A high-reliability, high-speed electrical connector

Abstract

The application discloses a high-reliability and high-speed electric connector, which comprises a socket connector and a plug connector, the inside of the socket connector and the plug connector is provided with a shielding cavity, the socket connector is provided with a first contact, the periphery of the first contact is provided with a socket first base and a socket second base, the plug connector is provided with a second contact, the periphery of the second contact is provided with a plug first base and a plug second base, the head end of the first contact and the second contact is provided with a fisheye needle, the tail end of the second contact is provided with a counter contact, the fisheye needle of the socket connector end, the first contact, the counter contact of the plug connector end, the second contact and the fisheye needle form complete electrical communication. The application combines the elastic needle hole contact form and the fisheye termination form together, not only meets the requirements of high vibration impact and high-speed transmission, but also reduces the mutual interference between signals.

Description

Technical Field

[0001] This invention belongs to the field of connector technology, and in particular relates to a highly reliable, high-speed electrical connector. Background Technology

[0002] Connectors, acting as bridges for signal transmission, play an indispensable role in system operation; their reliable contact directly affects the continuity of the signal link. Flexible pinhole structures, due to their excellent vibration and shock resistance, are used in high-vibration environments such as missile-borne and airborne platforms.

[0003] Traditional pinhole contacts often employ machining and through-hole welding processes. However, as transmission rates increase, factors such as the "short-pile effect" of through-hole welding become increasingly prominent in limiting signal rates. In high-speed transmission, fisheye solderless crimping termination is often used, but machining fisheye structures is too costly. Summary of the Invention

[0004] To address the problems in the prior art, the present invention proposes the following technical solution:

[0005] A highly reliable, high-speed electrical connector includes a socket connector and a plug connector. Both the socket connector and the plug connector have a shielded cavity inside. The socket connector has a first contact element inside, and the first contact element is surrounded by a first socket base and a second socket base. The plug connector has a second contact element inside, and the second contact element is surrounded by a first plug base and a second plug base. The head ends of both the first and second contact elements are inserted with fisheye pins, and the tail end of the second contact element is inserted with a mating part.

[0006] The fisheye needle includes a fisheye needle head, a positioning hole, a connecting block, and a contact rod. The head ends of the first contact and the second contact are both machined into a four-lobed groove structure and matched with the contact rod. The tail end of the first contact is provided with a contact hole, and the tail end of the second contact is provided with a crimping hole. The mating part includes a mating post and a mating round head, and the mating post and the crimping hole are matched, and the mating round head and the contact hole are matched.

[0007] The fisheye pin and first contact at the socket connector end, and the mating part, second contact, and fisheye pin at the plug connector end form a complete electrical connection. The fisheye pin is a stamped part, and the first contact and second contact are machined parts.

[0008] Socket connectors and plug connectors have similar internal structures and principles; both are direct-insertion type, and they can be used in parallel plate applications. After mating, the first contact and the mating part make contact, forming an electrical connection and serving as a signal channel to transmit differential signals. The end faces of the outer shell and the mating part are in close contact, enclosing the signal channel inside each shielded cavity, forming a closed shielded channel, providing a signal loop, and reducing interference between transmitted signals.

[0009] As a preferred embodiment of the above technical solution, the socket connector includes a housing, and the plug connector includes a housing, both of which are provided with mounting holes and guide posts.

[0010] As a preferred embodiment of the above technical solution, both the socket connector and the plug connector are provided with C-shaped holes, and a grounding pin is press-fitted and fixed inside the C-shaped holes.

[0011] As a preferred embodiment of the above technical solution, the grounding pin includes a grounding pin head and an interference fit post.

[0012] As a preferred embodiment of the above technical solution, the first base of the socket includes a first positioning ball, a first positioning groove, a plug block, and a first positioning ring, and the second base of the socket includes a second positioning ball, a second positioning groove, a socket hole, and a second positioning ring, wherein the socket hole and the plug block are matched.

