Electric connector

Abstract

The utility model discloses an electric connector. The electric connector comprises an insulating body; the multiple pairs of differential signal terminals are arranged in the left-right direction and are contained in the insulation body respectively, each differential signal terminal is provided with a head part, the head part comprises a contact part and a side part which are arranged in the left-right direction, the contact part is used for making contact with a signal butt joint part of a butt joint element, and the side part is used for making contact with the signal butt joint part of the butt joint element. The center line of the contact part is closer to the center line of the corresponding signal butt joint part than the center line of the head part. For each pair of differential signal terminals, the two side portions are located between the two contact portions in the left-right direction, and the distance between the center lines of the two signal butt joint portions making contact with the two contact portions is larger than the distance between the center lines of the two head portions, that is, the two head portions of the pair of differential signal terminals form tight coupling. Therefore, the distance between the heads of the two pairs of differential signal terminals is increased, and mutual crosstalk between the two pairs of differential signal terminals is reduced.

Description

[Technical field]

[0001] The utility model relates to an electric connector, in particular to an electric connector for improving the mutual crosstalk between differential signal terminals. [Background technology]

[0002] A conventional electrical connector has multiple pairs of differential signal terminals and multiple ground terminals arranged in a left-right direction, each differential signal terminal has a contact portion, each ground terminal has an abutment portion, the contact portion is aligned with and in contact with a signal pad of an electronic card, and the abutment portion is aligned with and in contact with a ground pad of the electronic card. The distance between the two contact portions of each pair of differential signal terminals in the left-right direction is equal to the distance between the contact portion and the adjacent abutment portion. Since there is no tight coupling between the two contact portions of each pair of differential signal terminals, the mutual inductance between the two pairs of differential signal terminals on the left and right increases, and the mutual crosstalk between the two pairs of differential signal terminals also increases, affecting the transmission of high-frequency signals. [Contents of the utility model]

[0003] The invention aims to provide an electrical connector which shortens the distance between two heads of a pair of differential signal terminals and improves crosstalk.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An electrical connector comprises: an insulating body; a plurality of pairs of differential signal terminals arranged along the left-right direction, respectively accommodated in the insulating body, each differential signal terminal having a head, the head comprising a contact portion and a side portion arranged on the left and right, the contact portion being used to contact with a signal docking portion of a docking element, the center line of the contact portion being closer to the center line of the corresponding signal docking portion than the center line of the head; for each pair of differential signal terminals, the side portions are located between the two contact portions along the left-right direction, and the distance between the center lines of the two signal docking portions in contact with the two contact portions is greater than the distance between the center lines of the two heads.

[0006] Furthermore, each differential signal terminal also includes a conductive portion for conductively connecting to a circuit board. For each pair of differential signal terminals, the distance between the center lines of the two conductive portions is greater than or equal to the distance between the center lines of the two heads.

[0007] Furthermore, the end of the head has an inclined surface; the insulating body is provided with an inclined stop surface corresponding to the inclined surface, and the stop surface stops the inclined surface from moving in the contact direction of the contact part contacting the docking element.

[0008] Furthermore, a grounding terminal is respectively provided on the left and right sides of each pair of differential signal terminals, and each grounding terminal has an abutment portion for contacting the docking element. For each pair of differential signal terminals, the spacing between the head of the left differential signal terminal and its adjacent abutment portion is equal to the spacing between the head of the right differential signal terminal and its adjacent abutment portion.

[0009] Furthermore, it is characterized in that: the contact portion protrudes from the side portion along the contact direction in which it contacts the docking element, and a gap is provided between the contact portion and the side portion along the left-right projection.

[0010] Furthermore, for each pair of differential signal terminals, the spacing between the two side portions is smaller than the spacing between the two signal docking portions contacted by the two contact portions arranged on the left and right sides thereof.

