High-speed differential signal connector

Abstract

The present invention discloses a high-speed differential signal connector, comprising a male connector and a female connector, wherein the male connector is connected to a first cable, the male connector comprises an insulating seat and first and second male terminals and a first metal shielding shell, the first and second contact portions of the first and second male terminals both extend out of the front end of the insulating seat and the first metal shielding shell and are distributed in parallel, the first and second welding legs of the first and second male terminals both extend out of the rear end of the insulating seat and the first metal shielding shell and are distributed in parallel; the first and second conductors extending from the end of the first cable are respectively welded and fixed to the first and second welding legs and are connected; the first and second male terminals are respectively formed with first and second main body portions protruding from the outside to the inside and distributed in parallel with each other, the axial center spacing between the first and second contact portions is 1.6-2.0mm; the distance between the first and second main body portions is less than or equal to 0.4mm; the first and second conductors are respectively welded and fixed to the inner sides of the first and second welding legs.

Description

Technical field:

[0001] The present invention relates to the technical field of connector products, and in particular to a high-speed differential signal connector. Background technology:

[0002] Electrical connectors are used to realize electrical connection between components. They not only realize electrical connection, but also signal connection, ensuring the stable operation of the device / equipment.

[0003] The Chinese utility model patent with patent number ZL202223293944.1 discloses a high-speed differential signal connector. The high-speed differential signal connector includes: a terminal module, the terminal module includes: at least one conductive terminal and at least one insulator, the at least one insulator is molded on the at least one conductive terminal and wraps the at least one conductive terminal; a shielding shell, the shielding shell defines a receiving cavity, the terminal module is detachably fixed in the receiving cavity; and a plastic shell, the plastic shell defines a mating channel, the shielding shell is detachably fixed in the mating channel, wherein the material of at least one insulator is different from that of the plastic shell.

[0004] In the patent specification and its drawings, there are two conductive terminals, and the spacing between the two conductive terminals is not designed as a requirement. The spacing between the contact portions of the two conductive terminals extending from the front end of the insulator, the spacing between the contact portions of the two conductive terminals fixedly connected to the insulator, and the spacing between the pin portions of the two conductive terminals extending from the rear end of the insulator are not limited in size. This will affect the characteristic impedance of the entire high-speed differential signal connector, and thus affect high-frequency signal transmission.

[0005] In view of this, the inventor proposes the following technical solution. Summary of the invention:

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a high-speed differential signal connector.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solution: the high-speed differential signal connector includes a male connector and a female connector that are plugged into each other and conductive, the male connector is connected to a first cable, wherein the male connector includes an insulating seat, a first male terminal and a second male terminal fixed in the insulating seat in pairs, and a first metal shielding shell fixedly wrapped around the outside of the insulating seat, the first contact portion of the first male terminal and the second contact portion of the second male terminal both extend out of the front end of the insulating seat and the first metal shielding shell and are distributed in parallel, and the first welding leg of the first male terminal and the second welding leg of the second male terminal both extend out of the insulating seat and the first metal shielding shell. The first and second conductors extending from the end of the first cable are respectively welded and fixed to the first and second welding legs and are connected; the first male terminal and the second male terminal are respectively formed with a first main body and a second main body protruding from the outside to the inside and distributed parallel to each other in the middle, and the first and second main bodies are fixed inside the insulating seat; the distance between the axis of the first contact portion and the axis of the second contact portion is 1.6-2.0mm; the distance between the first main body and the second main body is less than or equal to 0.4mm; the first conductor is welded and fixed to the inner side of the first welding leg, and the second conductor is welded and fixed to the inner side of the second welding leg.

[0008] Furthermore, in the above technical solution, the distance between the axis center of the first contact portion and the axis center of the second contact portion is 1.8 mm; the distance between the first main body portion and the second main body portion is 0.36-0.38 mm; the structure and size of the first male terminal and the second male terminal are the same, and are distributed in a mirror-symmetrical manner.

[0009] Furthermore, in the above technical solution, the first conductor and the second conductor are distributed parallel to each other, and the spacing between them is 0.5-0.6mm, and the lengths of the first conductor and the second conductor are the same, both of which are 0.8-1.2mm; the inner side of the first solder foot portion and the inner side of the second solder foot portion are respectively provided with a first groove and a second groove, and the first conductor and the second conductor both extend into the first groove and the second groove.

[0010] Further, in the above technical solution, the female socket connector includes a plastic socket, a first female socket terminal and a second female socket terminal arranged on the plastic socket, and a second metal shielding shell wrapped and fixed to the outer periphery of the plastic socket, the first welding leg of the first female socket terminal and the second welding leg of the second female socket terminal are respectively welded and fixed to the third conductor and the fourth conductor extending from the end of the second cable, and a pair of slots for inserting the male connector are formed between the front end of the plastic socket and the second metal shielding shell, and the bottom of the pair of slots are provided with a first plug hole and a second plug hole for inserting the first contact part and the second contact part respectively, and the first pair of plug parts of the first female socket terminal and the second pair of plug parts of the second female socket terminal are respectively exposed at the first plug hole and the second plug hole.

