Electrical connector
By adopting an electrical connector design consisting of two independent terminal pieces, the problems of insufficient mechanical and high-frequency performance of electrical connectors when connecting the central processing unit and the motherboard are solved, and more efficient signal transmission is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FOXCONN (KUNSHAN) COMPUTER CONNECTOR CO LTD
- Filing Date
- 2020-09-15
- Publication Date
- 2026-05-26
AI Technical Summary
Existing electrical connectors are insufficient in mechanical performance and high-frequency signal transmission performance when connecting the central processing unit and the motherboard, becoming a bottleneck for signal transmission.
The electrical connector design consists of two independent terminal pieces, including first and second terminal pieces. Each terminal piece has a flexible arm and an overlap portion. The movement of the flexible arm forms a conductive path, which enhances mechanical properties and improves high-frequency performance.
It improves the mechanical and high-frequency performance of electrical connectors, reduces crosstalk noise, and enhances signal transmission efficiency.
Smart Images
Figure CN114188746B_ABST
Abstract
Description
[Technical Field]
[0001] This invention relates to an electrical connector for mounting chips such as central processing units (CPUs). [Background Technology]
[0002] With the booming development of concepts such as big data, cloud computing, and the Internet of Things, almost every new product talks about high-speed transmission applications. Each application module is developing towards high speed to achieve the aforementioned high-speed transmission applications. The input / output interfaces connecting these modules naturally also need high-speed transmission; for example, the existing USB Type-C interface has reached 20Gbps, and the Thunderbolt interface reaches as high as 40Gbps. Meanwhile, the central processing unit (CPU), a core component of computers and servers, is developing towards even higher speeds and more soldered pins. The electrical connectors connecting the CPU and the motherboard cannot become bottlenecks for signal transmission. In actual high-frequency testing, the upper end of the electrical connector's soldered pins elastically abuts against the conductive pad of the CPU, while the lower end is soldered to the circuit board. The upper end is generally a tilted, elastic cantilever beam to provide flexible mechanical characteristics and ensure contact with the CPU. Due to the large number of terminals, high mechanical performance is required, while simultaneously reducing the adverse effects of resonance on high-frequency signals.
[0003] Therefore, it is indeed necessary to provide a new electrical connector to overcome the above-mentioned defects. [Summary of the Invention]
[0004] The purpose of this invention is to provide an electrical connector that improves mechanical and high-frequency performance.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an electrical connector, comprising a body having a plurality of terminal holes and a plurality of terminals housed within the corresponding terminal holes; the body having an upper surface and a lower surface, the terminal holes penetrating the upper and lower surfaces; each terminal comprising a first terminal piece and a second terminal piece independent of each other, the first terminal piece comprising a first fixing portion fixed to the body and a first elastic arm extending upward from the upper surface of the body, the first elastic arm having a chip contact portion and a first overlapping portion extending downward; the second terminal piece comprising a second fixing portion fixed to the body and a second overlapping portion extending upward; when the first elastic arm is forced to move downward, it causes the first overlapping portion to move until the first overlapping portion contacts the second overlapping portion, forming a conductive path.
[0006] The terminal of this invention consists of two independent terminal pieces, which can form two conductive paths, thereby improving high-frequency performance while ensuring mechanical properties. [Attached Image Description]
[0007] Figure 1This is a perspective view of the electrical connector of the present invention, wherein two terminals and solder balls have been removed.
[0008] Figure 2 yes Figure 1 A 3D view of the two removed terminals and solder balls.
[0009] Figure 3 yes Figure 1 A three-dimensional view from another angle.
[0010] Figure 4 yes Figure 2 A three-dimensional view from another angle.
[0011] Figure 5 This is a partial top view of the electrical connector.
[0012] Figure 6 This is a top view of an electrical connector.
[0013] Figure 7 yes Figure 5 A cross-sectional view along the dashed line AA.
[0014] Figure 8 It is similar to Figure 7 The first terminal piece is pressed down to contact the second terminal piece.
[0015] [Component Symbol Explanation]
[0016] Electrical connector 100 First terminal piece 30 Second terminal piece 40 Body 10 First elastic arm 31 Second elastic arm 41 upper surface 101 Chip contact 311 Connecting part 411 lower surface 102 First joint 312 Second joint 412 Terminal hole 11 Arc-shaped guide section 3121 Inclined surface 4121 Inner wall surface 112 First fixing part 32 Arc-shaped part 4122 Bump 12 First vertical plate 321 Second fixing part 42 Terminal 20 Second vertical plate 322 Third vertical board 421 50 solder balls First welding section 33 Fourth vertical board 422 Virtual quadrilateral structure C Second welding section 43 Extension lines D, E
[0017] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention.
