CN219513458U - Electric connector - Google Patents

Abstract

The utility model provides an electric connector, which comprises an insulating body, wherein the insulating body is provided with a tongue plate protruding forwards, a plurality of signal terminals and a plurality of grounding terminals are accommodated in the insulating body, each terminal is provided with a contact part exposed on one side of the tongue plate, and a grounding component is embedded in the insulating body, the grounding component comprises a shielding sheet and a plurality of guide connectors welded on the shielding sheet, the shielding sheet is provided with a main body part embedded in the tongue plate and is opposite to the contact parts, the main body part is not provided with a broken hole, the integrity of the main body part is maintained, the strength of the main body part is enhanced, the shielding effect on the signal terminals is improved, and the guide connectors are welded on at least one side of the main body part and are in one-to-one correspondence with and butt joint with the grounding terminals, so that the grounding terminals reach common potential, and resonance is eliminated.

Description

Electric connector

[ field of technology ]

The present utility model relates to an electrical connector, and more particularly, to an electrical connector with shielding plates.

[ background Art ]

In the prior art, the electrical connector includes an insulation body, the insulation body has a tongue plate extending forward, two rows of terminals are respectively accommodated on the upper and lower surfaces of the tongue plate, each row of terminals includes a plurality of signal terminals and a plurality of grounding terminals, a shielding sheet is embedded in the tongue plate and is located between the upper and lower rows of terminals to reduce signal crosstalk between the upper and lower rows of signal terminals, and a plurality of elastic sheets are formed on the shielding sheet by breaking holes to be respectively abutted against the plurality of grounding terminals in the upper and lower rows of terminals so that the plurality of grounding terminals reach the same electric potential to eliminate resonance.

However, the integrity of the shielding sheet can be damaged by the manner of forming the elastic sheet by breaking the hole, signal leakage is easy to occur from the broken hole of the shielding sheet, so that crosstalk is serious between the upper and lower rows of signal terminals, and moreover, when the upper and lower rows of signal terminals are required to be in contact with the upper and lower grounding terminals due to the problems of elastic fatigue or deformation and the like of the elastic sheet, the grounding effect is poor, so that noise signals generated in the high-speed transmission process of the electric connector are not beneficial to be timely led out, the elasticity of the shielding sheet and the tongue plate are also required to be carefully protected when the shielding sheet and the tongue plate are embedded and formed, the elastic sheet is not damaged, in order to weaken the influence of the wood pile effect in the high-speed transmission, the elastic sheet is generally abutted to the contact part of the grounding terminal, and when the upper and lower grounding terminals are relatively close to each other, the upper and lower grounding terminals are relatively aligned, the upper and lower grounding terminals are required to be respectively abutted to the contact part of the upper and lower grounding terminals respectively, the shielding sheet is limited in area, the manufacturing difficulty of the upper and lower elastic sheet is high in the process of forming the shielding sheet, the contact part of the shielding sheet can not be guaranteed, and the contact part of the grounding terminals can not be guaranteed, so that the wood pile effect is difficult to be improved, and the impact of the elasticity of the shielding sheet and the electric connector can be hard to reach the contact part of the contact part between the two grounding terminals when the two grounding terminals and the adjacent grounding terminals and the two grounding terminals are relatively poor in the contact structure when the strength are relatively close to the contact between the two grounding terminals.

Therefore, there is a need to design an improved electrical connector to solve the above-mentioned problems.

[ utility model ]

The utility model aims to solve the problems of the prior art and provides an electric connector which is welded on a main body part of a shielding sheet through a plurality of guide connectors, is in one-to-one correspondence with a plurality of grounding terminals and is abutted against the main body part to eliminate resonance, has a simple structure, has no broken hole in the main body part and has a grounding assembly with good structural strength.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an electrical connector comprising: an insulating body including a base and a tongue plate extending forward from the base, a plurality of terminal grooves penetrating the base in a front-rear direction and extending to the tongue plate; the terminals are correspondingly accommodated in the terminal grooves, each terminal comprises a contact part exposed at one side of the tongue plate and a welding part exposed at the base part, and the terminals comprise a plurality of signal terminals and a plurality of grounding terminals; the grounding assembly is embedded in the insulating body and comprises a shielding sheet and a plurality of guide connectors fixed on the shielding sheet in a welding mode, the shielding sheet comprises a main body part embedded in the tongue plate and an extending part extending backwards from the main body part and embedded in the base part, the main body part is opposite to the contact parts, broken holes are not formed in the main body part, and the guide connectors are welded on at least one side of the main body part, located between the main body part and the grounding terminals and in one-to-one corresponding butt joint with the contact parts of the grounding terminals.

Further, the guide member extends rearward to the extension portion and is welded to the extension portion, and the extension portion is not perforated.

