Electric connector

Abstract

The invention discloses an electric connector which is used for vertically connecting a first butt joint element and a second butt joint element. The upper elastic arm is formed by extending upwards from the upper end of the main body part; the upper contact part is connected to the upper elastic arm; the upper abutting arm is formed by extending downwards from the upper contact part, and the upper abutting arm is provided with an upper extending part and an upper abutting part; the lower elastic arm extends downwards from the lower end of the main body part; the lower contact part is connected to the lower elastic arm; the lower abutting arm is formed by extending upwards from the lower contact part, and the lower abutting arm is provided with a lower extending part and a lower abutting part; in the left-right direction, the width of the upper contact part is not equal to the width of the lower contact part, the width of the upper extension part is not equal to the width of the lower extension part, and when the upper contact part and the lower contact part make contact with the first butt joint element and the second butt joint element respectively, the upper butt joint part and the lower butt joint part are electrically connected. The characteristic impedance of the upper contact part and the upper extension part is matched with the characteristic impedance of the lower contact part and the lower extension part, signal distortion is reduced, and signal transmission is facilitated.

Description

Technical field

[0001] The present invention relates to an electrical connector, and in particular to an electrical connector for electrically connecting a docking element and a circuit board. [Background Technology]

[0002] In the prior art, an electrical connector is used to connect a chip and a circuit board up and down, and the electrical connector includes: an insulating body, including a plurality of receiving grooves formed through the insulating body in the up and down directions; a plurality of terminals, respectively received in the plurality of receiving grooves, each terminal including: a main body, extending upward from the upper end of the main body to form an upper extension arm; an upper contact portion, connected to an end of the upper extension arm away from the main body, for contacting the chip; extending downward from the upper contact portion to form an upper abutting arm; extending downward from the lower end of the main body to form a lower extension arm; a lower contact portion, connected to an end of the lower extension arm away from the main body, for contacting the circuit board; extending upward from the lower contact portion to form a lower abutting arm; wherein the terminals are symmetrically arranged above and below the main body, that is, the structural contours formed by the terminals extending from the upper and lower parts of their main bodies are the same; when the upper extension arm abuts the chip upward and the lower extension arm abuts the circuit board downward, the upper abutting arm is electrically connected to the lower abutting arm.

[0003] However, as the high-frequency requirements of electrical connectors increase, and due to the different circuit designs on the chip side and the circuit board side, the structure of the existing terminals can no longer meet the current high-frequency requirements.

[0004] Therefore, it is necessary to design a new electrical connector to overcome the above-mentioned defects. [Summary of the invention]

[0005] The invention aims to provide an electrical connector that adjusts the overall impedance of the terminal and improves high-frequency performance by setting the width of the upper contact portion not equal to the width of the lower contact portion and the width of the upper extension portion not equal to the width of the lower extension portion in the left and right directions.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An electrical connector for connecting a first docking element and a second docking element in an upper and lower direction, comprising: a base having an upper surface and a lower surface arranged opposite to each other and at least one receiving groove penetrating the base in an upper and lower direction; at least one terminal received in the receiving groove, the terminal comprising: a main body; an upper spring arm extending upward from the upper end of the main body; an upper contact portion connected to an end of the upper spring arm away from the main body for contacting the first docking element; an upper abutting arm extending downward from the upper contact portion, the upper abutting arm having an upper extension portion and an upper abutting portion, the upper extension portion being arranged closer to the upper contact portion than the upper abutting portion ; A lower elastic arm extending downward from the lower end of the main body; a lower contact portion connected to an end of the lower elastic arm away from the main body, for contacting the second docking element; a lower abutting arm extending upward from the lower contact portion, the lower abutting arm having a lower extension portion and a lower abutting portion, the lower extension portion being arranged closer to the lower contact portion than the lower abutting portion; wherein, in the left and right directions, the width of the upper contact portion is not equal to the width of the lower contact portion, the width of the upper extension portion is not equal to the width of the lower extension portion, and when the upper contact portion contacts the first docking element upward and the lower contact portion contacts the second docking element downward, the upper abutting portion and the lower abutting portion are electrically connected.

[0008] Furthermore, the first docking member is a chip, the second docking member is a circuit board, the width of the upper contact portion is smaller than the width of the lower contact portion, and the width of the upper extension portion is smaller than the width of the lower extension portion.

[0009] Furthermore, the width of the upper contact portion is greater than half of the maximum width of the upper elastic arm, and the width of the lower contact portion is greater than half of the maximum width of the lower elastic arm.

[0010] Furthermore, the terminal includes an upper through hole and a lower through hole, the upper through hole penetrates the upper abutting arm along the thickness direction of the upper abutting arm, and the lower through hole penetrates the lower abutting arm along the thickness direction of the lower abutting arm, the upper abutting arm has an upper gradient section located between the upper extension portion and the upper abutting portion, and the lower abutting arm has a lower gradient section located between the lower extension portion and the lower abutting portion, the width of the upper gradient section in the left and right directions is gradually narrowed from the upper extension portion toward the lower abutting portion, and the width of the lower gradient section in the left and right directions is gradually narrowed from the lower extension portion toward the upper abutting portion, wherein the upper through hole at least partially extends in the upper gradient section, and its width in the left and right directions on the upper gradient section changes with the width of the upper gradient section, the lower through hole at least partially extends in the lower gradient section, and its width in the left and right directions on the lower gradient section changes with the width of the lower gradient section, and the maximum width of the upper gradient section is smaller than the maximum width of the lower gradient section.

