CN110474193B - Electrical connector - Google Patents

Abstract

The invention discloses an electric connector, which comprises a first high-speed signal terminal and a first grounding terminal which are positioned above and adjacent to each other, a second high-speed signal terminal and a second grounding terminal which are positioned below and adjacent to each other, and a first shielding sheet and a second shielding sheet which are positioned between the first high-speed signal terminal and the second high-speed signal terminal and stacked up and down, wherein the first shielding sheet is provided with a first positioning hole corresponding to the first high-speed signal terminal in a penetrating way and a first through hole corresponding to the first grounding terminal in a penetrating way, the second shielding sheet is provided with a second positioning hole corresponding to the second high-speed signal terminal in a penetrating way and a second through hole corresponding to the second grounding terminal in a penetrating way, a first connecting wall for covering the second positioning hole is arranged between the adjacent first positioning hole and the first through hole of the first shielding sheet, and a second connecting wall for covering the first positioning hole is arranged between the adjacent second positioning hole and the second through hole of the second shielding sheet, the invention can eliminate resonance, improve crosstalk effect and increase transmission rate of the electric connector.

Description

Electrical connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector, and more particularly, to an electrical connector with a good shielding effect.

[ background of the invention ]

An existing common electrical connector structure generally includes a first plastic block, an upper row of terminal groups injection-molded with the first plastic block, a second plastic block, a lower row of terminal groups injection-molded with the second plastic block, and a shielding plate located between the upper row of terminal groups and the lower row of terminal groups, where the upper row of terminal groups includes a plurality of first ground terminals and a plurality of first signal terminals, the lower row of terminal groups includes a plurality of second ground terminals and a plurality of second signal terminals, and when the shielding plate is injection-molded with the first plastic block and the upper row of terminal groups or the shielding plate is injection-molded with the second plastic block and the lower row of terminal groups, the upper row of terminal groups or the lower row of terminal groups need to be positioned to prevent the terminals from being skewed during injection molding, so that the shielding plate is correspondingly provided with a plurality of positioning holes, thereby a thimble of an injection mold passes through the plurality of positioning holes to abut against the first signal terminals, On the first ground terminal, the second signal terminal and the second ground terminal, because the shielding sheet is provided with a plurality of positioning holes corresponding to the first signal terminal, the first ground terminal, the second signal terminal and the second ground terminal in a penetrating way, the shielding sheet is difficult to completely shield the signal interference between the upper row terminal group and the lower row terminal group, the resonance problem is easy to generate and the crosstalk effect is easy to deteriorate, thereby reducing the shielding effect of the electric connector.

Therefore, there is a need for a new electrical connector to overcome the above problems.

[ summary of the invention ]

In view of the problems encountered in the background art, an object of the present invention is to provide an electrical connector capable of completely isolating and shielding signal interference between an upper row terminal set and a lower row terminal set to achieve a good shielding effect.

In order to achieve the purpose, the invention adopts the following technical scheme: an electrical connector, comprising: the insulating body comprises a base and a butting part positioned in front of the base; an upper row terminal set and a lower row terminal set, which are accommodated in the base and extend to the butt joint part, wherein the upper row terminal set comprises at least one first high-speed signal terminal and at least one first grounding terminal arranged adjacent to the first high-speed signal terminal along the transverse direction, the lower row terminal set comprises at least one second high-speed signal terminal and at least one second grounding terminal arranged adjacent to the second high-speed signal terminal along the transverse direction, and the first high-speed signal terminal and the second high-speed signal terminal are arranged along the vertical direction in a staggered manner; the first shielding sheet is accommodated in the base part and positioned between the first high-speed signal terminal and the second high-speed signal terminal, at least one first positioning hole is arranged in the first shielding sheet in a penetrating way corresponding to at least one first high-speed signal terminal, at least one first through hole is arranged in the first shielding sheet in a penetrating way corresponding to at least one first grounding terminal, and a first connecting wall is arranged between the adjacent first positioning hole and the first through hole of the first shielding sheet; a second shielding piece, accept in the basal portion just is located first shielding piece with between the second high-speed signal terminal, the second shielding piece corresponds at least one the second high-speed signal terminal runs through and is equipped with at least one second locating hole and corresponds at least one the second ground terminal runs through and is equipped with an at least second through hole, the second shielding piece is adjacent the second locating hole with be equipped with a second between the second through hole and connect the wall, first shielding piece with the second shielding piece is piled up the setting along vertical direction, first connecting wall covers the second locating hole, the second is connected the wall and is covered first locating hole.

Further, along the projection direction from top to bottom, the projection of the first positioning hole is located between the projection of the second through hole and the projection of the second positioning hole along the transverse direction.

Furthermore, a first elastic arm extends upwards from an inner edge of one side of the first through hole to be elastically abutted with the corresponding first grounding terminal, and a second elastic arm extends downwards from an inner edge of one side of the second through hole to be elastically abutted with the corresponding second grounding terminal.

Further, first bullet arm with the second bullet arm all extends towards one side buckling of butt joint portion, first bullet arm with the second bullet arm sets up along vertical direction dislocation.

Further, the first through hole and the first positioning hole are arranged in a staggered mode in the front-back direction, the second through hole and the second positioning hole are arranged in a staggered mode in the front-back direction, the first shielding sheet covers the second through hole, and the second shielding sheet covers the first through hole.

Furthermore, the first shielding plate is provided with three first through holes corresponding to at least one first ground terminal at intervals in the front-back direction, the first shielding plate is provided with three first positioning holes corresponding to at least one first high-speed signal terminal at intervals in the front-back direction, the first connecting wall extends in the front-back direction and is simultaneously connected with the three first through holes and the three first positioning holes, the second shielding plate is provided with three second through holes corresponding to at least one second ground terminal at intervals in the front-back direction, the second shielding plate is provided with three second positioning holes corresponding to at least one second high-speed signal terminal at intervals in the front-back direction, the second connecting wall extends in the front-back direction and is simultaneously connected with the three second through holes and the three second positioning holes, and the first connecting wall covers the three second positioning holes simultaneously, the second connecting wall covers three first positioning holes at the same time.

