Slot connector

Abstract

The utility model discloses a slot connector, which comprises an insulating shell, a terminal module and a conductive loss component, the terminal module comprises a terminal row and a plastic seat, the terminal row comprises signal terminals and grounding terminals, the plastic seat is provided with openings for exposing parts of the grounding terminals, and the conductive loss component is arranged in the insulating shell. The opening gradually shrinks inwards from one side surface of the plastic seat to one side close to the grounding terminal; the conductive loss component is arranged in the mounting groove and comprises a main body part and a conductive rib convexly arranged on the main body part, the conductive rib comprises a connecting part and an abutting part, the abutting part gradually shrinks inwards from the connecting part to the direction close to the grounding terminal, the abutting part is inserted into the opening so as to abut against the grounding terminal, and the abutting part is provided with an abutting surface abutting against the grounding terminal; and the distance from the edge of the abutting surface to the adjacent signal terminal along the left-right direction is greater than the distance from the connecting part to the adjacent signal terminal along the left-right direction, so that transmission signals of the adjacent signal terminals absorbed by the conductive ribs can be reduced, and the integrity of high-frequency signal transmission is improved.

Description

[Technical Field]

[0001] This utility model relates to a slot connector, and more particularly to a slot connector for improving signal integrity. [Background Technology]

[0002] An existing slot connector includes an insulating housing, two terminal sub-modules, and a plug located between the two terminal sub-modules. The terminal module includes multiple conductive terminals and a plastic part injection-molded onto the multiple conductive terminals. The multiple conductive terminals include signal terminals and multiple ground terminals. The plastic base has an opening that exposes the ground terminals. The plug has multiple conductive portions electrically connected to the multiple ground terminals along the front-to-back direction. Each conductive portion is of equal width in the left-to-right direction, and the opening is also of equal width in the left-to-right direction. When the conductive portion is perpendicularly inserted into the opening and contacts the ground terminal, the equal width of the opening is not conducive to the insertion of the conductive portion. Specifically, the width of the conductive portion in the left-to-right direction is greater than or equal to the width of the exposed portion of the ground terminal in the left-to-right direction. In the field of electrical connectors, using conductive plastic to contact the ground terminal is usually to absorb electromagnetic waves from the ground terminal to prevent electromagnetic waves from affecting signal transmission. Theoretically, more conductive plastic is beneficial for absorbing more electromagnetic waves. However, in reality, when too much conductive plastic contacts the ground terminal, its conductive portions not only absorb the electromagnetic waves from the ground terminal but also absorb the transmitted signals of adjacent signal terminals in the left-to-right direction. Therefore, it actually affects the integrity of the signal terminals during high-speed signal transmission.

[0003] Therefore, it is necessary to provide a slot connector that improves signal integrity to overcome the above-mentioned defects. [Utility Model Content]

[0004] In view of the problems in the background technology, the purpose of this utility model is to provide a slot connector that improves signal integrity.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a slot connector, comprising: an insulating shell including a mating surface and a mounting surface, the mating surface having a recessed slot for inserting a mating element, and the mounting surface having a recessed mounting groove communicating with the slot; at least one terminal module, installed in the mounting groove and inserted into the slot, the terminal module including a terminal block and a plastic base injection molded onto the terminal block, the terminal block being disposed on one side of the slot along the front-back direction, including multiple pairs of signal terminals and multiple ground terminals arranged in the left-right direction, and the side of the plastic base near the slot corresponding to the openings having multiple openings exposing the multiple ground terminals, the openings being gradually recessed inward along the front-back direction from one side of the plastic base toward the side near the ground terminals. A conductive loss component, disposed in a mounting groove, includes a main body extending in a left-right direction and a plurality of conductive ribs protruding from the main body in a front-back direction toward a terminal block. The plurality of conductive ribs are spaced apart in the left-right direction and correspond one-to-one with a plurality of grounding terminals in the front-back direction. Each conductive rib includes a connecting portion connected to the main body and an abutting portion extending from the connecting portion in a front-back direction. The abutting portion is gradually recessed inward from the connecting portion toward the grounding terminal in the front-back direction. The abutting portion is inserted into an opening to abut against the grounding terminal. The abutting portion has an abutting surface that abuts against the grounding terminal, and the distance between the edge of the abutting surface and the adjacent signal terminal in the left-right direction is greater than the distance between the connecting portion and the adjacent signal terminal in the left-right direction.

[0006] Furthermore, each signal terminal and each ground terminal has a contact portion, an elastic portion, an embedded portion, and a tail portion. The contact portion protrudes into the slot to mate with the mating element. The elastic portion extends obliquely and connects the embedded portion and the contact portion. The embedded portion is embedded and fixed in the plastic base. The tail portion extends from the lower end of the embedded portion and extends out of the mounting groove. The conductive rib also includes a protrusion extending upward from the top of the abutment portion. The protrusion extends upward beyond the top surface of the plastic base. The protrusion is obliquely arranged along the front-back direction near one side of the ground terminal. A gap is formed between the protrusion and the elastic portion of the ground terminal, and the protrusion is electrically coupled to the ground terminal.

[0007] Furthermore, the width of the protrusion in the left-right direction is greater than the width of the abutment in the left-right direction, and less than or equal to the width of the elastic part of the grounding terminal in the left-right direction. A stepped surface is provided at the connection between the protrusion and the abutment in the left-right direction, and the stepped surface is higher than the top surface of the plastic base.

[0008] Furthermore, the width of the contact surface in the left-right direction is less than the width of the embedded part of the grounding terminal in the left-right direction. The side of the plastic seat away from the slot is provided with multiple grooves corresponding to multiple grounding terminals. The grooves are used to expose the side of the embedded part of the grounding terminal away from the slot. The maximum width of the opening in the left-right direction is less than the width of the groove in the left-right direction, and the height of the opening in the vertical direction is greater than the height of the groove in the vertical direction.

