CN210111081U

CN210111081U - Electrical connector

Info

Publication number: CN210111081U
Application number: CN201920849769.9U
Authority: CN
Inventors: 彭治国; 何建志
Original assignee: Lotes Co Ltd
Current assignee: Lotes Co Ltd
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2020-02-21
Anticipated expiration: 2029-06-05

Abstract

The utility model discloses an electric connector for electric connection butt joint component to circuit board, include: an insulating body; the plurality of terminals are arranged on the insulating body in a plurality of rows in the front-back direction, each terminal is provided with a contact part for guiding and connecting the butting element, the plurality of terminals comprise at least one signal terminal and a plurality of grounding terminals, and each row of terminals comprise at least one grounding terminal; the first grounding pieces are arranged at intervals in the front-back direction, each first grounding piece is arranged adjacent to one row of terminals in the front-back direction, each first grounding piece is provided with at least one first guide connection part, and each first guide connection part is in guide connection with one grounding terminal in the adjacent row; the second grounding piece extends in the front-back direction, at least one first positioning part is arranged between the front end part and the back end part of the second grounding piece, a clamping structure which is clamped with each first grounding piece is formed between the two end parts of the second grounding piece and each first grounding piece, and the first positioning part is positioned on the insulating body and used for inhibiting the first grounding piece from moving in the front-back direction.

Description

Electrical connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector, and more particularly to an electrical connector with a grounding member.

[ background of the invention ]

A connector assembly for mating with a chip module, comprising: the circuit board, be the multirow in the front and back direction weld in a socket frame that a plurality of terminals, insulating material of circuit board made and locate a plurality of first metalworks and a plurality of second metalwork of socket frame, the socket frame is including being located a rectangle through-hole that runs through from top to bottom in the middle of, the socket frame in the four sides of rectangle through-hole are equipped with a plurality of slots respectively, and are a plurality of the terminal accept in the rectangle through-hole, each the terminal is equipped with a contact site, the contact site is used for upwards leading connect the chip module is a plurality of that the multirow set up first metalwork and be a plurality of that multiseriate set up the mutual block of second metalwork is latticed and separates a plurality ofly the terminal. Each row of the terminals includes a plurality of signal terminals and a plurality of ground terminals. The two end parts of the first metal part and the two end parts of the second metal part are respectively clamped in the slots on two sides of the rectangular through hole correspondingly, and the first metal part and the second metal part are respectively provided with a grounding elastic arm for guiding and connecting the chip module. And the first metal piece and the second metal piece are respectively provided with a grounding pin which is inserted into the circuit board at the position close to the end part of the first metal piece and the second metal piece to form grounding.

In the structure described above, because the two end portions of the first metal piece and the two end portions of the second metal piece are correspondingly clamped in the slot, the respective middle portions of the first metal piece and the second metal piece are suspended and are not fixed to the circuit board, the rectangular through hole in the middle of the socket frame is not provided with any structure for correspondingly fixing the first metal piece and the second metal piece, and the first metal piece and the second metal piece are easy to shift in the middle, so that the grounding elastic arm cannot correctly guide and connect the corresponding conductive sheet on the chip module, and the structure is complicated.

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

[ Utility model ] content

To the problem that the background art faces, the creation aim at of the utility model provides a second ground connection piece is led and is connect a plurality of first ground connection pieces and realize the shielding, and the second ground connection piece restraines the electric connector that first ground connection piece takes place the skew on the front and back.

In order to achieve the above object, the utility model adopts the following technical means:

an electrical connector for electrically connecting a mating component to a circuit board, comprising: an insulating body; a plurality of terminals arranged in the insulating body in a plurality of rows in the front-rear direction, each terminal having a contact portion for guiding the first mating member, the plurality of terminals including at least one signal terminal and a plurality of ground terminals, each row of the terminals including at least one ground terminal; a plurality of first grounding pieces, which are arranged at intervals in the front-back direction, wherein each first grounding piece is arranged adjacent to one row of the terminals in the front-back direction, each first grounding piece is provided with at least one first conducting part, and each first conducting part is in conducting connection with one grounding terminal in the adjacent row; the second grounding piece extends in the front-back direction, at least one first positioning portion is arranged between the front end portion and the back end portion of the second grounding piece, a clamping structure is formed between the two end portions of the second grounding piece and each first grounding piece in a clamping mode, and the first positioning portion is positioned on the insulating body and used for restraining the first grounding piece from moving in the front-back direction.

