Patent ID: 12230925

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring toFIG.1andFIG.2, a high-speed connector100in accordance with a first preferred embodiment of the present invention is shown. The high-speed connector100includes an insulating housing1and a terminal module2. The terminal module2is disposed in the insulating housing1.

Referring toFIG.3toFIG.5, the insulating housing1has a main portion11, and an accommodating space12formed in a rear end of an inside of the main portion11. The accommodating space12penetrates through a rear end of a bottom surface of the main portion11. Several portions of a front end of the inside of the main portion11are recessed inward to form a plurality of first terminal slots13. The plurality of the first terminal slots13are arranged in an upper row and a lower row. Several portions of an upper portion of the front end of the inside of the main portion11are recessed inward to form the upper row of the first terminal slots13penetrating through a bottom surface of the upper portion of the front end of the inside of the main portion11. Several portions of a lower portion of the front end of the inside of the main portion11are recessed inward to form the lower row of the first terminal slots13penetrating through a top surface of the lower portion of the front end of the inside of the main portion11. The plurality of the first terminal slots13are located in front of the accommodating space12. The plurality of the first terminal slots13are communicated with the accommodating space12.

A middle of a front end of the main portion11defines an insertion groove14. The insertion groove14longitudinally penetrates through the front end of the main portion11. The insertion groove14is positioned between the upper row of the first terminal slots13and the lower row of the first terminal slots13. The insertion groove14is communicated between the upper row of the first terminal slots13and the lower row of the first terminal slots13. A rear end of the main portion11defines an assembling groove15penetrating through a rear surface of the main portion11. The insertion groove14is located in front of the accommodating space12. The insertion groove14is communicated with the accommodating space12. The assembling groove15is located behind the accommodating space12. The assembling groove15is communicated with the accommodating space12.

Referring toFIG.3toFIG.6, the terminal module2is inserted into the accommodating space12of the insulating housing1from the assembling groove15of the insulating housing1. The terminal module2includes a first terminal assembly3, a second terminal assembly4, a third terminal assembly5and a fourth terminal assembly6which are mounted in the insulating housing1. In a concrete implementation, the terminal module2is without being limited to include the first terminal assembly3, the second terminal assembly4, the third terminal assembly5and the fourth terminal assembly6. The first terminal assembly3is corresponding to the second terminal assembly4. The third terminal assembly5is corresponding to the fourth terminal assembly6.

The first terminal assembly3and the second terminal assembly4are disposed opposite to each other. The first terminal assembly3and the second terminal assembly4form a QSFP (Quad Small Form-Factor Pluggable) terminal assembly. The third terminal assembly5and the fourth terminal assembly6are disposed opposite to each other. The third terminal assembly5and the fourth terminal assembly6form another QSFP terminal assembly. The third terminal assembly5and the fourth terminal assembly6are mounted between the first terminal assembly3and the second terminal assembly4. In the concrete implementation, the high-speed connector100includes the first terminal assembly3, the second terminal assembly4, the third terminal assembly5and the fourth terminal assembly6to form a QSFP-DD (Quad Small Form Factor Pluggable-Double Density) high-speed connector. The high-speed connector100is able to just include the first terminal assembly3and the second terminal assembly4to form the QSFP high-speed connector. The high-speed connector100is also able to include the third terminal assembly5and the fourth terminal assembly6to form the QSFP high-speed connector.

A top of the main portion11of the insulating housing1has at least one first through-hole111vertically penetrating through the top of the main portion11of the insulating housing1. In the first preferred embodiment, the top of the main portion11of the insulating housing1has two first through-holes111arranged along a transverse direction. The two first through-holes111vertically penetrate through the top of the main portion11. A corresponding mechanism of the first terminal assembly3is fastened in the at least one first through-hole111of the insulating housing1, so that the first terminal assembly3is fastened in the insulating housing1. A bottom of the main portion11of the insulating housing1has at least one second through-hole112vertically penetrating through the bottom of the main portion11. In the first preferred embodiment, the bottom of the main portion11of the insulating housing1has two second through-holes112arranged along the transverse direction. The two second through-holes112vertically penetrate through the bottom of the main portion11. A corresponding mechanism of the second terminal assembly4is fastened in the at least one second through-hole112of the insulating housing1, so that the second terminal assembly4is fastened in the insulating housing1.

Two upper portions of two opposite inner side surfaces of the rear end of the main portion11are recessed oppositely to form two first locating slots113. Two lower portions of the two opposite inner side surfaces of the rear end of the main portion11are recessed oppositely to form two second locating slots114. Two tops of two middle portions of the two opposite inner side surfaces of the rear end of the main portion11are recessed oppositely to form two third locating slots115. Two bottoms of the two middle portions of the two opposite inner side surfaces of the rear end of the main portion11are recessed oppositely to form two fourth locating slots116. Corresponding areas of the first terminal assembly3, the second terminal assembly4, the third terminal assembly5and the fourth terminal assembly6of the terminal module2are buckled to the two first locating slots113, the two second locating slots114, the two third locating slots115and the two fourth locating slots116of the insulating housing1, so that the terminal module2is fastened in the insulating housing1.

Referring toFIG.5,FIG.10,FIG.11,FIG.23andFIG.24, The two first locating slots113, the two third locating slots115, the two fourth locating slots116and the two second locating slots114are sequentially disposed along an up-down direction. The two lower portions of the two opposite inner side surfaces of the rear end of the main portion11extend towards each other to from two protruding ribs117. The two protruding ribs117are defined as two lower walls of the two second locating slots114. Two middles of two outer surfaces of two corresponding rear areas of the first terminal assembly3are recessed inward to form two first clamping slots351. Two middles of two outer surfaces of two corresponding rear areas of the third terminal assembly5are recessed inward to form two second clamping slots551. Two rear ends of the two protruding ribs117are clamped in the two first clamping slots351and the two second clamping slots551, so that the first terminal assembly3and the third terminal assembly5are fastened to the insulating housing1.

Referring toFIG.2toFIG.6, two sides of an inner surface of the top of the main portion11of insulating housing1extend downward to form two convex surfaces118. A quantity of the convex surfaces118of the insulating housing1is equal to a quantity of side positions of a top of the first terminal assembly3. A middle of the inner surface of the top of the main portion11of the insulating housing1has a concave surface119formed between the two convex surfaces118. The two convex surfaces118are corresponding to two side positions of the top of the first terminal assembly3. The concave surface119is corresponding to a middle position of the top of the first terminal assembly3.

At least one portion of the middle of the inner surface of the top of the main portion11of the insulating housing1is recessed inward to form at least one sliding groove16. The at least one first through-hole111is disposed in front of the at least one sliding groove16. The at least one sliding groove16extends longitudinally. The at least one first through-hole111is longitudinally aligned with the at least one sliding groove16. A rear end of the at least one sliding groove16is communicated with the assembling groove15. A front end of the at least one sliding groove16is communicated with the at least one first through-hole111. An inner surface of a top wall of the at least one sliding groove16has an inclining zone161, a buffering zone162and a stopping zone163longitudinally arranged in sequence. A rear end of the inner surface of the top wall of the at least one sliding groove16slantwise extends frontward and downward to form the inclining zone161. A front end of the inclining zone161of the at least one sliding groove16extends frontward to form the buffering zone162. A front end of the buffering zone162of the at least one sliding groove16protrudes downward, and then extends frontward and towards the at least one first through-hole111to form the stopping zone163. A top surface of the inclining zone161of the at least one sliding groove16is an inclined plane. A top surface of the buffering zone162of the at least one sliding groove16is a flat plane. A top surface of the stopping zone163of the at least one sliding groove16is another flat plane. The top surface of the stopping zone163and the top surface of the buffering zone162of the at least one sliding groove16form a segment difference, so that a horizontal level of the top surface of the stopping zone163of the at least one sliding groove16is lower than a horizontal level of the top surface of the buffering zone162of the at least one sliding groove16. The concave surface119is disposed among the at least one sliding groove16and the two convex surfaces118.

In the first preferred embodiment, two sides of the middle of the inner surface of the top of the main portion11of the insulating housing1are recessed inward to form two sliding grooves16. At least one corresponding section of a top of the terminal module2passes through the at least one sliding groove16, and then the at least one corresponding section of the top of the terminal module2is fastened in the at least one first through-hole111of the insulating housing1, so that the terminal module2is fastened in the insulating housing1. Specifically, two corresponding sections of the top of the terminal module2pass through the two sliding grooves16, and the two corresponding sections of the top of the terminal module2are fastened in the two first through-holes111of the insulating housing1, so that the terminal module2is fastened in the insulating housing1.

Each first through-hole111is disposed in front of one sliding groove16. Each sliding groove16extends longitudinally. Each first through-hole111is longitudinally aligned with the one sliding groove16. The rear end of each sliding groove16is communicated with the assembling groove15. The front end of each sliding groove16is communicated with one first through-hole111. The inner surface of the top wall of each sliding groove16has the inclining zone161, the buffering zone162and the stopping zone163longitudinally arranged in sequence. The rear end of the inner surface of the top wall of each sliding groove16slantwise extends frontward and downward to form the inclining zone161. The front end of the inclining zone161of each sliding groove16extends frontward to form the buffering zone162. The front end of the buffering zone162of each sliding groove16protrudes downward, and then extends frontward and towards the one first through-hole111to form the stopping zone163. The top surface of the inclining zone161of each sliding groove16is the inclined plane. The top surface of the buffering zone162of each sliding groove16is the flat plane. The top surface of the stopping zone163of each sliding groove16is another flat plane. The top surface of the stopping zone163and the top surface of the buffering zone162of each sliding groove16form the segment difference, so that the horizontal level of the top surface of the stopping zone163of each sliding groove16is lower than the horizontal level of the top surface of the buffering zone162of each sliding groove16. The concave surface119is disposed among the two sliding grooves16and the two convex surfaces118.

When the terminal module2is inserted into the accommodating space12from the assembling groove15, each corresponding section of the top of the terminal module2enters the buffering zone162along the inclining zone161of the one sliding groove16, each corresponding section of the top of the terminal module2slides along the buffering zone162of the one sliding groove16, and then each corresponding section of the top of the terminal module2passes through the stopping zone163of the one sliding groove16. Finally, each corresponding section of the top of the terminal module2is buckled to the one first through-hole111. The two inclining zones161of the two sliding grooves16bring conveniences for the two corresponding sections of the top of the terminal module2to enter the two sliding grooves16. The two inclining zones161of the two sliding grooves16prevent the two corresponding sections of the top of the terminal module2bruising. The two stopping zones163of the two sliding grooves16are used for abutting against the two corresponding sections of the top of the terminal module2to prevent the terminal module2from sliding.