[0009] Furthermore, the slot connector also includes a shielding component disposed between the plastic base and the conductive loss component. The shielding component includes a plate, multiple extensions and multiple inclined portions. The multiple extensions protrude upward from the plate and are spaced apart in the left-right direction. Each extension is disposed between two adjacent conductive ribs and electrically coupled thereto. Each inclined portion extends obliquely from the top of each extension. The multiple extensions correspond to the embedded portions that shield multiple pairs of signal terminals, and the multiple inclined portions correspond to the elastic portions that shield multiple pairs of signal terminals.

[0010] Furthermore, terminal modules are provided on both the front and rear sides of the slot. Each terminal block and the conductive loss component are provided with a shield. Each shield also includes multiple solder feet protruding from the lower end of the plate and exposed in the mounting groove. Each solder foot is located between the tails of two grounding terminals that are opposite each other in the front-rear direction in the two end sub-blocks. The height of the solder foot in the vertical direction is less than the thickness of the horizontal part of the tail of the grounding terminal in the vertical direction. The plate can shield the signal terminal and part of the tail of the grounding terminal in the front-rear direction.

[0011] Furthermore, terminal module conductive loss components are provided on both the front and rear sides of the slot. The elastic part of the signal terminal of each terminal block is closer to the slot in the front-rear direction than the tail of the signal terminal. The embedded part of the signal terminal extends obliquely towards the slot from bottom to top. The distance between the upper ends of the embedded parts of the two sub-blocks is less than the distance between the lower ends of the embedded parts.

[0012] Furthermore, the slot connector also includes an insulating member that fits into the conductive loss member. The insulating member has a mating part on one side facing the terminal block in the front-back direction, and the plastic base has an assembly part corresponding to the mating part on the side facing the insulating member. The assembly part and the mating part cooperate with each other to assemble and fix the insulating member and the plastic base. A positioning post protrudes from one of the opposing sides of the insulating member and the plastic base. The shield has a through hole for the assembly part or the mating part to pass through and a fixing hole for fastening with the positioning post. The positioning post and the fixing hole are fastened to position the shield, so that multiple extensions can be aligned with the embedded part that shields multiple pairs of signal terminals, and multiple inclined parts can be aligned with the elastic part that shields multiple pairs of signal terminals.

[0013] Furthermore, the assembly part is a columnar structure with multiple parts arranged in the left-right direction, the mating part is an open structure with multiple parts corresponding to the assembly part, the positioning post is set on the insulating component, the shielding part has multiple through holes and is aligned with multiple mating parts one by one, so that the assembly part can be inserted into the through holes and mating parts at one time and assembled and fixed with the mating parts.

[0014] Furthermore, the insulating component includes a base and multiple insulating ribs extending upward from the base. The main body of the conductive loss component is embedded in the base, and the multiple conductive ribs and multiple insulating ribs are arranged alternately in the left-right direction. The conductive ribs protrude from the insulating ribs in the front-back direction. Each insulating rib is opposite to an extension in the front-back direction, and the front and back sides of the extension are clamped and fixed by the insulating ribs and the plastic seat, respectively.

[0015] The beneficial effects of this utility model are:

[0016] This invention features a gradually inward-receding abutment portion from the connecting portion towards the grounding terminal, creating a smooth transition from the connecting portion to the abutment portion and a narrower abutment surface compared to existing technologies. This results in a greater distance between the abutment surface and adjacent signal terminals in the left-right direction than the distance between the connecting portion and adjacent signal terminals in the same direction. In other words, the distance between the edge of the abutment surface and adjacent signal terminals in the left-right direction is greater than the distance between the edge of the connecting portion and adjacent signal terminals. This design helps reduce the absorption of transmitted signals from adjacent signal terminals by the conductive ribs, further improving signal integrity. Furthermore, the opening gradually inward-receding from one side of the plastic base towards the grounding terminal in the left-right direction, meaning the opening's outline matches the abutment portion. This allows the opening to guide and cooperate with the abutment portion, facilitating smooth insertion of the abutment surface into the opening and contact with the grounding terminal. The narrower side of the opening near the grounding terminal also restricts the position of the abutment portion in the left-right direction. The conductive ribs abut against the grounding terminal to absorb electromagnetic waves from the grounding terminal, lowering the potential at the grounding terminal's contact point and shifting the resonant point backward, i.e., shifting the resonant frequency to a frequency other than the operating frequency. This further improves the integrity of high-speed signal transmission. [Attached Image Description]

[0017] Figure 1 A perspective view of the slot connector of this utility model installed on a circuit board and mating with a mating component;

[0018] Figure 2 for Figure 1 3D view of the slot connector;

[0019] Figure 3 for Figure 2 Exploded view of the center slot connector;

[0020] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0021] Figure 5 for Figure 3 A three-dimensional view of the components with medium power loss from another perspective;

[0022] Figure 6 for Figure 2Front view of the center slot connector;

[0023] Figure 7 for Figure 6 A sectional view along the BB section line;

[0024] Figure 8 for Figure 7 A magnified view of a section at point F in the middle;

[0025] Figure 9 for Figure 6 A cross-sectional view along the CC section line;

[0026] Figure 10 for Figure 9 A magnified view of a section at point G in the middle;

[0027] Figure 11 for Figure 6 A cross-sectional view along the DD section line;

[0028] Figure 12 for Figure 6 A magnified view of section E with a grounding terminal removed;

[0029] Figure 13 for Figure 3 Assembly diagram of the intermediate terminal module, shielding component, and plug component;

[0030] Figure 14 for Figure 13 A magnified view of a section at point H in the middle;

[0031] Figure 15 for Figure 3 An assembly diagram showing one terminal module assembled to the plug and the other terminal module not assembled to the plug from a top-down view.

[0032] Figure 16 for Figure 2 A partial sectional view along the left-right direction;

[0033] Figure 17 for Figure 8 The image shows only a front view of one terminal module and one shielding component.

