CN218677855U

CN218677855U - Electric connector and connecting assembly

Info

Publication number: CN218677855U
Application number: CN202222689353.XU
Authority: CN
Inventors: 郑耀龄; 周伯叡; 金左峰
Original assignee: Lotes Co Ltd
Current assignee: Lotes Co Ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-03-21
Anticipated expiration: 2032-10-12

Abstract

The utility model discloses an electric connector and coupling assembling, include: the conductive terminals are arranged in rows along an arrangement direction and comprise a ground terminal and two signal terminals which are respectively positioned at two sides of the ground terminal along the arrangement direction, the ground terminal is provided with a ground contact part, a ground lead-in part and a ground main body part, and the signal terminals are provided with a signal contact part, a signal lead-in part and a signal main body part; the grounding main body part is provided with two outer edges, the outer edges of the grounding main body part are provided with a plurality of adjusting structures, each adjusting structure comprises a groove and a convex part, the working wavelength of a signal transmitted by the signal terminal is defined as lambda, the length of the adjusting structure is defined as d, and the d is less than lambda. This application can pass through adjust the structure and improve ground terminal's shielding isolation effect, reduce the crosstalk between two signal terminal.

Description

Electric connector and connecting assembly

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector, and more particularly, to an electrical connector and a connecting assembly for improving crosstalk.

[ background of the invention ]

A conventional electrical connector includes an insulative housing and a plurality of conductive terminals, which include a plurality of differential pairs and a plurality of ground terminals arranged in rows. A ground terminal is usually provided between two adjacent differential pairs to isolate the two adjacent differential pairs from ground, so as to reduce crosstalk between the two adjacent differential pairs. To further reduce the crosstalk between different differential pairs, shielding structures such as metal shielding plates are usually provided to further shield the different differential pairs or to increase the distance between the different differential pairs. However, this has a great influence on the spatial layout of the internal structures of the electrical connector, which is not favorable for the miniaturization design of the electrical connector.

Therefore, there is a need for a new electrical connector and connecting assembly to overcome the above problems.

[ Utility model ] content

The utility model discloses an author aim at provides an electric connector and coupling assembling, set up a plurality of regulation structures through the outward flange at ground terminal, let the electric current in the circuitous transmission of route of ground terminal's outward flange, can adjust mutual inductance between ground terminal and the signal terminal and mutual inductance between two signal terminals and mutual holding, and the length of adjusting the structure is less than the operating wavelength of signal terminal transmission signal moreover, make the coupling volume of adjusting structure and signal terminal little, restrain the interpenetration of electromagnetic field between the signal terminal of both sides, shield the isolation to signal terminal effectively. The technical scheme of this application sets up at the outward flange of ground terminal originally the structure is adjusted, and is very little to electric connector's spatial layout influence.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an electrical connector, comprising: the conductive terminals are arranged in a row along an arrangement direction, each conductive terminal comprises at least one grounding terminal and two signal terminals which are respectively positioned at two sides of the corresponding grounding terminal along the arrangement direction, each grounding terminal is provided with a grounding contact part, a grounding conducting part and a grounding main body part which is connected with the corresponding grounding contact part and the corresponding grounding conducting part, and each signal terminal is provided with a signal contact part, a signal conducting part and a signal main body part which is connected with the corresponding signal contact part and the corresponding signal conducting part; the grounding main body part is provided with two outer edges which are oppositely arranged along the arrangement direction, at least one outer edge of the grounding main body part is provided with a plurality of adjusting structures which are continuously arranged, each adjusting structure comprises a groove and a convex part, the working wavelength of a signal transmitted by the signal terminal is defined as lambda, the length of the adjusting structure is defined as d, and the lambda is smaller than the d.

Furthermore, the electrical connector comprises an insulating block for fixing a plurality of conductive terminals, the signal main body part is provided with a signal fixing part fixed on the insulating block and a signal exposure part extending out of the insulating block, and the grounding main body part is provided with a grounding fixing part fixed on the insulating block and a grounding exposure part extending out of the insulating block; the grounding exposure parts are positioned between the two signal exposure parts along the arrangement direction, and the grounding exposure parts are provided with the adjusting structures.

Further, the ground fixing portion is provided with the adjusting structure, the width of the groove of the adjusting structure defining the ground exposing portion along the arrangement direction is a first width, the width of the groove of the adjusting structure defining the ground fixing portion along the arrangement direction is a second width, and the first width is greater than the second width.

Furthermore, the conductive terminals include a plurality of ground terminals and a plurality of differential pairs, each differential pair includes two signal terminals disposed adjacently, at least one ground terminal is disposed between two adjacent differential pairs, and a distance between two signal fixing portions of each differential pair along the arrangement direction is greater than a distance between two signal exposure portions thereof along the arrangement direction.

