Electric connector
By designing the signal terminal and conductive sheet to overlap in projection in the electrical connector, the problem of incomplete signal transmission caused by residual stake effect in the prior art is solved, and the stability of signal transmission and impedance matching are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LOTES ZHONGSHAN CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-05-19
AI Technical Summary
In existing electrical connectors, the contact portion and the conductive sheet make point contact, resulting in a long downward extension of the conductive sheet from the contact position, which produces a residual stake effect, affecting signal transmission integrity and high-frequency performance.
The design of the signal terminal's elastic arm forms a surface contact with the conductive sheet. By setting the abutment portion to overlap with the projected portion of the conductive sheet and to be close to the lower edge of the conductive sheet in the lateral direction, the residual stake effect is reduced.
It improves the integrity and stability of signal transmission, reduces the interference of residual stake effect on signal transmission, and optimizes the impedance matching and insertion loss of signal terminals.
Smart Images
Figure CN224264298U_ABST
Abstract
Description
[Technical Field]
[0001] This utility model relates to an electrical connector, and more particularly to an electrical connector that can improve the integrity of signal transmission. [Background Technology]
[0002] In the prior art, connectors for inserting electronic cards include an insulating body and a signal terminal fixed within the insulating body. The insulating body has an insertion cavity for inserting the electronic card. The signal terminal has a flexible arm and a main body. The two ends of the flexible arm are connected to the main body, and the flexible arm has an arc-shaped contact portion exposed in the insertion cavity. When the electronic card is inserted into the insertion cavity, the contact portion makes point contact with the conductive sheet on the electronic card.
[0003] However, in the existing technology, the contact part and the conductive sheet are in point contact. In order to ensure a stable electrical connection between the contact part and the conductive sheet, the contact part needs to be positioned in the middle of the vertical direction, which can easily lead to a long length of the conductive sheet extending downward from the contact point to the lower edge of the conductive sheet. This can cause a severe residual stake effect, which can interfere with the signal transmission of the signal terminal, impair the integrity of the signal transmission, and result in poor high-frequency performance of the electrical connector.
[0004] Therefore, it is necessary to design an electrical connector that can improve signal transmission integrity in order to solve the above-mentioned technical problems. [Utility Model Content]
[0005] The purpose of this invention is to improve the integrity of signal transmission by having the contact portion of the signal terminal at least partially overlap with the projection of the corresponding conductive sheet in the lateral direction, so that the contact plane forms a surface contact with the conductive sheet, and by setting the contact plane to be closer to the lower edge of the conductive sheet in the vertical direction, thereby reducing the residual stake effect.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An electrical connector for inserting into a mating member, the mating member having a mating portion with a conductive plate, comprising: a base including a slot and at least one terminal slot, the slot for inserting into the mating portion, the terminal slot being located on one side of the slot in the lateral direction and communicating with the slot in the lateral direction; at least one signal terminal fixed to the base, the signal terminal including a main body and a resilient arm, the resilient arm being a continuous structure with its two ends connected to the main body, the resilient arm including a first spring arm and a second spring arm, the first spring arm including a contact surface exposed in the slot for contacting the conductive plate. The second spring arm includes an abutment portion received within the terminal slot; when the abutment portion is inserted into the slot, in the lateral direction, the projection of the abutment portion at least partially overlaps with the projection of the corresponding conductive sheet, and the abutment portion abuts against the slot wall on the side of the terminal slot away from the slot in the lateral direction, so that the contact plane forms a surface contact with the conductive sheet, and in the vertical direction perpendicular to the lateral direction, the contact plane is generally closer to the lower edge of the conductive sheet than the upper edge of the conductive sheet, so as to reduce the residual pile effect generated by the conductive sheet extending downward from the contact position with the contact plane to the lower edge of the conductive sheet.
[0008] Furthermore, when the mating part is inserted into the slot, in the lateral direction, the projection of the abutting part is located within the projection of the corresponding conductive sheet.
[0009] Furthermore, when the mating part is inserted into the slot, the lower edge of the contact plane is not higher than the lower edge of the conductive sheet in the vertical direction.
[0010] Furthermore, when the mating part is inserted into the slot, the lower edge of the contact plane is lower than the lower edge of the conductive sheet in the vertical direction.
[0011] Furthermore, in the lateral direction, the projection of the abutment portion at least partially overlaps with the projection of the contact plane.
[0012] Furthermore, in the lateral direction, the abutting portion is positioned directly opposite the middle portion of the contact plane in the vertical direction.
