Electric connector

Abstract

An electric connector comprises an insulator and a plurality of terminals, the insulator comprises an upper surface, a lower surface and terminal grooves penetrating through the upper surface and the lower surface, and the terminals are arranged in the corresponding terminal grooves one by one; the plurality of terminals comprise a row of grounding terminals arranged along a first direction and a plurality of functional terminals, each functional terminal comprises a holding part and an elastic arm extending from the holding part, and the plurality of functional terminals positioned on one side of the row of grounding terminals form a first functional area; the plurality of functional terminals located on the other side of the row of grounding terminals form a second functional area, and the elastic arms of the functional terminals of the first functional area and the second functional area extend from the corresponding holding parts in the direction close to or away from the grounding terminals. According to the utility model, the functional terminals located in the first and second functional areas can perform good signal shielding through the grounding terminals, and the electric connector has good high-frequency performance.

Description

Technical Field

[0001] This utility model relates to an electrical connector. Background Technology

[0002] Patent CN112993618B discloses an electrical connector comprising an insulating body and terminals disposed on the insulating body. This connector suffers from significant signal crosstalk between adjacent signal terminals. However, electrical connectors currently under development are achieving increasingly higher transmission rates, with some connectors reaching bandwidths of up to 128Gbps. In high-frequency connectors with such high transmission speeds, the requirements for preventing crosstalk between signal terminals are becoming increasingly stringent.

[0003] Therefore, it is indeed necessary to provide an electrical connector with an improved structure to overcome the above-mentioned defects. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an electrical connector with better high-frequency performance.

[0005] To solve the above-mentioned technical problems, the present invention can adopt the following technical solution: an electrical connector, including an insulator and a plurality of terminals, wherein the insulator includes an upper surface, a lower surface and terminal slots penetrating the upper surface and the lower surface, and the terminals are disposed in the corresponding terminal slots; the plurality of terminals include a row of grounding terminals arranged along a first direction and a plurality of functional terminals, each of the functional terminals including a retaining portion and an elastic arm extending from the retaining portion, the plurality of functional terminals located on one side of the row of grounding terminals constitute a first functional area, and the plurality of functional terminals located on the other side of the row of grounding terminals constitute a second functional area, wherein the elastic arms of the functional terminals in the first functional area and the second functional area extend from the corresponding retaining portion toward the direction close to or away from the grounding terminal.

[0006] Preferably, both the first and second functional areas include multiple signal terminals spaced apart, with each signal terminal positioned opposite the corresponding grounding terminal.

[0007] Preferably, the first functional area includes two adjacent rows of functional terminals, and the two rows of functional terminals are staggered along the first direction.

[0008] Preferably, the two rows of functional terminals in the first and second functional areas adjacent to the grounding terminal are staggered along the first direction.

[0009] Preferably, the center line of the functional terminal is perpendicular to the plane where the grounding terminal is located.

[0010] Preferably, the grounding terminal is sheet-shaped and includes a vertically extending body portion and an upper elastic arm. The body portion has an upper cut surface and a lower cut surface formed along the thickness direction of the grounding terminal. The upper elastic arm extends upward from the upper cut surface and sequentially includes an upper extension portion, a lateral portion extending to the left from the upper extension portion, and an upper abutment portion extending downward from the lateral portion. When the upper elastic arm is pressed, the upper abutment portion abuts against the upper cut surface.

[0011] Preferably, the elastic arm includes an upper elastic arm extending upward from the holding portion and a lower elastic arm extending downward from the holding portion. The upper elastic arm includes an upper elastic portion, an upper contact portion, and an upper abutting portion. The upper elastic portion includes two upper support arms spaced apart from each other, and the upper abutting portion includes two upper abutting arms spaced apart from each other. The lower elastic arm sequentially includes a lower elastic portion, a lower contact portion, and a lower abutting portion. The lower elastic portion includes two lower support arms spaced apart from each other, and the lower abutting portion includes two lower abutting arms spaced apart from each other. When the upper and lower elastic arms of the functional terminal are pressed, the upper and lower abutting arms abut against each other in pairs.

[0012] Preferably, the grounding terminal is sheet-shaped and includes a vertically extending body portion and an upper elastic arm. The body portion has an upper cut surface and a lower cut surface formed along the thickness direction of the terminal. The upper elastic arm extends from the upper cut surface and is located above the body portion. The upper elastic arm can abut against the body portion when pressed. Each functional terminal includes a vertically extending retaining portion, an upper elastic arm extending upward from the retaining portion, and a lower elastic arm extending downward from the retaining portion. The retaining portion is arranged parallel to the body portion.