Furthermore, the electrical connector further comprises a grounding member, the grounding member comprises a main body portion and a plurality of groups of shielding portions extending from the main body portion, the main body portion is provided with a plurality of clamping holes, each clamping hole is aligned with a gap between two signal fixing portions corresponding to one differential pair when viewed in the thickness direction of the main body portion of the grounding member, the insulating block is provided with a plurality of clamping columns, and the plurality of clamping columns and the plurality of clamping holes are matched and fixed with each other; every group the shielding part includes a first shielding part and a second shielding part, each the card hole is located and corresponds a set of the shielding part first shielding part with between the second shielding part, first shielding part certainly the main part orientation the direction of signal exposure portion extends, second shielding part certainly the main part orientation the direction of signal connection portion extends.

Further, d is less than lambda/4.

Furthermore, the grounding main body part is provided with a grounding extension part connected with the grounding conductive part, a grounding bending part bent and extended from the grounding extension part, and a grounding elastic arm extended from the grounding bending part, and the grounding elastic arm is connected with the grounding contact part; the signal main body part is provided with a signal extension part connected with the signal guide connection part, a signal bending part bent and extended from the signal extension part and a signal elastic arm extended from the signal bending part, and the signal elastic arm is connected with the signal contact part; the ground bending part and the signal bending part are aligned along the arrangement direction, and the adjusting structure continuously extends from the outer edge of the ground elastic arm to the outer edge of the ground extension part.

Furthermore, the electrical connector further includes a grounding member, the grounding member includes a main body portion and a plurality of first contact arms extending from the main body portion, each of the first contact arms is in contact with a corresponding one of the grounding bent portions, and the outer edge of the grounding bent portion is provided with the groove.

Furthermore, the grounding main body part is provided with a grounding extension part connected with the grounding conductive part, a grounding bending part bent and extended from the grounding extension part, and a grounding elastic arm extended from the grounding bending part, the grounding elastic arm is connected with the grounding contact part, and the grounding extension part is provided with a plurality of adjusting structures; the electrical connector further includes a grounding member, the grounding member includes a main body portion and a plurality of sets of contact arms extending from the main body portion, each set of contact arms includes a first contact arm and a second contact arm contacting the same grounding terminal, wherein along an extending direction of the grounding extension portion, the first contact arm and the second contact arm of the same set extend beyond two ends of the plurality of adjustment structures located at the grounding extension portion, respectively.

In order to achieve the above object, the utility model discloses still adopt another kind of technical scheme: a connecting assembly comprises a circuit board, a resistor and the electric connector, wherein the electric connector and the resistor are both arranged on the circuit board, the resistor is connected with a grounding path of the circuit board, and a grounding terminal of the electric connector is connected with the resistor through the grounding path.

Compared with the prior art, the utility model provides a pair of electric connector and coupling assembling has following beneficial effect:

by arranging a plurality of adjusting structures at the outer edge of the grounding terminal, each adjusting structure is provided with a groove and a convex part, so that current is transmitted in a roundabout way at the outer edge of the grounding terminal, mutual inductance and mutual capacitance between the grounding terminal and the signal terminal and mutual inductance between the signal terminals at two sides of the grounding terminal can be adjusted, thus, the capacitance and the inductance in the overall equivalent circuit relationship formed by the grounding terminal and the signal terminal are subjected to strength change for multiple times, the phase speed difference of the odd-even mode of the two signal terminals is reduced (the larger the phase speed difference of the odd-even mode of the two signal terminals is, the larger the crosstalk between the two signal terminals is), the crosstalk generated by parasitic elements (parasitic capacitance and parasitic inductance) existing between the two signal terminals in the equivalent circuit is reduced, and the length of the adjusting structure is smaller than the working wavelength of signals transmitted by the signal terminals, so that the coupling amount of the adjusting structures and the signal terminals is small, the mutual shielding of electromagnetic fields between the signal terminals at two sides is inhibited, and the signal terminals are effectively isolated. The utility model provides a technical scheme sets up at the outward flange of the ground terminal originally the structure is adjusted, and is very little to electric connector's spatial layout influence, the miniaturized design of electric connector of being convenient for.

In addition, the above technical solutions and technical effects of the present application are unexpected for those skilled in the art, for the following reasons:

(1) In the art, in order to reduce crosstalk between two signal terminals, the industry is generally optimized from the viewpoint of increasing the area of the metal shielding structure between the two signal terminals, or shortening the distance between the metal shielding structure and the signal terminals, or putting more ground terminals between the two signal terminals, or increasing the distance between the two signal terminals, for example, chinese patents CN02295247.0, CN201320367712.8, CN201711017265.2, and CN201710724581.7. With the subsequent development, the electrical connector tends to be miniaturized, has a limited volume, is inconvenient to adopt these means to improve crosstalk, and provides new challenges to the assembly of the metal shielding structure, the process or the mechanical performance of the contact stabilization, and the like. At present, because the conductive plastic can be injection molded with other structures through a molding process, which is convenient for achieving the required mechanical properties, and the molded conductive plastic occupies a part of the original space of the insulating body, and the additional added space is small, the conductive plastic is considered to replace the metal shielding structure, for example, chinese patents cn201611154542 x and CN201710680718.3, and no change of the shape of the ground terminal is contemplated to improve the crosstalk problem of the electrical connector.

