CN216312089U - Electrical connector - Google Patents

Abstract

The utility model discloses an electric connector, which is used for electrically connecting a chip module and a circuit board and comprises: the insulating body is provided with at least one first area and at least one second area, the insulating body is provided with a plurality of first terminal grooves which penetrate through the insulating body from top to bottom in the first area, and a plurality of second terminal grooves which penetrate through the insulating body from top to bottom in the second area; the plurality of first terminals are accommodated in the plurality of first terminal grooves, the plurality of first terminals are arranged in a plurality of rows, the plurality of first terminals comprise a plurality of pairs of differential signal terminals and a plurality of grounding terminals, and each pair of differential signal terminals is used for transmitting high-speed signals; the plurality of second terminals are accommodated in the plurality of second terminal grooves, the plurality of second terminals are arranged in a plurality of rows, and the second terminals comprise single-ended signal terminals for transmitting low-speed signals; the distance between each pair of differential signal terminals is larger than the distance between two adjacent second terminals in the same row, more second terminals can be arranged, and dense distribution is realized, so that the occupied space of the insulating body is reduced.

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 high and low speed signal terminals partitioned for electrical connection between a chip module and a circuit board.

[ background of the utility model ]

Present electric connector for electric connection chip module to circuit board, electric connector includes an insulator and a plurality of conductive terminal, insulator is equipped with a plurality of terminal grooves, and is a plurality of conductive terminal correspondence is located a plurality of the terminal groove, and is a plurality of conductive terminal is the multirow setting, and every row conductive terminal is equipped with a plurality ofly, and the front stall is a plurality of conductive terminal and back row conductive terminal one-to-one sets up or front and back dislocation arrangement, every row adjacent two conductive terminal's interval is the same, along with chip module's function is more and more powerful, rather than joining in marriage the electric connector integrate degree also more and more high, and is a plurality of conductive terminal includes a plurality of to high-speed differential signal terminal and a plurality of low-speed signal terminal, just high-speed differential signal terminal with the low-speed signal terminal mixes and arranges.

However, in order to facilitate the continuous high-speed assembly of an automatic machine, the high-speed differential signal terminal and the low-speed signal terminal are assembled on the insulating body by the same terminal material belt structure, so that the high-speed differential signal terminal and the low-speed signal terminal generally adopt the same terminal structure and arrangement mode, the same structure is required to meet the mechanical and high-frequency performance of transmitting the high-speed differential signal and the mechanical and high-frequency performance of transmitting the low-speed signal, and the design of the conductive terminal is designed according to the highest standard, so that the cost is high; in addition, the distance between the adjacent pairs of the high-speed differential signal terminals is set to be larger due to signal interference prevention, but the signal interference between the adjacent low-speed signal terminals is weaker, so that the arrangement of the low-speed signal terminals is the same as that of the high-speed differential signal terminals, which increases the occupied space of the low-speed signal terminals, is not favorable for distributing more conductive terminals in a limited space, or is not satisfactory for miniaturization development of electronic equipment.

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

[ Utility model ] content

The utility model aims to provide an electric connector which can improve the space utilization rate and can simultaneously transmit high-speed and low-speed signals.

In order to achieve the purpose, the utility model adopts the following technical scheme: an electrical connector for electrically connecting a chip module and a circuit board, comprising: the insulating body is provided with at least one first area and at least one second area, the insulating body is provided with a plurality of first terminal grooves which penetrate through the insulating body from top to bottom in the first area, and a plurality of second terminal grooves which penetrate through the insulating body from top to bottom in the second area; a plurality of first terminals received in the plurality of first terminal grooves, the plurality of first terminals being arranged in a plurality of rows, the plurality of first terminals including a plurality of pairs of differential signal terminals and a plurality of ground terminals, each pair of differential signal terminals being configured to transmit a high-speed signal; a plurality of second terminals accommodated in the plurality of second terminal grooves, the plurality of second terminals being arranged in a plurality of rows, the plurality of second terminals including a plurality of single-ended signal terminals for transmitting low-speed signals; the spacing between each pair of the differential signal terminals is larger than the spacing between two adjacent second terminals in the same row.

Further, the differential signal terminal and the ground terminal in the first terminal have the same structure, and the first terminal and the second terminal have different structures.

Further, one of the ground terminals is disposed on each of two opposite sides of each pair of the differential signal terminals, and the spacing between each pair of the differential signal terminals is equal to the spacing between one of the differential signal terminals and the adjacent ground terminal in the same row.

