A backplane connector shield to improve connector crosstalk performance
By optimizing the connection structure between the single board and the backplane, and adopting a connection end, protrusion, and fisheye mechanism, the problems of long distance between the fisheye and the slot contact and unreliable contact were solved, resulting in a shorter return path and better anti-crosstalk performance.
Patent Information
- Application Number
- CN202521372059.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-01
- Publication Date
- 2026-07-03
- Estimated Expiration
- 2035-07-01
AI Technical Summary
In existing high-speed connectors, the distance between the fisheye and the slot contact is relatively large and the contact is unreliable, resulting in a long return path, increased mutual inductance between differential pairs, and deterioration of crosstalk performance.
Design a backplane connector shielding sheet. By setting a connection end, a protrusion, and a fisheye mechanism on the single board, and setting a socket and mounting hole on the backplane, the interference contact between the protrusion and the socket and the locking block is achieved, and the mating structure between the fisheye and the slot is optimized.
It effectively ensures contact reliability, shortens the return path, reduces mutual inductance between differential pairs, and improves anti-crosstalk performance.
Smart Images
Figure CN224458844U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector technology, and in particular to a backplane connector shielding sheet for improving connector crosstalk performance. Background Technology
[0002] High-speed connectors are widely used in communication technology. They are a common type of connector used in large communication equipment, ultra-high performance servers and supercomputers, industrial computers, and high-end storage devices. Their main function is to connect single boards and backplanes, with the single boards and backplanes forming a 90-degree vertical structure, to transmit high-speed differential signals or single-ended signals and to transmit large currents.
[0003] High-speed connectors are typically composed of multiple signal modules stacked together. In high-speed connector design, as transmission rates increase, higher demands are placed on the connector's electrical performance, especially electromagnetic crosstalk, which has always plagued high-speed connector design. This necessitates effective shielding and grounding in the product design; such as... Figure 1 and Figure 2 As shown, Figure 1 In the single-layer board, the fisheye 1.1 is warped at a certain angle, and the structures of two adjacent fisheyes form a figure-eight shape. Figure 2 The backplane has multiple slots 2.1, whose structure matches the fisheye 1.1. This results in a longer contact distance between the fisheye 1.1 and the slot 2.1, leading to a longer return path, which increases the mutual inductance of the differential pair and deteriorates the crosstalk performance. At the same time, the contact between the fisheye 1.1 and the slot 2.1 is unreliable. Due to the dimensional accuracy of the slot 2.1, out-of-tolerance dimensions of the slot 2.1 can cause contact breakage, further worsening the crosstalk. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a backplane connector shielding sheet to improve the crosstalk performance of the connector, so as to solve the problems of the long contact distance between the fisheye 1.1 and the slot 2.1, unreliable contact, long return path, increased mutual inductance of differential pair, and deterioration of crosstalk performance.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] A backplane connector shielding sheet for improving connector crosstalk performance includes a single board and a backplane. One end of the single board is integrally formed with a connecting end, and the single board is connected to the backplane through the connecting end. One side of the connecting end is integrally formed with multiple protrusions, and one side of the connecting end is integrally formed with multiple fisheye mechanisms. The fisheye mechanisms are arranged along the horizontal direction of the connecting end. The backplane has multiple insertion holes in the middle that mate with the protrusions, and mounting holes that mate with the fisheye mechanisms are provided in the middle of both sides of the insertion holes.
[0007] Furthermore, the single plate and the back plate are arranged vertically.
[0008] Furthermore, the plurality of protrusions are arranged at equal intervals.
[0009] Furthermore, a slot is provided at the middle of the end of the protrusion away from the connecting end.
[0010] Furthermore, the fisheye mechanism includes two first fisheyes and multiple second fisheyes, with the two first fisheyes being integrally formed at both ends of the connecting end.
[0011] Furthermore, each pair of second fisheyes forms a group, and multiple groups of second fisheyes are integrally formed in the middle of the connecting end, with each group of second fisheyes located between two adjacent protrusions.
[0012] Furthermore, the sockets in adjacent layers are staggered, and a locking block is integrally formed in the middle of the inner wall of each socket.
[0013] Furthermore, the card block and the card slot are aligned, and the card block is engaged inside the card slot.
[0014] Furthermore, the end of the first fisheye furthest from the connecting end and the end of the second fisheye furthest from the connecting end are both inserted into the corresponding mounting holes and extend to the outside.
[0015] The beneficial effects of this utility model are:
[0016] This invention features a connecting end on a single board, with a protrusion on one side and a slot in the middle of one side of the protrusion. First fisheyes are located on both sides of the connecting end, and a straight second fisheye is located between adjacent protrusions. A socket that mates with the protrusion is located on the back plate, containing a locking block that mates with the slot and a mounting hole that mates with the fisheye mechanism. The interference contact between the protrusion, slot, socket, and locking block effectively ensures reliable contact, resulting in a shorter return path, lower mutual inductance between differential pairs, and superior anti-crosstalk performance. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of an existing single-board structure;
[0019] Figure 2 This is a schematic diagram of the existing backplate structure;
[0020] Figure 3 This is a schematic diagram of the main structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the connection structure between the single plate and the back plate of this utility model;
[0022] Figure 5 This is a side view diagram of the single-board structure of this utility model;
[0023] Figure 6 This is a side view of the back panel structure of this utility model;
[0024] Figure 7 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.
[0025] The markings in the diagram are as follows: 1. Single board; 101. Connecting end; 102. Protrusion; 103. Slot; 104. First fisheye; 105. Second fisheye; 2. Back plate; 201. Insertion hole; 202. Locking block; 203. Mounting hole. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0027] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.
