CN112242636B

CN112242636B - Electrical connector

Info

Publication number: CN112242636B
Application number: CN201910693082.5A
Authority: CN
Inventors: 管世祺; 涂金益; 林宇骞
Original assignee: Lintes Tech Co Ltd
Current assignee: Lintes Tech Co Ltd
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2022-06-28
Anticipated expiration: 2039-07-18
Also published as: CN112242636A

Abstract

The invention discloses an electric connector, which is electrically connected with a first electric element, and comprises: an insulating body having a forwardly extending mating portion with a mating surface for mating with the first electrical component; a row of terminals fixed on the insulating body, each terminal having a contact part and a head part extending forwards from the contact part, the contact part being exposed on the butt-joint surface and electrically contacted with the first electrical element in the up-down direction, the row of terminals having at least one signal terminal; the grounding piece is provided with a main body part arranged on the butt joint surface, is positioned in front of the head part of the at least one signal terminal at intervals, extends downwards from the main body part to form a guide connection part, and penetrates through the butt joint part downwards to be grounded and conducted.

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 excellent high-frequency performance.

[ background of the invention ]

In a conventional electrical connector, a row of terminals is fixed in an insulative housing and each of the terminals has a contact arm extending forward to electrically contact with a mating component and a tail extending backward to be soldered to a circuit board, the row of terminals has a plurality of pairs of signal terminals and a plurality of ground terminals for transmitting high frequency signals, each pair of signal terminals has a ground terminal on both sides, the signal terminals transmit high frequency signals between the mating component and the circuit board, and the ground terminals are used for shielding the high frequency signals of the signal terminals to form a ground loop.

In order to ensure the mechanical performance of the terminal in the prior art, the terminal usually extends forward from the contact portion to form a head portion, the extending direction of the head portion is opposite to the electrical signal transmission path of the signal terminal, and since the head portion also has a conductive function, a part of the high-frequency signal is transmitted to the head portion, and the part of the high-frequency signal is not transmitted out of the terminal, so that the head portion forms an invalid transmission path of the high-frequency signal. The invalid transmission paths of the two adjacent pairs of signal terminals will affect each other, and crosstalk is generated.

In order to reduce the mutual influence of the invalid transmission paths of two pairs of signal terminals, it is common practice for those skilled in the art to reduce the length of the invalid transmission paths, that is, the length of the header, but the mechanical performance of the terminals cannot be guaranteed while the length of the header is reduced, and when the mating element is mated with the contact arm, the contact arm cannot be easily damaged by sufficient mechanical performance, which is also detrimental to the high-frequency performance of the electrical connector.

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

[ summary of the invention ]

The invention aims to provide an electric connector with good signal transmission efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme: an electrical connector for electrically connecting a first electrical component, comprising: an insulating body having a forwardly extending mating portion with a mating surface for mating with the first electrical component; a row of terminals fixed to the insulating body, each of the terminals having a contact portion and a head portion extending forward from the contact portion, the contact portion being exposed at the mating surface and electrically contacting the first electrical component in the vertical direction, the row of terminals having at least one signal terminal therein; the grounding piece is provided with a main body part arranged on the butt joint surface, is positioned in front of the head part of at least one signal terminal at intervals, extends downwards from the main body part to form a guide connection part, penetrates through the butt joint part downwards and is used for grounding conduction.

Further, the grounding member has a convex portion, the convex portion is in grounding conduction with the first electrical component, and at least one convex portion and the conductive portion are arranged on the main body portion along the left-right direction.

Further, the grounding member has a plurality of convex portions and a plurality of lead portions, and the plurality of lead portions and the plurality of convex portions are alternately arranged at intervals in the left-right direction.

Further, the distance from each convex part to two adjacent guiding parts on two sides is different.

Further, the grounding member has a protrusion protruding toward the first electrical component in the up-down direction and electrically connected to the first electrical component, and the protrusion is located in front of the head of the at least one signal terminal.

Furthermore, the insulating body is further provided with a fixing part, the fixing part and the butt joint part are arranged at an interval from top to bottom, each terminal is provided with a positioning arm and fixed on the fixing part, a gap is formed between the positioning arm of the signal terminal and the front surface of the fixing part, and the gap is filled with air.