[0011] Further, in the above technical solution, the plastic seat is respectively provided with a first travel limit groove and a second travel limit groove on both sides of the rear opening of the first socket; the plastic seat is respectively provided with a third travel limit groove and a fourth travel limit groove on both sides of the rear opening of the second socket; the end of the first female socket terminal is formed with a first clamping arm and a second clamping arm which are spaced and can produce elastic deformation, and the cross-sections of the first clamping arm and the second clamping arm are both arc-shaped, and a first conducting space corresponding to the first socket and for the first contact portion of the first male terminal to be inserted is formed between the first clamping arm and the second clamping arm, and the ends of the first clamping arm and the second clamping arm are also bent outward to form a first travel limit plate and a second travel limit plate, and the first travel limit plate and the second travel limit plate are respectively The third and fourth clamping arms are respectively embedded in the first stroke limit groove and the second stroke limit groove, and can move in the first stroke limit groove and the second stroke limit groove respectively; the end of the second female socket terminal is formed with a third clamping arm and a fourth clamping arm which are spaced apart and can produce elastic deformation, and the cross-sections of the third clamping arm and the fourth clamping arm are both arc-shaped, and a second conducting space corresponding to the second jack and for the second contact portion of the second male terminal to be inserted is formed between the third clamping arm and the fourth clamping arm, and the ends of the third clamping arm and the fourth clamping arm are also bent outward to form a third stroke limit plate and a fourth stroke limit plate, which are respectively embedded in the third stroke limit groove and the fourth stroke limit groove, and can move in the third stroke limit groove and the fourth stroke limit groove respectively.

[0012] Further, in the above technical scheme, the upper and lower sides of the front end of the second metal shielding shell are respectively formed with a first sheet and a second sheet that protrude horizontally forward and can produce elastic deformation for increasing the plug-in and pull-out force; the front end of the plastic seat is provided with a groove that passes through the upper and lower end surfaces, and the first sheet and the second sheet respectively cover the upper and lower openings of the groove to form the said matching slot; the upper and lower surfaces of the first sheet and the second sheet are both formed with a first positioning bulge and a second positioning bulge that are concave from the outside to the inside; the front end of the insulating seat is provided with a positioning step that protrudes outside the upper and lower end surfaces, and the upper and lower inner sides of the positioning step are respectively formed with a first positioning buckle and a second positioning buckle; when the insulating seat is inserted into the matching slot, the positioning step passes over the first positioning bulge and the second positioning bulge, and the first positioning buckle and the second positioning buckle are respectively engaged and positioned with the rear sides of the first positioning bulge and the second positioning bulge; the upper and lower sides of the front end of the first metal shielding shell are respectively formed with a first elastic arm and a second elastic arm for increasing the plug-in and pull-out force, and the first elastic arm and the second elastic arm are respectively pressed and contacted with the inner wall of the first positioning bulge and the inner wall of the second positioning bulge.

[0013] Furthermore, in the above technical solution, the female socket connector also includes a positioning seat arranged on the plastic seat and simultaneously limiting the first female socket terminal and the second female socket terminal to prevent the first female socket terminal and the second female socket terminal from being positioned, a connecting seat integrally injection molded at the rear end of the plastic seat and fixedly connected to the positioning seat, the second metal shielding shell wraps and is fixed to the periphery of the positioning seat and the connecting seat, and the connecting seat integrally wraps the first and second welding legs and the third and fourth conductors and the second cable end; the front ends of the first jack and the second jack are both provided with guide holes that are smaller inside and larger outside; the rear end of the plastic seat is provided with an installation groove, and a plurality of holes are provided at the bottom of the installation groove. The second positioning hole; the first female socket terminal and the second female socket terminal are both provided with a third positioning hole, and the lower end of the positioning seat is provided with a second limiting groove and a third limiting groove which are respectively adapted to the first female socket terminal and the second female socket terminal, and the second limiting groove and the third limiting groove are both formed with three positioning columns protruding downward from the lower end of the positioning seat, the lower end of the positioning seat is embedded in the installation groove, and the second limiting groove and the third limiting groove are respectively sleeved on the outer periphery of the upper ends of the first female socket terminal and the second female socket terminal, and the three positioning columns also pass through the third positioning holes on the first female socket terminal and the second female socket terminal and then are embedded in the second positioning hole of the plastic seat.

[0014] Furthermore, in the above technical solution, a gap is formed between the lower end surfaces of the first female socket terminal and the second female socket terminal and the installation groove, a fourth limiting groove is arranged on one side of the upper end of the positioning seat, and a first connecting portion is integrally formed on the lower side of the connecting seat to fill the gap and wrap the three positioning columns, and a first limiting block is integrally formed on the upper side of the connecting seat and is integrally fixed in the fourth limiting groove.

[0015] Further, in the above technical solution, the insulating seat includes: a first insulator, which is integrally injection molded in the middle of the first male terminal and the second male terminal, a first window penetrating the upper and lower end surfaces is provided at the front of the first insulator, a first positioning hole is formed on the inner wall of the first window, and a revealing groove connected to the first window is provided in the middle of the upper end surface of the first insulator, and the first main body and the second main body are exposed as a whole in the first window and the revealing groove; a second insulator, which is integrally injection molded at the rear end of the first insulator by secondary molding, and wraps the first and second welding legs and the end of the first cable, and the front end of the second insulator is also integrated into and filled and fixed in the first window and the revealing groove, and also covers the first main body and the second main body, and the positioning block formed at the front end of the second insulator is also embedded in the first positioning hole; the upper and lower sides of the front end of the first insulator are both provided with a first limiting groove, and the upper and lower sides of the front end of the first metal shielding shell are both formed with a positioning piece that can generate elastic deformation, and the positioning piece is embedded in the first limiting groove and contacts with the inner wall of the first limiting groove.

