Socket and high-speed backplane connector having the same

Abstract

The present invention discloses a socket and a high-speed backplane connector having the socket, which relate to the field of communication technologies. The socket includes a plurality of shielding components and conductive sheets. Each shielding component includes a first substrate and a second substrate. A first metal sheet on the first substrate is fixed on a first insulating housing. A first elastic sheet contacts the first metal sheet. Two second elastic sheets are arranged between two adjacent first elastic sheets. A first interface terminal is connected to the first elastic sheet, and a second interface terminal is connected to the second elastic sheet. A second metal sheet on the second substrate is fixed on a second insulating housing. A third elastic sheet contacts the second metal sheet. Two fourth elastic sheets are arranged between two adjacent third elastic sheets. A third interface terminal is connected to the third elastic sheet, and a fourth interface terminal is connected to the fourth elastic sheet. The first interface terminal and the third interface terminal both contact the conductive sheet; thereby solving the problem that the shielding effect of the shielding sheet of the high-speed backplane connector socket on the crosstalk between differential pair signals in the prior art is not good enough.

Description

Technical Field

[0001] The present invention relates to the field of communication technologies, and more particularly, to a socket and a high-speed backplane connector having the socket. Background Art

[0002] High-speed backplane connectors are widely used in communication technologies. They are a type of connector commonly used in large communication devices, ultra-high performance servers, supercomputers, industrial computers, and high-end storage devices. With the continuous improvement of communication technologies, the requirements for data transmission rates and storage are also getting higher and higher. Therefore, it is necessary to increase the technical research on high-speed backplane connectors. Since high-speed backplane connectors transmit high-speed signals, it is necessary to minimize the crosstalk between differential signals.

[0003] Currently, the existing electrical shielding designs between differential pair signals include conductive plastic shielding, plastic electroplating shielding, and air shielding. The existing shielding designs cannot effectively reduce the crosstalk and resonance between differential signals and are not applicable to signal transmissions above 20G.

[0004] Therefore, how to solve the problem of poor crosstalk shielding effect of the shielding sheet of the high-speed backplane connector socket in the prior art has become an important technical problem to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a socket and a high-speed backplane connector having the socket to solve the technical problem of poor crosstalk shielding effect of the shielding sheet of the high-speed backplane connector socket in the prior art. The many technical effects that can be produced by the preferred technical solutions provided by the present invention are described in detail below.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] The present invention provides a socket, including:

[0008] Multiple shielding components, each of the shielding components is arranged in parallel side by side, and each of the shielding components includes a first substrate and a second substrate arranged in parallel side by side with the first substrate. The first substrate includes a first insulating housing, a first metal sheet fixedly connected to the first insulating housing, a plurality of first elastic sheets in multi-point elastic contact with the first metal sheet, two second elastic sheets arranged between two adjacent first elastic sheets, a first interface terminal connected to the first elastic sheet in one-to-one correspondence, and a second interface terminal connected to the second elastic sheet in one-to-one correspondence. The second substrate includes a second insulating housing, a second metal sheet fixedly connected to the second insulating housing, a plurality of third elastic sheets in multi-point elastic contact with the second metal sheet, two fourth elastic sheets arranged between two adjacent third elastic sheets, a third interface terminal connected to the third elastic sheet in one-to-one correspondence, and a fourth interface terminal connected to the fourth elastic sheet in one-to-one correspondence. The first interface terminal and the third interface terminal are both used for electrically connecting to a grounding circuit, and the second interface terminal and the fourth interface terminal are both used for electrically connecting to a signal circuit;

[0009] Conductive sheets are arranged between each of the shielding components, and conductive sheets are also arranged between the first substrate and the second substrate in each of the shielding components. The first interface terminal and the third interface terminal adjacent to the conductive sheet are both in multi-point elastic contact with the conductive sheet.

[0010] Based on the above technical solutions, the present invention can be further improved as follows.

[0011] Further, a plurality of protrusions are provided on one side of the first insulating housing close to the first metal sheet and on one side of the second insulating housing close to the second metal sheet.

[0012] Further, a plurality of through holes for the protrusions to pass through in one-to-one correspondence are provided on both the first metal sheet and the second metal sheet.

[0013] Further, the number of contact points between each of the first elastic sheets and the first metal sheet is multiple, the number of contact points between each of the third elastic sheets and the second metal sheet is multiple, and the distance between two adjacent contact points ≤ 4 mm.

[0014] Further, the number of the shielding components is three.