[0013] To solve the above-mentioned technical problems, the present invention may also adopt the following technical solution: an electrical connector, comprising an insulator and a plurality of terminals, wherein the insulator is provided with an upper surface, a lower surface and terminal slots penetrating the upper and lower surfaces, and the terminals are disposed in corresponding terminal slots. The terminals include a row of grounding terminals arranged along a first direction and functional terminals located on both sides of the row of grounding terminals. Each grounding terminal includes a vertically extending body portion and an upper elastic arm. The body portion has an upper cut surface and a lower cut surface formed along its thickness direction. The upper elastic arm extends upward and to the left from the upper cut surface, and the upper elastic arm can abut against the body portion when pressed. Each functional terminal includes a retaining portion, an upper elastic arm extending upward from the retaining portion and a lower elastic arm extending downward from the retaining portion. The center line of the functional terminal is perpendicular to the plane of the body portion.

[0014] Preferably, the upper and lower elastic arms of the functional terminals located on both sides of the grounding terminal extend from the corresponding holding portion toward the side closer to the grounding terminal.

[0015] Preferably, at least two rows of functional terminals are provided on one side of the grounding terminal, and adjacent rows of functional terminals are staggered along a first direction; each row of functional terminals includes signal terminals arranged at intervals, and the signal terminals are directly opposite the grounding terminal.

[0016] In this invention, the functional terminals located in the first and second functional areas can be effectively shielded from signals through the grounding terminal, and the electrical connector has better high-frequency performance. Attached Figure Description

[0017] Figure 1 This is a perspective view of the electrical connector of this utility model.

[0018] Figure 2 for Figure 1 Another perspective view of the electrical connector shown, in which some functional terminals and grounding terminals are separated from the insulator.

[0019] Figure 3 for Figure 1 Top view of the electrical connector shown.

[0020] Figure 4 for Figure 1 The diagram shows an exploded 3D view of the electrical connector after the insulator has been removed.

[0021] Figure 5 for Figure 2 A perspective view of the two functional terminals of the electrical connector shown.

[0022] Figure 6 for Figure 2 A perspective view of the grounding terminal of the electrical connector shown.

[0023] Figure 7 This is a perspective view of the grounding terminal in another embodiment.

[0024] Figure 8 This is a perspective view of the grounding terminal in another embodiment.

[0025] Explanation of main component symbols

[0026] Electrical connector 100, first segment 2241b, 2291b

[0027] Insulator 10, first segment 2242b, 2292b

[0028] Upper surface 11, upper elastic arm 240

[0029] Terminal slot 13 upper elastic part 241

[0030] Terminal 20 Upper support arm 2411

[0031] Grounding terminal 20G upper contact part 242

[0032] Functional terminal 20F upper support part 243

[0033] 20J Interval end, lower support arm 2431

[0034] Holding part 200 Lower elastic arm 250

[0035] Elastic arm 201 Lower elastic part 251

[0036] Body 220, Lower Support Arm 2511

[0037] Upper elastic arms 221, 221a, 221b; Lower contact portion 252

[0038] Upper extension 222 Lower support 253

[0039] Lateral sections 223, 223a, 223b, 228, 228a, 228b; Lower abutment arm 2531

[0040] Upper contact section 224, 224a, 224b; Upper island section 280

[0041] Lower elastic arms 226, 226a, 226b; upper abutment surface 281

[0042] Lower extension 227, Lower island 290

[0043] Lower abutment parts 229, 229a, 229b; Lower abutment surface 291 Detailed Implementation

[0044] See Figures 1-4 As shown, it is the electrical connector 100 disclosed in this utility model, used to electrically connect a mating element (such as a chip module) to a circuit board or connect two circuit boards. The electrical connector 100 includes an insulator 10 and a plurality of terminals 20 arranged in a matrix. The insulator 10 has an upper surface 11, a lower surface (not shown in the figure) and a terminal groove 13 that penetrates the upper surface 11 and the lower surface. The terminals 20 are disposed in the corresponding terminal grooves 13.

[0045] See Figures 3-5The plurality of terminals 20 include a row of ground terminals 20G arranged along a first direction and a plurality of functional terminals 20F, with the functional terminals 20F located on both sides of the ground terminals 20G. Each functional terminal 20F includes a retaining portion 200 and an elastic arm 201 extending from the retaining portion 200. The plurality of functional terminals 20F located on one side of the row of ground terminals 20G constitute a first functional area M1, and the plurality of functional terminals located on the other side of the row of ground terminals 20G constitute a second functional area M2. The elastic arms 201 of the functional terminals 20F in the first functional area M1 and the second functional area M2 extend from the corresponding retaining portion 200 toward a direction closer to or away from the ground terminals 20G. The first and second functional areas M1 and M2 each include a plurality of spaced signal terminals 20S, with the signal terminals 20S facing the corresponding ground terminals 20G. In this embodiment, in order to better achieve signal shielding, the ground terminals 20G are sheet-shaped, and the center line L1 of the functional terminals 20F is perpendicular to the plane where the ground terminals 20G are located.