Referring toFIG.2,FIG.3,FIG.4,FIG.5,FIG.6,FIG.10andFIG.18, two sides of a middle of the top of the main portion11form a plurality of first penetrating grooves17arranged along the transverse direction. Each first penetrating groove17penetrates through the top of the main portion11and extends longitudinally. The plurality of the first penetrating grooves17are used for an electrical regulation, so that the high-speed connector100has a high-frequency signal stability. Positions of the plurality of the first penetrating grooves17are corresponding to upper positions of terminals205of the top of the terminal module2. Two sides of a front end of the bottom of the main portion11form a plurality of second penetrating grooves18arranged along the transverse direction. Each second penetrating groove18penetrates through the bottom of the main portion11and extends longitudinally. The plurality of the second penetrating grooves18are used for the electrical regulation, so that the high-speed connector100has the high-frequency signal stability. Positions of the plurality of the second penetrating grooves18are corresponding to lower positions of the terminals205of a bottom of the terminal module2.

Referring toFIG.8toFIG.11, the first terminal assembly3includes a plurality of first terminals31, a first base body32, a first metal block33, a first dielectric structure34and a first holding element35. The plurality of the first terminals31are fastened to the first base body32. The plurality of the first terminals31are partially surrounded by the first base body32. Middles of the plurality of the first terminals31are surrounded by the first base body32. The first metal block33is disposed in the first base body32, and the first metal block33is positioned under the plurality of the first terminals31. The first dielectric structure34is disposed to rear ends of the plurality of the first terminals31. The rear ends of the plurality of the first terminals31are surrounded by the first dielectric structure34. The first dielectric structure34is used for adjusting a dielectric coefficient of a peripheral structure of each first terminal31to improve a crosstalk interference of the high-speed connector100. Lower portions of the plurality of the first terminals31are surrounded by the first holding element35.

Each first terminal31has a first fastening portion311, a first stepping portion312, a first contacting portion313connected to a front end of the first fastening portion311, a first extending portion314, a first bending portion315, and a first soldering portion316connected to a rear end of the first fastening portion311. The first fastening portions311of the plurality of the first terminals31which are located at two sides of the first base body32of two sides of the first terminal assembly3are corresponding to the positions of the plurality of the first penetrating grooves17which are formed at the two sides of the middle of the top of the main portion11of the insulating housing1. The front end of the first fastening portion311slantwise extends frontward and downward to form the first stepping portion312. A front end of the first stepping portion312extends frontward and then is arched downward to form the first contacting portion313. The first stepping portions312and rear ends of the first contacting portions313of the first terminals31of the two sides of the first terminal assembly3are exposed to two sides of a front end of the first base body32. A front end of the first contacting portion313of each first terminal31projects beyond a front surface of the first base body32. The first contacting portions313of the plurality of the first terminals31are disposed in the upper row of the first terminal slots13. Bottom surfaces of the first contacting portions313of the plurality of the first terminals31are exposed out of the upper row of the first terminal slots13, and the bottom surfaces of the first contacting portions313of the plurality of the first terminals31project into the insertion groove14.

The rear end of the first fastening portion311slantwise extends rearward and downward to form the first extending portion314. A rear end of the first extending portion314is bent downward to form the first bending portion315. A bottom end of the first bending portion315is bent rearward to form the first soldering portion316. The rear end of the first fastening portion311, the first extending portion314, the first bending portion315and the first soldering portion316of each first terminal31project beyond a rear surface of the first base body32. The first dielectric structure34is fastened to the first extending portions314of the plurality of the first terminals31. Tail ends of the first bending portions315of the plurality of the first terminals31are surrounded by the first holding element35. Two opposite sides of the front end of each first fastening portion311, two opposite sides of the rear end of each first fastening portion311and two opposite sides of the rear end of each first contacting portion313are recessed inward to form a plurality of first lacking grooves319. Corresponding formations of the first base body32are inserted into the first lacking grooves319of the plurality of the first terminals31.

The plurality of the first terminals31include a plurality of first grounding terminals317and a plurality of first differential signal terminals318. Each two adjacent first differential signal terminals318are located between two first grounding terminals317. In the first preferred embodiment, the plurality of the first terminals31includes seven first grounding terminals317and twelve first differential signal terminals318. Each first differential signal terminal318is used for transmitting a signal. The first fastening portion311of one first grounding terminal317and the first fastening portions311of four first differential signal terminals318are surrounded by a middle of the first base body32.

The front ends of the first fastening portions311, the first stepping portions312and the rear ends of the first contacting portions313of the first terminals31of a middle of the first terminal assembly3are surrounded by the middle of the first base body32. The first base body32has a first surrounding portion320, at least one first protruding block321, two first protruding portions322, a first fastening groove323, a plurality of first openings324, a plurality of first locking hooks325, a first location hole326, a plurality of first restricting holes327and a plurality of first connecting portions328.

The first surrounding portion320is disposed to the middle of the first base body32, and the first surrounding portion320is connected between the front end of the first base body32and a rear end of the first base body32. The first fastening portion311of the one first grounding terminal317and the first fastening portions311of the four first differential signal terminals318are surrounded by the first surrounding portion320. The first surrounding portion320of the first base body32of the first terminal assembly3is corresponding to the concave surface119of the insulating housing1.

At least one portion of a rear end of a top surface of the first surrounding portion320of the first base body32protrudes upward to form the at least one first protruding block321. A quantity of the at least one first protruding block321of the first base body32is equal to a quantity of the at least one first through-hole111of the insulating housing1. The at least one first protruding block321passes through the at least one sliding groove16. The at least one first protruding block321is fastened in the at least one first through-hole111of the insulating housing1. In the first preferred embodiment, two sides of the rear end of the top surface of the first surrounding portion320of the first base body32protrude upward to form two first protruding blocks321. After each first protruding block321passes through the one sliding groove16, each first protruding block321is fastened in the one first through-hole111of the insulating housing1, so that the first terminal assembly3is fastened to the insulating housing1.

When the terminal module2is inserted into the accommodating space12from the assembling groove15, each first protruding block321of the first base body32of the terminal module2enters the buffering zone162along the inclining zone161of the one sliding groove16, each first protruding block321of the first base body32of the terminal module2slides along the buffering zone162of the one sliding groove16, and then each first protruding block321of the first base body32of the terminal module2passes through the stopping zone163of the one sliding groove16. Finally, each first protruding block321of the first base body32of the terminal module2is buckled to the one first through-hole111. The two inclining zones161of the two sliding grooves16bring the conveniences for the two first protruding blocks321of the first terminal assembly3of the terminal module2to enter the two sliding grooves16. The two inclining zones161of the two sliding grooves16prevent the two first protruding blocks321of the first terminal assembly3of the terminal module2bruising. The two stopping zones163of the two sliding grooves16are used for abutting against the two first protruding blocks321of the first terminal assembly3of the terminal module2to prevent the first terminal assembly3of the terminal module2from sliding.

In the first preferred embodiment, two opposite sides of the first base body32extend outward to form the two first protruding portions322. The two first protruding portions322of the first base body32are buckled in two front ends of the two first locating slots113of the insulating housing1, so that the first terminal assembly3is fastened to the insulating housing1. A middle of a bottom surface of the rear end of the first base body32is recessed inward to form the first fastening groove323. The first metal block33is disposed in the first fastening groove323of the first base body32. The first base body32has four first openings324. The front end of the first base body32has two first openings324, and the rear end of the first base body32has the other two first openings324. The two first openings324of the front end of the first base body32penetrate through two sides of a top surface and two sides of a bottom surface of the front end of the first base body32. Two tops of two sides of the first fastening groove323extend upward to form the other two first openings324penetrating through two sides of a top surface of the rear end of the first base body32.

The first openings324of the first base body32are formed to two sides of the first surrounding portion320. A front end of the first surrounding portion320is located between the two first openings324of the front end of the first base body32. A rear end of the first surrounding portion320is located between the other two first openings324of the front end of the first base body32. The first stepping portions312and the rear ends of the first contacting portions313of the plurality of the first grounding terminals317and the first differential signal terminals318of the two sides of the first terminal assembly3are exposed to the two first openings324of the front end of the first base body32. The first fastening portions311of the plurality of the first grounding terminals317and the first differential signal terminals318of the two sides of the first terminal assembly3are exposed to the other two first openings324of the rear end of the first base body32. The first fastening portions311of the plurality of the first grounding terminals317and the first differential signal terminals318of the two sides of the first terminal assembly3are exposed to the first fastening groove323from the other two first openings324of the first base body32. A quantity of the first openings324of the rear end of the first base body32of the first terminal assembly3is equal to a quantity of the convex surfaces118of insulating housing1. The first openings324of the rear end of the first base body32of the first terminal assembly3are corresponding to the convex surfaces118of the insulating housing1.

A middle of a bottom surface of the rear end of the first surrounding portion320of the first base body32extends downward to form a supporting block301. Several portions of the bottom surface of the rear end of the first surrounding portion320of the first base body32extend downward and then protrude outward to form the plurality of the first locking hooks325. The plurality of the first locking hooks325are used for fastening the first metal block33. A middle of a bottom surface of the supporting block301is recessed inward to form the first location hole326. A corresponding mechanism of the third terminal assembly5is fastened in the first location hole326, so that the third terminal assembly5is fastened with the first terminal assembly3. The plurality of the first restricting holes327penetrate through two sides of a top surface and two sides of a bottom surface of the first base body32. Corresponding structures of the first metal block33are disposed in the plurality of the first restricting holes327, so that the first metal block33is fastened to the first base body32.

An upper surface of the first base body32has the plurality of the first connecting portions328. The plurality of the first connecting portions328are longitudinally arranged in three rows. Each first connecting portion328is disposed between two adjacent first terminals31. The plurality of the first connecting portions328are used to simplify a mold manufacturing process. The plurality of the first connecting portions328are embedded into the plurality of the first lacking grooves319of the plurality of the first fastening portions311and the plurality of the first contacting portions313of the plurality of the first terminals31. A lower surface of the first base body32has a transverse row of second terminal slots329. Corresponding parts of the third terminal assembly5are disposed to the transverse row of the second terminal slots329. During an assembling process of the high-speed connector100, the transverse row of the second terminal slots329are used for preventing the corresponding parts of the third terminal assembly5from tilting.

The first metal block33is fastened in the first fastening groove323of the first base body32. The first metal block33is located under the plurality of the first terminals31. The first metal block33has a first main plate331, a first limiting hole332, a plurality of first locking holes333, a plurality of first contacting blocks335, a plurality of first slits336, a plurality of first separating grooves337, a plurality of first restricting portions338and a plurality of first contacting points339.

The first main plate331is received in the first fastening groove323. A middle of the first main plate331defines the first limiting hole332vertically penetrating through middles of a top surface and a bottom surface of the first main plate331. The first limiting hole332is positioned corresponding to the supporting block301of the first surrounding portion320. The supporting block301is limited in the first limiting hole332. A front and a rear of the first main plate331defines the plurality of the first locking holes333penetrating through the top surface and the bottom surface of the first main plate331. The first locking holes333of the front of the first main plate331are located in front of the first limiting hole332. The first locking holes333of the rear of the first main plate331are located behind the first limiting hole332. The plurality of the first locking hooks325of the first base body32pass through the plurality of the first locking holes333. The plurality of the first locking hooks325are buckled to side walls of the plurality of the first locking holes333. Bottoms of the plurality of the first locking hooks325are blocked by the bottom surface of the first main plate331.