Further, the contact portion is in a horizontal plate shape, the guide member is a strip-shaped metal member, a surface of one side of the guide member is welded with the main body portion and the extension portion, a surface of the other side of the guide member opposite to the guide member is in planar contact with the contact portion of the ground terminal, the front end of the guide member extends forward beyond the front end of the contact portion of the ground terminal, the guide member abuts against the front end of the contact portion of the ground terminal, and the rear end of the guide member extends backward beyond the rear end of the contact portion.

Further, at least two grounding terminals are respectively located on the upper side and the lower side of the tongue plate and aligned along the up-down direction, and at least two guiding and connecting pieces are respectively welded on the upper side and the lower side of the same position of the main body part and are abutted to the contact parts of the corresponding two grounding terminals.

Further, each of the terminals includes a fixing portion located between the contact portion and the soldering portion, the plurality of ground terminals includes at least one first ground terminal, the fixing portion of the first ground terminal is located at the same level as the contact portion, the plurality of conductive members includes at least one first conductive member continuously soldered to the same side of the main body portion and the extension portion, and the first conductive member continuously abuts the contact portion and the fixing portion of the first ground terminal.

Further, the plurality of ground terminals include a plurality of the first ground terminals and a plurality of the second ground terminals, the contact portion and the fixing portion of the second ground terminals are located at different horizontal planes, the plurality of the conductive members include a plurality of the first conductive members corresponding to the plurality of the first ground terminals, and a plurality of the second conductive members corresponding to the plurality of the second ground terminals, the length of the first conductive members is greater than the length of the second conductive members, the second conductive members abut the contact portion of the second ground terminals, and a metal plate electrically abuts the fixing portion of the second ground terminals.

Further, the front end of the first guide member protrudes forward beyond the front end of the main body, the rear end of the first guide member protrudes rearward beyond the rear end of the extension portion and is adjacent to the insertion opening of the terminal slot, and the rear end surface of the first guide member is inclined toward a surface away from the first ground terminal to form an inclined guide surface and is jointly guided with the inner wall surface of the insertion opening of the terminal slot to be inserted.

Further, the shielding sheet and the metal plate are partially overlapped in the vertical direction, the shielding sheet and the metal plate jointly shield the contact portion and the fixing portion of the second grounding terminal, the fixing portion of the second grounding terminal is located between a plurality of second guide connectors and the metal plate in the vertical direction, and the metal plate is provided with a plurality of elastic sheets to correspondingly abut against the fixing portion of the second grounding terminal.

Further, a plurality of the terminal grooves extend from the base to both upper and lower sides of the tongue plate to be formed into upper and lower two rows, a plurality of the first ground terminals are assembled from rear to front to the terminal grooves of the lower row, each of the first conductive members is exposed in the terminal grooves of the corresponding lower row and abuts the first ground terminal from the front end of the contact portion of the first ground terminal until continuously extending to and abutting the fixing portion, a receiving cavity is recessed from the rear end of the base to communicate with the plurality of the terminal grooves of the upper row, a plurality of the second ground terminals are fixed to an insulating fixing block and assembled with the insulating fixing block to the receiving cavity, the contact portions of the second ground terminals pass through the receiving cavity to enter the plurality of the terminal grooves of the upper row, each of the second conductive members is exposed upward in the terminal grooves of the upper row and continuously abuts the rear end of the second ground terminal from the contact portion of the second ground terminal.

Further, a part of the fixing portions of the plurality of second ground terminals are covered and fixed by the insulating fixing block, the other part of the fixing portions of the second ground terminals is positioned at the front side of the insulating fixing block and is abutted against the top wall surface of the terminal groove, and the lower surface of the contact portion of the second ground terminal is abutted against the second conductive member.

Further, each of the terminals includes a vertical portion extending from one end of the fixing portion away from the contact portion by bending downward, the welding portion extends horizontally from the vertical portion, the vertical portion of the second ground terminal is located on the same vertical plane as two vertical portions of at least two of the signal terminals and is covered with the insulating fixing block, the insulating fixing block includes a first portion covering the vertical portion of the signal terminal, and a second portion covering the vertical portion of the second ground terminal, and a thickness of the first portion is smaller than a thickness of the second portion in a front-rear direction.

Further, the terminals are exposed on the upper side and the lower side of the tongue plate, the terminals located on the lower side comprise a plurality of differential signal terminals for transmitting differential signals, the terminals located on the upper side comprise a plurality of other terminals for transmitting non-differential signals, at least one avoidance portion is concavely arranged on the contact portion of the differential signal terminals and/or the fixing portion of the differential signal terminals from the lower surface of the shielding sheet, the lower side face of the avoidance portion is concaved in the direction away from the differential signal terminals, and the upper side face of the avoidance portion is concaved in the direction close to the other terminals.