Furthermore, the first shielding piece penetrates through and is provided with at least one first fixing hole, the first fixing hole is arranged in a staggered mode with the first high-speed signal terminal and the first grounding terminal, the second shielding piece penetrates through and is provided with at least one second fixing hole, the second fixing hole is arranged in a staggered mode with the second high-speed signal terminal and the second grounding terminal, and a first fixing column penetrates through and is fixed in the first fixing hole and the second fixing hole.

Further, from the basal portion rear end is preceding to the concave installation cavity of establishing, an installation cavity has been installed a first plastic piece and a second plastic piece, first ground terminal has a plurality ofly, first high-speed signal terminal has many pairs, second ground terminal has a plurality ofly, second high-speed signal terminal has many pairs, and is a plurality of first ground terminal and many pairs first high-speed signal terminal and first shielding piece with first plastic piece injection moulding, the plastic of first plastic piece is not filled first locating hole, and is a plurality of second ground terminal is with many pairs second high-speed signal terminal and second shielding piece with second plastic piece injection moulding, the plastic of second plastic piece is not filled the second locating hole.

Further, first plastic block corresponds along vertical direction first locating hole is equipped with a first logical groove, second plastic block corresponds along vertical direction the second locating hole is equipped with a second and leads to the groove, first lead to the groove with the second leads to the groove and follows vertical direction dislocation set.

Furthermore, the first fixing column and the first plastic block are integrally formed, the second plastic block is provided with at least one first groove corresponding to the first fixing column, and the first fixing column penetrates through the first fixing hole and penetrates through the second fixing hole to extend into the first groove.

Furthermore, second plastic piece integrated into one piece has an at least second fixed column, the second shielding piece runs through and is equipped with an at least third fixed orifices, first plastic piece corresponds the second fixed column is equipped with an at least second recess, first shielding piece runs through and is equipped with an at least fourth fixed orifices, the second fixed column wears to locate the third fixed orifices and passes the fourth fixed orifices extends the entering in the second recess, the diameter of third fixed orifices is less than the diameter of second fixed orifices.

Further, a docking cavity is concavely formed from the front end face of the docking portion to the rear for a docking connector to be inserted, the upper row of terminal groups extends into the docking cavity and is arranged on the upper side of the docking cavity along the transverse direction, the lower row of terminal groups extends into the docking cavity and is arranged on the lower side of the docking cavity along the transverse direction, and the first shielding plate and the second shielding plate are both located behind the docking cavity.

Further, the upper row of terminal groups and the lower row of terminal groups are electrically connected with a cable, the cable comprises a grounding conductor, and the first shielding sheet or the second shielding sheet extends to form a bending part which is welded with the grounding conductor.

Furthermore, the upper row terminal group further includes at least one first low-speed signal terminal, the lower row terminal group further includes at least one second low-speed signal terminal, the first shielding plate is provided with at least one third positioning hole corresponding to at least one first low-speed signal terminal in a penetrating manner, the second shielding plate is provided with at least one fourth positioning hole corresponding to at least one second low-speed signal terminal in a penetrating manner, the third positioning hole and the fourth positioning hole are arranged in a staggered manner along the vertical direction, the first shielding plate covers the fourth positioning hole, and the second shielding plate covers the third positioning hole.

Further, the periphery of the base is wrapped with a metal shell, and the first shielding sheet or the second shielding sheet is in contact with the metal shell.

Compared with the prior art, the invention has the following beneficial effects:

the first shielding sheet is provided with at least one first positioning hole corresponding to at least one first high-speed signal terminal in a penetrating manner and at least one first through hole corresponding to at least one first grounding terminal in a penetrating manner, the first shielding sheet is provided with at least one first connecting wall between the adjacent first positioning hole and the first through hole, the second shielding sheet is provided with at least one second positioning hole corresponding to at least one second high-speed signal terminal in a penetrating manner and at least one second through hole corresponding to at least one second grounding terminal in a penetrating manner, the second shielding sheet is provided with a second connecting wall between the adjacent second positioning hole and the second through hole, the first shielding sheet and the second shielding sheet are stacked in the vertical direction, the first connecting wall covers the second positioning hole, and the second connecting wall covers the first positioning hole, the first positioning hole does not penetrate through the second shielding plate along the vertical direction, and the second positioning hole does not penetrate through the first shielding plate along the vertical direction, so that the first shielding plate and the second shielding plate can completely isolate and shield signal interference between the upper row of terminal groups and the lower row of terminal groups, resonance elimination and crosstalk improvement are facilitated, and the transmission rate of the first high-speed signal terminal and the second high-speed signal terminal is improved.

[ description of the drawings ]

Fig. 1 is an exploded perspective view of the electrical connector of the present invention;

FIG. 2 is a partially schematic assembled view of FIG. 1;

FIG. 3 is a perspective assembly view of the electrical connector of the present invention;

FIG. 4 is a partially assembled schematic view of the cable of FIG. 3 shown without the cable installed;

FIG. 5 is a cross-sectional view taken along A-A of FIG. 3;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 7 is a cross-sectional view taken along the line C-C of FIG. 4;

FIG. 8 is a cross-sectional view taken along D-D of FIG. 4;

fig. 9 is a schematic diagram of the first plastic block, the first shielding plate, the second shielding plate, and the second plastic block before being assembled;

fig. 10 is a top view of the first shield plate;

fig. 11 is a plan view of the second shield plate.

Detailed description of the embodiments reference is made to the accompanying drawings in which:

[ detailed description ] embodiments

For a better understanding of the objects, structure, features, and functions of the invention, reference should be made to the drawings and detailed description that follow.

As shown in fig. 1, 2 and 3, the electrical connector 100 of the present invention is an electrical connector 100, the electrical connector 100 is a Display Port plug for being mated with a Display Port socket (not shown), in other embodiments, the electrical connector 100 may be an HDMI connector or a connector of another interface for being mated with an HDMI socket or a socket of another interface, the electrical connector 100 includes an insulating body 1, an upper row terminal set 2, a lower row terminal set 3, a first shielding plate 6 and a second shielding plate 7 which are accommodated in the insulating body 1, a cable 8 which is electrically connected to the upper row terminal set 2 and the lower row terminal set 3, and a metal shell 9 which is wrapped around the insulating body 1.