[0015] Further, the first elastic sheet and the first interface terminal are of an integral structure, the second elastic sheet and the second interface terminal are of an integral structure, the third elastic sheet and the third interface terminal are of an integral structure, and the fourth elastic sheet and the fourth interface terminal are of an integral structure.

[0016] Further, both the first insulating housing and the second insulating housing are made of plastic material.

[0017] Further, the first metal sheet, the second metal sheet, the first elastic sheet, the second elastic sheet, the third elastic sheet, and the fourth elastic sheet are all made of phosphor bronze material.

[0018] Further, the tops of the first elastic sheet, the second elastic sheet, the third elastic sheet, and the fourth elastic sheet are all provided with bending structures, and the bending directions of the respective bending structures are the same.

[0019] The present invention provides a high-speed backplane connector, including the socket described above.

[0020] The technical solution provided by this application has the following beneficial effects:

[0021] In the technical solution provided by the present invention, a socket includes a plurality of shielding components and conductive sheets. The shielding components are arranged in parallel side by side, and each shielding component includes a first substrate and a second substrate. The first substrate and the second substrate are arranged in parallel side by side. The first substrate includes a first insulating housing, a first metal sheet, a first elastic sheet, a second elastic sheet, a first interface terminal, and a second interface terminal. The first metal sheet is fixedly connected to the first insulating housing. A plurality of first elastic sheets are in multi-point elastic contact with the first metal sheet. Two second elastic sheets are arranged between adjacent two first elastic sheets. The first interface terminal is connected to the first elastic sheet in one-to-one correspondence, and the second interface terminal is connected to the second elastic sheet in one-to-one correspondence. The second substrate includes a second insulating housing, a second metal sheet, a third elastic sheet, a fourth elastic sheet, a third interface terminal, and a fourth interface terminal. The second metal sheet is fixedly connected to the second insulating housing. A plurality of third elastic sheets are in multi-point elastic contact with the second metal sheet. Two fourth elastic sheets are arranged between adjacent two third elastic sheets. The third interface terminal is connected to the third elastic sheet in one-to-one correspondence, and the fourth interface terminal is connected to the fourth elastic sheet in one-to-one correspondence. The first interface terminal and the third interface terminal are both used for electrically connecting to a grounding circuit, and the second interface terminal and the fourth interface terminal are both used for electrically connecting to a signal circuit. Conductive sheets are arranged between the shielding components, and conductive sheets are also arranged between the first substrate and the second substrate in each shielding component. The first interface terminal and the third interface terminal adjacent to the conductive sheet are in multi-point elastic contact with the conductive sheet.With such an arrangement, the first substrate and the second substrate in the socket belong to two sub-shielding systems. The first metal sheet in the first substrate is in multi-point elastic contact with each first elastic sheet, enabling the first metal sheet in the first substrate to form an interconnection with the corresponding first interface terminals, and protecting each pair of second elastic sheets inside the first substrate. The second metal sheet in the second substrate is in multi-point elastic contact with each third elastic sheet, enabling the second metal sheet in the second substrate to form an interconnection with the corresponding third interface terminals, and protecting each pair of fourth elastic sheets inside the second substrate. The first interface terminals and the third interface terminals are both electrically connected to the ground circuit in the single-board circuit board, and the second interface terminals and the fourth interface terminals are both electrically connected to the signal circuit in the single-board circuit board. The first metal sheet can enable the effective grounding interconnection of each grounding terminal inside the first substrate shielding system, and the second metal sheet can enable the effective grounding interconnection of each grounding terminal inside the second substrate shielding system. The conductive sheets between the first substrate and the second substrate are in multi-point elastic contact with each first interface terminal and each third interface terminal respectively. In this way, the common grounding interconnection can be achieved between two adjacent first substrates and second substrates, and conductive sheets are also provided between adjacent shielding components. In this way, the effective grounding interconnection can be achieved between the shielding systems of each shielding component, resulting in a complete and alternately interconnected shielding sheet system for the entire socket, thereby reducing the crosstalk and resonance of the overall connector, protecting the transmission quality of signals, and being applicable to high-speed connection systems with a higher speed of 20G and above; thus solving the problem that the shielding effect of the shielding sheet on the crosstalk between differential pairs of signals in the high-speed backplane connector socket in the prior art is not good. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of the first substrate after removing the first insulating housing in the embodiment of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the first substrate in the embodiment of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the second substrate after removing the second insulating housing in the embodiment of the present invention;

[0026] Figure 4 It is a schematic structural diagram of the second substrate in the embodiment of the present invention;

[0027] Figure 5It is a schematic structural diagram of the overall socket in the embodiment of the present invention;

[0028] Figure 6 It is the front view of the socket in the embodiment of the present invention;

[0029] Figure 7 It is a schematic structural diagram of the interior of the socket in the embodiment of the present invention.