Furthermore, the electric connector further comprises a conductive cover, the conductive cover is arranged in front of the fixing part, the first electric element is positioned between the conductive cover and the butt joint part, the row of terminals comprises two grounding terminals and a pair of signal terminals, the pair of signal terminals are used for transmitting differential signals and are positioned between the two grounding terminals, the positioning arm of each grounding terminal extends forwards out of the front surface of the fixing part and is electrically communicated with the conductive cover, and the gap filled with air is positioned between the positioning arms of the two grounding terminals.

Furthermore, one row of the terminals has two ground terminals and a pair of the signal terminals, the pair of the signal terminals is used for transmitting differential signals and is located between the two ground terminals, the ground member has two extending portions, each extending portion is conducted with a corresponding one of the ground terminals, and therefore a ground shielding ring is formed in front of and on the left and right sides of the pair of the signal terminals.

In order to achieve the purpose, the invention adopts another technical scheme that: an electrical connector electrically connected to a first electrical component, comprising: an insulating body having a mating portion extending forward, the mating portion having a mating surface for mating with the first electrical component; a row of terminals fixed to the insulating body, each of the terminals having a contact portion exposed at the mating surface for electrically contacting the first electrical component, the row of terminals having at least one signal terminal and two ground terminals, at least one signal terminal being disposed between the two ground terminals; the grounding piece is provided with a main body part arranged on the butt joint surface and is arranged in front of the row of the terminals at intervals, the grounding piece is provided with two extending parts, and each extending part is in grounding conduction with one corresponding grounding terminal.

Further, each extension portion abuts against the lower portion of the corresponding ground terminal to form ground conduction, and a portion of the extension portion is located in front of the ground terminal.

Further, after the first electrical element is matched with the butting portion, the contact portion and the extending portion of the grounding terminal form grounding conduction through the first electrical element.

Furthermore, the grounding piece is provided with a guiding connection part which downwards penetrates through the butt joint part and is used for grounding conduction.

Further, the connecting portion is disposed in front of the ground terminal.

Further, the ground member has a plurality of convex portions and a plurality of conductive portions, and the plurality of conductive portions and the plurality of convex portions are alternately provided at intervals in the left-right direction.

Further, the distance from each convex part to two adjacent guide connection parts on two sides is different.

Furthermore, the electric connector further comprises a conductive cover, the conductive cover is arranged in front of the fixing portion, the first electric element is located between the conductive cover and the butt-joint portion, the row of terminals comprises two grounding terminals and a pair of signal terminals, the pair of signal terminals are used for transmitting differential signals and located between the two grounding terminals, the positioning arm of each grounding terminal extends forwards out of the front surface of the fixing portion and is electrically conducted with the conductive cover, and the gap filled with air is located between the positioning arms of the two grounding terminals.

Compared with the prior art, the embodiment has the grounding part arranged on the butt-joint surface, the grounding part has the main body part arranged in front of the head part of the signal terminal at intervals, so as to generate a shielding effect on an invalid high-frequency signal on the head part of the signal terminal, when the high-frequency signal of the first electrical element is transmitted with the signal terminal in the using process of the electric connector, a part of the signal loss can be caused, the lost signal exists in the surrounding medium of the terminal as an electromagnetic wave, the main body part arranged in front of the signal terminal can generate electric charge under the influence of the lost signal electromagnetic wave, if the electric charge of the part is not led out of the insulating body, the electric charge on the grounding part can form an interference electromagnetic wave, so as to generate influence on the signal terminal, the conducting part extends downwards from the main body part and penetrates through the butt-joint part downwards to be grounded, compared with the conducting part positioned outside the butt-joint part, the charges on the grounding piece are transmitted out of the insulating body in a shorter conduction path and a shorter time, so that the grounding piece is prevented from forming interference electromagnetic waves, and the shielding effect of the main body part on the signal terminal is influenced.

The extension part is arranged on the grounding part, the extension part is in grounding conduction with the contact part of the grounding terminal, no matter the extension part is in direct conduction or in indirect conduction through the first electrical element, charges on the grounding part can be led out of the insulating body through the grounding terminal, the grounding part is prevented from forming interference electromagnetic waves, and therefore the shielding effect of the main body part on the signal terminal is influenced.