As shown in fig. 1, 8 and 9, the insulation body 1 includes a base 11 and a butt joint portion 12 extending forward from the base 11, a mounting cavity 111 is recessed forward from a rear end of the base 11, the mounting cavity 111 is provided with a first plastic block 4 and a second plastic block 5, the first plastic block 4 is located above the second plastic block 5, the first plastic block 4 and the second plastic block 5 are stacked and fixed along a vertical direction, the first plastic block 4 and the second plastic block 5 are both rectangular blocks, two cylindrical first fixing columns 41 are integrally formed on a lower surface of the first plastic block 4, a first groove 51 is formed on the second plastic block 5 corresponding to each first fixing column 41, two cylindrical second fixing columns 52 are integrally formed on an upper surface of the second plastic block 5, the first plastic block 4 is provided with a second groove 42 corresponding to each second fixing column 52, in other embodiments, the first fixing posts 41 are integrally formed on the first plastic block 4, and one or more than three first fixing posts 41 are formed on the second plastic block 5, and one or more than three first grooves 51 are correspondingly formed on the second plastic block 5.

As shown in fig. 1, 3 and 9, two first abutting blocks 43 are convexly arranged on the upper surface of the first plastic block 4, each first abutting block 43 is convexly provided with a first buckling protrusion 431, the lower surface of the second plastic block 5 is convexly provided with two second abutting blocks 53, each second abutting block 53 is convexly provided with a second buckling protrusion 531, the rear end surface of the top wall of the base 11 abuts against the front end surfaces of the two first abutting blocks 43, the rear end surface of the bottom wall of the base 11 abuts against the front end surfaces of the two second abutting blocks 53, two buckling holes 91 are penetratingly arranged on the top wall of the metal shell 9 and correspondingly buckled on the two first buckling protrusions 431, and one buckling hole 91 is penetratingly arranged on the bottom wall of the metal shell 9 and buckled on the two second buckling protrusions 531.

As shown in fig. 4, 7 and 8, a docking cavity 121 is recessed from the front end surface of the docking portion 12, and the docking cavity 121 is located in front of the mounting cavity 111 and is communicated with the mounting cavity 111 for inserting a Display Port socket. The upper row terminal set 2 passes through the mounting cavity 111 and extends forward into the docking cavity 121, and is arranged on the upper side of the docking cavity 121 along the transverse direction, the lower row terminal set 3 passes through the mounting cavity 111 and extends forward into the docking cavity 121, and is arranged on the lower side of the docking cavity 121 along the transverse direction, in this embodiment, the docking portion 12 is provided with the docking cavity 121, in other embodiments, the docking portion 12 may be a tongue plate, the upper row terminal set 2 is arranged on the upper surface of the tongue plate, and the lower row terminal set 3 is arranged on the lower surface of the tongue plate.

As shown in fig. 1, 6, 7 and 8, the upper terminal group 2 includes a plurality of pairs of first high-speed signal terminals 21 and a plurality of first ground terminals 22 arranged at an upper side of the docking cavity 121 along the transverse direction, and a plurality of first low-speed signal terminals 23, in this embodiment, there are three first ground terminals 22, there are two pairs of first high-speed signal terminals 21 between two adjacent first ground terminals 22, there are three first low-speed signal terminals 23, the lower terminal group 3 includes a plurality of pairs of second high-speed signal terminals 31 and a plurality of second ground terminals 32 arranged at a lower side of the docking cavity 121 along the transverse direction, and a plurality of second low-speed signal terminals 33, in this embodiment, there are two second ground terminals 32, and there are two pairs of second high-speed signal terminals 31, it is adjacent two be equipped with a pair between the second ground terminal 32 the second high-speed signal terminal 31, second low-speed signal terminal 33 has four, first high-speed signal terminal 21 with the setting of second high-speed signal terminal 31 along vertical direction dislocation, first ground terminal 22 with second ground terminal 32 along vertical direction dislocation set, first low-speed signal terminal 23 with second low-speed signal terminal 33 along vertical direction dislocation set, first high-speed signal terminal 21 with second high-speed signal terminal 31 is used for transmitting differential signal.

As shown in fig. 1, 7 and 8, each of the first high-speed signal terminals 21 and each of the first ground terminals 22 and each of the first low-speed signal terminals 23 includes a first contact portion 211 located on the upper side of the docking cavity 121, a first fixing portion 212 extending rearward from the first contact portion 211, a first welding portion 213 extending rearward from the first fixing portion 212, the first contact portion 211 protruding out of the front end of the first plastic block 4 and extending forward into the upper side of the docking cavity 121, the first fixing portion 212 being embedded in the first plastic block 4, the first welding portion 213 being exposed on the upper side of the first plastic block 4, each of the second high-speed signal terminals 31 and each of the second ground terminals 32 and each of the second low-speed signal terminals 33 including a second contact portion 311 located on the lower side of the docking cavity 121, a second fixing portion 312 extending backward from the second contact portion 311, a second welding portion 313 extending backward from the second fixing portion 312, the second contact portion 311 protruding from the front end of the second plastic block 5 and extending forward to enter the lower side of the docking cavity 121, the second fixing portion 312 embedded in the second plastic block 5, and the second welding portion 313 exposed at the lower side of the second plastic block 5.

As shown in fig. 1, 6, 10 and 11, the first shielding plate 6 is accommodated in the base 11 and located between the first high-speed signal terminal 21 and the second high-speed signal terminal 31, the second shielding plate 7 is accommodated in the base 11 and located between the first shielding plate 6 and the second high-speed signal terminal 31, the first shielding plate 6 and the second shielding plate 7 are located behind the mating cavity 121, the first shielding plate 6 is provided with at least one first positioning hole 61 corresponding to each first high-speed signal terminal 21, in this embodiment, the first shielding plate 6 is provided with three first positioning holes 61 corresponding to each first high-speed signal terminal 21 at intervals in the front-back direction, the first shielding plate 6 is provided with at least one first through hole 62 corresponding to each first ground terminal 22, the first shielding plate 6 is provided with three first through holes 62 corresponding to each first ground terminal 22 at intervals in the front-back direction, the first shielding plate 6 is provided with a first connecting wall 63 between the adjacent first positioning hole 61 and the first through hole 62, the second shielding plate 7 is provided with at least one second positioning hole 71 corresponding to each second high-speed signal terminal 31 at intervals in the front-back direction, in this embodiment, the second shielding plate 7 is provided with three second positioning holes 71 corresponding to each second high-speed signal terminal 31 at intervals in the front-back direction, the second shielding plate 7 is provided with at least one second through hole 72 corresponding to each second ground terminal 32 at intervals in the front-back direction, in this embodiment, the second shielding plate 7 is provided with a second connecting hole 72 corresponding to each second ground terminal 32 at intervals in the front-back direction, and the second shielding plate 7 is provided with a second connecting hole 72 between the adjacent second positioning hole 71 and the second through hole 72 The wall 73, the first shielding plate 6 and the second shielding plate 7 are stacked in the up-down direction, the first positioning hole 61 and the second positioning hole 71 are disposed in a staggered manner in the vertical direction, the first connecting wall 63 and the second connecting wall 73 are disposed in a staggered manner in the vertical direction, the first connecting wall 63 covers the second positioning hole 71, the second connecting wall 73 covers the first positioning hole 61, so that the first positioning hole 61 does not penetrate through the second shielding plate 7 in the vertical direction, and the second positioning hole 71 does not penetrate through the first shielding plate 6 in the vertical direction, the first shielding plate 6 and the second shielding plate 7 can completely isolate and shield signal interference between the upper row terminal group 2 and the lower row terminal group 3, thereby facilitating resonance elimination and crosstalk improvement, and facilitating improvement of transmission rates of the first high-speed signal terminal 21 and the second high-speed signal terminal 31, the shielding performance of the electrical connector 100 is improved.