Referring toFIG.7toFIG.12, several portions of two sides of the top surface of the first main plate331protrude upward and towards the plurality of the first terminals31to form the plurality of the first contacting blocks335. The plurality of the first contacting blocks335are spaced from one another. The first limiting hole332is located between the first contacting blocks335of the two sides of the top surface of the first main plate331. In the first preferred embodiment, each first contacting block335is rectangular. Each first contacting block335extends in a longitudinal direction. The plurality of the first contacting blocks335are in contact with the first fastening portions311of the first grounding terminals317of the first terminals31of the two sides of the first terminal assembly3to form a grounding structure90, so that a signal noise is able to be effectively absorbed and the signal noise is able to be effectively restrained for improving transmission quality of a high-frequency signal of the high-speed connector100.

The first main plate331has the plurality of the first slits336penetrating through the top surface and the bottom surface of the first main plate331. Each first slit336is formed in a bugle shape. A transverse width of a top of each first slit336is narrower than a transverse width of a bottom of each first slit336. Each first slit336has a first narrow aperture3361and a first wide aperture3362. The first narrow aperture3361is formed at the top surface of the first main plate331. The first wide aperture3362is formed at the bottom surface of the first main plate331. The first narrow aperture3361and the first wide aperture3362are used to improve an electromagnetic field crosstalk interference.

In the first preferred embodiment, each two first slits336are formed between two adjacent first contacting blocks335. Each first slit336extends in the longitudinal direction. Each two adjacent first differential signal terminals318form a first differential signal terminal pair. Each two first slits336formed between the two adjacent first contacting blocks335are aligned in the longitudinal direction. Each two first slits336which are formed between the two adjacent first contacting blocks335are aligned with a first interstice302between the two first fastening portions311of the two adjacent first differential signal terminals318of one first differential signal terminal pair along an up-down direction. In a concrete implementation, the high-speed connector100is without being limited to align each two first slits336which are formed between the two adjacent first contacting blocks335with the first interstice302between the two first fastening portions311of the two adjacent first differential signal terminals318of the one first differential signal terminal pair along the up-down direction.

Each first separating groove337is formed among the two adjacent first contacting blocks335and the first main plate331. Each first separating groove337is rectangular. The plurality of the first separating grooves337are corresponding to the first fastening portions311of the first differential signal terminals318of the two sides of the first terminal assembly3along a vertical direction. The first fastening portions311of the first differential signal terminals318of the two sides of the first terminal assembly3are received in the plurality of the first separating grooves337. The first fastening portions311of each two adjacent first differential signal terminals318of the two sides of the first terminal assembly3are received in one first separating groove337. Bottom walls of the plurality of the first separating grooves337are spaced from the first fastening portions311of the first differential signal terminals318of the two sides of the first terminal assembly3along the vertical direction, and several portions of the first main plate331are defined as the bottom walls of the plurality of the first separating grooves337, so the first main plate331keeps distances from the first fastening portions311of the first differential signal terminals318of the two sides of the first terminal assembly3along the vertical direction.

Several portions of two opposite side surfaces of the first metal block33protrude outward and then protrude upward to form the plurality of the first restricting portions338. A quantity of the first restricting portions338of the first metal block33is equal to a quantity of the first restricting holes327of the first base body32. The plurality of the first restricting portions338of the first metal block33are restricted in the plurality of the first restricting holes327of the first base body32, so the first metal block33is fastened in the first fastening groove323of the first base body32. Several portions of two middles of a front surface and a rear surface of the first main plate331protrude outward to form the plurality of the first contacting points339. The plurality of the first contacting points339of the first main plate331abut against a front inner wall and a rear inner wall of the first fastening groove323of the first base body32, so that the first metal block33is fastened to the first base body32.

In this first preferred embodiment, the first metal block33has four first locking holes333, six first contacting blocks335, eight first slits336, four first separating grooves337, four first restricting portions338and four first contacting points339.

Referring toFIG.13toFIG.15, the first dielectric structure34has two first covers341and a first fastening structure342. The two first covers341are disposed corresponding to each other. The first fastening structure342is disposed between the two first covers341. In one condition, structures of the two first covers341are the same. In another condition, the two first covers341are symmetrical. The two first covers341are disposed opposite to each other. The two first covers341and the first fastening structure342are buckled in a whole. The two first covers341are buckled by the first fastening structure342to form an entirety.

Each first cover341has a first extending foot3411, a first notch3412, a plurality of first attaching surfaces3413and a first interval3414. One side of each first cover341protrudes inward and perpendicular to each first cover341to form the first extending foot3411. The other side of each first cover341has the first notch3412penetrating through an outer surface, an inner surface and the other side surface of each first cover341. In the first preferred embodiment, each first cover341has two first extending feet3411, two first notches3412, the plurality of the first attaching surfaces3413and the first interval3414. Two portions of the one side of each first cover341protrude inward and perpendicular to each first cover341to form the two first extending feet3411. The other side of each first cover341has the two first notches3412penetrating through the outer surface, the inner surface and the other side surface of each first cover341. The two first extending feet3411of one first cover341are disposed corresponding to the two first notches3412of the other first cover341. The first extending feet3411of the two first covers341are buckled with the first notches3412of the two first covers341.

Two sides of the inner surface of each first cover341has the plurality of the first attaching surfaces3413protruded beyond the inner surface of each first cover341. The first attaching surfaces3413of the two first covers341clamp the first extending portions314of the first grounding terminals317of the two sides of the first terminal assembly3. The first attaching surfaces3413of the two first covers341are corresponding to the first extending portions314of the first grounding terminals317of the two sides of the first terminal assembly3. The first attaching surfaces3413of the one first cover341are corresponding to upper surfaces of the first extending portions314of the first grounding terminals317of the two sides of the first terminal assembly3, and the first attaching surfaces3413of the other first cover341are corresponding to lower surfaces of the first extending portions314of the first grounding terminals317of the two sides of the first terminal assembly3. The first attaching surfaces3413of the one first cover341contact with the upper surfaces of the first extending portions314of the first grounding terminals317of the two sides of the first terminal assembly3, and the first attaching surfaces3413of the other first cover341contact with the lower surfaces of the first extending portions314of the first grounding terminals317of the two sides of the first terminal assembly3.

The first attaching surfaces3413of the one first cover341face the first attaching surfaces3413of the other first cover341. The first attaching surfaces3413of the two first covers341are spaced to form the first interval3414among the first attaching surfaces3413of the two first covers341. The first extending portions314of the first differential signal terminals318of the two sides of the first terminal assembly3pass through the first interval3414. The upper surfaces and the lower surfaces of the first extending portions314of the first differential signal terminals318of the two sides of the first terminal assembly3are spaced from the two inner surfaces of the two first covers341to form two first gaps3415. The first interval3414and each first gap3415of the first dielectric structure34are used for adjusting the dielectric coefficient of the peripheral structure of each first terminal31to improve an electromagnetic characteristic and the crosstalk interference of the high-speed connector100.

A middle of the inner surface of each first cover341is recessed inward to from a first sunken portion3416. The first sunken portion3416is used for receiving the first fastening structure342. The first sunken portion3416of each first cover341has at least one first perforation3417penetrating through the inner surface and the outer surface of each first cover341. In the first preferred embodiment, the first sunken portion3416of each first cover341has two first perforations3417. The two first perforations3417penetrate through the two inner surfaces and the two outer surfaces of the two first covers341. Corresponding hooks of the first fastening structure342are disposed to the first perforations3417of the two first covers341, and the corresponding hooks of the first fastening structure342are buckled to the two outer surfaces of the two first covers341, so that the first fastening structure342is located between the two first covers341, and the first fastening structure342is fastened between the two first covers341.

Referring toFIG.8toFIG.15, each side of the first fastening structure342has at least one first buckling hook3421. In the first preferred embodiment, the first fastening structure342has four first buckling hooks3421. Each side of the first fastening structure342has two first buckling hooks3421. The two first buckling hooks3421of each side of the first fastening structure342oppositely extend towards the two first covers341, and then protrude outward to form the two first buckling hooks3421. A quantity of the first buckling hooks3421of the first fastening structure342is equal to a quantity of the first perforations3417of the two first covers341. The first buckling hooks3421of the first fastening structure342are buckled in the first perforations3417of the two first covers341, and the first buckling hooks3421of the first fastening structure342hook the two outer surfaces of the two first covers341, so that the first fastening structure342is located between the two first covers341, and the first fastening structure342is fastened between the two first covers341. The first extending portions314of the first terminals31of the middle of the first terminal assembly3longitudinally pass through a middle of the first fastening structure342.

Bottom ends of the plurality of the first terminals31are surrounded by the first holding element35. Two opposite side surfaces of the first holding element35are recessed inward to form the two first clamping slots351. The two rear ends of the two protruding ribs117of the insulating housing1are clamped in the two first clamping slots351of the first terminal assembly3, so that the first terminal assembly3is located to the insulating housing1, and the first terminal assembly3is fastened to the insulating housing1. Each first clamping slot351is shown as a horn shape, and a front of each first clamping slot351is wider than a rear of each first clamping slot351, so that the two protruding ribs117of the insulating housing1are buckled in the two first clamping slots351conveniently.

Referring toFIG.3toFIG.20, the second terminal assembly4is corresponding to the first terminal assembly3along the up-down direction. The second terminal assembly4is disposed under the first terminal assembly3. The second terminal assembly4includes a plurality of second terminals41, a second base body42and a second metal block43. The plurality of the second terminals41are fastened to the second base body42. The plurality of the second terminals41are partially surrounded by the second base body42. The second metal block43is disposed to the second base body42.

Each second terminal41has a second fastening portion411, a second stepping portion412, a second contacting portion413and a second soldering portion414. A front end of the second fastening portion411slantwise extends upward and frontward to form the second stepping portion412. A front end of the second stepping portion412extends frontward and then is arched upward to form the second contacting portion413. A rear end of the second fastening portion411is bent downward and then extends rearward to form the second soldering portion414. Two sides of the front end of the second fastening portion411, two sides of the rear end of the second fastening portion411and two sides of a rear end of the second contacting portion413are recessed inward to form a plurality of second lacking grooves417. Corresponding formations of the second base body42are engaged with the plurality of the second lacking grooves417of the second fastening portions411and the second contacting portions413of the plurality of the second terminals41by a plastic injection molding technology.

The second stepping portions412and the rear ends of the second contacting portions413of the second terminals41of two sides of the second terminal assembly4are exposed to two sides of a front end of the second base body42. Front ends of the second contacting portions413of the plurality of the second terminals41project beyond a front surface of the second base body42. The second contacting portions413of the plurality of the second terminals41are disposed in the lower row of the first terminal slots13. Top surfaces of the second contacting portions413of the plurality of the second terminals41are exposed out of the lower row of the first terminal slots13. The top surfaces of the second contacting portions413of the plurality of the second terminals41project into the insertion groove14. The second contacting portions413of the plurality of the second terminals41of the two sides of the second terminal assembly4are corresponding to the plurality of the second penetrating grooves18of the insulating housing1.