Furthermore, the first grounding piece is provided with a first connecting part, a first extending part is formed by extending from the first connecting part, and a clamping groove for clamping one first extending part is formed on the second grounding piece.

Furthermore, at least one first guide connecting part and a plurality of first extending parts are formed by extending from the first connecting part to the same side, wherein the first guide connecting part is arranged between every two adjacent first extending parts, and the distance between every two adjacent first extending parts is greater than the maximum width of the first guide connecting part.

Furthermore, each first extending portion has a first portion extending from the first connecting portion and a second portion extending from the first portion, a distance between two adjacent first portions is greater than a distance between two adjacent second portions, and the first connecting portion is located between two adjacent first portions.

Furthermore, the insulating body is provided with a plurality of first accommodating grooves and a first partition for partitioning two adjacent first accommodating grooves, the plurality of first extending portions are correspondingly accommodated in the plurality of first accommodating grooves, and two adjacent first extending portions clamp two sides of the first partition.

Further, each terminal comprises a base and an elastic arm formed by extending from the base, the elastic arm is provided with the contact part, the elastic arm is positioned above one first partition column, and the corresponding contact part forwards passes through the first partition column.

Furthermore, the second grounding piece is provided with a second connecting portion, the second connecting portion extends to form a plurality of second extending portions arranged at intervals, the first positioning portion is formed between every two adjacent second extending portions, the insulating body is provided with a plurality of second accommodating grooves and a second partition rail for partitioning the two adjacent second accommodating grooves, the second extending portions are correspondingly accommodated in the second accommodating grooves, and the second partition rail is clamped by the first positioning portion.

Furthermore, an extending end of a part of the second extending portion is recessed toward the second connecting portion to form the slot, and the first grounding piece is clamped in the slot.

Further, the length of the concave setting of the clamping groove is larger than the length of the first positioning part.

Further, the width of the first positioning portion in the front-rear direction is larger than the width of the slot in the front-rear direction.

Further, the plate thickness of the second ground is larger than the plate thickness of the first ground.

The fourth grounding member extends in the front-rear direction, the fourth grounding member has at least one second positioning portion between the front end portion and the rear end portion of the fourth grounding member, the two end portions of the fourth grounding member are mutually clamped with the third grounding members, and the second positioning portion is positioned on the insulating body and used for inhibiting the third grounding member from moving in the front-rear direction.

Furthermore, one of the first connecting portion and one of the second connecting portion are connected to the same ground terminal in two opposite directions.

Further, the first guide connection part and the second guide connection part are arranged in a vertically staggered mode.

Furthermore, the insulating body has a first body, a second body and at least one third body located between the first body and the second body, the first grounding piece and the second grounding piece are fixed on the first body, the third grounding piece and the fourth grounding piece are fixed on the second body, the insulating body is provided with a plurality of accommodating grooves penetrating through the first body, the second body and the third body, the accommodating grooves accommodate a plurality of terminals, the contact part protrudes upwards out of the first body, and each terminal protrudes downwards out of the second body for being connected with the circuit board in a guiding manner.

Compared with the prior art, the utility model discloses electric connector has following beneficial effect:

the second grounding piece extends in the front-back direction, the second grounding piece is provided with at least one first positioning part between the front end part and the rear end part of the second grounding piece, the two end parts of the second grounding piece and each first grounding piece form the clamping structure which is clamped mutually, and the first positioning part is positioned on the insulating body and used for inhibiting the first grounding piece from moving in the front-back direction, so that the conducting part can well conduct and connect the grounding terminals of adjacent rows, good shielding effect can be ensured, and the high-frequency requirement can be met.

