Electric connector

Abstract

The invention discloses an electric connector which comprises a shell, two terminal strips, a loss component, a plug piece and at least one metal sheet, the shell comprises a slot, the two terminal strips are located on the two sides of the slot in the front-back direction, each terminal strip comprises a plurality of signal terminals and a plurality of grounding terminals, and the signal terminals and the grounding terminals are arranged side by side in the left-right direction. Each signal terminal comprises a signal contact part and a signal elastic part which is formed by extending downwards from the signal contact part, the plug piece comprises a main body part and a plurality of protruding strips, each protruding strip is overlapped with at least one signal elastic part when viewed downwards, the protruding strips are located between the signal elastic parts and the slots in the front-back direction, and the metal sheet is arranged between the loss component and the terminal strip. The loss component penetrates through the metal sheet and is electrically coupled with the grounding terminal, and the metal sheet isolates the signal terminal from the loss component, so that the influence of the loss component on the signal terminal can be reduced, and the high-frequency performance is further improved.

Description

[Technical field]

[0001] The present invention relates to an electric connector, in particular to an electric connector with improved high frequency performance. [Background technology]

[0002] An existing electrical connector includes an insulating body, a lossy component, a ground terminal and a signal terminal. The lossy component serves as a shielding structure and is electrically coupled to the ground terminal. It can absorb noise between signal terminals and reduce crosstalk. It has a good shielding effect and improves the high-frequency performance of the electrical connector.

[0003] However, due to its material properties, the lossy component absorbs the noise between the signal terminals while also absorbing the signal transmitted from the signal terminals to the receiving end (such as the system). Therefore, the insertion loss of the electrical connector will increase, making the signal integrity (hereinafter referred to as SI) of the electrical connector worse, and the high-frequency performance needs to be further improved.

[0004] Therefore, it is necessary to design an electrical connector to solve the above technical problems. [Summary of the invention]

[0005] The invention aims to provide an electrical connector which utilizes metal sheets to isolate signal terminal loss components, thereby improving high-frequency performance.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An electrical connector, comprising: a housing, comprising a slot for a mating element to be inserted downward;

[0008] Two terminal rows are accommodated in the housing, the two terminal rows are respectively arranged on both sides of the slot along the front-to-back direction, and each terminal row includes a plurality of signal terminals and a plurality of ground terminals arranged along the left-to-right direction; a loss component is arranged between the two terminal rows, the loss component includes a main body and at least one protrusion protruding from the main body toward the ground terminal; a plug is arranged between the two terminal rows, the plug includes a main body and a plurality of protrusions extending upward from the main body; at least one metal sheet is arranged between the main body and the terminal row, the metal sheet includes a plurality of slots and a plurality of isolation portions, the protrusion passes through the slot and is electrically coupled with the ground terminal, and the isolation portion is located between the signal terminal and the plug.

[0009] Furthermore, a plurality of solder feet are provided at the lower end of the metal sheet, and the solder feet are soldered to a surface of the circuit board. Both the ground terminal and the solder feet are connected to the ground layer on the circuit board. When viewed in the front-to-back direction, the solder feet are aligned with the ground terminal.

[0010] Furthermore, the plug and the loss component are injection molded, and the main body includes a base arranged above the main body, and a plurality of protrusions extending upward from the base, and in the left and right directions, at least one protrusion is provided between two adjacent protrusions, and viewed along the front and rear directions, each isolation portion overlaps with each protrusion, and each isolation portion also overlaps with two protrusions on the left and right sides of each protrusion.

[0011] Further, in the up-down direction, the partition portion is higher than the protruding portion.

[0012] Furthermore, it comprises two injection molding blocks, each of which is injection molded with a corresponding terminal row, each protrusion has a hook, the hook cooperates with the upper surface of the injection molding block to fix the plug between the two terminal rows, and the isolation part is located below the hook.

[0013] Furthermore, it includes two injection blocks, each injection block is injection molded with a corresponding terminal row, the metal sheet is provided with a plurality of fixing blocks protruding toward the injection block along the front-to-back direction relative to the isolation portion, the injection block is provided with a plurality of fixing grooves cooperating with the plurality of fixing blocks, and in the up-down direction, the distance between the fixing groove and the lower surface of the injection block is smaller than the distance between the fixing groove and the upper surface of the injection block.

[0014] Furthermore, the metal sheet is provided with a plurality of fixing blocks protruding in the front-rear direction relative to the isolation portion, and in the up-down direction, the fixing blocks are lower than the slots.

[0015] Furthermore, each signal terminal also includes a signal tail extending from the lower surface of the shell and a signal retaining portion extending upward from the signal tail and connected to the signal elastic portion. The signal elastic portion is closer to the slot than the signal tail. The signal retaining portion is flat and extends obliquely from bottom to top toward the slot.

[0016] Furthermore, the grounding terminal includes a grounding tail extending from the lower surface of the shell, a grounding retaining portion extending upward obliquely from the grounding tail, and a grounding elastic portion extending from the grounding retaining portion. The main body includes a base arranged above the main body, and a plurality of protrusions extending upward from the base, each protrusion extending upward to form an extension portion, and looking downward, each extension portion overlaps with each grounding elastic portion. In the front-to-back direction, the extension portion is located between the grounding elastic portion and the slot, and the surface of the extension portion facing the grounding elastic portion is a first mating surface, and the shape of the first mating surface is adapted to the shape of the grounding elastic portion.

[0017] Further, looking downward, each protrusion overlaps with at least one signal elastic part. In the front-to-back direction, the protrusion is located between the signal elastic part and the slot. The surface of the protrusion facing the signal elastic part is a second mating surface, and the shape of the second mating surface matches the shape of the signal elastic part.

[0018] Furthermore, it includes two injection blocks, each of which is injection molded with a corresponding terminal row, each grounding terminal includes a grounding tail extending from the lower surface of the shell, the grounding tail includes a grounding welding portion welded to the circuit board and a grounding bending portion connecting the grounding welding portion and the grounding holding portion, two adjacent signal terminals form a differential terminal pair, and a grounding terminal adjacent to the differential terminal pair is distributed on the left and right sides respectively, the differential terminal pair and the adjacent grounding terminals on its left and right sides form a terminal group, the spacing between the two grounding tails in the same terminal group is smaller than the spacing between the two grounding holding portions, and the injection block extends downward to be provided with a spacing block extending into between the two adjacent grounding bending portions.