As shown in fig. 1, 6, 10 and 11, the first shielding plate 6 is provided with three first positioning holes 61 at intervals along the front-rear direction corresponding to each first high-speed signal terminal 21, and in the injection molding process, the first high-speed signal terminals 21 are positioned at multiple points, so that the first high-speed signal terminals 21 can be effectively prevented from being deviated due to the injection molding pressure, and the molding effect is good, the second shielding plate 7 is provided with three second positioning holes 71 at intervals along the front-rear direction corresponding to each second high-speed signal terminal 31, and in the injection molding process, the second high-speed signal terminals 31 are positioned at multiple points, so that the second high-speed signal terminals 31 can be effectively prevented from being deviated due to the injection molding pressure, and the molding effect is good. Each first connecting wall 63 extends along the front-back direction and is connected with three first through holes 62 and three first positioning holes 61 at the same time, each first connecting wall 63 covers three corresponding second positioning holes 71 at the same time, the length of each first connecting wall 63 extending along the front-back direction is matched with the distribution of the corresponding second positioning holes 71, so that the first connecting wall 63 can completely cover all the corresponding second positioning holes 71, each second connecting wall 73 extends along the front-back direction and is connected with three second through holes 72 and three second positioning holes 71 at the same time, each second connecting wall 73 covers three corresponding first positioning holes 61 at the same time, and the length of each second connecting wall 73 extending along the front-back direction is matched with the distribution of the corresponding first positioning holes 61, so that the second connecting wall 73 can completely cover all the corresponding first positioning holes 61, the shielding effect is improved, the front ends of the first shielding sheet 6 and the second shielding sheet 7 extend to the front end of the first fixing portion 212, the rear ends of the first shielding sheet 6 and the second shielding sheet 7 extend to the rear end of the first welding portion 213, the first shielding sheet 6 and the second shielding sheet 7 shield the first fixing portion 212 and the first welding portion 213 of the first high-speed signal terminal 21 and the second fixing portion 312 and the second welding portion 313 of the second high-speed signal terminal 31, and the shielding effect is good.

As shown in fig. 6, in the projection direction from top to bottom, the projection of the first positioning hole 61 is located between the projection of the second through hole 72 and the projection of the second positioning hole 71 in the transverse direction, and the projection of the second positioning hole 71 is located between the projection of the first through hole 62 and the projection of the first positioning hole 61 in the transverse direction, so that the second connecting wall 73 connecting the second through hole 72 and the second positioning hole 71 can completely cover the corresponding first positioning hole 61, and the first connecting wall 63 connecting the first through hole 62 and the first positioning hole 61 can completely cover the corresponding second positioning hole 71.

As shown in fig. 7, 8 and 9, the inner edge of the rear side of each first through hole 62 is bent upward and extended, then bent horizontally toward a side close to the docking cavity 121 to extend a first elastic arm 64 in elastic contact with the corresponding first ground terminal 22, the inner edge of the rear side of each second through hole 72 is bent downward and extended, then bent horizontally toward a side close to the docking cavity 121 to extend a second elastic arm 74 in elastic contact with the corresponding second ground terminal 32, the first shielding plate 6 has three first elastic arms 64 spaced apart from each first ground terminal 22 in the front-back direction and is in elastic contact with three different portions of the first fixing portion 212 of the first ground terminal 22, and the second shielding plate 7 has three second elastic arms 74 spaced apart from each second ground terminal 32 in the front-back direction and three different portions of the second fixing portion 312 of the second ground terminal 32 in the front-back direction The first ground terminal 22 and the first shielding plate 6 form a plurality of ground loops, and the second ground terminal 32 and the second shielding plate 7 form a plurality of ground loops, so that the effect of eliminating resonance is improved, and the signal interference between the first high-speed signal terminal 21 and the second high-speed signal terminal 31 is further reduced. The first elastic arm 64 and the second elastic arm 74 are vertically offset to elastically abut against the first ground terminal 22 and the second ground terminal 32, respectively.

As shown in fig. 7, 8 and 9, each of the first elastic arm 64 and each of the second elastic arm 74 are bent toward a side close to the abutting portion 12, wherein the first elastic arm 64 located at the forefront is located at the front end of the first shielding plate 6, the second elastic arm 74 is located at the front end of the second shielding plate 7, and the first elastic arm 64 and the second elastic arm 74 are bent toward a side of the abutting portion 12, so that the first elastic arm 64 located at the forefront and the second elastic arm 74 located at the forefront are as close to the first contact portion 211 and the second contact portion 311 as possible, which improves the effect of eliminating resonance, the bending directions of the three first elastic arms 64 are the same, facilitates stamping, and can punch three first elastic arms 64 on the first shielding plate 6 at a time, thereby ensuring the structural consistency of the three punched first elastic arms 64, the bending directions of the three second elastic arms 74 are the same, the three second elastic arms 74 can be punched on the second shielding plate 7 at one time, the structural consistency of the punched three second elastic arms 74 is ensured, the first shielding plate 6 and the second shielding plate 7 are convenient to mold, and the manufacturing process is simplified.