[0016] Further, in the above technical solution, the first metal shielding shell includes an upper shell and a lower shell that are interlocked and fixed with each other, the middle outer portion of the upper shell is bent to form a first buckle plate, the middle portion of the first buckle plate is formed with a first card protruding outward, and the end of the first buckle plate is bent to form a first hook; the outer side of the insulating seat is provided with a first groove body adapted to the first buckle plate and a hook groove connected to the first groove body and adapted to the first hook, the first buckle plate is nested in the first groove body, and the first hook is engaged with the hook groove for positioning; the middle outer portion of the lower shell is bent to form a second buckle plate, the middle portion of the second buckle plate is provided with a first clamping hole, the second buckle plate is fitted to the outer periphery of the first buckle plate, and the first card is pressed into the first clamping hole to lock the second buckle plate with the first buckle plate.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: by designing the spacing between the first male terminal and the second male terminal, the characteristic impedance is adjusted to meet the characteristic impedance requirements of the connector, and high-speed transmission of high-frequency differential signals is achieved. In addition, the first conductor is welded and fixed to the inner side of the first welding leg, and the second conductor is welded and fixed to the inner side of the second welding leg. The design can also adjust the characteristic impedance. If the first conductor and the second conductor are respectively welded to the outer sides of the first welding leg and the second welding leg, the characteristic impedance of the connector will be affected, so that the high-speed transmission of high-frequency differential signals can be further guaranteed, making the present invention extremely competitive in the market. Description of the drawings:

[0018] Figure 1 is a stereogram of the present invention;

[0019] Figure 2 It is a split diagram of the present invention;

[0020] Figure 3 is a cross-sectional view of the present invention;

[0021] Figure 4 yes Figure 3 A partial enlarged view of part A;

[0022] Figure 5 is a three-dimensional diagram of the male connector of the present invention;

[0023] Figure 6 is a stereogram of the male connector of the present invention from another perspective;

[0024] Figure 7 is a three-dimensional exploded view of the male connector of the present invention;

[0025] Figure 8 is a stereoscopic diagram of the male connector of the present invention after the upper shell is removed;

[0026] Fig. 9 is a structural diagram of the temporal portion of the male connector of the present invention;

[0027] Fig.10 is an assembly diagram of the first male terminal and the second male terminal in the present invention;

[0028] Fig.11 is a stereogram of the female connector of the present invention;

[0029] Fig.12 It is a three-dimensional exploded view of the female connector in the present invention;

[0030] Fig.13 is a three-dimensional diagram of the upper housing of the present invention;

[0031] Fig.14 This is a three-dimensional diagram of the female connector of the present invention after the upper shell is removed;

[0032] Fig.15 It is an internal structure diagram of the female connector in the present invention. Specific implementation method:

[0033] The present invention is further described below in conjunction with specific embodiments and drawings.

[0034] See Figure 1-15 As shown, a high-speed differential signal connector includes a male connector 100 and a female connector 200 that are plugged into and conductive with each other, which is used for high-frequency differential signal transmission and can achieve high-speed signal transmission.

[0035] The male connector 100 is connected to a first cable 300, wherein the male connector 100 includes an insulating seat 1, a first male terminal 2 and a second male terminal 3 fixed in the insulating seat 1 in pairs, and a first metal shielding shell 4 fixedly wrapped around the outside of the insulating seat 1, the first metal shielding shell 4 has a good noise shielding effect, the first contact portion 21 of the first male terminal 2 and the second contact portion 31 of the second male terminal 3 both extend out of the insulating seat 1 and the front end of the first metal shielding shell 4 and are distributed in parallel, and the first welding leg 22 of the first male terminal 2 and the second welding leg 32 of the second male terminal 3 both extend out of the rear end of the insulating seat 1 and the first metal shielding shell 4 and are distributed in parallel; the first conductor 301 and the second conductor 302 extending from the end of the first cable 300 are respectively welded and fixed to the first welding leg 22 and the second welding leg 32 and are conductive.

[0036] The first male terminal 2 and the second male terminal 3 are respectively formed with a first main body 23 and a second main body 33 protruding from the outside to the inside and distributed parallel to each other in the middle, and the first main body 23 and the second main body 33 are fixed inside the insulating seat 1; wherein, the distance between the axis of the first contact portion 21 and the axis of the second contact portion 31 is 1.6-2.0mm; the distance between the first main body 23 and the second main body 33 is less than or equal to 0.4mm; by designing the spacing between the various parts of the first male terminal 2 and the second male terminal 3, the characteristic impedance is adjusted to meet the characteristic impedance requirements of the connector, thereby realizing high-speed transmission of high-frequency differential signals. In addition, the first conductor 301 is welded and fixed to the inner side of the first solder leg 22, and the second conductor 302 is welded and fixed to the inner side of the second solder leg 32. The design can also adjust the characteristic impedance. If the first conductor 301 and the second conductor 302 are respectively welded to the outer sides of the first solder leg 22 and the second solder leg 32, the characteristic impedance of the connector will be affected, thereby further ensuring the high-speed transmission of high-frequency differential signals, making the present invention highly competitive in the market.

[0037] This embodiment is the optimal embodiment, and the specific numerical settings of each parameter are as follows: the distance between the axis of the first contact portion 21 and the axis of the second contact portion 31 is 1.8 mm; the distance between the first main body portion 23 and the second main body portion 33 is 0.36-0.38 mm, specifically 0.36 mm. The specific numerical settings of the above parameters can ensure that the characteristic impedance of the connector reaches the optimal level.

[0038] Furthermore, the first conductor 301 and the second conductor 302 are distributed parallel to each other, and the spacing between them is 0.5-0.6mm, and the optimal is 0.56mm; the lengths of the first conductor 301 and the second conductor 302 are the same, both of which are 0.8-1.2mm, and the optimal is 1mm; if the lengths of the first conductor 301 and the second conductor 302 are longer than 1.2mm, it will also affect the characteristic impedance of the connector, and a length of 1mm is the best choice. In addition, the spacing between the first conductor 301 and the second conductor 302 is 0.56mm, which can also effectively ensure the characteristic impedance requirements of the connector.