[ description of the drawings ]

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

fig. 2 is an exploded perspective view of the ground terminal of fig. 1;

fig. 3 is a partial perspective cross-sectional view of the electrical connector of the present invention;

fig. 4 is a schematic view of the first grounding member of fig. 3 mounted on the insulating body;

fig. 5 is a schematic view of the second grounding member of fig. 4 mounted on the insulating body;

FIG. 6 is an assembled perspective view of FIG. 5;

FIG. 7 is a top view of FIG. 1 in combination;

FIG. 8 is an enlarged view of a portion C of FIG. 7;

FIG. 9 is a partial cross-sectional view taken along line A-A of FIG. 7;

fig. 10 is a cross-sectional view of the connector of fig. 7 taken along line B-B and prior to mating with a mating component and a circuit board;

fig. 11 is a schematic view of the electrical connector of fig. 10 mated with the mating component and the circuit board;

fig. 12 is an exploded perspective view of the third grounding member, the fourth grounding member and the terminal according to the present invention.

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

electrical connector 100	Insulating body 1	Upper surface 11	Lower surface 12
				First body 13	The first accommodation groove 131	First rail 132	Second receiving groove 133
Second barrier 134	Second body 14	Third body 15	Receiving groove 16
				Terminal 2	Signal terminal 2A	Ground terminal 2B	Upper ground terminal 2a
Lower ground terminal 2b	Base	21	Upper base 21a					Lower base 21b
				Elastic arm 22	Upper spring arm 22a	Lower spring arm 22b	Contact part		221
Upper contact part 221a	Lower contact portion 221b	Upper bent portion 23a	Lower bent portion 23b
				First grounding member 3	First connecting portion 31	First extension 32	First portion 321
Second portion 322	First guideConnecting part 33	Second grounding member 4	End 40
				Second connecting part 41	Second extension 42	First positioning portion 43	Card slot 44
Third ground connection member 5	Second lead-in part 53	Fourth ground connection member 6	Second positioning portion 63
				Docking element 200	Circuit board 300

[ detailed description ] embodiments

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

As shown in fig. 1 and fig. 11, in order to provide an electrical connector 100 according to the present invention, the electrical connector 100 is used to electrically connect a mating component 200 to a circuit board 300, and the electrical connector 100 includes an insulative housing 1, a plurality of terminals 2 fixed to the insulative housing 1, and a plurality of first grounding members 3 and at least one second grounding member 4. In the present embodiment, the docking element 200 is a chip module, and the second grounding member 4 is a plurality of the same as the first grounding member 3. Of course, in other embodiments, the first docking element 200 may be another type of component, and the second grounding element 4 may be only one. For convenience of understanding of the drawings, a forward direction in the front-rear direction is defined as an X axis, a rightward direction in the left-right direction is defined as a Y axis, and an upward direction in the up-down direction is defined as a Z axis.

As shown in fig. 1, 8 and 10, the insulating body 1 has an upper surface 11 and a lower surface 12 which are oppositely disposed, and a first body 13, a second body 14 and at least one third body 15 which is located between the first body 13 and the second body 14 are disposed between the upper surface 11 and the lower surface 12, and in this embodiment, there are three third bodies 15. The insulating body 1 is provided with a plurality of accommodating grooves 16 penetrating through the first body 13, the second body 14, and the third body 15, and the plurality of accommodating grooves 16 are provided in the insulating body 1 in a plurality of rows in the front-rear direction and in a plurality of rows in the left-right direction.

