CN113555714B

CN113555714B - Electric connector

Info

Publication number: CN113555714B
Application number: CN202110702668.0A
Authority: CN
Inventors: 何志立
Original assignee: Zhongshan Yide Electronics Co ltd
Current assignee: Zhongshan Yide Electronics Co ltd
Priority date: 2021-02-02
Filing date: 2021-06-24
Publication date: 2023-05-23
Anticipated expiration: 2041-06-24
Also published as: CN215600610U; CN113193407A; CN113193407B; CN113555714A

Abstract

The invention discloses an electric connector, which comprises at least one electric module, wherein the electric module comprises: an insulating body, wherein a plurality of accommodating grooves are concavely arranged from a first side of the insulating body towards a second side of the insulating body; the terminal assemblies are respectively accommodated in the corresponding accommodating grooves, each terminal assembly comprises an insulating block, a pair of signal terminals fixed on the insulating block and a shielding shell covering the insulating block and the signal terminals, and each shielding shell is provided with a first shielding side surface exposed to the first side; the shielding piece is provided with a plurality of first spokes and a plurality of second spokes, each first spoke is in mechanical contact with a plurality of shielding shells positioned on the same electrical module, the plurality of second spokes are correspondingly fixed with a plurality of shielding shells, and each second spoke is in contact with the corresponding first shielding side face of the shielding shell so as to mutually conduct the plurality of shielding shells with the shielding piece, and the high-frequency performance of the electric connector is improved.

Description

Electric connector

[ field of technology ]

The present invention relates to an electrical connector, and more particularly, to an electrical connector with high frequency performance.

[ background Art ]

A conventional backplane electrical connector, such as chinese patent CN201580014851.4, see fig. 4A-8B of the specification of which includes a plurality of modules 910 assembled in a two-dimensional array, each module 910 including a pair of conductive elements 925, 935 configured to carry differential signals, a housing 918 securing the pair of conductive elements 925, 935, and a shield member 916 surrounding the conductive elements 925, 935, the plurality of modules 910 being assembled to one another by a protrusion 912 and a recess 914 of the shield member 916.

However, in the electrical connector, the plurality of modules 910 are assembled with each other only by the protruding portion 912 and the recessed portion 914 of the shielding member 916, and the plurality of modules 910 are easily separated from each other, resulting in unstable electrical connector structure; the shield members 916 of the three modules 910 positioned on the same sheet 754A to 754D are in contact with each other by the protruding portions 912, contact between the plurality of shield members 916 is easily affected by errors in the fitting dimensions between the protruding portions 912 and the recessed portions 914, poor contact is easily caused, mutual conduction between the plurality of shield members 916 is easily affected, and assembly gaps are formed between the plurality of shield members except for the protruding portions 912 and the recessed portions 914, so that signal crosstalk occurs in the conductive elements 925, 935 in the plurality of modules 910, thereby affecting high-frequency performance of the electrical connector.

Therefore, there is a need to design a new electrical connector to overcome the above-mentioned problems.

[ invention ]

The invention aims to provide an electric connector which conducts a plurality of shielding shells positioned in the same electric module through a first spoke of a shielding piece, and contacts the corresponding first shielding side surface through the surface of a second spoke of the shielding piece so as to conduct the shielding shells and the shielding piece mutually and improve high-frequency performance.

In order to achieve the above purpose, the invention adopts the following technical scheme: an electrical connector includes at least one electrical module, the electrical module including: an insulating body having a first side in a first direction and a second side opposite to the first side, a plurality of receiving grooves concavely provided from the first side toward the second side of the insulating body and arranged along a second direction perpendicular to the first direction; the terminal assemblies are respectively accommodated in the corresponding accommodating grooves, each terminal assembly comprises an insulating block, a pair of signal terminals fixed on the insulating block and a shielding shell covering the insulating block and the signal terminals, and each shielding shell is provided with a first shielding side surface exposed to the first side; the shielding piece is shielded on the outer side of the first shielding side face and is adjacent to the first side, the shielding piece is provided with a plurality of first spokes and a plurality of second spokes, each first spoke is in mechanical contact with a plurality of shielding shells positioned on the same electrical module, the plurality of second spokes are respectively fixed with the plurality of shielding shells correspondingly, the side edge of each second spoke is intersected and connected with at least one first spoke, and the plate surface of each second spoke extends along the first shielding side face of the corresponding shielding shell and is in contact with the corresponding first shielding side face.

Further, the insulating body is provided with a plurality of spacing parts, a plurality of spacing parts and a plurality of accommodating grooves are alternately arranged on the insulating body along the second direction, one spacing part is arranged between every two adjacent accommodating grooves so as to separate two adjacent shielding shells, at least one inserting part is convexly arranged on one of the shielding shells and one adjacent spacing part, and at least one first fixing groove is concavely arranged on the other of the shielding shells and the adjacent spacing parts to be matched and fixed with the inserting part.

Further, the first shielding side surface of each shielding shell is provided with the plugging portion along the extending direction of at least one first spoke, the corresponding spacing portion is provided with the first fixing groove, the plugging portions of the shielding shells positioned in the same electrical module are arranged along the extending direction of at least one first spoke and are exposed to the first side of the insulating body, and the plate surface of at least one first spoke is shielded along the first direction and contacts with the corresponding plugging portion.

Further, the insulating body is provided with a spacing part between every two adjacent containing grooves, each spacing part is provided with a plurality of second fixing grooves corresponding to a plurality of first spokes respectively, each second fixing groove penetrates through the spacing part along the extending direction of the corresponding first spoke, a plurality of second fixing grooves are arranged along the extending direction of each first spoke, each first spoke is contained in the plurality of second fixing grooves arranged along the extending direction of the first spoke, and each second spoke is contained in the corresponding containing groove.

Further, each shielding shell is provided with a second shielding side surface opposite to the first shielding side surface, each second shielding side surface is limited by the corresponding side wall surface of the accommodating groove along the first direction, a protruding part is protruding towards the first side of the insulating body from the groove wall surface of each second fixing groove, and each first spoke is provided with a plurality of through holes which are respectively matched and fixed with a plurality of protruding parts.

Further, each shielding shell comprises a first shielding piece and a second shielding piece, the side face of the first shielding piece and the side face of the second shielding piece are fixed through a plurality of fixing mechanisms, and the plate face of each second spoke shields at least one fixing mechanism in the first direction.