(2) In the art, the following means and purposes are generally provided for providing the concave-convex structure on the terminal:

firstly, let terminal and other structures reciprocal anchorage, realize stable connection. For example, the terminals in a row are provided with interference parts with concave-convex arranged outer edges to be held by the interference parts and the insulation blocks in an interference mode, such as chinese patents CN202110603372.3, CN201920745960.9 and CN201810367602.9.

Secondly, because the surrounding environmental factors of each region of the signal terminal may be different, the transmission indexes such as impedance, transmission rate, loss and the like of each region of the signal terminal may be different, and the overall transmission performance of the electrical connector is affected. When it is desired to change the impedance of a region on the signal terminal, one skilled in the art can adjust the impedance by changing the shape of the region, the surrounding medium, the distance from the ground structure, and the like. Among them, providing a concave-convex structure on the outer edge of the region is one of ways to adjust the impedance by changing the shape of the signal terminal, for example, chinese patent CN201521073279.2. In addition, since the shape of the signal terminal affects the impedance, loss, transmission rate of the signal terminal, the matching relationship between the signal terminal and other structures, and the like, after the shape of the signal terminal is changed, although a certain index can be adjusted, other transmission indexes originally meeting design requirements are easily changed to be not met, and it is difficult to meet all transmission indexes of the electrical connector. Therefore, changing the shape of the signal terminals can easily increase the design difficulty of the technician for the overall transmission performance of the electrical connector, and the industry generally adopts a straight structure to minimize the shape/width change of the signal terminals, for example, chinese patents CN201110083019.3 and CN202110150881.5. For the convenience of manufacturing and molding, the ground terminal tends to be designed to have a straight structure as the signal terminal, and usually a plurality of signal terminals and a plurality of ground terminals are molded on one sheet at the same time.

In summary, in order to improve the crosstalk problem, those skilled in the art have focused on the structure of the signal terminals themselves, the positional relationship between two interfering signal terminals or two differential pairs, and the area and number of shielding structures made of different materials, and have not thought to improve the crosstalk of the signal terminals by providing the outer edge shape of the ground terminal. Further, the design concepts of providing the concave-convex structure on the terminal to form the interference portion, providing the concave-convex structure on the signal terminal to adjust the impedance, and minimizing the shape change of the signal terminal and the ground terminal are well established in the thought of those skilled in the art, and at the same time, the ground terminal plays a role of ground shielding, does not transmit signal data, and is not concerned by the industry, so that it is difficult for those skilled in the art to think that the adjustment structure of the present application is applied to the outer edge of the ground terminal to improve the crosstalk problem between the two signal terminals.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of an electrical connector, a circuit board, a resistor, and a docking card provided in an embodiment of the present invention when not connected;

fig. 2 is an exploded perspective view of an electrical connector according to an embodiment of the present invention;

fig. 3 is a perspective view of a portion of conductive terminals in one of the terminal assemblies according to an embodiment of the present invention;

fig. 4 is a schematic plan view of a portion of conductive terminals according to an embodiment of the present invention, viewed along a first direction;

fig. 5 is a plan sectional view of a portion of a conductive terminal secured to an insulator block, as viewed in a first direction, in accordance with an embodiment of the present invention;

fig. 6 is a schematic plan view of a portion of a ground member and a portion of a conductive terminal of an embodiment of the present invention viewed along a first direction;

fig. 7 is a partial perspective view of a portion of the conductive terminal and the grounding member according to an embodiment of the present invention.

Detailed description of the embodiments reference is made to the accompanying drawings in which:

electrical connector 100
				Metal housing 1	Insulating body 2	Terminal assembly 3	Conductive terminal 31
Signal terminal 311	Signal contact portion 3111	Signal main body portion 3112	Signal exposure part 3113
				Signal fixing part 3114	Signal elastic arm 3115	Signal bending part 3116	Signal extension portion 3117
Signal lead-in part 3118
				Ground terminal 312	Ground contact portion 3121	Ground main body portion 3122	Grounding exposure portion 3123
Ground fixing portion 3124	Grounding elastic arm 3125	Grounding bent portion 3126	Ground extension 3127
				Ground connection 3128	Adjustment structure 313	Groove 3131	Convex part 3132
Insulating block 32	Clamp column 321
				Grounding piece 4	Main body 41	First contact arm 42	Second contact arm 43
First shield part 44	Second shield part 45	Card hole 46
				Circuit board 200	Ground path 201	Docking card 300	Resistor 400
First pitch P1	Second pitch P2	First width W1	Second width W2
				First direction X	Second direction Y	Third direction Z

[ detailed description ] embodiments

For better understanding of the objects, structures, features, and functions of the present invention, reference should now be made to the drawings and detailed description of the invention.