[0034] Explanation of icon numbers:

[0035] Slot connector 100 Insulating shell 1 docking surface 11 Slot 111 Mounting surface 12 Mounting slot 121 Side wall 13 Signal slot 131 Grounding groove 132 Barrier 133 Terminal module M Terminal block 2 Signal terminal 2S Grounding terminal 2G Contact Department 21 Elastic part 22 Burial Section 23 Tail 24 Plastic base 3 Covering part 31 Opening 311 Groove 312 Reception port 313 First Assembly Section 32 Elastic hook arm 321 Second Assembly Section 33 Shielding component 4 Plate 41 Fixing hole 411 Via 412 Extension 42 Inclined part 43 Solder foot 44 Plug 5 Insulating component 5a Matrix 51 First Coordination Unit 511 Second Coordination Unit 512 Positioning post 513 Insulating rib 52 Conductive loss component 5b Main body 53 Conductive rib 54 Connecting part 541 Protrusion 542 Contact part 543 Surface 5431 Step surface 544 Metal casing 6 Component 200 Circuit board 300

Detailed Implementation Methods

[0036] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0037] In this utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0038] like Figures 1 to 3 As shown, the slot connector 100 of this utility model is used to transmit high-speed signals, and the slot connector 100 is used for electrical connection with the mating element 200 and the circuit board 300, respectively. That is, the slot connector 100 realizes the electrical connection between the circuit board 300 and the mating element 200, and the slot connector 100 acts as a bridge to transmit electrical signals between the circuit board 300 and the mating element 200. The slot connector 100 is located above the circuit board 300, and the mating element 200 is inserted downwards into the slot connector 100. Specifically, in this embodiment, the slot connector 100 is specifically an MCIO slot connector, and the mating element 200 is specifically an electronic card. Of course, in other embodiments, it can also be other slot connectors such as PCIE, and the mating element 200 can also be a mating connector, which is not limited here.

[0039] like Figure 2 and Figure 3 As shown, the slot connector 100 includes an insulating shell 1 and a terminal module M, a plug 5, a shield 4, and a metal shell 6 disposed within the insulating shell 1. Specifically, there are two terminal modules M, the plug 5 is disposed between the two terminal modules M, and there are also two shields 4. Each shield 4 is sandwiched between a terminal module M and a plug 5. It can be understood that in other embodiments, there may be only one terminal module M and only one shield 4, that is, the plug 5 is disposed on one side of the terminal module M.

[0040] like Figure 3 , Figure 11 and Figure 16As shown, the insulating housing 1 is made of insulating material and includes a mating surface 11 and a mounting surface 12. The mating surface 11 has a recessed slot 111, and the mounting surface 12 has a recessed mounting groove 121 communicating with the slot 111. Specifically, the mating surface 11 and the mounting surface 12 are opposite to each other in the vertical direction Z. The slot 111 and the mounting groove 121 are interconnected in the vertical direction Z. The slot 111 extends upward through the insulating housing 1 and is used to receive the mating element 200. The mounting groove 121 extends downward through the insulating housing 1 to facilitate the installation of the terminal module M. The insulating housing 1 includes two side walls 13 separated by the slot 111 in the front-rear direction Y. Each side wall 13 is provided with multiple signal slots 131, multiple grounding slots 132, and multiple partitions 133. The multiple signal slots 131 and multiple grounding slots 132 are connected to the slot 111 in the front-rear direction Y and connected downward to the mounting groove 121. Adjacent signal slots 131 and grounding slots 132 are separated by partitions 133.

[0041] like Figure 2 and Figure 3 As shown, the terminal module M is housed in the insulating housing 1 and installed in the mounting groove 121 and enters the slot 111. Each terminal module M includes a terminal bar 2 and a plastic base 3 injection molded onto the terminal bar 2. Specifically, there are two terminal modules M. The two terminal bars 2 are located on both sides of the slot 111 along the front-back direction Y. Of course, in other embodiments, when there is only one terminal module M, the terminal bar 2 is located on one side of the slot 111 along the front-back direction Y. Each terminal block 2 includes multiple pairs of signal terminals 2S and multiple ground terminals 2G arranged in the left-right direction X. Each ground terminal 2G and each signal terminal 2S has a contact portion 21, an elastic portion 22, an embedded portion 23 and a tail portion 24. The contact portion 21 protrudes into the slot 111 to mate with the mating element 200. The elastic portion 22 extends obliquely and connects the embedded portion 23 and the contact portion 21. The elastic portion 22 of each terminal block 2 is closer to the slot 111 in the front-back direction Y than the tail portion 24. The embedded portion 23 is embedded and fixed in the plastic base 3. The tail portion 24 extends from the lower end of the embedded portion 23 and protrudes out of the mounting groove 121.

[0042] like Figure 9 and Figure 16As shown, the embedded part 23 extends obliquely from bottom to top toward one side of the slot 111 and connects the elastic part 22 and the tail part 24. The distance between the upper ends of the embedded parts 23 of the two sub-rows 2 is less than the distance between the lower ends. That is, the upper end of the embedded part 23 of the same grounding terminal 2G is closer to the slot 111 than the lower end of the embedded part 23. With this arrangement, the length of the embedded part 23 is the shortest length between the elastic part 22 and the tail part 24, thereby making the signal transmission path the shortest path and improving the signal transmission performance. The signal terminals 2S are arranged in pairs, and the two signal terminals 2S located between two adjacent grounding terminals 2G form a differential signal pair for transmitting differential signals. Differential signals have better anti-common-mode interference capability, and their signal paths are symmetrical, which can better ensure signal integrity and reduce signal attenuation and distortion. Each signal slot 131 contains a pair of signal terminals 2S, and each ground slot 132 contains a ground terminal 2G. The partition 133 separates adjacent signal terminals 2S and ground terminals 2G from each other, which helps to improve the integrity of high-speed signal transmission and reduce electromagnetic interference and crosstalk.