Detailed Implementation Methods
[0018] The following will describe specific embodiments of the electrical connector of the present invention with reference to the figures.
[0019] Please refer to Figures 1 to 8 As shown, the electrical connector 100 of this invention is used to connect a chip (not shown) such as a central processing unit (CPU) to a circuit board (not shown). Please refer to... Figures 1 to 4 As shown, the electrical connector 100 includes a body 10 having a plurality of terminal holes 11 and a plurality of terminals 20 housed within the terminal holes 11. The body is formed by injection molding of insulating material, and the terminals 20 are formed by stamping of metal material. The body 10 has an upper surface 101 and a lower surface 102, and the terminal holes 11 penetrate the upper and lower surfaces 101 and 102. The terminal holes 11 are provided with protrusions 12 at their diagonal points.
[0020] Each of the terminals 20 includes a first terminal piece 30 and a second terminal piece 40 that are independent of each other. The first terminal piece 30 includes a first fixing portion 32 fixed to the body 10, a first elastic arm 31 extending upward from the upper surface 101 of the body. The first elastic arm 31 has a chip contact portion 311 for contacting a chip and a first overlapping portion 312 extending downward. A first welding portion 33 extends downward from the first fixing portion 32. The second terminal piece 40 includes a second fixing portion 42 fixed to the body 10 and a second elastic arm 41 extending upward. The second elastic arm 41 has a second overlapping portion 412. A second welding portion 43 extends downward from the second fixing portion 42. The first and second welding portions 33 and 43 extend toward each other in adjacent directions and are welded to the same solder ball 50. When the chip is installed in the electrical connector 100 and the first elastic arm 31 is forced to move downward, the first overlapping portion 312 is带动移动 until the first overlapping portion 312 contacts the second overlapping portion 412 to form a conductive path. Refer Figure 8 As shown, the terminal 20 generates two conductive paths, as indicated by the arrows, forming a parallel circuit and being welded through the solder ball 50, effectively improving the high-frequency performance.
[0021] The first elastic arm 31 extends obliquely upward from the first fixing portion 32. The chip contact portion 311 is located at the highest position of the first elastic arm 31. The first overlapping portion 312 is bent downward in the opposite direction from the chip contact portion 311 and has an arc-shaped guiding portion 3121 at its end. The second overlapping portion 422 has an inclined surface 4121 facing outward. The arc-shaped guiding portion 3121 can slide along the inclined surface 4121. Refer Figure 7-8 As shown, after the first elastic arm 31 is pressed downward, the arc-shaped guiding portion 3121 substantially descends to the lowest position of the inclined surface 4121. Thus, the conductive path can be shortened and the high-frequency performance can be improved. The end of the second overlapping portion 412 has an arc-shaped portion 4122 bent downward in the opposite direction. Under extreme conditions, when the first elastic arm 31 moves downward to the second overlapping portion 412, the arc-shaped portion 4122 prevents scratching of the first elastic arm 31.
[0022] Refer Figure 5 、 6 As shown, the first and second fixing portions 32 and 42 are fixed along the inner wall surface 112 of the terminal hole 11. When looking from the upper surface downward ( Figure 5 shown), or when looking from the lower surface upward (refer Figure 6 shown), the first and second fixing portions 32 and 42 are arranged diagonally and enclose a virtual quadrilateral structure C, as shown by the dotted line in Figure 5 . The first and second fixing portions 32 and 42 surround the periphery inside the body 10, which can improve the shielding effect of the grounding terminal in the terminal 20 and reduce the crosstalk noise.
[0023] More specifically, the first fixing part 32 includes a first vertical plate 321 and a second vertical plate 322 that is vertically bent from the side of the first vertical plate 321. A first elastic arm 31 extends from the first vertical plate 321, and a first welding part 33 extends vertically downward from the first vertical plate 321. The second fixing part 42 includes a third vertical plate 421 and a fourth vertical plate 422 that is vertically bent from the side of the third vertical plate 421. A second elastic arm 41 extends from the third vertical plate 421, and a second welding part 43 extends vertically downward from the third vertical plate 421. The first and third vertical plates 321 and 421 are arranged facing each other, and the second and fourth vertical plates 322 and 422 are also arranged facing each other. The first and second welding parts 33 and 43 extend towards each other and are in the same plane.