[ description of the drawings ]

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

fig. 2 is a perspective assembly view of the electrical connector of the first embodiment of the present invention;

fig. 3 is a top view of the electrical connector of the first embodiment of the present invention;

FIG. 4 is a plan sectional view taken along A-A in FIG. 3;

FIG. 5 is a plan sectional view taken along B-B in FIG. 3;

FIG. 6 is a plan sectional view taken along C-C in FIG. 3;

Fig. 7 is a bottom view of the electrical connector of the first embodiment of the present invention;

fig. 8 is a perspective view of a terminal and ground member of an electrical connector according to a second embodiment of the present invention;

fig. 9 is a plan sectional view of an electrical connector according to a second embodiment of the present invention;

fig. 10 is a perspective view of a terminal and ground member of an electrical connector according to a third embodiment of the present invention;

fig. 11 is a plan sectional view of an electrical connector of a third embodiment of the present invention.

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.

Referring to fig. 1, fig. 2 and fig. 4, an electrical connector 100 according to a first embodiment of the present invention is configured to electrically connect a first electrical component 200 and a second electrical component (not shown), where the electrical connector 100 includes an insulating body 1, a row of terminals 2 arranged in a left-right arrangement is fixed on the insulating body 1 and is electrically connected to the first electrical component 200 upwards, a grounding member 3 is arranged in front of the row of terminals 2, two metal locking members 4 are fixed at left and right ends of the insulating body 1 and are located at two sides of the row of terminals 2, a conductive cover 5 is pivoted to the two metal locking members 4 and is pressed against the first electrical component 200 downwards, and the first electrical component 200 is located between the conductive cover 5 and the row of terminals 2.

Referring to fig. 1 and 4, the first electrical component 200 includes a dielectric main board 201, a first shielding plate 202 and a second shielding plate 203 are respectively disposed on upper and lower surfaces of the dielectric main board 201, a row of transmission plates are disposed between the first shielding plate 202 and the second shielding plate 203, one end of each transmission plate is exposed from the dielectric main board 201 to form a transmission end 204, and each transmission end 204 correspondingly contacts one of the terminals 2, so as to transmit signals.

Referring to fig. 1, 2 and 3, the insulating housing 1 has a pair of connecting portions 10 and a fixing portion 11 extending forward, the pair of connecting portions 10 and the fixing portion 11 are spaced up and down, and the pair of connecting portions 10 and the fixing portion 11 are disposed lengthwise in the left-right direction. The abutting portion 10 is composed of a first step portion 101 at the rear end, a second step portion 102 extending forward from the first step portion 101, and a third step portion 103 extending forward from the second step portion 102, the thicknesses of the first step portion 101, the second step portion 102, and the third step portion 103 decrease sequentially from the rear to the front, and the dimension of the forward extension of the fixing portion 11 does not exceed the first step portion 101. The abutting portion 10 has an abutting surface 104 formed by the upper surfaces of the first step portion 101, the second step portion 102, and the third step portion 103 in common. The insulating body 1 has a row of terminal slots 105, the terminal slots 105 extend through the first step portion 101 and the second step portion 102 from the rear end of the insulating body 1, the terminal slots 105 extend through the front surface of the second step portion 102, each terminal slot 105 forms an upward opening at a corresponding position of the mating surface 104, so that each terminal 2 is inserted into the terminal slot 105 from the rear to the front, and a portion of each terminal 2 is exposed to the mating surface 104 through the opening of the terminal slot 105 for electrically contacting with the corresponding transmission terminal 204.

Referring to fig. 3, 4 and 5, the grounding element 3 is disposed on the abutting surface 104 of the third step 103, a connecting groove 106 is concavely formed from the abutting surface 104 of the third step 103 to each terminal groove 105, the connecting groove 106 is connected to the corresponding terminal groove 105 backward and penetrates the front surface of the third step 103 forward, so that the terminal 2 is exposed on the front surface of the insulation body 1, the air in front of the insulation body 1 flows into the terminal groove 105 from the connecting groove 106 and then flows out of the rear of the insulation body 1 from the terminal groove 105, so that the air around the electrical connector 100 can flow back and forth through the interior of the electrical connector 100, which is beneficial to carrying away the heat generated by the operation of the electrical connector 100, and the thicknesses of the first step 101, the second step 102 and the third step 103 are different, the communicating groove 106 and the terminal groove 105 have different sizes in the vertical direction, so that the flowing speed of air is adjusted, the flowing of air is accelerated, heat inside the electric connector 100 is taken away, and the high-frequency performance is prevented from being influenced by overhigh temperature rise of the terminal 2. A plurality of guide grooves 107 are formed in the lower surface in an upward concave manner, and one guide groove 107 is correspondingly communicated with one communication groove 106. A portion of the grounding member 3 is located above the row of the communication slots 106, and another portion of the grounding member 3 is accommodated in the communication slot 106 and exposed out of the insulating body 1 through the guiding slot 107 to be in grounding conduction with the second electrical component (not shown).