[0043] like Figure 3 , Figure 7 , Figure 8 and Figure 15 The plastic base 3 includes a covering part 31 and multiple assembly parts. Specifically, the assembly parts include multiple first assembly parts 32 and multiple second assembly parts 33. The first assembly parts 32 and the second assembly parts 33 are both protruding from the side of the covering part 31 facing the slot 111. The embedded part 23 is embedded in the covering part 31. The side of the covering part 31 facing the slot 111 is recessed with multiple openings 311. The side of the covering part 31 away from the slot is recessed with multiple grooves 312. The openings 311 and grooves 312 that are opposite each other in the front-back direction Y expose the front and back sides of the corresponding grounding terminal 2G embedded part 23. Each opening 311 exposes part of the corresponding grounding terminal 2G embedded part 23. The maximum width of the opening 311 in the left-right direction X is less than the width of the groove 312 in the left-right direction X, and the height of the opening 311 in the up-down direction Z is greater than the height of the groove 312 in the up-down direction Z. The side of the covering part 31 facing the slot 111 is also provided with receiving holes 313. The two receiving holes 313 are specifically located at the left and right ends of the covering part 31 below the opening 311, and the receiving holes 313 do not expose the terminal block 2. The opening 311 is gradually recessed inward along the front-back direction Y from one side of the plastic base 3 toward the side close to the grounding terminal 2G. The first assembly part 32 and the second assembly part 33 are both cylindrical structures and are spaced apart along the left-right direction X. The second assembly part 33 is located between two adjacent first assembly parts 32. Specifically, the first assembly part 32 includes two elastic hook arms 321, and the second assembly part 33 is cylindrical.

[0044] like Figure 3 and Figure 13As shown, the plug 5 is disposed in the mounting groove 121 and located between the two rows of terminal modules M. The plug 5 includes an insulating member 5a and a conductive loss member 5b disposed on the insulating member 5a. The insulating member 5a is made of insulating material, and the conductive loss member 5b is an electrically dissipative material, specifically a conductive plastic material. Specifically, there are two conductive loss members 5b, each corresponding to one terminal row 2. Of course, in other embodiments, two conductive loss members 5b can also be combined into one conductive loss member 5b, which is not specifically limited here.

[0045] like Figure 3 , Figure 9 as well as Figure 16 As shown, the insulating member 5a includes a base 51 and a plurality of insulating ribs 52 protruding upward from the top surface of the base 51. The plurality of insulating ribs 52 are arranged in two rows corresponding to the front and rear sides of the base 51, and each insulating rib 52 is provided with a pair of embedded portions 23 of signal terminals 2S. The base 51 is provided with a plurality of mating portions, which are open-hole structures. Specifically, the mating portions include a plurality of first mating portions 511 and a plurality of second mating portions 512 arranged at intervals along the left and right direction X on the front and rear sides of the base 51. Both the first mating portions 511 and the second mating portions 512 are open-hole structures. Specifically, the first mating portions 511 are stepped hole structures, and the two oppositely arranged second mating portions 512 are interconnected. In other embodiments, the structures of the first assembly part 32 and the first mating part 511 can be interchanged, and the structures of the second assembly part 33 and the second mating part 512 can also be interchanged. That is, the first assembly part 32 and the second assembly part 33 are open-hole structures, and the first mating part 511 and the second mating part 512 are columnar structures. Alternatively, one of the first assembly part 32 or the second assembly part 33 may be an open-hole structure and the other may be a columnar structure. This is not limited here and can be selected according to the actual situation.

[0046] like Figure 15As shown, specifically, the first mating part 511 engages with the first assembly part 32. The two elastic hook arms 321 of the first assembly part 32 extend into the first mating part 511 and engage with the inner wall surface of the first mating part 511 in the front-rear direction Y to limit the elastic hook arms 321 from exiting. The second mating part 512 and the second assembly part 33 are tightly engaged, that is, they are interfering with each other. In this way, the engagement of the first mating part 511 and the first assembly part 32 can prevent the plastic seat 3 from exiting the plug 5, and the interference of the second mating part 512 and the second assembly part 33 can ensure the stability of the plastic seat 3 and the plug 5 and prevent them from loosening. The side of the base 51 facing the plastic seat 3 is also provided with two positioning posts 513. Specifically, the two positioning posts 513 are separated by the first mating part 511 and the second mating part 512 respectively. That is, the two positioning posts 513 are located at the left and right ends of the plug 5. In other embodiments, one positioning post 513 can also be provided. One positioning post 513 can be provided in the center of the plug 5 and can be arranged in a long strip shape. Of course, the positioning post 513 can also be provided on the plastic seat 3. This is not limited here.

[0047] like Figure 3 and Figure 13 As shown, conductive loss components 5b are disposed on the plug 5. Each conductive loss component 5b includes a main body 53 and a plurality of conductive ribs 54 protruding upward from the main body 53 and towards one side of the grounding terminal 2G. The main body 53 is disposed on the base 51. The plurality of conductive ribs 54 and the plurality of insulating ribs 52 are alternately arranged along the left-right direction X, and the second conductive rib 54 protrudes more than the insulating rib 52 along the front-back direction Y. Specifically, in the manufacturing process, the insulating component 5a can be injection molded first, and then the conductive loss component 5b can be injection molded on the insulating component 5a to form the plug 5; or, the conductive loss component 5b can be injection molded first, and then the insulating component 5a can be injection molded on the conductive loss component 5b to form the plug 5; or, the conductive loss component 5b and the insulating component 5a can be molded separately and then assembled into one piece to form the plug 5. No specific limitation is made here.

[0048] like Figure 4 , Figure 7 as well as Figure 8As shown, each conductive rib 54 includes a connecting portion 541, an abutting portion 543, and a protruding portion 542. The connecting portion 541 is connected to the main body portion 53. The abutting portion 543 extends along the front-rear direction Y and is formed on the side of the connecting portion 541 near the grounding terminal 2G. The abutting portion 543 is used to extend into the opening 311 of the plastic base 3 and make electrical contact with the embedded portion 23 of the corresponding grounding terminal 2G. Specifically, the abutting portion 543 is gradually recessed from the connecting portion 541 towards the grounding terminal 2G along the front-rear direction Y. The abutting portion 543 is used to insert into the opening 311 to abut against the grounding terminal 2G. The outline of the opening 311 matches the outline of the abutting portion 543. In this way, the opening 311 can not only guide the abutting portion 543 to be inserted, but also limit the abutting portion 543 on the side of the opening 311 near the grounding terminal 2G.