Compared with the prior art, the utility model has the following beneficial effects: the grounding component is embedded in the insulating body, the grounding component comprises a shielding sheet and a plurality of grounding terminals, the plurality of grounding terminals are welded and fixed on the shielding sheet, the shielding sheet comprises a main body part embedded in the tongue plate, the main body part and the plurality of grounding terminals are just opposite to each other, the main body part can shield one side of the signal terminals, the plurality of grounding terminals are welded with one side of the main body part, the structure is simple, the plurality of grounding terminals are positioned between the main body part and the plurality of grounding terminals and are in one-to-one correspondence with the plurality of grounding terminals and are in butt joint, so that the resonance is eliminated, the main body part is not required to be in butt joint with the grounding terminals by a broken hole forming elastic sheet, the main body part is not provided with a broken hole, the integrity of the main body part is enhanced, the shielding performance is improved, the signal leakage performance is effectively improved, the signal leakage is avoided from the main body part to the position of the grounding terminals, the signal pile is prevented from being in the position of the contact terminal, the signal pile is prevented from being more easily damaged, the signal pile is more effectively prevented from being leaked, the signal is more easily connected with the grounding terminals, the signal pile is more effectively prevented from being connected with the signal pile is more easily, and the signal is more easily connected with the signal conductor.

[ description of the drawings ]

Fig. 1 is an exploded perspective view of a first embodiment of an electrical connector according to the present utility model;

fig. 2 is a perspective view of a first embodiment of an electrical connector according to the present utility model;

FIG. 3 is a schematic top view of a first embodiment of the electrical connector of the present utility model;

FIG. 4 is a schematic cross-sectional view taken along the direction A-A in FIG. 3;

FIG. 5 is a schematic cross-sectional view taken along the B-B direction in FIG. 3;

FIG. 6 is a schematic cross-sectional view taken along the direction C-C in FIG. 3;

FIG. 7 is a schematic cross-sectional view taken along the direction D-D in FIG. 3;

FIG. 8 is a schematic cross-sectional view taken along the direction E-E in FIG. 3, and a partially enlarged schematic illustration;

FIG. 9 is an exploded perspective view of a grounding assembly according to a first embodiment of the present utility model;

fig. 10 is a partial cross-sectional view of a second embodiment of the electrical connector of the present utility model.

Reference numerals of the specific embodiments illustrate:

[ detailed description ] of the utility model

For a better understanding of the utility model with objects, structures, features, and effects, the utility model will be described further with reference to the drawings and to the detailed description.

As shown in fig. 1 to 4, the insulating body 1 includes the base 11 and the tongue plate 12, a plurality of terminal slots 13 penetrate the base 11 in the front-rear direction and extend to the upper and lower sides of the tongue plate 12 to form two upper and lower rows, the upper side of the tongue plate 12 is protruded to form a convex rib, the plurality of terminal slots 13 of the upper row are divided into a part located at the convex rib and two other parts located at the two sides of the convex rib respectively, and a receiving cavity 111 is concavely provided from the rear end of the base 11 forward and communicated with the plurality of terminal slots 13 of the upper row in the front-rear direction so as to facilitate the subsequent assembly of the plurality of terminals 2 of the upper row, and the plurality of terminal slots 13 of the lower row are formed into a plurality of parallel rows.

As shown in fig. 1 to 6, each of the terminals 2 includes a contact portion 21 exposed at one side of the tongue plate 12, a soldering portion 24 exposed at the insulating body 1, and a fixing portion 22 located between the contact portion 21 and the soldering portion 24, wherein one end of the fixing portion 22 is connected to the contact portion 21, and a vertical portion 23 is bent downward from one end of the fixing portion 22 away from the contact portion 21, and the soldering portion 24 is horizontally extended via the vertical portion 23. The terminals 2 are correspondingly accommodated in the terminal slots 13 and are formed in two rows, the terminals 2 of the upper and lower rows are different in assembly mode, shape and function, the terminals 2 of the lower row are directly assembled in the terminal slots 13 of the lower row from back to front, the fixing parts 22 of the terminals 2 of the lower row are positioned on the same horizontal plane with the contact parts 21, the terminals 2 of the lower row are a plurality of first differential signal terminals S1 and a plurality of first grounding terminals G1 for transmitting high-speed differential signals, the terminals 2 of the upper row are fixed to an insulating fixing block 3 and assembled in the accommodating cavity 111 together with the insulating fixing block 3, a part of the fixing parts 22 of the terminals 2 of the upper row and the vertical parts 23 thereof are covered by the insulating fixing block 3, the other part of the fixing parts 22 of the terminals 2 of the upper row is positioned in front of the insulating fixing block 3 and is abutted against the top wall surface of the terminal groove 13, the fixing parts 22 of the terminals 2 of the upper row and the contact parts 21 thereof are positioned at different horizontal planes, the fixing parts 22 of the terminals 2 of the upper row are positioned at higher positions than the contact parts 21 thereof, four second differential signal terminals S2 and three second ground terminals G2 for transmitting high-speed differential signals are arranged in the 7pin terminal group of the terminals 2 of the upper row, the insulating fixing block 3 comprises a first part 31 coated on the vertical parts 23 of the second differential signal terminals S2, a second part 32 coated on the vertical parts 23 of the second ground terminals G2, the thickness of the first part 31 is smaller than that of the second part 32 along the front-rear direction, by the glue reducing arrangement, the air around the vertical portion 23 of the second differential signal terminal S2 is relatively increased, the relative dielectric constant is reduced, so that the capacitance is reduced, the impedance at the vertical portion 23 of the second differential signal terminal S2 is improved, the impedance of the whole second differential signal terminal S2 is continuous, the electric connector 100 obtains high-frequency transmission, a plurality of terminals 2 in the 6pin terminal group and the 15pin terminal group are a plurality of other terminals P for transmitting non-differential signals (such as a power supply and the like), part of the other terminals P in the 6pin terminal group and the 15pin terminal group are opposite to a plurality of first differential signal terminals S1 in the lower row along the up-down direction, and the second ground terminal G2 in the 7pin terminal group is staggered with the first ground terminal G1 in the lower row along the up-down direction.