Further, in the same terminal assembly, the first shielding member and the second shielding member are two opposite U-shaped structures, opposite sides of the first shielding member are covered and fixed with opposite outer sides of the second shielding member, each signal terminal, the first shielding member and the second shielding member are provided with a bending section at the same position, a first notch is concavely formed from the edge of the bending section of the first shielding member, a second notch is concavely formed from the edge of the bending section of the second shielding member, the second notch is covered by the bending section of the first shielding member, and the first notch is located at the outer side of the bending section of the second shielding member and is not communicated with the second notch.

Further, the first shielding member is provided with a plurality of pairs of contact protruding points, the two contact protruding points of each pair are respectively arranged on two opposite side surfaces of the first shielding member and are oppositely protruded, a distance between the two contact protruding points of each pair in the first direction is defined as a first distance, a distance between the two opposite outer side surfaces of the second shielding member in the first direction is defined as a second distance, and when the first shielding member and the corresponding second shielding member are not matched and fixed, the first distance is smaller than the second distance; when the first shielding piece and the corresponding second shielding piece are fixed, the two contact protruding points of each pair are respectively contacted with the opposite outer side surfaces of the second shielding piece, and the first distance is equal to the second distance.

Further, each pair of signal terminals is arranged in parallel along the first direction, each signal terminal has a contact portion, a connection portion and a connection portion between the contact portion and the connection portion, the contact portion extends along the third direction from one end of the connection portion and is used for contacting with a mating terminal of a mating connector along the second direction, a third direction is defined to be perpendicular to the first direction and the second direction, each shielding shell has a body portion accommodated in the corresponding accommodating groove and an expansion portion extending along the third direction from one end of the body portion, the expansion portion surrounds the contact portion of a pair of signal terminals, a distance between two opposite shielding surfaces of the expansion portion in the second direction is defined to be a third distance, a distance between two opposite shielding surfaces of the body portion in the second direction is defined to be a fourth distance, and the third distance is larger than the fourth distance.

Further, each signal terminal in each terminal assembly is provided with a contact portion, a guide connection portion and a connection portion located between the contact portion and the guide connection portion, the insulating block is coated with a pair of connection portions, the insulating block is provided with a first insulating surface and a second insulating surface which are oppositely arranged in the second direction, an exposing groove is concavely formed from the first insulating surface of the insulating block towards the second insulating surface, the exposing groove extends along the length of the connection portion, a part of each connection portion protrudes into the exposing groove in the first direction, the other part of each connection portion is buried in the insulating block, and the width of each connection portion of each signal terminal in the first direction is smaller than the width of each contact portion in the first direction.

Further, the electrical module has a plurality of signal terminals and is arranged in parallel along the first direction, two signal terminals in each terminal module of the same electrical module are arranged in parallel along the first direction, each conductive connection part extends out of the insulating block along the second direction and is used for being welded with a substrate, each pair of conductive connection parts is covered by the corresponding shielding shell, a third direction is defined to be perpendicular to the first direction and the second direction, the conductive connection parts of the plurality of pairs of signal terminals of the same electrical module are arranged along the third direction, and the thickness of the conductive connection parts along the third direction is smaller than that of the connection parts along the third direction.

Compared with the prior art, the electric connector provided by the invention has the following beneficial effects: the plurality of terminal assemblies are accommodated in the plurality of accommodating grooves of the insulating body, so that the insulating body and the terminal assemblies are convenient to assemble and disassemble, and the damaged terminal assemblies are convenient to assemble or maintain and replace; the shielding shell of each terminal assembly covers a pair of signal terminals, so that signal crosstalk between two adjacent pairs of signal terminals is reduced; each first spoke of the shielding piece is used for mechanically contacting a plurality of shielding shells of the same electrical module, so that the shielding shells of the same electrical module can be conducted with each other, the electric potentials of the shielding shells of the same electrical module are equal, the shielding effect of the shielding shells of the same electrical module is improved, and the high-frequency performance of the electric connector is improved; the plate surface of each second spoke of the shielding piece extends along the first shielding side surface of the shielding shell corresponding to the plate surface and is in contact with the corresponding first shielding side surface and is mechanically fixed, so that the contact area between the shielding shell and the shielding piece is increased, the electric conduction between the shielding shell and the shielding piece is ensured, the high-frequency performance of the electric connector is improved, meanwhile, the second spoke can also stop the shielding shell along the first direction, and the shielding shell is prevented from being excessively displaced along the first direction and even separated from the accommodating groove; further, the shield also adds a transmission path to the ground of the shield shell so that the noise signal can be more quickly led out of the electrical connector; compared with the shielding piece provided with a plurality of first spokes, the shielding piece provided by the invention has the advantages that the side edge of each second spoke of the shielding shell is intersected and connected with at least one first spoke, so that the shielding piece is stable in structure, and the first spokes are not easy to deform.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of an electrical connector and a mating connector in an electrical connector assembly according to an embodiment of the present invention when the electrical connector and the mating connector are not mated;

fig. 2 is a schematic perspective view of an electrical connector and a mating connector in an electrical connector assembly according to an embodiment of the present invention after the mating is completed;

FIG. 3 is a cross-sectional view of an electrical connector and a mating connector in an electrical connector assembly according to an embodiment of the present invention when not mated;

FIG. 4 is a cross-sectional view of the electrical connector and the mating connector in the electrical connector assembly according to the embodiment of the present invention after the mating is completed;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a perspective view of an electrical module according to an embodiment of the invention;

FIG. 7 is an exploded view of an electrical module according to an embodiment of the invention;

FIG. 8 is an exploded view of one terminal assembly of an embodiment of the present invention;

FIG. 9 is a perspective view of one of the terminal assemblies shown in FIG. 8;

fig. 10 is a perspective view of one terminal assembly of an embodiment of the present invention from another perspective;

FIG. 11 is a cross-sectional view of the first shield and the second shield of an embodiment of the present invention when not mated and secured;

fig. 12 is a top view of a pair of signal terminals according to an embodiment of the present invention;

fig. 13 is an exploded view of a mating connector according to an embodiment of the present invention.