[0011] The utility model also provides the following technical solutions:

[0012] An electrical connector comprises: an insulating body; a plurality of pairs of differential signal terminals and a plurality of grounding terminals arranged in a left-right direction and respectively accommodated in the insulating body; each grounding terminal has an abutment portion for contacting a docking element; each differential signal terminal comprises a head portion, the head portion comprises a contact portion and a side portion arranged in the left and right directions, the contact portion being used to contact the docking element; for left-right adjacent differential signal terminals and grounding terminals, a distance between a center line of the contact portion and a center line of the abutment portion is smaller than a distance between a center line of the head portion and a center line of the abutment portion; for each pair of differential signal terminals, the two side portions are located between the two contact portions in the left-right direction, and the spacing between the contact portion of the left differential signal terminal and its adjacent abutment portion is equal to the spacing between the contact portion of the right differential signal terminal and its adjacent abutment portion.

[0013] Furthermore, the distance between the two contact portions of each pair of differential signal terminals is equal to the distance between the contact portion and its adjacent abutting portion.

[0014] Further, the docking element has a signal docking portion in contact with the contact portion, and a center line of the contact portion is aligned with a center line of the signal docking portion.

[0015] Furthermore, each differential signal terminal further includes a conductive portion for conductively connecting with a circuit board, and a center line of the contact portion of each differential signal terminal is aligned with a center line of the conductive portion.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the distance between the center lines of the two signal docking parts contacted by the two contact parts of a pair of differential signal terminals is greater than the distance between the center lines of the two heads; or, the distance between the center line of the contact part and the center line of the abutting part is smaller than the distance between the center line of the head and the center line of the abutting part, that is, the two heads of a pair of differential signal terminals form a tight coupling, so the distance between the heads of the two pairs of differential signal terminals is increased, thereby reducing the mutual crosstalk between the two pairs of differential signal terminals.

Brief Description of the Drawings

[0017] Figure 1 It is a three-dimensional exploded view of the electrical connector, the docking element and the circuit board of the utility model;

[0018] Figure 2 It is a cross-sectional view of the electrical connector of the utility model before being plugged into a docking element;

[0019] Figure 3 It is a cross-sectional view of the electrical connector of the utility model after being plugged into a docking element;

[0020] Figure 4 It is a plan view of the differential signal terminal and the ground terminal of the utility model after they are in contact with the docking component and the circuit board respectively.

[0021] Description of the accompanying drawings for the specific implementation:

[0022] [Specific implementation method]

[0023] In order to facilitate a better understanding of the purpose, structure, features and functions of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.

[0024] For the sake of accuracy of description, all directions involved in this article are as follows: the X-axis extends in the front-to-back direction (where the positive direction of the X-axis is the front), the Y-axis extends in the left-to-right direction (where the positive direction of the Y-axis is the right), and the Z-axis extends in the up-down direction (where the positive direction of the Z-axis is the top).

[0025] like Figure 1 , Figure 3As shown, an electrical connector 100 of the present invention is used to electrically connect a docking component 200 and a circuit board 300. The docking component 200 has multiple signal docking parts and multiple grounding docking parts (in this embodiment, the docking component 200 is an electronic card, so the signal docking part is called a signal pad 201, and the grounding docking part is called a grounding pad 202; in other embodiments, the docking component 200 can also be a docking connector); the electrical connector 100 includes an insulating body 1, multiple pairs of differential signal terminals 2 and multiple grounding terminals 3 arranged in the left-right direction, the insulating body 1 has an upwardly penetrating plug-in cavity 11 and multiple receiving grooves 12 provided on the front and rear sides of the plug-in cavity 11, the docking component 200 is plugged into the plug-in cavity 11 from top to bottom, and the receiving grooves 12 are respectively connected to the plug-in cavity 11, and the receiving grooves 12 are used to respectively correspond to the differential signal terminals 2 and the grounding terminals 3, and the inner wall of each receiving groove 12 is provided with an inclined stop surface 121.