Further, in the first region, each of the first terminals of the front row and each of the first terminals of the rear row are aligned in the front-rear direction, and in the second region, the second terminals of the front row and the second terminals of the rear row are arranged in a front-rear offset manner.

Further, each first terminal comprises a first main body portion fixed in the first terminal groove, each second terminal comprises a second main body portion fixed in the second terminal groove, the first main body portion is wider than the second main body portion, and the first terminal is provided with at least one through hole penetrating through the first main body portion.

Furthermore, the insulation body further comprises at least one third area, the insulation body is provided with a plurality of third terminal grooves which penetrate through the third area from top to bottom, the plurality of third terminals are contained in the plurality of third terminal grooves, and the third terminals are power supply terminals for transmitting power.

Further, a plurality of the third terminals are arranged in a plurality of rows in the third region, and a pitch between two adjacent third terminals in the same row is larger than a pitch between each pair of the differential signal terminals.

Further, the third area is integrally disposed on the insulating body, or detachably fixed to the insulating body.

Further, the insulation body comprises a first central line and a second central line, the first central line extends along a front-back direction, the second central line extends along a left-right direction, the insulation body is provided with two first areas, the two first areas are arranged on the left side and the right side of the first central line, and the first areas and the second areas are arranged on the insulation body in an integrated structure.

Further, the two first regions are arranged in bilateral symmetry about the first center line.

Further, the insulating body is provided with only one second region, and the second regions are arranged in bilateral symmetry with respect to the first center line.

Further, each first area is arranged in a front-back symmetrical mode relative to the second center line.

Further, each of the first terminals includes a first main body portion fixed to the first terminal groove and a first abutting arm extending from the first main body portion, each of the second terminals includes a second main body portion fixed to the second terminal groove and a second abutting arm extending from the second main body portion, the first abutting arm and the second abutting arm are both used for abutting the chip module, the extending directions of the first abutting arms in each of the first regions are opposite to each other with respect to the second center line, and the extending directions of the second abutting arms are opposite to each other with respect to the first center line.

Furthermore, each first terminal comprises a first main body part fixedly held in the first terminal groove and a first abutting arm extending from the first main body part, each second terminal comprises a second main body part fixedly held in the second terminal groove and a second abutting arm extending from the second main body part, the first abutting arm and the second abutting arm are used for abutting against the chip module, when viewed from top, the extending direction of the first abutting arm forms an angle with the arrangement direction of each row of the first terminals, the extending direction of the second abutting arm forms an angle with the arrangement direction of each row of the second terminals, and the arrangement direction of the first terminals is not parallel to the arrangement direction of the second terminals and forms an angle.

Further, the plurality of second terminals include a plurality of ground terminals, each row of the second terminals is provided with a plurality of single-ended signal terminals and a plurality of ground terminals, and the distance between every two adjacent second terminals in each row of the second terminals is the same.

Compared with the prior art, the electric connector designed by the utility model has the following beneficial effects:

according to the utility model, the insulation body is divided into the first area and the second area, the first area is provided with a plurality of pairs of differential signal terminals and a plurality of grounding terminals, the differential signal terminals are used for transmitting high-speed signals, the second area is provided with a plurality of single-ended signal terminals for transmitting low-speed signals, so that the electric connector can simultaneously transmit high-speed differential signals and low-speed single-ended signals, the space for arranging a plurality of different electric connectors on the circuit board is saved, and the integration degree of the electric connector is higher and higher; simultaneously, every pair the interval between the differential signal terminal is greater than with adjacent two of arranging the interval between the second terminal, the subregion is clear and definite, reduces unnecessary space waste, has increased electric connector's space utilization, can set up more terminals, realizes the intensive distribution, or makes insulator is setting up the same quantity under the condition of second terminal, reduce the occupation space in second region to reduce insulator's space is favorable to electronic equipment's miniaturization development.