The plurality of the second terminals41include a plurality of second grounding terminals415and a plurality of second differential signal terminals416. In the first preferred embodiment, the plurality of the second terminals41includes seven second grounding terminals415and twelve second differential signal terminals416. Each two adjacent second differential signal terminals416are located between two second grounding terminals415. Each second differential signal terminal416is used for transmitting the signal. The second fastening portion411of one second grounding terminal415and the second fastening portions411of four second differential signal terminals416are surrounded by a middle of the second base body42.

The second fastening portions411, the second stepping portions412and the rear ends of the second contacting portions413of the second terminals41of a middle of the second terminal assembly4are surrounded by the middle of the second base body42. The second base body42has a second surrounding portion420, at least one second protruding block421, two second protruding portions422, a second fastening groove423, a plurality of second openings424, two second locking hooks425, a supporting portion426, two second restricting holes427, a plurality of second connecting portions428and a plurality of third terminal slots429. In the first preferred embodiment, the second base body42includes two second protruding blocks421.

The second surrounding portion420is disposed to the middle of the second base body42. The second surrounding portion420is connected between the front end of the second base body42and a rear end of the second base body42. The second fastening portion411of the one second grounding terminal415and the second fastening portions411of the four second differential signal terminals416are surrounded by the second surrounding portion420. A rear end of a bottom surface of the second surrounding portion420of the second base body42extends downward to form the at least one second protruding block421. In the first preferred embodiment, two sides of the rear end of the bottom surface of the second surrounding portion420of the second base body42extend downward to form the two second protruding blocks421. A quantity of the at least one second protruding block421of the second base body42is equal to a quantity of the at least one second through-hole112of the insulating housing1. The two second protruding blocks421are fastened in the two second through-holes112of the insulating housing1, so that the second terminal assembly4is located to the insulating housing1, and the second terminal assembly4is fastened to the insulating housing1.

In the first preferred embodiment, two opposite sides of the second base body42extend outward to form the two second protruding portions422. The two second protruding portions422are buckled in the two second locating slots114of the insulating housing1, so that the second terminal assembly4is located to the insulating housing1, and the second terminal assembly4is fastened to the insulating housing1. A middle of a top surface of the rear end of the second base body42is recessed downward to form the second fastening groove423. The second metal block43is disposed in the second fastening groove423of the second base body42. The second base body42has four second openings424formed to two sides of the second surrounding portion420. The front end of the second base body42has two second openings424arranged along the transverse direction, and the rear end of the second base body42has the other two second openings424arranged along the transverse direction. The two second openings424of the front end of the second base body42penetrate through two sides of a top surface and two sides of a bottom surface of the front end of the second base body42. Two bottoms of two sides of the second fastening groove423extend downward to form the other two second openings424penetrating through two sides of a bottom surface of the rear end of the second base body42.

A front end of the second surrounding portion420is located between the two second openings424of the front end of the second base body42. A rear end of the second surrounding portion420is located between the other two second openings424of the rear end of the second base body42. The second stepping portions412and the rear ends of the second contacting portions413of the plurality of the second grounding terminals415and the second differential signal terminals416of the two sides of the second terminal assembly4are exposed to the two second openings424of the front end of the second base body42. The second fastening portions411of the plurality of the second grounding terminals415and the second differential signal terminals416of the two sides of the second terminal assembly4are exposed to the other two second openings424of the rear end of the second base body42. The second fastening portions411of the plurality of the second grounding terminals415and the second differential signal terminals416of the two sides of the second terminal assembly4are exposed to the second fastening groove423from the other two second openings424of the rear end of the second base body42.

A middle of a top surface of the rear end of the second surrounding portion420is recessed inward to form a first buckling groove303. Two sides of the top surface of the rear end of the second surrounding portion420extend upward and then protrude outward to form the two second locking hooks425. The two second locking hooks425are located to the first buckling groove303. The two second locking hooks425are used for fastening the second metal block43. A rear end wall of the second fastening groove423of the second base body42is formed as the supporting portion426. In this first preferred embodiment, a corresponding mechanism of the fourth terminal assembly6abuts against the supporting portion426of the second base body42.

The two second restricting holes427penetrate through two sides of a top surface and two sides of a bottom surface of the second base body42. Two second restricting portions437of the second metal block43are restricted in the two second restricting holes427, so that the second metal block43is fastened to the second base body42.

A lower surface of the second base body42has the plurality of the second connecting portions428. Each second connecting portion428is disposed between two adjacent second terminals41. Each second connecting portion428is used to simplify the mold manufacturing process. The plurality of the second connecting portions428are longitudinally arranged in three rows. In the first preferred embodiment, the plurality of the second connecting portions428are embedded in the plurality of the second lacking grooves417of the second fastening portions411and the second contacting portions413of the plurality of the second terminals41. An upper surface of the second base body42has a transverse row of third terminal slots429. Front ends of a plurality of fourth terminals61of the fourth terminal assembly6are disposed to the transverse row of the third terminal slots429. During the assembling process of the high-speed connector100, the transverse row of the third terminal slots429are used for preventing the plurality of the fourth terminals61of the fourth terminal assembly6from tilting.

The second metal block43is fastened in the second fastening groove423of the second base body42. The plurality of the second terminals41are disposed under the second metal block43. The second metal block43has a second main plate431, two second locking holes432, a plurality of second contacting blocks434, a plurality of second slits435, a plurality of second separating grooves436, the two second restricting portions437and a plurality of second contacting points438.

The second main plate431is received in the second fastening groove423. A middle of the second main plate431defines the two second locking holes432vertically penetrating through a top surface and a bottom surface of the second main plate431. The two second locking holes432are arranged along the transverse direction. The two second locking hooks425of the second base body42pass through the two second locking holes432. The two second locking hooks425are buckled to side walls of the two second locking holes432. Tops of the two second locking hooks425are blocked by the top surface of the second main plate431.

In this first preferred embodiment, a width of each side of the second main plate431is greater than a width of the middle of the second main plate431. Several portions of two sides of the bottom surface of the second main plate431protrude downward and towards the plurality of the second terminals41to form the plurality of the second contacting blocks434. The plurality of the second contacting blocks434are spaced from one another. The two second locking holes432are located between the second contacting blocks434of the two sides of the bottom surface of the second main plate431. In the first preferred embodiment, each second contacting block434is rectangular. Each second contacting block434extends in the longitudinal direction. The plurality of the second contacting blocks434are in contact with the second fastening portions411of the second grounding terminals415of the second terminals41of the two sides of the second terminal assembly4to form the grounding structure90, so that the signal noise is able to be effectively absorbed and the signal noise is able to be effectively restrained for improving the transmission quality of the high-frequency signal of the high-speed connector100.

The second main plate431has the plurality of the second slits435penetrating through two sides of the top surface and the two sides of the bottom surface of the second main plate431. A transverse width of a bottom of each second slit435is narrower than a transverse width of a top of each second slit435. Each second slit435has a second narrow aperture4351and a second wide aperture4352. The second narrow aperture4351is formed at the bottom surface of the second main plate431. The second wide aperture4352is formed at the top surface of the second main plate431. The second narrow aperture4351and the second wide aperture4352are used to improve the electromagnetic field crosstalk interference.

In this first preferred embodiment, each second slit435is formed between two adjacent second contacting blocks434. Each second slit435extends along the longitudinal direction. Each two adjacent second differential signal terminals416form a second differential signal terminal pair. Each second slit435which is formed between the two adjacent second contacting blocks434is aligned with a second interstice304between the two second fastening portions411of the two adjacent second differential signal terminals416of one second differential signal terminal pair along the up-down direction. In the concrete implementation, the high-speed connector100is without being limited to align each second slit435which is formed between the two adjacent second contacting blocks434with the second interstice304between the two second fastening portions411of the two adjacent second differential signal terminals416of the one second differential signal terminal pair along the up-down direction.

Each second separating groove436is formed among the two adjacent second contacting blocks434and the second main plate431. Each second separating groove436is rectangular. The plurality of the second separating grooves436are corresponding to the second fastening portions411of the second differential signal terminals416of the two sides of the second terminal assembly4along the vertical direction. The second fastening portions411of the second differential signal terminals416of the two sides of the second terminal assembly4are received in the plurality of the second separating grooves436. Each two adjacent second differential signal terminals416are received in one second separating groove436. Top walls of the plurality of the second separating grooves436are spaced from the second fastening portions411of the second differential signal terminals416of the two sides of the second terminal assembly4along the vertical direction, and several portions of the second main plate431are defined as the top walls of the plurality of the second separating grooves436, so the second main plate431keeps distances from the second fastening portions411of the second differential signal terminals416of the two sides of the second terminal assembly4along the vertical direction.

Two opposite side surfaces of the second metal block43protrude outward and then protrude downward to form the two second restricting portions437. A quantity of the second restricting portions437of the second metal block43is equal to a quantity of the second restricting holes427of the second base body42. The plurality of the second restricting portions437of the second metal block43are restricted in the plurality of the second restricting holes427of the second base body42, so the second metal block43is fastened in the second fastening groove423of the second base body42. Several portions of two middles of the front surface and the rear surface of the second main plate431protrude outward to form the plurality of the second contacting points438. The plurality of the second contacting points438of the second main plate431abut against a front inner wall and a rear inner wall of the first buckling groove303of the second surrounding portion420of the second base body42, so that the second metal block43is fastened to the second base body42.

In this first preferred embodiment, the second metal block43has the two second locking holes432, six second contacting blocks434, four second slits435, four second separating grooves436, the two second restricting portions437and four second contacting points438.

Referring toFIG.3toFIG.28, the third terminal assembly5includes a plurality of third terminals51, a third base body52, a third metal block53, a second dielectric structure54, a second holding element55and a first laminar structure56.

The plurality of the third terminals51are disposed between the first laminar structure56and the third metal block53. The plurality of the third terminals51are fastened to the third base body52. The plurality of the third terminals51are partially surrounded by the third base body52. The third metal block53is disposed in the third base body52, and the third metal block53is disposed under the plurality of the third terminals51.

Rear ends of the plurality of the third terminals51are surrounded by the second dielectric structure54. The second dielectric structure54is used for adjusting a dielectric coefficient of a peripheral structure of each third terminal51to improve the crosstalk interference of the high-speed connector100. Lower portions of the plurality of the third terminals51are surrounded by the second holding element55. The first laminar structure56is disposed in the third base body52, and the first laminar structure56is disposed on the plurality of the third terminals51. The first laminar structure56is opposite to the third metal block53. The first laminar structure56is used for adjusting the dielectric coefficient of the peripheral structure of each third terminal51to improve the crosstalk interference of the high-speed connector100. A position of the first laminar structure56is corresponding to a position of the rear end of the first base body32. The first laminar structure56is mounted under the rear end of the first base body32.