[0039] In order to ensure the structural stability of the first conductor 301 and the second conductor 302 assembled with the first welding leg 22 and the second welding leg 32 respectively, the following design is also made: the inner side of the first welding leg 22 and the inner side of the second welding leg 32 are respectively provided with a first groove 221 and a second groove 321, and the first conductor 301 and the second conductor 302 are both extended into the first groove 221 and the second groove 321, so as to ensure the stability of welding. In addition, the inner walls of the first groove 221 and the second groove 321 can be set to be arc-shaped, which can better contact with the first welding leg 22 and the second welding leg 32. Compared with the point contact between the plane and the arc surface, the contact area can be increased, thereby ensuring that the welding fixing structure is more stable and improving the quality of the product. Alternatively, the side surfaces of the first weld leg 22 and the second weld leg 32 are flattened to form a plane. Compared with the point contact between the plane and the curved surface, the planes of the first weld leg 22 and the second weld leg 32 also form a large-area contact with the inner walls of the first groove 221 and the second groove 321, respectively, thereby ensuring that the welding fixing structure is more stable and improving the quality of the product.

[0040] The structures and sizes of the first male terminal 2 and the second male terminal 3 are the same, and are distributed in a mirror-symmetrical manner. Any one of the first male terminal 2 and the second male terminal 3 can be produced, and can be used as the first male terminal 2 and the second male terminal 3 at the same time. Only one set of molds is needed to achieve this, and the production cost is effectively reduced, which is conducive to improving market competitiveness.

[0041] The female connector 200 includes a plastic seat 5, a first female terminal 61 and a second female terminal 62 arranged on the plastic seat 5, and a second metal shielding shell 7 wrapped and fixed to the outer periphery of the plastic seat 5. The second metal shielding shell 7 has a good noise shielding effect. The first welding leg 611 of the first female terminal 61 and the second welding leg 621 of the second female terminal 62 are respectively welded and fixed to the third conductor 401 and the fourth conductor 402 extending from the end of the second cable 400. A pair of slots 50 for inserting the male connector 100 is formed between the front end of the plastic seat 5 and the second metal shielding shell 7. The bottom of the pair of slots 50 is provided with a first plug hole 501 and a second plug hole 502 for inserting the first contact portion 21 and the second contact portion 31 respectively. The first pair of plug parts 612 of the first female terminal 61 and the second pair of plug parts 622 of the second female terminal 62 are respectively exposed at the first plug hole 501 and the second plug hole 502. Since the first female socket terminal 61 and the second female socket terminal 62 are not exposed in the slot 50 , the first female socket terminal 61 and the second female socket terminal 62 can be better protected, thereby increasing the service life of the female socket connector 200 .

[0042] The front ends of the first jack 501 and the second jack 502 are both provided with a guide hole 500 which is small inside and large outside. The guide hole 500 has a good guiding effect. When the first male terminal 2 and the second male terminal 3 are respectively plugged into the first jack 501 and the second jack 502, the guide hole 500 has a good guiding effect, thereby guiding the first male terminal 2 and the second male terminal 3 to be smoothly and smoothly inserted into the first jack 501 and the second jack 502, respectively, thereby improving the smoothness of the plugging.

[0043] In addition, the female connector 200 also includes a positioning seat 8 that is arranged on the plastic seat 5 and simultaneously limits the first female terminal 61 and the second female terminal 62 to prevent the first female terminal 61 and the second female terminal 62 from being formed, and a connecting seat 9 that is integrally injection molded at the rear end of the plastic seat 5 and fixedly connected to the positioning seat 8. The positioning seat 8 ensures that the first female terminal 61 and the second female terminal 62 are stably installed on the plastic seat 5, and can effectively prevent the first female terminal 61 and the second female terminal 62 from retreating during the plug-in process, thereby ensuring the stability and quality of the plug-in. The connecting seat 9 can form a stable assembly with the plastic seat 5 and the positioning seat 8 to form an inseparable whole, and its assembly structure is more stable. The second metal shielding shell 7 is wrapped and fixed to the periphery of the positioning seat 8 and the connecting seat 9 to further ensure the stability of the assembly structure. The connecting seat 9 integrally wraps the first and second welding feet and the third and fourth conductors and the end of the second cable 400, which can form an inseparable structure, thereby ensuring that the entire female connector 200 has a more stable structure and higher quality.

[0044] The plastic seat 5 is respectively provided with a first travel limit groove 51 and a second travel limit groove 52 on both sides of the rear opening of the first plug hole 501; the plastic seat 5 is respectively provided with a third travel limit groove 53 and a fourth travel limit groove 54 on both sides of the rear opening of the second plug hole 502; the end of the first female seat terminal 61 is formed with a first clamping arm 613 and a second clamping arm 614 that are spaced and can produce elastic deformation, and the cross-sections of the first clamping arm 613 and the second clamping arm 614 are both arc-shaped, and a first guiding space 610 corresponding to the first plug hole 501 and for the first contact portion 21 of the first male terminal 2 to be inserted is formed between the first clamping arm 613 and the second clamping arm 614, and the ends of the first clamping arm 613 and the second clamping arm 614 are also bent outward to form a first travel limit piece 615 and a second travel limit piece 616. The travel limit piece 615 and the second travel limit piece 616 are respectively embedded in the first travel limit groove 51 and the second travel limit groove 52, and can move in the first travel limit groove 51 and the second travel limit groove 52 respectively. When the first contact portion 21 of the first male terminal 2 is inserted into the first conducting space 610, the first clamping arm 613 and the second clamping arm 614 will expand outward. At this time, the first travel limit piece 615 and the second travel limit piece 616 move in the first travel limit groove 51 and the second travel limit groove 52 respectively, that is, the first travel limit groove 51 and the second travel limit groove 52 limit the opening angle of the first travel limit piece 615 and the second travel limit piece 616, so that the first clamping arm 613 and the second clamping arm 614 can firmly wrap the first contact portion 21 by expanding to form an elastic restoring force, thereby ensuring the stability of the plug-in conduction.