[0011] Furthermore, the terminal includes an upper through slot and a lower through slot, the upper through slot penetrates the upper elastic arm along the thickness direction of the upper elastic arm, and the lower through slot penetrates the lower elastic arm along the thickness direction of the lower elastic arm, an upper support portion is extended from the bottom end of the upper through slot, and the upper support portion protrudes forward or backward relative to the main body, and a lower support portion is extended from the top end of the lower through slot, and the lower support portion protrudes forward or backward relative to the main body. In the left and right directions, the maximum width of the upper support portion is smaller than the maximum width of the lower support portion. When the first mating piece and the second mating piece are crimped onto the terminal, the upper abutting portion abuts the upper support portion, and the lower abutting portion abuts the lower support portion.

[0012] Furthermore, in the left-right direction, the width of the upper abutting portion is equal to the width of the lower abutting portion, the maximum width of the upper support portion is located at the bottom end thereof connected to the upper through slot, and the maximum width of the lower support portion is located at the top end thereof connected to the lower through slot.

[0013] Furthermore, there are multiple terminals and receiving slots, the multiple terminals include multiple grounding terminals and multiple signal terminals, the multiple receiving slots include multiple signal slots and multiple grounding slots, each grounding terminal is correspondingly received in a grounding slot, and each signal terminal is correspondingly received in a signal slot, in the left and right directions, the left and right sides of the signal slot facing the upper abutting portion and the lower abutting portion respectively protrude toward the upper abutting portion and the lower abutting portion to form a protrusion, wherein in the up and down directions, the protrusion is divided into an upper protrusion and a lower protrusion, and in the left and right directions, the lower protrusion is arranged closer to the lower abutting portion than the upper protrusion, and the lower protrusion is arranged directly opposite the lower abutting portion.

[0014] Furthermore, the terminal includes a supporting portion, which is connected to the main body, and a portion of the supporting portion protrudes forward or backward relative to the main body, wherein the upper abutting portion abuts against the upper surface of a portion of the supporting portion, and the lower abutting portion abuts against the lower surface of a portion of the supporting portion.

[0015] Furthermore, the terminal includes an upper through slot and a lower through slot, the upper through slot penetrates the upper elastic arm along the thickness direction of the upper elastic arm, and the lower through slot penetrates the lower elastic arm along the thickness direction of the lower elastic arm, the two upper protrusions are formed by protruding from the left and right edges of the upper through slot into the upper through slot, and the two lower protrusions are formed by protruding from the left and right edges of the lower through slot into the lower through slot, the two upper protrusions or the two lower protrusions are provided by a jig for pushing to install the terminal to the corresponding receiving slot, wherein they are arranged in the left and right directions, and in the two upper protrusions or the two lower protrusions, the length of each protrusion of the two for the jig to push is greater than the length of each protrusion of the other two.

[0016] Furthermore, one of the upper elastic arm or the lower elastic arm is respectively provided with a buckling portion on the left and right sides close to the receiving groove, and the other is respectively provided with a material connecting portion on the left and right sides close to the receiving groove. A buckling block protrudes inward on the left and right sides of the receiving groove respectively. The terminal is installed in the receiving groove through the jig to be buckled on the buckling block by the buckling portion. The material connecting portion is used to connect the material strip, wherein in the up and down directions, the upper protruding portion and the lower protruding portion are located between the buckling portion and the material connecting portion.

[0017] Further, in the up and down directions, the portion of the upper through groove located above the upper protrusion is defined as a first groove, the portion of the upper through groove located below the upper protrusion is defined as a second groove, the portion of the lower through groove located above the upper protrusion is defined as a third groove, and the portion of the lower through groove located below the lower protrusion is defined as a fourth groove, wherein the maximum width of the first groove is greater than the maximum width of the second groove, and the maximum width of the fourth groove is greater than the maximum width of the third groove.

[0018] Compared with the prior art, the electrical connector of the present invention has the following advantages:

[0019] By setting the width of the upper contact portion of the terminal to be unequal to the width of the lower contact portion, and the width of the upper extension portion to be unequal to the width of the lower extension portion, the characteristic impedance of the terminal near the first docking element or the second docking element is adjusted so that the characteristic impedance of the upper contact portion and the upper extension portion matches the characteristic impedance of the lower contact portion and the lower extension portion, thereby reducing signal reflection caused by impedance mismatch and signal distortion, thereby facilitating signal transmission.

Brief Description of the Drawings

[0020] Figure 1 is a perspective view of the electrical connector of the present invention;

[0021] Figure 2 for Figure 1 A partial top view of a signal terminal and a ground terminal hidden therein;

[0022] Figure 3 for Figure 2 Partial cross-sectional view along line AA;

[0023] Figure 4 for Figure 2 Partial cross-sectional view along line BB;

[0024] Figure 5 for Figure 1 A three-dimensional image of the middle terminal from another perspective;

[0025] Figure 6 for Figure 5 Rear view;

[0026] Figure 7 for Figure 5 Front view of

[0027] Figure 8 for Figure 7 Schematic diagram of the expansion of the terminal when connected to the strip;

[0028] Figure 9 for Figure 2 A partial cross-sectional view of the electrical connector taken along line CC in the vertical direction before crimping with the first docking element and the second docking element;

[0029] Figure 10 for Figure 9 A schematic diagram of the electrical connector after being crimped with the first docking component and the second docking component in the vertical direction;

[0030] Figure 11 The a in Figure 1 The electrical connector in FIG shows only one terminal of another structure, and is a schematic diagram before being crimped with the first docking element and the second docking element, and b is a schematic diagram after a is crimped with the first docking element and the second docking element in the vertical direction;

[0031] Figure 12 A simulation test diagram of the impedance of a terminal of an electrical connector of the background art after being compressed to a certain extent but not fully compressed;

[0032] Figure 13 This is a simulation test diagram of the impedance of the terminals of the electrical connector of the present invention after being compressed by the same amount.