[0030] Reference numerals:

[0031] 1. Shielding component; 2. First substrate; 3. Second substrate; 4. First insulating housing; 5. First metal sheet; 6. First elastic sheet; 7. Second elastic sheet; 8. First interface terminal; 9. Second interface terminal; 10. Second insulating housing; 11. Second metal sheet; 12. Third elastic sheet; 13. Fourth elastic sheet; 14. Third interface terminal; 15. Fourth interface terminal; 16. Conductive sheet; 17. Protrusion; 18. Through hole; 19. Contact point; 20. Bending structure. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope protected by the present invention.

[0033] The purpose of this specific implementation manner is to provide a socket and a high-speed backplane connector having the socket, thereby solving the problem that the shielding effect of the shielding sheet of the socket of the high-speed backplane connector in the prior art on the crosstalk between differential pair signals is not good.

[0034] Hereinafter, the embodiments will be described with reference to the drawings. In addition, the embodiments shown below do not impose any limitation on the content of the invention described in the claims. Additionally, all the content of the configurations shown in the following embodiments is not limited to what is necessary for the solution of the invention described in the claims.

[0035] Please refer to Figures 1 - 7, this embodiment provides a socket, including a plurality of shielding components 1 and conductive sheets 16. The material of the conductive sheets 16 can be set according to the specific use environment. For example, it can be a metal material, plastic electroplating, conductive plastic, etc. Each shielding component 1 is arranged in parallel side by side, and each shielding component 1 includes a first substrate 2 and a second substrate 3. The first substrate 2 and the second substrate 3 are arranged in parallel side by side. The first substrate 2 includes a first insulating housing 4, a first metal sheet 5, a first elastic sheet 6, a second elastic sheet 7, a first interface terminal 8, and a second interface terminal 9. The first metal sheet 5 is fixedly connected to the first insulating housing 4. A plurality of first elastic sheets 6 are in multi-point elastic contact with the first metal sheet 5. Two second elastic sheets 7 are arranged between adjacent two first elastic sheets 6. The first interface terminal 8 is connected to the first elastic sheet 6 in one-to-one correspondence. The second interface terminal 9 is connected to the second elastic sheet 7 in one-to-one correspondence. The second substrate 3 includes a second insulating housing 10, a second metal sheet 11, a third elastic sheet 12, a fourth elastic sheet 13, a third interface terminal 14, and a fourth interface terminal 15. The second metal sheet 11 is fixedly connected to the second insulating housing 10. A plurality of third elastic sheets 12 are in multi-point elastic contact with the second metal sheet 11. Two fourth elastic sheets 13 are arranged between adjacent two third elastic sheets 12. The third interface terminal 14 is connected to the third elastic sheet 12 in one-to-one correspondence. The fourth interface terminal 15 is connected to the fourth elastic sheet 13 in one-to-one correspondence. The materials of the first insulating housing 4, the second insulating housing 10, the first metal sheet 5, the second metal sheet 11, the first elastic sheet 6, the second elastic sheet 7, the third elastic sheet 12, and the fourth elastic sheet 13 can be set according to the specific use environment. In this embodiment, the materials of the first insulating housing 4 and the second insulating housing 10 are both preferably plastic materials. Plastic materials have the advantages of good processing characteristics, can be processed into products of various shapes according to use requirements, and the processing process is simple. The first metal sheet 5, the second metal sheet 11, the first elastic sheet 6, the second elastic sheet 7, the third elastic sheet 12, and the fourth elastic sheet 13 are all preferably phosphor bronze materials. Because phosphor bronze is an alloy copper, it has good electrical conductivity, is not easy to heat, ensures safety, and at the same time has strong fatigue resistance. Moreover, the elastic sheets made of phosphor bronze material can ensure better contact, have good elasticity and stable plugging and unplugging. The first interface terminal 8 and the third interface terminal 14 are both used for electrically connecting to the grounding circuit. The second interface terminal 9 and the fourth interface terminal 15 are both used for electrically connecting to the signal circuit. In this embodiment, the first elastic sheet 6 and the first interface terminal 8 are of an integral structure. The second elastic sheet 7 and the second interface terminal 9 are of an integral structure. The third elastic sheet 12 and the third interface terminal 14 are of an integral structure. The fourth elastic sheet 13 and the fourth interface terminal 15 are of an integral structure. In this embodiment, the first interface terminal 8, the second interface terminal 9, the third interface terminal 14, and the fourth interface terminal 15 are all preferably fish-eye terminals. Since the fish-eye terminals only need to be pressed into the board holes on the circuit board and do not require welding treatment, the operation is simple and convenient and the connection is firm. Conductive sheets 16 are arranged between each shielding component 1,A conductive sheet 16 is also provided between the first substrate 2 and the second substrate 3 in each shielding component 1. The first interface terminal 8 and the third interface terminal 14 adjacent to the conductive sheet 16 are in multi-point elastic contact with the conductive sheet 16. In this embodiment, the conductive sheet 16 is plastically positioned and assembled by the first substrate 2 and the second substrate 3 subsystems.

