Electrical connector

Abstract

An electrical connector includes a first insulating housing, a first terminal set disposed in the first insulating housing, a second insulating housing engaged with the first insulating housing, a second terminal set disposed in the second insulating housing and including a plurality of signal terminals and ground terminals, the two terminal sets being left-right symmetrical, a first electromagnetic shield fixed to the first insulating housing, and a second electromagnetic shield fixed to the second insulating housing and engaged with the first electromagnetic shield, the two electromagnetic shields being left-right symmetrical and alternately connected by a plurality of shield portions and connecting portions, the shield portions being flat plates overlapping each other and protruding from the two insulating housings, and the connecting portions being U-shaped structures extending leftward and rightward from the shield portions of the two electromagnetic shields and contacting the ground terminals.

Description

Technical Field

[0001] This utility model relates to an electrical connector, and more particularly to an electrical connector that can operate stably in a high-frequency environment. Background Technology

[0002] In recent years, the booming development of the electronics industry and consumers' preference for lighter, thinner, smaller, and more portable electronic products have driven small electronic products to become the mainstream in the market. For these reasons, electronic devices are becoming increasingly smaller, leading to the miniaturization of circuit boards and corresponding connectors. However, with the miniaturization of circuits, the distance between terminals inside electronic components such as connectors is shortened, resulting in more frequent coupling between the electric fields of the terminals. This contributes to the generation of more noise signals and exacerbates crosstalk problems when transmitting high-frequency signals, causing connectors to be unable to operate stably in high-frequency environments.

[0003] Therefore, it is necessary to provide an electrical connector with better resistance to high-frequency noise and crosstalk. Summary of the Invention

[0004] The purpose of this utility model is to provide an electrical connector, comprising: a first insulating base, the first insulating base being elongated; a first terminal group, the first terminal group being disposed within the first insulating base and including a plurality of signal terminals and a plurality of ground terminals, two adjacent signal terminals forming a differential terminal pair, the differential terminal pair being disposed between two ground terminals; a second insulating base, the second insulating base being elongated and engaging with the first insulating base; a second terminal group, the second terminal group being disposed within the second insulating base and including a plurality of signal terminals and a plurality of ground terminals, and the second terminal group and all terminals of the first terminal group being arranged symmetrically from left to right; and a first electromagnetic shielding member fixed to the first insulating base. The first insulating base contains a second electromagnetic shield, which is fixed in the second insulating base and joined to the first electromagnetic shield. The first electromagnetic shield and the second electromagnetic shield are arranged symmetrically from left to right and are configured to be formed by alternating connections of a plurality of shielding parts and connecting parts. The shielding parts are configured as plate structures that cooperate with each other and the height of the shielding parts is greater than the height of the first insulating base and the second insulating base, so that the top and bottom ends of the shielding parts protrude from the first insulating base and the second insulating base, respectively. The connecting parts are configured as U-shaped structures that extend from the shielding parts of the first electromagnetic shield and the second electromagnetic shield to the left and right sides, respectively, and are electrically connected to the grounding terminal.

[0005] In some embodiments, the shielding part is a rectangular plate, and two protrusions are respectively provided at the diagonal positions of the shielding part, and the positions of the protrusions of the shielding part of the first electromagnetic shielding member and the protrusions of the shielding part of the second electromagnetic shielding member are opposite vertically.

[0006] In some embodiments, the signal terminal and the ground terminal each include a fixing portion and a welding portion extending downward from the fixing portion. The welding portion extends downward and then bends outward and extends further. The distance by which the shielding portion extends downward does not exceed the bend of the welding portion.

[0007] In some embodiments, the shielding portion extends approximately equally to the upper and lower sides.

[0008] In some embodiments, the outwardly extending end of the connecting portion is provided with an arc-shaped contact segment that is electrically connected to the fixing portion of the grounding terminal.