Reference numerals of the specific embodiments illustrate:

electric connector combination 1
				Electric connector 2	First insulating butt joint case 3	Mating end 4	Mounting end 5
Electrical module 6	Insulation body 61	First side 611	Second side 612
				Holding groove 613	First wall 6131	Second wall 6132	Side wall 6133
Spacer 614	First fixing groove 6141	Second fixing groove 6142	Groove wall 6143
				Projection 6144
Terminal assembly 7	Insulating block 71	First insulating surface 711	Second insulating surface 712
				Exposing groove 713	Signal terminal 72	Contact portion 721	Connection portion 722
Guide joint 723	Shield shell 73	Enlarged portion 731	Body portion 732
				Tail 733	Mounting portion 7331	First shield side 734	Second shield side 735
Plug portion 736	First shield 737	Contact bump 7371	First side 7372
				Second side 7373	First shielding surface 7374	Second shield 738	Third side 7381
Fourth side 7382	Second shielding surface 7383	Edges 7375, 7384	Bending section 74
				First oneNotch 741	Second notch 742	Fixing mechanism 8	Fixing hole 81
Fixing projection 82
				Screening 9	First spoke 91	Through hole 911	Second spoke 92
Side edge 921	Plate surface 922
				Butt-joint connector 10	Second insulating butt joint case 11	Butt terminal assembly 12	Insulating coating 121
Butt terminal 122	Butt-joint shielding shell 123	Grounding bar 13	Interference part 131
				First substrate 14	A second substrate 15	First distance D1	Second distance D2
Third distance D3	Fourth distance D4	Width W1, W2	Thickness T1, T2
				First direction X	Second direction Z	Third direction Y

[ detailed description ] of the invention

For a better understanding of the invention with objects, structures, features, and effects, the invention will be described further with reference to the drawings and to the detailed description.

In order to facilitate understanding of the technical scheme of the invention, an X axis in a three-dimensional coordinate axis in the drawing of the specification is defined as a first direction, a Z axis is defined as a second direction, a Y axis is defined as a third direction, and the X axis, the Y axis and the Z axis are perpendicular to each other.

Referring to fig. 1 to 4, an electrical connector assembly 1 according to an embodiment of the present invention includes an electrical connector 2 and a mating connector 10 mated with the electrical connector 2, wherein a mating end 4 of the electrical connector 2 is mated with one end of the mating connector 10 along the third direction Y, a mounting end 5 of the electrical connector 2 is connected with a first substrate 14 along the second direction Z, and the other end of the mating connector 10 is electrically connected with a second substrate 15.

Referring to fig. 1 to 5, the electrical connector 2 according to the embodiment of the invention includes a first insulating mating housing 3 and a plurality of electrical modules 6 mated with the mating connector 10. The first insulating docking housing 3 has a housing cavity (not shown), a plurality of the electrical modules 6 are stacked in sequence along the first direction X and arranged in parallel, and a plurality of the electrical modules 6 are housed in the housing cavity along the third direction Y, and each electrical module 6 includes a plurality of terminal assemblies 7 arranged in the insulating body 61 along the second direction Z.

Referring to fig. 1 to 4 and 13, the mating connector 10 according to the embodiment of the invention includes a second insulating mating shell 11, a plurality of mating terminal assemblies 12 fixed to the second insulating mating shell 11, and a plurality of grounding bars 13.

Each of the butt terminal assemblies 12 includes an insulating cover 121, two butt terminals 122 fixed to the insulating cover 121, and a butt shield case 123 covering the insulating cover 121 and the two butt terminals 122. Each of the butt terminal assemblies 12 is butted with a corresponding one of the terminal assemblies 7, specifically, the butt shield shell 123 of each of the butt terminal assemblies 12 is butted with the shield shell 73 of a corresponding one of the terminal assemblies 7, and two of the butt terminals 122 of each of the butt terminal assemblies 12 are butted with a corresponding one of the signal terminals 72 of the terminal assemblies 7. The plurality of the mating terminal assemblies 12 are arranged in a plurality of rows, the plurality of the mating terminal assemblies 12 of each row are arranged along the first direction X, each of the ground strips 13 extends along the first direction X, and the plurality of the mating shield shells 123 of each row are simultaneously contacted with a corresponding one of the ground strips 13, so that the electric potentials of the plurality of the mating shield shells 123 of the same row are equal, and the high-frequency performance of the mating connector 10 is improved. Two interference portions 131 protrude outward from two ends of each grounding bar 13 in the first direction X, and each grounding bar 13 is fixed by interference with the second insulating docking shell 11 through the two interference portions 131.

Referring to fig. 2, 5-7, in the electrical connector 2, each of the electrical modules 6 includes an insulating body 61, a plurality of terminal assemblies 7 and a shielding member 9. The insulating body 61 has a first side 611 in the first direction X and a second side 612 opposite to the first side 611, the insulating body 61 has a plurality of receiving grooves 613 and a plurality of spacing portions 614, the plurality of receiving grooves 613 are concavely provided from the first side 611 toward the second side 612 of the insulating body 61 and are arranged along the second direction Z, and the plurality of spacing portions 614 and the plurality of receiving grooves 613 are alternately provided along the second direction Z on the insulating body 61. The plurality of terminal assemblies 7 are respectively accommodated in the corresponding accommodating grooves 613, and one spacing part 614 is arranged between every two adjacent accommodating grooves 613 to separate the two adjacent terminal assemblies 7. Each of the terminal assemblies 7 includes an insulating block 71, a pair of signal terminals 72 fixed to the insulating block 71, and a shield shell 73 covering the insulating block 71 and the signal terminals 72. The shielding member 9 is adjacent to the first side 611 of the insulating body 61, and the shielding member 9 has a plurality of first spokes 91 and a plurality of second spokes 92, each of the first spokes 91 mechanically contacts the plurality of shielding shells 73 of the same electrical module 6, the plurality of second spokes 92 are respectively fixed to the plurality of shielding shells 73, and a lateral edge 921 of each of the second spokes 92 is intersected and connected with at least one of the first spokes 91. It should be noted that, in the present embodiment, each shielding member 9 has three first spokes 91, and the number of the second spokes 92 is the same as the number of the terminal assemblies 7 of each electrical module 6, but in other embodiments, the number of the first spokes 91 of the shielding member 9 is not limited to three, but may be other, and is not limited herein.

