High-speed connector

Abstract

The invention relates to the technical field of communication transmission equipment, in particular to a high-speed connector. The high-speed connector comprises a shell, more than two contact modules are arranged in the shell, each contact module is provided with a plurality of contact pieces, each contact piece is provided with a plug-in end, a shielding net is further arranged in the shell, the plug-in ends penetrate through net holes of the shielding net and stretch out towards the plug-in side, and the plug-in ends of the contact pieces of the contact modules are provided with contact structures which are the same in structure. The two contact pieces, opposite to each other in the stacking direction, of every two adjacent contact modules form a pair of contact pieces, in the pair of contact pieces of every two adjacent contact modules, the pair of contact pieces with the contact structures electrically connected with the shielding nets are grounding contact pieces, and the pair of contact pieces with the contact structures isolated from the shielding nets in an insulated mode are differential contact pieces. And the differential contact piece and the grounding contact piece can be flexibly defined only by adjusting the structure of the shielding net, and the mold opening cost of the shielding net is far lower than that of a contact module, so that the development cost of the connector is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of communication transmission equipment, and in particular to a high-speed connector. Background Art

[0002] In modern data communication transmission systems, the transmission rate is getting higher and higher. High-speed interconnection systems are widely used in communication networks and data exchange systems. As the core bridge of data communication, high-speed backplane connectors have higher and higher performance requirements. The application of various forms of shielding structures has greatly reduced the crosstalk between signals and improved the SI performance of high-speed backplane connectors, which can meet the needs of higher-speed transmission.

[0003] An existing high-speed backplane connector has a structure as follows: Figure 1 As shown, it includes a housing 1, in which a plurality of contact modules 4 are arranged in sequence, and the contact module 4 includes an insulating frame and a differential contact 4012 and a grounding contact 4011 arranged on the insulating frame, and the differential contact 4012 and the grounding contact 4011 are arranged alternately in sequence, and the differential contact 4012 and the grounding contact 4011 are both bent contacts, and both have a mounting end and a plug-in end, and the mounting end and the plug-in end are perpendicular to each other. A shielding net is also installed in the housing 1, and the plug-in end of each contact extends toward the plug-in side after passing through the mesh of the shielding net. Since the differential contact and the grounding contact of the contact module have different structures, once the contact module is manufactured, the differential contact and the grounding contact are also fixed, and the structures of multiple contact modules of the same connector are not necessarily exactly the same, so it is necessary to open multiple sets of molds for manufacturing, resulting in a high cost of connector development. Summary of the invention

[0004] The object of the present invention is to provide a high-speed connector to solve the problem of high development cost of existing high-speed connectors.

[0005] To achieve the above purpose, the high-speed connector of the present invention adopts the following technical solutions:

[0006] A high-speed connector comprises a shell, wherein the shell contains more than two contact modules arranged in a stacked manner, each contact module has a plurality of contacts arranged in parallel, the contact has a plug-in end for plugging with an adapter connector, a shielding net is also contained in the shell, the plug-in end passes through the mesh of the shielding net and extends toward the plug-in side, the plug-in end of each contact of the contact module is provided with a contact structure with the same structure, two contact pieces of two adjacent contact modules that are directly opposite in the stacking direction form a pair of contact pieces, and among the paired contact pieces of the two adjacent contact modules, the paired contact pieces that are electrically connected with the shielding net are grounded contacts, and the paired contact pieces that are insulated and isolated from the shielding net are differential contacts.

[0007] Beneficial effect: The high-speed connector of the present invention is improved on the basis of the existing high-speed connector. The structure of the plug-in end of each contact piece on the contact module is the same, and the same contact structure is provided on the plug-in end of each contact piece. Whether the contact structure on the contact piece forms an electrical connection with the shielding net determines whether the contact piece is a grounding contact piece or a differential contact piece. In other words, the contact module does not distinguish between differential contacts and grounding contacts after manufacturing. Instead, the shielding net determines whether each contact piece of the contact module is a differential contact piece or a grounding contact piece during assembly. In this way, when developing the connector, according to customer needs, only the structure of the shielding net needs to be adjusted, and the differential contacts and grounding contacts can be flexibly defined. The mold opening cost of the shielding net is much lower than the mold opening cost of the contact module, so the connector development cost can be reduced to a large extent.