[0009] In some embodiments, the adjacent surfaces of the first insulating seat and the second insulating seat are respectively provided with a groove, the grooves respectively penetrating the top and bottom surfaces of the first insulating seat and the second insulating seat, and a plurality of receiving slots are respectively provided on the bottom surface of the grooves, the receiving slots extending to the left and right and penetrating the first insulating seat and the second insulating seat, the shielding part protruding from the grooves from the top and bottom surfaces of the first insulating seat and the second insulating seat, and the connecting part extending to the left and right sides in the receiving slots.

[0010] As described above, the electrical connector of this utility model is provided with shielding portions of both the first electromagnetic shield and the second electromagnetic shield. The shielding portions protrude from the top and bottom surfaces of the first and second insulating bases to separate the electric fields of the differential terminal pairs in the first and second terminal groups, thereby reducing the coupling between the electric fields. The first and second electromagnetic shields are provided with connecting portions, which are alternately arranged with the shielding portions and electrically connected to all the grounding terminals to eliminate the potential difference between the grounding terminals. This improves the crosstalk problem generated when transmitting high-frequency signals and enhances the working capability of the electrical connector in high-frequency environments. Attached Figure Description

[0011] To make the above and other objects, features, advantages and embodiments of this utility model more apparent and understandable, the contents of this case can be better understood when read in conjunction with the accompanying drawings.

[0012] Figure 1 This is a perspective view of the electrical connector of this utility model.

[0013] Figure 2This is an exploded view of the electrical connector of this utility model.

[0014] Figure 3 This is an exploded view of the terminal assembly of this utility model.

[0015] Figure 4 This is an exploded view of the terminal fixing bracket assembly of this utility model.

[0016] Figure 5 This is a partial perspective view of the terminal assembly of this utility model.

[0017] Figure 6 This is a perspective view of the shielding unit of this utility model.

[0018] Figure 7 The shielding unit of this utility model is along Figure 6 A magnified view of part X.

[0019] Figure 8 This is a left view of the terminal assembly of this utility model.

[0020] Figure 9 This utility model terminal assembly is along Figure 8 A cross-sectional view of line AA.

[0021] Figure 10 This utility model terminal assembly is along Figure 8 A cross-sectional view of the BB line.

[0022] Figure 11 The terminal assembly of this utility model is along Figure 8 A cross-sectional view of the CC line.

[0023] Figure 12 This utility model is a terminal assembly. Figure 11 A magnified view of the Y-section in the middle.

[0024] Figure 13 This utility model is a terminal assembly. Figure 11 A magnified view of the Z-section in the middle. Detailed Implementation

[0025] To illustrate in detail the technical content, structural features, objectives, and effects of the electrical connector of this utility model, the following embodiments are provided in conjunction with the accompanying drawings.

[0026] Please see Figure 1 and Figure 2 The present invention provides an electrical connector 200 comprising a housing 50, an accommodating space 55 disposed inside the housing 50, an insulating body 40 disposed in the accommodating space 55, and a terminal assembly 100 disposed inside the insulating body 40.

[0027] Please see again Figure 3 The terminal assembly 100 includes a terminal holder assembly 10 and a terminal group 20 fixed in the terminal holder assembly 10. The terminal holder assembly 10 includes a first insulating base 11, a second insulating base 12 assembled with the first insulating base 11, and a shielding unit 30 sandwiched between the first insulating base 11 and the second insulating base 12. The terminal group 20 includes a first terminal group 21 passing through the first insulating base 11 and a second terminal group 22 passing through the second insulating base 12. The shielding unit 30 includes a first electromagnetic shielding element 31 fixed in the first insulating base 11 and a second electromagnetic shielding element 32 fixed in the second insulating base 12.

[0028] Please see again Figures 3 to 4 The terminal fixing assembly 10 is rectangular, and the first insulating base 11 and the second insulating base 12 are generally elongated and symmetrically arranged. The adjacent surfaces of the first insulating base 11 and the second insulating base 12 are respectively provided with grooves 111 and 121, which penetrate the top and bottom surfaces of the first insulating base 11 and the second insulating base 12 respectively. A plurality of receiving slots 1111 and 1211 are respectively provided on the bottom surface of the grooves 111 and 121, which extend to the left and right respectively. The shielding unit 30 is clamped and fixed in the receiving slots 1111 and 1211, and the shielding unit 30 protrudes from the grooves 111 and 121, extending beyond the top and bottom surfaces of both the first insulating base 11 and the second insulating base 12.