[0033] Figure 14 A simulation test diagram of the insertion loss of a terminal of an electrical connector of the background art after being compressed to a certain amount but not fully compressed;

[0034] Figure 15 This is a simulation test diagram of the insertion loss of the terminals of the electrical connector of the present invention after being compressed by the same amount;

[0035] Figure 16 A simulation test diagram of the return loss of a terminal of an electrical connector of the background art after being compressed to a certain extent but not fully compressed;

[0036] Figure 17 This is a simulation test diagram of the return loss of the terminals of the electrical connector of the present invention after being compressed by the same amount.

[0037] Description of the accompanying drawings for the specific embodiments:

[0038]

[0039] [Specific implementation method]

[0040] To facilitate a better understanding of the purpose, structure, features, and effects of the present invention, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

[0041] For ease of understanding, the Z-axis extension direction is defined as the up-down direction (where the positive direction of the Z-axis is the upward direction), the Y-axis extension direction is defined as the left-right direction (where the positive direction of the Y-axis is the right direction), and the X-axis extension direction is defined as the front-back direction (where the positive direction of the X-axis is the forward direction).

[0042] like Figures 1 to 10 Figure 1 is a schematic diagram of an electrical connector 100 according to the present invention. The electrical connector 100 is used to electrically connect a first mating component 200 to a second mating component 300. The electrical connector 100 includes a base 1 and a plurality of terminals 2 disposed on the base 1. One end of the terminals 2 abuts the first mating component 200 and the other end abuts the second mating component 300. The plurality of terminals 2 include a plurality of signal terminals 2S and a plurality of ground terminals 2G. The signal terminals 2S and the ground terminals 2G have the same profile. In this embodiment, the first mating component 200 is a chip, and the second mating component 300 is a circuit board.

[0043] like Figure 2 and Figure 3 As shown, the base body 1 is made of an insulating material and has an upper surface 1a and a lower surface 1b disposed opposite each other. The base body 1 has a plurality of receiving slots 10, which are arranged in multiple rows along the front-to-back direction. The receiving slots 10 in two adjacent rows are staggered front-to-back. The receiving slots 10 extend vertically through the upper surface 1a and the lower surface 1b, and the plurality of terminals 2 are received in the plurality of receiving slots 10 in a one-to-one correspondence. The left and right sides of each receiving slot 10 are respectively recessed inward to form a limiting slot 101, which extends downward through the lower surface 1b. A retaining block 102 is disposed above each limiting slot 101, and the lower surface of the retaining block 102 is inclined inwardly toward the limiting slot 101. In other embodiments, the base body 1 can be composed of components made of different materials, for example, a combination of components made of plastic and components made of conductive material.

[0044] like Figure 2 and Figure 4As shown, in this embodiment, the multiple receiving grooves 10 are divided into multiple signal grooves 10A and multiple grounding grooves 10B, each signal terminal 2S is correspondingly received in a signal groove 10A, and each grounding terminal 2G is correspondingly received in a grounding groove 10B. The left and right sides of the signal groove 10A respectively protrude into the signal groove 10A to form a protrusion C, wherein, in the front-to-back direction, the protrusion C and the limit groove 101 are arranged with a front-to-back interval, and in the up-down direction, the protrusion C is divided into an upper protrusion C1 and a lower protrusion C2, in the left-right direction, the lower protrusion C2 is protruded more than the upper protrusion C1 and the two are connected up and down, so that the lower protrusion C2 has a surface that protrudes relative to the upper protrusion C1 and faces upward, and this surface is the parting surface formed when the base body 1 is injection molded.

[0045] like Figure 5 As shown, the terminal 2 is formed by stamping and bending a metal plate. The terminal 2 includes a main body 20, an upper spring arm 21, an upper through slot 22, an upper contact portion 23, an upper abutting arm 24, a lower spring arm 25, a lower through slot 26, a lower contact portion 27 and a lower abutting arm 28. The upper spring arm 21 extends upward from the upper end of the main body 20. The upper contact portion 23 is connected to the end of the upper spring arm 21 away from the main body 20. The upper contact portion 23 is used to abut the first docking element 20. 0, an upper abutting arm 24 extends downward from the upper contact portion 23, a lower elastic arm 25 extends downward from the lower end of the main body 20, a lower contact portion 27 is connected to the end of the lower elastic arm 25 away from the main body 20, and the lower contact portion 27 is used to abut the second docking element 300, and a lower abutting arm 28 extends upward from the lower contact portion 27. The upper through-slot 22 penetrates the upper elastic arm 21 along the thickness direction of the upper elastic arm 21, and the lower through-slot 26 penetrates the lower elastic arm 25 along the thickness direction of the lower elastic arm 25. The terminal 2 also includes two supporting portions 29, which are defined as an upper supporting portion 29a and a lower supporting portion 29b. The upper supporting portion 29a is formed by bending and extending from the bottom end of the upper through-slot 22, and the lower supporting portion 29b is formed by bending and extending from the top end of the lower through-slot 26. The upper supporting portion 29a is used to contact the upper abutting arm 24, and the lower supporting portion 29b is used to contact the lower abutting arm 28.