[0045] The end of the second female terminal 62 is formed with a third clamping arm 623 and a fourth clamping arm 624 which are spaced apart and can produce elastic deformation. The cross-sections of the third clamping arm 623 and the fourth clamping arm 624 are both arc-shaped. A second conducting space 620 corresponding to the second jack 502 and for the second contact portion 31 of the second male terminal 3 to be inserted is formed between the third clamping arm 623 and the fourth clamping arm 624. The ends of the third clamping arm 623 and the fourth clamping arm 624 are also bent outward to form a third travel limit piece 625 and a fourth travel limit piece 626. The third travel limit piece 625 and the fourth travel limit piece 626 are respectively embedded in the third travel limit groove 53 and the fourth travel limit groove 54, and can move in the third travel limit groove 53 and the fourth travel limit groove 54, respectively. When the second contact portion 31 of the second male terminal 3 is inserted into the second conducting space 620, the third clamping arm 623 and the fourth clamping arm 624 will expand outward. At this time, the third stroke limit plate 625 and the fourth stroke limit plate 626 move in the third stroke limit groove 53 and the fourth stroke limit groove 54 respectively, that is, the third stroke limit groove 53 and the fourth stroke limit groove 54 limit the opening angle of the third stroke limit plate 625 and the fourth stroke limit plate 626, so that the third clamping arm 623 and the fourth clamping arm 624 can firmly wrap the second contact portion 31 by expanding to form an elastic restoring force, thereby ensuring the stability of the plug-in conduction.

[0046] The upper and lower sides of the front end of the second metal shielding shell 7 are respectively formed with a first sheet 711 and a second sheet 721 that protrude horizontally forward and can produce elastic deformation for increasing the plug-in force. In this embodiment, the second metal shielding shell 7 includes an upper shell 71 and a lower shell 72 that are snap-fitted and fixed together, and the first sheet 711 and the second sheet 721 are respectively formed at the front ends of the upper shell 71 and the lower shell 72.

[0047] The front end of the plastic seat 5 is provided with a groove body 55 that passes through the upper and lower end surfaces. The first sheet 711 and the second sheet 721 respectively cover the upper and lower openings of the groove body 55 to form the pair of slots 50. At this time, the pair of slots 50 can be expanded. When the first sheet 711 and the second sheet 721 are stretched outward, the pair of slots 50 is expanded; the upper and lower surfaces of the first sheet 711 and the second sheet 721 are formed with a first positioning convex bump 712 and a second positioning convex bump 722 that are concave from the outside to the inside, and the front end of the insulating seat 1 is provided with a positioning step 13 protruding from the upper and lower end surfaces, and the upper and lower inner sides of the positioning step 13 are respectively formed with a first positioning convex bump 712 and a second positioning convex bump 722 that are concave from the outside to the inside. The buckle 111 and the second positioning buckle 121, when the insulating seat 1 is inserted into the slot 50, the positioning step 13 passes over the first positioning convex bump 712 and the second positioning convex bump 722, and the first positioning buckle 111 and the second positioning buckle 121 are respectively engaged with the rear sides of the first positioning convex bump 712 and the second positioning convex bump 722 to increase the interference force, and a certain force is required to pull the insulating seat 1 relative to the slot 50, thereby preventing the male connector 100 from being accidentally pulled out relative to the female connector 200, achieving stable insertion and forming a stable conduction, which is more suitable for high-speed transmission of differential signals and meets the requirements of high-speed transmission of signals. At the same time, the first metal shielding shell 4 contacts the second metal shielding shell 7, so as to form a better contact effect in the later stage, so as to more effectively prevent noise interference, and is more suitable for high-speed transmission of differential signals. Outward; the upper and lower sides of the front end of the first metal shielding shell 4 are respectively formed with a first elastic arm 411 and a second elastic arm 421 for increasing the plugging and pulling force. The first elastic arm 411 and the second elastic arm 421 are respectively pressed and contacted with the inner wall of the first positioning convex bump 712 and the inner wall of the second positioning convex bump 722, which can not only enhance the plugging and pulling force, but also ensure that the contact between the first metal shielding shell 4 and the second metal shielding shell 7 is more stable, so as to form a better contact effect in the later stage, thereby being able to more effectively prevent noise interference and be more suitable for high-speed transmission of differential signals.