Referring to fig. 3, 4 and 5, the fixing portion 11 has a row of fixing grooves 110 penetrating from front to back and located above a row of the terminal grooves 105, and each fixing groove 110 corresponds to each terminal groove 105 one by one. A portion of each terminal 2 is inserted into the fixing groove 110 from the back to the front and is in holding fit with the inner wall of the fixing groove 110, thereby fixing the terminal 2 to the insulating body 1.

Referring to fig. 1, 2 and 3, the insulating housing 1 has two end portions 12 extending forward and disposed parallel to each other, and each of the end portions 12 connects the fixing portion 11 and the abutting portion 10 up and down. The end portion 12 extends forward by a dimension equal to that of the abutting portion 10, so that the two end portions 12, the abutting portion 10 and the fixing portion 11 define an upwardly facing gap 13 for receiving the conductive cover 5.

Referring to fig. 1, 2 and 3, each row of the terminals 2 is stamped from the same metal plate, and each two adjacent terminals 2 are opposite to each other in a plate-to-plate manner. Each row of the terminals 2 has a plurality of signal terminals S and a plurality of ground terminals G, the signal terminals S are paired with each other, each pair of the signal terminals S is used for transmitting differential signals, and one ground terminal G is respectively disposed on each of the left and right sides of each pair of the signal terminals S.

Referring to fig. 1, 4 and 5, each of the terminals 2 has an intermediate portion 21, the intermediate portion 21 is fixed to the rear end of the insulating housing 1, a contact arm 22 and a positioning arm 23 are extended forward from the intermediate portion 21 at intervals, the positioning arm 23 is received and fixed in the fixing groove 110, the contact arm 22 is received in the mating portion 10, each of the contact arms 22 has a contact portion 220 and a head portion 221 extended forward from the contact portion 220, the contact portion 220 extends upward beyond the mating surface 104 to electrically contact with the corresponding transmission terminal 204, and both define a contact position a. The head portion 221 is a free end of the contact arm 22, the head portion 221 of this embodiment is defined as a portion disposed forward of the contact position a, and the head portion 211 is an ineffective transmission path of the terminal 2 opposite to the direction of signal transmission. The width of the head 221 is gradually reduced from back to front, thereby reducing the electromagnetic wave of the invalid signal on the head 221, which is beneficial to the transmission of high-frequency signals. In the present embodiment, each of the head portions 221 has one communication groove 106 in front thereof, and the terminal groove 105 is disposed in communication with the communication groove 106, so that the dielectric coefficient around the head portion 221 is reduced, thereby reducing the electromagnetic resonance between the two head portions 221 of the pair of signal terminals S, and facilitating the transmission of high-frequency signals.

Referring to fig. 1, 4 and 5, the positioning arm 23 of each ground terminal G extends forward to the fixing portion 11 and is exposed outside the insulating body 1 to be electrically connected to the conductive cover 5, the positioning arm 23 of each signal terminal S does not extend beyond the fixing groove 110 and has a gap b with the front surface of the fixing portion 11, the gap b is a portion of the fixing groove 110, and the gap b is filled with air.

Referring to fig. 1, 4 and 5, a tail portion 24 extends from the middle portion 21, and the tail portion 24 extends out of the insulating body 1 and is soldered to the second electrical component (not shown). The contact portion 220, the tail portion 24, and the intermediate portion 21 connecting the contact portion 220 and the tail portion 24 form an effective transmission path of the terminal 2, and the head portion 221 and the positioning arm 23 are an ineffective transmission path of the terminal 2. The gap b is formed between the positioning arm 23 of the signal terminal S and the front surface of the fixing portion 11, and the gap b is filled with air, so that the dielectric constant around the positioning arm 23 of the signal terminal S can be reduced, the impedance of the positioning arm 23 can be adjusted, the electromagnetic resonance between the two positioning arms 23 of a pair of signal terminals S can be reduced, the length of the positioning arm 23 can be reduced, the length of an invalid transmission path can be shortened, and the invalid signal electromagnetic wave transmitted to the positioning arm 23 can be reduced.