[0046] like Figure 3 As shown, the main body 20 is flat, and the left and right sides of the main body 20 protrude outward to form at least one protrusion 201, which interferes with the side wall of the limiting groove 101. In this embodiment, the left and right sides of the main body 20 protrude outward to form two protrusions 201.

[0047] like Figure 5As shown, the upper elastic arm 21 extends vertically upward from the upper end of the main body 20 and then bends forward and extends away from the main body 20. The upper through groove 22 forms two upper branches 211 on the left and right sides of the upper elastic arm 21. One end of each of the two upper branches 211 is connected to the top of the main body 20. The upper contact portion 23 connects the other ends of the two upper branches 211. Therefore, the upper contact portion 23 is located in the front of the main body 20. The upper contact portion 23 has an upper convex bulge 231 formed by protruding upward, and the upper convex bulge 231 is used to abut the first docking element 200. The lower elastic arm 25 extends vertically downward from the lower end of the main body 20 and then bends forward and extends away from the main body 20. The lower through slot 26 forms two lower branches 251 on the left and right sides of the lower elastic arm 25. One end of each of the two lower branches 251 is connected to the bottom end of the main body 20. The lower contact portion 27 connects the other ends of the two lower branches 251. Therefore, the lower contact portion 27 is located at the front of the main body 20. The lower contact portion 27 has a lower protrusion 271 that protrudes downward to form a contact with the second docking element 300.

[0048] like Figure 3 and Figure 5 As shown, the two upper branches 211 are respectively provided with a latching portion 212 on the left and right sides close to the receiving slot 10. The upper surface of the latching portion 212 is designed to be inclined from the inside to the outside in the left and right direction, and the inclination direction is the same as the inclination direction of the lower surface of the latching block 102. When the terminal 2 is installed in the receiving slot 10, the latching portion 212 is used to latch the latching block 102 to fix the terminal 2 in the receiving slot 10. The two lower branches 251 are respectively provided with a connecting portion 252 on the left and right sides close to the receiving slot 10. The connecting portion 252 is used to connect a material strip E. In the vertical direction, the protrusion 201 is located between the latching portion 212 and the connecting portion 252.

[0049] like Figure 6As shown, the terminal 2 also includes two upper protrusions 213 and two lower protrusions 253. In the left and right directions, the two upper protrusions 213 are respectively protruded from the left and right edges of the upper through groove 22 (i.e., the side edges of the two upper branches 211 facing the upper through groove 22) into the upper through groove 22, and the two lower protrusions 253 are respectively protruded from the left and right edges of the lower through groove 26 (i.e., the side edges of the two lower branches 251 facing the lower through groove 26) into the lower through groove 26, which facilitates the stamping forming of the terminal 2. In the vertical direction, the two upper protrusions 213 and the two lower protrusions 253 are located between the latching portion 212 and the connecting portion 252, wherein the two lower protrusions 253 are provided for a jig (not shown) to push against so as to install the terminal 2 from bottom to top in the corresponding receiving slot 10. In the left-right direction, the length of each protrusion of the two lower protrusions 253 is greater than the length of each protrusion of the two upper protrusions 213, so as to increase the pushing area of ​​the jig and facilitate assembly. Of course, in other embodiments, the two upper protrusions 213 can also be provided to arch the jig for pushing, so that the length of each protrusion of the two upper protrusions 213 is greater than the length of each protrusion of the two lower protrusions 253. The connecting portion 252 is provided on the left and right sides of the two upper branches 211 near the receiving slot 10, and the latching portion 212 is provided on the left and right sides of the two lower branches 251 near the receiving slot 10.

[0050] like Figure 6 As shown, in the up and down directions, the portion of the upper through groove 22 located above the upper protrusion 213 is defined as a first groove 221, the portion of the upper through groove 22 located below the upper protrusion 213 is defined as a second groove 222, and the upper branch 211 is respectively provided with an upper tearing surface 214 on the left and right sides facing the second groove 222, the portion of the lower through groove 26 located above the upper protrusion 213 is defined as a third groove 261, the portion of the lower through groove 26 located below the lower protrusion 253 is defined as a fourth groove 262, and the lower upper branch 211 is respectively provided with a lower tearing surface 254 on the left and right sides facing the third groove 261, wherein the maximum width of the first groove 221 is greater than the maximum width of the second groove 222, and the maximum width of the fourth groove 262 is greater than the maximum width of the third groove 261.

[0051] like Figure 5As shown, the upper abutting arm 24 includes an upper extension portion 241, an upper gradient section 242, and an upper abutting portion 243. The upper extension portion 241 extends downward and away from the main body portion 20 (i.e., outward) from the end of the upper contact portion 23 away from the upper elastic arm 21. The upper gradient section 242 is formed by the end of the upper extension portion 241 away from the upper contact portion 23 extending downward and toward the main body portion 20 (i.e., inward). The upper abutting portion 243 is formed by the end of the upper gradient section 242 away from the upper gradient section 242 extending inwardly and upwardly. The lower abutting arm 28 includes a lower extension portion 281, a lower gradient section 282, and a lower abutting portion 283. The lower extension portion 281 extends upward and away from the main body 20 (i.e., outward) from the end of the lower contact portion 27 away from the lower elastic arm 25. The lower gradient section 282 is formed by the lower extension portion 281 extending upward and toward the main body 20 (i.e., inward). The lower abutting portion 283 is formed by the lower gradient section 282 extending inward and bending back downward.