As shown in fig. 1, 4 to 9, the grounding assembly 4 includes a plate-shaped shielding plate 41, and a plurality of conductors 42 welded and fixed to the shielding plate 41, the shielding plate 41 includes a main body portion 411 embedded in the tongue plate 12, and an extension portion 412 extending rearward from the main body portion 411 and embedded in the base 11, the main body portion 411 is opposite to the plurality of contact portions 21 and located between the plurality of contact portions 21 of the plurality of terminals 2 in the up-down direction, the cross talk between the plurality of second differential signal terminals S2 of the 7pin terminal group located on the upper side of the tongue plate 12 and the plurality of first differential signal terminals S1 of the 40pin terminal group located on the lower side of the tongue plate 12 is reduced, the mutual inductance 411 between the second differential signal terminals S2 on the upper side and the first differential signal terminals S1 is suppressed, the main body portion 411 is opposite to the plurality of contact portions 21, the main body portion is provided with the plurality of differential signal terminals being held in the up-down direction between the plurality of contact portions 21, the plurality of differential signal terminals S2 are further opened, the cross talk between the plurality of second differential signal terminals S2 is prevented from being broken, the second differential signal terminals S2 are further separated from the plurality of differential signal terminals S1, and the signal terminals S1 are further separated from the plurality of differential signal terminals are further separated from each other, and the signal terminals S1 are further separated from each other, and the signal line is prevented from being continuously broken, and the signal line is prevented from being broken. And because a part of the first differential signal terminals S1 in the 40pin terminal group is opposite to the other terminals P in the 6pin terminal group and the 15pin terminal group along the up-down direction, a plurality of avoidance portions 413 are concavely arranged from the lower surface of the shielding sheet 41 to the contact portion 21 of the part of the first differential signal terminals S1 and/or the fixing portion 22 of the part of the first differential signal terminals S1, the lower side surface of the avoidance portions 413 is concavely arranged along the direction away from the part of the first differential signal terminals S1, and the upper side surface of the avoidance portions 413 is convexly arranged along the direction approaching to the other terminals P, so that the distance between the shielding sheet 41 and the first differential signal terminals S1 is increased, the capacitance C is reduced, and the impedance at the contact portion 21 of the first differential signal terminals S1 or the fixing portion 22 of the first differential signal terminals S1 is improved, so that the overall impedance of the first differential signal terminals S1 is continuous, and the high-frequency transmission of the electrical connector 100 is facilitated. The plurality of conductive members 42 are strip-shaped metal members and are welded and fixed on the main body 411 and the extension part 412 by spot welding, the structure is simple, the conductive members 42 are firmly combined with the shielding plate 41, so that the grounding assembly 4 is not easy to displace in the process of insert molding with the insulating body 1, the spot welding positions of the conductive members 42 and the shielding plate 41 can be selectively formed on the surface of the conductive members 42 or the surface of the shielding plate 41, the plurality of conductive members 42 are positioned between the main body 411 and the plurality of grounding terminals G and are in butt joint with the plurality of grounding terminals G one by one, one side surface of the conductive members 42 is welded with the main body 411 and the extension part 412, the other side surface opposite to the conductive members 42 is in plane contact with the contact parts 21 of the grounding terminals G corresponding to the conductive members 42, the resonance is eliminated by the contact parts 21 of the grounding terminals G being horizontally arranged, the common potential of the grounding terminals G is achieved, the plane contact mode has larger contact area and more stable contact effect than the point contact mode of the traditional spring plate, the front end of the guide piece 42 extends forward beyond the contact parts 21 of the grounding terminals G, the rear end of the guide piece 42 extends backward beyond the contact parts 21 of the grounding terminals G, the guide piece 42 can continuously contact on the whole contact parts 21 of the grounding terminals G, the resonance peak value is effectively reduced, the guide piece 42 extends forward beyond the front end of the contact parts 21 of the grounding terminals G and can be abutted against the front end of the contact parts 21 of the grounding terminals G, so that the part of the ground terminal G located at the front end of the contact portion 21 is also turned on, thereby reducing open reflection to reduce resonance and avoiding the problem that the part of the ground terminal G located at the front end of the contact portion 21 interferes with the plurality of signal terminals S. And because of the difference between the first ground terminal G1 and the second ground terminal G2, the plurality of conductive members 42 include a plurality of first conductive members 421 corresponding to the plurality of first ground terminals G1, and a plurality of second conductive members 422 corresponding to the plurality of second ground terminals G2, the length of the first conductive members 421 is longer than the length of the second conductive members 422, the plurality of first conductive members 421 are continuously welded to the same side of the body portion 411 and the extension portion 412, and the first conductive members 421 are exposed in the corresponding terminal grooves 13 and continuously abut the contact portions 21 and the fixing portions 22 of the first ground terminals G1, increasing the ground return path of the first ground terminals G1 to reduce the resonance strength, the first conductive member 421 extends forward beyond the front end of the main body 411, the first conductive member 421 extends rearward beyond the rear end of the extension 412, the position of the first conductive member 421 abutting against the first ground terminal G1 is not limited by the length of the shielding plate 41, and therefore the first conductive member 421 is more flexible than the conventional hole-breaking elastic sheet, and the abutting surface is larger, and the rear end of the first conductive member 421 is adjacent to the insertion opening of the terminal slot 13, and the rear end of the first conductive member 421 is inclined towards the surface of the first ground terminal G1 to form an inclined guiding surface 4211 for guiding the first ground terminal G1 to be assembled into the terminal slot 13 together with the inner wall surface of the insertion opening of the terminal slot 13; the second conductive members 422 are exposed in the corresponding terminal grooves 13 and continuously contact the contact portions 21 of the entire second ground terminals G2, and the contact portions 21 and the fixing portions 22 of the second ground terminals G2 can be contacted with the top wall surfaces of the terminal grooves 13, so that the contact portions 21 of the second ground terminals G2 can be closely contacted with the second conductive members 422, a metal plate 5 is added to the upper side of the insulating fixing block 3, the shielding pieces 41 and the metal plate 5 are partially overlapped in the vertical direction, the shielding pieces 41 and the metal plate 5 jointly shield the contact portions 21 and the fixing portions 22 of the second ground terminals G2, the second ground terminals G2 are positioned between the plurality of second conductive members 422 and the metal plate 5 in the vertical direction, the metal plate 5 is not contacted with the plurality of metal plates 2, and the metal plate 5 is fixed to the second ground terminals G2 by the metal plate 2, and the plurality of conductive members are not contacted with the metal plate 2, and the metal plate 5 is fixed to the second ground terminals G2 by the metal plate 2, and the metal plate 2 is contacted with the contact portions of the metal plate 2, and the metal plate 2 is not contacted with the contact portions 2, and the metal plate 2 is continuously contacted with the metal plate 2.