[0046] Combination Figure 6Preferably, the grounding terminal 20G includes a vertically extending body portion 220, an upper elastic arm 221 extending upward from the body portion 220, and a lower elastic arm 226 extending downward from the body portion 220. The body portion 220 is fixed in the corresponding terminal slot 13 by hard interference between its two side edges and the inner wall surface of the terminal slot 13. The body portion 220 includes an upper cut surface, a lower cut surface, a left cut surface, a right cut surface, and two vertical side surfaces. The upper elastic arm 221 sequentially includes an upper extension portion 222 extending from the upper cut surface, a lateral portion 223 extending to the left from the upper extension portion 222, and an upper abutment portion 224 extending downward from the lateral portion 223. In this embodiment, the grounding terminal also includes an upper island portion 280 protruding upward from the upper cut surface and located below the upper elastic arm 221. The upper island portion 280 and the body portion 220 are located in the same vertical plane, and the upper island portion 280 has an upper abutment surface 281 formed along its thickness direction. The lower elastic arm 226 includes a lower extension 227 extending downward from the lower cutting surface, a lateral extension 228 extending to the left from the lower extension 227, and a lower abutment 229 extending upward from the lateral extension 228. The grounding terminal 20G also includes a lower island 290 protruding downward from the lower cutting surface and located below the lower elastic arm 226. The upper island 290 and the main body 220 are located in the same vertical plane, and the lower island 290 is provided with a lower abutment surface 291 formed along its thickness direction. Both the upper abutment surface 281 and the lower abutment surface 291 are inclined surfaces. The junction of the transverse portion 223 and the upper abutment portion 224 forms an upper contact portion, and the junction of the transverse portion 228 and the lower abutment portion 229 forms a lower contact portion. When the upper elastic arm 221 is pressed, that is, when a chip or circuit board abuts against the corresponding upper and lower contact portions, the upper abutment portion 224 abuts against the upper abutment surface 281, and the lower abutment portion 229 abuts against the lower abutment surface 291. Furthermore, to facilitate the installation of the grounding terminal 20G, the grounding terminal 20G also includes a strip connecting portion 270. A row of grounding terminals is connected to a strip through the strip connecting portion 270 to form a whole, allowing the grounding terminal 20G to be inserted into the insulating body 10 in one go. The strip connecting portion 270 extends upward from the upper cut surface of the body portion 220 and is located on the side of the upper island portion 281 away from the upper edge portion 222, and the strip connecting portion 270 is spaced apart from the upper abutment surface 281.

[0047] Understandably, in other embodiments, the sheet-like grounding terminal 20G may also be configured in other styles, see [reference]. Figure 7The sheet terminal 20G includes a vertically extending body portion 220, an upper elastic arm 221a extending upward from the body portion 220, and a lower elastic arm 226a extending downward from the body portion 220. The difference is that the upper elastic arm 221a only includes a transverse portion 223a and an upper abutting portion 224a, and correspondingly, the lower elastic arm 226a also only includes a transverse portion 223a and a lower abutting portion 229a. When the upper and lower elastic arms 221a and 226a are pressed, the upper abutting portion 224a abuts against the upper cut surface and side surface of the body portion 220, and the lower abutting portion 229a abuts against the lower cut surface and side surface of the body portion 220. It should be noted that the term "transverse portion" in this utility model does not mean that it extends only in the transverse direction. Rather, it mainly indicates that the length of the transverse portion changes in the transverse direction during its extension. Therefore, while extending in the transverse direction, it can also extend in other directions, such as the length of the vertical portion, which can also change. For example, the length of the transverse portion 223a changes both in the transverse and vertical directions. For the grounding terminals 20 in the same row, the grounding terminals 20G can also be connected together by a connecting strip (not shown in the figure) to form a whole grounding plate. That is, after the grounding terminals 20G are inserted into the insulator 10, the grounding terminals 20G are not disconnected and independently set. The left and right cut surfaces of two adjacent grounding terminals 20G are connected by a connecting strip to form a whole.