[0019] Furthermore, the outer shell is extended downward to be provided with a plurality of dividing blocks, and the dividing blocks are aligned front to back with the spacing blocks.

[0020] Furthermore, two adjacent signal terminals form a differential terminal pair, and a ground terminal is disposed adjacent to the differential terminal pair on each of the left and right sides. Each ground terminal includes a narrow portion electrically coupled to the protruding portion and a wide portion located above the narrow portion. In the left-right direction, the size of the narrow portion is smaller than the size of the wide portion, and the distance between the wide portion and the adjacent differential terminal pair is smaller than the distance between the narrow portion and the adjacent differential terminal pair. In the front-to-back direction, the distance between the loss component and the wide portion is greater than the distance between the loss component and the narrow portion.

[0021] Further, looking downward, each protrusion overlaps with at least one signal elastic portion. In the front-to-back direction, the protrusion is located between the signal elastic portion and the slot. The isolation portion extends upward to form a plurality of signal extension portions. Each signal extension portion is located between the signal elastic portion and the protrusion. The signal extension portion is higher than the protrusion but lower than the signal contact portion.

[0022] Furthermore, each signal extension portion is provided with a signal docking portion, and the signal docking portion contacts the docking element.

[0023] Furthermore, it includes two injection blocks, each of which is injection molded with a corresponding terminal row, and the lower surface of the injection block is also extended downward to have multiple protrusions, each signal terminal also includes a signal tail extending from the lower surface of the shell, the signal tail is connected to the cable, and two adjacent signal terminals form a differential terminal pair. The protrusion has a supporting part, and the supporting part is located between the two signal tails of the same differential terminal pair and the corresponding isolation part in the front-to-back direction. Each protrusion is provided with a through hole that penetrates along the front-to-back direction, and in the front-to-back direction, the projection part of the two signal tails of the same differential terminal pair is located in the through hole.

[0024] Furthermore, each grounding terminal includes a grounding contact portion extending into the slot, the grounding contact portion is connected downwardly to a grounding elastic portion, and the isolation portion extends upwardly to form a plurality of grounding extension portions, each grounding extension portion is located between the grounding elastic portion and the body, and the grounding extension portion is higher than the body but lower than the grounding contact portion.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The loss component passes through the slot of the metal sheet and is electrically coupled to the ground terminal, forming a ground loop between the loss component and the ground terminal, thereby optimizing the shielding effect; the loss component is arranged between the two terminal rows to reduce the crosstalk between the two terminal rows; a metal sheet is added between the signal terminal and the loss component, and the metal sheet isolates the loss component from the signal terminal, so that the loss component will not absorb or reduce the absorption of the signal transmitted from the signal terminal to the receiving end (such as the system), thereby optimizing the insertion loss of the electrical connector and improving the SI of the electrical connector.

Brief Description of the Drawings

[0027] Figure 1 A three-dimensional diagram of the first embodiment of the electrical connector of the present invention being installed on a circuit board and docking with a docking element;

[0028] Figure 2 for Figure 1 Exploded view of the CEC connector, docking components and circuit board;

[0029] Figure 3 for Figure 1 A three-dimensional exploded view of some components of the China Electric connector;

[0030] Figure 4 for Figure 1 A front view of the electrical connector and some components of the circuit board;

[0031] Figure 5 for Figure 1 A cross-sectional view of the CEC connector and the circuit board along the plane where the Z-axis and the Y-axis are located;

[0032] Figure 6 for Figure 1 A side view of some components of the electrical connector;

[0033] Figure 7 for Figure 1 A top view of some components of the electrical connector;

[0034] Figure 8 for Figure 1 A three-dimensional view of some components of the electrical connector and circuit board;

[0035] Fig. 9 for Figure 1 A front view of a portion of the terminal set of the CEC connector;

[0036] Fig.10 is a perspective view of a second embodiment of an electrical connector of the present invention;

[0037] Fig.11 for Fig.10 Exploded view of the CEC connector;

[0038] Fig.12 for Fig.10 Front view of some components of the electrical connector and cable;

[0039] Fig.13 for Fig.10 A side view of some components of the electrical connector;

[0040] Fig.14 for Fig.10 A three-dimensional cross-sectional view of some components of the electrical connector and the mating component along one of the planes where the Z axis and the Y axis are located;

[0041] Fig.15 for Fig.10 A three-dimensional cross-sectional view of some components of the electrical connector and the docking component along another plane where the Z axis and the Y axis are located;

[0042] Description of the accompanying drawings for the specific implementation:

[0043] Electrical connector 100 Shell 1 Slot 11 Separator block M Injection block 2 Guide groove 21 Fixed slot 22 Spacer block N Terminal block R Signal terminal 3 Signal holding part 31 Signal tail 32 Signal welding part 321 Signal bending portion 322 Signal elastic part 33 Signal contact 34 Differential terminal pair S Ground terminal 4 Ground holding portion 41 Wide section 411 Narrow part 412 Ground tail 42 Ground welding part 421 Ground bending portion 422 Grounding elastic portion 43 Ground contact 44 Terminal Group Loss component 5 Ontology Base 51 Bump 52 Extension 53 First mating surface 531 Protrusion 54 Plug 6 Main body 61 Protrusion 62 Second mating surface 621 Hook 63 Metal sheet 7 Slot 71 Isolation section 72 Fixed block 73 Welding foot 74 Docking element 200 Circuit board 300 Metal sheet pad 301 Signal pad 302 Ground pad 303 Signal extension L1 Signal connection unit T1 Ground extension L2 Ground connection part T2 Metal sheet contact O Projection Q Through hole H Support part A Cable 400 [Specific implementation method]

[0044] In order to facilitate a better understanding of the purpose, structure, characteristics and effects of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.