Referring to fig. 1, 4 and 5, the grounding piece 3 has a main body 30 mounted on the abutting surface 104 of the third step portion 103, the main body 30 is located in front of a row of the head portions 221, and is opposite to the row of the head portions 221 in the front-rear direction, so as to shield the invalid signal electromagnetic waves of the head portions 221 of the signal terminals S and prevent the invalid signal electromagnetic waves from affecting the high-frequency signal transmission of the adjacent pair of the signal terminals S.

Referring to fig. 4, 5 and 6, the grounding member 3 has a plurality of connecting portions 31 and a plurality of protrusions 32, the connecting portions 31 are formed by tearing the main body 30 and bent downward, each connecting portion 31 downwardly passes through a corresponding one of the connecting slots 106 and a corresponding one of the connecting slots 107, and is configured to extend out of the insulating body 1 to be in grounding connection with the second electrical component (not shown). In the process of using the electrical connector 100, when the first electrical component 200 performs signal transmission with the signal terminal S, a portion of the signal is lost, the partially lost signal exists in the surrounding medium of the terminal 2 as an electromagnetic wave, and the main body 30 provided in front of the signal terminal S generates an electric charge under the influence of the lost signal electromagnetic wave, if the charges are not conducted out of the insulating body 1, the charges on the grounding member 3 will form interfering electromagnetic waves, thereby affecting the signal terminals S, the connecting portion 31 of this embodiment penetrates the mating portion 10 downward for grounding, and is located outside the mating portion 10 compared to the connecting portion 31, the charges on the grounding member 3 are transmitted out of the insulating body 1 in a shorter conduction path and a shorter time, so as to avoid the grounding member 3 from forming interfering electromagnetic waves, thereby increasing the shielding effect of the main body portion 30 on the signal terminal S.

Referring to fig. 2, 3 and 6, the protrusion 32 is formed by tearing the main body 30 and protrudes upward to electrically contact the second shielding plate 203, and the charges on the second shielding plate 203 are transferred to the main body 30 through the protrusion 32 and then transferred to the second electrical component (not shown) through the conductive portion 31. The plurality of conductive portions 31 and the plurality of protruding portions 32 are alternately spaced apart in the left-right direction on the main body portion 30, the conductive portions 31 are located in front of the ground terminals G, the protruding portions 32 are located in front of the signal terminals S, a distance from each of the protruding portions 32 to the conductive portion on the adjacent side is L1, a distance from each of the protruding portions 32 to the conductive portion on the adjacent other side is L2, and the distance L1 is smaller than the distance L2. The plurality of protruding portions 32 are electrically connected to the second shielding plate 203, so that the second shielding plate 203 has a plurality of grounding paths, which is beneficial to guiding out the charges on the second shielding plate 203, each protruding portion 32 and each guiding portion 31 are adjacently arranged on the main body portion 30 left and right, so that the charges on each protruding portion 32 are transmitted out of the mating portion 10 in a shorter path and a faster time, and the main body portion 30 is prevented from forming a high-frequency signal transmission that interferes with the electromagnetic waves and interferes with the terminal 2.

Referring to fig. 1, 2 and 7, each of the metal locking elements 4 is fixed to the corresponding end portion 12, the metal locking element 4 has a plate portion 40, the plate portion 40 extends back and forth on a vertical plane, a pivot hole 41 is recessed from an upper edge of a rear end of the plate portion 40, and the pivot hole 41 is adjacent to the fixing portion 11 for pivotally connecting the conductive cover 5. A retaining portion 42 extends backward from the rear end of the plate portion 40 for being fixed to the insulating body 1, a pin 43 extends downward from the lower edge of the front end of the plate portion 40, and the pin 43 penetrates downward through the end portion 12 and is exposed outside the insulating body 1 so as to be grounded and conducted to the second electrical component (not shown).