[0048] See Figure 8This is a grounding terminal 20G in another embodiment of the present invention. The grounding terminal includes an upper elastic arm 221b extending upward from the body portion 220 and a lower elastic arm 226b extending downward from the body portion 220. The upper elastic arm 221b sequentially includes an upper extension portion 222 extending vertically from the upper cut surface, a transverse portion 223b, and an upper abutment portion 224b. The lower elastic arm 226b sequentially includes a lower extension portion 227 extending vertically from the lower cut surface, a transverse portion 228b, and a lower abutment portion 229b. The transverse portion 223b and the upper abutment portion 224b form an upper contact portion at their intersection, and the transverse portion 228b and the lower abutment portion 229b form a lower contact portion at their intersection. When the terminal is pressed, the upper abutment portion 224b contacts the upper cut surface, and the lower abutment portion 229b contacts the lower cut surface. Preferably, to ensure better contact between the upper and lower abutment portions 224b and 229b with the upper and lower cut surfaces, and to minimize the overall space occupied by the grounding terminal 20G, the upper abutment portion 224b includes a first segment 2241b extending downward from the upper contact portion and away from the upper extension portion 222 in a first direction, and a second segment 2242b extending downward from the first segment 2241b and closer to the upper extension portion 222 in a first direction. Similarly, the lower abutment portion 229b includes a first segment 2291b extending upward from the lower contact portion and away from the lower extension portion 227 in a first direction, and a second segment 2292b extending upward from the first segment 2291b and closer to the lower extension portion 227 in a first direction. When the grounding terminal 20G is pressed, the second segment 2242b contacts the upper cut surface, the second segment 2292b contacts the lower cut surface, and the upper and lower cut surface portions that contact the second segments 2242b and 2292b extend horizontally. The grounding terminal 20G also includes a strip connection portion 270 extending upward from the upper cutting surface, wherein the strip connection portion 270 is located at the end of the upper cutting surface away from the upper edge portion 222.

[0049] See also Figures 1-3 The first functional area M1 includes at least two rows of functional terminals 20F, and two adjacent signal terminals 20S are separated by two spacer terminals 20J. Adjacent rows of functional terminals 20F within the same functional area are staggered along the first direction. This prevents adjacent rows of signal terminals 20S within the same functional area from aligning in a second direction (lateral direction) perpendicular to the first direction, thus reducing interference between signal terminals. Preferably, within the same functional area, the signal terminals 20S face the gap between the two spacer terminals 20J in the adjacent row in the second direction. Preferably, the two rows of functional terminals 20F adjacent to the grounding terminal 20G in the first functional area M1 and the second functional area M2 are also staggered along the first direction.

[0050] See Figures 4-5In this embodiment, the elastic arm 201 of the functional terminal 20 includes an upper elastic arm 240 extending upward from the retaining portion 200 and a lower elastic arm 250 extending downward from the retaining portion 200. The retaining part 200 extends vertically and is arranged parallel to the main body part 220. The upper elastic arm 240 includes an upper elastic part 241, an upper contact part 242, and an upper abutting part 243 in sequence. The upper elastic part 241 includes two upper support arms 2411 arranged at intervals, and the upper abutting part 243 includes two upper abutting arms 2431 arranged at intervals. The lower elastic arm 250 includes a lower elastic part 251, a lower contact part 252, and a lower abutting part 253 in sequence. The lower elastic part 251 includes two lower support arms 2511 arranged at intervals, and the lower abutting part 253 includes two lower abutting arms 2531 arranged at intervals. When the upper and lower elastic arms of the functional terminal are pressed, the upper and lower abutting arms 2431 and 2531 abut against each other in pairs.

[0051] It should be noted that this type of electrical connector 100 has a large number of terminals, possibly thousands. This utility model only schematically shows a portion of the terminals 20 and the terminal slots 13 that house these terminals. In actual products, the first functional area M1 has dozens or hundreds of rows of functional terminals 20F arranged along the first direction. Similarly, the second functional area M2 also has dozens or hundreds of rows of functional terminals 20F arranged along the first direction. Furthermore, it can be understood that in this embodiment, the elastic arms 201 of the functional terminals 20F in the first functional area M1 and the second functional area M2 extend from the corresponding holding portion 200 toward the direction closer to the ground terminal 20G. Of course, in other embodiments, the functional terminals 20F in the first functional area M1 and the second functional area M2 can also be configured such that the elastic arms 201 extend from the corresponding holding portion 200 toward the direction away from the ground terminal 20G. Understandably, in other embodiments, one of the first and second functional areas M1 and M2 may be configured as the elastic arm of the functional terminal 20F extending toward the ground terminal 20G, and the other is configured as the elastic arm of the functional terminal 20F extending away from the ground terminal 20G.