[0049] like Figures 6 to 8 as well as Figure 10 As shown, each abutment portion 543 is provided with an abutment surface 5431. The distance D1 between the abutment surface 5431 and the adjacent signal terminal 2S in the left-right direction X is greater than the distance D2 between the connection portion 541 and the adjacent signal terminal 2S in the left-right direction X, that is, D1>D2. This helps to reduce the absorption of the transmission signal of the signal terminal 2S by the conductive rib 54 and improve the integrity of high-speed signal transmission. The protrusion 542 protrudes upward from the top surface of the abutment 543, extending beyond the plastic base 3. The protrusion 542 is used to electrically couple with the elastic part 22 of the corresponding grounding terminal 2G. The protrusion 542 is inclined along the front-rear direction Y to the side of the grounding terminal 2G. A gap P is formed between the protrusion 542 and the elastic part 22 of the grounding terminal 2G, and the protrusion 542 is electrically coupled to the grounding terminal 2G. The arrangement of the protrusion 542 in the front-rear direction Y increases the area of ​​the conductive rib 54 facing the grounding terminal 2G, so that the conductive rib 54 can absorb more electromagnetic waves between the signal terminals 2S, thereby further improving the signal integrity of the electrical connector.

[0050] like Figure 5 as well as Figure 14 As shown, the width of the protrusion 542 along the left-right direction X is greater than the width of the abutment 543 along the left-right direction X, and less than or equal to the width of the elastic part 22 of the grounding terminal 2G along the left-right direction X. Since there is gap coupling between the protrusion 542 and the elastic part 22 of the grounding terminal 2G, while there is contact coupling between the abutment 543 and the embedded part 23 of the grounding terminal 2G, this facilitates better absorption of electromagnetic waves at the elastic part 22 of the grounding terminal 2G by the protrusion 542. A stepped surface 544 is provided at the connection between the protrusion 542 and the abutment 543 in the left-right direction X. The stepped surface 544 is higher than the top surface of the plastic base 3, so that the protrusion 542 will not affect the insertion of the abutment 543 into the opening 311.

[0051] like Figure 5 , Figure 7 , Figure 8 as well as Figure 13 As shown, the width of the contact surface 5431 in the left-right direction X is smaller than the width of the grounding terminal 2G in the left-right direction X, and the width of the contact surface 5431 in the left-right direction X is smaller than the width of the embedded part 23 of the grounding terminal 2G in the left-right direction X. This makes the distance D1 between the edge of the contact surface 5431 in the left-right direction X and the adjacent signal terminal 2S larger, which is more conducive to avoiding the absorption of the transmitted signal of the signal terminal 2S by the conductive loss component 5b. Since the conductive rib 54 needs to be inserted into the plastic base 3 and abut against the embedded part 23 of the grounding terminal 2G, an opening 311 for the conductive rib 54 to be inserted needs to be provided on the side of the plastic base 3 facing the slot 111. The opening 311 is formed by the positioning part of the injection mold abutting against the grounding terminal 2G during the injection process and pulling out the positioning part after the injection is completed. However, if only one side of the grounding terminal 2G is abutted by the positioning part during the injection process, it is easy for the grounding terminal 2G to shift during the injection. Therefore, both sides of the grounding terminal 2G need to be abutted by the positioning part. Therefore, a groove 312 is provided on the side of the plastic base 3 away from the slot 111, which is formed by the positioning part abutting and then pulling out. The positioning of both sides of the embedded part 23 of the grounding terminal 2G can effectively prevent the grounding terminal 2G from shifting under the high pressure of the injection. Specifically, the maximum width of the opening 311 in the left-right direction X is less than the width of the groove 312 in the left-right direction X, and the height of the opening 311 in the up-down direction Z is greater than the height of the groove 312 in the up-down direction Z.

[0052] like Figure 3 , Figure 13 and Figure 15 As shown, the shielding component 4 is clamped and fixed between the plastic base 3 and the plug 5. Each shielding component 4 includes a plate 41, multiple extensions 42, multiple inclined portions 43, and multiple solder feet 44. The plate 41 extends along the left-right direction X and the up-down direction Z. The multiple extensions 42 extend upward from the plate 41 and are spaced apart along the left-right direction X. Each inclined portion 43 extends inclinedly from the top of the corresponding extension 42 and extends beyond the top surface of the plastic base 3. The solder feet 44 extend downward from the lower end of the plate 41 and are exposed in the mounting groove 121. The plate 41 is provided with a through hole 412 for the first assembly part 32 and the second assembly part 33 to pass through, and a fixing hole 411 for fastening with the positioning post 513. The positioning post 513 and the fixing hole 411 are fastened to each other to assemble and position the shield 4. Specifically, the first assembly part 32 and the second assembly part 33 need to pass through the corresponding through hole 412 and be inserted into the first mating part 511 and the second mating part 512. The first assembly part 32 and the second assembly part 33 are loosely fitted with the through hole 412.