As shown in fig. 10 and 11, the first through-hole 62 and the first positioning hole 61 are arranged in a staggered manner in the front-rear direction, the second through-hole 72 and the second positioning hole 71 are arranged in a staggered manner in the front-rear direction, the first through-hole 62 and the first positioning hole 61 are not easily arranged in a concentrated manner, the situation that the strength of the first shielding plate 6 is poor due to the excessively narrow joint between the first through-hole 62 and the first positioning hole 61, the situation that the strength of the second shielding plate 7 is poor due to the excessively narrow joint between the second through-hole 72 and the second positioning hole 71 is avoided, and meanwhile, the situation that the first elastic arm 64 is punched out in a sufficient area reserved on the first shielding plate 6 and the second elastic arm 74 is punched out in a sufficient area reserved on the second shielding plate 7 is facilitated, the first through hole 62 and the second through hole 72 are arranged along the vertical direction in a staggered manner, the first shielding sheet 6 covers the second through hole 72, the second shielding sheet 7 covers the first through hole 62, the first through hole 62 does not penetrate through the second shielding sheet 7 along the vertical direction, and meanwhile, the second through hole 72 does not penetrate through the first shielding sheet 6 along the vertical direction, so that the shielding effect of the first shielding sheet 6 and the second shielding sheet 7 is further improved, resonance is better eliminated, crosstalk is better improved, and the transmission rate of the first high-speed signal terminal 21 and the second high-speed signal terminal 31 is further improved.

As shown in fig. 6, 10 and 11, the first shielding plate 6 is provided with at least one third positioning hole 65 penetrating through the first low-speed signal terminal 23, in this embodiment, the first shielding plate 6 is provided with three third positioning holes 65 penetrating through the first low-speed signal terminals 23 at intervals in the front-back direction, the second shielding plate 7 is provided with at least one fourth positioning hole 75 penetrating through the second low-speed signal terminals 33 at intervals in the front-back direction, in this embodiment, the second shielding plate 7 is provided with three fourth positioning holes 75 penetrating through the second low-speed signal terminals 33 at intervals in the front-back direction, the third positioning holes 65 and the fourth positioning holes 75 are staggered in the vertical direction, the first shielding plate 6 covers the three fourth positioning holes 75 in the vertical direction, the second shielding plate 7 covers the three third positioning holes 65 in the vertical direction, in other embodiments, the third positioning holes 65 are not formed through the second shielding plate 7 along the vertical direction, and the fourth positioning holes 75 are not formed through the first shielding plate 6 along the vertical direction, so as to further improve the shielding effect between the first shielding plate 6 and the second shielding plate 7, to better eliminate the resonance effect and improve the crosstalk, and to further improve the transmission rate between the first high-speed signal terminals 21 and the second high-speed signal terminals 31, in which the first positioning holes 65 are formed through the first shielding plate 6 corresponding to each of the first low-speed signal terminals 23 along the front-rear direction at intervals and are smaller than three or larger than three, the fourth positioning holes 75 are formed through the second shielding plate 7 corresponding to each of the second low-speed signal terminals 33 along the front-rear direction at intervals, as long as the first shielding plate 6 can cover all the fourth positioning holes 75, as long as it is satisfied that the second shielding plate 7 can cover all the third positioning holes 65.

As shown in fig. 1, 8 and 9, the first shielding plate 6 is provided with two first fixing holes 67 distributed diagonally and two fourth fixing holes 66 distributed diagonally, the two first fixing holes 67 and the two fourth fixing holes 66 are vertically offset from the first high-speed signal terminal 21 and the first ground terminal 22, each first fixing post 41 is provided to pass through each first fixing hole 67, the second shielding plate 7 is provided with two second fixing holes 76 distributed diagonally and two third fixing holes 77 distributed diagonally, in this embodiment, one of the second fixing holes 76 and one of the third fixing holes 77 are vertically offset from the second high-speed signal terminal 31 and the second ground terminal 32, and the other of the second fixing holes 76 and the other of the third fixing holes 77 are vertically offset from the second high-speed signal terminal 31, and are aligned with the second ground terminal 32, in other embodiments, two or more second fixing holes 76 are provided through the second shielding plate 7, and are offset from the second high-speed signal terminal 31 and the second ground terminal 32, each second fixing post 52 is provided through each third fixing hole 77, when the first plastic block 4 and the second plastic block 5 are assembled together along the vertical direction, the first fixing post 41 passes through the corresponding second fixing hole 76 and extends into the corresponding first groove 51, and the second fixing post 52 passes through the corresponding fourth fixing hole 66 and extends into the corresponding second groove 42, so as to fix the first plastic block 4, the first shielding plate 6, the second shielding plate 7, and the second plastic block 5, more firmly, and less easily separate, the diameter of the third fixing hole 77 is smaller than that of the second fixing hole 76, the diameter of the first fixing hole 67 is smaller than that of the fourth fixing hole 66, so that the third fixing hole 77 and the second fixing hole 76 as well as the first fixing hole 67 and the fourth fixing hole 66 can be visually distinguished, the third fixing hole 77 and the second fixing hole 76 as well as the first fixing hole 67 and the fourth fixing hole 66 are prevented from being mixed, the first plastic block 4 and the second plastic block 5 are difficult to assemble and fix together in the later period, the first fixing column 41 can conveniently penetrate through the second fixing hole 76, and the second fixing column 52 can penetrate through the fourth fixing hole 66, in other embodiments, the number of the first fixing holes 67, the second fixing holes 76, the third fixing holes 77 and the fourth fixing holes 66 is not limited as long as the number matches the number of the first fixing posts 41 and the second fixing posts 52.