[0029] Please see Figure 3 and Figure 5 Both the first terminal group 21 and the second terminal group 22 include a plurality of signal terminals 201 and a plurality of ground terminals 202. The signal terminals 201 and the ground terminals 202 are spaced apart from each other, and two signal terminals 201 form a differential terminal pair. The two ground terminals 202 are located on both sides of a differential terminal pair.

[0030] Continue reading Figure 3 and Figure 5 Both the signal terminal 201 and the ground terminal 202 are elongated strips and each includes a fixing part 201a and 202a fixed and covered in the terminal fixing base assembly 10, a mating part 201b and 202b extending upward from the fixing part 201a and 202a, and a welding part 201c and 202c extending downward from the fixing part 201a and 202a, respectively. The welding parts 201c and 202c extend downward and then bend outward and extend to be welded to a circuit board.

[0031] Please see Figure 3 After the first electromagnetic shield 31 and the second electromagnetic shield 32 are joined together, they are clamped and fixed in the terminal fixing base assembly 10, and electrically connected between the grounding terminal 202 in the first terminal group 21 and the second terminal group 22.

[0032] Please see again Figure 4 and Figures 6 to 13 The first electromagnetic shielding component 31 and the second electromagnetic shielding component 32 are two symmetrically stamped metal sheets, and are formed by alternating connections of a plurality of shielding parts 311 and 321 and a plurality of connecting parts 312 and 322. The shielding parts 311 and 321 are rectangular plates that overlap and are clamped between the grooves 111 and 121. The height of the shielding parts 311 and 321 is greater than the height of the grooves 111 and 121, so that the top and bottom ends of the shielding parts 311 and 321 protrude from the top and bottom surfaces of the first insulating base 11 and the second insulating base 12, respectively. Two protrusions 3111 and 3211 are respectively provided at diagonal positions of the shielding parts 311 and 321. The positions of the protrusions 3111 and 3211 of the shielding parts 311 and 321 are opposite vertically, facilitating the overlap of the shielding parts 311 and 321. The connecting portions 312 and 322 are configured as U-shaped structures with a height less than that of the receiving grooves 1111 and 1211, extending outwards to the left and right sides from the connection surfaces of the first electromagnetic shielding member 31 and the second electromagnetic shielding member 32, respectively. The connecting portions 312 and 322 are installed in the receiving grooves 1111 and 1211, and the outwardly extending ends of the connecting portions 312 and 322 are respectively provided with arc-shaped contact sections 3121 and 3221 that are electrically connected to the grounding terminal 202.

[0033] Please see Figures 8 to 11In this preferred embodiment, all terminals in the first terminal group 21 and the second terminal group 22 are arranged symmetrically from left to right. The width of the shielding portions 311 and 321 is approximately equal to the width of a pair of differential terminals. The shielding portions 311 and 321 extend approximately equally to the upper and lower sides, and the downward extension distance of the shielding portions 311 and 321 does not exceed the bend of the welding portions 201c and 202c, so as to separate the space between the differential terminal pairs in the first terminal group 21 and the second terminal group 22, thereby isolating the electric field of the differential terminal pair in the first terminal group 21 from the electric field of the differential terminal pair in the second terminal group 22, reducing the coupling between the electric fields and suppressing the generation of noise signals. The connecting portions 312 and 322 are housed in the receiving grooves 1111 and 1211, respectively. The connecting portions 312 and 322 extend to the left and right sides in the receiving grooves 1111 and 1211, and are electrically connected to the grounding terminals 202 in the first terminal group 21 and the second terminal group 22, respectively. The contact segments 3121 and 3221 abut against the fixing portion 202a, and the distance between the center lines of two adjacent connecting portions 312 and 322 is the same as the distance between the center lines of two adjacent grounding terminals 202, so that all the grounding terminals 202 are interconnected through the shielding unit 30 and have the same potential.