[0052] like Figure 7 As shown, the terminal 2 also includes an upper through hole G1 and a lower through hole G2. The upper through hole G1 passes through the upper abutting arm 24 along the thickness direction of the upper abutting arm 24, and the lower through hole G2 passes through the lower abutting arm 28 along the thickness direction of the lower abutting arm 28, wherein the upper through hole G1 extends from the upper extension portion 241 to the upper gradient section 242, and the lower through hole G2 extends from the lower extension portion 281 to the lower gradient section 282.

[0053] like Figure 5 As shown, in the up-down direction, the upper support portion 29a and the lower support portion 29b protrude forward relative to the main body portion 20, so that the upper support portion 29a is located below the upper abutting portion 243, and the lower support portion 29b is located above the lower abutting portion 283. Of course, in other embodiments, the upper support portion 29a and the lower support portion 29b can also protrude backward relative to the main body portion 20, or one of the upper support portion 29a and the lower support portion 29b can protrude backward relative to the main body portion 20, and the other can protrude forward relative to the main body portion 20. In this way, the front-to-rear position of the upper contact portion 23 and the lower contact portion 27 relative to the main body portion 20 can be changed according to needs, and the bending directions of the upper elastic arm 21, the lower elastic arm 25, the upper abutting arm 24 and the lower abutting arm 28 can also be changed accordingly. Of course, in other embodiments, such as Figure 11 As shown, another terminal 2 in the electrical connector 100 is provided with only one supporting portion 29 . The supporting portion 29 is connected to the main body 20 , and a portion of the supporting portion 29 protrudes forward or backward relative to the main body 20 .

[0054] like Figure 5As shown, in the front-to-back direction, the upper support portion 29a includes an upper first section 29a1 and an upper second section 29a2, the upper first section 29a1 is formed by bending and extending forward from the bottom end of the upper through groove 22, and the upper second section 29a2 is formed by continuing to extend forward from the upper first section 29a1, and the lower support portion 29b includes a lower first section 29b1 and a lower second section 29b2, the lower first section 29b1 is formed by bending and extending forward from the top end of the lower through groove 26, and the lower second section 29b2 is formed by continuing to extend forward from the lower first section 29b1, as shown in FIG. Figure 7 and Figure 8 As shown, the opposite sides of the upper first section 29a1 are torn from the two upper tearing surfaces 214, and the opposite sides of the lower first section 29b1 are torn from the two lower tearing surfaces 254. In the left-right direction, the width of the upper first section 29a1 is greater than the width of the upper second section 29a2, and the width of the lower first section 29b1 is greater than the width of the lower second section 29b2. Furthermore, as shown in FIG. Figure 7 and Figure 8 As shown, the maximum width of the upper support portion 29a is defined as the first width W1, that is, the first width W1 is at the upper first section 29a1, and the maximum width of the lower support portion 29b is defined as the second width W2, that is, the second width W2 is at the lower first section 29b1, and the first width W1 is smaller than the second width W2. Figure 3 As shown, the process of assembling the terminal 2 in the corresponding receiving groove 10 is as follows: each terminal 2 is subjected to an upward thrust through the two lower protrusions 253, so that the terminal 2 is installed in the corresponding receiving groove 10 from bottom to top, and the holding portion 212 moves upward through the limiting groove 101. Since the upper surface of the holding portion 212 and the lower surface of the holding block 102 have the same inclination direction, in the up and down direction, the upper surface of the holding portion 212 and the lower surface of the holding block 102 slide, so that the holding portion 212 is fixed to the corresponding receiving groove 10. The holding block 102 enters between the locking portion 212 and the uppermost protrusion 201, and the terminal 2 moves upward to the lower surface 1b of the locking portion 212 and is locked on the locking block 102. In the left and right directions, the protrusion 201 interferes with the groove wall of the limiting groove 101. At this time, the terminal 2 has been installed in the receiving groove 10. As shown in the figure, in the left and right directions, the lower protrusion C2 is closer to the lower abutting portion 283 than the upper protrusion C1, and the lower protrusion C2 is directly opposite to the lower abutting portion 283.

[0055] like Figure 9 and Figure 10As shown, in the up-down direction, when the upper convex portion 231 is abutted downward by the first docking element 200 and the lower convex portion 271 is abutted upward by the second docking element 300, the upper contact portion 23 moves downward and the lower contact portion 27 moves upward, thereby driving the upper abutting portion 243 to move downward until it abuts against the upper support portion 29a, and the lower abutting portion 283 to move upward until it abuts against the lower support portion 29b. More specifically, the upper abutting portion 243 abuts against the upper first section 29a1, and the lower abutting portion 283 abuts against the lower first section 29b1. Since the width of the upper first section 29a1 is greater than the width of the upper second section 29a2, and the width of the lower first section 29b1 is greater than the width of the lower second section 29b2, the upper second section 29a2 provides a larger support area for the upper first section 29a1, and the lower second section 29b2 provides a larger support area for the lower first section 29b1, thereby strengthening the strength of the upper support portion 29a and the lower support portion 29b connected to the main body 20, preventing large deformation or even disconnection caused by force, and ensuring the connection stability of the terminal 2. Alternatively, Figure 11 As shown, when the upper convex 231 is abutted downward by the first docking element 200 and the lower convex 271 is abutted upward by the second docking element 300, the upper contact portion 23 moves downward and the lower contact portion 27 moves upward, so that the upper abutting portion 243 abuts against the upper surface 1a of a portion of the support portion 29 and the lower abutting portion 283 abuts against the lower surface 1b of a portion of the support portion 29.