[0013] As a preferred embodiment of the above technical solution, the inner wall of the shielding cavity is fitted with shielding metal.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. Modular structure, which facilitates expansion to meet different core count requirements;

[0016] 2. Each differential pair is enclosed in an independent metal cavity, reducing mutual interference between signals;

[0017] 3. Combining flexible pinhole contact and fisheye termination forms to meet the requirements of high vibration and impact and high-speed transmission. Attached Figure Description

[0018] Figure 1 The diagram shown is a structural schematic of the socket connector and plug connector in their disassembled states according to the present invention;

[0019] Figure 2 The diagram shown is an exploded view of the internal structure of the socket connector in this invention;

[0020] Figure 3 The diagram shown is a structural schematic of the socket connector in this invention;

[0021] Figure 4The diagram shown is a structural schematic of the socket first base, socket second base and first contact member in the assembled state of the present invention;

[0022] Figure 5 The diagram shown is a structural schematic of the fisheye needle and the first contact element in this invention;

[0023] Figure 6 The diagram shown is a structural schematic of the first base and the second base of the socket in this invention;

[0024] Figure 7 The diagram shown is a schematic diagram of the grounding pin structure in this invention;

[0025] Figure 8 The diagram shown is a structural schematic of the first base of the plug, the second base of the plug, and the second contact in the assembled state of the present invention.

[0026] Figure 9 The diagram shown is a structural schematic of the fisheye needle, the second contact element, and the docking element in this invention;

[0027] Figure 10 The diagram shown is a structural schematic of the assembled state of the docking component and the first contact component in this invention.

[0028] Figure Labels

[0029] 1. Socket connector; 11. Housing; 111. Shielding cavity; 112. Mounting hole; 113. C-shaped hole; 114. Guide post; 121. First base of socket; 1211. First positioning ball; 1212. First positioning groove; 1213. Insert block; 1214. First positioning ring; 122. Second base of socket; 1221. Second positioning ball; 1222. Second positioning groove; 1223. Socket; 1224. Second positioning ring; 123. Fisheye pin; 1231. Fisheye pin tip; 1232. Positioning hole; 1233. 1. Connecting block; 1234. Contact rod; 124. First contact element; 1241. First contact element body; 1242. First positioning step; 1243. Contact hole; 13. Grounding pin; 131. Grounding pin tip; 132. Interference fitting post; 2. Plug connector; 221. Plug first base; 222. Plug second base; 223. Second contact element; 2231. Second contact element body; 2232. Second positioning step; 2233. Crimping hole; 224. Butt joint; 2241. Butt joint post; 2242. Butt joint round head. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0031] As attached Figure 1As shown, a high-reliability, high-speed electrical connector includes a socket connector 1 and a plug connector 2, both of which are through-hole type and are fixed on two parallel printed circuit boards. The connectors use a fisheye crimping method to connect the contacts to the printed circuit boards. The connector of this invention has a virtual modular structure, with each differential unit fixed inside the outer shell 11 of the housing. The differential units are shielded from each other by the metal shell, providing excellent shielding. Different specifications of high-speed connectors differ only in the number of pins and size; they are identical in structure and high-speed transmission performance.

[0032] As attached Figure 2 Appendix Figure 3 As shown, the outer casing 11 contains several shielding cavities 111. The grounding pin 123 is press-fitted into the C-shaped hole 113 via an interference fit post 132, and the guide post 114 serves as a guide for docking. Locking nuts are mortised and secured in the mounting holes 112 on both sides of the outer casing 11. After the grounding pin 123 and the internal components of the outer casing 11 are assembled, they are fixed with adhesive inside the cavities.

[0033] As attached Figure 4 -Appendix Figure 6 As shown, the socket includes a first base 121, a second base 122, and a fisheye pin 123 and a first contact 124. The fisheye pin 123 has a fisheye pin head 1231 at one end, which terminates with the printed circuit board. The other end is rounded to form a contact rod 1234. The first contact 124 has a four-lobed groove at one end, which, after being narrowed, allows for elastic contact with the contact rod 1234. The fisheye pin 123 and the first contact 124 are inserted to form a socket contact, which is placed between the first base 121 and the second base 122. The first base 121 has a plug block 1213, and the second base 122 has a socket hole 1223. The two are interlocked to complete the splicing of the first base 121 and the second base 122, and to fix the first contact 124 between them. To avoid the fisheye pin 123 from being damaged due to tolerances... 3. To mitigate the movement of the first base 121 and the second base 122 of the socket, a positioning hole 1232 is designed in the fisheye pin 123, which corresponds to the second positioning ball 1221 and the first positioning ball 1211 on the first base 121 and the second base 122 of the socket. The first contact 124 is fixed by the cooperation of the first positioning step 1242 with the first positioning ring 1214 and the second positioning ring 1224 on the first base 121 and the second base 122 of the socket. After the first base 121 and the second base 122 of the socket are assembled into a composite assembly, the contact hole 1243 in the first contact 124 for mating with the plug connector 2 is on the outside of the composite assembly.