Each third terminal51has a third fastening portion511, a third contacting portion512, a second extending portion513, a second bending portion514and a third soldering portion515. A front end of the third fastening portion511extends frontward, and then is arched downward to form the third contacting portion512. A rear end of the third fastening portion511slantwise extends rearward and downward to form the second extending portion513. A rear end of the second extending portion513is bent downward to form the second bending portion514. A tail end of the second bending portion514is bent rearward to form the third soldering portion515. The third fastening portions511of the plurality of the third terminals51are fastened to the third base body52. The third contacting portions512of the plurality of the third terminals51project beyond a front surface of the third base body52. The third contacting portions512of the plurality of the third terminals51are disposed in the plurality of the second terminal slots329of the first terminal assembly3.

During the assembling process of the high-speed connector100, the plurality of the second terminal slots329are used for preventing the third contacting portions512of the third terminal assembly5from tilting. The second extending portions513of the plurality of the third terminals51project beyond a rear surface of the third base body52. The second dielectric structure54is fastened to the second extending portions513of the plurality of the third terminals51. Tail ends of the plurality of the second bending portions514of the plurality of the third terminals51are surrounded by the second holding element55. Two opposite sides of the front end of each third fastening portion511, two opposite sides of the rear end of each third fastening portion511and two opposite sides of each second bending portion514are recessed inward to form a plurality of third lacking grooves518. Corresponding formations of the third base body52are embedded into the plurality of the third lacking grooves518of the third fastening portions511and the second bending portions514of the plurality of the third terminals51.

The plurality of the third terminals51include a plurality of third grounding terminals516and a plurality of third differential signal terminals517. Each two adjacent third differential signal terminals517are disposed between two third grounding terminals516. In the first preferred embodiment, the plurality of the third terminals51include seven third grounding terminals516and twelve third differential signal terminals517. Each third differential signal terminal517is used for transmitting the signal. The third fastening portion511of one third grounding terminal516and the third fastening portions511of four third differential signal terminals517are surrounded by a middle of the third base body52.

The third base body52has a third surrounding portion520, a first locating pillar521, two third protruding portions522, a third fastening groove523, two third openings524, two third locking hooks525, a second location hole526, two third restricting holes527and a plurality of third connecting portions528. The third surrounding portion520is disposed at the middle of the third base body52, and the third surrounding portion520is connected between a front end of the third base body52and a rear end of the third base body52. The third fastening portion511of the one third grounding terminal516and the third fastening portions511of the four third differential signal terminals517are surrounded by the third surrounding portion520. A front end of a top surface of the third surrounding portion520of the third base body52extends upward to form the first locating pillar521. The first locating pillar521is fastened in the first location hole326of the first base body32of the first terminal assembly3, so that the third terminal assembly5is fastened to the first terminal assembly3.

In the first preferred embodiment, two opposite sides of the third base body52extend outward to form the two third protruding portions522. The two third protruding portions522are buckled in the two third locating slots115of the insulating housing1, so that the third terminal assembly5is fastened to the insulating housing1. A middle of a bottom surface of the third base body52is recessed inward to form the third fastening groove523. A middle of a top surface of the third base body52is recessed inward to form a first locating groove501. The third metal block53is disposed in the third fastening groove523of the third base body52. The first laminar structure56is disposed in the first locating groove501. Two tops of two sides of the third fastening groove523extend upward to two sides of the first locating groove501to form the two third openings524. The two third openings524are formed to two sides of the third surrounding portion520. Top surfaces of the third fastening portions511of the plurality of the third grounding terminals516and the third differential signal terminals517of the third terminal assembly5are exposed to the first locating groove501. The third fastening portions511of the plurality of the third grounding terminals516and the third differential signal terminals517of two sides of the third terminal assembly5are exposed to the two third openings524of the third base body52. Bottom surfaces of the third fastening portions511of the plurality of the third grounding terminals516and the third differential signal terminals517of the two sides of the third terminal assembly5are exposed to the third fastening groove523from the two third openings524of the third base body52.

A middle of the third fastening groove523of the third base body52transversely penetrate through a middle of a bottom surface of the third surrounding portion520to form a second buckling groove502. Two sides of a bottom of the third surrounding portion520extend downward and then protrude outward to form the two third locking hooks525. The two third locking hooks525are located to the middle of the third fastening groove523. The two third locking hooks525are located to the second buckling groove502. The two third locking hooks525are used for fastening the third metal block53. A rear end of the bottom surface of the third surrounding portion520is recessed inward to form the second location hole526. A corresponding structure of the fourth terminal assembly6is fastened in the second location hole526, so that the fourth terminal assembly6is fastened to the third terminal assembly5.

The two opposite sides of the third base body52define the two third restricting holes527penetrating through the top surface and the bottom surface of the third base body52. Two third restricting portions537of the third metal block53are disposed in the two third restricting holes527, so that the third metal block53is fastened to the third base body52. An upper surface of the third base body52and an upper surface of the second holding element55have the plurality of the third connecting portions528. The plurality of the third connecting portions528are longitudinally arranged in three rows. Each third terminal51is disposed between two adjacent third connecting portions528. Each third connecting portion528is used to simplify the mold manufacturing process. In the first preferred embodiment, the plurality of the third connecting portions528are embedded into the third lacking grooves518of the third fastening portions511and the second bending portions514of the plurality of the third terminals51.

The third metal block53is fastened in the third fastening groove523of the third base body52. The third metal block53is positioned under the plurality of the third terminals51. The third metal block53has a third main plate531, two third locking holes532, a plurality of third contacting blocks534, a plurality of third slits535, a plurality of third separating grooves536, the two third restricting portions537and a plurality of third contacting points538.

The third main plate531is received in the third fastening groove523. A middle of the third main plate531defines the two third locking holes532vertically penetrating through a top surface and a bottom surface of the third main plate531. The two third locking holes532are arranged along the transverse direction. The two third locking hooks525of the third base body52pass through the two third locking holes532. The two third locking hooks525are buckled to side walls of the two third locking holes532. Bottoms of the two third locking hooks525are blocked by the bottom surface of the third main plate531.

In this first preferred embodiment, a width of each side of the third main plate531is greater than a width of the middle of the third main plate531. Several portions of two sides of the top surface of the third main plate531protrude upward and towards the plurality of the third terminals51to form the plurality of the third contacting blocks534. The plurality of the third contacting blocks534are spaced from one another. The two third locking holes532are located between the third contacting blocks534of the two sides of the top surface of the third main plate531. In the first preferred embodiment, each third contacting block534is rectangular. Each third contacting block534extends in the longitudinal direction. The plurality of the third contacting blocks534are in contact with the bottom surfaces of the third fastening portions511of the plurality of the third grounding terminals516of the third terminals51of the two sides of the third terminal assembly5to form the grounding structure90, so that the signal noise is able to be effectively absorbed and the signal noise is able to be effectively restrained for improving the transmission quality of the high-frequency signal of the high-speed connector100.

The third main plate531has the plurality of the third slits535penetrating through the two sides of the top surface and two sides of the bottom surface of the third main plate531. A transverse width of a top of each third slit535is narrower than a transverse width of a bottom of each third slit535. Each third slit535has a third narrow aperture5351and a third wide aperture5352. The third narrow aperture5351is formed at the top surface of the third main plate531. The third wide aperture5352is formed at the bottom surface of the third main plate531. The third narrow aperture5351and the third wide aperture5352are used to improve the electromagnetic field crosstalk interference.

In this first preferred embodiment, each third slit535is formed between two adjacent third contacting blocks534. Each third slit535extends along the longitudinal direction. Each two adjacent third differential signal terminals517form a third differential signal terminal pair. Each third slit535which is formed between the two adjacent third contacting blocks534is aligned with a third interstice503between the two third fastening portions511of the two adjacent third differential signal terminals517of one third differential signal terminal pair along the up-down direction. In the concrete implementation, the high-speed connector100is without being limited to align each third slit535which is formed between the two adjacent third contacting blocks534with the third interstice503between the two third fastening portions511of the two adjacent third differential signal terminals517of the one third differential signal terminal pair along the up-down direction.

Each third separating groove536is formed among the two adjacent third contacting blocks534and the third main plate531. Each third separating groove536is rectangular. The plurality of the third separating grooves536are corresponding to the third fastening portions511of the third differential signal terminals517of the two sides of the third terminal assembly5along the vertical direction. The third fastening portions511of the third differential signal terminals517of the two sides of the third terminal assembly5are received in the plurality of the third separating grooves536. The third fastening portions511of each two adjacent third differential signal terminals517of the two sides of the third terminal assembly5are received in one third separating groove536. Bottom walls of the plurality of the third separating grooves536are spaced from the third fastening portions511of the third differential signal terminals517of the two sides of the third terminal assembly5along the vertical direction, and several portions of the third main plate531are defined as the bottom walls of the plurality of the third separating grooves536, so the third main plate531keeps distances from the third fastening portions511of the third differential signal terminals517of the two sides of the third terminal assembly5along the vertical direction.

Two opposite side surfaces of the third metal block53protrude outward and then protrude upward to form the two third restricting portions537. A quantity of the third restricting portions537of the third metal block53is equal to a quantity of the third restricting holes527of the third base body52. The two third restricting portions537of the third metal block53are restricted in the two third restricting holes527of the third base body52, so the third metal block53is fastened in the third fastening groove523of the third base body52. Several portions of two middles of a front surface and a rear surface of the third main plate531protrude outward to form the plurality of the third contacting points538. The plurality of the third contacting points538of the third main plate531abut against a front inner wall and a rear inner wall of the second buckling groove502of the third surrounding portion520of the third base body52, so that the third metal block53is fastened to the third base body52.

In this first preferred embodiment, the third metal block53has the two third locking holes532, six third contacting blocks534, four third slits535, four third separating grooves536, the two third restricting portions537and four third contacting points538.

Referring toFIG.26toFIG.28, the second dielectric structure54includes two second covers541and a second fastening structure542. In one condition, structures of the two second covers541are the same. In another condition, the two second covers541are symmetrical. The two second covers541are disposed opposite to each other. The second fastening structure542is disposed between the two second covers541. Two sides of the second fastening structure542penetrate through the two second covers541. The two second covers541and the second fastening structure542are buckled in a whole. The two second covers541are buckled by the second fastening structure542to form another entirety.

Each second cover541has a second extending foot5411, a second notch5412, a plurality of second attaching surfaces5413and a second interval5414. One side of each second cover541has the second notch5412penetrating through an outer surface, an inner surface and one side surface of each second cover541. The other side of each second cover541protrudes inward and perpendicular to each second cover541to form the second extending foot5411. Each second extending foot5411is disposed corresponding to one second notch5412. The two second extending feet5411of the two second covers541are buckled with the two second notches5412of the two second covers541.