In order to understand the technical scheme of the utility model more conveniently, X axle definition in the three-dimensional coordinate axis in the specification attached drawing is first direction, and Y axle definition is the second direction, and Z axle definition is the third direction, two liang of mutually perpendicular between X axle, Y axle and the Z axle.

Referring to fig. 1 and fig. 2, an electrical connector 100 according to the present invention is illustrated, wherein the electrical connector 100 is fixed to a circuit board 200 and is mated with a mating card 300 along a third direction Z. The electrical connector 100 includes a metal housing 1, an insulating body 2, two terminal assemblies 3 and two ground members 4. The insulating body 2 has a slot for receiving the docking card 300. Each of the terminal assemblies 3 includes an insulating block 32 and a plurality of conductive terminals 31, the conductive terminals 31 of each terminal assembly 3 are arranged in a row along the second direction Y and fixed to the insulating block 32, each of the ground members 4 is fixed to a corresponding one of the insulating blocks 32, and the two ground members 4 and the two terminal assemblies 3 are assembled in the insulating body 2. The conductive terminals 31 of the two terminal assemblies 3 are arranged in two rows and are respectively located on two sides of the slot along the first direction X. The metal shell 1 is located outside the insulating body 2 and fixed to the circuit board 200. It should be noted that, in the present embodiment, the arrangement direction of the plurality of conductive terminals 31 in each terminal assembly 3 is the second direction Y.

Referring to fig. 2 and 3, for each of the terminal assemblies 3, the conductive terminals 31 include a plurality of differential pairs and a plurality of ground terminals 312 arranged along the second direction Y, each of the differential pairs includes two signal terminals 311 disposed adjacently, and one of the ground terminals 312 is disposed between two adjacent differential pairs. Each of the signal terminals 311 has a signal contact portion 3111, a signal conducting portion 3118, and a signal main portion 3112 connecting the signal contact portion 3111 and the signal conducting portion 3118, and the signal main portion 3112 has a signal fixing portion 3114 fixed to the insulating block 32 and a signal exposing portion 3113 extending out of the insulating block 32. Each of the ground terminals 312 has a ground contact portion 3121, a ground connection portion 3128, and a ground main portion 3122 connecting between the ground contact portion 3121 and the ground connection portion 3128, and the ground main portion 3122 has a ground fixing portion 3124 fixed to the insulation block 32 and a ground exposing portion 3123 extending out of the insulation block 32. The ground contact portion 3121 and the signal contact portion 3111 are both configured to contact the docking card 300, and the ground connection portion 3128 and the signal connection portion 3118 are both configured to be connected to the circuit board 200.

Referring to fig. 3 and 4, the grounding main body 3122 has two outer edges oppositely disposed along the second direction Y, the outer edges have a plurality of adjusting structures 313 arranged in series, and each adjusting structure 313 includes a concave groove 3131 and a convex portion 3132. Defining the length of the adjusting structure 313 as d, and defining the working wavelength of the signal transmitted by the signal terminal 311 as lambda, wherein d < lambda. It should be noted that the present invention is not limited to that all the adjusting structures 313 on the outer edge are continuously arranged, as long as there are a plurality of adjusting structures 313 continuously arranged therein, for example, if there are Q adjusting structures 313 on one of the outer edges, Q adjusting structures 313 may be continuously arranged all the time, or K adjusting structures 313 in Q adjusting structures 313 may be continuously arranged, and the other (Q-K) adjusting structures 313 are spaced from the K adjusting structures 313, where Q > K ≧ 2. The signal main body part is not provided with the adjusting structure.

The present application can adjust the mutual inductance and the mutual capacitance between the ground terminal 312 and the signal terminal 311 and the mutual inductance between the signal terminals 311 on both sides of the ground terminal 312 by arranging a plurality of adjusting structures 313 on the outer edge of the ground terminal 312 and arranging the grooves 3131 and the protrusions 3132 on the adjusting structures 313, so that the capacitance and the inductance in the overall equivalent circuit relationship formed by the ground terminal 312 and the signal terminal 311 are subjected to strong and weak changes for a plurality of times, the phase speed difference of the odd-even mode of the two signal terminals 311 is reduced (the larger the phase speed difference of the odd-even mode of the two signal terminals 311 is, the larger the crosstalk between the two signal terminals 311 is), the crosstalk generated by the parasitic elements (parasitic capacitance and parasitic inductance) existing between the two signal terminals 311 in the equivalent circuit is reduced, and the length of the adjusting structures 313 is smaller than the operating wavelength of the signal transmitted by the signal terminals 311, so that the amount of the adjusting structures 313 and the signal terminals 311 is small, the mutual permeation between the signal terminals 311 on both sides is suppressed, and the electromagnetic field terminals are effectively shielded. According to the technical scheme, the adjusting structure 313 is arranged on the outer edge of the original grounding terminal 312, so that the influence on the spatial layout of the electric connector 100 is small, and the miniaturization design of the electric connector 100 is facilitated. Preferably, the plurality of adjustment structures 313 are uniform in length and are arranged in a periodic, continuous manner.