As shown in fig. 1 and 6, when the first plastic block 4 is injection molded on the upper row terminal group 2 and the first shielding plate 6, the thimble of the injection mold passes through the first positioning hole 61 on the first shielding plate 6 and abuts against the first high-speed signal terminal 21, the thimble of the injection mold passes through the third positioning hole 65 on the second shielding plate 7 and abuts against the first low-speed signal terminal 23, so as to avoid the first high-speed signal terminal 21 and the first low-speed signal terminal 23 from shifting due to the injection pressure during the injection molding process, the first plastic block 4 is provided with a first through groove 44 corresponding to each first positioning hole 61 along the vertical direction, the first plastic block 4 is provided with a third through groove (unnumbered) corresponding to each third positioning hole 65 along the vertical direction, and the plastic of the first plastic block 4 is not filled in each first positioning hole 61, each first through groove 44 is not filled in the plastic of the first plastic block 4, Each of the third positioning holes 65, each of the first through grooves 44, and each of the third through grooves, when the second plastic block 5 is injection-molded on the lower row terminal set 3 and the second shielding plate 7, a thimble of an injection mold passes through the second positioning hole 71 of the second shielding plate 7 and abuts against the second high-speed signal terminal 31, a thimble of the injection mold passes through the fourth positioning hole 75 of the second shielding plate 7 and abuts against the second low-speed signal terminal 33, so as to prevent the second high-speed signal terminal 31 and the second low-speed signal terminal 33 from shifting due to injection molding pressure during injection molding, the second plastic block 5 is provided with a second through groove 54 along the vertical direction corresponding to each of the second positioning holes 71, the first through groove 44 and the second through groove 54 are vertically staggered, and the second plastic block 5 is provided with a fourth through groove (not numbered) along the vertical direction corresponding to each of the fourth positioning holes 75 The third through grooves and the fourth through grooves are arranged in a staggered manner in the vertical direction, and the second positioning holes 71, the fourth positioning holes 75, the second through grooves 54 and the fourth through grooves are not filled with the plastic of the second plastic block 5.

As shown in fig. 3 and 5, the cable 8 includes four first high-speed signal wires 81, three first ground wires 82, three first low-speed signal wires 83, four second high-speed signal wires 84, two second ground wires 85, four second low-speed signal wires 86, and a ground wire 87, the first welding portion 213 of each first high-speed signal terminal 21 is welded to each corresponding first high-speed signal wire 81, the first welding portion 213 of each first ground terminal 22 is welded to each corresponding first ground wire 82, the first welding portion 213 of each first low-speed signal terminal 23 is welded to each corresponding first low-speed signal wire 83, the second welding portion 313 of each second high-speed signal terminal 31 is welded to each corresponding second signal wire, the second welding portion 313 of each second ground terminal 32 is welded to each corresponding second ground wire 85, in other embodiments, the second shielding plate 7 extends to have the bent portion 68 exposed outside the second plastic block 5 and is welded to the ground lead 87, or the first shielding plate 6 and the second shielding plate 7 are both welded to the ground lead 87 or the first shielding plate 6 or the second shielding plate 7 is in contact with the metal shell 9 (not shown), as long as the first shielding plate 6 and the second shielding plate 7 can be ensured to realize multi-point grounding, so as to improve the shielding effect.

The assembly steps of the electrical connector 100 of the present invention are as follows:

the first plastic block 4 is injection molded on the upper row terminal set 2 and the first shielding plate 6, the second plastic block 5 is injection molded on the lower row terminal set 3 and the second shielding plate 7, then the first plastic block 4 and the second plastic block 5 are assembled together along the vertical direction, the first fixing post 41 passes through the corresponding second fixing hole 76 and extends into the corresponding first groove 51, the second fixing post 52 passes through the corresponding fourth fixing hole 66 and extends into the corresponding second groove 42, thereby fixing the first plastic block 4 and the second plastic block 5, then the fixed first plastic block 4 and the fixed second plastic block 5 are installed on the installation cavity 111 of the base 11 together from the back to the front direction, the first contact part 211 of the upper row terminal set 2 extends forwards into the upper side of the docking cavity 121, the second contact portion 311 of the lower terminal group 3 extends forward to enter the lower side of the docking cavity 121, the rear end surface of the top wall of the base portion 11 abuts against the front end surfaces of the two first abutting blocks 43, the rear end surface of the bottom wall of the base portion 11 abuts against the front end surfaces of the two second abutting blocks 53, then the metal shell 9 is assembled to the docking portion 12 and the base portion 11 from the forward and backward direction, the retaining hole 91 of the top wall of the metal shell 9 is fixedly retained with the first retaining protrusion 431, the retaining hole 91 of the bottom wall of the metal shell 9 is fixedly retained with the second retaining protrusion 531, so that the metal shell 9 and the base portion 11 are fixed together, and finally the upper terminal group 2 and the lower terminal group 3 are welded to the cable 8.

In summary, the electrical connector 100 of the present invention has the following beneficial effects:

(1) the first shielding sheet 6 is provided with the first positioning hole 61 corresponding to the first high-speed signal terminal 21 and the first through hole 62 corresponding to the first ground terminal 22, the first shielding sheet 6 is provided with the first connecting wall 63 between the first positioning hole 61 and the first through hole 62 which are adjacent to each other, the second shielding sheet 7 is provided with the second positioning hole 71 corresponding to the second high-speed signal terminal 31 and the second through hole 72 corresponding to the second ground terminal 32, the second shielding sheet 7 is provided with the second connecting wall 73 between the second positioning hole 71 and the second through hole 72 which are adjacent to each other, the first shielding sheet 6 and the second shielding sheet 7 are stacked up and down, the first connecting wall 63 covers the second positioning hole 71, and the second connecting wall 73 covers the first positioning hole 61, the first positioning hole 61 does not penetrate through the second shielding plate 7 in the vertical direction, and the second positioning hole 71 does not penetrate through the first shielding plate 6 in the vertical direction, so that the first shielding plate 6 and the second shielding plate 7 can completely isolate and shield signal interference between the first high-speed signal terminal 21 and the second high-speed signal terminal 31, thereby facilitating elimination of resonance and improvement of crosstalk effect, facilitating improvement of transmission rate of the first high-speed signal terminal 21 and the second high-speed signal terminal 31, and improving shielding performance of the electrical connector 100.

(2) Along the projection direction from top to bottom, the projection of the first positioning hole 61 is located between the projection of the second through hole 72 and the projection of the second positioning hole 71 along the transverse direction, and the projection of the second positioning hole 71 is located between the projection of the first through hole 62 and the projection of the first positioning hole 61 along the transverse direction, so that the second connecting wall 73 connecting the second through hole 72 and the second positioning hole 71 can completely cover the corresponding first positioning hole 61, and the first connecting wall 63 connecting the first through hole 62 and the first positioning hole 61 can completely cover the corresponding second positioning hole 71.