Two sides of the inner surface of each second cover541has the plurality of the second attaching surfaces5413protruded beyond the inner surface of each second cover541. The second attaching surfaces5413of one second cover541face the second attaching surfaces5413of the other second cover541. The second attaching surfaces5413of the two second covers541are spaced to form the second interval5414. The second extending portions513of the plurality of the third terminals51pass through the second interval5414. The second attaching surfaces5413of the two second covers541are corresponding to the second extending portions513of the third grounding terminals516of the two sides of the third terminal assembly5. The second attaching surfaces5413of the two second covers541clamp the second extending portions513of the third grounding terminals516of the two sides of the third terminal assembly5. The second attaching surfaces5413of the one second cover541are corresponding to upper surfaces of the second extending portions513of the third grounding terminals516of the two sides of the third terminal assembly5, and the second attaching surfaces5413of the other second cover541are corresponding to lower surfaces of the second extending portions513of the third grounding terminals516of the two sides of the third terminal assembly5. The second attaching surfaces5413of the one second cover541contact with the upper surfaces of the second extending portions513of the third grounding terminals516of the two sides of the third terminal assembly5, and the second attaching surfaces5413of the other second cover541contact with the lower surfaces of the second extending portions513of the third grounding terminals516of the two sides of the third terminal assembly5.

The upper surface and the lower surface of the second extending portion513of each third differential signal terminal517of the two sides of the third terminal assembly5are spaced from the two inner surfaces of the two second covers541to form two second gaps5415. A plurality of the second gaps5415are formed among the third terminal assembly5and the two inner surfaces of the two second covers541. The second interval5414and each second gap5415of the second dielectric structure54are used for adjusting the dielectric coefficient of the peripheral structure of each third terminal51to improve the electromagnetic characteristic and the crosstalk interference of the high-speed connector100.

A middle of the inner surface of each second cover541is recessed inward to from a second sunken portion5416. The second sunken portion5416is used for receiving the second fastening structure542. One side of the second sunken portion5416of each second cover541has a second perforation5417penetrating through the inner surface and the outer surface of each second cover541. Corresponding hooks of the second fastening structure542are disposed to the second perforations5417of the two second covers541, and the corresponding hooks of the second fastening structure542are buckled to the two outer surfaces of the two second covers541, so that the second fastening structure542is fastened between the two second covers541.

One side of the second fastening structure542has a second buckling hook5421. In the first preferred embodiment, two opposite sides of the second fastening structure542extend oppositely and then protrude oppositely to form two second buckling hooks5421. A quantity of the second buckling hooks5421of the second fastening structure542is equal to a quantity of the second perforations5417of the two second covers541. The second buckling hooks5421of the second fastening structure542are buckled in the second perforations5417of the two second covers541, and the second buckling hooks5421of the second fastening structure542hook the two outer surfaces of the two second covers541, so that the second fastening structure542is fastened between the two second covers541. The second extending portions513of the third terminals51of a middle of the third terminal assembly5longitudinally pass through a middle of the second fastening structure542.

Referring toFIG.3toFIG.24, bottom ends of the plurality of the third terminals51are surrounded by the second holding element55. The tail ends of the plurality of the second bending portions514of the plurality of the third terminals51are surrounded by the second holding element55. Two opposite side surfaces of the second holding element55are recessed inward to form the two second clamping slots551. The two rear ends of the two protruding ribs117of the insulating housing1are clamped in the two second clamping slots551of the third terminal assembly5, so that the third terminal assembly5is fastened to the insulating housing1. Each second clamping slot551is shown as the horn shape, and a rear end of each second clamping slot551is narrower than a front end of each second clamping slot551, so that the two protruding ribs117of the insulating housing1are buckled in the two second clamping slots551conveniently.

When the terminal module2is assembled, the second holding element55is disposed in front of the first holding element35, and the two second clamping slots551of the second holding element55are disposed in front of the two first clamping slots351of the first holding element35. The two second clamping slots551of the second holding element55and the two first clamping slots351of the first holding element35are aligned along the longitudinal direction. Two rear ends of the two second clamping slots551of the second holding element55are communicated with two front ends of the two first clamping slots351of the first holding element35.

Referring toFIG.23toFIG.25, the first laminar structure56is formed by the plastic injection molding technology. The first laminar structure56is located in the first locating groove501. An inner surface of the first laminar structure56has a plurality of third attaching surfaces561. Several portions of two sides of a bottom surface of the first laminar structure56protrude downward to form the plurality of the third attaching surfaces561. In the first preferred embodiment, the plurality of the third attaching surfaces561of the first laminar structure56are corresponding to the top surfaces of the third fastening portions511of the third grounding terminals516of the two sides of the third terminal assembly5. The plurality of the third attaching surfaces561of the first laminar structure56contact with the top surfaces of the third fastening portions511of the third grounding terminals516of the two sides of the third terminal assembly5.

The first laminar structure56is spaced from the third metal block53. The first laminar structure56, the third main plate531and the plurality of the third contacting blocks534of the third metal block53surround a plurality of first internal spaces562. Each first internal space562is formed among the first laminar structure56, the third main plate531and the two adjacent third contacting blocks534of the third metal block53. The third fastening portions511of each two adjacent third differential signal terminals517of the two sides of the third terminal assembly5pass through one first internal space562. The top surface of the third fastening portion511of each third differential signal terminal517of the two sides of the third terminal assembly5is spaced from the inner surface of the first laminar structure56to form a first clearance563. A plurality of the first clearances563are formed between the third terminal assembly5and the inner surface of the first laminar structure56. The first internal space562and the first clearance563are used for adjusting the dielectric coefficient of the peripheral structure of each third terminal51of the high-speed connector100to improve the electromagnetic characteristic and the crosstalk interference of the high-speed connector100.

In the concrete implementation, according to a whole structure adjustment of the third terminal assembly5, a size of the first clearance563is changed, and the first clearance563is even canceled. An outer surface of the first laminar structure56extends outward to form a first strengthening structure564. The first strengthening structure564is used for reinforcing a structural strength of the first laminar structure56. In the first preferred embodiment, two sides of the first strengthening structure564are shown as two cross structures from a top view to reinforce the structural strength of the first laminar structure56.

Referring toFIG.3,FIG.29andFIG.30, the fourth terminal assembly6is corresponding to the third terminal assembly5along the up-down direction. The fourth terminal assembly6is mounted under the third terminal assembly5. The fourth terminal assembly6includes the plurality of fourth terminals61, a fourth base body62, a fourth metal block63and a second laminar structure64. The plurality of the fourth terminals61are fastened to the fourth base body62, and the plurality of the fourth terminals61are partially surrounded by the fourth base body62. The fourth metal block63is disposed in the fourth base body62, and the plurality of the fourth terminals61are disposed under the fourth metal block63. The second laminar structure64is disposed in the fourth base body62, and the second laminar structure64is positioned under the plurality of the fourth terminals61. The plurality of the fourth terminals61are mounted between the fourth metal block63and the second laminar structure64. The second laminar structure64is used for adjusting the dielectric coefficient of the peripheral structure of each fourth terminal61to improve the crosstalk interference of the high-speed connector100.

Referring toFIG.3toFIG.33, each fourth terminal61has a fourth fastening portion611, a fourth contacting portion612, a third bending portion613and a fourth soldering portion614. A front end of the fourth fastening portion611extends frontward and then is arched upward to form the fourth contacting portion612. A rear end of the fourth fastening portion611is bent downward to form the third bending portion613. A tail end of the third bending portion613is bent rearward to form the fourth soldering portion614. The fourth fastening portions611of the plurality of the fourth terminals61are fastened to the fourth base body62. The fourth contacting portions612of the plurality of the fourth terminals61project beyond a front surface of the fourth base body62. The fourth contacting portions612of the plurality of the fourth terminals61of the fourth terminal assembly6are disposed in the row of the third terminal slots429of the second terminal assembly4. During the assembling process of the high-speed connector100, the row of the third terminal slots429are used for preventing the fourth contacting portions612of the fourth terminal assembly6from tilting. The third bending portions613of the plurality of the fourth terminals61project beyond a rear surface of the fourth base body62. Two opposite sides of the front end of each fourth fastening portion611, two opposite sides of the rear end of each fourth fastening portion611and two opposite sides of each third bending portion613are recessed inward to from a plurality of fourth lacking grooves617. Corresponding portions of the fourth base body62are embedded in the plurality of the fourth lacking grooves617of the fourth fastening portions611and the third bending portions613of the plurality of the fourth terminals61.

The plurality of the fourth terminals61include a plurality of fourth grounding terminals615and a plurality of fourth differential signal terminals616. Each two adjacent fourth differential signal terminals616are disposed between two fourth grounding terminals615. In the first preferred embodiment, the plurality of the fourth terminals61include seven fourth grounding terminals615and twelve fourth differential signal terminals616. Each fourth differential signal terminal616is used for transmitting the signal. The fourth fastening portion611of one fourth grounding terminal615and the fourth fastening portions611of four fourth differential signal terminals616are surrounded by a middle of the fourth base body62.

The fourth base body62has a fourth surrounding portion620, a second locating pillar621, a plurality of fourth protruding portions622, a fourth fastening groove623, a plurality of fourth openings624, a plurality of fourth locking hooks625, two fourth restricting holes626and a plurality of fourth connecting portions627. The fourth surrounding portion620is disposed to the middle of the fourth base body62, and the fourth surrounding portion620is connected between a front end and a rear end of the fourth base body62. The fourth fastening portion611of the one fourth grounding terminal615and the fourth fastening portions611of the four fourth differential signal terminals616are surrounded by the fourth surrounding portion620of the fourth base body62. A top surface of the fourth surrounding portion620of the fourth base body62extends upward to form the second locating pillar621. The second locating pillar621of the fourth surrounding portion620of the fourth base body62is fastened in the second location hole526of the third base body52of the third terminal assembly5, so that the fourth terminal assembly6is fastened to the third terminal assembly5.

In the first preferred embodiment, several portions of two opposite sides of the fourth base body62extend outward to form the plurality of the fourth protruding portions622. The plurality of the fourth protruding portions622are arranged in two rows along the front-to-rear direction. A front row of the fourth protruding portions622are located above a rear row of the fourth protruding portions622. The fourth protruding portions622of the fourth base body62are buckled in the two second locating slots114and the two fourth locating slots116of the insulating housing1, so that the fourth terminal assembly6is fastened to the insulating housing1. A middle of a top surface of the front end of the fourth base body62is recessed downward to form the fourth fastening groove623. A middle of a bottom surface of the front end of the fourth base body62is recessed inward to form a second locating groove601. The fourth metal block63is disposed in the fourth fastening groove623of the fourth base body62. The second laminar structure64is mounted in the second locating groove601.