[0048] The rear end of the plastic seat 5 is provided with a mounting groove 56, and a plurality of second positioning holes 561 are provided at the bottom of the mounting groove 56; the first female seat terminal 61 and the second female seat terminal 62 are provided with a third positioning hole 60, and the lower end of the positioning seat 8 is provided with a second limiting groove 81 and a third limiting groove 82 respectively adapted to the first female seat terminal 61 and the second female seat terminal 62, and the second limiting groove 81 and the third limiting groove 82 are formed with three positioning columns 80 protruding downward from the lower end of the positioning seat 8, and the lower end of the positioning seat 8 is embedded in the mounting groove 56, and the second limiting groove 81 The third limiting groove 82 is respectively sleeved on the outer periphery of the upper end of the first socket terminal 61 and the second socket terminal 62, so as to achieve the purpose of stably limiting the first socket terminal 61 and the second socket terminal 62, and the three positioning columns 80 also pass through the third positioning holes 60 on the first socket terminal 61 and the second socket terminal 62 and then embed into the second positioning holes 561 of the plastic seat 5, so as to stably install the first socket terminal 61 and the second socket terminal 62 on the plastic seat 5, and achieve the limitation in multiple directions such as up and down, left and right, front and back, thereby ensuring the stability of the assembly structure and improving the quality of the product. In addition, a gap is formed between the lower end surfaces of the first female socket terminal 61 and the second female socket terminal 62 and the installation groove 56, and a fourth limiting groove 83 is provided on one side of the upper end of the positioning seat 8. The lower side of the connecting seat 9 is integrally formed with a first connecting portion 91 that fills the gap and wraps the three positioning columns 80, and the first limiting block 92 integrally formed on the upper side of the connecting seat 9 is integrally fixed in the fourth limiting groove 83, so that the connecting seat 9 and the positioning seat 8 are stably installed on the plastic seat 5, making the structure of the entire female socket connector 200 more stable.

[0049] The insulating seat 1 comprises: a first insulator 11 and a second insulator 12, wherein the first insulator 11 is integrally injection-molded in the middle of the first male terminal 2 and the second male terminal 3, and its assembly structure is extremely stable. A first window 112 penetrating the upper and lower end surfaces is provided at the front of the first insulator 11, and a first positioning hole 113 is formed on the inner wall of the first window 112. A revealing groove 14 communicating with the first window 112 is provided at the middle of the upper end surface of the first insulator 11, and the first main body 23 and the second main body 33 are integrally exposed in the first window 112 and the revealing groove 14. Therefore, after the first insulator 11 is injection-molded, it can also be determined whether the spacing between the first main body 23 and the second main body 33 meets the design requirements of the characteristic impedance of the connector. If not, The second insulator 12 is integrally injection molded at the rear end of the first insulator 11 by secondary molding, and wraps the first and second welding legs and the end of the first cable 300. The structure is extremely stable, ensuring the quality of the entire male connector. The front end of the second insulator 12 is also integrated into and filled in the first window 112 and the exposure groove 14, and also covers the first main body 23 and the second main body 33. The positioning block 122 formed at the front end of the second insulator 12 is also embedded in the first positioning hole 113, so that the second insulator 12 and the first insulator 11 form an inseparable whole. The structure is extremely firm and will not fall off accidentally in the later stage.

[0050] The upper and lower sides of the front end of the first insulator 11 are both provided with a first limiting groove 114, and the upper and lower sides of the front end of the first metal shielding shell 4 are both formed with a positioning piece 43 that can produce elastic deformation. The positioning piece 43 is embedded in the first limiting groove 114 and contacts with the inner wall of the first limiting groove 114, so that the first metal shielding shell 4 can be more stably installed on the periphery of the insulating seat 1.

[0051] The first metal shielding shell 4 includes an upper shell 41 and a lower shell 42 which are buckled and fixed to each other, and the front ends of the upper shell 41 and the lower shell 42 are both formed with the positioning pieces 43 .

[0052] The outer periphery of the middle of the upper shell 41 is bent to form a first buckle piece 412, and the middle of the first buckle piece 412 is formed with a first card 413 protruding outward, and the end of the first buckle piece 412 is bent to form a first hook 414; the outer side of the insulating seat 1 is provided with a first groove body 116 adapted to the first buckle piece 412 and a hook groove 115 connected to the first groove body 116 and adapted to the first hook 414, the first buckle piece 412 is nested in the first groove body 116, and the first hook 414 is engaged and positioned with the hook groove 115, thereby ensuring that the upper shell 41 Stably installed on the periphery of the insulating seat 1; the middle periphery of the lower shell 42 is bent to form a second buckle piece 422, and the middle of the second buckle piece 422 is provided with a first card hole 423, the second buckle piece 422 fits on the periphery of the first buckle piece 412, and the first card 413 is pressed into the first card hole 423, so that the second buckle piece 422 is locked with the first buckle piece 412, thereby ensuring that the lower shell 42 and the upper shell 41 form a stable assembly to form the first metal shielding shell 4, so that the first metal shielding shell 4 is more stably installed on the periphery of the insulating seat 1.

[0053] In summary, the present invention adjusts the characteristic impedance by designing the spacing between the first male terminal 2 and the second male terminal 3 to meet the characteristic impedance requirements of the connector and achieve high-speed transmission of high-frequency differential signals. In addition, the first conductor 301 is welded and fixed to the inner side of the first solder leg 22, and the second conductor 302 is welded and fixed to the inner side of the second solder leg 32. The design can also adjust the characteristic impedance. If the first conductor 301 and the second conductor 302 are welded to the outer sides of the first solder leg 22 and the second solder leg 32, respectively, the characteristic impedance of the connector will be affected, thereby further ensuring high-speed transmission of high-frequency differential signals, making the present invention highly competitive in the market.