Referring to fig. 3 to 5, for the ground terminal 312 located between the two signal terminals 311 along the second direction Y, the ground exposed portion 3123 is located between the two signal exposed portions 3113 along the second direction Y, and the ground exposed portion 3123 is provided with the adjustment structure 313. Because signal fixing part 3114 is by the insulating block 32 cladding is fixed, and the dielectric constant of air is less than insulating material's dielectric constant, and the air is lower to electromagnetic interference's separation effect, so two of ground terminal 312 both sides more easily through air mutual transmission electromagnetic interference between signal exposure portion 3113, the utility model discloses a ground exposure portion 3123 sets up adjust structure 313, can be for originally changing two of mutual interference signal exposure portion 3113 keeps apart the interference, improves more effectively electric connector 100's crosstalk.

Further, the ground fixing portion 3124 is also provided with the adjusting structure 313, a width of the groove 3131 of the adjusting structure 313 defining the ground exposing portion 3123 in the arrangement direction is a first width W1, a width of the groove 3131 of the adjusting structure 313 defining the ground fixing portion 3124 in the arrangement direction is a second width W2, and the first width W1 is greater than the second width W2. Due to the difference in dielectric constant between the insulating material and the air, the capacitance between the signal fixing portion 3114 and the ground fixing portion 3124 may be greater than the capacitance between the signal exposure portion 3113 and the ground exposure portion 3123. This application makes through W1> W2, make signal fixed part 3114 with the interval between ground fixed part 3124 is great in order to reduce the electric capacity between the two, signal exposure portion 3113 with the interval between ground exposure portion 3123 is less in order to increase the electric capacity between the two, reduces signal exposure portion 3113 with the electric capacity size difference of signal fixed part 3114, improves the impedance uniformity of signal terminal 311 is favorable to the signal transmission of signal terminal 311. In addition, the holding force between the ground fixing portion 3124 and the insulation block 32 can be strengthened by the groove 3131 and the protrusion 3132 of the adjusting structure 313, so that the risk of the ground terminal 312 being detached from the insulation block 32 is reduced.

Further, in this embodiment, one ground terminal 312 is disposed between two adjacent differential pairs, and a distance (i.e., the second distance P2) between two signal fixing portions 3114 of each differential pair along the arrangement direction (i.e., the second direction Y in this embodiment) is greater than a distance (i.e., the first distance P1) between two signal exposing portions 3113 of each differential pair along the arrangement direction. Since the signal fixing portion 3114 is in an insulating material, the impedance of the signal fixing portion 3114 may be lower than that of the signal exposing portion 3113 in the air. This application is through setting up P1< P2, dwindles distance P1 between signal exposure portion 3113 for two of difference pair signal exposure portion 3113 tight coupling adjusts signal exposure portion 3113's electric capacity makes up signal exposure portion 3113 with the impedance size difference that signal fixed part 3114 causes because of the dielectric constant difference of surrounding material can be dwindled signal exposure portion 3113 with the impedance size difference of signal fixed part 3114 is favorable to the impedance uniformity of signal terminal 311. In addition, due to the close coupling between the two signal exposure portions 3113 of the differential pairs, the field strength of the signal exposure portion 3113 is larger than that of the signal fixing portion 3114, that is, the signal interference between the signal exposure portions 3113 of the two differential pairs is more, and the adjustment structure 313 can effectively isolate the signal exposure portions 3113 through the ground exposure portion 3123, so that the signal interference between two adjacent differential pairs can be effectively reduced.

Referring to fig. 2, 6 to 7, the ground member 4 includes a main body portion 41 and a plurality of shielding portions extending from the main body portion 41, the main body portion 41 is provided with a plurality of fastening holes 46, when viewed along a thickness direction of the main body portion 41 of the ground member 4, each fastening hole 46 is aligned with a gap between two signal fixing portions 3114 of a corresponding differential pair, the insulating block 32 is provided with a plurality of fastening posts 321, and the fastening posts 321 and the fastening holes 46 are fixed to each other in a matching manner. Each set of the shielding parts includes a first shielding part 44 and a second shielding part 45, each of the card holes 46 is located between the first shielding part 44 and the second shielding part 45 of the corresponding set of the shielding parts, the first shielding part 44 extends from the main body part 41 toward the signal exposure part 3113, and the second shielding part 45 extends from the main body part 41 toward the signal guide part 3118. The mutual positioning between the grounding member 4 and the insulating block 32 is realized by the card hole 46 and the card column 321, and in addition, since the distance between the two signal fixing portions 3114 of the differential pair is larger, a larger gap exists, and the card hole 46 is aligned with the gap, the facing area of the signal fixing portion 3114 and the card hole 46 can be reduced, so that more area of the signal fixing portion 3114 is shielded by the material of the main body portion 41. Meanwhile, since the signal exposure portion 3113 is exposed in the air and is susceptible to external interference, the signal guide portion 3118 is in contact with other elements, the interference of the intensive magnetic field and the outward emission is more, the present application passes through the first shielding portion 44 and the second shielding portion 45 are respectively close to the signal exposure portion 3113 and the signal guide portion 3118, the shielding is strengthened to the interference signal, and the signal shielding effect of the electrical connector 100 is improved. In this embodiment, the thickness direction of the main body portion 41 of the grounding member 4 is the first direction X of this embodiment. In this embodiment, the ground exposing portion 3123 and the ground fixing portion 3124 are provided with the adjusting structure 313, the first shielding portion 44 and the second shielding portion 45 increase the area of the ground member 4, and more second shielding materials can absorb the electromagnetic field around the adjusting structure 313, so as to reduce the resonance.