[0036] With such a setting, the first substrate 2 and the second substrate 3 in the socket belong to two sub-shielding systems. The first metal sheet 5 in the first substrate 2 is in multi-point elastic contact with each first elastic sheet 6, so that the first metal sheet 5 in the first substrate 2 forms an interconnection with the corresponding first interface terminals 8, and each pair of second elastic sheets 7 is protected inside the first substrate 2. The second metal sheet 11 in the second substrate 3 is in multi-point elastic contact with each third elastic sheet 12, so that the second metal sheet 11 in the second substrate 3 forms an interconnection with the corresponding third interface terminals 14, and each pair of fourth elastic sheets 13 is protected inside the second substrate 3. The first interface terminal 8 and the third interface terminal 14 are both electrically connected to the ground circuit in the single-board circuit board, and the second interface terminal 9 and the fourth interface terminal 15 are both electrically connected to the signal circuit in the single-board circuit board. The first metal sheet 5 can effectively ground and interconnect the ground terminals inside the shielding system of the first substrate 2, and the second metal sheet 11 can effectively ground and interconnect the ground terminals inside the shielding system of the second substrate 3. The conductive sheet 16 between the first substrate 2 and the second substrate 3 is in multi-point elastic contact with each first interface terminal 8 and each third interface terminal 14 respectively. In this way, common ground interconnection can be achieved between two adjacent first substrates 2 and second substrates 3. A conductive sheet 16 is also provided between two adjacent shielding components 1. In this way, effective ground interconnection can be achieved between the shielding systems of each shielding component 1, resulting in a complete and alternately interconnected shielding sheet system for the entire socket, thereby reducing the crosstalk and resonance of the connector as a whole, protecting the transmission quality of the signal, and being applicable to high-speed connection systems with a higher speed of 20G and above; thus solving the problem that the shielding effect of the shielding sheet on the crosstalk between differential pairs of signals in the high-speed backplane connector socket in the prior art is not good.

[0037] In a more specific embodiment, a plurality of protrusions 17 are provided on one side of the first insulating housing 4 close to the first metal sheet 5 and on one side of the second insulating housing 10 close to the second metal sheet 11. The shape of the protrusions 17 can be set according to the specific use environment. In this embodiment, the shape of the protrusions 17 is preferably cylindrical. A plurality of through holes 18 for the protrusions 17 to pass through one by one are provided on the first metal sheet 5 and the second metal sheet 11. With such a setting, the cooperation between the protrusions 17 and the through holes 18 facilitates the positioning and assembly between the first insulating housing 4 and the first metal sheet 5 and between the second insulating housing 10 and the second metal sheet 11. When the first insulating housing 4 and the first metal sheet 5 are assembled in place, the protrusions 17 protruding from the through holes 18 on the first metal sheet 5 completely adhere and fix the first metal sheet 5 and the first insulating housing 4 by means of hot melting. When the second insulating housing 10 and the second metal sheet 11 are assembled in place, the protrusions 17 protruding from the through holes 18 on the second metal sheet 11 completely adhere and fix the second metal sheet 11 and the second insulating housing 10 by means of hot melting, ensuring reliable elastic contact between the metal shielding sheet and each grounding terminal.

[0038] As an alternative embodiment, the number of contact points 19 between each first elastic piece 6 and the first metal sheet 5 and the number of contact points 19 between each third elastic piece 12 and the second metal sheet 11 are both preferably multiple, and the distance between two adjacent contact points 19 is ≤ 4 mm. In this way, it can be ensured that each elastic piece is in complete contact with the metal shielding sheet, maximizing the effective shielding area. In this embodiment, the number of shielding components 1 is preferably three.