Referring to fig. 6 to 10, in each of the electrical modules 6, each of the accommodating grooves 613 has a side wall 6133 in the first direction X, and a first wall 6131 and a second wall 6132 disposed opposite to each other in the second direction Z, the shielding shell 73 of each of the terminal assemblies 7 has a first shielding side 734 and a second shielding side 735 disposed opposite to each other along the first direction X, the first shielding side 734 is exposed to the first side 611 of the insulating body 61, and the second shielding side 735 of the shielding shell 73 is limited by the side wall 6133 of the accommodating groove 613 along the first direction X. The shield 9 is shielded outside the first shield side 734 and adjacent to the first side 611 of the insulator body 61, and the plate surface 922 of each of the second spokes 92 extends along the first shield side 734 of the shield shell 73 corresponding thereto and contacts the corresponding first shield side 734. Thus, the plurality of terminal assemblies 7 of the present invention are accommodated in the plurality of accommodating grooves 613 of the insulating body 61, so that the insulating body 61 and the terminal assemblies 7 are convenient to be assembled and disassembled, thereby facilitating assembly or maintenance and replacement of damaged terminal assemblies 7; the shield shell 73 of each of the terminal assemblies 7 encloses a pair of the signal terminals 72, reducing signal crosstalk between two adjacent pairs of the signal terminals 72; each first spoke 91 of the shielding member 9 mechanically contacts the plurality of shielding shells 73 of the same electrical module 6, and can mutually conduct the plurality of shielding shells 73 of the same electrical module 6, so that the electric potentials of the plurality of shielding shells 73 of the same electrical module 6 are equal, the shielding effect of the plurality of shielding shells 73 of the same electrical module 6 is improved, and the high-frequency performance of the electrical connector 2 is improved; the plate surface 922 of each second spoke 92 of the shielding member 9 extends along the first shielding side 734 of the corresponding shielding shell 73 and is in contact with and mechanically fixed to the corresponding first shielding side 734, so that the contact area between the shielding shell 73 and the shielding member 9 is increased, the electrical conduction between the shielding shell 73 and the shielding member 9 is ensured, the high-frequency performance of the electric connector 2 is improved, and meanwhile, the second spoke 92 can also stop the shielding shell 73 along the first direction X, and the shielding shell 73 is prevented from being excessively displaced along the first direction X and even separated from the accommodating groove 613; further, the shield 9 also adds a transmission path to the ground of the shield shell 73 so that the noise signal can be more quickly led out of the electrical connector 2; in contrast to providing only a plurality of first spokes 91 on the shielding member 9, the present invention connects the side edge 921 of each of the second spokes 92 of the shielding shell 73 with at least one of the first spokes 91 in a crossing manner, so that the shielding member 9 is stable in structure and the first spokes 91 are not easy to deform. In this embodiment, the shielding shell 73 is formed by the first shielding member 737 and the second shielding member 738 in a fully enclosed tubular structure, and in other embodiments, the shielding shell 73 may be formed by only a single tubular structure, which is not limited herein.

Referring to fig. 6 to 10, in each of the electrical modules 6, one of the shielding shell 73 and the adjacent one of the spacing parts 614 is convexly provided with one or two plugging parts 736, and the other one is concavely provided with one or two first fixing grooves 6141 which are matched and fixed with the plugging parts 736, so that the shielding shell 73 can be limited by the plugging parts 736 and the first fixing grooves 6141, and the displacement of the shielding shell 73 relative to the insulating body 61 is reduced, thereby providing the structural stability of the electrical connector 2. In this embodiment, the first shielding side 734 and the second shielding side 735 of each shielding shell 73 are provided with the plugging portion 736, and the corresponding spacing portion 614 is provided with the first fixing slot 6141; in other embodiments, the plugging portion 736 may be disposed at other positions of the shielding shell 73, so long as it can mate with the first fixing slot 6141 of the spacer 614; alternatively, the insertion portion 736 may be provided in the spacer 614, and the corresponding first fixing groove 6141 may be provided in the corresponding shield shell 73, which is not limited herein. In this embodiment, the plugging portion 736 can at least limit the displacement of the shielding shell 73 in the third direction Y relative to the insulating body 61, and each of the first fixing grooves 6141 extends along the first direction X, and the plugging portion 736 of the first shielding side 734 and the plugging portion 736 of the second shielding side 735, which are located at the same position, are commonly accommodated in the same first fixing groove 6141.

Referring to fig. 6 to 10, the first shielding side 734 of each shielding shell 73 in each electrical module 6 is provided with two plugging portions 736 in a protruding manner, the two plugging portions 736 of each shielding shell 73 are respectively provided with two first fixing grooves 6141 corresponding to the corresponding spacing portions 614 along the extending direction of two first spokes 91, the plugging portions 736 of the shielding shells 73 in the same electrical module 6 are arranged along the extending direction of two first spokes 91 and are exposed to the first side 611 of the insulating body 61, and the plate 922 of at least one first spoke 91 shields and contacts the corresponding plugging portions 736 along the first direction X. Therefore, the first spoke 91 is further in contact with the insertion portion 736 of the shielding shell 73, so that the contact area between the shielding shell 73 and the shielding member 9 is increased, the electrical conduction between the shielding shell 73 and the shielding member 9 is ensured, the high-frequency performance of the electrical connector 2 is improved, and meanwhile, the first spoke 91 shields the insertion portion 736 along the first direction X, so that deformation such as bending, tilting and the like caused by exposure of the insertion portion 736 can be prevented.