Referring to fig. 3, 6 and 7, the grounding main body 3122 is provided with a grounding extension portion 3127 connected to the grounding contact portion 3121, a grounding bending portion 3126 bent and extended from the grounding extension portion 3127, and a grounding elastic arm 3125 extended from the grounding bending portion 3126, wherein the grounding elastic arm 3125 is connected to the grounding contact portion 3121. The signal body 3112 is provided with a signal extension portion 3117 connected to the signal guide portion 3118, a signal bending portion 3116 bent and extended from the signal extension portion 3117, and a signal elastic arm 3115 extended from the signal bending portion 3116, and the signal elastic arm 3115 is connected to the signal contact portion 3111. The ground bending portion 3126 and the signal bending portion 3116 are aligned along the second direction Y, and the adjusting structure 313 continuously extends from an outer edge of the ground elastic arm to an outer edge of the ground extending portion 3127. Because of the bending shape of the signal bending portion 3116, the field intensity density at the signal bending portion 3116 and the connection position near the signal bending portion 3116 is relatively concentrated, and the interference of the externally emitted signal is relatively large, the present application makes the adjusting structure 313 continuously extend from the outer edge of the grounding elasticity to the outer edge of the grounding extension portion 3127, so that the adjusting structure 313 can enhance shielding and isolation for the signal bending portion 3116 at both sides, and effectively reduce the signal interference between the signal terminals 311 at both sides of the grounding terminal 312.

Referring to fig. 2, 6 and 7, the grounding member 4 has a plurality of sets of contact arms extending from the main body portion 41, each set of contact arms includes a first contact arm 42 and a second contact arm 43 contacting the same grounding terminal 312. Each of the first contact arms 42 is in contact with a corresponding one of the ground bending portions 3126, and the groove 3131 is disposed on an outer edge of the ground bending portion 3126. Since the ground kink portion 3126 is in contact with the first contact arm 42, the material is thickened, which increases the capacitance of the ground kink portion 3126, and the capacitance at the groove 3131 of the adjusting structure 313 of the present application is smaller than the capacitance of the protrusion 3132, the present application provides the groove 3131 at the outer edge of the ground kink portion 3126, which can avoid the capacitance from being increased at the protrusion 3132 with a larger capacitance, and reduce the influence of the contact between the ground piece 4 and the ground terminal 312 on the shielding effect of the ground terminal 312. The plurality of ground terminals 312 can be connected together through the ground member 4 to form an integral ground shielding structure, which can improve the ground shielding effect of the electrical connector 100; in addition, the width of the groove 3131 is small, so that the ground terminal 312 is bent to form the ground bending portion 3126 during molding. Further, the ground extending portion 3127 is provided with a plurality of adjusting structures 313, and along the extending direction of the ground extending portion 3127, the first contact arm 42 and the second contact arm 43 of the same group respectively extend beyond two ends of the plurality of adjusting structures 313 located at the ground extending portion 3127. Since the adjusting structure 313 is provided with the concave groove 3131 and the convex portion 3132, electromagnetic waves are distributed around the adjusting structure 313 more densely and complexly, the present application can span a plurality of adjusting structures 313 of the grounding extension 3127 by extending the first contact arm 42 and the second contact portion beyond the adjusting structure 313, so that the electromagnetic field around the adjusting structure 313 is coupled to the grounding member 4, thereby better absorbing the electromagnetic waves around the adjusting structure 313 and reducing resonance. It should be noted that, the present application does not limit that the first contact arm 42 and the second contact arm 43 of the same group respectively extend beyond two ends of the ground extension portion 3127, as long as the first contact arm and the second contact arm extend beyond two ends of the plurality of adjustment structures 313 located at the ground extension portion 3127.