As shown in fig. 10, in the second embodiment of the electrical connector 100 according to the present utility model, the difference from the first embodiment is that the first ground terminal G1 and the second ground terminal G2 are aligned in the vertical direction, and the corresponding first conductive pieces 421 and second conductive pieces 422 are welded on the upper and lower sides of the same position of the main body 411 and respectively contact with the contact portion 21 of the first ground terminal G1 and the contact portion 21 of the second ground terminal G2, so that the manner of welding the conductive pieces 42 is more flexible than the conventional manner of breaking holes in the main body 411, and the structure is simple, and the positions of the conductive pieces 42 are not limited by the area of the main body 411, so that two conductive pieces 42 can be simultaneously arranged on the same position of the main body 411 near the contact portion 21, so that the first ground terminal G1 and the second ground terminal G2 on the upper and lower sides of the tongue plate 12 can also achieve high-frequency resonance cancellation of the electrical connection of the resonant connector 41.

In summary, the electrical connector 100 of the present utility model has the following advantages:

1. the grounding component 4 is embedded in the insulating body, the grounding component 4 comprises the shielding sheet 41 and a plurality of conductive connectors 42 fixedly welded on the shielding sheet 41, the shielding sheet 41 comprises a main body part 411 embedded on the tongue plate 12, the main body part 411 and a plurality of contact parts 21 of the terminals 2 are opposite to each other, the main body part 411 can be shielded on one side of a plurality of signal terminals S, the plurality of conductive connectors 42 are welded on one side of the main body part 411, the structure is simple, the plurality of conductive connectors 42 are positioned between the main body part 411 and the plurality of grounding terminals G and are in one-to-one correspondence with the plurality of grounding terminals G and are abutted to each other, so that the plurality of grounding terminals G reach common potential, resonance is eliminated, the main body part 411 is not required to be in contact with the grounding terminals G through a hole forming elastic sheet, the main body part 411 is not provided with a hole, the main body part is kept in one side of the signal terminals S, the plurality of conductive connectors are welded on one side of the main body part 411, the signal terminals S is not provided with the conductive connectors, the signal conductors are not in contact with the main body part S, the high-frequency connector is better, the signal conductors are prevented from being broken, the signal conductors are not in the contact terminals are in the same place, the contact part is better, the signal conductors are not in contact with the contact terminals are connected with the main body part, the signal conductors are not in the contact terminals, the signal conductors are in the contact with the contact part, the signal conductors are in the contact connector is in the contact with the contact connector, and the signal conductors, the signal conductors are in the contact connector is in the contact with a common potential, and the electric potential is in a mode.