Referring to fig. 1, 2 and 4, the conductive cover 5 has a connecting portion 50, the connecting portion 50 is located above a row of the contact arms 22 and in front of a row of the positioning arms 23, the connecting portion 50 has a plurality of grooves 501, and each groove 501 is disposed in front of and behind each fixing slot 110. The positioning arm 23 of each ground terminal G is clamped in the corresponding groove 501, and the positioning arm 23 of each signal terminal S is opposite to the corresponding groove 501 in the front-back direction, so that the facing distance D between the positioning arm 23 of the signal terminal S and the conductive cover 5 is increased, the capacitance effect between the positioning arm 23 of the signal terminal S and the conductive cover 5 is reduced, and the electromagnetic wave on the positioning arm 23 is reduced. The left and right ends of the connecting portion 50 are respectively provided with a pivoting portion 51, which is correspondingly pivoted to one of the pivoting holes 41, so that the conductive cover 5 is pivoted to the metal locking member 4, and the conductive cover 5 and the second electrical component (not shown) are indirectly grounded and conducted through the pin 43.

Referring to fig. 1, fig. 2 and fig. 4, the conductive cover 5 has a press-connection portion 52 extending forward from the connection portion 50, the press-connection portion 52 is used for pressing the first shielding plate 202 downward to achieve grounding conduction, and the first shielding plate 202 is grounded and conducted with the second electrical component (not shown) through the press-connection portion 52 and the metal locking piece 4.

Referring to fig. 4 and 5, the conductive cover 5 is rotatably disposed relative to the insulating housing 1 to form an open position and a closed position, when the conductive cover 5 is rotated upward to the open position, the first electrical component 200 is inserted into the mating portion 10, the transmission terminal 204 is in contact with the terminal 2, the protrusion 32 is in contact with the second shielding plate 203, then the conductive cover 5 is rotated downward, the press-connecting portion 52 is in press-connection with the first shielding plate 202, and the conductive cover 5 is received in the notch 13 and located in front of the fixing portion 11.

Referring to fig. 8 and 9, the electrical connector 100 according to the second embodiment of the present invention is shown, and the electrical connector 100 according to the second embodiment is different from the electrical connector 100 according to the first embodiment only in that: the grounding member 3 has a plurality of extending portions 33, each extending portion 33 extends backward from the grounding member 3 and abuts against the lower portion of the head portion 221 of the grounding terminal G, so that the main body portion 30 and the grounding terminal G are directly grounded and conducted, and a grounding shielding ring is formed in front of, at the left side of and at the right side of each pair of the signal terminals S, for every two grounding terminals G and the corresponding two extending portions 33 and the main body portion 30, so as to facilitate the shielding effect on each pair of the signal terminals S; a part of the extension portion 33 is located between the ground terminal G and the main body portion 30 and electrically connected to the second shielding plate 203, so that a potential difference between the extension portion 33 and the ground terminal G is reduced, and resonance of the ground terminal G and the extension portion 33 is reduced; the positioning arm 23 of the ground terminal G is higher than the positioning arm 23 of the signal terminal S, and the height of the fixing portion 11 is increased.

Referring to fig. 10 and fig. 11, this is the electrical connector 100 of the third embodiment of the present invention, and the electrical connector 100 of the third embodiment is different from the electrical connector 100 of the second embodiment only in that: each of the extension portions 33 is spaced apart from the front of each of the ground terminals G, before the first electrical component 200 is plugged into the mating portion 10, no electrical connection exists between each of the extension portions 33 and the corresponding ground terminal G, after the first electrical component 200 is plugged into the mating portion 10, each of the extension portions 33 and the corresponding ground terminal G are spaced apart from each other in the front-back direction and contact the same transmission terminal 204, and the ground connection is indirectly formed through the transmission terminal 204. The transmission end 204 maintains an equal potential between the extension portion 33 and the contact portion 220, thereby reducing resonance when the first electrical component 200 is mated with the ground terminal G.