[ description of the drawings ]

Fig. 1 is a perspective view of an electrical connector including a first region a, a second region B and a third region C in accordance with a first embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a partial perspective view of the first area A of FIG. 1;

FIG. 4 is a partial schematic view of the first region A in FIG. 2;

FIG. 5 is a cross-sectional view of the conductive terminal in the first area A of FIG. 4 cut along line D-D before the conductive terminal is abutted with the electronic card and the circuit board;

fig. 6 is a perspective view of the first terminal of fig. 3;

FIG. 7 is a partial perspective view of a second area B of FIG. 1;

FIG. 8 is a partial schematic view of a second region B in FIG. 2;

FIG. 9 is a cross-sectional view of the conductive terminals in the second area B of FIG. 8 cut along line E-E before the conductive terminals are mated with the electronic card and the circuit board;

figure 10 is a perspective view of the second terminal of figure 7;

fig. 11 is a partial schematic view of the third region C in fig. 2;

fig. 12 is a cross-sectional view of the third area C of fig. 11, taken along line F-F, where the conductive terminals are in contact with the electronic card and the circuit board;

fig. 13 is a schematic diagram of an electrical connector including only a first area a and a second area B according to another embodiment of the present invention.

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

electrical connector 100	Insulating body 1	First terminal groove 11	Second terminal groove 12
				Third terminal groove 13	First terminal 2	Differential signal terminal 2S	Grounding terminal	2G
First body part 21	First abutment arm 22	First welding part 23	Through hole 24
				Through slot 25	Second terminal 3	Single-ended signal terminal 3S	Grounding terminal	3G
Second body portion 31	Second abutment arm 32	Second welded part 33	Third terminal 4
				Chip dieBlock 200	Circuit board 300	First center line L1	Second center line L2
First region A	Second region B	Third region C	First distance D1
				Second distance D2	Third distance D3	First width W1	Second width W2

[ detailed description ] embodiments

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

For the convenience of describing the specific structure of the electrical connector 100 of the present invention, a left-right direction, a front-back direction and an up-down direction are defined, the left-right direction, the front-back direction and the up-down direction are mutually perpendicular in pairs, the left-right direction is an X-axis direction, the front-back direction is a Y-axis direction, and the up-down direction is a Z-axis direction.

Referring to fig. 1 to 12, which are first exemplary embodiments of the electrical connector 100 of the present invention, the electrical connector 100 is adapted to be mated with a chip module 200 in the up-down direction and is conductively connected to a circuit board 300.

As shown in fig. 2, the electrical connector 100 includes an insulative housing 1, a plurality of first terminals 2, a plurality of second terminals 3, and a plurality of third terminals 4, wherein the plurality of first terminals 2, the plurality of second terminals 3, and the plurality of third terminals 4 are all mounted on the insulative housing 1.

As shown in fig. 2, the insulating main body 1 has a first center line L1 and a second center line L2, the first center line L1 extends along the front-back direction, the second center line L2 extends along the left-right direction, and an intersection point of the first center line L1 and the second center line L2 is a center point of the insulating main body 1.

As shown in fig. 2, the insulating body 1 is provided with at least one first area a, at least one second area B and at least one third area C, the first area a is correspondingly provided with a plurality of first terminals 2, the second area B is correspondingly provided with a plurality of second terminals 3, and the third area C is correspondingly provided with a plurality of third terminals 4. In this embodiment, the third area C is disposed at a middle position of the insulating body 1, the insulating body 1 is disposed with two first areas a and two second areas B, the two first areas a are disposed at left and right sides of the two second areas B and are symmetrically disposed about the first center line L1, and each first area a is symmetrically disposed about the second center line L2. Two of the second regions B are located on both left and right sides of the third region C and are symmetrically disposed left and right about the first center line L1, and each of the second regions B is symmetrically disposed front and rear about the second center line L2. In other embodiments, the first area a, the second area B, and the third area C may be provided in required numbers and in required positions as needed, and may also be asymmetrically provided.

As shown in fig. 1 and fig. 2, in the present embodiment, the first region a, the second region B and the third region C are all disposed on the insulating body 1 with an integrated structure. In other embodiments, the first area a, the second area B, or the third area C may be detachably fixed to the insulating body 1 in an assembling manner, the insulating body 1 may also form an independent portion corresponding to each area, and the portions are fixed to each other in an assembling manner, so as to form the insulating body 1.

As shown in fig. 2, 3, 7 and 11, the insulating main body 1 is provided with a plurality of first terminal grooves 11, a plurality of second terminal grooves 12 and a plurality of third terminal grooves 13 which vertically penetrate through the insulating main body, the plurality of first terminal grooves 11 are located in the first region a and accommodate the plurality of first terminals 2, the plurality of second terminal grooves 12 are located in the second region B and accommodate the plurality of second terminals 3, and the plurality of third terminal grooves 13 are located in the third region C and accommodate the plurality of third terminals 4.