[0013] Furthermore, the first elastic arm also includes a first extension connected between the main body and the lower end of the contact plane, and a second extension extending upward from the upper end of the contact plane. The first extension is inclined towards the second elastic arm from the lower end of the contact plane, and the second extension is inclined towards the second elastic arm from the upper end of the contact plane. The second elastic arm also includes a third extension connected between the main body and the lower end of the abutment portion, and a fourth extension extending upward from the upper end of the abutment portion. The third extension is inclined towards the first elastic arm from the lower end of the abutment portion, and the fourth extension is inclined towards the first elastic arm from the upper end of the abutment portion. The elastic arm also includes a bent portion connected between the second extension and the fourth extension.
[0014] Furthermore, the elastic arm and the main body together form a closed groove. The elastic arm has an inner edge facing the closed groove and an outer edge away from the closed groove. The elastic arm has the same width defined between its inner edge and its outer edge.
[0015] Furthermore, the signal terminal is integrally formed from a metal plate through a blanking process.
[0016] Furthermore, the main body includes a first connecting segment connected to the first spring arm, a second connecting segment connected to the second spring arm, and a gradient segment. The first connecting segment and the second connecting segment are spaced apart in the lateral direction. When viewed in the longitudinal direction perpendicular to the lateral and vertical directions, the first connecting segment gradually widens from its connection with the first spring arm toward the direction away from the first spring arm, and the second connecting segment gradually widens from its connection with the second spring arm toward the direction away from the second spring arm. The upper end of the gradient segment is connected to both the first connecting segment and the second connecting segment, and the width of the gradient segment in the lateral direction gradually widens from top to bottom.
[0017] Compared with the prior art, the electrical connector designed in this utility model has the following advantages:
[0018] The signal terminal of the electrical connector in this utility model includes an elastic arm and a main body. The elastic arm, which is connected to the main body at both ends, includes a first elastic arm and a second elastic arm. The first elastic arm has a contact plane for contacting the conductive sheet to achieve surface contact. The second elastic arm has an abutment portion that is received in the terminal slot. When the mating part is inserted into the slot, in the lateral direction, the projection of the abutment portion at least partially overlaps with the projection of the corresponding conductive sheet. The abutment portion abuts against the slot wall of the terminal slot on the side away from the slot in the lateral direction, so that the reaction force generated when the abutment portion abuts against the slot wall of the terminal slot acts on the contact plane, thereby causing the elastic arm of the signal terminal to undergo elastic deformation, preventing the elastic arm of the signal terminal from shifting away from the mating part as a whole, and ensuring that the contact plane and the conductive sheet of the mating part achieve planar contact. In the vertical direction perpendicular to the lateral direction, the contact plane is closer to the lower edge of the conductive sheet than the upper edge of the conductive sheet, so as to reduce the residual length generated by the conductive sheet extending downward from the contact position with the contact plane to the lower edge of the conductive sheet, reduce the interference of the residual effect on signal transmission, and improve the signal transmission integrity. [Attached Image Description]
[0019] Figure 1 This is a partial exploded perspective view of an electrical connector, mating parts, and circuit board according to the present invention.
[0020] Figure 2 for Figure 1 A three-dimensional assembly diagram of the electrical connector of this utility model mounted on a circuit board, with the mating parts not inserted into the electrical connector;
[0021] Figure 3 for Figure 2 Sectional view at point AA along the middle;
[0022] Figure 4 for Figure 3 A schematic diagram of the electrical connector of this utility model after it has been inserted into the mating part;
[0023] Figure 5 for Figure 4 A magnified view of a section at point C;
[0024] Figure 6 for Figure 2 A cross-sectional view of the electrical connector of this utility model after it is inserted into the mating part along the BB section;
[0025] Figure 7 for Figure 1 A three-dimensional structural diagram showing the contact between one of the signal terminals and the corresponding conductive sheet of the mating component;
[0026] Figure 8 for Figure 7 A schematic diagram showing the signal terminal in contact with the conductive plate of the mating component, viewed from the lateral direction.
[0027] Explanation of reference numerals in the accompanying drawings for the specific implementation methods:
[0028] Electrical connector 1000 Base 1 Top surface 11 Bottom 12 Slot 13 Terminal slot 14 Signal terminal 2 Main body 21 First connecting segment 211 Second connecting section 212 Gradual transition section 213 Flat section 214 Flexible arm 22 First spring arm 221 First extension 2211 Contact plane 2212 Top edge 22121 Bottom edge 22122 Second extension 2213 Second boom arm 222 Third Extension 2221 Contact part 2222 Fourth Extension 2223 Bending part 223 Inner edge 224 225 outer edge Closed slot 23 Installation Department 24 Grounding terminal 3 2000 docking parts docking section 4 Conductive sheet 41 Upper edge 411 Lower edge 412 Side edge 413 Circuit Board 3000
Detailed Implementation Methods
[0029] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0030] In the description of this utility model, it should be noted that the terms "upper", "lower", "horizontal", "width", "top", "bottom", "vertical", "inner", "outer", "middle", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the position or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element present.