It should be noted that d < λ in the present application may be set to d less than one fourth of λ, that is, d < λ/4, in order to reduce the coupling amount between the ground terminal 312 and the signal terminal 311, reduce resonance, and improve the isolation effect of the ground terminal 312. For example, when the operating frequency of the signal transmitted by the signal terminal 311 is 16GHZ, λ is about 18.75mm, λ/4 is about 4.69mm, and d can be set to a value of 3.5mm, 4mm, or 10 mm; when the operating frequency of the signal transmitted by the signal terminal 311 is 32GHZ, λ is about 9.76mm, λ/4 is about 2.34mm, and d can be set to a value of 2mm or 8 mm; when the operating frequency of the signal transmitted by the signal terminal 311 is 64GHZ, λ is about 4.69mm, λ/4 is about 1.17mm, and d can be set to a value of 1mm, 3mm or 4 mm; when the operating frequency of the signal transmitted by the signal terminal 311 is 128GHZ, λ is about 2.34mm, λ/4 is about 0.59mm, d can be set to 2mm, and so on.

In addition, in a preferred embodiment, a recessed depth of the groove 3131 in the second direction Y may be set to one third of a width of the ground terminal 312. The concave 3131 and the convex 3132 of the adjusting structure 313 in this embodiment are circular arcs, and in other embodiments, the concave 3131 and the convex 3132 may be other shapes, such as rectangular, triangular or other shapes.

Referring to the drawings, a connection assembly according to the present invention is illustrated, which includes the electrical connector 100, the circuit board 200 and a plurality of resistors 400. The related structure and corresponding technical effects of the electrical connector 100 are as described above, and are not described herein again. The resistor 400 and the electrical connector 100 are mounted on the circuit board 200, the circuit board 200 is provided with a plurality of grounding paths 201 to be respectively connected with a plurality of grounding terminals 312 of the electrical connector 100, the resistor 400 is connected with the corresponding grounding path 201, and the grounding terminal 312 of the electrical connector 100 is connected with the resistor 400 through the grounding path 201. The cross-talk electromagnetic energy is absorbed to ground more quickly by the resistor 400, reducing electromagnetic wave reflections and reducing resonance in the electrical connector 100. Preferably, the resistor 400 matches the impedance of the ground terminal 312, so that the ground terminal 312 provides an excellent isolation effect for the signal terminal 311.

Of course, in other embodiments, the differential pair may not be provided, for example, the single-ended signal terminals 311 are provided, two signal terminals 311 are provided on two sides of at least one ground terminal 312, and the ground terminal 312 with the adjusting structure 313 may also effectively shield and isolate the single-ended signal terminals 311 on two sides thereof. In the present embodiment, both outer edges of the ground terminal 312 located between the two signal terminals 311 are provided with the adjusting structure 313; in other embodiments, however, only one of the outer edges may be provided with the adjusting structure 313, so as to reduce crosstalk from one of the signal terminals 311 to the other signal terminal 311, and crosstalk between the two signal terminals 311 may also be relatively reduced.

To sum up, the utility model discloses an electric connector 100 and coupling assembling have following beneficial effect:

1. the adjusting structures 313 are arranged on the outer edge of the ground terminal 312, the adjusting structures 313 are provided with the grooves 3131 and the protrusions 3132, the crosstalk between the signal terminals 311 on the two sides of the ground terminal 312 is reduced, and the length of the adjusting structures 313 is smaller than the working wavelength of signals transmitted by the signal terminals 311, so that the coupling amount between the adjusting structures 313 and the signal terminals 311 is small, the mutual permeation of electromagnetic fields between the signal terminals 311 on the two sides is inhibited, and the signal terminals 311 are effectively shielded and isolated. The shape of the outer edge of the original ground terminal 312 is adjusted, which has little influence on the spatial layout of the electrical connector 100 and facilitates the miniaturization design of the electrical connector 100.

2. This application is greater than second width W2 through first width W1, reduces signal exposure portion 3113 with the electric capacity size difference of signal fixed part 3114 improves the impedance uniformity of signal terminal 311 is favorable to signal transmission of signal terminal 311. In addition, the holding force between the ground fixing portion 3124 and the insulation block 32 can be strengthened by the groove 3131 and the protrusion 3132 of the adjusting structure 313, so that the risk of the ground terminal 312 being detached from the insulation block 32 is reduced.

3. This application is through setting up P1< P2, two of differential pair signal exposure portion 3113 close coupling can reduce signal exposure portion 3113 with the impedance size difference of signal fixed part 3114 is favorable to the impedance uniformity of signal terminal 311. In addition, the adjustment structure 313 provided by the ground exposure portion 3123 can effectively isolate the signal exposure portion 3113, and can more effectively reduce signal interference between two adjacent differential pairs.

4. When d < λ/4, the amount of coupling between the ground terminal 312 and the signal terminal 311 can be reduced, resonance can be reduced, and the isolation effect of the ground terminal 312 can be further improved.

5. The connection assembly provided by the present application can absorb the electromagnetic energy of the crosstalk to the ground more quickly through the resistor 400, reduce the reflection of electromagnetic waves, and reduce the resonance in the electrical connector 100.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all the equivalent technical changes using the description and drawings of the present invention are included in the scope of the present invention.