2. The guide piece 42 extends to the extending portion 412 and is welded to the extending portion 412, so that a welding point between the guide piece 42 and the shielding piece 41 is increased, the combination of the guide piece 42 and the shielding piece 41 is firmer, the problem that the contact between the guide piece 42 and the ground terminal G is unstable due to displacement of the guide piece 42 in the insert molding process of the ground component 4 and the insulating body 1 is avoided, and the extending portion 412 is not perforated, so that the shielding piece 41 can continuously shield from the contact portion 21 of the signal terminal S to the fixing portion 22 of the signal terminal S in the base 11, and a complete shielding effect of the signal terminal S is achieved.

3. The contact portion 21 is in a horizontal plate shape, the surface on one side of the guide member 42 is welded to the main body 411 and the extension portion 412, the surface on the other side opposite to the guide member 42 is in plane contact with the contact portion 21 of the ground terminal G, the plane contact mode has a larger contact area and a more stable contact effect than the point contact mode of the existing spring sheet, the front end of the guide member 42 extends forward beyond the front end of the contact portion 21 of the ground terminal G, the rear end of the guide member 42 extends backward beyond the rear end of the contact portion 21, the guide member 42 can be abutted on the whole contact portion 21 of the ground terminal G, and the guide member 42 is abutted on the front end of the contact portion 21 of the ground terminal G, so that the portion of the ground terminal G at the front end of the contact portion 21 is also conducted, the open reflection is reduced, and the problem of the signal S caused by the portion of the ground terminal G at the front end of the contact portion 21 of the ground terminal G is avoided.

4. At least two grounding terminals G are respectively located on the upper and lower sides of the tongue plate 12 and aligned along the up and down direction, at least two conductive connectors 42 are respectively welded on the upper and lower sides of the same position of the main body 411 and abut against the contact portions 21 of the corresponding two grounding terminals G, the positions of the conductive connectors 42 are more flexible than the existing mode of breaking hole forming shrapnel on the main body 411 by welding the conductive connectors 42, and the structure is simple, and the positions of the conductive connectors 42 are not limited by the area of the main body 411, so that two conductive connectors 42 can be simultaneously arranged on the same position of the main body 411 close to the contact portions 21, and the upper and lower grounding terminals G located on the upper and lower sides of the tongue plate 12 are electrically connected through the shielding sheets 41 and the conductive connectors 42 to achieve resonance elimination by equipotential.

5. The fixing portion 22 and the contact portion 21 of the first ground terminal G1 are located at the same horizontal plane, the first conductive member 421 is continuously welded on the same side of the main body portion 411 and the extension portion 412, and the first conductive member 421 continuously abuts against the contact portion 21 and the fixing portion 22 of the first ground terminal G1, so that the contact portion 21 and the fixing portion 22 of the first ground terminal G1 can obtain the same electric potential as far as possible, and the manner of continuously abutting the contact surface further increases the ground return path of the first ground terminal G1 compared with the manner of the conventional spring point contact, so that the resonance peak of the first ground terminal G1 is reduced, the resonance is reduced, and the frequency band where the resonance peak occurs is advantageously shifted back as far as possible beyond the high frequency of the electric connector 100.

6. The plurality of conductive members 42 include a plurality of first conductive members 421 corresponding to the plurality of first ground terminals G1 and a plurality of second conductive members 422 corresponding to the plurality of second ground terminals G2, the first conductive members 421 having a length greater than that of the second conductive members 422, andthe saidThe contact portion 21 and the fixing portion 22 of the second ground terminal G2 are located at different horizontal planes, and the second conductive member 422 abuts against the contact portion 21 of the second ground terminal G2 for the second ground terminal G2 having a different shape from the first ground terminal G1, and electrically abuts against the fixing portion 22 of the second ground terminal G2 through the metal plate 5 to increase the ground return path of the second ground terminal G2 as well, thereby reducing resonance.

7. The front end of the first conductive member 421 extends forward beyond the front end of the main body 411, compared with the conventional manner of forming the spring sheet by breaking holes, the contact position between the first conductive member 421 and the first ground terminal G1 is not limited by the length of the shielding plate 41, the contact area between the first conductive member 421 and the first ground terminal G1 is larger, so that the ground return path is advantageously increased, the rear end of the first conductive member 421 extends rearward beyond the rear end of the extension portion 412 and is adjacent to the insertion opening of the terminal slot 13, and the rear end of the first conductive member 421 is inclined toward the surface of the first ground terminal G1 to form an inclined guide surface 4211 and guide the insertion of the first ground terminal G1 together with the inner wall surface of the insertion opening of the terminal slot 13.