[0052] The above embodiments are preferred embodiments of this utility model, but not all embodiments. Any equivalent changes to the technical solutions of this utility model made by those skilled in the art after reading this utility model specification are covered by the claims of this utility model.

Claims

1. An electrical connector comprising an insulator and a plurality of terminals, the insulator comprising an upper surface, a lower surface, and a terminal slot extending through the upper and lower surfaces, the terminals being disposed one-to-one within corresponding terminal slots; characterized by: The terminals include a row of ground terminals and a plurality of function terminals arranged along a first direction, each of the function terminals includes a holding portion and a resilient arm extending from the holding portion, the function terminals on one side of the row of ground terminals form a first function area, and the function terminals on the other side of the row of ground terminals form a second function area, the resilient arms of the function terminals in the first function area and the second function area extend from the corresponding holding portions towards the ground terminals or away from the ground terminals.

2. The electrical connector of claim 1, wherein: The first and second function areas each include a plurality of signal terminals arranged at intervals, and the signal terminals are arranged opposite the corresponding ground terminals.

3. The electrical connector of claim 1 or 2, wherein: The first function area includes at least two rows of function terminals, and the two adjacent rows of function terminals are arranged in a staggered manner along the first direction.

4. The electrical connector of claims 1 or 2, wherein: The two rows of function terminals closest to the ground terminals in the first and second function areas are arranged in a staggered manner along the first direction.

5. The electrical connector of claim 1, wherein: The center line of the function terminal is perpendicular to the plane in which the ground terminal is located.

6. The electrical connector of claim 1, wherein: The ground terminal is in a sheet shape and includes a body portion extending vertically and an upper resilient arm, the body portion has an upper cutting surface and a lower cutting surface formed along the thickness direction of the ground terminal, the upper resilient arm extends upwards from the upper cutting surface and sequentially includes an upper extension portion, a transverse portion extending leftwards from the upper extension portion, and an upper abutting portion extending downwards from the transverse portion, and when the upper resilient arm is pressed, the upper abutting portion is in abutting contact with the upper cutting surface.

7. The electrical connector of claim 1, wherein: The resilient arm includes an upper resilient arm extending upwards from the holding portion and a lower resilient arm extending downwards from the holding portion, the upper resilient arm includes an upper resilient portion, an upper contact portion, and an upper abutting portion, the upper resilient portion includes two upper branch arms arranged at intervals, and the upper abutting portion includes two upper abutting arms arranged at intervals; the lower resilient arm sequentially includes a lower resilient portion, a lower contact portion, and a lower abutting portion, the lower resilient portion includes two lower branch arms arranged at intervals, and the lower abutting portion includes two lower abutting arms arranged at intervals, and when the upper and lower resilient arms of the function terminal are pressed, the upper and lower abutting arms are in abutting contact in pairs.

8. The electrical connector of claim 1, wherein: The ground terminal is in a sheet shape and includes a body portion extending vertically and an upper resilient arm, the body portion has an upper cutting surface and a lower cutting surface formed along the thickness direction of the ground terminal, the upper resilient arm extends from the upper cutting surface and is located above the body portion, and the upper resilient arm can be in abutting contact with the body portion when pressed; each of the function terminals includes a holding portion extending vertically, an upper resilient arm extending upwards from the holding portion, and a lower resilient arm extending downwards from the holding portion, and the holding portion is arranged in parallel with the body portion.

9. An electrical connector comprising an insulator and a plurality of terminals, the insulator being provided with an upper surface, a lower surface and a terminal slot extending through the upper and lower surfaces, the terminals being disposed one by one in the corresponding terminal slots, characterized in that: The terminals include a row of ground terminals arranged along a first direction and function terminals respectively located on both sides of the row of ground terminals, each ground terminal includes a vertically extending body portion having an upper cutting surface and a lower cutting surface formed along a thickness direction thereof, and an upper elastic arm extending upwardly and leftwardly from the upper cutting surface, and the upper elastic arm is capable of abutting contact with the body portion when pressed; each function terminal includes a holding portion, an upper elastic arm extending upwardly from the holding portion, and a lower elastic arm extending downwardly from the holding portion, and a center line of the function terminal is perpendicular to a plane in which the body portion is located.

10. The electrical connector of claim 9, wherein: The upper and lower elastic arms of the function terminals located on both sides of the ground terminals each extend from the corresponding holding portion toward a side close to the ground terminal.

11. The electrical connector of claim 9, wherein: One side of the ground terminal is provided with at least two rows of function terminals, and two adjacent rows of function terminals are arranged in a staggered manner along the first direction; each row of function terminals includes signal terminals arranged at intervals, and the signal terminals are arranged in one-to-one correspondence with the ground terminals.

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