As shown in fig. 1, fig. 6 and fig. 8, the first body 13 and the second body 14 are respectively provided with a plurality of first receiving grooves 131 and a first partition 132 separating two adjacent first receiving grooves 131, the plurality of first receiving grooves 131 are also arranged in a plurality of rows in the front-rear direction, and the plurality of rows of first receiving grooves 131 and the plurality of rows of receiving grooves 16 are arranged in the front-rear direction at intervals. The first body 13 and the second body 14 further include a plurality of the second receiving grooves 133 and a second partition 134 separating two adjacent second receiving grooves 133, the plurality of the second receiving grooves 133 are arranged in multiple rows in the left-right direction, and the multiple rows of the second receiving grooves 133 and the multiple rows of the receiving grooves 16 are arranged in intervals in the left-right direction. The first barriers 132 and the second barriers 134 are arranged to be offset in the front-rear direction.

As shown in fig. 2 and 3, the terminals 2 are formed by punching a metal plate, and a plurality of the terminals 2 are correspondingly arranged in a plurality of rows in the front-rear direction in the plurality of the receiving grooves 16 of the insulating housing 1.

As shown in fig. 1, 8 and 11, each of the terminals 2 includes a base portion 21, an elastic arm 22 is connected to each of upper and lower ends of the base portion 21, a contact portion 221 is disposed on the elastic arm 22 for guiding the docking element 200 or the circuit board 300, the contact portion 221 is located in front of the corresponding base portion 21, each of the elastic arms 22 is located above one of the first partitions 132, and the corresponding contact portion 221 passes over the first partition 132 forward.

As shown in fig. 4 and 11, the plurality of terminals 2 include a plurality of signal terminals 2A and a plurality of ground terminals 2B, each row of the terminals 2 includes a plurality of signal terminals 2A and a plurality of ground terminals 2B, the signal terminals 2A and the ground terminals 2A have the same structure, in other words, the signal terminals 2B and the ground terminals 2B have the same structure, shape and size, so that the signal terminals 2A and the ground terminals 2B are manufactured by the same set of molds.

As shown in fig. 2 and 10, the terminal 2 includes an upper terminal and a lower terminal, i.e., the signal terminal 2A includes an upper signal terminal and a lower signal terminal which are connected to each other, and the ground terminal 2B includes an upper ground terminal 2A and a lower ground terminal 2B which are connected to each other.

As shown in fig. 2 and fig. 11, each of the upper signal terminal and the upper ground terminal 2a has an upper base 21a and an upper elastic arm 22a bent and extended upward from the upper base 21a, the upper elastic arm 22a has an upper contact portion 221a, and the upper contact portion 221a protrudes upward from the upper surface 11 to elastically abut against the docking element 200 to form an electrical connection. An upper bending part 23a is formed by punching from the plate surface of the upper base part 21a, one end of the upper bending part 23a is connected with the upper base part 21a, the other end is a free end, and the upper bending part 23a extends downwards and deviates from the upper base part 21 a.

As shown in fig. 2 and 11, each of the lower signal terminal and the lower ground terminal 2b is provided with a lower base portion 21b and a lower elastic arm 22b bent and extended downward from the lower base portion 21b, the lower base portion 21b and the upper base portion 21a are stacked front and back to form an electrical contact, and the base portions 21 are accommodated in the same accommodating slot 16, the lower elastic arm 22a is provided with a lower contact portion 221b, and the lower contact portion 221b protrudes downward from the lower surface 12 to elastically abut against the circuit board 300 downward to form an electrical connection. A lower bent portion 23b is formed by press-forming from a plate surface of the lower base portion 21b, one end of the lower bent portion 23b is connected to the lower base portion 21b, the other end is a free end, the lower bent portion 23b extends upward and deviates from the lower base portion 21b, the lower bent portion 23b and the upper bent portion 23a are located on front and rear sides of the base portion 21, the upper base portion 21a is sandwiched between the lower base portion 21b and the lower bent portion 23b, and the lower base portion 21b is sandwiched between the upper base portion 21a and the upper bent portion 23 a.

As shown in fig. 1, 5 and 10, a plurality of the first grounding pieces 3 and at least one of the second grounding pieces 4 are mutually engaged and fixed to the insulating body 1, in this embodiment, a plurality of the first grounding pieces 3 and a plurality of the second grounding pieces 4 are both provided.