The fourth base body62has four fourth openings624. The four fourth openings624are located to two opposite sides of the fourth surrounding portion620. The front end of the fourth base body62has two fourth openings624, and the rear end of the fourth base body62has the other two fourth openings624. A front end of the fourth surrounding portion620is located between the two fourth openings624of the front end of the fourth base body62. A rear end of the fourth surrounding portion620is located between the other two fourth openings624of the rear end of the fourth base body62. Two bottoms of two sides of the fourth fastening groove623extend downward to two sides of the second locating groove601to form the two fourth openings624of the front end of the fourth base body62. The other two fourth openings624of the rear end of the fourth base body62penetrate through two sides of a top surface and two sides of a bottom surface of the rear end of the fourth base body62.

Bottom surfaces of the fourth fastening portions611of the plurality of the fourth grounding terminals615and the fourth differential signal terminals616of the fourth terminal assembly6are exposed to the second locating groove601. The fourth fastening portions611of the plurality of the fourth grounding terminals615and the fourth differential signal terminals616of two sides of the fourth terminal assembly6are exposed to the two fourth openings624of the front end of the fourth base body62. Top surfaces of the fourth fastening portions611of the plurality of the fourth grounding terminals615and the fourth differential signal terminals616of the two sides of the fourth terminal assembly6are exposed to the fourth fastening groove623from the two fourth openings624of the front end of the fourth base body62. The third bending portions613of the plurality of the fourth grounding terminals615and the fourth differential signal terminals616are exposed to the two fourth openings624of the rear end of the fourth base body62. The front end of the fourth base body62of the fourth terminal assembly6abuts against the supporting portion426of the second base body42.

A middle of the fourth fastening groove623transversely penetrate through a middle of the top surface of the fourth surrounding portion620of the fourth base body62to form a third buckling groove602. Two sides of a top of the fourth surrounding portion620extend upward and then protrude outward to form the two fourth locking hooks625. The two fourth locking hooks625are located to the middle of the fourth fastening groove623. The two fourth locking hooks625are located to the third buckling groove602. The two fourth locking hooks625are used for fastening the fourth metal block63. The two fourth restricting holes626vertically penetrate through two sides of the top surface and two sides of the bottom surface of the front end of the fourth base body62. Two fourth restricting portions637of the fourth metal block63are disposed in the two fourth restricting holes626, so that the fourth metal block63is fastened to the fourth base body62.

A lower portion of the fourth base body62has the plurality of the fourth connecting portions627. The plurality of the fourth connecting portions627are longitudinally arranged in three rows. Each row of the fourth connecting portions627are arranged transversely. Each fourth terminal61is located between two adjacent fourth connecting portions627. The plurality of the fourth connecting portions627are used to simplify the mold manufacturing process. In the first preferred embodiment, the plurality of the fourth connecting portions627are embedded in the fourth lacking grooves617of the fourth fastening portions611and the third bending portions613of the plurality of the fourth terminals61.

The fourth metal block63is fastened in the fourth fastening groove623of the fourth base body62, and the plurality of the fourth terminals61are positioned under the fourth metal block63. The fourth metal block63has a fourth main plate631, two fourth locking holes632, a plurality of fourth contacting blocks634, a plurality of fourth slits635, a plurality of fourth separating grooves636, two fourth restricting portions637and a plurality of fourth contacting points638.

The fourth main plate631is received in the fourth fastening groove623. A middle of the fourth main plate631defines the two fourth locking holes632vertically penetrating through a top surface and a bottom surface of the fourth main plate631. The two fourth locking holes632are arranged along the transverse direction. The two fourth locking hooks625of the fourth base body62pass through the two fourth locking holes632. The two fourth locking hooks625are buckled to side walls of the two fourth locking holes632. Tops of the two fourth locking hooks625are blocked by the top surface of the fourth main plate631.

In this first preferred embodiment, a width of each side of the fourth main plate631is greater than a width of the middle of the fourth main plate631. Several portions of two sides of the bottom surface of the fourth main plate631protrude downward and towards the plurality of the fourth terminals61to form the plurality of the fourth contacting blocks634. The plurality of the fourth contacting blocks634are spaced from one another. The two fourth locking holes632are located between the fourth contacting blocks634of the two sides of the bottom surface of the fourth main plate631. In the first preferred embodiment, each fourth contacting block634is rectangular. Each fourth contacting block634extends in the longitudinal direction. The plurality of the fourth contacting blocks634are in contact with the top surfaces of the fourth fastening portions611of the plurality of the fourth grounding terminals615of the fourth terminals61of the two sides of the fourth terminal assembly6to form the grounding structure90, so that the signal noise is able to be effectively absorbed and the signal noise is able to be effectively restrained for improving the transmission quality of the high-frequency signal of the high-speed connector100.

The fourth main plate631has the plurality of the fourth slits635penetrating through two sides of the top surface and the two sides of the bottom surface of the fourth main plate631. A transverse width of a bottom of each fourth slit635is narrower than a transverse width of a top of each fourth slit635. Each fourth slit635has a fourth narrow aperture6351and a fourth wide aperture6352. The fourth narrow aperture6351is formed at the bottom surface of the fourth main plate631. The fourth wide aperture6352is formed at the top surface of the fourth main plate631. The fourth narrow aperture6351and the fourth wide aperture6352are used to improve the electromagnetic field crosstalk interference.

In this first preferred embodiment, each fourth slit635is formed between two adjacent fourth contacting blocks634. Each fourth slit635extends along the longitudinal direction. Each two adjacent fourth differential signal terminals616form a fourth differential signal terminal pair. Each fourth slit635which is formed between the two adjacent fourth contacting blocks634is aligned with a fourth interstice603between the two fourth fastening portions611of the two adjacent fourth differential signal terminals616of one fourth differential signal terminal pair along the up-down direction. In the concrete implementation, the high-speed connector100is without being limited to align each fourth slit635which is formed between the two adjacent fourth contacting blocks634with the fourth interstice603between the two fourth fastening portions611of the two adjacent fourth differential signal terminals616of the one fourth differential signal terminal pair along the up-down direction.

Each fourth separating groove636is formed among the two adjacent fourth contacting blocks634and the fourth main plate631. Each fourth separating groove636is rectangular. The plurality of the fourth separating grooves636are corresponding to the fourth fastening portions611of the fourth differential signal terminals616of the two sides of the fourth terminal assembly6along the vertical direction. The fourth fastening portions611of the fourth differential signal terminals616of the two sides of the fourth terminal assembly6are received in the plurality of the fourth separating grooves636. Each two adjacent fourth differential signal terminals616are received in one fourth separating groove636. Top walls of the plurality of the fourth separating grooves636are spaced from the fourth fastening portions611of the fourth differential signal terminals616of the two sides of the fourth terminal assembly6along the vertical direction, and several portions of the fourth main plate631are defined as the top walls of the plurality of the fourth separating grooves636, so the fourth main plate631keeps distances from the fourth fastening portions611of the fourth differential signal terminals616of the two sides of the fourth terminal assembly6along the vertical direction.

Two opposite side surfaces of the fourth metal block63protrude outward and then protrude downward to form the two fourth restricting portions637. A quantity of the fourth restricting portions637of the fourth metal block63is equal to a quantity of the fourth restricting holes626of the fourth base body62. The two fourth restricting portions637of the fourth metal block63are restricted in the two fourth restricting holes626of the fourth base body62, so the fourth metal block63is fastened in the fourth fastening groove623of the fourth base body62. Several portions of two middles of a front surface and a rear surface of the fourth main plate631protrude outward to form the plurality of the fourth contacting points638. The plurality of the fourth contacting points638of the fourth main plate631abut against a front inner wall and a rear inner wall of the third buckling groove602of the fourth surrounding portion620of the fourth base body62, so that the fourth metal block63is fastened to the fourth base body62.

The fourth metal block63has the two fourth locking holes632, six fourth contacting blocks634, four fourth slits635, four fourth separating grooves636, the two fourth restricting portions637and four fourth contacting points638.

Referring toFIG.31toFIG.33, the second laminar structure64is formed by the plastic injection molding technology. The second laminar structure64is located in the second locating groove601. An inner surface of the second laminar structure64has a plurality of fourth attaching surfaces641. Several portions of two sides of a bottom surface of the second laminar structure64protrude downward to form the plurality of the fourth attaching surfaces641. In the first preferred embodiment, the plurality of the fourth attaching surfaces641of the second laminar structure64are corresponding to the bottom surfaces of the fourth fastening portions611of the fourth grounding terminals615of the two sides of the fourth terminal assembly6. The plurality of the fourth attaching surfaces641of the second laminar structure64contact with the bottom surfaces of the fourth fastening portions611of the fourth grounding terminals615of the two sides of the fourth terminal assembly6.

Referring toFIG.3,FIG.31,FIG.32andFIG.33, the second laminar structure64is spaced from the fourth metal block63. The second laminar structure64, the fourth main plate631and the plurality of the fourth contacting blocks634of the fourth metal block63surround a plurality of second internal spaces642. Each second internal space642is formed among the second laminar structure64, the fourth main plate631and the two adjacent fourth contacting blocks634of the fourth metal block63. The fourth fastening portions611of each two adjacent fourth differential signal terminals616of the two sides of the fourth terminal assembly6pass through one second internal space642. The bottom surface of the fourth fastening portion611of each fourth differential signal terminal616of the two sides of the fourth terminal assembly6is spaced from the inner surface of the second laminar structure64to form a second clearance643. A plurality of the second clearances643are formed between the fourth terminal assembly6and the inner surface of the second laminar structure64. Each second internal space642and the second clearance643are used for adjusting the dielectric coefficient of the peripheral structure of each fourth terminal61of the high-speed connector100to improve the electromagnetic characteristic and the crosstalk interference of the high-speed connector100.

In the concrete implementation, according to a whole structure adjustment of the fourth terminal assembly6, a size of the second clearance643is changed, and the second clearance643is even canceled. An outer surface of the second laminar structure64extends outward to form a second strengthening structure644. The second strengthening structure644is used for reinforcing a structural strength of the second laminar structure64. In the first preferred embodiment, two sides of the second strengthening structure644are shown as the two cross structures from a vertical view to reinforce the structural strength of the second laminar structure64.

Referring toFIG.3toFIG.33, in the first preferred embodiment, the first holding element35of the first terminal assembly3abuts against a rear end of the second holding element55of the third terminal assembly5. The rear end of the fourth base body62abuts against a front end of the second holding element55of the third terminal assembly5. The bottom surface of the third base body52of the third terminal assembly5abuts against the top surface of the front end of the fourth base body62of the fourth terminal assembly6. The bottom surface of the front end of the fourth base body62of the fourth terminal assembly6abuts against a top surface of the rear end of the second base body42of the second terminal assembly4.