Referring to fig. 5 to 9, in the same electrical module 6, three second fixing grooves 6142 are respectively formed in the spacing portion 614 between two adjacent receiving grooves 613 corresponding to three first spokes 91, each second fixing groove 6142 penetrates through the spacing portion 614 along the extending direction of the corresponding first spoke 91, a plurality of second fixing grooves 6142 are arranged along the extending direction of each first spoke 91, each first spoke 91 is received in the plurality of second fixing grooves 6142 arranged along the extending direction, and each second spoke 92 is received in the corresponding receiving groove 613. Thus, the first spoke 91 is received in the second fixing groove 6142, and the second spoke 92 is received in the receiving groove 613, thereby limiting the shielding member 9; moreover, the shielding member 9 can be embedded into the insulating body 61, so that when a plurality of terminal assemblies 7 are stacked in sequence along the first direction X, the insulating bodies 61 of two adjacent terminal assemblies 7 can closely lean against each other, and the overall structure of the electric connector 2 is improved to be compact. It should be noted that, in this embodiment, each shielding member 9 has three first spokes 91, and accordingly, in order to accommodate each first spoke 91, each spacer 614 is provided with three second fixing grooves 6142, but in other embodiments, the number of first spokes 91 of each shielding member may be other, and accordingly, the number of second fixing grooves 6142 of each spacer 614 is not limited to three, but may be other. Further, a protrusion 6144 protrudes from the groove wall surface 6143 of each second fixing groove 6142 toward the first side 611 of the insulating body 61, and each first spoke 91 is provided with a plurality of through holes 911 respectively matched and fixed with a plurality of protrusions 6144. Therefore, since the second shielding side 735 of the shielding shell 73 is limited by the side wall 6133 of the accommodating groove 613 along the first direction X, the first spoke 91 of the shielding member 9 is fixed with the protruding portion 6144 of the insulating body 61 through the through hole 911 to limit the first shielding side 734 of the shielding shell 73, so that each shielding shell 73 is clamped between the side wall 6133 of the accommodating groove 613 and the shielding member 9, the whole structure among the shielding shell 73, the shielding member 9 and the insulating body 61 is stable, the structural stability of the electric connector 2 is further improved, and the influence on the butt joint of the electric connector 2 and the butt joint connector 10 due to the unstable structure of the electric connector 2 is avoided, thereby ensuring the normal use of the electric connector 2.

Referring to fig. 7 to 11, each of the shielding shells 73 has a first shielding side 734 and a second shielding side 735 opposite to each other along the first direction X, each of the shielding shells 73 includes a first shielding member 737 and a second shielding member 738, the first shielding member 737 and the second shielding member 738 have a U-shaped structure opposite to each other, wherein the first shielding member 737 has two opposite sides, namely a first side 7372 and a second side 7373, the first shielding member 737 further includes a first shielding surface 7374, and the first shielding surface 7374 is located between the first side 7372 and the second side 7373 opposite to each other; the second shield 738 has two opposite outer sides, namely a third side 7381 and a fourth side 7382, and the second shield 738 further includes a second shield 7383, and the second shield 7383 is located between the third side 7381 and the fourth side 7382. In the present embodiment, the first side 7372 and the third side 7381 are engaged with each other by a fixing mechanism 8 to collectively form the first shield side 734 of the shield shell 73; the second side 7373 and the fourth side 7382 are engaged with each other by a fixing mechanism 8 to collectively form the second shield side 735 of the shield shell 73. The first shielding surface 7374 and the second shielding surface 7383 are disposed opposite to each other in the second direction Z, and in this embodiment, two shielding surfaces of the shielding shell 73 opposite to each other in the second direction Z are the first shielding surface 7374 and the second shielding surface 7383. The two opposite sides (i.e., the first side 7372 and the second side 7373) of the first shielding member 737 are wrapped around and fix the two opposite outer sides (i.e., the third side 7381 and the fourth side 7382) of the second shielding member 738, the two opposite sides of the first shielding member 737 and the two opposite outer sides of the second shielding member 738 are fixed by a plurality of fixing mechanisms 8, specifically, the first side 7372 and the third side 7381 are fixed by a plurality of fixing mechanisms 8, and the second side 7373 and the fourth side 7382 are fixed by a plurality of fixing mechanisms 8. The plurality of insertion portions 736 are formed protruding from edges 7375 of two opposite sides (i.e., the first side 7372 and the second side 7373) of the first shielding member 737 toward the adjacent one of the spacers 614. The plate 922 of each of the second spokes 92 shields at least one of the fixing mechanisms 8 in the first direction X, and in particular, in this embodiment, the plate 922 of the second spoke 92 shields at least one of the fixing mechanisms 8 located on the first shield side 734. In this embodiment, each of the fixing mechanisms 8 includes a fixing hole 81 provided on the first side 7372 or the second side 7373 of the first shielding member 737 and a fixing protrusion 82 provided on the third side 7381 or the fourth side 7382 of the second shielding member 738, and each of the fixing protrusions 82 is limited by the corresponding fixing hole 81, and in other embodiments, the fixing mechanism 8 may have other structures, such as a fastening mechanism (not shown), a clamping structure (not shown), and the like. Thereby, the shield shell 73 is formed by the first shield 737 and the second shield 738 of two U-shaped structures, facilitating assembly of the pair of signal terminals 72 covered by the insulating block 71 into the shield shell 73; the plate surface 922 of the second spoke 92 shields part of the fixing mechanism 8, so as to shield a gap existing at the position of the fixing mechanism 8, reduce signal leakage, and improve high-frequency performance of the electric connector 2. Further, each of the signal terminals 72, the first shielding member 737 and the second shielding member 738 are provided with a bending section 74 at the same position, a first notch 741 is concavely formed from an edge 7375 of the bending section 74 of the first shielding member 737, a second notch 742 is concavely formed from an edge 7384 of the bending section 74 of the second shielding member 738, and in this embodiment, the concave directions of the first notch 741 and the concave direction of the second notch 742 at the same position are opposite. The second notch 742 is covered by the bent section 74 of the first shield 737, and the first notch 741 is located outside the

sides

734, 735 at the bent section 74 of the second shield 738 and is not in communication with the second notch 742. Therefore, the first notch 741 can avoid forming wrinkles at the bending section 74 of the first shielding piece 737, and the second notch 742 can avoid tearing at the bending section 74 of the second shielding piece 738, which is beneficial to bending and forming the first shielding piece 737 and the second shielding piece 738; the second notch 742 is covered by the bent section 74 of the first shielding member 737, and the first notch 741 and the second notch 742 are not communicated, so that a gap can be avoided at the bent section 74 of the shielding shell 73, the signal terminals 72 can be surrounded at the position of the bent section 74, interference between two adjacent pairs of signal terminals 72 is reduced, and high-frequency performance of the electric connector 2 is improved.