As shown in fig. 3, 4 and 10, the first grounding member 3 is formed by stamping a metal plate, and has a first connection portion 31, the first connection portion 31 extends in the left-right direction, a plurality of first extension portions 32 and a plurality of first connection portions 33 are formed by extending upward from the top end of the first connection portion 31, the plurality of first extension portions 32 are arranged at intervals in the left-right direction, and the plurality of first connection portions 33 are arranged at intervals in the left-right direction, wherein the first connection portion 33 is arranged between two adjacent first extension portions 32 of a part of the first grounding member 3, and the interval between two adjacent first extension portions 32 is greater than the maximum width of the first connection portion 33 in the left-right direction. Wherein the first connecting portion 33 is not disposed between two adjacent first extending portions 32 of another part of the first grounding member 3, because the position corresponds to the signal terminal 2A, and the first grounding member 3 does not contact the signal terminal 2A.

As shown in fig. 4 and 5, each of the first extending portions 32 has a first portion 321 extending upward from the first connecting portion 31 and a second portion 322 extending upward from the first portion 321, a distance between two adjacent first portions 321 is greater than a distance between two adjacent second portions 322, and the first connecting portion 33 is located between two adjacent first portions 321. The first connecting portion 31 and the first portion of each first grounding member 3 are first accommodated in one of the third bodies 15 downward, the second portions 322 are then accommodated in the first accommodating grooves 131 of the first body 13 upward, and two adjacent first extending portions 32 clamp two sides of the first partition 132, and the top surface of the third body 15 accommodating the first grounding member 3 is attached to the bottom surface of the first body 13 upward.

As shown in fig. 4 and 5, the second grounding member 4 is formed by punching a metal plate, and the thickness of the metal plate forming the second grounding member 4 is greater than that of the metal plate forming the first grounding member 3. The second grounding piece 4 extends in the front-rear direction, the second grounding piece 4 has two end portions 40 arranged in the front-rear direction, the end portions 40 are clamped on the first body 13, and the second grounding piece 4 is only accommodated in the first body 13.

As shown in fig. 1, 3 and 6, the second grounding member 4 is provided with a second connecting portion 41 extending in the front-rear direction, the second connecting portion 41 extends to form a plurality of second extending portions 42 arranged at intervals in the front-rear direction, the second extending portions 42 extend in the up-down direction, and in the present embodiment, the second extending portions 42 extend downward from the second connecting portion 41. The first positioning portion 43 is formed between two adjacent second extending portions 42, that is, the first positioning portion 43 is a groove structure, and the first positioning portion 43 is disposed between two end portions 40 of the second ground component 4. The second extending portions 42 are correspondingly received in the second receiving grooves 133, each of the first positioning portions 43 is held in one of the corresponding second barriers 134, and the top end of the second connecting portion 41 is not higher than the upper surface 11. A portion of the extending end of the second extending portion 42 is recessed toward the second connecting portion 41 to form a slot 44, and the first extending portion 32 is engaged with the slot 44 to form an engaging structure. In other embodiments, the first grounding member 3 may be provided with a slot, and the second extending portion 42 is engaged with the slot of the first grounding member 3 to form an engaging structure, regardless of the type of the engaging structure, as long as the first grounding member 3 and the second grounding member 4 are engaged with each other.

As shown in fig. 12, the electrical connector 100 further includes a plurality of third grounding members 5 and at least one fourth grounding member 6 fixed to the insulating housing 1, in this embodiment, the plurality of third grounding members 5 and the plurality of fourth grounding members 6 are both provided.