[0026] like Figure 1 , Figure 2 As shown, each differential signal terminal 2 includes a head 21, a conductive portion 22 and a base 23 connecting the head 21 and the conductive portion 22. The head 21 includes a contact portion 211 and a side portion 212 arranged on the left and right, and a connecting portion 213 connecting the upper end of the contact portion 211 and the upper end of the side portion 212. The contact portion 211 is used to contact the signal pad 201. The contact portion 211 protrudes from the side portion 212 along the contact direction in which it contacts the docking element 200. In the projection along the left and right directions, there is a gap Q (as shown in FIG. 1 ) between the contact portion 211 and the side portion 212. Figure 2 As shown), the side of the contact portion 211 is aligned with the corresponding side of the head 21, and the center line L1 of the contact portion 211 is closer to the center line L3 of the corresponding signal pad 201 than the center line L2 of the head 21 (in this embodiment, as shown Figure 4 As shown, the center line of the contact portion 211 is aligned with the center line of the corresponding signal pad 201), for each pair of differential signal terminals 2, the two side portions 212 along the left-right direction are located between the two contact portions 211, and the distance between the center lines L3 of the two signal pads 201 contacting the two contact portions 211 is greater than the distance between the center lines L2 of the two head portions 21 (as shown in FIG. Figure 4As shown, that is, W1>W2); the side portion 212 is in a flat plate shape, and the side edges of the side portion 212 are aligned with the corresponding side edges of the head 21. In this embodiment, the spacing A between the two side portions 212 is smaller than the spacing B between the two signal pads 201 contacted by the two contact portions 211 arranged on the left and right sides thereof (in other embodiments, the spacing between the two side portions 212 may also be equal to the spacing between the two signal pads 201); the end of the connecting portion 213 has an inclined surface 2131. Before docking, the stopping surface 121 stops the inclined surface 2131 from moving in the contact direction of the contact portion 211 contacting the docking element 200 (as shown in FIG. 1 ). Figure 2 The conductive portion 22 is used for conductive connection with the circuit board 300. For each pair of differential signal terminals 2, the distance between the center lines L1 of the two contact portions 211 is equal to the distance between the center lines L4 of the two conductive portions 22 (i.e., the center line L1 of the contact portion 211 of each differential signal terminal 2 is aligned with the center line L4 of the conductive portion 22). Therefore, the distance between the center lines L4 of the two conductive portions 22 is greater than the distance between the center lines L2 of the two heads 21 (as shown in FIG. Figure 4 As shown, that is, W3>W2), in other embodiments, the distance between the center lines L4 of the two conductive portions 22 can also be equal to the distance between the center lines L2 of the two head portions 21; the base 23 is provided with a plurality of interference portions H, and the interference portions H interfere with the inner wall of the receiving groove 12 to fix the differential signal terminal 2 in the receiving groove 12.

[0027] like Figure 1 , Figure 4 As shown, each grounding terminal 3 includes a contact portion 31, a welding portion 32 and a main body portion 33 connecting the contact portion 31 and the welding portion 32. The contact portion 31 is used to contact the ground pad 202 of the docking element 200. The distance between the center lines L1 of the two adjacent contact portions 211 of each pair of differential signal terminals 2 is equal to the distance between the center line L1 of the contact portion 211 and the center line L5 of the adjacent contact portion 31 (as shown in FIG. Figure 4 As shown, that is, W1=W4); the distance between the center line L1 of the contact portion 211 and the center line L5 of the abutment portion 31 is smaller than the distance between the center line L2 of the head 21 and the center line L5 of the abutment portion 31 (as shown in Figure 4As shown, that is, W4 < W5), and at the same time, for each pair of differential signal terminals 2, the distance C between the contact portion 211 of the left differential signal terminal 2 and its adjacent abutting portion 31 is equal to the distance D between the contact portion 211 of the right differential signal terminal 2 and its adjacent abutting portion 31; the main body portion 33 has a plurality of interference portions H for interference-fitting with the inner wall of the receiving groove 12 to fix the ground terminal 3 in the receiving groove 12; the welding portion 32 is used for welding on the circuit board 300, and the distance between two adjacent connection portions 22 of each pair of differential signal terminals 2 is equal to the distance between the connection portion 22 and its adjacent welding portion 32 (as Figure 4 shown, that is, W3 = W6).

[0028] In summary, the present utility model has the following beneficial effects:

[0029] 1. The distance between the center lines L3 of the two signal docking portions 201 contacted by the two contact portions 211 of a pair of differential signal terminals 2 is greater than the distance between the center lines L2 of the two heads 21; or, the distance between the center line L1 of the contact portion 211 and the center line L5 of the abutting portion 31 is less than the distance between the center line L2 of the head 21 and the center line L5 of the abutting portion 31, that is, the two heads 21 of a pair of differential signal terminals 2 form a tight coupling, so the distance between the heads 21 of two pairs of differential signal terminals 2 increases, thereby reducing the mutual crosstalk between the two pairs of differential signal terminals 2. The center line L1 of the contact portion 211 is closer to the center line L3 of the corresponding signal docking portion 201 than the center line L2 of the head 21, that is, in the case where the two heads 21 of each pair of differential signal terminals 2 are tightly coupled, it can also ensure that the contact portion 211 can stably contact the signal docking portion.