[0045] For ease of understanding, the present invention defines the X-axis extension direction as the left-right direction, wherein the positive direction of the X-axis is rightward, defines the Y-axis extension direction as the front-back direction, wherein the positive direction of the Y-axis is forward, defines the Z-axis as the up-down direction, wherein the positive direction of the Z-axis is upward; defines the spacing as the length between the centers of two elements, and defines the distance as the length between the edges of two elements.

[0046] Figure 1-9 This is the first embodiment of the electrical connector of the present invention. The electrical connector 100 is used to connect a docking element 200 in the upper and lower directions. The electrical connector 100 includes a housing 1, two injection molded blocks 2, a plurality of signal terminals 3, a plurality of ground terminals 4, a loss component 5, a plug 6 and two metal sheets 7.

[0047] See also Figure 1 , 2 5. The housing 1 is provided with a slot 11 for the docking element 200 to be inserted into, and the lower surface of the housing 1 extends downward to form a plurality of partition blocks M.

[0048] See also Figure 2 , 5 Two injection blocks 2 are accommodated in the shell 1, and the two injection blocks 2 are distributed on both sides of the slot 11 along the front-to-back direction. The side of the injection block 2 facing the slot 11 is provided with a plurality of guide grooves 21 extending upward from its lower surface, and the guide grooves 21 do not penetrate the upper surface of the injection block 2; the side of the injection block 2 facing the slot 11 is also provided with a plurality of fixing grooves 22 recessed along the front-to-back direction; the lower surface of the injection block 2 extends downward to form a plurality of spacer blocks N, and the spacer blocks N correspond to the partition blocks M one by one and are aligned in the front-to-back direction.

[0049] See also Figure 2 , 3 , 5, 9, each signal terminal 3 includes a signal tail portion 32, a signal retaining portion 31, a signal elastic portion 33 and a signal contact portion 34. The signal tail portion 32 extends out of the housing 1 from the lower surface of the housing 1 and is welded on a circuit board 300 (of course, in other embodiments, the signal tail portion 32 can also be connected to a cable). The surface of the circuit board 300 is provided with a signal pad 302, and the signal tail portion 32 is welded to the signal pad 302 (that is, the welding method is SMT). Of course, in other embodiments, the circuit board 300 can also be provided with a hole that matches the signal tail portion 32, and the signal tail portion 32 is inserted into the hole (that is, the welding method is DIP). The signal tail portion 32 includes a signal welding portion 321 welded to the surface of the circuit board 300 and a signal bending portion 322 connecting the signal welding portion 321 and the signal retaining portion 31. The injection block 2 is injection molded with the signal holding portion 31, and the signal holding portion 31 is formed by extending upward from the signal bending portion 322, and the insertion direction of the docking component 200 is perpendicular to the circuit board 300. Of course, in other embodiments, the signal holding portion 31 can also be first extended upward and then bent and extended in the front-to-back direction, and the insertion direction of the docking component 200 is not perpendicular to the circuit board 300. The signal elastic portion 33 is formed by extending upward from the signal holding portion 31, and the signal elastic portion 33 extends upward to form a signal contact portion 34 extending into the slot 11. When the docking component 200 is inserted into the slot 11, the signal contact portion 34 contacts the docking component 200, and the signal elastic portion 33 can swing.

[0050] See also Figure 3 , 5 6. In the front-to-back direction, the signal elastic portion 33 is closer to the slot 11 than the signal tail portion 32. The signal retaining portion 31 is flat as a whole and extends obliquely from bottom to top toward the slot 11, thereby connecting the signal elastic portion 33 and the signal tail portion 32. The signal retaining portion 31 has no bent portion. At this time, the length of the signal retaining portion 31 is the shortest, so that the signal transmission path is also the shortest path, thereby improving the signal transmission performance of the signal terminal 3.

[0051] See also Figure 2, 3 , 5, 9, each grounding terminal 4 includes a grounding tail 42, a grounding holding portion 41, a grounding elastic portion 43 and a grounding contact portion 44. The grounding tail 42 extends out of the housing 1 from the lower surface of the housing 1 and is welded to the circuit board 300 (of course, in other embodiments, the signal tail 32 can also be connected to the cable). The surface of the circuit board 300 is provided with a grounding pad 303, and the grounding tail 42 is welded to the grounding pad 303 (that is, the welding method is SMT). Of course, in other embodiments, the circuit board 300 can also be provided with a hole that matches the grounding tail 42, and the grounding tail 42 is inserted into the hole (that is, the welding method is DIP). The grounding tail 42 includes a grounding welding portion 421 welded to the surface of the circuit board 300 and a grounding bending portion 422 connecting the grounding welding portion 421 and the grounding holding portion 41. The grounding holding portion 41 is injection molded with the injection block 2. The grounding holding portion 41 is formed by extending upward from the grounding bending portion 422. The insertion direction of the docking element 200 is perpendicular to the circuit board 300. Of course, in other embodiments, the grounding holding portion 41 can also be extended upward first and then bent and extended along the front-back direction. The insertion direction of the docking element 200 is not perpendicular to the circuit board 300. The grounding holding portion 41 includes a narrow portion 412 and a wide portion 411 located above the narrow portion 412. The size of the narrow portion 412 is smaller than the size of the wide portion 411 in the left-right direction. The grounding elastic portion 43 is formed by extending upward from the grounding holding portion 41. The grounding elastic portion 43 extends upward to form a grounding contact portion 44 extending into the slot 11. When the docking element 200 is inserted into the slot 11, the grounding contact portion 44 contacts the docking element 200, and the grounding elastic portion 43 can swing.

[0052] See also Figure 3 , 5 6. In the front-to-back direction, the grounding elastic portion 43 is closer to the slot 11 than the grounding tail portion 42. The grounding holding portion 41 is flat as a whole and extends obliquely from bottom to top toward the slot 11, thereby connecting the grounding elastic portion 43 and the grounding tail 42. The grounding holding portion 41 has no bent portion. When viewed from the left and right direction, the shapes of the grounding holding portion 41 and the signal holding portion 31 match. At this time, the length of the grounding holding portion 41 is the shortest, and the grounding path is also the shortest.