As shown in fig. 2, 4 and 12, the third grounding member 5 is formed by stamping a metal plate, the third grounding member 5 is fixed to the second body 14 and one third body 15 adjacent to the second body 14, each third grounding member 5 is disposed adjacent to one row of the terminals 2 in the front-back direction, each third grounding member 5 has at least one second connecting portion 53, each second connecting portion 53 is connected to one grounding terminal 2B in the adjacent row, one first connecting portion 33 and one second connecting portion 53 are connected to the same grounding terminal 2B in the front-back direction, and the first connecting portions 33 and the second connecting portions 53 are disposed in a vertically staggered manner. The third grounding member 5 has substantially the same structure as the first grounding member 3, and the corresponding second body 14 and the third body 15 adjacent to the second body 14 have structures correspondingly matched with the second body, which can refer to the structural design of the first body 13 and the third body 15 adjacent to the first body 13.

As shown in fig. 12, the fourth grounding member 6 is formed by stamping a metal plate, the fourth grounding member 6 is only fixed to the second body 14, the fourth grounding member 6 extends in the front-rear direction, the two ends of the fourth grounding member 6 are engaged with each other between the third grounding member 5, the fourth grounding member 6 has at least one second positioning portion 63 between the front end and the rear end, and the second positioning portion 63 is positioned on the insulating body 1 to inhibit the third grounding member 5 from moving in the front-rear direction. The fourth grounding member 6 and the second grounding member 4 have substantially the same structure, and the corresponding second body 14 has a structure corresponding to and matching with the fourth grounding member, which can refer to the structural design of the first body 13.

To sum up, the utility model discloses electric connector 100 has following beneficial effect:

(1) the second grounding member 4 has the first positioning portion 43 between the two front and rear end portions 40 thereof, the second grounding member 4 forms the engaging structure between the two end portions 40 thereof and each of the first grounding members 3, and the first positioning portion 43 is positioned on the insulating body 1 to inhibit the first grounding members 3 from moving in the front-rear direction, so that the first guiding portion 33 can guide each of the grounding terminals 2B of the adjacent row well, thereby ensuring a good shielding effect and meeting the high frequency requirement.

(2) A plurality of first extending portions 32 and at least one first connecting portion 33 are formed by extending from the first connecting portion 31 to the same side, wherein the first connecting portion 33 is disposed between two adjacent first extending portions 32, and a distance between two adjacent first extending portions 32 is greater than a maximum width of the first connecting portion 33. When the first lead-in portion 33 abuts against the ground terminal 2B, there may be enough space for the first lead-in portion 33 not to be caught between two adjacent first extension portions 32.

(3) The first extending portions 32 are correspondingly accommodated in the first accommodating grooves 131, and two adjacent first extending portions 32 clamp two sides of the first partition 132, so as to inhibit the second grounding piece 4 from shifting in the left-right direction, ensure that the first guiding and connecting portion 33 does not break away from the contact with the grounding terminals 2B in the adjacent row in the left-right direction, and achieve the shielding effect.

(4) The plate thickness of the second grounding piece 4 is larger than that of the first grounding piece 3, so that the second grounding piece 4 has enough strength to fix the first grounding piece 3, the first grounding piece 3 is ensured not to deviate, a good shielding effect is achieved, and the high-frequency requirement is met.

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 the equivalent technical changes using the description and drawings of the present invention are included in the scope of the present invention.

Claims

1. An electrical connector for electrically connecting a mating component to a circuit board, comprising:

an insulating body;

a plurality of terminals arranged in the insulating body in a plurality of rows in the front-rear direction, each terminal having a contact portion for guiding the mating member, the plurality of terminals including at least one signal terminal and a plurality of ground terminals, each row of the terminals including at least one ground terminal;

a plurality of first grounding pieces, which are arranged at intervals in the front-back direction, wherein each first grounding piece is arranged adjacent to one row of the terminals in the front-back direction, each first grounding piece is provided with at least one first conducting part, and each first conducting part is in conducting connection with one grounding terminal in the adjacent row;

the second grounding piece extends in the front-back direction, at least one first positioning portion is arranged between the front end portion and the back end portion of the second grounding piece, a clamping structure is formed between the two end portions of the second grounding piece and each first grounding piece in a clamping mode, and the first positioning portion is positioned on the insulating body and used for restraining the first grounding piece from moving in the front-back direction.