[0056] like Figure 8As shown, in the left and right directions, the width of the upper contact portion 23 is defined as the third width W3, the width of the lower contact portion 27 is defined as the fourth width W4, the width of the upper extension portion 241 is defined as the fifth width W5, the fifth width W5 is equal to the third width W3, the width of the lower extension portion 281 is defined as the sixth width W6, the sixth width W6 is equal to the fourth width W4, and the width of the upper contact portion 23 is not equal to the width of the lower contact portion 27, and the width of the upper extension portion 241 is not equal to the width of the lower extension portion 281, that is, the third width W3 is not equal to the fourth width W4, that is, the fifth width W5 is not equal to the sixth width W6. In this embodiment, since the first docking component 200 is a chip and the second docking component 300 is a circuit board, the circuit settings on the chip and the circuit board are different, resulting in inconsistent effects of the two on the same terminal 2, that is, the impedance of the same terminal 2 near the docking of the two is inconsistent, and the lower contact portion 27 and the lower extension portion 281 are closer to the circuit board than the upper contact portion 23 and the upper extension portion 241. If the terminal 2 structure in the background technology is adopted, the impedance of the lower contact portion 27 and the lower extension portion 281 near the circuit board is higher than the impedance of the upper contact portion 23 and the upper extension portion 241 near the chip. Therefore, the impedance of the lower contact portion 27 needs to be set lower than the impedance of the upper contact portion 23, and the impedance of the lower extension portion 281 needs to be set lower than the impedance of the upper extension portion 241. Therefore, the third width W3 is set smaller than the fourth width W4, and the fifth width W5 is set smaller than the sixth width W6, so as to reduce the impedance of the lower contact portion 27 and the lower extension portion 281, so that the characteristic impedance of the upper contact portion 23 and the upper extension portion 241 matches the characteristic impedance of the lower contact portion 27 and the lower extension portion 281, thereby reducing signal reflection caused by impedance mismatch and signal distortion, thereby facilitating signal transmission.

[0057] In addition, Figure 4 As shown, in the signal slot 10A, the bump C is arranged close to the upper abutting portion 243 and the lower abutting portion 283. Specifically, since the lower abutting portion 283 is arranged closer to the circuit board than the upper abutting portion 243, the lower bump C2 is arranged closer to the lower abutting portion 283 than the upper bump C1, so as to increase the capacitance near the lower abutting portion 283 of the signal terminal 2S and reduce the impedance of the lower abutting portion 283.

[0058] like Figure 8As shown, the third width W3 of the upper contact portion 23 is set to be greater than half the maximum width of the upper elastic arm 21, and the fourth width W4 of the lower contact portion 27 is set to be greater than half the maximum width of the lower elastic arm 25. This increases the contact area between the upper contact portion 23 and the first docking element 200, and increases the contact area between the lower contact portion 27 and the second docking element 300. At the same time, the cross-sectional area of ​​the terminal 2 is increased. The increase in cross-sectional area reduces inductance, thereby reducing the impedance of the upper contact portion 23 and the impedance of the lower contact portion 27. This matches the impedance of the main body 20, reduces signal reflection, and avoids signal distortion.

[0059] like Figure 5 and Figure 8 As shown, the width of the upper gradient section 242 in the left-right direction is gradually narrowed from the upper extension portion 241 toward the lower abutting portion 283, and the width of the lower gradient section 282 in the left-right direction is gradually narrowed from the lower extension portion 281 toward the upper abutting portion 243, and the upper through hole G1 at least partially extends in the upper gradient section 242, and the width of the upper through hole G1 in the left-right direction on the upper gradient section 242 changes with the width of the upper gradient section 242, and the lower through hole G2 at least partially extends in the lower gradient section 282, and the width of the lower through hole G2 in the left-right direction on the lower gradient section 282 changes with the width of the lower gradient section 282, so as to reduce the discontinuity of the impedance of the upper abutting arm 24 and the lower abutting arm 28 of the terminal 2. The maximum width of the upper gradient section 242 is defined as a seventh width W7. In this embodiment, the seventh width W7 is equal to the third width W3 and the fifth width W5. The maximum width of the lower gradient section 282 is an eighth width W8. The eighth width W8 is equal to the fourth width W4 and the sixth width W6. The seventh width W7 is set to be smaller than the eighth width W8 to reduce the impedance of the lower gradient section 282. At the same time, the impedance of the upper gradient section 242 matches the impedance at the lower gradient section 282, and the impedance of the upper extension portion 241 matches the impedance of the lower extension portion 281. In addition, since the upper abutting portion 243 is farther away from the first docking element 200 than the upper extension portion 241, it is less affected by the first docking element 200. The lower abutting portion 283 is farther away from the second docking element 300 than the lower extension portion 281 and is less affected by the second docking element 300. To facilitate stamping and ensure impedance matching between the upper abutting portion 243 and the lower abutting portion 283, the width of the upper abutting portion 243 in the left-right direction is equal to the width of the lower abutting portion 283.