Referring to fig. 7 to 11, the first shielding member 737 has a plurality of pairs of contact bumps 7371, and two contact bumps 7371 of each pair are respectively disposed on two opposite sides (i.e., a first side 7372 and a second side 7373) of the first shielding member 737 and are protruded toward each other. Defining a distance between the two contact bumps 7371 of each pair in the first direction X to have a first distance D1, defining a distance between the opposite outer sides (i.e., the third side 7381 and the fourth side 7382) of the second shield 738 in the first direction X to be a second distance D2, the first distance D1 being smaller than the second distance D2 when the first shield 737 and the corresponding second shield 738 are not fixedly mated; when the first shielding member 737 is fixed to the corresponding second shielding member 738, the two contact bumps 7371 of each pair contact the opposite

outer sides

734, 735 of the second shielding member 738, respectively, and the first distance D1 is equal to the second distance D2. With this arrangement, when the first shielding member 737 and the second shielding member 738 are fixed, each pair of the contact bumps 7371 of the first shielding member 737 has a clamping effect on the second shielding member 738, so that the first shielding member 737 and the second shielding member 738 can be better fixed, and at the same time, the contact position between the first shielding member 737 and the second shielding member 738 can be increased through the contact bumps 7371, so that the first shielding member 737 and the second shielding member 738 can be mutually conducted.

Referring to fig. 2 to 4 and fig. 7 to 10, the electrical module 6 has a plurality of signal terminals 72 disposed in parallel along the first direction X, two signal terminals 72 disposed in each of the terminal modules 7 of the same electrical module 7 are disposed in parallel along the first direction X, each of the signal terminals 72 in each of the terminal assemblies 7 has a contact portion 721, a conductive portion 723, and a connecting portion 722 disposed between the contact portion 721 and the conductive portion 723, the contact portion 721 extends from one end of the connecting portion 722 along the third direction Y and is used for contacting with the mating terminal 122 of the mating connector 10 in the second direction Z, the insulating block 71 covers the connecting portion 722 of the pair of signal terminals 72, and each of the conductive portions 723 extends from the insulating block 71 along the second direction Z for soldering with the second substrate 15. Each of the shield shells 73 has a body portion 732 received in the corresponding receiving groove 613, an enlarged portion 731 extending from one end of the body portion 732 in the third direction Y, and a tail portion 733 extending from the other end of the body portion 732 in the second direction Z, the enlarged portion 731 surrounding the contact portions 721 of the pair of signal terminals 72, a distance between two opposite shield surfaces of the enlarged portion 731 in the second direction Z being defined as a third distance D3, a distance between two opposite shield surfaces of the body portion 732 in the second direction Z being defined as a fourth distance D4, the third distance D3 being greater than the fourth distance D4, and the enlarged portion 731 of each of the shield shells 73 being in contact with the corresponding mating shield shell 123 of the mating connector 10. The shielding shell 73 in the present embodiment is formed by the first shielding member 737 having a U-shaped structure and the second shielding member 738 having a U-shaped structure being disposed opposite to each other, so that two shielding surfaces of the shielding shell 73 facing each other in the second direction Z are the first shielding surface 7374 of the first shielding member 737 and the second shielding surface 7383 of the second shielding member 738. Thereby, since the third distance D3 is greater than the fourth distance D4, the distance between the contact portion 721 and the enlarged portion 731 is increased, and the contact of the mating terminal 122 with the shield shell 73 after the mating with the signal terminal 72 is completed is prevented from being shorted; and, since the contact portion 721 of the signal terminal 72 is overlapped with the thickness of the contact portion 721 of the butt terminal 122, the impedance of the contact portion 721 of the signal terminal 72 is relatively reduced, and the enlarged portion 731 of the present invention increases the distance between the shielding shell 73 and the contact portion 721 of the signal terminal 72, so that the impedance of the contact portion 721 of the signal terminal 72 can be adjusted, and the impedance uniformity of the signal terminal 72 is improved, thereby facilitating signal transmission. Further, the tail portions 733 are located in the accommodating groove 613 and are adjacent to the mounting end 5 of the electrical connector 2, a distance between two opposite shielding surfaces of the tail portions 733 in the third direction is greater than a distance between two opposite shielding surfaces of the body portion 732 in the third direction, each pair of the conductive portions 723 is covered by the tail portions 733 of the corresponding shielding cases 73, and a plurality of mounting portions 7331 are protruding from the tail portions 733 of each shielding case 73 to be electrically connected with the first substrate 14, and a plurality of mounting portions 7331 of each shielding case 73 are located around the pair of the conductive portions 723. So configured, the tail portions 733 of the shield shell 73 can reduce signal shielding to two adjacent pairs of the conductive portions 723 and increase the distance between the shield shell 73 and the conductive portions 723, so that when the conductive portions 723 are soldered to the first substrate 14 by solder, the shield shell 73 can be prevented from coming into contact with the solder to cause the signal terminals 72 to be shorted. In the embodiment, each of the shielding cases 73 has three pairs of the mounting portions 7331, wherein two pairs of the mounting portions 7331 are respectively located at both sides of one pair of the guide portions 723 in the third direction Y, and the other two pairs of the mounting portions 7331 are respectively located at both sides of one pair of the guide portions 723 in the first direction X.

Referring to fig. 5, 7, 8 and 12, for each of the terminal assemblies 7, the insulating block 71 has a first insulating surface 711 and a second insulating surface 712 disposed opposite to each other in the second direction Z, a exposing groove 713 is concavely formed from the first insulating surface 711 toward the second insulating surface 712 of the insulating block 71, the exposing groove 713 extends by the length of the connecting portion 722, a portion of each of the connecting portions 722 protrudes into the exposing groove 713 along the first direction X, and another portion is buried in the insulating block 71, and a width W1 of the connecting portion 722 of each of the signal terminals 72 along the first direction X is smaller than a width W2 of the contact portion 721 along the first direction X. Since the width W2 of the contact portion 721 is larger and the width W1 of the connection portion 722 is smaller, the contact area between the signal terminal 72 and the mating terminal 122 is increased, and the increase of the overall structure of the electrical module 6 due to the larger overall width of the signal terminal 72 is avoided, which is beneficial to the slim design of the electrical connector 2, and since the widths of the contact portion 721 and the connection portion 722 of the signal terminal 72 are inconsistent, the impedance of the contact portion 721 and the connection portion 722 of the signal terminal 72 is inconsistent, and the smaller the width is, the larger the impedance is, so that a part of the connection portion 722 protrudes into the exposure groove 713, the air content around the connection portion 722 is increased, the impedance of the connection portion 722 is reduced, and the impedance consistency of the signal terminal 72 is improved. Further, the conductive connection portions 723 of the signal terminals 72 of the same pair of the electrical modules 6 are arranged along the third direction Y, and the thickness T2 of the conductive connection portions 723 along the third direction Y is smaller than the thickness T1 of the connection portion 722 along the third direction Y. The thickness T2 of the conductive connection portion 723 is relatively small, so that more space is available for receiving solder, and the solder of the conductive connection portion 723 is prevented from contacting each other in a small space while the conductive connection portion 723 and the first substrate 14 are firmly soldered, thereby preventing the signal transmission from being affected by shorting the signal terminals 72 together.