[0039] As an alternative embodiment, a bending structure 20 is provided at the top of each of the first elastic piece 6, the second elastic piece 7, the third elastic piece 12, and the fourth elastic piece 13, and the bending directions of each bending structure 20 are the same. With such a setting, when the socket in this embodiment is inserted and assembled with a matching plug, the situation where the metal elastic piece cannot contact or has poor contact with the metal pin of the external plug is avoided.

[0040] This specific embodiment also provides a high-speed backplane connector, which includes the socket in any of the above embodiments. Since this high-speed backplane connector adopts the socket described in the above embodiments, the beneficial effects of this high-speed backplane connector are consistent with those of the above socket, so no detailed description will be given herein.

[0041] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A socket, characterized in that, Including: A plurality of shielding components (1), each of the shielding components (1) is arranged in parallel side by side, and each of the shielding components (1) includes a first substrate (2) and a second substrate (3) arranged in parallel side by side with the first substrate (2). The first substrate (2) includes a first insulating housing (4), a first metal sheet (5) fixedly connected to the first insulating housing (4), a plurality of first elastic sheets (6) in multi-point elastic contact with the first metal sheet (5), two second elastic sheets (7) arranged between two adjacent first elastic sheets (6), a first interface terminal (8) connected to the first elastic sheet (6) in one-to-one correspondence, and a second interface terminal (9) connected to the second elastic sheet (7) in one-to-one correspondence. The second substrate (3) includes a second insulating housing (10), a second metal sheet (11) fixedly connected to the second insulating housing (10), a plurality of third elastic sheets (12) in multi-point elastic contact with the second metal sheet (11), two fourth elastic sheets (13) arranged between two adjacent third elastic sheets (12), a third interface terminal (14) connected to the third elastic sheet (12) in one-to-one correspondence, and a fourth interface terminal (15) connected to the fourth elastic sheet (13) in one-to-one correspondence. The first interface terminal (8) and the third interface terminal (14) are both used for electrically connecting to a grounding circuit, and the second interface terminal (9) and the fourth interface terminal (15) are both used for electrically connecting to a signal circuit; A conductive sheet (16) is arranged between each of the shielding components (1), and a conductive sheet (16) is also arranged between the first substrate (2) and the second substrate (3) in each of the shielding components (1). The first interface terminal (8) and the third interface terminal (14) adjacent to the conductive sheet (16) are both in multi-point elastic contact with the conductive sheet (16).

2. The socket according to claim 1, wherein A plurality of protrusions (17) are arranged on one side of the first insulating housing (4) close to the first metal sheet (5) and on one side of the second insulating housing (10) close to the second metal sheet (11).

3. The socket according to claim 2, characterized in that, A plurality of through holes (18) for the protrusions (17) to pass through in one-to-one correspondence are arranged on the first metal sheet (5) and the second metal sheet (11).

4. The socket according to claim 1, characterized in that, The number of contact points (19) between each of the first elastic sheets (6) and the first metal sheet (5) is multiple, the number of contact points (19) between each of the third elastic sheets (12) and the second metal sheet (11) is multiple, and the distance between two adjacent contact points (19) ≤ 4 mm.

5. The socket according to claim 1, characterized in that, The number of the shielding components (1) is three.

6. The socket according to claim 1, characterized in that, The first elastic sheet (6) and the first interface terminal (8) are of an integral structure, the second elastic sheet (7) and the second interface terminal (9) are of an integral structure, the third elastic sheet (12) and the third interface terminal (14) are of an integral structure, and the fourth elastic sheet (13) and the fourth interface terminal (15) are of an integral structure.

7. The socket according to claim 1, characterized in that, Both the first insulating housing (4) and the second insulating housing (10) are made of plastic material.

8. The socket according to claim 1, characterized in that, The first metal sheet (5), the second metal sheet (11), the first elastic sheet (6), the second elastic sheet (7), the third elastic sheet (12) and the fourth elastic sheet (13) are all made of phosphor bronze material.

9. The socket according to claim 1, characterized in that, The tops of the first elastic sheet (6), the second elastic sheet (7), the third elastic sheet (12) and the fourth elastic sheet (13) are all provided with bending structures (20), and the bending directions of the respective bending structures (20) are the same.

10. A high-speed backplane connector, characterized in that, Comprising a socket according to any one of claims 1-9.

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