[0008] Furthermore, the inner wall of the mesh of the shielding net through which the grounding contact passes has a conductive portion, and the grounding contact contacts the conductive portion to form a grounding connection. The inner wall of the mesh of the shielding net through which the differential contact passes has an insulating structure, and the differential contact contacts the insulating structure to be insulated and isolated from the shielding net.

[0009] Beneficial effect: The plug-in ends of each grounding contact and differential contact of the contact module are in contact with the shielding net, and the plug-in ends of each grounding contact and differential contact are supported and limited by the shielding net, so that the plug-in ends of each grounding contact and differential contact have good consistency.

[0010] Furthermore, the insulating structure is an insulating layer covering the hole walls of the mesh.

[0011] Beneficial effects: An insulating layer is covered on the hole wall of the mesh to form an insulating structure, which has a simple structure and is easy to set up.

[0012] Alternatively, the inner wall of the mesh holes of the shielding net through which the grounding contact passes has a conductive portion, and the grounding contact contacts the conductive portion to form a grounding connection. The inner wall of the mesh holes of the shielding net through which the differential contact passes has an avoidance structure, and the contact structure of the differential contact is physically separated from the shielding net by the avoidance structure, thereby achieving insulation isolation from the shielding net.

[0013] Beneficial effect: There is no need to set up an insulating structure on the inner wall of the mesh holes of the shielding net for the differential contact pieces to pass through. It is only necessary to control the size of the mesh holes of the shielding net for the differential contact pieces to pass through so that the contact structure of the differential contact pieces does not contact the shielding net to achieve insulation isolation from the shielding net, thereby making the overall structure of the shielding net simple, easy to process, and low in processing cost.

[0014] Furthermore, the paired differential contacts of two adjacent contact modules pass through the same mesh, and the two differential contacts of the same pair are arranged at intervals, and the housing has a supporting and limiting structure extending between the two differential contacts and contacting with the contact structures on the two differential contacts.

[0015] Beneficial effects: The paired differential contacts of two adjacent contact modules pass through the same mesh, which can simplify the mesh arrangement on the shielding net and make the shielding net processing more convenient. At the same time, the two differential contacts of the same pair are arranged at intervals. The supporting and limiting structure on the shell extends between the two paired differential contacts and contacts with the contact structure on the two differential contacts, which can support and constrain the plug-in ends of the differential contacts and ensure the consistency of the plug-in ends of each contact.

[0016] Furthermore, the contact structure is a spring claw or an elastic convex bump.

[0017] Beneficial effect: The contact structure on the contact piece forms elastic contact with the inner wall of the mesh of the shielding net, the contact is more reliable, and the rigidity is smaller, which can prevent the contact piece from being squeezed and deformed.

[0018] Furthermore, the plug-in end of each contact piece is in a sheet shape, and the pressure direction of the contact structure is parallel to the coupling direction of the paired contact pieces.

[0019] Beneficial effect: The plug-in end of each contact piece is sheet-shaped, and the plug-in ends of the paired contacts are coupled perpendicularly to the wide side direction of the plug-in ends, so that the pressure direction of the contact structure is parallel to the coupling direction of the paired contacts, ensuring the coupling performance of the paired contacts.

[0020] Furthermore, the contact structures on the same pair of contact members are close to each other and close to the corresponding mesh frames of the shielding mesh from both sides.

[0021] Beneficial effect: The contact structures on the same pair of contact pieces are brought close to the corresponding frames of the shielding net from both sides, so that the coupling of the paired contact pieces can be better and the shielding effect of the shielding net can be better.

[0022] Furthermore, the paired differential contact members of two adjacent contact modules form a differential signal pair, the paired grounding contact members of two adjacent contact modules form a grounding pair, there are more than four contact modules and more than two rows of signal pairs are formed, the differential signal pairs and the grounding pairs in the same row are arranged alternately in sequence, and the differential signal pairs in two adjacent rows are staggered.

[0023] Beneficial effect: This arrangement can increase the spacing between two adjacent differential signal pairs, so that ground pairs are arranged on all four sides of the periphery of each differential signal pair, thereby reducing crosstalk between signals, and on the basis of ensuring signal transmission performance, improve the density of differential signal pair arrangement and reduce the size of the connector.

[0024] Furthermore, the high-speed connector also includes a shielding shell for clamping each contact module, and a grounding structure is provided on the shielding shell, and is electrically connected to the shielding net through the grounding structure.