As shown in fig. 4, in the first region a, a plurality of the first terminals 2 are arranged in a plurality of rows in the front-rear direction, a plurality of the first terminals 2 are arranged in each row, and each of the first terminals 2 in the front row is aligned with each of the first terminals 2 in the rear row in the front-rear direction.

As shown in fig. 4 and 5, the plurality of first terminals 2 include a plurality of pairs of differential signal terminals 2S and a plurality of ground terminals 2G, the structure of the differential signal terminals 2S is the same as that of the ground terminals 2G, in this embodiment, each row of the first terminals 2 includes a plurality of pairs of the differential signal terminals 2S and a plurality of the ground terminals 2G, and one of the ground terminals 2G is disposed on each of opposite sides of each pair of the differential signal terminals 2S in the same row. The pitch between each pair of the differential signal terminals 2S in the same row is set to a first pitch D1, and the pitch between each of the differential signal terminals 2S and the ground terminal 2G adjacent to the same row is equal to the first pitch D1. Of course, in other embodiments, the number of the first terminals 2 including the differential signal terminals 2S and the number of the ground terminals 2G in each row may be set according to actual requirements, and is not limited.

As shown in fig. 5 and 6, each of the first terminals 2 includes a first main body portion 21, a first abutting arm 22 and a first soldering portion 23, the first main body portion 21 is fixed to the first terminal groove 11, the width of the first main body portion 21 in the arrangement direction of each row of the first terminals 2 is set as a first width W1, the first abutting arm 22 is formed by bending and extending the first main body portion 21 upwards, the upper end of the first abutting arm 22 is used for abutting the chip module 200 upwards, and the first soldering portion 23 is formed by extending the first main body portion 21 downwards for soldering to the circuit board 300. From a top view, an extending direction of the first abutting arm 22 forms an angle with an arrangement direction of each row of the first terminals 2, in this embodiment, each row of the first terminals 2 is arranged along the left-right direction, and the first abutting arm 22 extends along the front-back direction.

As shown in fig. 6, the first terminal 2 further includes at least one through hole 24 and a through groove 25, the through hole 24 penetrates through the first main body 21, and the through groove 25 penetrates through the first abutting arm 22. In the present embodiment, the number of the through holes 24 is set to one, and in other embodiments, the required number of the through holes 24 may be set as needed.

As shown in fig. 5, 8, and 9, in the second region B, the plurality of second terminals 3 are arranged in a plurality of rows in the left-right direction, a plurality of second terminals 3 are arranged in each row, and the second terminals 3 in the front row are arranged in a staggered manner from the second terminals 3 in the rear row. The pitch between two adjacent second terminals 3 in the same row is set to a second pitch D2, and the first pitch D1 is larger than the second pitch D2.

As shown in fig. 7 to 9, the plurality of second terminals 3 include a plurality of single-ended signal terminals 3S and a plurality of ground terminals 3G, the single-ended signal terminals 3S and the ground terminals 3G have the same structure, and the distance between every two adjacent second terminals 3 in each row of the second terminals 3 is the same. In this embodiment, each row of the second terminals 3 includes a plurality of the single-ended signal terminals 3S and a plurality of the ground terminals 3G, and one of the ground terminals 3G is disposed on two opposite sides of each single-ended signal terminal 3S in the same row.

As shown in fig. 2, 9 and 10, each of the second terminals 3 includes a second main body portion 31, a second abutting arm 32 and a second soldering portion 33, the second main body portion 31 is fixed in the second terminal groove 12, the width of the second main body portion 31 in the arrangement direction of each row of the second terminals 3 is set as a second width W2, the first width W1 is greater than the second width W2, the second abutting arm 32 is formed by bending and extending the second main body portion 31 upward, the upper end of the second abutting arm 32 is used for abutting the chip module 200 upward, and the second soldering portion 33 is formed by extending the second main body portion 31 downward for soldering to the circuit board 300. From overlooking, the extending direction of the second abutting arm 32 forms an angle with the arrangement direction of each row of the second terminals 3, the arrangement direction of the first terminals 2 is not parallel to the arrangement direction of the second terminals 3, and forms an angle, in this embodiment, each row of the second terminals 3 is arranged along the front-back direction, the second abutting arm 32 extends along the left-right direction, and the arrangement direction of the first terminals 2 is perpendicular to the arrangement direction of the second terminals 3.