(3) The first through hole 62 and the first positioning hole 61 are arranged in a staggered manner in the front-back direction, the second through hole 72 and the second positioning hole 71 are arranged in a staggered manner in the front-back direction, the first through hole 62 and the first positioning hole 61 are not easy to concentrate, the situation that the strength of the first shielding sheet 6 is poor due to the excessively narrow joint between the first through hole 62 and the first positioning hole 61 is avoided, the situation that the strength of the second shielding sheet 7 is poor due to the excessively narrow joint between the second through hole 72 and the second positioning hole 71 is avoided, meanwhile, the sufficient area is reserved on the first shielding sheet 6 for punching the first elastic arm 64 and the sufficient area is reserved on the second shielding sheet 7 for punching the second elastic arm 74 are facilitated, the first through hole 62 and the second through hole 72 are arranged in a staggered manner in the vertical direction, the first shielding sheet 6 covers the second through hole 72, the second shielding sheet 7 covers the first through hole 62, the first through hole 62 does not penetrate through the second shielding sheet 7 along the vertical direction, and the second through hole 72 does not penetrate through the first shielding sheet 6 along the vertical direction, so that the shielding effect of the first shielding sheet 6 and the second shielding sheet 7 is further improved, resonance is better eliminated, crosstalk is improved, and the transmission rate of the first high-speed signal terminal 21 and the second high-speed signal terminal 31 is further improved.

(4) The first shielding plate 6 is provided with three first elastic arms 64 corresponding to each first ground terminal 22 along the front-back direction at intervals, and the three first elastic arms are elastically abutted with three different parts of the first fixing part 212 of the corresponding first ground terminal 22, the second shielding plate 7 is provided with three second elastic arms 74 corresponding to each second ground terminal 32 at intervals along the front-back direction, and the three second elastic arms are elastically abutted with three different parts of the second fixing part 312 of the corresponding second ground terminal 32, so that the contact is more stable, a plurality of ground loops are formed between the first ground terminal 22 and the first shield plate 6, and a plurality of ground loops are formed between the second ground terminal 32 and the second shield plate 7, so that the effect of eliminating resonance is improved, and the signal interference between the first high-speed signal terminal 21 and the second high-speed signal terminal 31 is further reduced. The first elastic arm 64 and the second elastic arm 74 are vertically offset to elastically abut against the first ground terminal 22 and the second ground terminal 32, respectively.

(5) Each of the first elastic arm 64 and the second elastic arm 74 are disposed to be bent toward a side close to the docking cavity 121, wherein the first elastic arm 64 located at the forefront is located at the front end of the first shielding plate 6, the second elastic arm 74 is located at the front end of the second shielding plate 7, and the first elastic arm 64 and the second elastic arm 74 are disposed to be bent toward a side of the docking portion 12, so that the first elastic arm 64 located at the forefront and the second elastic arm 74 located at the forefront are located as close to the first contact portion 211 and the second contact portion 311 as possible, the effect of eliminating resonance is improved, the three first elastic arms 64 are bent in the same direction, three first elastic arms 64 can be punched on the first shielding plate 6 at a time, the structural consistency of the three punched first elastic arms 64 is ensured, and the three second elastic arms 74 are bent in the same direction, the second elastic arms 74 can be punched on the second shielding plate 7 three at a time, the structural consistency of the punched three second elastic arms 74 is ensured, the first shielding plate 6 and the second shielding plate 7 are convenient to mold, and the manufacturing process is simplified.

(6) The first shielding sheet 6 is provided with the first fixing hole 67 in a penetrating manner, the first fixing hole 67 is arranged in a staggered manner with the first high-speed signal terminal 21 and the first grounding terminal 22, the second shielding sheet 7 is provided with the second fixing hole 76 in a penetrating manner, the second fixing hole 76 is arranged in a staggered manner with the second high-speed signal terminal 31 and the second grounding terminal 32, the first fixing column 41 is integrally formed on the first plastic block 4, the second plastic block 5 is provided with the first groove 51 corresponding to the first fixing column 41, the first fixing column 41 is arranged in the first fixing hole 67 in a penetrating manner and penetrates through the second fixing hole 76 to extend into the first groove 51, so that the first plastic block 4, the first shielding sheet 6, the second shielding sheet 7 and the second plastic block 5 are fixed together, and the fixation is firmer, is not easy to separate.

(7) The third positioning hole 65 is formed through the first shielding plate 6 corresponding to the first low-speed signal terminal 23, the second shielding plate 7 is provided with the fourth positioning hole 75 corresponding to the second low-speed signal terminal 33, the third positioning hole 65 and the fourth positioning hole 75 are arranged in a staggered manner in the vertical direction, the first shielding plate 6 covers the fourth positioning hole 75, the second shielding plate 7 covers the third positioning hole 65, the third positioning hole 65 does not penetrate through the second shielding plate 7 in the vertical direction, the fourth positioning hole 75 does not penetrate through the first shielding plate 6 in the vertical direction, so that the shielding effect of the first shielding plate 6 and the second shielding plate 7 is further improved, the resonance eliminating effect is better, the crosstalk is improved, and the transmission rate of the first high-speed signal terminal 21 and the second high-speed signal terminal 31 is further improved.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all technical changes that can be made by applying the present specification and the drawings are included in the scope of the present invention.

Claims (14)

1. An electrical connector, comprising:

the insulating body comprises a base and a butting part positioned in front of the base;

an upper row terminal set and a lower row terminal set, which are accommodated in the base and extend to the butt joint part, wherein the upper row terminal set comprises at least one first high-speed signal terminal and at least one first grounding terminal arranged adjacent to the first high-speed signal terminal along the transverse direction, the lower row terminal set comprises at least one second high-speed signal terminal and at least one second grounding terminal arranged adjacent to the second high-speed signal terminal along the transverse direction, and the first high-speed signal terminal and the second high-speed signal terminal are arranged along the vertical direction in a staggered manner;

the first shielding sheet is accommodated in the base part and positioned between the first high-speed signal terminal and the second high-speed signal terminal, at least one first positioning hole is arranged in the first shielding sheet in a penetrating way corresponding to at least one first high-speed signal terminal, at least one first through hole is arranged in the first shielding sheet in a penetrating way corresponding to at least one first grounding terminal, and a first connecting wall is arranged between the adjacent first positioning hole and the first through hole in the transverse direction of the first shielding sheet;