[0060] like Figure 5 and Figure 8As shown, the fifth width W5 of the upper extension portion 241 is set to be equal to the third width W3 of the upper contact portion 23, and the sixth width W6 of the lower abutting portion 283 is set to be equal to the fourth width W4 of the lower contact portion 27, so that the impedance of the upper extension portion 241 matches the impedance at the upper contact portion 23, and the impedance of the lower extension portion 281 matches the impedance at the lower contact portion 27, which facilitates the stamping forming of the terminal 2 and ensures that when the upper convex bump 231 is abutted by the first docking element 200, the structure of the upper contact portion 23 connected to the upper extension portion 241 is stable, and when the lower convex bump 271 is abutted by the second docking element 300, the structure of the lower contact portion 27 connected to the lower extension portion 281 is stable to prevent breakage.

[0061] In order to better understand the technical effects that can be achieved by the technical solution of this application, Figure 12 This is a simulation test diagram of the impedance of the terminal 2 of the electrical connector 100 of the background art after being compressed to a certain amount but not reaching full compression. Figure 13 The impedance simulation test diagram of the terminal 2 of the electrical connector 100 of the present invention after being compressed by the same amount is shown in FIG. 1 , wherein the horizontal axis is time, the vertical axis is ohm, m1 is the end of the terminal 2 close to the chip, m2 is the middle part of the terminal 2, and m3 is the end of the terminal 2 close to the circuit board. Figure 12 It can be seen that the terminal 2 of the electrical connector 100 of the background art clearly exceeds the 90 ohm specification line at point m3, and the impedance change line between m1, m3, and m2 changes sharply, that is, the impedance is unevenly distributed. Figure 13 The terminal 2 of the electrical connector 100 of the present invention does not exceed the 90 ohm specification line at m3, and the impedance change line between m1, m3, and m2 is relatively Figure 12 The impedance changes smoothly and is evenly distributed. It can be seen that the technical solution of the present invention can greatly improve the high-frequency performance of the terminal 2 in the electrical connector 100.

[0062] Figure 14 、 Figure 16 This is a simulation test diagram of the insertion loss (IL) and return loss (RL) of the terminal 2 of the electrical connector 100 of the background technology after being compressed to a certain amount but not fully compressed. The horizontal axis is frequency, the vertical axis is decibel, and m2 is the middle part of the terminal 2. Figure 15 and Figure 17 The simulation test diagram of the insertion loss and return loss of the terminal 2 of the electrical connector 100 of the present invention after being compressed by the same amount is shown in FIG. Figure 15 The insertion loss of m2 is significantly higher than Figure 14 The insertion loss of m2 is better, from Figure 17 The return loss of m2 is significantly higher than Figure 16 The return loss of m2 is better than that of m2. It can be seen that the technical solution of the present invention can greatly improve the insertion loss and return loss of the terminal 2 in the electrical connector 100.

[0063] In summary, the electrical connector 100 of the present invention has the following beneficial effects:

[0064] (1) Compared with the prior art, the present invention sets the width of the upper contact portion 23 to be different from the width of the lower contact portion 27, and the width of the upper extension portion 241 to be different from the width of the lower extension portion 281, that is, the first width W1 is different from the second width W2, and the third width W3 is different from the fourth width W4. In this embodiment, since the first docking component 200 is a chip and the second docking component 300 is a circuit board, the circuit settings on the chip and the circuit board are different, resulting in inconsistent effects on the same terminal 2, that is, the impedance near the same terminal 2 where the two are docked is inconsistent, and the lower contact portion 27 and the lower extension portion 281 are closer to the circuit board than the upper contact portion 23 and the upper extension portion 241. If the terminal 2 structure in the background art is adopted, Therefore, the impedance of the lower contact portion 27 and the lower extension portion 281 near the circuit board is higher than the impedance of the upper contact portion 23 and the upper extension portion 241 near the chip. Therefore, the impedance of the lower contact portion 27 needs to be set lower than the impedance of the upper contact portion 23, and the impedance of the lower extension portion 281 needs to be set lower than the impedance of the upper extension portion 241. Therefore, the third width W3 is set to be smaller than the fourth width W4, and the fifth width W5 is set to be smaller than the sixth width W6, so as to reduce the impedance of the lower contact portion 27 and the lower extension portion 281, so that the characteristic impedance of the upper contact portion 23 and the upper extension portion 241 matches the characteristic impedance of the lower contact portion 27 and the lower extension portion 281, thereby reducing signal reflection caused by impedance mismatch, reducing signal distortion, and facilitating signal transmission.

[0065] (2) The maximum width of the upper tapered section 242 is defined as the seventh width W7, and the maximum width of the lower tapered section 282 is defined as the eighth width W8. The seventh width W7 is set to be smaller than the eighth width W8 to reduce the impedance of the lower tapered section 282 so that the impedance of the lower tapered section 282 matches the impedance of the upper tapered section 242.

[0066] (3) The width of the upper contact portion 23, i.e., the third width W3, is set to be greater than half of the maximum width of the upper elastic arm 21, and the width of the lower contact portion 27, i.e., the fourth width W4, is set to be greater than half of the maximum width of the lower elastic arm 25, so as to increase the contact area when the upper contact portion 23 abuts against the first docking element 200, and increase the contact area when the lower contact portion 27 abuts against the second docking element 300. At the same time, the cross-sectional area of ​​the terminal 2 is increased. The increase in the cross-sectional area reduces the inductance, thereby reducing the impedance of the upper contact portion 23 and the impedance of the lower contact portion 27, thereby matching the impedance of the main body 20, reducing signal reflection, and avoiding signal distortion.