[0028] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.
[0029] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0030] Please see Figures 3-7As shown, a backplane connector shielding sheet for improving connector crosstalk performance includes a single board 1 and a backplane 2. One end of the single board 1 is integrally formed with a connecting end 101, and the single board 1 is connected to the backplane 2 through the connecting end 101. A plurality of protrusions 102 are integrally formed on one side of the connecting end 101, and a plurality of fisheye mechanisms are integrally formed on one side of the connecting end 101. The fisheye mechanisms are arranged along the horizontal direction of the connecting end 101. The middle of the backplane 2 is provided with a plurality of sockets 201 that cooperate with the protrusions 102. The middle of both sides of the sockets 201 is provided with mounting holes 203 that cooperate with the fisheye mechanisms. The fisheye mechanisms are straight. The fisheye mechanisms and the protrusions 102 can cooperate with the sockets 201 and the mounting holes 203 to form interference contact, which can effectively ensure contact reliability.
[0031] Specifically, such as Figure 3 , Figure 4 and Figure 5 As shown, the single board 1 and the back plate 2 are arranged vertically; multiple protrusions 102 are arranged at equal intervals; a slot 103 is provided in the middle of the end of the protrusion 102 away from the connecting end 101; wherein the slot 103 is U-shaped, and the protrusion 102 can be inserted into the socket 201 and contact it.
[0032] Specifically, such as Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the fisheye mechanism includes two first fisheyes 104 and multiple second fisheyes 105. The two first fisheyes 104 are integrally formed at both ends of the connecting end 101. Each pair of second fisheyes 105 forms a group, and multiple groups of second fisheyes 105 are integrally formed in the middle of the connecting end 101. Each group of second fisheyes 105 is located between two adjacent protrusions 102. The ends of the first fisheyes 104 and the second fisheyes 105 that are away from the connecting end 101 are both inserted into the corresponding mounting holes 203 and extend to the outside. The two first fisheyes 104 and the multiple second fisheyes 105 can cooperate with the conductive connection holes of the PCB board to increase the contact area, reduce contact resistance and heat generation, and improve the reliability of signal transmission.
[0033] Specifically, such as Figure 3 , Figure 4 and Figure 6 As shown, the two adjacent sockets 201 are staggered, and a locking block 202 is integrally formed in the middle of the inner wall of the socket 201; the locking block 202 is engaged with the slot 103, and the locking block 202 is engaged inside the slot 103; wherein the locking block 202 can engage with the slot 103, increasing the contact area between the single board 1 and the back plate 2, while also ensuring the reliability of the connection between the two, making its return path shorter, the mutual inductance of the differential pair smaller, and its anti-crosstalk performance better.
[0034] In summary, compared with the prior art, this connector shield has at least the following beneficial effects: By setting a connection end 101 on the single board 1, a protrusion 102 is provided on one side of the connection end 101, a slot 103 is provided in the middle of one side of the protrusion 102, and first fisheyes 104 are provided on both sides of the connection end 101, and a straight second fisheye 105 is provided between adjacent protrusions 102. At the same time, a socket 201 that cooperates with the protrusion 102 is provided on the back plate 2, a locking block 202 that cooperates with the slot 103 is provided in the socket 201, and a mounting hole 203 that cooperates with the fisheye mechanism is provided. The protrusion 102 and the slot 103 interfere with the socket 201 and the locking block 202, which can effectively ensure the reliability of the contact, the return path is shorter, the mutual inductance of the differential pair is smaller, and the anti-crosstalk performance is better.
[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A backplane connector shield for improving the crosstalk performance of a connector string comprising a single board (1) and a backplane (2), characterized in that, One end of the single board (1) is integrally formed with a connecting end (101). The single board (1) is connected to the back plate (2) through the connecting end (101). One side of the connecting end (101) is integrally formed with multiple protrusions (102). One side of the connecting end (101) is integrally formed with multiple fisheye mechanisms. The fisheye mechanisms are arranged along the horizontal direction of the connecting end (101). The middle part of the back plate (2) is provided with multiple insertion holes (201) that cooperate with the protrusions (102). The middle parts of both sides of the insertion holes (201) are provided with mounting holes (203) that cooperate with the fisheye mechanisms.
2. The backplane connector shield of claim 1, wherein, The single plate (1) and the back plate (2) are arranged vertically.
3. The backplane connector shield of claim 2, wherein, The multiple protrusions (102) are arranged at equal intervals.
4. The backplane connector shield of claim 3, wherein, The protrusion (102) has a slot (103) at the middle of the end away from the connecting end (101).
5. The backplane connector shield of claim 4, wherein, The fisheye mechanism includes two first fisheyes (104) and a plurality of second fisheyes (105), with the two first fisheyes (104) being integrally formed at both ends of the connecting end (101).
6. The backplane connector shield of claim 5, wherein, Two second fish eyes (105) form a group, and multiple groups of second fish eyes (105) are integrally formed in the middle of the connecting end (101). Each group of second fish eyes (105) is located between two adjacent protrusions (102).
7. A backplane connector shielding sheet for improving connector crosstalk performance according to claim 6, characterized in that, The insertion holes (201) of two adjacent layers are staggered, and a locking block (202) is integrally formed in the middle of the inner wall of the insertion hole (201).
8. The backplane connector shield of claim 7, wherein, The card block (202) is engaged with the card slot (103), and the card block (202) is engaged inside the card slot (103).
9. The backplane connector shield of claim 8, wherein, The end of the first fisheye (104) away from the connecting end (101) and the end of the second fisheye (105) away from the connecting end (101) are both inserted into the corresponding mounting hole (203) and extend to the outside.