In summary, the electrical connector of the present invention has the following advantages:

1. the grounding piece 3 has a main body 30 mounted on the abutting surface 104 of the first step 101, the main body 30 is located in front of the row of head portions 221 and is opposite to the row of head portions 221 in the front-rear direction, so as to shield the head portions 221 of the signal terminals S from the electromagnetic wave of the invalid signal and prevent the electromagnetic wave from affecting the high-frequency signal transmission of the opposite pair of signal terminals S. The grounding member 3 has a plurality of conducting portions 31, which are formed by tearing and bending the main body 30 downward from the positions corresponding to the conducting slots 107 to form the conducting portions 31, and the conducting portions 31 downwardly pass through the corresponding connecting slots 106 and the conducting slots 107 to extend out of the insulating body 1 for grounding and conducting with the second electrical component (not shown). In the process of using the electrical connector 100, when the first electrical component 200 performs signal transmission with the signal terminal S, a portion of the signal is lost, the signal lost partially exists in the surrounding medium of the terminal 2 as an electromagnetic wave, and the main body 30 provided in front of the signal terminal S generates an electric charge under the influence of the lost signal electromagnetic wave, if this part of the charge is not conducted out of the insulating body 1, the charge on the grounding piece 3 will form interfering electromagnetic waves, therefore, the signal terminal S is affected, the connecting portion 31 of the present embodiment penetrates the docking portion 10 downward for grounding, and compared with the connecting portion 31 located outside the docking portion 10, the charges on the grounding member 3 are transmitted out of the insulating body 1 in a shorter conduction path and a shorter time, so as to avoid the formation of interfering electromagnetic waves by the grounding member 3, thereby increasing the shielding effect of the main body portion 30 on the signal terminal S.

2. The protrusion 32 is formed by tearing the main body 30 and protrudes upward to electrically contact the second shielding plate 203, and the charges on the second shielding plate 203 are transferred to the main body 30 through the protrusion 32 and then transferred to the second electrical component (not shown) through the conductive portion 31.

3. The width of the head 221 is gradually reduced from back to front, thereby reducing the electromagnetic wave of the invalid signal on the head 221, and facilitating the transmission of the high frequency signal. In the present embodiment, each head 221 has a communication groove 106 in front thereof, and the communication groove 105 communicates with the corresponding terminal groove to reduce the dielectric constant around the head 221, so as to reduce the electromagnetic resonance between the two heads 221 of the pair of signal terminals S, thereby facilitating the transmission of high-frequency signals.

4. The grounding member 3 has a plurality of extending portions 33, each extending portion 33 extends backward from the grounding member 3 and abuts against the lower side of the head portion 221 of the grounding terminal G, a grounding shielding ring is provided in front of and on the left and right sides of a pair of signal terminals S, so that the main body portion 30 and the grounding terminal G are directly grounded and conducted, a grounding shielding ring is formed in front of and on the left and right sides of each pair of signal terminals S for each two grounding terminals G and the corresponding two extending portions 33 and main body portion 30, which is beneficial to the shielding effect of each pair of signal terminals S.

5. When the first electrical component 200 is plugged into the mating portion 10, each of the extending portions 33 and the corresponding ground terminal G are spaced apart from each other and contact the same transmission end 204, and the ground conduction is indirectly formed through the transmission end 204. The transmission end 204 maintains a relative potential between the extension portion 33 and the contact portion 220, thereby reducing resonance when the first electrical component 200 is mated with the ground terminal G.

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

1. An electrical connector electrically connected to a first electrical component, comprising:

an insulating body having a forwardly extending mating portion with a mating surface for mating with the first electrical component;

a row of terminals fixed to the insulating body, each of the terminals having a contact portion and a head portion extending forward from the contact portion, the contact portion being exposed at the mating surface and electrically contacting the first electrical component in the vertical direction, the row of terminals having at least one signal terminal therein;

The grounding piece is provided with a main body part which is arranged on the butt joint surface, is positioned in front of the head part of at least one signal terminal at intervals, is overlapped with the head part along the front and back directions, is air as a medium between the main body part and the head part along the front and back directions, extends downwards from the main body part to form a guide connection part, penetrates through the butt joint part downwards and is used for grounding conduction.

2. The electrical connector of claim 1, wherein: the grounding piece is provided with a convex part, the convex part is in grounding conduction with the first electrical component, and at least one convex part and the conducting part are arranged on the main body part along the left-right direction.

3. The electrical connector of claim 2, wherein: the grounding member has a plurality of convex portions and a plurality of conductive portions, the plurality of conductive portions and the plurality of convex portions being alternately disposed at intervals in a left-right direction.