[0032] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0033] like Figures 1 to 7The diagram shows the electrical connector 1000 of this utility model. The vertical direction of the electrical connector 1000 is defined as the Z-axis, the upward direction as the positive Z-axis, the horizontal direction as the X-axis, the rightward direction as the positive X-axis, the longitudinal direction as the Y-axis, and the backward direction as the positive Y-axis. For ease of description, the vertical, horizontal, and longitudinal directions in this utility model are relative positions and do not constitute a limitation on implementation. Further explanation: the term "parallel" in this application includes not only absolute parallelism but also generally understood parallelism in engineering, such as "parallel" referring to an angle of -1° to 1° between lines, lines and surfaces, or surfaces. Similarly, "perpendicular" also includes not only absolute perpendicularity but also generally understood perpendicularity in engineering, such as "perpendicular" referring to an angle of 89° to 91° between lines, lines and surfaces, or surfaces. Equal distances or equal angles include not only absolute equality, but also approximate equality as commonly understood in engineering, which means there can be a certain degree of error, such as a tolerance range of -1% to 1%.
[0034] like Figure 1 and Figure 4 As shown, an electrical connector 1000 is used to insert a mating member 2000. The mating member 2000 has a mating portion 4 with a plurality of conductive plates 41 distributed on opposite sides of the mating portion 4. Each conductive plate 41 has an upper edge 411 and a lower edge 412 arranged opposite each other in the vertical direction, and two side edges 413 arranged opposite each other in the longitudinal direction. Each side edge 413 connects the upper edge 411 and the lower edge 412. The electrical connector 1000 includes: a base 1, a plurality of signal terminals 2, and a plurality of ground terminals 3. The base 1 is used to fix the plurality of signal terminals 2 and the plurality of ground terminals 3. The signal terminals 2 and the ground terminals 3 are both used to electrically connect with the mating member 2000. The mating member 2000 can be an electronic card or a mating connector. In this embodiment, the electrical connector 1000 is a card edge connector, and the mating member 2000 is an electronic card.
[0035] like Figure 1 , Figure 2 and Figure 3 As shown, a base 1 has a top surface 11 and a bottom surface 12 arranged opposite each other in the vertical direction. The base 1 includes a slot 13 and a plurality of terminal slots 14. The slot 13 is recessed downward from the top surface 11 of the base 1 and extends along the longitudinal direction for inserting into the mating part 4. The plurality of terminal slots 14 are symmetrically arranged on opposite sides of the slot 13 in the lateral direction for correspondingly accommodating a plurality of signal terminals 2 and a plurality of ground terminals 3. The plurality of terminal slots 14 located on the same side of the slot 13 in the lateral direction are aligned in the longitudinal direction. Each terminal slot 14 is connected to the slot 13 in the lateral direction, and each terminal slot 14 penetrates downward through the bottom surface 12 of the base 1.
[0036] like Figure 1 , Figure 2 and Figure 3 As shown, multiple signal terminals 2 and multiple ground terminals 3 are fixed in the base 1 on opposite sides of the slot 13 in the lateral direction. The signal terminals 2 and multiple ground terminals 3 are correspondingly fixed in multiple terminal slots 14. The signal terminals 2 and multiple ground terminals 3 located on the same side of the slot 13 in the lateral direction are aligned in the longitudinal direction. Both the signal terminals 2 and the ground terminals 3 are integrally formed from a single metal plate through a blanking process, facilitating manufacturing and increasing the production capacity of the signal terminals 2 and ground terminals 3. In this embodiment, both the signal terminals 2 and the ground terminals 3 are inserted upwards from the bottom surface 12 of the base 1 into the corresponding terminal slots 14. In other embodiments, the signal terminals 2 and the ground terminals 3 can be integrally injection molded with the base 1, thereby fixing the signal terminals 2 and the ground terminals 3 in the base 1.
[0037] like Figure 3 , Figure 5 and Figure 7 As shown, each signal terminal 2 includes a main body 21, an elastic arm 22, and a mounting part 24. The elastic arm 22 is a continuous structure, and its two ends are connected to the main body 21, so that the upper section of the signal terminal 2 is enclosed by the elastic arm 22 and the main body 21 to form a closed groove 23. The maximum width of the closed groove 23 in the horizontal direction is less than the maximum height of the closed groove 23 in the vertical direction.