Claims

1. An electrical connector, comprising: the conductive terminals are arranged in a row along an arrangement direction, each conductive terminal comprises at least one grounding terminal and two signal terminals which are respectively positioned at two sides of the corresponding grounding terminal along the arrangement direction, each grounding terminal is provided with a grounding contact part, a grounding conducting part and a grounding main body part which is connected with the corresponding grounding contact part and the corresponding grounding conducting part, and each signal terminal is provided with a signal contact part, a signal conducting part and a signal main body part which is connected with the corresponding signal contact part and the corresponding signal conducting part;

the grounding main body part is provided with two outer edges which are oppositely arranged along the arrangement direction, at least one outer edge of the grounding main body part is provided with a plurality of adjusting structures which are continuously arranged, each adjusting structure comprises a groove and a convex part, the working wavelength of a signal transmitted by the signal terminal is defined as lambda, the length of the adjusting structure is defined as d, and the lambda is smaller than the d.

2. The electrical connector of claim 1, including an insulative block holding a plurality of said conductive terminals, said signal body portion having a signal retention portion secured to said insulative block and a signal exposure portion extending beyond said insulative block, said ground body portion having a ground retention portion secured to said insulative block and a ground exposure portion extending beyond said insulative block;

the grounding exposure parts are positioned between the two signal exposure parts along the arrangement direction, and the grounding exposure parts are provided with the adjusting structures.

3. The electrical connector as claimed in claim 2, wherein the ground fixing portion is provided with the adjustment structure, a width of the recess defining the adjustment structure of the ground exposing portion in the arrangement direction is a first width, a width of the recess defining the adjustment structure of the ground fixing portion in the arrangement direction is a second width, and the first width is greater than the second width.

4. The electrical connector of claim 2, wherein said conductive terminals include a plurality of said ground terminals and a plurality of differential pairs, each of said differential pairs including two of said signal terminals disposed adjacent to each other with at least one of said ground terminals therebetween, and a distance between two of said signal holding portions of each of said differential pairs along said arrangement direction is greater than a distance between two of said signal exposure portions thereof along said arrangement direction.

5. The electrical connector of claim 4, further comprising a grounding member, wherein the grounding member includes a main body portion and a plurality of sets of shielding portions extending from the main body portion, the main body portion is provided with a plurality of latching holes, each of the latching holes is aligned with a gap between two of the signal fixing portions of a corresponding one of the differential pairs as viewed in a thickness direction of the main body portion of the grounding member, the insulating block is provided with a plurality of latching posts, and the plurality of latching posts and the plurality of latching holes are fixed in cooperation with each other;

every group the shielding part includes a first shielding part and a second shielding part, each the card hole is located and corresponds a set of the shielding part first shielding part with between the second shielding part, first shielding part certainly the main part orientation the direction of signal exposure portion extends, second shielding part certainly the main part orientation the direction of signal connection portion extends.

6. The electrical connector of claim 1, wherein d < λ/4.

7. The electrical connector of claim 1, wherein the grounding body has a grounding extension portion connected to the grounding conductive portion, a grounding bending portion bent and extended from the grounding extension portion, and a grounding elastic arm extended from the grounding bending portion, the grounding elastic arm being connected to the grounding contact portion;

the signal main body part is provided with a signal extension part connected with the signal guide connection part, a signal bending part bent and extended from the signal extension part and a signal elastic arm extended from the signal bending part, and the signal elastic arm is connected with the signal contact part;

the ground bending part and the signal bending part are aligned along the arrangement direction, and the adjusting structure continuously extends from the outer edge of the ground elastic arm to the outer edge of the ground extension part.

8. The electrical connector of claim 7, further comprising a grounding member, wherein the grounding member comprises a main body portion and a plurality of first contact arms extending from the main body portion, each of the first contact arms is respectively in contact with a corresponding one of the grounding bent portions, and the outer edge of the grounding bent portion is provided with the groove.

9. The electrical connector of claim 1, wherein the grounding body has a grounding extension portion connected to the grounding conductive portion, a grounding bending portion bent and extended from the grounding extension portion, and a grounding elastic arm extended from the grounding bending portion, the grounding elastic arm is connected to the grounding contact portion, and the grounding extension portion has a plurality of the adjusting structures;

the electrical connector further includes a grounding member, the grounding member includes a main body portion and a plurality of sets of contact arms extending from the main body portion, each set of contact arms includes a first contact arm and a second contact arm contacting the same grounding terminal, wherein along an extending direction of the grounding extension portion, the first contact arm and the second contact arm of the same set extend beyond two ends of the plurality of adjustment structures located at the grounding extension portion, respectively.

10. A connection assembly comprising a circuit board, a resistor, and an electrical connector according to any one of claims 1 to 9, both mounted to the circuit board, the resistor being connected to a ground path of the circuit board, a ground terminal of the electrical connector being connected to the resistor through the ground path.