[0053] See also Figure 2 , 3, 5, 9, a plurality of signal terminals 3 and a plurality of grounding terminals 4 are arranged in the left-right direction to form two terminal rows R, which are distributed on both sides of the slot 11 in the front-back direction, and each terminal row R is injection molded with an injection block 2. In each terminal row R, two adjacent signal terminals 3 form a differential terminal pair S, and a grounding terminal 4 is disposed adjacent to the left and right sides of the differential terminal pair S, and the differential terminal pair S and the adjacent grounding terminals 4 on the left and right sides form a terminal group r. The electrical connector 100 also includes a plurality of power terminals (unnumbered) for transmitting power, which are disposed on one side of the injection block 2 in the left-right direction and accommodated in the housing 1.

[0054] See also Fig. 9 In the same differential terminal pair S, the spacing C1 between the two signal contact portions 34 is greater than the spacing C2 between the two signal elastic portions 33, the spacing C1 between the two signal contact portions 34 is greater than the spacing C3 between the two signal tail portions 32, the distance D1 between the two signal contact portions 34 is greater than the distance D2 between the two signal elastic portions 33, and the distance D1 between the two signal contact portions 34 is greater than the distance D3 between the two signal tail portions 32.

[0055] See also Figure 2 , 4 , 5, 9, within the same terminal group r, the spacing C4 between the two grounding tails 42 is smaller than the spacing C5 between the two grounding retaining portions 41, and the distance D4 between the two grounding tails 42 is also smaller than the distance D5 between the two grounding retaining portions 41. As for the two grounding terminals 4 adjacently arranged between two adjacent terminal groups r, the distance D6 between the two grounding tails 42 is larger than the distance D7 between the two grounding retaining portions 41, and the spacer block N extends downwardly into between the grounding bending portions 422 of the adjacent grounding tails 42 of the adjacent terminal groups r.

[0056] See also Figure 4 , 5 , 8, 9, within the same terminal group r, the distance between the wide portion 411 and the differential terminal pair S is smaller than the distance between the narrow portion 412 and the differential terminal pair S, so that the narrow portion 412 is away from the differential terminal pair S relative to the wide portion 411.

[0057] See also Figure 3 , 6, 7, 8, the lossy member 5 is made of conductive plastic. Of course, in other embodiments, the lossy member 5 can also be made of insulating plastic with a metal layer electroplated on the surface. The lossy member 5 is fixed between the two terminal rows R. The lossy member 5 includes a body P and a plurality of protrusions 54 extending from the body P along the front-to-back direction toward the grounding holding portion 41. The protrusions 54 correspond to the grounding holding portions 41 one by one, and the protrusions 54 are in direct contact with the narrow portion 412 to form electrical coupling. Of course, in other embodiments, the protrusions 54 may not be in direct contact with the narrow portion 412 but have a relatively small gap to form electrical coupling. The body P includes a base 51, a plurality of protrusions 52 extending upward from the base 51 and corresponding to the ground terminals 4 one by one, and a plurality of extensions 53 extending upward from the plurality of protrusions 52. The extensions 53 extend upward beyond the bottom surface of the slot 11 and correspond to the grounding elastic portions 43 one by one. The extensions 53 are lower than the grounding contact portions 44 to prevent the grounding contact portions 44 and the docking element 200 from contacting the extensions 53 after the docking element 200 is inserted. Looking downward, each extension 53 overlaps with the corresponding grounding elastic portion 43. In the front-to-back direction, the extension 53 is located between the grounding elastic portion 43 and the slot 11, and the extension 53 does not extend into the slot 11. 1 contacts the docking element 200 to prevent the extension portion 53 from affecting the docking element 200; the surface of the extension portion 53 facing the grounding elastic portion 43 is a first mating surface 531, the shape of the first mating surface 531 is adapted to the shape of the grounding elastic portion 43, and the distance between the first mating surface 531 and the grounding elastic portion 43 changes evenly, so that the extension portion 53 can better absorb noise and improve the high-frequency performance of the electrical connector 100; the surfaces of the first mating surface 531 and the grounding elastic portion 43 are both inclined straight surfaces. Of course, in other embodiments, the surfaces of the first mating surface 531 and the grounding elastic portion 43 can also be curved surfaces, etc., as long as the shapes of the two are adapted.

[0058] See also Figure 5 , 6 In the front-to-back direction, the distance between the extension portion 53 and the grounding elastic portion 43 is greater than the distance between the protrusion 54 and the grounding holding portion 41. The protrusion 54 contacts the grounding holding portion 41 to form a grounding loop. A larger gap is required between the extension portion 53 and the grounding elastic portion 43 to leave room for the grounding elastic portion 43 to swing. Therefore, the extension portion 53 and the grounding elastic portion 43 do not form an electrical coupling, so the amount of charge passing through the extension portion 53 is small and does not form a grounding loop. However, the extension portion 53 is close to the grounding elastic portion 43, which can increase the capacitive coupling at the position of the grounding elastic portion 43, and can absorb the noise between the signal terminals 3, thereby improving crosstalk.

[0059] See also Figure 6 , 8In the front-to-back direction, the distance between the loss member 5 and the wide portion 411 is greater than the distance between the protrusion 54 and the narrow portion 412, that is, the distance between the protrusion 52 and the wide portion 411 is greater than the distance between the protrusion 54 and the narrow portion 412, and there is a gap between the protrusion 52 and the wide portion 411. The protrusion 54 contacts the narrow portion 412, so that charges pass between the loss member 5 and the ground terminal 4 to form a ground loop, and the narrow portion 412 is away from the differential terminal pair S relative to the wide portion 411, so that the protrusion 54 and the signal The distance between the signal terminals 3 is increased, and the interference of the charge on the protrusion 54 to the signal terminal 3 is improved; there is a gap between the protrusion 52 and the wide portion 411 so that the wide portion 411 does not contact the protrusion 52, and the amount of charge passing through the protrusion 52 at the position of the wide portion 411 is very small. The protrusion 52 here is close to the wide portion 411, which can increase the capacitive coupling at the position of the wide portion 411 and absorb the noise between the signal terminals 3, improve crosstalk, and there is a gap between the wide portion 411 and the protrusion 52 to avoid the injection block 2.