4. The electrical connector of claim 3, wherein: the distances from each convex part to the two adjacent guide connection parts on the two sides are different.

5. The electrical connector of claim 1, wherein: the grounding piece is provided with a convex part which protrudes towards the first electrical element in the vertical direction and is communicated with the first electrical element, and the convex part is positioned in front of the head part of at least one signal terminal.

6. The electrical connector of claim 1, wherein: the insulating body is further provided with a fixing part, the fixing part and the butt joint part are arranged at an interval from top to bottom, each terminal is provided with a positioning arm and fixed on the fixing part, a gap is formed between the positioning arm of the signal terminal and the front surface of the fixing part, and the gap is filled with air.

7. The electrical connector of claim 6, wherein: the electric connector is further provided with a conductive cover, the conductive cover is arranged in front of the fixing part, the first electric element is positioned between the conductive cover and the butt joint part, the terminals are provided with two grounding terminals and a pair of signal terminals, the pair of signal terminals are used for transmitting differential signals and are positioned between the two grounding terminals, each positioning arm of the grounding terminal extends forwards out of the front surface of the fixing part and is electrically communicated with the conductive cover, and the gap filled with air is positioned between the positioning arms of the two grounding terminals.

8. The electrical connector of claim 1, wherein: the ground piece is provided with two extending parts, each extending part is communicated with one corresponding ground terminal, and therefore a ground shielding ring is formed in front of and on the left side and the right side of each pair of signal terminals.

9. An electrical connector electrically connected to a first electrical component, comprising:

an insulating body having a mating portion extending forward, the mating portion having a mating surface for mating with the first electrical component;

a row of terminals fixed to the insulating body, each of the terminals having a contact portion and a head portion extending forward from the contact portion, the contact portion being exposed at the mating surface and electrically contacting the first electrical component, the row of terminals having at least one signal terminal and two ground terminals, at least one signal terminal being disposed between the two ground terminals;

the grounding piece is provided with a main body part arranged on the butt joint surface, and is arranged in front of the head part of at least one signal terminal of the row of terminals at intervals, the main body part is overlapped with the head part along the front-back direction, a medium between the main body part and the head part is air along the front-back direction, the grounding piece is provided with two extension parts, and each extension part is in grounding conduction with one corresponding grounding terminal.

10. The electrical connector of claim 9, wherein: each extension portion is abutted against the lower portion of the corresponding ground terminal so as to form ground conduction, and part of the extension portion is located in front of the ground terminal.

11. The electrical connector of claim 9, wherein: after the first electrical element is matched with the butting part, the contact part and the extension part of the grounding terminal form grounding conduction through the first electrical element.

12. The electrical connector of claim 9, wherein: the grounding piece is provided with a guide connection part which downwards penetrates through the butt joint part and is used for grounding conduction.

13. The electrical connector of claim 12, wherein: the conductive connection part is arranged in front of the grounding terminal.

14. The electrical connector of claim 12, wherein: the grounding piece is provided with a convex part, the convex part is in grounding conduction with the first electrical component, and at least one convex part and the conducting part are arranged on the main body part along the left-right direction.

15. The electrical connector of claim 14, wherein: the grounding member has a plurality of convex portions and a plurality of conductive portions, the plurality of conductive portions and the plurality of convex portions being alternately disposed at intervals in a left-right direction.

16. The electrical connector of claim 15, wherein: the distances from each convex part to the two adjacent guide connection parts on the two sides are different.

17. The electrical connector of claim 16, wherein: the insulating body is further provided with a fixing part, the fixing part and the butt joint part are arranged at an interval from top to bottom, each terminal is provided with a positioning arm and fixed on the fixing part, a gap is formed between the positioning arm of the signal terminal and the front surface of the fixing part, and the gap is filled with air.

18. The electrical connector of claim 17, wherein: the electric connector is further provided with a conductive cover, the conductive cover is arranged in front of the fixing part, the first electric element is positioned between the conductive cover and the butt joint part, the terminal is provided with two grounding terminals and a pair of signal terminals, the pair of signal terminals are used for transmitting differential signals and are positioned between the two grounding terminals, the positioning arm of each grounding terminal extends forwards to form the front surface of the fixing part and is electrically communicated with the conductive cover, and the gap filled with air is positioned between the positioning arms of the two grounding terminals.