[0053] like Figure 13 , Figure 14 and Figure 15As shown, each extension 42 is clamped and fixed on its front and rear sides by insulating ribs 52 and plastic bases 3, respectively. In this way, the insulating ribs 52 and plastic bases 3 together support the shielding member 4 on the front and rear sides, preventing the extension 42 from tilting to one side of the slot 111 when assembled upwards. Each conductive rib 54 passes through the gap between two adjacent extensions 42 to electrically couple with the grounding terminal 2G. Multiple extensions 42 and multiple connecting parts 541 are arranged alternately. The close distance between the extensions 42 and the adjacent connecting parts 541 allows them to achieve electrical coupling. The plate 41 and the extensions 42 isolate the main body 54 of the conductive loss member 5b from the embedded part 23 of the signal terminal 2S, thus preventing the main body 54 from absorbing the transmitted signal of the signal terminal 2S. The width of the extension 42 in the left-right direction X is greater than the width of the inclined portion 43 in the left-right direction X. The extension 42 is accommodated in the mounting groove 121 for shielding the embedded portion 23 of a pair of signal terminals 2S. This facilitates the inclined portion 43 to extend into the signal groove 131. The partitions 133 on both sides of the signal groove 131 restrict the position of the inclined portion 43 in the left-right direction X, so that the inclined portion 43 can be aligned to shield the pair of signal terminals 2S. The tilting direction of the inclined portion 43 is the same as that of the elastic portion 22. The inclined portion 43 is housed in the signal slot 131 to shield the elastic portion 22 of a pair of signal terminals 2S. The protrusion 542 and the inclined portion 43 are arranged alternately. The height of the inclined portion 43 is higher than that of the protrusion 542. The protrusion 542 needs to be electrically coupled to the elastic portion 22. Therefore, the protrusion 542 is closer to the elastic portion 22 of the grounding terminal 2G in the front-back direction Y than the inclined portion 43. So the height of the protrusion 542 is limited by the turning point between the elastic portion 22 of the grounding terminal 2G and the embedded portion 23. The distance between the inclined portion 43 and the elastic portion 22 of the grounding terminal 2G in the front-back direction is greater. Therefore, the inclined portion 43 can extend higher along the tilting direction of the elastic portion 22 without blocking the elastic displacement of the elastic portion 22. In this way, while ensuring that the elastic portion 22 has sufficient elastic deformation space, the height of the inclined portion 43 can be set higher, so that the shielding area of ​​the elastic portion 22 of the grounding terminal 2G is larger.

[0054] like Figure 6 , Figure 12 and Figure 17 As shown, each solder foot 44 extends along the vertical direction Z and is located between the tails 24 of the two opposite grounding terminals 2G in the two end sub-bars 2. The solder foot 44 and the tails 24 of the grounding terminals 2G are soldered together on the circuit board 300. The height W1 of the solder foot 44 in the vertical direction Z is less than the thickness W2 of the tails 24 of the grounding terminals 2G in the vertical direction Z. The board body 41 shields part of the tails 24 of the signal terminal 2S in the front-back direction Y.

[0055] like Figure 3 , Figure 13 as well as Figure 15As shown, specifically, during assembly, the shield 4 is pre-fixed to the positioning post 513 of the plug 5 through the fixing hole 411, so that the through hole 412 on the shield 4 can correspond to the corresponding first mating part 511. Thus, when the terminal module M is installed, the first assembly part 32 and the second assembly part 33 on the plastic base 3 can be inserted into the corresponding through hole 412 at one time into the first mating part 511 and the second mating part 512, thereby fixing the plastic base 3 to the plug 5. At the same time, the part of the positioning post 513 of the plug 5 that protrudes from the shield 4 after being tightly fitted with the fixing hole 411 can be received by the receiving hole 313, making the fit between the positioning post 513 and the fixing hole 411 more stable, and facilitating the clamping and fixing of the shield 4 between the plastic base 3 and the plug 5.

[0056] like Figure 2 and Figure 3 As shown, the metal housing 6 is mounted on the insulating housing 1 and fixed to the circuit board 300, which can effectively shield the external electromagnetic field interference of the slot connector 100 and prevent the internal signal from interfering with the external environment.

[0057] This utility model has the following beneficial effects:

[0058] 1. This utility model gradually narrows the abutment portion 543 from the connection portion 541 in the front-back direction Y toward the grounding terminal 2G, so as to form a smooth transition from the connection portion 541 to the abutment portion 543 and a narrower abutment surface 5431 compared with the prior art. This makes the distance D1 between the abutment surface 5431 and the adjacent signal terminal 2S in the left-right direction X greater than the distance D2 between the connection portion 541 and the adjacent signal terminal 2S in the left-right direction X, that is, D1>D2. This arrangement helps to reduce the absorption of the transmission signal of the adjacent signal terminal 2S by the conductive rib 54, and further improves the integrity of high-speed signal transmission. Furthermore, the opening 311 is gradually recessed inward along the front-to-back direction Y from one side of the plastic base 3 toward the side near the grounding terminal 2G. That is, the outline of the opening 311 matches the abutment portion 543. This allows the opening 311 to guide and engage with the abutment portion 543, facilitating the smooth insertion of the abutment surface 5431 into the opening 311 to contact the grounding terminal 2G. The narrower side of the opening 311 near the grounding terminal 2G also restricts the position of the abutment portion 543 in the left-to-right direction X. The conductive rib 54 abuts against the grounding terminal 2G to absorb electromagnetic waves from the grounding terminal 2G, reducing the potential at the junction of the grounding terminal 2G and causing the resonant point to shift backward, i.e., the resonant frequency to a frequency other than the operating frequency, thus improving signal integrity.

[0059] 2. A protrusion 542 is added in the vertical direction Z to be gap-coupled with the elastic part 22 of the grounding terminal 2G. The gap setting not only ensures that the elastic part 22 of the grounding terminal 2G has space for elastic deformation, but also the electrical coupling between the protrusion 542 and the elastic part 22 of the grounding terminal 2G allows the conductive rib 54 to absorb the electromagnetic waves of the elastic part 22 of the grounding terminal 2G, and also avoids absorbing the transmission signals of the adjacent signal terminals 2S, thereby further improving the signal integrity of the electrical connector.