[0060] See also Figure 2 , 3 , 5, 7, the plug 6 is fixed between the two terminal rows R, and the loss member 5 and the plug 6 are injection molded. The plug 6 includes a main body 61 and a plurality of protrusions 62 extending upward from the main body 61 and corresponding to the plurality of differential terminal pairs S. The upper end of the protrusion 62 is higher than the bottom surface of the slot 11 but not higher than the signal contact portion 34. There is a gap between the protrusion 62 and the signal elastic portion 33. Looking downward, each protrusion 62 overlaps with the two signal elastic portions 33 in the differential terminal pair S corresponding to it. In the front-to-back direction, the protrusion 62 is located between the signal elastic portion 33 and the slot 11, increasing the capacitance near the signal elastic portion 33, thereby being adjustable. Impedance, and there is a gap between the protrusion 62 and the signal elastic part 33 to leave room for the swing of the signal elastic part 33; the surface of the protrusion 62 facing the signal elastic part 33 is a second matching surface 621, and the shape of the second matching surface 621 is adapted to the shape of the signal elastic part 33. The distance between the second matching surface 621 and the signal elastic part 33 changes evenly, and the impedance will not change significantly, so that the impedance is matched; the second matching surface 621 and the surface of the signal elastic part 33 are both inclined straight surfaces. Of course, in other embodiments, the second matching surface 621 and the surface of the signal elastic part 33 can also be curved surfaces or the like, as long as the shapes of the two are adapted.

[0061] See also Figure 3 , 5 Each protrusion 62 corresponds to a guide groove 21, and each protrusion 62 has a hook 63 that cooperates with the injection block 2. The plug 6 is inserted between the two terminal rows R from bottom to top. The protrusion 62 extends upward from the injection block 2 along the guide groove 21, and the hook 63 cooperates with the upper surface of the injection block 2 to fix the plug 6 between the two terminal rows R.

[0062] See also Figure 6 , 7 , each protrusion 62 corresponds to a differential terminal pair S, and each extension 53 corresponds to a ground terminal 4, so the size of the protrusion 62 in the left-right direction is larger than the size of the extension 53; in the up-down direction, the extension 53 is lower than the protrusion 62. The size of the extension 53 in the left-right direction is small, and reducing the size of the extension 53 in the up-down direction can reduce the overall size of the protrusion 52 and the extension 53 in the up-down direction, thereby preventing the protrusion 52 and the extension 53 from being broken due to excessive length, and the loss component 5 may also absorb the signal transmitted from the signal terminal 3 to the receiving end (such as the system) while absorbing the noise between the signal terminals 3, so the insertion loss of the electrical connector 100 will increase, making the signal integrity (hereinafter referred to as SI) of the electrical connector 100 worse, the protrusion 52 is not set longer, so that the length of the extension 53 will not be too long, and the part of the extension 53 close to the signal terminal 3 will not be too much, thereby reducing the extension 53 absorbing the signal transmitted from the signal terminal 3 to the receiving end (such as the system), thereby optimizing the insertion loss of the electrical connector 100 and improving the SI performance of the electrical connector 100.

[0063] See also Figure 6 , 7 The extension portion 53 is close to the grounding elastic portion 43 to improve the long string, but the extension portion 53 may also absorb the signal transmitted from the signal terminal 3 to the receiving end (such as the system). In the front-to-back direction, the distance between the protrusion 62 and the signal elastic portion 33 is smaller than the distance between the extension portion 53 and the grounding elastic portion 43, which increases the distance between the grounding elastic portion 43 and the extension portion 53, and also increases the distance between the extension portion 53 and the signal terminal 3, thereby reducing the extension portion 53 absorbing the signal transmitted from the signal terminal 3 to the receiving end (such as the system), thereby optimizing the insertion loss of the electrical connector 100 and improving the SI performance of the electrical connector 100. Moreover, the portion of the protrusion 62 closer to the signal elastic portion 33 can form a hook 63 that cooperates with the injection molded block 2.

[0064] See also Figure 5 In the front-to-back direction, the protrusion 52, the extension 53 and the ridge 62 are all arranged outside the slot 11 and do not extend into the slot 11, and the distance between the protrusion 52 and the slot 11 and the distance between the extension 53 and the slot 11 are both greater than the distance between the ridge 62 and the slot 11. During the manufacturing process, the protrusion 52, the extension 53 and the ridge 62 may form a burr extending toward the slot 11. Therefore, the protrusion 52 and the ridge 62 do not extend into the slot 11 to prevent the burr from interfering with the docking element 200. The loss component 5 is conductive, and the loss component 5 is arranged farther away from the slot 11 to prevent the burr from contacting the docking element 200 and affecting it.

[0065] See also Figure 2 ,3 8, the metal sheet 7 is assembled and fixed between the terminal row R and the loss member 5, so as to isolate the signal terminal 3 and the loss member 5. Of course, in other embodiments, the metal sheet 7 can also be injection molded with the loss member 5, so as to be fixed between the terminal row R and the loss member 5. Each metal sheet 7 includes a plurality of slots 71 corresponding to the plurality of protrusions 54 and a plurality of isolation portions 72 corresponding to the plurality of differential terminal pairs S. The opening of the slot 71 is upward, the protrusion 54 passes through the slot 71 and contacts the narrow portion 412, and the isolation portion 72 is located between the differential terminal pair S and the protrusion 62.

[0066] See also Figure 7 , 8 In the left-right direction, two protrusions 52 are provided between two adjacent protrusions 62, and the size of the isolating portion 72 is larger than the size of the protrusion 62. When viewed along the front-to-back direction, each isolating portion 72 overlaps with a protrusion 62 and two protrusions 52 on the left and right sides of the protrusion 62, so that the area of ​​the metal sheet 7 isolating the loss component 5 and the signal terminal 3 is larger, and the isolation effect is better.

[0067] See also Figure 8 In the up and down direction, the isolation portion 72 is lower than the hook 63 but higher than the protrusion 54. The hook 63 can stop the isolation portion 72 to prevent the metal sheet 7 from moving upward. The isolation portion 72 is higher than the protrusion 54, so that the area where the metal sheet 7 isolates the loss component 5 and the signal terminal 3 is larger, and the isolation effect is better.