[0024] In the preferred embodiment, viewed from the top surface downwards ( Figure 5 As shown), or viewed from the bottom surface upwards (see figure). Figure 6 As shown, the extension line A of the inner surface 4211 of the third vertical plate 421 is orthogonal to the second vertical plate 322, and the extension line of the inner surface 4221 of the fourth vertical plate 422 is orthogonal to the first vertical plate 321. This makes the first and second fixing parts form a complete four-sided shielding effect inside the body 10, which can improve the shielding effect of the grounding terminal in the terminal 20 and reduce crosstalk noise. The first to fourth vertical plates are along the inner wall surface 112 of the terminal hole 11, and the side edges of the four vertical plates interfere with the inner wall surface 112 of the terminal hole 11. Due to the setting of the protrusion 12, the side edges of the outer surfaces of the first and second vertical plates are restricted by the protrusion 12 to further fix the fixing part of the terminal piece. In the preferred embodiment, the side edges of the outer surfaces of the third and fourth vertical parts are also restricted by the protrusion. Figure 6 Only the third vertical section is shown as being restricted by the protrusion 12. In practice, the fourth vertical section can also be restricted by the protrusion 12. The second vertical plate 322 is flush with the upper surface 101 of the body, and the fourth vertical plate is slightly lower than the upper surface of the body.
[0025] The above description is only a partial embodiment of the present invention, not all embodiments. Any equivalent changes to the technical solutions of the present invention made by those skilled in the art through reading the present invention specification are covered by the claims of the present invention.
Claims
1. An electrical connector comprising a body having a plurality of terminal holes and a plurality of terminals received within corresponding terminal holes; the body having an upper surface and a lower surface, the terminal holes penetrating the upper and lower surfaces; characterized in that: Each terminal includes a first terminal piece and a second terminal piece that are independent of each other. The first terminal piece includes a first fixing part fixed to the body and a first elastic arm extending upward from the upper surface of the body. The first elastic arm has a chip contact part and a first overlapping part extending downward. The second terminal piece includes a second fixing part fixed to the body and a second overlapping part extending upward. When the first elastic arm is forced to move downward, it causes the first overlapping part to move until the first overlapping part contacts the second overlapping part, forming a conductive path. The first fixing part includes a first vertical plate and a second vertical plate that is bent vertically from the side of the first vertical plate. The second fixing part includes a third vertical plate and a fourth vertical plate that is bent vertically from the side of the third vertical plate. The first and third vertical plates are arranged facing each other, and the second and fourth vertical plates are arranged facing each other. Viewed downward from the upper surface, the first and second fixing parts are arranged diagonally and form a virtual quadrilateral structure.
2. The electrical connector as described in claim 1, characterized in that: The first elastic arm extends upward at an angle from the first fixed part, the chip contact part is located at the highest point of the first elastic arm, the first overlapping part bends downward in the opposite direction from the chip contact part and has an arc-shaped guide part at its end, the second overlapping part has an outward inclined surface, and the arc-shaped guide part can slide along the inclined surface.
3. The electrical connector as described in claim 1, characterized in that: A first welding portion extends below the first fixing portion, and a second welding portion extends below the second fixing portion, with the first and second welding portions extending toward each other in a direction that is close to each other.
4. The electrical connector as described in claim 1, characterized in that: The first and second fixing parts are fixed along the inner wall surface of the terminal hole.
5. The electrical connector as described in claim 1, characterized in that: The first elastic arm extends from the first vertical plate; the upper end of the third vertical plate extends into the second elastic arm, and the second overlapping portion is located on the second elastic arm.
6. The electrical connector as described in claim 5, characterized in that: The extension line of the inner surface of the third vertical plate is orthogonal to the second vertical plate, and the extension line of the inner surface of the fourth vertical plate is orthogonal to the first vertical plate.
7. The electrical connector as claimed in claim 5, characterized in that: The terminal hole is provided with a protrusion at its diagonal, and the side edges of the outer surfaces of the first, second, and third vertical plates are restricted by the protrusion.
8. The electrical connector as described in claim 5, characterized in that: The second elastic arm includes an extension that extends horizontally from the third vertical plate. The extension can abut against the upper surface of the body. The second overlapping portion is formed by bending upwards in the opposite direction from the end of the extension.
9. The electrical connector as claimed in claim 2, characterized in that: The second overlapping part bends downwards in the opposite direction at its free end to form an arc shape.
10. The electrical connector as claimed in claim 1, characterized in that: The second vertical plate is flush with the upper surface of the body, and the fourth vertical plate is lower than the upper surface of the body.