[0034] In summary, the electrical connector 200 of this utility model, through the shielding portions 311 and 321 of the first electromagnetic shielding member 31 and the second electromagnetic shielding member 32, which protrude from the top and bottom surfaces of the first insulating base 11 and the second insulating base 12, separates the electric fields of all differential terminal pairs in the first terminal group 21 and the second terminal group 22, weakens the coupling phenomenon between electric fields, and thus reduces noise signals. Furthermore, through the connecting portions 312 and 322 alternately arranged with the shielding portions 311 and 321, which are housed in the receiving grooves 1111 and 1211 of the first insulating base 11 and the second insulating base 12, and electrically connect to all the grounding terminals 202 in the first terminal group 21 and the second terminal group 22, the potential difference between the grounding terminals 202 is eliminated, pushing the resonant point of crosstalk to a higher frequency. Therefore, the electrical connector 200 of this invention can effectively suppress the resonant point of crosstalk, improve the crosstalk problem of high-frequency signals, and enhance the transmission capability of high-frequency signals.

[0035] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An electrical connector, characterized in that: It comprises: a first insulating base, the first insulating base being elongated; a first terminal group, the first terminal group being disposed within the first insulating base and comprising a plurality of signal terminals and a plurality of ground terminals, two adjacent signal terminals forming a differential terminal pair, the differential terminal pair being disposed between two ground terminals; a second insulating base, the second insulating base being elongated and engaging with the first insulating base; a second terminal group, the second terminal group being disposed within the second insulating base and comprising a plurality of signal terminals and a plurality of ground terminals, and the second terminal group and all terminals in the first terminal group being arranged symmetrically from left to right; a first electromagnetic shielding member, fixed within the first insulating base, and a... The second electromagnetic shielding component is fixed in the second insulating base and joined with the first electromagnetic shielding component. The first and second electromagnetic shielding components are arranged symmetrically from left to right and are configured to be formed by alternating connections of a plurality of shielding parts and connecting parts. The shielding parts are configured as plate structures that cooperate with each other and the height of the shielding parts is greater than the height of the first and second insulating bases, so that the top and bottom ends of the shielding parts protrude from the first and second insulating bases, respectively. The connecting parts are configured as U-shaped structures that extend from the shielding parts of the first and second electromagnetic shielding components to the left and right sides, respectively, and are electrically connected to the grounding terminal.

2. The electrical connector as described in claim 1, characterized in that: The shielding part is a rectangular plate, and two protrusions are provided at opposite corners of the shielding part. The protrusions of the shielding part of the first electromagnetic shielding part and the protrusions of the shielding part of the second electromagnetic shielding part are positioned vertically opposite to each other.

3. The electrical connector as described in claim 1, characterized in that: The signal terminal and the ground terminal each include a fixing part and a welding part extending downward from the fixing part. The welding part extends downward and then bends outward and extends further. The distance that the shielding part extends downward does not exceed the bend of the welding part.

4. The electrical connector as described in claim 3, characterized in that: The shielding part extends approximately equal distances to both the upper and lower sides.

5. The electrical connector as described in claim 3, characterized in that: At the outwardly extending end of the connecting part, there is an arc-shaped contact section that is electrically connected to the fixing part of the grounding terminal.

6. The electrical connector as claimed in claim 1, characterized in that: The first insulating base and the second insulating base are respectively provided with a groove on their adjacent surfaces. The grooves penetrate the top and bottom surfaces of the first insulating base and the second insulating base respectively. A plurality of receiving slots are provided on the bottom surface of the grooves. The shielding part protrudes from the grooves from the top and bottom surfaces of the first insulating base and the second insulating base. The connecting part extends to the left and right sides in the receiving slots.

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