As shown in fig. 4, 11, and 12, in the third region C, a plurality of the third terminals 4 are also provided in a plurality of rows in the left-right direction, and a plurality of the third terminals 4 are provided in each row. The distance between two adjacent third terminals 4 in the same row is set as a third distance D3, and the third distance D3 is larger than the first distance D1.

As shown in fig. 2, 6 and 10, the second terminal 3 has a different structure from the first terminal 2. The differential signal terminal 2S of the first terminal 2 is used for transmitting a high-speed signal, the single-ended signal terminal 3S of the second terminal 3 is used for transmitting a low-speed signal, and the third terminal 4 is a power supply terminal and is used for transmitting a power supply signal.

As shown in fig. 1 and 2, the extending directions of the plurality of first abutting arms 22 in each first area a are oppositely arranged with respect to the second center line L2, and the extending directions of the plurality of second abutting arms 32 in two second areas B are oppositely arranged with respect to the first center line L1. In this embodiment, the first contact arms 22 located on both the front and rear sides of the second center line L2 extend toward the second center line L2, and the second contact arms 32 located on both the left and right sides of the first center line L1 extend toward the first center line L1. In other embodiments, the first abutting arms 22 located at the front and rear sides of the second center line L2 may extend in a direction away from the second center line L2, and the second abutting arms 32 located at the left and right sides of the first center line L1 may extend in a direction away from the first center line L1, as required.

As shown in fig. 13, in another embodiment of the electrical connector 100 of the present invention, the insulative housing 1 of the electrical connector 100 is provided with only two first areas a and one second area B, the two first areas a are provided on the left and right sides of the first center line L1, the extending direction of the second contact arms 32 in the second area B is opposite to the first center line L1, the insulative housing 1 is not provided with the third area C for transmitting the power signal, the structure of the first terminal 2 is the same as that of the second terminal 3, the relationship between the differential signal terminal 2S and the ground terminal 2G in the first area a, the relationship between the second terminal 3 in the second area B, and the relationship between the first terminal 2 and the second terminal 3 in the second area B in the first area a are the same as those in the first embodiment, reference may be made to the first embodiment, which is not repeated herein.

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

1. the insulating body 1 is divided into the first area a and the second area B, the differential signal terminal 2S of the first area a is used for transmitting a high-speed signal, and the single-ended signal terminal 3S of the second area B is used for transmitting a low-speed signal, so that the electrical connector 100 can simultaneously transmit a high-speed differential signal and a low-speed single-ended signal, a space for arranging a plurality of different electrical connectors 100 on the circuit board 300 is saved, and the degree of integration of the electrical connector 100 is increased; meanwhile, the distance between each pair of differential signal terminals 2S is greater than the distance between two adjacent second terminals 3 in the same row, so that the partition is definite, unnecessary space waste is reduced, the space utilization rate of the electric connector 100 is increased, more terminals can be arranged, intensive distribution is realized, or the insulation body 1 is provided with the same number of second terminals 3, the occupied space of the second area B is reduced, the space of the insulation body 1 is reduced, and the miniaturization development of electronic equipment is facilitated.

2. The width of the first main body 21 of the first terminal 2 in the arrangement direction thereof is widened relative to the width of the second main body 31 of the second terminal 3 in the arrangement direction thereof, and the first terminal 2 is provided with the through hole 24 penetrating through the first main body 21, so that the performance of the first terminal 2 for transmitting high-speed signals can be satisfied, and the space occupancy rate and the manufacturing cost of the second terminal 3 can be reduced.

3. The extending directions of the first abutting arms 22 are opposite to each other with respect to the second center line L2, and the extending directions of the second abutting arms 32 are opposite to each other with respect to the first center line L1, so that the first terminals 2 and the second terminals 3 are stressed in a balanced manner, and the occurrence probability of excessive slippage of the chip module 200 in one direction due to unbalanced stress is reduced.

4. The heat generated by the third terminals 4 when loaded is higher than the heat generated by the differential signal terminals 2S and higher than the heat generated by the second terminals 3, and the distance between two adjacent third terminals 4 in the same row is larger than the distance between each pair of differential signal terminals 2S and larger than the distance between two adjacent second terminals 3 in the same row, which is beneficial to heat dissipation of the electrical connector 100 and prevents the temperature of the electrical connector 100 in a loaded state from being too high.