[0060] 3. Since the protrusion 542 is gap-coupled with the elastic part 22 of the grounding terminal 2G, while the abutment part 543 is contact-coupled with the embedded part 23 of the grounding terminal 2G, the width of the protrusion 542 in the left-right direction X is greater than the width of the abutment part 543 in the left-right direction X, and less than or equal to the width of the elastic part 22 of the grounding terminal 2G in the left-right direction X. This is beneficial for the protrusion 542 to better absorb electromagnetic waves at the elastic part 22 of the grounding terminal 2G. A stepped surface 544 is provided at the connection between the protrusion 542 and the abutment part 543 in the left-right direction X. The stepped surface 544 is higher than the top surface of the plastic base 3, so that the protrusion 542 will not affect the insertion of the abutment part 543 into the opening 311.

[0061] 4. The width of the contact surface 5431 in the left-right direction X is smaller than the width of the embedded part 23 of the grounding terminal 2G in the left-right direction X. This makes the distance between the edge of the contact surface 5431 in the left-right direction X and the adjacent signal terminal 2S larger, which is more conducive to avoiding the absorption of the transmitted signal of the signal terminal 2S by the conductive loss component 5b. Since the conductive rib 54 needs to be inserted into the plastic base 3 and abut against the embedded part 23 of the grounding terminal 2G, an opening 311 for inserting the conductive rib 54 needs to be provided on the side of the plastic base 3 facing the slot 111. The opening 311 is formed by injection molding after the jig abuts against the grounding terminal 2G. However, if one side of the plastic base 3 is abutted by the jig, the grounding terminal 2G is easily offset relative to the signal terminal 2S during injection molding. Therefore, the side of the plastic base 3 away from the slot 111 is provided with a groove 312 formed by abutting against the jig. The maximum width of the opening 311 in the left-right direction X is less than the width of the groove 312 in the left-right direction X, and the height of the opening 311 in the up-down direction Z is greater than the height of the groove 312 in the up-down direction Z. With this arrangement, the opening 311 and the groove 312 will not completely expose the front and rear sides of the embedded part 23 of the grounding terminal 2G.

[0062] 5. A shielding component 4 is provided between the plastic base 3 and the conductive loss component 5b to achieve electromagnetic shielding. The multiple extensions 42 of the shielding component 4 correspond to the embedded portions 23 of multiple pairs of signal terminals 2S, and the multiple inclined portions 43 correspond to the elastic portions 22 of the signal terminals 2S. The setting of the inclined portions 43 increases the overall shielding area of ​​the signal terminals 2S in the vertical extension direction. Thus, the shielding effect of the slot connector 100 is better, which can effectively isolate crosstalk between adjacent signal terminals 2S and make the signal integrity better in high-speed signal transmission.

[0063] 6. A shielding element 4 is provided between each terminal module M and the conductive loss component 5b. This enhances the electromagnetic shielding between the two rows of terminal modules M, reduces crosstalk and EMI, and optimizes the grounding path. The shielding element 4 has solder feet 44 corresponding to the tail 24 of the grounding terminal 2G, and the shielding element 4 is also soldered onto the circuit board 300, thus forming a low-impedance independent grounding path. The height of the solder feet 44 in the vertical direction Z is less than the thickness of the horizontal portion of the tail 24 of the signal terminal 2S in the vertical direction Z. The board body 41 can shield part of the tail 24 of the signal terminal 2S and the grounding terminal 2G in the front-back direction Y, thus further enhancing electromagnetic shielding and reducing crosstalk and EMI.

[0064] 7. The elastic part 22 of the signal terminal 2S is closer to the slot 111 in the front-to-back direction Y than the tail part 24 of the signal terminal 2S. The signal embedding part 23 extends obliquely from bottom to top toward the slot 111 and connects the signal elastic part 22 and the signal tail 24. The distance between the upper ends of the embedding parts 23 in the two sub-rows 2 is less than the distance between the lower ends of the embedding parts 23. The length of the embedding part 23 of the signal terminal 2S is set to be the shortest length between the elastic part 22 and the tail 24, so that the transmission path of the embedding part 23 is also the shortest path, thereby improving the signal transmission performance of the signal terminal 2S.

[0065] 8. The shielding component 4 is fastened to the positioning post 513 through the fixing hole 411 to assemble and position the shielding component 4, so that the shielding component 4 can be pre-positioned on one of the insulating component 5a or the plastic base 3. In this way, the shielding component 4 will not shift relative to the insulating component 5a or the plastic base 3 that it is positioned with. Then, the insulating component 5a and the plastic base 3 are assembled and fixed together by the interlocking parts of the assembly part and the mating part, and the shielding component 4 is sandwiched between the plastic base 3 and the insulating component 5a. This allows the multiple extensions 42 of the shielding component 4 to be aligned with the embedded part 23 of the multiple pairs of signal terminals 2S, and the multiple inclined parts 43 to be aligned with the elastic part 22 of the multiple pairs of signal terminals 2S. This makes the shielding effect of the slot connector 100 better, effectively isolates crosstalk between adjacent signal terminals 2S, and improves signal integrity in high-speed signal transmission.

[0066] 9. The assembly part is a column structure, and the mating part is an open structure. The column structure and the open mating structure are simple and easy to manufacture. The positioning post 513 is set on the insulating member 5a, that is, the shield 4 is pre-fixed on the insulating member 5a. The through hole 412 of the shield 4 can be aligned with the first mating part. Then the terminal module M is installed on the insulating member 5a so that the assembly part can be inserted into the through hole 412 and the mating part at one time and installed and mated with the mating part, thus simplifying the installation steps.

[0067] 10. Each extension 42 of the shielding member 4 is clamped and fixed on the front and rear sides by the corresponding insulating rib 52 and plastic seat 3 of the insulating member 5a, so that the insulating rib 52 and plastic seat 3 together support the shielding member 4 on the front and rear sides, which can prevent the extension 42 from tilting to one side of the slot 111 when it is assembled upward.