[0038] like Figure 4 and Figure 5As shown, the main body 21 is located below the elastic arm 22 and is fixed in the corresponding terminal slot 14. In the lateral direction, the maximum width of the main body 21 is greater than the maximum width of the elastic arm 22. When assembling the signal terminal 2, the maximum width of the main body 21 is greater than the maximum width of the elastic arm 22, which facilitates the insertion of the signal terminal 2 from the bottom surface 12 of the base 1 upwards. The main body 21 includes a first connecting section 211, a second connecting section 212, a tapered section 213 connected to the first connecting section 211 and the second connecting section 212 respectively, and a flat section 214. The upper end of the first connecting section 211 is connected to the lower end of one end of the elastic arm 22. The width of the first connecting section 211 in the lateral direction gradually widens from the connection point with the elastic arm 22 toward the direction away from the elastic arm 22, so that the impedance of the signal terminal 2 from the elastic arm 22 to the first connecting section 211 gradually changes. The second connecting segment 212 and the first connecting segment 211 are spaced apart in the lateral direction. The upper end of the second connecting segment 212 is connected to the lower end of the other end of the elastic arm 22. The width of the second connecting segment 212 in the lateral direction gradually increases from the connection point with the elastic arm 22 toward the direction away from the elastic arm 22, so that the impedance of the signal terminal 2 from the elastic arm 22 to the second connecting segment 212 gradually changes, avoiding a sudden change in impedance of the signal terminal 2 from the elastic arm 22 to the main body 21. The upper end of the transition segment 213 is connected to the first connecting segment 211 and the second connecting segment 212 respectively. The width of the transition segment 213 in the lateral direction gradually increases from top to bottom, so that the impedance of the signal terminal 2 from the first connecting segment 211, the second connecting segment 212 to the transition segment 213 gradually changes, thereby making the impedance of the signal terminal 2 from the entire elastic arm 22 to the main body 21 gradually change, avoiding a sudden change in impedance of the signal terminal 2 from the elastic arm 22 to the main body 21, which would affect signal transmission. The lower end of the gradient section 213 is provided with a barb (unlabeled) for interference engagement with the groove wall of the terminal slot 14 to fix the signal terminal 2. The flat section 214 is connected to the lower end of the gradient section 213, and the width of the flat section 214 in the lateral direction remains constant.
[0039] like Figures 3 to 5As shown, the elastic arm 22 has an inner edge 224 facing the closed groove 23 and an outer edge 225 away from the closed groove 23. The elastic arm 22 has the same width defined between its inner edge 224 and outer edge 225, which makes the terminal shape more regular, thereby making the impedance of the entire elastic arm 22 more matched and optimizing the SI performance of the signal terminal 2. The width of the elastic arm 22 between the inner edge 224 and the outer edge 225 of the closed groove 23 is smaller than the width of the main body 21 in the lateral direction. When the mating member 2000 is inserted into the slot 13, the conductive sheet 41 on the mating member 2000 forms a plate capacitor on the elastic arm 22, which increases the capacitance of the elastic arm 22. Since impedance is inversely proportional to capacitance, when the width of the elastic arm 22 is the same as that of the main body 21, the impedance of the elastic arm 22 is smaller than that of the main body 21, which is not conducive to impedance matching of the signal terminal 2. Inductance is inversely proportional to the width of the signal terminal 2, and impedance is directly proportional to inductance. Therefore, the width of the elastic arm 22 is set to be smaller than the width of the main body 21, which reduces the inductance of the main body 21, thereby reducing the impedance of the main body 21. This reduces the impedance difference between the elastic arm 22 and the main body 21, thereby making the impedance of the signal terminal 2 more matched, optimizing insertion loss, and improving the SI of the electrical connector 1000.
[0040] like Figure 3 and Figure 7 As shown, the elastic arm 22 includes a first elastic arm 221, a second elastic arm 222, and a bending portion 223. In the transverse direction, the first elastic arm 221 is positioned closer to the slot 13 than the second elastic arm 222. The lower ends of the first elastic arm 221 and the second elastic arm 222 are respectively connected to the first connecting section 211 and the second connecting section 212 of the main body 21. The upper ends of the first elastic arm 221 and the second elastic arm 222 are integrally connected through the bending portion 223, which avoids electrical breakage between the first elastic arm 221 and the second elastic arm 222, reduces the length of the residual stake on the signal terminal 2, reduces the interference of the residual stake effect on signal transmission, and improves the integrity of signal transmission.