Referring toFIG.1toFIG.37, the high-speed connector100in accordance with a second preferred embodiment of the present invention is shown. Differences between the high-speed connector100in accordance with the first preferred embodiment and the high-speed connector100in accordance with the second preferred embodiment are described as follows. Shapes of the first contacting blocks335of the first metal block33, the second contacting blocks434of the second metal block43, the third contacting blocks534of the third metal block53and the fourth contacting blocks634of the fourth metal block63are different. A thickness of the first main plate331of the first metal block33, a thickness of the second main plate431of the second metal block43, a thickness of the third main plate531of the third metal block53and a thickness of the fourth main plate631of the fourth metal block63are all different. In the first preferred embodiment, the first contacting blocks335of the first metal block33, the second contacting blocks434of the second metal block43, the third contacting blocks534of the third metal block53and the fourth contacting blocks634of the fourth metal block63are rectangular. In the second preferred embodiment, each first contacting block335of the first metal block33, each second contacting block434of the second metal block43, each third contacting block534of the third metal block53and each fourth contacting block634of the fourth metal block63are trapezoidal. The first metal block33, the second metal block43, the third metal block53and the fourth metal block63are forged from metal chunks.

Referring toFIG.1toFIG.37, in summary, the high-speed connector100includes at least one terminal assembly10disposed in the insulating housing1. The at least one terminal assembly10is at least one of the first terminal assembly3, the second terminal assembly4, the third terminal assembly5and the fourth terminal assembly6. The at least one terminal assembly10includes a base body101, a plurality of the terminals205fastened to the base body101, a metal block104and a laminar structure206. The plurality of the terminals205includes a plurality of grounding terminals102and a plurality of differential signal terminals103. A surface of the base body101is recessed inward to form a fastening groove105. Specifically, two opposite surfaces of the base body101are recessed inward to form the fastening groove105and a locating groove207, respectively. The plurality of the grounding terminals102and the plurality of the differential signal terminals103are fastened to the base body101. Each terminal205has a fastening portion106. Each of the plurality of the grounding terminals102and the differential signal terminals103has the fastening portion106. Two opposite ends of the fastening portion106are connected with a contacting portion107and a soldering portion108. The fastening portions106of the plurality of the grounding terminals102and the differential signal terminals103are fastened in the base body101, and the fastening portions106of the plurality of the grounding terminals102and the differential signal terminals103are partially exposed to the fastening groove105.

The metal block104is fastened in the fastening groove105. The metal block104has a main plate201. Several portions of a surface of the main plate201protrude towards the plurality of the grounding terminals102to form a plurality of contacting blocks202. The main plate201defines at least one slit203penetrating through two opposite surfaces of the main plate201along the up-down direction. The at least one slit203is formed between two adjacent contacting blocks202.

The fastening portions106of at least several of the plurality of the grounding terminals102and the differential signal terminals103are exposed to the fastening groove105. Specifically, two opposite surfaces of each fastening portion106of the plurality of the grounding terminals102and the differential signal terminals103which are fastened to two sides of the at least one terminal assembly10are exposed to the fastening groove105and the locating groove207, respectively. The fastening portions106of the grounding terminals102which are exposed to the fastening groove105are electrically connected with the plurality of the contacting blocks202of the metal block104to form the grounding structure90.

Each two adjacent differential signal terminals103are disposed between two grounding terminals102. Each two adjacent differential signal terminals103which are disposed between the two grounding terminals102form a differential signal terminal pair109. The at least one slit203is aligned with an interstice204which is formed between the two fastening portions106of the two adjacent differential signal terminals103of at least one differential signal terminal pair109, and the two fastening portions106of the two adjacent differential signal terminals103of the at least one differential signal terminal pair109are exposed to the fastening groove105. An extending direction of the at least one slit203and extending directions of the two fastening portions106of the two adjacent differential signal terminals103of the at least one differential signal terminal pair109are the same. The main plate201keeps distances from the two fastening portions106of the two adjacent differential signal terminals103of the at least one differential signal terminal pair109. The laminar structure206is fastened in the locating groove207. The laminar structure206is spaced from the main plate201and each two adjacent contacting blocks202of the metal block104to form an internal space209between the laminar structure206and the metal block104. The fastening portions106of the differential signal terminals103of the two sides of the at least one terminal assembly10pass through the internal spaces209which are formed between the laminar structure206and the metal block104. One surface of each fastening portion106of the differential signal terminals103of the two sides of the at least one terminal assembly10faces an inner surface of the laminar structure206. The one surface of each fastening portion106of the differential signal terminals103of the two sides of the at least one terminal assembly10is spaced from the inner surface of the laminar structure206to form a clearance208between the one surface of each fastening portion106of the differential signal terminals103of the two sides of the at least one terminal assembly10and the inner surface of the laminar structure206.

The base body101of the at least one terminal assembly10is at least one of the first base body32of the first terminal assembly3, the second base body42of the second terminal assembly4, the third base body52of the third terminal assembly5and the fourth base body62of the fourth terminal assembly6of the terminal module2. Each terminal205of the at least one terminal assembly10is at least one of the first terminal31of the first terminal assembly3, the second terminal41of the second terminal assembly4, the third terminal51of the third terminal assembly5and the fourth terminal61of the fourth terminal assembly6of the terminal module2. Each grounding terminal102of the at least one terminal assembly10is at least one of the first grounding terminal317of the first terminal assembly3, the second grounding terminal415of the second terminal assembly4, the third grounding terminal516of the third terminal assembly5and the fourth grounding terminal615of the fourth terminal assembly6of the terminal module2. Each differential signal terminal103of the at least one terminal assembly10is at least one of the first differential signal terminal318of the first terminal assembly3, the second differential signal terminal416of the second terminal assembly4, the third differential signal terminal517of the third terminal assembly5and the fourth differential signal terminal616of the fourth terminal assembly6of the terminal module2.

The metal block104of the at least one terminal assembly10is at least one of the first metal block33of the first terminal assembly3, the second metal block43of the second terminal assembly4, the third metal block53of the third terminal assembly5and the fourth metal block63of the fourth terminal assembly6of the terminal module2. The fastening groove105of the at least one terminal assembly10is at least one of the first fastening groove323of the first terminal assembly3, the second fastening groove423of the second terminal assembly4, the third fastening groove523of the third terminal assembly5and the fourth fastening groove623of the fourth terminal assembly6of the terminal module2. Each fastening portion106of the at least one terminal assembly10is at least one of the first fastening portion311of the first terminal31of the first terminal assembly3, the second fastening portion411of the second terminal41of the second terminal assembly4, the third fastening portion511of the third terminal51of the third terminal assembly5and the fourth fastening portion611of the fourth terminal61of the fourth terminal assembly6of the terminal module2. The contacting portion107of the at least one terminal assembly10is at least one of the first contacting portion313of the first terminal31of the first terminal assembly3, the second contacting portion413of the second terminal41of the second terminal assembly4, the third contacting portion512of the third terminal51of the third terminal assembly5and the fourth contacting portion612of the fourth terminal61of the fourth terminal assembly6of the terminal module2. The soldering portion108of the at least one terminal assembly10is at least one of the first soldering portion316of the first terminal31of the first terminal assembly3, the second soldering portion414of the second terminal41of the second terminal assembly4, the third soldering portion515of the third terminal51of the third terminal assembly5and the fourth soldering portion614of the fourth terminal61of the fourth terminal assembly6of the terminal module2. The at least one differential signal terminal pair109is at least one of the first differential signal terminal pair of the first terminal assembly3, the second differential signal terminal pair of the second terminal assembly4, the third differential signal terminal pair of the third terminal assembly5and the fourth differential signal terminal pair of the fourth terminal assembly6of the terminal module2.

The main plate201of the at least one terminal assembly10is at least one of the first main plate331of the first metal block33of the first terminal assembly3, the second main plate431of the second metal block43of the second terminal assembly4, the third main plate531of the third metal block53of the third terminal assembly5and the fourth main plate631of the fourth metal block63of the fourth terminal assembly6of the terminal module2. Each contacting block202of the at least one terminal assembly10is at least one of the first contacting block335of the first metal block33of the first terminal assembly3, the second contacting block434of the second metal block43of the second terminal assembly4, the third contacting block534of the third metal block53of the third terminal assembly5and the fourth contacting block634of the fourth metal block63of the fourth terminal assembly6of the terminal module2. The at least one slit203is at least one of the first slit336of the first metal block33, the second slit435of the second metal block43, the third slit535of the third metal block53and the fourth slit635of the fourth metal block63of the terminal module2. The interstice204of the at least one terminal assembly10is at least one of the first interstice302of the first differential signal terminal pair of the first terminal assembly3, the second interstice304of the second differential signal terminal pair of the second terminal assembly4, the third interstice503of the third differential signal terminal pair of the third terminal assembly5and the fourth interstice603of the fourth differential signal terminal pair of the fourth terminal assembly6of the terminal module2. The laminar structure206is at least one of the first laminar structure56of the third terminal assembly5and the second laminar structure64of the fourth terminal assembly6. The locating groove207is at least one of the first locating groove501of the third terminal assembly5and the second locating groove601of the fourth terminal assembly6. The clearance208is at least one of the first clearance563of the third terminal assembly5and the second clearance643of the fourth terminal assembly6. The internal space209is at least one of the first internal space562of the third terminal assembly5and the second internal space642of the fourth terminal assembly6.

In the first preferred embodiment, each contacting block202of the at least one terminal assembly10is rectangular. The first contacting block335of the first terminal assembly3, the second contacting block434of the second terminal assembly4, the third contacting block534of the third terminal assembly5and the fourth contacting block634of the fourth terminal assembly6of the terminal module2is rectangular.

In the second preferred embodiment, each contacting block202of the at least one terminal assembly10is trapezoidal. The first contacting block335of the first terminal assembly3, the second contacting block434of the second terminal assembly4, the third contacting block534of the third terminal assembly5and the fourth contacting block634of the fourth terminal assembly6of the terminal module2is trapezoidal.

As described above, the contacting blocks202of the metal block104contact with the grounding terminals102of the at least one terminal assembly10to form the grounding structures90, so that the signal noise is able to be effectively absorbed and the signal noise is able to be effectively restrained for improving the transmission quality of the high-frequency signal of the high-speed connector100. Furthermore, the first interval3414and each first gap3415of the first dielectric structure34are used for adjusting the dielectric coefficient of the peripheral structure of each first terminal31, the second interval5414and each second gap5415of the second dielectric structure54are used for adjusting the dielectric coefficient of the peripheral structure of each third terminal51, the first internal space562and the first clearance563are used for adjusting the dielectric coefficient of the peripheral structure of each third terminal51of the high-speed connector100, and each second internal space642and the second clearance643are used for adjusting the dielectric coefficient of the peripheral structure of each fourth terminal61of the high-speed connector100to improve the electromagnetic characteristic and the crosstalk interference of the high-speed connector100. In addition, the first slit336of the first metal block33, the second slit435of the second metal block43, the third slit535of the third metal block53and the fourth slit635of the fourth metal block63are used to improve the electromagnetic field crosstalk interference so as to improve the crosstalk interference of the high-speed connector100. As a result, the high-speed connector100improves the transmission quality of the high-frequency signal of the high-speed connector100by adjusting a dielectric coefficient of a peripheral structure of the terminal205of the high-speed connector100, the high-speed connector100improves the electromagnetic characteristic and the crosstalk interference of the high-speed connector100.