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 (15)

1. An electrical connector for electrically connecting a chip module and a circuit board, comprising:

the insulating body is provided with at least one first area and at least one second area, the insulating body is provided with a plurality of first terminal grooves which penetrate through the insulating body from top to bottom in the first area, and a plurality of second terminal grooves which penetrate through the insulating body from top to bottom in the second area;

a plurality of first terminals received in the plurality of first terminal grooves, the plurality of first terminals being arranged in a plurality of rows, the plurality of first terminals including a plurality of pairs of differential signal terminals and a plurality of ground terminals, each pair of differential signal terminals being configured to transmit a high-speed signal;

a plurality of second terminals accommodated in the plurality of second terminal grooves, the plurality of second terminals being arranged in a plurality of rows, the plurality of second terminals including a plurality of single-ended signal terminals for transmitting low-speed signals;

the spacing between each pair of the differential signal terminals is larger than the spacing between two adjacent second terminals in the same row.

2. The electrical connector of claim 1, wherein: the differential signal terminal and the ground terminal in the first terminal have the same structure, and the first terminal and the second terminal have different structures.

3. The electrical connector of claim 1, wherein: and one of the ground terminals is arranged on each of two opposite sides of each pair of the differential signal terminals, and the spacing between each pair of the differential signal terminals is equal to the spacing between one of the differential signal terminals and the adjacent ground terminal in the same row.

4. The electrical connector of claim 3, wherein: in the first region, each of the first terminals of the front row and each of the first terminals of the rear row are aligned in a front-rear direction, and in the second region, the second terminals of the front row and the second terminals of the rear row are arranged offset in a front-rear direction.

5. The electrical connector of claim 1, wherein: each first terminal comprises a first main body part fixedly held in the first terminal groove, each second terminal comprises a second main body part fixedly held in the second terminal groove, the first main body part is wider than the second main body part, and the first terminal is provided with at least one through hole penetrating through the first main body part.

6. The electrical connector of claim 1, wherein: the insulating body further comprises at least one third area, a plurality of third terminal grooves which penetrate through the insulating body up and down are formed in the third area, the plurality of third terminals are contained in the plurality of third terminal grooves, and the third terminals are power supply terminals for transmitting power.

7. The electrical connector of claim 6, wherein: the plurality of third terminals are arranged in a plurality of rows in the third region, and the spacing between two adjacent third terminals in the same row is larger than the spacing between each pair of differential signal terminals.

8. The electrical connector of claim 6, wherein: the third area is integrally arranged on the insulating body or detachably fixed on the insulating body.

9. The electrical connector of claim 1, wherein: the insulation body comprises a first central line and a second central line, the first central line extends along a front-back direction, the second central line extends along a left-right direction, the insulation body is provided with two first areas, the two first areas are arranged on the left side and the right side of the first central line, and the first areas and the second areas are arranged on the insulation body in an integrated structure.

10. The electrical connector of claim 9, wherein: the two first areas are arranged in bilateral symmetry about the first central line.

11. The electrical connector of claim 9, wherein: the insulating body is provided with only one second area, and the second areas are arranged in bilateral symmetry with respect to the first center line.

12. The electrical connector of claim 9, wherein: each first area is arranged in front-back symmetry relative to the second central line.

13. The electrical connector of claim 9, wherein: each first terminal includes the fixing in a first main part of first terminal groove and certainly a first butt arm that first main part extends, each second terminal including the fixing in a second main part of second terminal groove and certainly a second butt arm that the second main part extends, first butt arm with second butt arm all is used for the butt the chip module, at each a plurality of in the first region the extending direction of first butt arm is about the opposite setting of second central line, a plurality of the extending direction of second butt arm is about the opposite setting of first central line.

14. The electrical connector of claim 1, wherein: each first terminal includes the fixing in a first main part of first terminal groove and certainly a first butt arm that first main part extends, each second terminal including the fixing in a second main part of second terminal groove and certainly a second butt arm that the second main part extends, first butt arm with second butt arm all is used for the butt the chip module, from overlooking the angle, the extending direction of first butt arm and every row the direction of arranging of first terminal become an angle, the extending direction of second butt arm and every row the direction of arranging of second terminal become an angle, the direction of arranging of first terminal with the direction of arranging of second terminal is not parallel and become an angle.

15. The electrical connector of claim 1, wherein: the plurality of second terminals comprise a plurality of ground terminals, each row of the second terminals is provided with a plurality of single-ended signal terminals and a plurality of ground terminals, and the distance between every two adjacent second terminals in each row of the second terminals is the same.

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