[0041] like Figure 3 , Figure 5 and Figure 8As shown, the first spring arm 221 includes a first extension 2211, a contact plane 2212, and a second extension 2213. The upper section of the first extension 2211 is located within the slot 13 and connected to the lower end of the contact plane 2212. The lower section of the first extension 2211 is located within the corresponding terminal slot 14 and connected to the first connecting section 211 of the main body 21. The first extension 2211 is inclined from the lower end of the contact plane 2212 toward the second spring arm 222 to prevent the contact plane 2212 from being too long in contact with the mating member 2000, thus reducing the insertion and removal force of the mating member 2000 into the slot 13. The contact plane 2212 is exposed in the slot 13 to contact the corresponding conductive sheet 41, and the contact plane 2212 extends vertically in a longitudinal shape. When the mating part 4 of the mating part 2000 is inserted into the slot 13, in the vertical direction perpendicular to the horizontal direction, the contact plane 2212 is closer to the lower edge 412 of the conductive sheet 41 than the upper edge 411 of the conductive sheet 41, so as to reduce the residual length of the conductive sheet 41 extending downward from the contact position with the contact plane 2212 to the lower edge 412 of the conductive sheet 41.
[0042] like Figure 3 , Figure 5 and Figure 7As shown, in the vertical direction, the contact plane 2212 also has an upper edge 22121 and a lower edge 22122 that are opposite to each other in the vertical direction. In this embodiment, when the mating part 4 is inserted into the slot 13, in the vertical direction, the lower edge 22122 of the contact plane 2212 is lower than the lower edge 412 of the corresponding conductive sheet 41. This avoids manufacturing errors and ensures that the portion of the conductive sheet 41 extending downward from the contact position with the contact plane 2212 is in contact with the contact plane 2212, thus avoiding the residual stub effect of the conductive sheet 41. In another embodiment, when the mating part 4 is inserted into the slot 13, in the vertical direction, the lower edge 22122 of the contact plane 2212 is flush with the lower edge 412 of the corresponding conductive sheet 41, thereby ensuring that the portion of the conductive sheet 41 extending downward from the contact position with the contact plane 2212 is in contact with the contact plane 2212, avoiding the residual stub effect of the conductive sheet 41, reducing the interference of the residual stub effect on signal transmission, and improving signal transmission integrity. In another embodiment, when the mating part 4 is inserted into the slot 13, in the vertical direction, the lower edge 22122 of the contact plane 2212 is slightly higher than the lower edge 412 of the corresponding conductive sheet 41. Although the lower edge 22122 of the contact plane 2212 being slightly higher than the lower edge 412 of the conductive sheet 41 cannot completely eliminate the residual length of the conductive sheet 41 extending downward from the contact position with the contact plane 2212 to the lower edge 412 of the conductive sheet 41, the lower edge 22122 of the contact plane 2212 is closer to the lower edge 412 of the conductive sheet 41 than the arc-shaped contact point in the prior art. Therefore, the residual length of the conductive sheet 41 extending downward from the contact position with the contact plane 2212 to the lower edge 412 of the conductive sheet 41 can be reduced. The second extension 2213 extends upward from the upper end of the contact plane 2212, and the second extension 2213 is inclined towards the second spring arm 222 from the upper end of the contact plane 2212, which can guide the docking member 2000 inserted into the slot 13, making it easier for the docking member 2000 to be inserted into the slot 13 more smoothly.
[0043] like Figure 3 and Figure 5 As shown, the second spring arm 222 includes a third extension 2221, an abutment portion 2222, and a fourth extension 2223. The third extension 2221 is entirely located within the corresponding terminal slot 14. The lower end of the third extension 2221 is connected to the second connecting section 212 of the main body 21, and the upper end of the third extension 2221 is connected to the abutment portion 2222. The third extension 2221 is inclined from the lower end of the abutment portion 2222 toward the first spring arm 221.
[0044] like Figure 5 , Figure 6 and Figure 8As shown, the abutment portion 2222 is located within the corresponding terminal slot 14. When the abutment portion 4 of the connector 2000 is inserted into the slot 13, in the lateral direction, the projection of the abutment portion 2222 lies within the projection of the corresponding conductive sheet 41. The abutment portion 2222 abuts against the slot wall of the corresponding terminal slot 14 on the side away from the slot 13 in the lateral direction, so that the contact plane 2212 forms a surface contact with the corresponding conductive sheet 41. It can be understood that, viewed in the lateral direction, the projection of the abutment portion 2222 is located between the upper edge 411, the lower edge 412, and the two side edges 413 of the corresponding conductive sheet 41. The abutment portion 2222 and the slot wall of the corresponding terminal slot 14 can remain in contact from beginning to end, or the abutment portion 2222 may only contact the slot wall of the corresponding terminal slot 14 after the connector 2000 is inserted. The abutment portion 2222 can be arc-shaped to form a point contact with the groove wall of the corresponding terminal groove 14, or the abutment portion 2222 can be a vertical plane to form a surface contact with the groove wall of the corresponding terminal groove 14.