[0054] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A high-speed differential signal connector, comprising a male connector (100) and a female connector (200) that are plugged into and electrically connected to each other, wherein the male connector (100) is connected to a first cable (300), wherein: The male connector (100) comprises an insulating seat (1), a first male terminal (2) and a second male terminal (3) fixed in the insulating seat (1) in pairs, and a first metal shielding shell (4) fixedly wrapped around the outside of the insulating seat (1); the first contact portion (21) of the first male terminal (2) and the second contact portion (31) of the second male terminal (3) both extend out of the front end of the insulating seat (1) and the first metal shielding shell (4) and are arranged in parallel; the first welding leg (22) of the first male terminal (2) and the second welding leg (32) of the second male terminal (3) both extend out of the rear end of the insulating seat (1) and the first metal shielding shell (4) and are arranged in parallel; the first conductor (301) and the second conductor (302) extending from the end of the first cable (300) are respectively welded and fixed to the first welding leg (22) and the second welding leg (32) and are in conduction; The invention is characterized in that: the first male terminal (2) and the second male terminal (3) are respectively formed with a first main body (23) and a second main body (33) protruding from the outside to the inside and arranged parallel to each other in the middle, and the first main body (23) and the second main body (33) are fixed inside the insulating seat (1); The distance between the axis of the first contact portion (21) and the axis of the second contact portion (31) is 1.6-2.0 mm; The distance between the first main body portion (23) and the second main body portion (33) is less than or equal to 0.4 mm; The first conductor (301) is fixedly welded to the inner side of the first welding leg (22), and the second conductor (302) is fixedly welded to the inner side of the second welding leg (32); The female connector (200) comprises a plastic base (5), a first female terminal (61) and a second female terminal (62) arranged on the plastic base (5), and a second metal shielding shell (7) wrapped and fixed to the periphery of the plastic base (5), wherein a first welding leg (611) of the first female terminal (61) and a second welding leg (621) of the second female terminal (62) are respectively welded and fixed to a third conductor (401) and a fourth conductor (402) extending from an end of a second cable (400), and the plastic base (5) is connected to the second female terminal (61). ) is formed between the front end of the second metal shielding shell (7) and a pair of slots (50) for inserting the male connector (100), and the bottom of the pair of slots (50) is provided with a first plug hole (501) and a second plug hole (502) for inserting the first contact portion (21) and the second contact portion (31) respectively, and the first pair of plug parts (612) of the first female terminal (61) and the second pair of plug parts (622) of the second female terminal (62) are respectively exposed at the first plug hole (501) and the second plug hole (502).

2. The high-speed differential signal connector according to claim 1, characterized in that: The distance between the axis of the first contact portion (21) and the axis of the second contact portion (31) is 1.8 mm; the distance between the first main body portion (23) and the second main body portion (33) is 0.36-0.38 mm; the first male terminal (2) and the second male terminal (3) have the same structure and size and are distributed in a mirror-symmetrical manner.

3. The high-speed differential signal connector according to claim 2, characterized in that: The first conductor (301) and the second conductor (302) are arranged parallel to each other, and the spacing between them is 0.5-0.6 mm. The first conductor (301) and the second conductor (302) have the same length, which is 0.8-1.2 mm. The inner side of the first solder leg (22) and the inner side of the second solder leg (32) are respectively provided with a first groove (221) and a second groove (321), and the first conductor (301) and the second conductor (302) both extend into the first groove (221) and the second groove (321).

4. The high-speed differential signal connector according to claim 1, characterized in that: The plastic seat (5) is provided with a first travel limit groove (51) and a second travel limit groove (52) on both sides of the rear opening of the first plug hole (501); the plastic seat (5) is provided with a third travel limit groove (53) and a fourth travel limit groove (54) on both sides of the rear opening of the second plug hole (502); the end of the first female seat terminal (61) is formed with a first clamping arm (613) and a second clamping arm (614) which are spaced and can generate elastic deformation, and the first clamping arm (613) and the second clamping arm (614) are respectively provided with a first travel limit groove (51) and a second travel limit groove (52) on both sides of the rear opening of the second plug hole (502); ) have an arc-shaped cross section, a first guide space (610) corresponding to the first jack (501) and for inserting the first contact portion (21) of the first male terminal (2) is formed between the first clamping arm (613) and the second clamping arm (614), and the ends of the first clamping arm (613) and the second clamping arm (614) are further bent outward to form a first travel limit piece (615) and a second travel limit piece (616), the first travel limit piece (615) and the second travel limit piece (616) are respectively embedded in the first travel limit piece (501) and the second travel limit piece (616). The second female socket terminal (62) is formed with a third clamping arm (623) and a fourth clamping arm (624) which are spaced and can produce elastic deformation. The cross-sections of the third clamping arm (623) and the fourth clamping arm (624) are both arc-shaped. A spaced-apart third clamping arm (623) and a fourth clamping arm (624) are formed between the third clamping arm (623) and the fourth clamping arm (624) to correspond to the second jack (502) and to provide the first female socket terminal (62) with a spaced-apart third clamping arm (623) and a fourth clamping arm (624) ... The second contact portion (31) of the second male terminal (3) is inserted into the second conducting space (620), and the ends of the third clamping arm (623) and the fourth clamping arm (624) are further bent outward to form a third travel limit plate (625) and a fourth travel limit plate (626), and the third travel limit plate (625) and the fourth travel limit plate (626) are respectively embedded in the third travel limit groove (53) and the fourth travel limit groove (54), and can move in the third travel limit groove (53) and the fourth travel limit groove (54), respectively.