In summary, the electrical connector provided by the invention has the following beneficial effects:

1. the plurality of terminal assemblies 7 of the invention are accommodated in the plurality of accommodating grooves 613 of the insulating body 61, so that the insulating body 61 and the terminal assemblies 7 are convenient to assemble and disassemble, thereby facilitating the assembly or the maintenance and the replacement of damaged terminal assemblies 7; the shield shell 73 of each of the terminal assemblies 7 encloses a pair of the signal terminals 72, reducing signal crosstalk between two adjacent pairs of the signal terminals 72; each first spoke 91 of the shielding member 9 mechanically contacts the plurality of shielding shells 73 of the same electrical module 6, and can mutually conduct the plurality of shielding shells 73 of the same electrical module 6, so that the electric potentials of the plurality of shielding shells 73 of the same electrical module 6 are equal, the shielding effect of the plurality of shielding shells 73 of the same electrical module 6 is improved, and the high-frequency performance of the electrical connector 2 is improved; the plate surface 922 of each second spoke 92 of the shielding member 9 extends along the first shielding side 734 of the corresponding shielding shell 73 and is in contact with and mechanically fixed to the corresponding first shielding side 734, so that the contact area between the shielding shell 73 and the shielding member 9 is increased, the electrical conduction between the shielding shell 73 and the shielding member 9 is ensured, the high-frequency performance of the electric connector 2 is improved, and meanwhile, the second spoke 92 can also stop the shielding shell 73 along the first direction X, and the shielding shell 73 is prevented from being excessively displaced along the first direction X and even separated from the accommodating groove 613; further, the shield 9 also adds a transmission path to the ground of the shield shell 73 so that the noise signal can be more quickly led out of the electrical connector 2; in contrast to providing only a plurality of first spokes 91 on the shielding member 9, the present invention connects the side edge 921 of each of the second spokes 92 of the shielding shell 73 with at least one of the first spokes 91 in a crossing manner, so that the shielding member 9 is stable in structure and the first spokes 91 are not easy to deform.

2. The first spokes 91 are in contact with the inserting portion 736 of the shielding shell 73, so that the contact area between the shielding shell 73 and the shielding member 9 is increased, the electrical conduction between the shielding shell 73 and the shielding member 9 is ensured, the high-frequency performance of the electric connector 2 is improved, and meanwhile, the first spokes 91 shield the inserting portion 736 along the first direction X, and deformation such as bending, tilting and the like caused by exposure of the inserting portion 736 can be prevented.

3. Since the second shielding side 735 of the shielding shell 73 is limited by the side wall 6133 of the accommodating groove 613 along the first direction X, the first spoke 91 of the shielding member 9 is fixed with the protruding portion 6144 of the insulating body 61 through the through hole 911 to limit the first shielding side 734 of the shielding shell 73, so that each shielding shell 73 is clamped between the side wall 6133 of the accommodating groove 613 and the shielding member 9, the whole structure among the shielding shell 73, the shielding member 9 and the insulating body 61 is stable, the structural stability of the electric connector 2 is further improved, and the influence on the butt joint of the electric connector 2 and the butt joint connector 10 due to the unstable structure of the electric connector 2 is avoided, so that the normal use of the electric connector 2 is ensured.

4. Forming the shield shell 73 by the first shield 737 and the second shield 738 of two U-shaped structures facilitates assembling the pair of signal terminals 72 covered by the insulating block 71 into the shield shell 73; the plate surface 922 of the second spoke 92 shields part of the fixing mechanism 8, so as to shield a gap existing at the position of the fixing mechanism 8, reduce signal leakage, and improve high-frequency performance of the electric connector 2.

5. The first notch 741 can avoid forming wrinkles at the bending section 74 of the first shielding piece 737, and the second notch 742 can avoid tearing at the bending section 74 of the second shielding piece 738, which is beneficial to bending and forming the first shielding piece 737 and the second shielding piece 738; the second notch 742 is covered by the bent section 74 of the first shielding member 737, and the first notch 741 and the second notch 742 are not communicated, so that a gap can be avoided at the bent section 74 of the shielding shell 73, the signal terminals 72 can be surrounded at the position of the bent section 74, interference between two adjacent pairs of signal terminals 72 is reduced, and high-frequency performance of the electric connector 2 is improved.

6. When the first shielding member 737 and the second shielding member 738 are fixed, each pair of the contact protruding points 7371 of the first shielding member 737 plays a role of clamping the second shielding member 738, so that the first shielding member 737 and the second shielding member 738 are better fixed, and meanwhile, the contact position between the first shielding member 737 and the second shielding member 738 can be increased through the contact protruding points 7371, and the first shielding member 737 and the second shielding member 738 can be ensured to be conducted mutually.

7. The width W2 of the contact portion 721 of the signal terminal 72 is larger, and the width W1 of the connection portion 722 is smaller, so that the contact area between the signal terminal 72 and the mating terminal 122 is increased, and the overall structure of the electrical module 6 is prevented from being increased due to the larger overall width of the signal terminal 72, which is beneficial to the design of the electrical connector 2 for being slim and light, and a part of the connection portion 722 protrudes into the exposure groove 713, so that the air content around the connection portion 722 is increased, the impedance of the connection portion 722 is reduced, and the impedance uniformity of the signal terminal 72 is improved.

The above detailed description is merely illustrative of the preferred embodiments of the invention and is not intended to limit the scope of the invention, so that all equivalent technical changes that can be made by the present specification and illustrations are included in the scope of the invention.