[0045] like Figures 6 to 8 As shown, in this embodiment, in the lateral direction, the projection of the abutment portion 2222 is located within the projection of the contact plane 2212, and the abutment portion 2222 is positioned directly opposite the middle portion of the contact plane 2212 in the vertical direction. This ensures that the reaction force generated when the abutment portion 2222 abuts against the groove wall of the corresponding terminal groove 14 is evenly applied to the contact plane 2212, preventing the contact plane 2212 from being skewed. Specifically, in the lateral direction, the projection of the abutment portion 2222 is located between the upper edge 22121 and the lower edge 22122 of the contact plane. In other embodiments, the abutment portion 2222 can be positioned higher than the upper edge 22121 of the contact plane 2212 in the vertical direction, but in the lateral direction, the projection of the abutment portion 2222 at least partially overlaps with the projection of the corresponding conductive sheet 41.
[0046] like Figure 3 and Figure 4As shown, the fourth extension 2223 is entirely located within the corresponding terminal slot 14. The fourth extension 2223 extends upward from the upper end of the abutment portion 2222, and is inclined towards the first spring arm 221 from the upper end of the abutment portion 2222. The upper end of the fourth extension 2223 is connected to the upper end of the second extension 2213 via a bending portion 223. This allows the reaction force generated when the abutment portion 2222 abuts against the wall of the corresponding terminal slot 14 to be transmitted from the third extension 2221 and the fourth extension 2223 to the first spring arm 221, resulting in a more uniform reaction force on the first spring arm 221 and ensuring planar contact between the contact plane 2212 and the mating member 2000. The angle formed by the fourth extension 2223 and the third extension 2221 is an obtuse angle, making the second spring arm 222 more gently sloping, resulting in a more regular shape for the signal terminal 2, reducing resonance in the signal terminal 2, and optimizing the SI performance of the signal terminal 2.
[0047] like Figures 3 to 4 As shown, the mounting portion 24 is connected to the lower end of the plate segment 214 and is exposed outside the corresponding terminal slot 14. In the lateral direction, the mounting portion 24 extends horizontally outward from the lower end of the plate segment 214 towards the side away from the slot 13. The mounting portion 24 is used to connect with the circuit board 3000. In this embodiment, the mounting portion 24 is flush with the circuit board 3000 and is electrically connected to the circuit board 3000 by soldering. In other embodiments, the mounting portion 24 can be inserted into the through hole of the circuit board 3000 to achieve an electrical connection between the signal terminal 2 and the circuit board 3000. The mounting portion 24 gradually narrows from the connection point with the plate segment 214 in the extending direction to avoid a sudden change in impedance of the signal terminal 2 from the plate segment 214 to the mounting portion 24, which would affect signal transmission. In the lateral direction, the mounting portions 24 of the plurality of signal terminals 2 located on both sides of the slot 13 extend in a direction away from each other to avoid solder bridging of the signal terminals 2 on both sides of the slot 13.
[0048] like Figures 1 to 2 As shown, the grounding terminal 3 and signal terminal pairs consisting of two adjacent signal terminals 2 are arranged alternately. In this embodiment, the structure of the grounding terminal 3 is the same as that of the signal terminal 2. Having the same structure facilitates the unified manufacturing of the signal terminal 2 and the grounding terminal 3. Furthermore, the terminal slot 14 for inserting the signal terminal 2 and the terminal slot 14 for inserting the grounding terminal 3 can be provided in the base 1 with the same structure, which also facilitates the manufacturing of the base 1. The structure of the grounding terminal 3 can refer to that of the signal terminal 2, and its specific structural designation is also the same as that of the signal terminal 2, so it will not be described again. In other embodiments, the structure of the grounding terminal 3 is different from that of the signal terminal 2.