[0068] See also Figure 3 , 5 8. The metal sheet 7 has a plurality of fixing blocks 73 protruding toward the injection block 2 along the front-to-back direction and corresponding to the fixing grooves 22 one by one, and the distance D10 between the fixing grooves 22 and the lower surface of the injection block 2 is smaller than the distance D11 between the fixing grooves 22 and the upper surface of the injection block 2. The fixing grooves 22 cooperate with the fixing blocks 73 to fix the metal sheet 7 in the electrical connector 100, and the fixing grooves 22 are arranged at a lower position. When the metal sheet 7 is loaded from bottom to top between the injection block 2 and the loss component 5, the fixing blocks 73 begin to contact and interfere with the injection block 2 only after most of the metal sheet 7 is loaded. The time for the fixing blocks 73 to interfere with the injection block 2 is short, and the metal sheet 7 encounters less resistance during the loading process, thereby avoiding excessive scratches between the metal sheet 7 and the injection block 2.

[0069] See also Figure 3 , 5 8. The fixing block 73 is located below the slot 71. During the installation of the metal sheet 7, the slot 71 first cooperates with the protrusion 54 of the loss component 5 to position the metal sheet 7 to the correct position. Then, the metal sheet 7 is finally positioned and fixed between the injection block 2 and the loss component 5 through the cooperation of the fixing block 73 and the fixing slot 22.

[0070] See also Figure 2 , 3 8, the metal sheet 7 extends downward to form a plurality of solder pins 74 soldered to the surface of the circuit board 300, and the surface of the circuit board 300 is provided with a metal sheet pad 301 soldered to the solder pins 74 (i.e., the soldering method is SMT). Of course, in other embodiments, the circuit board 300 may also be provided with a hole that matches the solder pin 74, and the solder pin 74 is inserted into the hole (i.e., the soldering method is DIP). The solder pin 74 is connected to the ground layer (not shown) on the circuit board 300 through the metal sheet pad 301, and the ground tail 42 is also connected to the ground layer on the circuit board 300 through the ground pad 303, which optimizes the grounding path of the ground terminal 4 and makes it easier for noise to be transmitted.

[0071] See also Figure 4 , 5 8. When viewed along the front-to-back direction, the solder foot 74 is aligned with the ground tail 42 front to back. Compared with the case where the solder foot 74 and the ground tail 42 are offset in the front-to-back direction, when the solder foot 74 and the ground tail 42 are directly opposite each other in the front-to-back direction, the distance between the solder foot 74 and the ground terminal 4 is closer, which can optimize the circuit design of the ground layer of the circuit board 300 so that the noise can flow back to the ground layer quickly.

[0072] See also Figure 2 , 8 Compared with the integrated design of the metal sheet pad 301 and the ground pad 303, the metal sheet pad 301 and the ground pad 303 are spaced apart in the front-to-back direction and are not integrated, so that the solder can be distributed more evenly between the solder foot 74 and the ground tail 42 during the welding process, and it is less likely that most of the solder will flow to one of the solder foot 74 or the ground tail 42.

[0073] Figure 10-15 This is the second embodiment of the electrical connector 100 of the present invention, and its main differences from the first embodiment are:

[0074] See also Fig.10 , 11 , 12, 13, the housing 1 is not provided with a partition block M aligned with the spacer block N in front and back; the injection molding block 2 is not provided with a guide protrusion 62 extending upward from the guide groove 21 of the injection molding block 2; in the front and rear directions, the distance between the protrusion 62 and the signal elastic part 33 is greater than the distance between the extension part 53 and the grounding elastic part 43, and the protrusion 62 is not provided with a hook 63 that cooperates with the upper surface of the injection molding block 2; the signal tail 32 extends vertically in the up-down direction, the signal tail 32 does not have a signal bending part 322, the signal tail 32 is used to connect the cable, the grounding tail 42 extends in the up-down direction, the grounding tail 42 does not have a grounding bending part 422, and the grounding tail 42 is used to connect the cable; the metal sheet 7 is not provided with a fixing block 73 that cooperates with the injection molding block 2, and the metal sheet 7 is not provided with a solder foot 74 that extends downward and is soldered to the circuit board 300.

[0075] See also Fig.11 , 12 , the spacer block N extends downward between the adjacent grounding tails 42 of the adjacent terminal group r, and the lower surface of the injection molded block 2 also extends downward to be provided with a plurality of convex portions Q located between two adjacent spacer blocks N in the left-right direction, and the convex portion Q has a supporting portion A, and the supporting portion A is located between the two signal tails 32 of the same differential terminal pair S and the corresponding isolation portion 72 in the front-to-back direction, and the supporting portion A is used to support the signal tail 32. Each convex portion Q is provided with a through hole H penetrating along the front-to-back direction, and in the front-to-back direction, the projections of the two signal tails 32 of the same differential terminal pair S are at least partially located in the through hole H, and the through hole H reduces the material of the injection molded block 2 of the signal tail 32, so that the capacitance near the signal tail 32 is reduced, and then the impedance near the signal tail 32 is increased, and the impedance is adjusted to achieve impedance matching.

[0076] See also Fig.11 , 13 Each protrusion 54 of the loss member 5 extends downward beyond the body P and extends in the left-right direction toward the side where the ground tail 42 is located to contact the ground tail 42. In the front-to-back direction, the size of the signal tail 32 is smaller than the size of the signal retaining portion 31, which can increase the inductance of the signal tail 32, thereby increasing the impedance of the signal tail 32, and adjusting the impedance to make the impedance match. In the front-to-back direction, the size of the ground tail 42 is smaller than the size of the ground retaining portion 41, so that the shape of the ground tail 42 matches the shape of the signal tail 32, which facilitates the molding of the ground terminal 4 and the signal terminal 3 together.

[0077] See also Fig.11 , 13 The isolation portion 72 of the metal sheet 7 extends upward to form a plurality of signal extension portions L1 and a plurality of ground extension portions L2. The signal extension portion L1 is located between the signal elastic portion 33 and the protrusion 62. The signal extension portion L1 is higher than the protrusion 62 but lower than the signal contact portion 34. Each ground extension portion L2 is located between the ground elastic portion 43 and the extension portion 53. The ground extension portion L2 is higher than the extension portion 53 but lower than the ground contact portion 44. The slot 71 opens downward, and the metal sheet 7 is installed on the loss component 5 from top to bottom.