the second shielding sheet is accommodated in the base part and positioned between the first shielding sheet and the second high-speed signal terminal, at least one second positioning hole is formed in the second shielding sheet in a penetrating manner corresponding to at least one second high-speed signal terminal, at least one second through hole is formed in the second shielding sheet in a penetrating manner corresponding to at least one second ground terminal, a second connecting wall is arranged between the adjacent second positioning holes and the second through holes in the transverse direction of the second shielding sheet, the first shielding sheet and the second shielding sheet are stacked in the vertical direction, the second positioning hole is covered by the first connecting wall, and the first positioning hole is covered by the second connecting wall;

a mounting cavity is concavely arranged forwards from the rear end of the base part, the mounting cavity is provided with a first plastic block and a second plastic block, the number of the first grounding terminals is multiple, the number of the first high-speed signal terminals is multiple, the number of the second grounding terminals is multiple, the number of the second high-speed signal terminals is multiple, the number of the first grounding terminals and the number of the pairs of the first high-speed signal terminals and the first shielding sheets are injection molded with the first plastic block, and the number of the second grounding terminals and the number of the pairs of the second high-speed signal terminals and the second shielding sheets are injection molded with the second plastic block;

a first elastic arm extends upwards from the inner edge of one side of each first through hole and is in elastic abutting connection with the corresponding first grounding terminal, a second elastic arm extends downwards from the inner edge of one side of each second through hole and is in elastic abutting connection with the corresponding second grounding terminal, the first elastic arm and the second elastic arm are arranged in a staggered mode along the vertical direction, and the first grounding terminal and the second grounding terminal are arranged in a staggered mode along the vertical direction.

2. The electrical connector of claim 1, wherein: along the projection direction from top to bottom, the projection of the first positioning hole is located between the projection of the second through hole and the projection of the second positioning hole along the transverse direction.

3. The electrical connector of claim 1, wherein: the first elastic arm and the second elastic arm are bent and extended towards one side of the butt joint part.

4. The electrical connector of claim 1, wherein: the first through hole and the first positioning hole are arranged in a staggered mode along the front-back direction, the second through hole and the second positioning hole are arranged in a staggered mode along the front-back direction, the first shielding sheet covers the second through hole, and the second shielding sheet covers the first through hole.

5. The electrical connector of claim 1, wherein: the first shielding plate is provided with three first through holes corresponding to at least one first grounding terminal at intervals along the front-back direction, the first shielding plate is provided with three first positioning holes corresponding to at least one first high-speed signal terminal at intervals along the front-back direction, the first connecting wall extends along the front-back direction and is simultaneously connected with the three first through holes and the three first positioning holes, the second shielding plate is provided with three second through holes corresponding to at least one second grounding terminal at intervals along the front-back direction, the second shielding plate is provided with three second positioning holes corresponding to at least one second high-speed signal terminal at intervals along the front-back direction, the second connecting wall extends along the front-back direction and is simultaneously connected with the three second through holes and the three second positioning holes, and the first connecting wall covers the three second positioning holes simultaneously, the second connecting wall covers three first positioning holes at the same time.

6. The electrical connector of claim 1, wherein: the first shielding piece penetrates through and is provided with at least one first fixing hole, the first fixing hole is arranged in a staggered mode with the first high-speed signal terminal and the first grounding terminal, the second shielding piece penetrates through and is provided with at least one second fixing hole, the second fixing hole is arranged in a staggered mode with the second high-speed signal terminal and the second grounding terminal, and a first fixing column penetrates through and is fixed in the first fixing hole and the second fixing hole.

7. The electrical connector of claim 6, wherein: the first positioning hole is not filled with the plastic of the first plastic block, and the second positioning hole is not filled with the plastic of the second plastic block.

8. The electrical connector of claim 7, wherein: the first plastic block corresponds to the first positioning hole along the vertical direction and is provided with a first through groove, the second plastic block corresponds to the second positioning hole along the vertical direction and is provided with a second through groove, and the first through groove and the second through groove are arranged in a staggered mode.

9. The electrical connector of claim 7, wherein: the first fixing column and the first plastic block are integrally formed, the second plastic block is provided with at least one first groove corresponding to the first fixing column, and the first fixing column penetrates through the first fixing hole and penetrates through the second fixing hole to extend into the first groove.

10. The electrical connector of claim 9, wherein: the second plastic piece integrated into one piece has an at least second fixed column, the second shielding piece runs through and is equipped with an at least third fixed orifices, first plastic piece corresponds the second fixed column is equipped with an at least second recess, first shielding piece runs through and is equipped with an at least fourth fixed orifices, the second fixed column wears to locate the third fixed orifices and passes the fourth fixed orifices extends to get into in the second recess, the diameter of third fixed orifices is less than the diameter of second fixed orifices, the diameter of third fixed orifices is less than the diameter of fourth fixed orifices.

11. The electrical connector of claim 1, wherein: a docking cavity is concavely arranged backwards from the front end face of the docking part for a docking connector to be inserted, the upper row of terminal groups extend into the docking cavity and are arranged on the upper side of the docking cavity along the transverse direction, the lower row of terminal groups extend into the docking cavity and are arranged on the lower side of the docking cavity along the transverse direction, and the first shielding sheet and the second shielding sheet are both positioned behind the docking cavity.

12. The electrical connector of claim 1, wherein: the upper row of terminal groups and the lower row of terminal groups are electrically connected with a cable, the cable comprises a grounding conductor, the first shielding sheet is closer to the grounding conductor than the second shielding sheet in the vertical direction, and one side of the first shielding sheet close to the grounding conductor in the transverse direction extends to form a bending part to be welded with the grounding conductor.

13. The electrical connector of claim 1, wherein: the upper row terminal group further comprises at least one first low-speed signal terminal, the lower row terminal group further comprises at least one second low-speed signal terminal, the first shielding sheet is provided with at least one third positioning hole corresponding to at least one first low-speed signal terminal in a penetrating mode, the second shielding sheet is provided with at least one fourth positioning hole corresponding to at least one second low-speed signal terminal in a penetrating mode, the third positioning hole and the fourth positioning hole are arranged in a staggered mode along the vertical direction, the first shielding sheet covers the fourth positioning hole, and the second shielding sheet covers the third positioning hole.

14. The electrical connector of claim 1, wherein: the periphery of the base is wrapped with a metal shell, and the first shielding sheet or the second shielding sheet is in contact with the metal shell.

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