[0030] 2. The distance between the two contact portions 211 of each pair of differential signal terminals 2 is equal to the distance between the contact portion 211 and its adjacent abutting portion 31, that is, in the case where the two heads 21 of each pair of differential signal terminals 2 are tightly coupled, it can also ensure that the differential signal terminals 2 and the ground terminal 3 stably contact the standard electronic card.

[0031] The above detailed description is only for the description of the preferred embodiments of the present utility model, and does not limit the patent scope of the present utility model. Therefore, all equivalent technical changes made by using the content of this creation specification and drawings are included in the patent scope of this creation.

Claims

1. An electrical connector, characterized in that: include: an insulating body; A plurality of pairs of differential signal terminals arranged along the left-right direction are respectively accommodated in the insulating body, each differential signal terminal having a head, the head comprising a contact portion and a side portion arranged on the left and right sides, the contact portion being used to contact the signal docking portion of the docking element, the center line of the contact portion being closer to the center line of the corresponding signal docking portion than the center line of the head; for each pair of differential signal terminals, the side portions along the left-right direction are located between the two contact portions, and the distance between the center lines of the two signal docking portions in contact with the two contact portions is greater than the distance between the center lines of the two heads.

2. The electrical connector according to claim 1, wherein: Each differential signal terminal further includes a conductive portion for conductively connecting with a circuit board. For each pair of differential signal terminals, the distance between the center lines of the two conductive portions is greater than or equal to the distance between the center lines of the two heads.

3. The electrical connector according to claim 1, wherein: The end of the head has an inclined surface; the insulating body is provided with an inclined stop surface corresponding to the inclined surface, and the stop surface stops the inclined surface from moving in the contact direction of the contact part to contact the docking element.

4. The electrical connector according to claim 1, wherein: A grounding terminal is also provided on the left and right sides of each pair of differential signal terminals, each grounding terminal has an abutment portion for contacting the docking element. For each pair of differential signal terminals, the spacing between the head of the left differential signal terminal and its adjacent abutment portion is equal to the spacing between the head of the right differential signal terminal and its adjacent abutment portion.

5. The electrical connector according to claim 1, wherein: The contact portion protrudes from the side portion along the contact direction in which the contact portion contacts the docking element, and a gap is provided between the contact portion and the side portion in a projection along the left-right direction.

6. The electrical connector according to claim 1, wherein: For each pair of differential signal terminals, the spacing between the two side portions is smaller than the spacing between the two signal docking portions contacting the two contact portions disposed on the left and right sides thereof.

7. An electrical connector, characterized in that: include: an insulating body; A plurality of pairs of differential signal terminals and a plurality of grounding terminals arranged in the left-right direction are respectively accommodated in the insulating body; each grounding terminal has an abutting portion for contacting a docking element; each differential signal terminal includes a head, the head includes a contact portion and a side portion arranged on the left and right, the contact portion is used to contact the docking element; for the left and right adjacent differential signal terminals and grounding terminals, the distance between the center line of the contact portion and the center line of the abutting portion is smaller than the distance between the center line of the head and the center line of the abutting portion; for each pair of differential signal terminals, the two side portions in the left-right direction are located between the two contact portions, and the spacing between the contact portion of the left differential signal terminal and its adjacent abutting portion is equal to the spacing between the contact portion of the right differential signal terminal and its adjacent abutting portion.

8. The electrical connector according to claim 7, wherein: The distance between the two contact portions of each pair of differential signal terminals is equal to the distance between the contact portion and its adjacent abutting portion.

9. The electrical connector according to claim 7, wherein: The docking element has a signal docking portion in contact with the contact portion, and a center line of the contact portion is aligned with a center line of the signal docking portion.

10. The electrical connector according to claim 7, wherein: Each differential signal terminal further includes a conductive portion for conductively connecting with a circuit board, and the center line of the contact portion of each differential signal terminal is aligned with the center line of the conductive portion.

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