7. The shielding piece 41 and the metal plate 5 are partially overlapped along the up-down direction to further ensure the integrity of the shielding effect, the shielding piece 41 and the metal plate 5 jointly shield the contact portion 21 and the fixing portion 22 of the second ground terminal G2, the second ground terminal G2 is located between the plurality of second conductive connectors 422 and the metal plate 5 along the up-down direction, and the metal plate 5 is provided with a plurality of elastic pieces 51 to correspondingly abut against the fixing portion 22 of the second ground terminal G2, so that the reflow path of the second ground terminal G2 is increased, and resonance is eliminated.

8. A part of the fixing portion 22 of the plurality of second ground terminals G2 is covered and fixed by the insulating fixing block 3, another part of the fixing portion 22 of the second ground terminal G2 is located at the front side of the insulating fixing block 3, the upper surface of the fixing portion 22 abuts against the top wall surface of the terminal groove 13, the lower surface of the contact portion 21 of the second ground terminal G2 abuts against the second conductive member 422, and the fixing portion 22 of the second ground terminal G2 can be pressed downward by the insulating body and conducted to the adjacent contact portion 21, so that the lower surface of the contact portion 21 of the second ground terminal G2 abuts against the second conductive member 422 more tightly and more stably.

9. Each of the terminals 2 includes the vertical portion 23 extending from one end of the fixing portion 22 away from the contact portion 21 by being bent downward, the welding portion 24 extends horizontally from the vertical portion 23, the vertical portion 23 of the second ground terminal G2 is located on the same vertical plane as the two vertical portions 23 of the at least two signal terminals S and is covered with the insulating fixing block 3 together, the insulating fixing block 3 includes the first portion 31 covering the vertical portion 23 of the signal terminal S, and the second portion 32 covering the vertical portion 23 of the second ground terminal G2, and the thickness of the first portion 31 is smaller than the thickness of the second portion 32 in the front-rear direction, the air around the vertical portion 23 of the signal terminal S is increased by the glue reducing arrangement, the relative dielectric constant is reduced, and the capacitance is reduced, so that the impedance at the vertical portion 23 of the signal terminal S is improved, and the overall impedance of the signal terminal S is facilitated to be obtained, thereby facilitating the overall high-frequency connection 100.

10. The terminals 2 are exposed on the upper and lower sides of the tongue plate 12, the terminals 2 on the lower side include a plurality of differential signal terminals S1 for transmitting differential signals, the terminals 2 on the upper side include a plurality of other terminals P for transmitting non-differential signals, at least one avoiding portion 413 is concavely provided from the lower surface of the shielding plate 41 to the contact portion 21 of the differential signal terminal S1 and/or the fixing portion 22 of the differential signal terminal S1, the lower side surface of the avoiding portion 413 is concaved in a direction away from the differential signal terminal S1, and the upper side surface of the avoiding portion 413 is protruded in a direction close to the other terminals P, so that the distance between the shielding plate 41 and the differential signal terminal S1 is increased, the capacitance is reduced, the impedance of the contact portion 21 of the differential signal terminal S1 and/or the fixing portion 22 of the differential signal terminal S1 is increased, and the overall impedance of the differential signal terminal S1 is continuous, and the high frequency connector 100 is facilitated.

The above detailed description is merely illustrative of the preferred embodiments of the utility model and is not intended to limit the scope of the utility model, so that all equivalent technical changes that can be made by the present specification and illustrations are included in the scope of the utility model.

Claims (12)

1. An electrical connector, comprising:

an insulating body including a base and a tongue plate extending forward from the base, a plurality of terminal grooves penetrating the base in a front-rear direction and extending to the tongue plate;

the terminals are correspondingly accommodated in the terminal grooves, each terminal comprises a contact part exposed at one side of the tongue plate and a welding part exposed at the base part, and the terminals comprise a plurality of signal terminals and a plurality of grounding terminals;

the grounding assembly is embedded in the insulating body and comprises a shielding sheet and a plurality of guide connectors fixed on the shielding sheet in a welding mode, the shielding sheet comprises a main body part embedded in the tongue plate and an extending part extending backwards from the main body part and embedded in the base part, the main body part is opposite to the contact parts, broken holes are not formed in the main body part, and the guide connectors are welded on at least one side of the main body part, located between the main body part and the grounding terminals and in one-to-one corresponding butt joint with the contact parts of the grounding terminals.

2. The electrical connector of claim 1, wherein: the guide piece extends backwards to the extension part and is welded with the extension part, and the extension part is not perforated.

3. The electrical connector of claim 1, wherein: the contact part is in a horizontal plate shape, the guide connector is a strip-shaped metal part, the surface of one side of the guide connector is welded with the main body part and the extension part, the surface of the other side of the guide connector opposite to the contact part of the grounding terminal is in plane contact, the front end of the guide connector forwards exceeds the front end of the contact part of the grounding terminal, the guide connector is abutted to the front end of the contact part of the grounding terminal, and the rear end of the guide connector backwards exceeds the rear end of the contact part.