[0049] In summary, the electrical connector of this utility model has the following beneficial effects:
[0050] (1) The signal terminal 2 of the electrical connector 1000 includes an elastic arm 22 and a main body 21. The elastic arm 22 is a continuous structure, and its two ends are connected to the main body 21, so that the elastic arm 22 and the main body 21 together form a closed groove 23, which reduces the length of the residual post on the elastic arm 22, avoids interference from the broken residual post with the signal transmission integrity, and improves the signal transmission integrity. The elastic arm 22 includes a first elastic arm 221 and a second elastic arm 222. The first elastic arm 221 is provided with a contact plane 2212 for contacting the conductive sheet 41. The second elastic arm 222 is provided with an abutment portion 2222 received in the terminal groove 14. When the mating member 2000 is inserted into the slot 13, in the lateral direction, the projection of the abutment portion 2222 at least partially overlaps with the projection of the corresponding conductive sheet 41. The abutment portion 2222 in the lateral direction The contact portion 2222 abuts against the wall of the terminal slot 14 on the side away from the slot 13, so that the reaction force generated when the contact portion 2222 abuts against the wall of the terminal slot 14 acts on the contact plane 2212, thereby causing the elastic arm 22 of the signal terminal 2 to undergo elastic deformation, preventing the elastic arm 22 of the signal terminal 2 from shifting away from the docking member 2000 as a whole, ensuring that the contact plane 2212 and the conductive sheet 41 of the docking member 2000 achieve planar contact. In the vertical direction perpendicular to the horizontal direction, compared with the upper edge 411 of the conductive sheet 41, the contact plane 2212 is closer to the lower edge 412 of the conductive sheet 41, so as to reduce the residual length generated by the conductive sheet 41 extending downward from the contact position with the contact plane 2212 to the lower edge 412 of the conductive sheet 41, reducing the interference of the residual effect on signal transmission and improving the signal transmission integrity.
[0051] (2) When the mating part 4 is inserted into the slot 13, in the vertical direction, the lower edge 22122 of the contact plane 2212 is lower than the lower edge 412 of the conductive sheet 41, which can avoid manufacturing errors. This ensures that the portion of the conductive sheet 41 extending downward from the contact position with the contact plane 2212 is in contact with the contact plane 2212, reducing the length of the residual stake on the conductive sheet 41, reducing the interference of the residual stake effect on signal transmission, and improving the integrity of signal transmission.
[0052] (3) In the transverse direction, the projection of the abutment portion 2222 overlaps at least partially with the projection of the contact plane 2212, so that the reaction force generated when the abutment portion 2222 abuts against the wall of the terminal groove 14 can be evenly applied to the contact plane 2212, avoiding the contact plane 2212 from being tilted, ensuring that the contact plane 2212 and the conductive sheet 41 of the docking member 2000 achieve planar contact, and when the abutment portion 2222 is set at the middle part of the contact plane 2212 in the vertical direction, the area of planar contact between the contact plane 2212 and the conductive sheet 41 of the docking member 2000 is larger and more stable.
[0053] (4) The first spring arm 221 has a first extension 2211 that extends obliquely from the lower end of the contact plane 2212 toward the second spring arm 222 and is connected to the main body. This extension 2211 makes way for the docking part 4 of the docking member 2000, reducing the insertion and removal force of the docking member 2000 into the slot 13. When the docking part 4 contacts the signal terminal 2, it provides support force to ensure stable contact between the contact plane 2212 and the corresponding conductive sheet 41. The first spring arm 221 has a second extension 2213 that extends obliquely from the upper end of the contact plane 2212 toward the second spring arm 222. This extension 2213 guides the docking member 2000 into the slot 13, making it easier for the docking member 2000 to be inserted into the slot 13 more smoothly. The abutment part 2222 of the second spring arm 222 The lower end extends downward with a third extension 2221, and the upper end of the abutting part 2222 extends upward with a fourth extension 2223. This allows the reaction force generated when the abutting part 2222 abuts against the wall of the terminal groove 14 to be transmitted from the third extension 2221 and the fourth extension 2223 to the first spring arm 221, so that the first spring arm 221 receives a more uniform reaction force. This ensures that the contact plane 2212 and the mating part 2000 achieve planar contact. The second extension 2213 and the fourth extension 2223 are connected by a bend 223, which avoids electrical breakage between the second extension 2213 and the second spring arm 222, reduces the length of the residual stake on the terminal, reduces the interference of the residual stake effect on signal transmission, and improves the integrity of signal transmission.
[0054] (5) The elastic arm 22 has the same width defined between its inner edge 224 and outer edge 225, which makes the terminal shape more regular, makes the impedance of the entire elastic arm 22 more matched, and optimizes the SI performance of the signal terminal 2.