2. The electrical connector of claim 1, wherein: the first grounding piece is provided with a first connecting part, a first extending part is formed by extending from the first connecting part, and a clamping groove for clamping one first extending part is formed on the second grounding piece.

3. The electrical connector of claim 2, wherein: the first connecting portion extends towards the same side to form at least one guide connecting portion and a plurality of first extending portions, the guide connecting portion is arranged between every two adjacent first extending portions, and the distance between every two adjacent first extending portions is larger than the maximum width of the guide connecting portion.

4. The electrical connector of claim 3, wherein: each first extension portion is provided with a first portion formed by extending from the first connecting portion and a second portion formed by extending from the first portion, the distance between every two adjacent first portions is larger than the distance between every two adjacent second portions, and the guide connecting portion is located between every two adjacent first portions.

5. The electrical connector of claim 2, wherein: the insulating body is provided with a plurality of first accommodating grooves and a first partition for partitioning two adjacent first accommodating grooves, the first extending portions are correspondingly accommodated in the first accommodating grooves, and the two adjacent first extending portions clamp two sides of the first partition.

6. The electrical connector of claim 5, wherein: each terminal comprises a base and an elastic arm formed by extending from the base, the elastic arm is provided with the contact part, the elastic arm is positioned above one first partition column, and the corresponding contact part forwards passes through the first partition column.

7. The electrical connector of claim 2, wherein: the second grounding piece is provided with a second connecting portion, the second connecting portion extends to form a plurality of second extending portions arranged at intervals, the first positioning portion is formed between every two adjacent second extending portions, the insulating body is provided with a plurality of second accommodating grooves and a second partition fence for partitioning every two adjacent second accommodating grooves, the second extending portions are correspondingly accommodated in the second accommodating grooves, and the second partition fence is clamped by the first positioning portion.

8. The electrical connector of claim 7, wherein: the extending tail end of one part of the second extending part is concavely arranged towards the direction of the second connecting part to form the clamping groove, and the first grounding piece is clamped in the clamping groove.

9. The electrical connector of claim 8, wherein: the length of the concave setting of the clamping groove is larger than the length of the first positioning part.

10. The electrical connector of claim 8, wherein: the width of the first positioning part in the front-back direction is larger than that of the clamping groove in the front-back direction.

11. The electrical connector of claim 1, wherein: the second ground member has a plate thickness larger than that of the first ground member.

12. The electrical connector of claim 1, wherein: the grounding device further comprises a plurality of third grounding pieces and at least one fourth grounding piece, wherein each third grounding piece and one row of terminals in the third grounding pieces are arranged in a front-back adjacent mode, each third grounding piece is provided with at least one second guide connection portion, each second guide connection portion is connected with one grounding terminal in the adjacent row in a guide mode, the fourth grounding piece extends in the front-back direction, at least one second positioning portion is arranged between the front end portion and the rear end portion of the fourth grounding piece, the two end portions of the fourth grounding piece are mutually clamped with each third grounding piece, and the second positioning portions are positioned on the insulating body and used for restraining the third grounding pieces from moving in the front-back direction.

13. The electrical connector of claim 12, wherein: one of the first connecting portion and the second connecting portion are connected to the same ground terminal in two opposite directions.

14. The electrical connector of claim 12, wherein: the first guide connecting part and the second guide connecting part are arranged in a vertically staggered mode.

15. The electrical connector of claim 12, wherein: the insulating body is provided with a first body, a second body and at least one third body positioned between the first body and the second body, the first grounding piece and the second grounding piece are fixedly arranged on the first body, the third grounding piece and the fourth grounding piece are fixedly arranged on the second body, the insulating body is provided with a plurality of accommodating grooves penetrating through the first body, the second body and the third body, the accommodating grooves accommodate a plurality of terminals, and each terminal protrudes downwards out of the second body for being in conductive connection with the circuit board.