Claims

1. An electrical connector, comprising at least one electrical module, the electrical module comprising:

an insulating body having a first side and a second side disposed opposite to each other in a first direction, a plurality of receiving grooves concavely disposed from the first side toward the second side of the insulating body and arranged along a second direction perpendicular to the first direction;

The terminal assemblies are respectively accommodated in the corresponding accommodating grooves, each terminal assembly comprises an insulating block, a pair of signal terminals fixed on the insulating block and a shielding shell covering the insulating block and the signal terminals, and each shielding shell is provided with a first shielding side surface exposed to the first side;

the shielding piece is shielded on the outer side of the first shielding side face and is adjacent to the first side, the shielding piece is provided with a plurality of first spokes and a plurality of second spokes, each first spoke is in mechanical contact with a plurality of shielding shells positioned on the same electrical module, the plurality of second spokes are respectively fixed with the plurality of shielding shells correspondingly, the side edge of each second spoke is intersected and connected with at least one first spoke, and the plate surface of each second spoke extends along the first shielding side face of the corresponding shielding shell and is in contact with the corresponding first shielding side face.

2. The electrical connector of claim 1, wherein the insulative housing has a plurality of spacers, the spacers and the receiving slots are alternately arranged on the insulative housing along the second direction, one spacer is arranged between each two adjacent receiving slots to space the two adjacent shielding shells, one of each shielding shell and one of the spacers adjacent to the shielding shell is provided with at least one plug-in portion, and the other recess is provided with at least one first fixing slot for being matched and fixed with the plug-in portion.

3. The electrical connector of claim 2, wherein the first shielding side of each shielding shell is provided with the plugging portion along the extending direction of at least one first spoke, the corresponding spacing portion is provided with the first fixing groove, the plugging portions of the shielding shells located in the same electrical module are arranged along the extending direction of at least one first spoke and are exposed to the first side of the insulating body, and the plate surface of at least one first spoke is shielded along the first direction and contacts the corresponding plugging portion.

4. The electrical connector of claim 1, wherein the insulating body has a spacer portion between every two adjacent receiving slots, each of the spacer portions is provided with a plurality of second fixing slots corresponding to a plurality of first spokes, each of the second fixing slots penetrates through the spacer portion along the extending direction of the corresponding first spoke, a plurality of second fixing slots are arranged along the extending direction of each first spoke, each of the first spokes is received in the plurality of second fixing slots arranged along the extending direction of the first spoke, and each of the second spokes is received in the corresponding receiving slot.

5. The electrical connector of claim 4, wherein each of the shielding shells has a second shielding side opposite to the first shielding side, each of the second shielding sides is limited by a corresponding sidewall of the receiving slot along the first direction, a protruding portion protrudes from a sidewall of each of the second fixing slots toward the first side of the insulating body, and each of the first spokes has a plurality of through holes respectively engaged with the protruding portions.

6. The electrical connector of claim 1, wherein each of the shield shells includes a first shield and a second shield, the sides of the first shield and the sides of the second shield being secured by a plurality of securing mechanisms, the face of each of the second spokes shielding at least one of the securing mechanisms in the first direction.

7. The electrical connector of claim 6, wherein in the same terminal assembly, the first shielding member and the second shielding member are in two opposite U-shaped structures, opposite sides of the first shielding member are covered and fixed on opposite outer sides of the second shielding member, each of the signal terminals, the first shielding member and the second shielding member is provided with a bending section at the same position, a first notch is concavely formed from edges of the bending section of the first shielding member, a second notch is concavely formed from edges of the bending section of the second shielding member, the second notch is covered by the bending section of the first shielding member, and the first notch is located outside the side of the bending section of the second shielding member and is not communicated with the second notch.

8. The electrical connector of claim 7, wherein the first shield member has a plurality of pairs of contact bumps, the two contact bumps of each pair being disposed on opposite sides of the first shield member and protruding toward each other, a distance between the two contact bumps of each pair in the first direction being defined as a first distance, a distance between the opposite sides of the second shield member in the first direction being defined as a second distance, the first distance being less than the second distance when the first shield member and the corresponding second shield member are not mated and secured; when the first shielding piece and the corresponding second shielding piece are fixed, the two contact protruding points of each pair are respectively contacted with the opposite outer side surfaces of the second shielding piece, and the first distance is equal to the second distance.

9. The electrical connector of claim 1, wherein a third direction is defined perpendicular to the first direction and the second direction, each pair of the signal terminals is arranged side by side along the first direction, each signal terminal has a contact portion, a conductive portion, and a connecting portion between the contact portion and the conductive portion, the contact portion extends from one end of the connecting portion along the third direction and is configured to contact a mating terminal of a mating connector in the second direction, each shield shell has a body portion received in the corresponding receiving groove and an enlarged portion extending from one end of the body portion along the third direction, the enlarged portion surrounds the contact portion of a pair of the signal terminals, a distance between two opposing shield surfaces of the enlarged portion in the second direction is defined as a third distance, a distance between two opposing shield surfaces of the body portion in the second direction is defined as a fourth distance, and the third distance is greater than the fourth distance.

10. The electrical connector of claim 1, wherein each of said signal terminals in each of said terminal assemblies has a contact portion, a lead portion, and a connecting portion between said contact portion and said lead portion, said insulating block encloses a pair of said connecting portions, said insulating block has first and second insulating surfaces disposed opposite each other in said second direction, a recess is recessed from said first insulating surface toward said second insulating surface of said insulating block to form a recess extending along a length of said connecting portion, a portion of each of said connecting portions projects into said recess in said first direction, and another portion is buried in said insulating block, and a width of said connecting portion of each of said signal terminals in said first direction is smaller than a width of said contact portion in said first direction.

11. The electrical connector of claim 10, wherein the electrical module has a plurality of signal terminals arranged in parallel along the first direction, two signal terminals in each of the terminal assemblies of the same electrical module are arranged in parallel along the first direction, each of the conductive portions extends out of the insulating block along the second direction to be soldered to a substrate, each pair of the conductive portions is covered by the corresponding shielding shell, a third direction is defined to be perpendicular to the first direction and the second direction, the conductive portions of the plurality of pairs of signal terminals of the same electrical module are arranged along the third direction, and a thickness of the conductive portions along the third direction is smaller than a thickness of the connecting portion along the third direction.