4. The electrical connector of claim 1, wherein: at least two grounding terminals are respectively positioned on the upper side and the lower side of the tongue plate and aligned along the upper and the lower directions, and at least two guide connectors are respectively welded on the upper side and the lower side of the same position of the main body part and are abutted to the contact parts of the corresponding two grounding terminals.

5. The electrical connector of claim 1, wherein: each terminal comprises a fixing part positioned between the contact part and the welding part, a plurality of grounding terminals comprise at least one first grounding terminal, the fixing parts of the first grounding terminals and the contact part are positioned on the same horizontal plane, a plurality of guide connectors comprise at least one first guide connector which is continuously welded on the same side of the main body part and the extending part, and the first guide connectors are continuously abutted against the contact part and the fixing part of the first grounding terminal.

6. The electrical connector of claim 5, wherein: the plurality of grounding terminals comprise a plurality of first grounding terminals and a plurality of second grounding terminals, the contact part and the fixing part of the second grounding terminals are positioned on different horizontal planes, the plurality of guide connectors comprise a plurality of first guide connectors corresponding to the plurality of first grounding terminals and a plurality of second guide connectors corresponding to the plurality of second grounding terminals, the length of the first guide connectors is larger than that of the second guide connectors, the second guide connectors are abutted against the contact part of the second grounding terminals, and a metal plate is abutted against the fixing part of the second grounding terminals.

7. The electrical connector of claim 6, wherein: the front end of the first guide piece extends forward beyond the front end of the main body part, the rear end of the first guide piece extends backward beyond the rear end of the extension part and is adjacent to the insertion port of the terminal slot, and the rear end surface of the first guide piece is obliquely arranged towards the surface far away from the first grounding terminal to form an inclined guide surface and is jointly guided with the inner wall surface of the insertion port of the terminal slot to be inserted into the first grounding terminal.

8. The electrical connector of claim 6, wherein: the shielding sheet and the metal plate are partially overlapped along the up-down direction, the shielding sheet and the metal plate jointly shield the contact part and the fixing part of the second grounding terminal, the fixing part of the second grounding terminal is positioned between a plurality of second guide connectors and the metal plate along the up-down direction, and the metal plate is provided with a plurality of elastic sheets to correspondingly abut against the fixing part of the second grounding terminal.

9. The electrical connector of claim 6, wherein: the plurality of terminal grooves extend from the base to the upper and lower sides of the tongue plate to be formed into upper and lower two rows, the plurality of first ground terminals are assembled from rear to front to the plurality of terminal grooves of the lower row, each of the first conductive pieces is exposed in the terminal groove of the corresponding lower row and abuts against the first ground terminal from the front end of the contact portion of the first ground terminal until continuously extending to the fixing portion and abutting against the fixing portion, a receiving cavity is recessed from the rear end of the base and communicates with the plurality of terminal grooves of the upper row, the plurality of second ground terminals are fixed to an insulating fixing block and assembled with the insulating fixing block to the receiving cavity, the contact portions of the plurality of second ground terminals pass through the receiving cavity to enter the plurality of terminal grooves of the upper row, each of the second conductive pieces is exposed upward in the terminal groove of the upper row and abuts against the front end of the contact portion of the second ground terminal.

10. The electrical connector of claim 9, wherein: and one part of the fixing parts of the second grounding terminals are covered and fixed by the insulating fixing blocks, the other part of the fixing parts of the second grounding terminals are positioned at the front sides of the insulating fixing blocks and are abutted against the top wall surfaces of the terminal grooves, and the lower surfaces of the contact parts of the second grounding terminals are abutted against the second guide pieces.

11. The electrical connector of claim 9, wherein: each terminal comprises a vertical part which is bent downwards from one end of the fixing part far away from the contact part, the welding part horizontally extends from the vertical part, the vertical part of the second grounding terminal and two vertical parts of at least two signal terminals are positioned on the same vertical surface and are jointly covered by the insulating fixing block, the insulating fixing block comprises a first part which covers the vertical part of the signal terminal, and a second part which covers the vertical part of the second grounding terminal, and the thickness of the first part is smaller than that of the second part along the front-rear direction.

12. The electrical connector of claim 5, wherein: the terminals are exposed on the upper side and the lower side of the tongue plate, the terminals located on the lower side comprise a plurality of differential signal terminals for transmitting differential signals, the terminals located on the upper side comprise a plurality of other terminals for transmitting non-differential signals, at least one avoidance portion is concavely arranged on the contact portion of the differential signal terminals and/or the fixing portion of the differential signal terminals from the lower surface of the shielding sheet, the lower side face of the avoidance portion is concaved along the direction away from the differential signal terminals, and the upper side face of the avoidance portion is convexly arranged along the direction close to the other terminals.