5. The high-speed differential signal connector according to claim 1, characterized in that: The upper and lower sides of the front end of the second metal shielding shell (7) are respectively formed with a first plate (711) and a second plate (721) which protrude horizontally forward and can generate elastic deformation and are used to increase the insertion and extraction force; the front end of the plastic seat (5) is provided with a groove (55) which passes through the upper and lower end surfaces; the first plate (711) and the second plate (721) respectively cover the upper and lower openings of the groove (55) to form the above-mentioned slot (50); the upper and lower surfaces of the first plate (711) and the second plate (721) are both formed with a first positioning convex bump (712) and a second positioning convex bump (722) which are concave from the outside to the inside; the front end of the insulating seat (1) is provided with a positioning step (13) which protrudes from the upper and lower end surfaces; the upper and lower inner sides of the positioning step (13) are respectively A first positioning buckle (111) and a second positioning buckle (121) are respectively formed thereon. When the insulating seat (1) is inserted into the corresponding slot (50), the positioning step (13) passes over the first positioning convex bump (712) and the second positioning convex bump (722), and the first positioning buckle (111) and the second positioning buckle (121) are respectively engaged and positioned with the rear sides of the first positioning convex bump (712) and the second positioning convex bump (722); the upper and lower sides of the front end of the first metal shielding shell (4) are respectively formed with a first elastic arm (411) and a second elastic arm (421) for increasing the insertion and extraction force, and the first elastic arm (411) and the second elastic arm (421) are respectively pressed and contacted with the inner wall of the first positioning convex bump (712) and the inner wall of the second positioning convex bump (722).

6. The high-speed differential signal connector according to claim 4 or 5, characterized in that: The female connector (200) further comprises a positioning seat (8) arranged on the plastic seat (5) and defining the first female terminal (61) and the second female terminal (62) to prevent the first female terminal (61) and the second female terminal (62) from being moved, a connecting seat (9) integrally injection-molded at the rear end of the plastic seat (5) and fixedly connected to the positioning seat (8), the second metal shielding shell (7) wraps and is fixed to the periphery of the positioning seat (8) and the connecting seat (9), the connecting seat (9) integrally wraps the first and second welding legs and the third and fourth conductors and the end of the second cable (400); the front ends of the first jack (501) and the second jack (502) are both provided with a guide hole (500) that is smaller inside and larger outside; The rear end of the plastic seat (5) is provided with a mounting groove (56), and a plurality of second positioning holes (561) are provided at the bottom of the mounting groove (56); the first female seat terminal (61) and the second female seat terminal (62) are both provided with a third positioning hole (60); the lower end of the positioning seat (8) is provided with a second limiting groove (81) and a third limiting groove (82) respectively adapted to the first female seat terminal (61) and the second female seat terminal (62), and the second limiting groove (81) and the third limiting groove (82) are both formed with Three positioning columns (80) protrude downward from the lower end of the positioning seat (8), the lower end of the positioning seat (8) is embedded in the installation groove (56), and the second limiting groove (81) and the third limiting groove (82) are respectively sleeved on the outer periphery of the upper ends of the first female terminal (61) and the second female terminal (62), and the three positioning columns (80) also pass through the third positioning holes (60) on the first female terminal (61) and the second female terminal (62) and then embed into the second positioning hole (561) of the plastic seat (5).

7. The high-speed differential signal connector according to claim 6, characterized in that: A gap is formed between the lower end surfaces of the first female socket terminal (61) and the second female socket terminal (62) and the mounting groove (56); a fourth limiting groove (83) is provided on one side of the upper end of the positioning seat (8); a first connecting portion (91) is integrally formed on the lower side of the connecting seat (9) and fills the gap and wraps around the three positioning columns (80); a first limiting block (92) is integrally formed on the upper side of the connecting seat (9) and is integrally fixed in the fourth limiting groove (83).

8. The high-speed differential signal connector according to any one of claims 1 to 3, characterized in that: The insulating seat (1) comprises: A first insulator (11) is integrally injection molded at the middle of the first male terminal (2) and the second male terminal (3); a first window (112) penetrating the upper and lower end surfaces is provided at the front of the first insulator (11); a first positioning hole (113) is formed on the inner wall of the first window (112); a revealing groove (14) communicating with the first window (112) is provided at the middle of the upper end surface of the first insulator (11); the first main body (23) and the second main body (33) are exposed as a whole in the first window (112) and the revealing groove (14); A second insulator (12) is integrally injection molded at the rear end of the first insulator (11) by secondary molding, and wraps around the first and second welding legs and the end of the first cable (300), and the front end of the second insulator (12) is also integrally integrated into and filled with the first window (112) and the exposure groove (14), and also covers the first main body (23) and the second main body (33), and the positioning block (122) formed at the front end of the second insulator (12) is also embedded in the first positioning hole (113); The upper and lower sides of the front end of the first insulator (11) are both provided with a first limiting groove (114), and the upper and lower sides of the front end of the first metal shielding shell (4) are both formed with a positioning piece (43) capable of generating elastic deformation, and the positioning piece (43) is embedded in the first limiting groove (114) and contacts the inner wall of the first limiting groove (114).

9. The high-speed differential signal connector according to claim 8, characterized in that: The first metal shielding shell (4) comprises an upper shell (41) and a lower shell (42) which are buckled and fixed to each other; the middle outer periphery of the upper shell (41) is bent to form a first buckle sheet (412); the middle of the first buckle sheet (412) is formed with a first card (413) protruding outward; the end of the first buckle sheet (412) is bent to form a first hook (414); the outer side of the insulating seat (1) is provided with a first slot body (116) adapted to the first buckle sheet (412) and a first slot body (116) connected to the first slot body (116) and adapted to the first hook (414). The hook groove (115) is provided with a first buckle piece (412), the first buckle piece (412) is nested in the first groove body (116), and the first hook (414) is engaged with the hook groove (115) for positioning; the middle outer periphery of the lower shell body (42) is bent to form a second buckle piece (422), and the middle part of the second buckle piece (422) is provided with a first locking hole (423), the second buckle piece (422) is attached to the outer periphery of the first buckle piece (412), and the first card (413) is pressed into the first locking hole (423), so that the second buckle piece (422) is locked with the first buckle piece (412).

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