame housing, a plurality of signal contacts and ground contacts spaced apart and enclosed in the lead frame housing along a second direction, and a shielding portion provided on the lead frame housing for shielding signal interference between two adjacent lead frames, wherein corresponding mating ends of the plurality of signal contacts and ground contacts extend out of one end of the lead frame housing along a third direction, and corresponding mounting ends extend out of the other end of the lead frame housing along the third direction or a second direction forming a right angle with the third direction or the first direction; A convex stop portion is formed at one end of the lead frame housing close to the corresponding mating end and is used to abut against the second surface of the corresponding mating end of the signal contact and the ground contact.

14. The electrical connector according to claim 13, wherein: A first recess is formed on the first surface or the second surface of the lead frame housing 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 housing along the third direction, and both ends of the first recess along the third direction penetrate the first surface and the second surface of the lead frame housing along the first direction, thereby forming two first through-ends, and the ground contact enclosed in the lead frame housing is at least partially exposed in the first recess; A convex portion is formed on the first surface or the second surface of the lead frame housing at a position corresponding to each differential signal pair, and a concave portion for mounting and cooperating with the convex portion is formed on the second surface or the first surface of the shielding portion at a position corresponding to the convex portion, and the shielding portion is connected to the ground contacts exposed in the first concave on both sides along the second direction.

15. The electrical connector according to claim 13, wherein: The shielding part includes a shielding plate connected to the first surface or the second surface along the first direction of the lead frame shell; a first through hole is formed in the lead frame shell at the position corresponding to each grounding contact, and the part of the grounding contact located in the first through hole is shielded by the shielding plate on the side facing the shielding plate, and is exposed to the outside through the first through hole; a first grounding strip for connecting multiple grounding contacts in series is formed on the side of the lead frame shell away from the shielding plate along the first direction, and the part of the first grounding strip facing the first through hole protrudes toward the grounding contact to form a series protrusion that contacts the grounding contact.

16. An electrical connector assembly comprising a first electrical connector and a second electrical connector that is a complementary type that is plugged into and mated with the first electrical connector, the first electrical connector being the electrical connector according to claim 14, and the second electrical connector being the electrical connector according to claim 15, wherein when the signal contact of the first electrical connector is plugged into and mated with the complementary signal contact corresponding to the second electrical connector, the first contact portion of the signal contact of the first electrical connector abuts against the complementary mating end of the complementary signal contact and straddles the complementary mating end for a scraping distance until the first contact portion of the signal contact contacts the second contact portion of the complementary signal contact and the second contact portion of the signal contact contacts the first contact portion of the complementary signal contact; the mounting ends of the electrical contacts of the first electrical connector are mounted on a first substrate, and the mounting ends of the electrical contacts of the second electrical connector are mounted on a second substrate.

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