[0078] A signal docking portion T1 is provided at the end of the signal extension portion L1, a grounding docking portion T2 is provided at the end of the grounding extension portion L2, and the docking component 200 is provided with a metal sheet contact O. When the docking component 200 is inserted into the slot 11, the signal docking portion T1 and the grounding docking portion T2 are both in contact with the metal sheet contact O.

[0079] The rest of the structure will not be described in detail.

[0080] In summary, the electrical connector of the present invention has the following beneficial effects:

[0081] (1) The lossy component 5 is electrically coupled to the ground terminal 4 of the electrical connector 100 to form a ground loop, thereby optimizing the shielding effect and reducing crosstalk. However, due to its material properties, the lossy component 5 absorbs the noise between the signal terminals 3 while also absorbing the signal transmitted from the signal terminals 3 to the receiving end (e.g., the system). Therefore, the insertion loss of the electrical connector 100 will increase, making the SI of the electrical connector 100 worse. A metal sheet 7 is added between the signal terminal 3 and the lossy component 5. The metal sheet 7 isolates the lossy component 5 from the signal terminal 3, so that the lossy component 5 does not absorb or reduces the signal transmitted from the signal terminal 3 to the receiving end (e.g., the system), thereby optimizing the insertion loss of the electrical connector 100 and improving the SI of the electrical connector 100.

[0082] (2) The inductive coupling between the signal elastic portion 33 and the grounding elastic portion 43 is large, resulting in large crosstalk. The base 51 of the loss member 5 extends an extension portion 53. When viewed in the front-to-back direction and when viewed downward, the extension portion 53 overlaps with the grounding elastic portion 43, so that the extension portion 53 is close to the grounding elastic portion 43, thereby increasing the capacitive coupling at the grounding elastic portion 43. According to the formula The size of the remote string is related to the difference between capacitive coupling and inductive coupling. Increasing the capacitive coupling actually means using more capacitive coupling to offset the inductive coupling, thus making the value in the above formula The value of is reduced to optimize the long string and improve the high frequency performance; and the loss component 5 can absorb the noise between the signal terminals 3. The setting of the extension portion 53 makes the loss component 5 correspond to a larger area of ​​the ground terminal 4, and the effect of absorbing the noise between the signal terminals 3 is better, thereby further improving the high frequency performance of the electrical connector 100.

[0083] (3) In the same differential terminal pair S, the spacing between the two signal contact portions 34 is greater than the spacing between the two signal elastic portions 33, the spacing between the two signal contact portions 34 is greater than the spacing between the two signal tail portions 32, the distance between the two signal contact portions 34 is greater than the distance between the two signal elastic portions 33, and the distance between the two signal contact portions 34 is greater than the distance between the two signal tail portions 32. This not only reduces the distance between the two signal terminals 3 in the differential terminal pair S to form a tight coupling, but also increases the distance between two adjacent differential terminal pairs S, thereby reducing crosstalk.

[0084] (4) In the same terminal group r, the distance between the two grounding tails 42 is smaller than the distance between the two grounding retaining portions 41, and the distance between the two grounding tails 42 of the two grounding terminals 4 is also smaller than the distance between the two grounding retaining portions 41. The grounding tails 42 are closer to the differential terminal pair S, thereby improving the crosstalk of the differential terminal pair S.

[0085] (5) With respect to two grounding terminals 4 adjacently arranged between two adjacent terminal groups r, the distance between the two grounding tails 42 is greater than the distance between the two grounding retaining portions 41, and the spacer block N is located between the adjacent grounding tails 42 of the adjacent terminal groups r, separating the adjacent differential terminal pairs S, thereby further reducing the crosstalk between the adjacent differential terminal pairs S.

[0086] (6) The isolation portion 72 of the metal sheet 7 extends upward to form a plurality of signal extension portions L1 and a plurality of ground extension portions L2. The signal extension portion L1 is located between the signal elastic portion 33 and the protrusion 62. The signal extension portion L1 is higher than the protrusion 62 but lower than the signal contact portion 34. Each ground extension portion L2 is located between the ground elastic portion 43 and the extension portion 53. The ground extension portion L2 is higher than the extension portion 53 but lower than the ground contact portion 44. The area of ​​the metal sheet 7 isolating the loss component 5 and the signal terminal 3 is larger, and the isolation effect is better.

[0087] (7) A signal docking portion T1 is provided at the end of the signal extension portion L1, and a grounding docking portion T2 is provided at the end of the grounding extension portion L2. The docking component 200 is provided with a metal sheet contact O. When the docking component 200 is inserted into the slot 11, the signal docking portion T1 and the grounding docking portion T2 are both in contact with the metal sheet contact O, so that the signal docking portion T1 and the grounding docking portion T2 are in contact with the grounding layer (not shown) on the docking component 200, thereby optimizing the grounding loop of the metal sheet 7, so that noise can be transmitted more quickly and easily.

[0088] The above detailed description is only an explanation of the preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.

Claims

1. An electrical connector, comprising: A housing including a slot for a docking element to be inserted downwardly; Two terminal rows accommodated in the housing, the two terminal rows are respectively arranged on two sides of the slot along the front-to-back direction, and each terminal row includes a plurality of signal terminals and a plurality of ground terminals arranged along the left-to-right direction; A lossy component is disposed between the two terminal rows, the lossy component comprising a body and at least one protrusion extending from the body toward the ground terminal; A plug, disposed between the two terminal rows, the plug comprising a main body and a plurality of protrusions extending upward from the main body; At least one metal sheet is arranged between the body and the terminal row. The metal sheet includes a plurality of slots and a plurality of isolation parts. The protrusion passes through the slots and is electrically coupled with the ground terminal. The isolation part is located between the signal terminal and the plug.