[0025] Beneficial effect: each contact module is fixed by means of a shielding shell, and the shielding shell is electrically connected to the shielding net to shield each contact module together, thereby achieving a better shielding effect.

[0026] Furthermore, the grounding structure is a grounding claw.

[0027] Beneficial effects: The grounding claw has a simple structure, flexible deformation, and reliable contact, so that the shielding shell and the shielding net form a reliable electrical connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of an existing high-speed backplane connector;

[0029] Figure 2 It is an overall schematic diagram of Embodiment 1 of the high-speed connector of the present invention;

[0030] Figure 3 is a schematic diagram of the structure of the contact module;

[0031] Figure 4 for Figure 2 A partial cross-sectional view along the Z direction;

[0032] Figure 5 for Figure 2 A partial cross-sectional view along the X direction;

[0033] Figure 6 for Figure 5 The enlarged schematic diagram at P in the middle;

[0034] Figure 7 It is a schematic diagram of the structure of the shielding shell;

[0035] Figure 8 is a cross-sectional view of embodiment 1 of the high-speed connector of the present invention;

[0036] Fig. 9 for Figure 2 A cross-sectional view along the X direction;

[0037] In the figure: 1. Shell; 101. Support and limit structure; 2. Shielding net; 201. Grounding contact piece perforation; 202. Differential contact piece perforation; 3. Shielding shell; 301. Grounding claw; 4. Contact module; 401. Contact piece; 4011. Grounding contact piece; 4012. Differential contact piece; 402. Plug-in end; 403. Claw; 404. Insulation frame; 405. Installation end. DETAILED DESCRIPTION

[0038] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0039] Embodiment 1 of the high-speed connector of the present invention:

[0040] like Figure 2 As shown, the high-speed connector includes a housing 1, which is made of an insulating material. A plurality of contact modules 4 are stacked in the housing 1. Each contact module 4 includes an insulating frame 404 and a plurality of contact pieces 401 arranged in parallel on the insulating frame 404. Each contact piece 401 is a bent contact piece 401, each having a mounting end 405 and a plug-in end 402 for plugging with an adapter connector. The mounting end 405 and the plug-in end 402 are perpendicular to each other. Two contact pieces 401 of two adjacent contact modules 4 that are facing each other in the stacking direction form a pair of contact pieces 401. A shielding net 2 is installed in the housing 1, and the plug-in end 402 of each contact piece 401 passes through the mesh of the shielding net 2 and extends toward the plug-in side. The high-speed connector also includes a shielding shell 3 for clamping each contact module 4, and the shielding shell 3 is electrically connected to the shielding net 2.

[0041] like Figure 3 , Figure 4 As shown, the plug-in end 402 of each contact piece 401 of the contact module 4 is sheet-shaped, and a spring claw 403 is provided on the wide side of the sheet-shaped plug-in end 402. The spring claw 403 is cantilevered perpendicularly to the wide side of the sheet-shaped plug-in end 402. The plug-in ends 402 of the paired contact pieces 401 are coupled along the stacking direction of the contact module 4, that is, perpendicular to the wide side direction of the plug-in ends 402. The pressure direction of the spring claw 403 is parallel to the coupling direction of the paired contact pieces 401. When the spring claw 403 is pressed, it elastically contacts with the shielding net 2 in the coupling direction of the paired contact pieces 401. Among the paired contact pieces 401 of two adjacent contact modules 4, the paired contact pieces 401 in which the spring claws 403 are electrically connected to the shielding net 2 are grounded contact pieces 4011, and the paired contact pieces 401 in which the spring claws 403 are insulated and isolated from the shielding net 2 are differential contact pieces 4012. The shielding net 2 determines whether each contact piece 401 on the contact module 4 is a grounded contact piece 4011 or a differential contact piece 4012.

[0042] The shielding net 2 is made of metal material, such as Figure 4-6As shown, the shielding net 2 has a grounding contact through-hole 201 for the grounding contact 4011 to pass through and a differential contact through-hole 202 for the differential contact 4012 to pass through. The inner wall of the grounding contact through-hole 201 has a conductive portion. When the plug-in end 402 of the grounding contact 4011 passes through the grounding contact through-hole 201, the spring claw 403 thereon elastically contacts with the conductive portion of the inner wall of the grounding contact through-hole 201 to form a grounding connection. The inner wall of the differential contact through-hole 202 has an avoidance structure. When the plug-in end 402 of the differential contact 4012 passes through the differential contact through-hole 202, the spring claw 403 thereon is physically separated from the shielding net 2 through the avoidance structure and then insulated from the shielding net 2. The spring claws 403 on the same pair of contacts 401 are close to each other and close to the corresponding mesh frame of the shielding net 2 from both sides.