[0068] The above detailed description is only a description of the preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. A slot connector, characterized in that, include: An insulating housing includes a mating surface and a mounting surface. The mating surface is recessed with a slot for inserting a mating element, and the mounting surface is recessed with a mounting groove communicating with the slot. At least one terminal module is installed in the mounting slot and enters the slot. The terminal module includes a terminal block and a plastic base injection molded on the terminal block. The terminal block is located on one side of the slot in the front-back direction and includes multiple pairs of signal terminals and multiple ground terminals arranged in the left-right direction. The side of the plastic base near the slot has multiple openings that expose the multiple ground terminals. The openings are gradually recessed in the front-back direction from one side of the plastic base toward the side near the ground terminals. A conductive loss component, disposed in a mounting groove, includes a main body extending in a left-right direction and a plurality of conductive ribs protruding from the main body in a front-back direction toward a terminal block. The plurality of conductive ribs are spaced apart in the left-right direction and correspond one-to-one with a plurality of grounding terminals in the front-back direction. Each conductive rib includes a connecting portion connected to the main body and an abutting portion extending from the connecting portion in a front-back direction. The abutting portion is gradually recessed inward from the connecting portion toward the grounding terminal in the front-back direction. The abutting portion is inserted into an opening to abut against the grounding terminal. The abutting portion has an abutting surface that abuts against the grounding terminal, and the distance between the edge of the abutting surface and the adjacent signal terminal in the left-right direction is greater than the distance between the connecting portion and the adjacent signal terminal in the left-right direction.

2. The slot connector as described in claim 1, characterized in that: Each signal terminal and each ground terminal has a contact portion, an elastic portion, an embedded portion, and a tail portion. The contact portion protrudes into the slot to mate with the mating element. The elastic portion extends obliquely and connects the embedded portion and the contact portion. The embedded portion is embedded and fixed in the plastic base. The tail portion extends from the lower end of the embedded portion and extends out of the mounting groove. The conductive rib also includes a protrusion extending upward from the top of the abutment portion. The protrusion extends upward beyond the top surface of the plastic base. The protrusion is obliquely arranged along the front-back direction near one side of the ground terminal. A gap is formed between the protrusion and the elastic portion of the ground terminal, and the protrusion is electrically coupled to the ground terminal.

3. The slot connector as described in claim 2, characterized in that: The width of the protrusion in the left-right direction is greater than the width of the abutment in the left-right direction, and less than or equal to the width of the elastic part of the grounding terminal in the left-right direction. A stepped surface is provided at the connection between the protrusion and the abutment in the left-right direction, and the stepped surface is higher than the top surface of the plastic base.

4. The slot connector as described in claim 2, characterized in that: The width of the contact surface in the left-right direction is less than the width of the embedded part of the grounding terminal in the left-right direction. The side of the plastic seat away from the slot is provided with multiple grooves corresponding to multiple grounding terminals. The grooves are used to expose the side of the embedded part of the grounding terminal away from the slot. The maximum width of the opening in the left-right direction is less than the width of the groove in the left-right direction, and the height of the opening in the vertical direction is greater than the height of the groove in the vertical direction.

5. The slot connector as described in claim 2, characterized in that: The slot connector also includes a shielding component disposed between the plastic base and the conductive loss component. The shielding component includes a plate, multiple extensions and multiple inclined portions. The multiple extensions protrude upward from the plate and are spaced apart in the left-right direction. Each extension is disposed between two adjacent conductive ribs and electrically coupled thereto. Each inclined portion extends obliquely from the top of each extension. The multiple extensions correspond to the embedded portions that shield multiple pairs of signal terminals, and the multiple inclined portions correspond to the elastic portions that shield multiple pairs of signal terminals.

6. The slot connector as described in claim 5, characterized in that: Terminal modules are provided on both the front and rear sides of the slot. Each terminal block and the conductive loss component are provided with a shield. Each shield also includes multiple solder feet protruding from the lower end of the plate and exposed in the mounting groove. Each solder foot is located between the tails of two grounding terminals that are opposite each other in the front-rear direction in the two end sub-blocks. The height of the solder foot in the vertical direction is less than the thickness of the horizontal part of the tail of the grounding terminal in the vertical direction. The plate can shield the signal terminal and part of the tail of the grounding terminal in the front-rear direction.

7. The slot connector as described in claim 5, characterized in that: The slot has terminal module conductive loss components on both the front and back sides. The elastic part of the signal terminal of each terminal block is closer to the slot in the front-back direction than the tail of the signal terminal. The embedded part of the signal terminal extends obliquely towards the slot from bottom to top. The distance between the upper ends of the embedded parts of the two sub-blocks is less than the distance between the lower ends of the embedded parts.

8. The slot connector as claimed in claim 5, characterized in that: The slot connector also includes an insulating member that fits into the conductive loss member. The insulating member has a mating part on one side facing the terminal block in the front-back direction. The plastic base has an assembly part corresponding to the mating part on the side facing the insulating member. The assembly part and the mating part cooperate with each other to assemble and fix the insulating member and the plastic base. A positioning post protrudes from one of the opposing sides of the insulating member and the plastic base. The shield has a through hole for the assembly part or the mating part to pass through and a fixing hole for fastening with the positioning post. The positioning post and the fixing hole are fastened to position the shield, so that multiple extensions can be aligned with the embedded part of the shielding multiple pairs of signal terminals, and multiple inclined parts can be aligned with the elastic part of the shielding multiple pairs of signal terminals.

9. The slot connector as claimed in claim 8, characterized in that: The assembly part is a columnar structure with multiple parts along the left and right direction. The mating part is an open structure with multiple parts corresponding to the assembly part. The positioning post is set on the insulating component. The shielding part has multiple through holes and is aligned with multiple mating parts one by one, so that the assembly part can be inserted into the through holes and mating parts at one time and assembled and fixed with the mating parts.

10. The slot connector as claimed in claim 8, characterized in that: The insulating component includes a base and multiple insulating ribs extending upward from the base. The main body of the conductive loss component is embedded in the base, and the multiple conductive ribs and multiple insulating ribs are arranged alternately in the left-right direction. The conductive ribs protrude from the insulating ribs in the front-back direction. Each insulating rib is opposite to an extension in the front-back direction, and the front and back sides of the extension are clamped and fixed by the insulating ribs and the plastic seat, respectively.

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