[0055] (6) The first connecting segment 211 gradually widens from its connection with the first elastic arm 221 toward the direction away from the first elastic arm 221, and the second connecting segment 212 gradually widens from its connection with the second elastic arm 222 toward the direction away from the second elastic arm 222. This causes the impedance of the signal terminal 2 from the first elastic arm 221 to the first connecting segment 211 and from the second elastic arm 222 to the second connecting segment 212 to gradually change, thus avoiding a sudden change in the impedance of the signal terminal 2 from the elastic arm 22 to the main body 21, which would affect signal transmission. The width of the transition segment 213 gradually widens from top to bottom, causing the impedance of the signal terminal 2 from the first connecting segment 211, the second connecting segment 212 to the transition segment 213 to gradually change. This, in turn, causes the impedance of the signal terminal 2 from the entire elastic arm 22 to the main body 21 to gradually change, thus avoiding a sudden change in the impedance of the signal terminal 2 from the elastic arm 22 to the main body 21, which would affect signal transmission.
[0056] The above detailed description is only a description of the preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.
Claims
1. An electrical connector for inserting into a mating member, said mating member having a mating portion provided with a conductive plate, characterized in that, include: A base includes a slot and at least one terminal slot, the slot being used to insert the mating part, the terminal slot being located on one side of the slot in the lateral direction and communicating with the slot in the lateral direction; At least one signal terminal is fixed to the base. The signal terminal includes a main body and an elastic arm. The elastic arm is a continuous structure and its two ends are connected to the main body. The elastic arm includes a first elastic arm and a second elastic arm. The first elastic arm includes a contact plane exposed in the slot for contacting the conductive sheet. The second elastic arm includes an abutment portion received in the terminal slot. When the mating part is inserted into the slot, in the lateral direction, the projection of the abutting part at least partially overlaps with the projection of the corresponding conductive sheet. The abutting part abuts against the slot wall on the side of the terminal slot away from the slot in the lateral direction, so that the contact plane forms a surface contact with the conductive sheet. In the vertical direction perpendicular to the lateral direction, the contact plane is generally closer to the lower edge of the conductive sheet than the upper edge of the conductive sheet, so as to reduce the residual pile effect generated when the conductive sheet extends downward from the contact position with the contact plane to the lower edge of the conductive sheet.
2. The electrical connector according to claim 1, characterized in that: When the mating part is inserted into the slot, in the lateral direction, the projection of the abutting part is located within the projection of the corresponding conductive sheet.
3. The electrical connector according to claim 1, characterized in that: When the mating part is inserted into the slot, the lower edge of the contact plane is not higher than the lower edge of the conductive sheet in the vertical direction.
4. The electrical connector according to claim 3, characterized in that: When the mating part is inserted into the slot, the lower edge of the contact plane is lower than the lower edge of the conductive sheet in the vertical direction.
5. The electrical connector according to claim 1, characterized in that: In the lateral direction, the projection of the abutment portion at least partially overlaps with the projection of the contact plane.
6. The electrical connector according to claim 5, characterized in that: In the lateral direction, the abutting part is positioned directly opposite the middle part of the contact plane in the vertical direction.
7. The electrical connector according to claim 1, characterized in that: The first elastic arm further includes a first extension connected between the main body and the lower end of the contact plane, and a second extension extending upward from the upper end of the contact plane. The first extension is inclined toward the second elastic arm from the lower end of the contact plane, and the second extension is inclined toward the second elastic arm from the upper end of the contact plane. The second elastic arm further includes a third extension connected between the main body and the lower end of the abutment portion, and a fourth extension extending upward from the upper end of the abutment portion. The third extension is inclined toward the first elastic arm from the lower end of the abutment portion, and the fourth extension is inclined toward the first elastic arm from the upper end of the abutment portion. The elastic arm further includes a bent portion connected between the second extension and the fourth extension.
8. The electrical connector according to claim 1, characterized in that: The elastic arm and the main body together form a closed groove. The elastic arm has an inner edge facing the closed groove and an outer edge away from the closed groove. The elastic arm has the same width defined between its inner edge and its outer edge.
9. The electrical connector according to claim 1, characterized in that: The signal terminal is integrally formed from a metal plate through a blanking process.
10. The electrical connector according to claim 1, characterized in that: The main body includes a first connecting segment connected to the first spring arm, a second connecting segment connected to the second spring arm, and a gradient segment. The first connecting segment and the second connecting segment are spaced apart in the lateral direction. When viewed in the longitudinal direction perpendicular to the lateral and vertical directions, the first connecting segment gradually widens from its connection with the first spring arm toward the direction away from the first spring arm, and the second connecting segment gradually widens from its connection with the second spring arm toward the direction away from the second spring arm. The upper end of the gradient segment is connected to both the first connecting segment and the second connecting segment, and the width of the gradient segment gradually widens from top to bottom in the lateral direction.