[0043] Specifically, each differential contact 4012 can correspond to a differential contact through-hole 202, and the size of the differential contact through-hole 202 can be made larger to form a avoidance structure at the hole wall of the differential contact through-hole 202, so that after the plug-in end 402 of the differential contact 4012 passes through the differential contact through-hole 202, there is a gap between the spring claw 403 on the plug-in end 402 and the hole wall of the differential contact through-hole 202, thereby achieving insulation isolation from the shielding net 2. It is also possible, as shown in this embodiment, to make the paired differential contacts 4012 of two adjacent contact modules 4 pass through the same differential contact through-hole 202, and the paired differential contacts 4012 are arranged at intervals, thereby forming a avoidance structure in the differential contact through-hole 202. When the paired differential contacts 4012 of two adjacent contact modules 4 pass through the same differential contact through-hole 202, due to the long overhang of the plug-in end 402, the stability and consistency are poor without support. In order to ensure the consistency of the plug-in end 402 of each contact 401, a support and limiting structure 101 is integrally provided on the shell 1. The support and limiting structure 101 extends between the two differential contacts 4012 and contacts with the spring claws 403 on the two differential contacts 4012 to support and constrain the plug-in end 402 of the differential contact 4012, thereby ensuring the consistency of the plug-in end 402 of each contact 401.

[0044] The paired differential contact members 4012 of two adjacent contact modules 4 form a differential signal pair, and the paired grounding contact members 4011 of two adjacent contact modules 4 form a grounding pair. A plurality of contact modules 4 are stacked to form multiple rows of differential signal pairs. The differential signal pairs and the grounding pairs in the same row are alternately arranged in sequence, and the differential signal pairs in two adjacent rows are staggered. Fig. 9 shown.

[0045] like Figure 7-8 As shown, the shielding shell 3 is provided with a grounding claw 301 , the grounding claw 301 is in elastic contact with the shielding net 2 , and the shielding shell 3 is electrically connected to the shielding net 2 via the grounding claw 301 .

[0046] The structure of the plug-in end 402 of each contact 401 on the contact module 4 of the high-speed connector of the present invention is the same, and the plug-in end 402 of each contact 401 is provided with the same spring claw 403 structure, and whether the spring claw 403 forms an electrical connection with the shielding net 2 determines whether the contact 401 where the spring claw 403 is located is a grounding contact 4011 or a differential contact 4012, and whether the spring claw 403 can form an electrical connection with the shielding net 2 is determined by the structure of the shielding net 2. In other words, the contact module 4 does not distinguish between the differential contact 4012 and the grounding contact 4011 after manufacturing, but the shielding net 2 determines whether each contact 401 of the contact module 4 is a differential contact 4012 or a grounding contact 4011 during assembly. In this way, when developing the connector, there is no need to open multiple sets of molds due to the different structures of the plug-in ends 402 of different contacts 401 of the contact module 4. According to customer needs, only the structure of the shielding net 2 needs to be adjusted to flexibly define the differential contact 4012 and the grounding contact 4011. The mold opening cost of the shielding net 2 is much lower than the mold opening cost of the contact module 4, thus greatly reducing the connector development cost.

[0047] Of course, the high-speed connector of the present invention is not limited to the above-mentioned embodiments.

[0048] For example, in other embodiments, the inner wall of the mesh through which the grounding contact passes of the shielding net has a conductive portion, and the grounding contact forms a ground connection by contacting the conductive portion with the spring claw on its plug-in end, and the inner wall of the mesh through which the differential contact passes of the shielding net is covered with an insulating layer, and when the plug-in end of the differential contact passes through the mesh, the spring claw on it contacts the insulating layer on the inner wall of the mesh to be insulated and isolated from the shielding net. Insulating protrusions can also be provided on the inner wall of the mesh through which the differential contact passes of the shielding net as an insulating structure, and when the plug-in end of the differential contact passes through the mesh, the spring claw on it contacts the insulating protrusion on the inner wall of the mesh to be insulated and isolated from the shielding net.

[0049] For example, in other embodiments, an elastic bump is provided on the plug-in end of each contact piece of the contact module to replace the elastic claw.