[0034] As attached Figure 7 As shown, the grounding pin 123 is press-fitted into the C-shaped hole 113 by the interference pin 132.

[0035] As attached Figure 8 -Appendix Figure 10 As shown, the structure of the plug connector 2 is similar to that of the socket connector 1. The identical parts will not be described again. The difference lies in the internal fisheye pin 123, second contact 223, and mating part 224. The contact rod 1234 of the fisheye pin 123 elastically engages with the four-lobed groove structure on the second contact 223 to form an electrical connection. The crimping hole 2233 on the second contact 223 and the mating post 2241 on the mating part 224 are plastically pressed together using a tooling. Thus, the fisheye pin 123, second contact 223, and mating part 224 form the pin contact. The pin contact is similar to the fisheye pin 123 and first contact 124 in the socket connector 1, which are installed inside the first base 121 and second base 122 of the socket, and similarly, are installed inside the first base 221 and second base 222 of the plug. The mating round head 2242 of the mating part 224 is used to mate with the contact hole 1243 on the plug connector 2. Due to its elastic structure, in order to avoid accidental contact and deformation, the mating part 224 is set inside the first base 221 and the second base 222 of the plug.

[0036] During the mating process of the plug connector 2 and the socket connector 1, the mating round head 2242 of the mating member 224 is inserted into the contact hole 1243. Since the inner diameter of the contact hole 1243 is smaller than the maximum outer diameter of the mating round head 2242, the mating round head 2242 undergoes elastic deformation, completing the electrical connection between the first contact member 124 and the mating member 224. At this point, a complete electrical connection is formed between the fisheye pin 123 at the socket connector 1 end, the first contact member 124, the mating member 224, the second contact member 223, and the fisheye pin 123 at the plug connector 2 end. The fisheye pin 123 is a stamped part, while the first contact member 124 and the second contact member 223 are machined parts. This contact structure combines the vibration-resistant contact capability of the elastic pin hole with the high-speed transmission capability of the fisheye.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A highly reliable, high-speed electrical connector, comprising a socket connector (1) and a plug connector (2), characterized in that, Both the socket connector (1) and the plug connector (2) are provided with a shielding cavity (111). The socket connector (1) is provided with a first contact (124). The first contact (124) is surrounded by a socket first base (121) and a socket second base (122). The plug connector (2) is provided with a second contact (223). The second contact (223) is surrounded by a plug first base (221) and a plug second base (222). The head ends of the first contact (124) and the second contact (223) are both inserted with fisheye pins (123). The tail end of the second contact (223) is inserted with a mating piece (224). The fisheye needle (123) includes a fisheye needle head (1231), a positioning hole (1232), a connecting block (1233), and a contact rod (1234). The head ends of the first contact (124) and the second contact (223) are both machined into a four-lobed groove structure and match the contact rod (1234). The tail end of the first contact (124) is provided with a contact hole (1243), and the tail end of the second contact (223) is provided with a crimping hole (2233). The mating part (224) includes a mating post (2241) and a mating round head (2242). The mating post (2241) matches the crimping hole (2233), and the mating round head (2242) matches the contact hole (1243). The fisheye pin (123) and first contact (124) at the socket connector (1) end and the mating part (224), second contact (223), and fisheye pin (123) at the plug connector (2) end form a complete electrical connection. The fisheye pin (123) is a stamped part, and the first contact (124) and second contact (223) are machined parts. The first base (121) of the socket includes a first positioning ball (1211), a first positioning groove (1212), a plug (1213), and a first positioning ring (1214). The second base (122) of the socket includes a second positioning ball (1221), a second positioning groove (1222), a socket (1223), and a second positioning ring (1224). The socket (1223) and the plug (1213) are matched.

2. The high-reliability, high-speed electrical connector according to claim 1, characterized in that, Both the socket connector (1) and the plug connector (2) are provided with C-shaped holes (113), and a grounding pin (13) is press-fitted and fixed inside the C-shaped holes (113).

3. The high-reliability, high-speed electrical connector according to claim 2, characterized in that, The grounding pin (13) includes a grounding pin head (131) and an interference pin (132).

4. The high-reliability, high-speed electrical connector according to claim 1, characterized in that, The inner wall of the shielding cavity (111) is fitted with shielding metal.

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