2. The electrical connector according to claim 1, characterized in that: A plurality of solder feet are provided at the lower end of the metal sheet, and the solder feet are soldered to a surface of the circuit board. Both the ground terminal and the solder feet are connected to the ground layer on the circuit board. When viewed from the front-to-back direction, the solder feet are aligned with the ground terminal.

3. The electrical connector according to claim 1, wherein: The plug and loss component are injection molded, and the main body includes a base arranged above the main body, and a plurality of protrusions extending upward from the base. In the left and right directions, at least one protrusion is provided between two adjacent protrusions. Viewed along the front and rear directions, each isolation portion overlaps with each protrusion, and each isolation portion also overlaps with two protrusions on the left and right sides of each protrusion.

4. The electrical connector according to claim 1, wherein: In the up-down direction, the partition portion is higher than the protruding portion.

5. The electrical connector according to claim 1, characterized in that: It includes two injection blocks, each of which is injection molded with a corresponding terminal row, each protrusion has a hook, the hook cooperates with the upper surface of the injection block to fix the plug between the two terminal rows, and the isolation part is located below the hook.

6. The electrical connector according to claim 1, characterized in that: The invention comprises two injection molding blocks, each of which is injection molded with a corresponding terminal row, the metal sheet is provided with a plurality of fixing blocks which are protruded toward the injection molding block along the front-rear direction relative to the isolation part, the injection molding block is provided with a plurality of fixing grooves which cooperate with the plurality of fixing blocks, and in the up-down direction, the distance between the fixing groove and the lower surface of the injection molding block is smaller than the distance between the fixing groove and the upper surface of the injection molding block.

7. The electrical connector according to claim 1, characterized in that: The metal sheet is provided with a plurality of fixing blocks protruding in the front-rear direction relative to the isolation part, and in the up-down direction, the fixing blocks are lower than the slots.

8. The electrical connector according to claim 1, wherein: Each signal terminal also includes a signal tail extending from the lower surface of the shell and a signal retaining portion extending upward from the signal tail and connected to the signal elastic portion. The signal elastic portion is closer to the slot than the signal tail. The signal retaining portion is flat and extends obliquely from bottom to top toward the slot.

9. The electrical connector according to claim 1, wherein: The grounding terminal includes a grounding tail extending from the lower surface of the shell, a grounding holding portion extending upward obliquely from the grounding tail, and a grounding elastic portion extending from the grounding holding portion. The body includes a base arranged above the main body, and a plurality of protrusions extending upward from the base, each protrusion extending upward to form an extension portion, and looking downward, each extension portion overlaps with each grounding elastic portion. In the front-to-back direction, the extension portion is located between the grounding elastic portion and the slot, and the surface of the extension portion facing the grounding elastic portion is a first mating surface, and the shape of the first mating surface is adapted to the shape of the grounding elastic portion.

10. The electrical connector according to claim 1, characterized in that: Looking downward, each protrusion overlaps with at least one signal elastic part. In the front-to-back direction, the protrusion is located between the signal elastic part and the slot. The surface of the protrusion facing the signal elastic part is a second matching surface, and the shape of the second matching surface matches the shape of the signal elastic part.

11. The electrical connector according to claim 1, characterized in that: It includes two injection blocks, each of which is injection molded with a corresponding terminal row, each grounding terminal includes a grounding tail extending from the lower surface of the shell, the grounding tail includes a grounding welding portion welded to the circuit board and a grounding bending portion connecting the grounding welding portion and the grounding holding portion, two adjacent signal terminals form a differential terminal pair, a grounding terminal adjacent to the differential terminal pair is distributed on the left and right sides, the differential terminal pair and the adjacent grounding terminals on the left and right sides form a terminal group, the spacing between the two grounding tails in the same terminal group is smaller than the spacing between the two grounding holding portions, and the injection block extends downward to be provided with a spacing block extending into between the two adjacent grounding bending portions.

12. The electrical connector according to claim 11, characterized in that: The outer shell is extended downwards to be provided with a plurality of dividing blocks, and the dividing blocks are aligned front and back with the spacing blocks.

13. The electrical connector according to claim 1, characterized in that: Two adjacent signal terminals form a differential terminal pair, and a ground terminal is disposed adjacent to the differential terminal pair on both sides thereof. Each ground terminal includes a narrow portion electrically coupled to the protruding portion and a wide portion located above the narrow portion. In the left-right direction, the size of the narrow portion is smaller than the size of the wide portion, and the distance between the wide portion and the adjacent differential terminal pair is smaller than the distance between the narrow portion and the adjacent differential terminal pair. In the front-to-back direction, the distance between the loss component and the wide portion is greater than the distance between the loss component and the narrow portion.

14. The electrical connector according to claim 1, wherein: Looking downward, each protrusion overlaps with at least one signal elastic portion. In the front-to-back direction, the protrusion is located between the signal elastic portion and the slot. The isolation portion extends upward to form a plurality of signal extension portions. Each signal extension portion is located between the signal elastic portion and the protrusion. The signal extension portion is higher than the protrusion but lower than the signal contact portion.

15. The electrical connector according to claim 14, characterized in that: Each signal extension portion is provided with a signal docking portion, and the signal docking portion contacts the docking element.

16. The electrical connector according to claim 14, characterized in that: It includes two injection blocks, each of which is injection molded with a corresponding terminal row, and the lower surface of the injection block is also extended downward to be provided with a plurality of protrusions, each signal terminal also includes a signal tail extending from the lower surface of the shell to the shell, the signal tail is connected to the cable, and two adjacent signal terminals form a differential terminal pair, the protrusion has a supporting portion, and the supporting portion is located between the two signal tails of the same differential terminal pair and the corresponding isolation portion in the front-to-back direction, and each protrusion is provided with a through hole penetrating along the front-to-back direction, and in the front-to-back direction, the projections of the two signal tails of the same differential terminal pair are at least partially located in the through hole.

17. The electrical connector according to claim 1, characterized in that: Each grounding terminal includes a grounding contact portion extending into the slot, the grounding contact portion is connected downwardly to a grounding elastic portion, and the isolation portion extends upwardly to form multiple grounding extension portions, each grounding extension portion is located between the grounding elastic portion and the body, and the grounding extension portion is higher than the body but lower than the grounding contact portion.

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