[0050] For example, in other embodiments, the differential signal pairs and the ground pairs in the same row are arranged alternately in sequence, the differential signal pairs in two adjacent rows are arranged opposite each other, and the ground pairs in two adjacent rows are arranged opposite each other. In this case, a shielding structure may be additionally arranged between the differential signal pairs in two adjacent rows to reduce signal crosstalk.

[0051] For example, in other embodiments, an elastic convex bump is provided on the shielding shell as a grounding structure, and is electrically connected to the shielding net through the elastic convex bump.

[0052] For example, in other embodiments, the shielding mesh is made of conductive plastic, electroplated plastic, or other materials.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A high-speed connector, comprising a housing (1), wherein the housing (1) contains two or more contact modules (4) arranged in a stacked manner, each contact module (4) having a plurality of contact pieces (401) arranged in parallel, the contact pieces (401) having a plug-in end (402) for plugging and mating with a matching connector, a shielding net (2) further being contained in the housing (1), the plug-in end (402) passing through meshes of the shielding net (2) and extending toward a plug-in side, characterized in that: The plug-in end (402) of each contact piece (401) of the contact module (4) is provided with a contact structure with the same structure; two contact pieces (401) of two adjacent contact modules (4) that are directly opposite to each other in the stacking direction form a pair of contact pieces (401); among the paired contact pieces (401) of the two adjacent contact modules (4), the paired contact pieces (401) whose contact structure is electrically connected to the shielding net (2) are grounded contact pieces (4011), and the paired contact pieces (401) whose contact structure is insulated and isolated from the shielding net (2) are differential contact pieces (4012).

2. The high-speed connector according to claim 1, characterized in that: The inner wall of the mesh of the shielding net (2) through which the grounding contact piece (4011) passes has a conductive portion, and the grounding contact piece (4011) contacts the conductive portion to form a grounding connection. The inner wall of the mesh of the shielding net (2) through which the differential contact piece (4012) passes has an insulating structure, and the differential contact piece (4012) contacts the insulating structure to be insulated and isolated from the shielding net (2).

3. The high-speed connector according to claim 2, characterized in that: The insulating structure is an insulating layer covering the hole wall of the mesh.

4. The high-speed connector according to claim 1, characterized in that: The inner wall of the mesh of the shielding net (2) through which the grounding contact piece (4011) passes has a conductive portion, and the grounding contact piece (4011) contacts the conductive portion to form a grounding connection. The inner wall of the mesh of the shielding net (2) through which the differential contact piece (4012) passes has an avoidance structure, and the contact structure of the differential contact piece (4012) is physically separated from the shielding net (2) by the avoidance structure, thereby achieving insulation isolation from the shielding net (2).

5. The high-speed connector according to claim 4, characterized in that: The paired differential contact pieces (4012) of two adjacent contact modules (4) pass through the same mesh, and the two differential contact pieces (4012) of the same pair are arranged at intervals, and the housing (1) has a supporting and limiting structure (101) extending between the two differential contact pieces (4012) and contacting the contact structures on the two differential contact pieces (4012).

6. The high-speed connector according to any one of claims 1 to 5, characterized in that: The contact structure is a spring claw (403) or an elastic convex bump.

7. The high-speed connector according to claim 6, characterized in that: The plug-in end (402) of each contact piece (401) is in a sheet shape, and the pressure direction of the contact structure is parallel to the coupling direction of the paired contact pieces (401).

8. The high-speed connector according to claim 7, characterized in that: The contact structures on the same pair of contact members (401) are close to each other and close to the corresponding mesh frames of the shielding mesh (2) from both sides.

9. The high-speed connector according to any one of claims 1 to 5, characterized in that: The paired differential contact pieces (4012) of two adjacent contact modules (4) form a differential signal pair, and the paired grounding contact pieces (4011) of two adjacent contact modules (4) form a grounding pair. The contact modules (4) have more than four and form more than two rows of signal pairs. The differential signal pairs and the grounding pairs in the same row are arranged alternately in sequence, and the differential signal pairs in two adjacent rows are arranged in a staggered manner.

10. The high-speed connector according to any one of claims 1 to 5, characterized in that: The high-speed connector also includes a shielding shell (3) for clamping each contact module (4); a grounding structure is provided on the shielding shell (3) and is electrically connected to the shielding net (2) via the grounding structure.

11. The high-speed connector according to claim 10, characterized in that: The grounding structure is a grounding claw (301).

Images