[0067] (4) The width of the upper gradient section 242 in the left-right direction is set to gradually narrow from the upper extension portion 241 toward the lower abutting portion 283, and the width of the lower gradient section 282 in the left-right direction is set to gradually narrow from the lower extension portion 281 toward the upper abutting portion 243, wherein the upper through hole G1 extends from the upper extension portion 241 to the upper gradient section 242, and the width of the upper through hole G1 in the left-right direction on the upper gradient section 242 changes as the width of the upper gradient section 242 changes, and the lower through hole G2 extends from the lower extension portion 281 to the lower gradient section 282, and the width of the lower through hole G2 in the left-right direction on the lower gradient section 282 changes as the width of the lower gradient section 282 changes, so as to reduce the discontinuity of the impedance.

[0068] (5) The upper abutting portion 243 is further away from the first abutting element 200 than the upper extending portion 241 and is less affected by the first abutting element 200. The lower abutting portion 283 is further away from the second abutting element 300 than the lower extending portion 281 and is less affected by the second abutting element 300. To facilitate stamping and ensure impedance matching between the upper abutting portion 243 and the lower abutting portion 283, the width of the upper abutting portion 243 in the left-right direction is equal to the width of the lower abutting portion 283.

[0069] (6) In the signal slot 10A, the lower protrusion C2 is arranged closer to the lower abutting portion 283 than the upper protrusion C1, and the lower protrusion C2 is arranged directly opposite the lower abutting portion 283, which increases the capacitance near the lower abutting portion 283 and reduces the impedance of the lower abutting portion 283.

[0070] (7) The terminal 2 further includes two upper protrusions 213 and two lower protrusions 253. In the left-right direction, the two upper protrusions 213 are respectively protruded from the left and right edges of the upper through groove 22 (i.e., the side edges of the two upper branches 211 facing the upper through groove 22) into the upper through groove 22, and the two lower protrusions 253 are respectively protruded from the left and right edges of the lower through groove 26 (i.e., the side edges of the two lower branches 251 facing the lower through groove 26) into the lower through groove 26, so as to facilitate the stamping of the terminal 2. The two lower protrusions 253 are arranged in the left-right direction, and the protruding length of each of the two lower protrusions 253 for a jig (not shown) to push is greater than the protruding length of each of the two upper protrusions 213, so as to increase the pushing area of ​​the jig and facilitate assembly.

[0071] The above detailed description is only an illustration of the preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the description and illustrations of this invention are included in the patent scope of this invention.

Claims

1. An electrical connector for vertically connecting a first docking element and a second docking element, characterized in that: include: A base body having an upper surface and a lower surface disposed opposite to each other and at least one receiving groove extending through the base body; At least one terminal is received in the receiving slot, and the terminal includes: a main body; An upper elastic arm is formed extending upward from the upper end of the main body; an upper contact portion connected to an end of the upper elastic arm away from the main body portion, for contacting the first docking element; An upper abutting arm is formed by extending downward from the upper contact portion, the upper abutting arm having an upper extension portion and an upper abutting portion, the upper extension portion being arranged closer to the upper contact portion than the upper abutting portion; A lower elastic arm is formed extending downward from the lower end of the main body; a lower contact portion connected to an end of the lower elastic arm away from the main body and configured to contact the second docking element; a lower abutting arm extending upward from the lower contact portion, the lower abutting arm comprising a lower extending portion and a lower abutting portion, the lower extending portion being disposed closer to the lower contact portion than the lower abutting portion; In which, in the left and right directions, the width of the upper contact portion is not equal to the width of the lower contact portion, the width of the upper extension portion is not equal to the width of the lower extension portion, and when the upper contact portion contacts the first docking element upward and the lower contact portion contacts the second docking element downward, the upper abutting portion and the lower abutting portion are electrically connected.

2. The electrical connector according to claim 1, wherein: The first docking member is a chip, the second docking member is a circuit board, the width of the upper contact portion is smaller than the width of the lower contact portion, and the width of the upper extension portion is smaller than the width of the lower extension portion.

3. The electrical connector according to claim 2, wherein: The width of the upper contact portion is greater than half of the maximum width of the upper elastic arm, and the width of the lower contact portion is greater than half of the maximum width of the lower elastic arm.

4. The electrical connector according to claim 2, wherein: The terminal includes an upper through hole and a lower through hole, the upper through hole penetrates the upper abutting arm along the thickness direction of the upper abutting arm, and the lower through hole penetrates the lower abutting arm along the thickness direction of the lower abutting arm, the upper abutting arm has an upper gradient section located between the upper extension portion and the upper abutting portion, and the lower abutting arm has a lower gradient section located between the lower extension portion and the lower abutting portion, the width of the upper gradient section in the left and right directions is gradually narrowed from the upper extension portion toward the lower abutting portion, and the width of the lower gradient section in the left and right directions is gradually narrowed from the lower extension portion toward the upper abutting portion, wherein the upper through hole at least partially extends in the upper gradient section, and its width in the left and right directions on the upper gradient section changes with the width of the upper gradient section, and the lower through hole at least partially extends in the lower gradient section, and its width in the left and right directions on the lower gradient section changes with the width of the lower gradient section, and the maximum width of the upper gradient section is smaller than the maximum width of the lower gradient section.

5. The electrical connector according to claim 2, wherein: The terminal includes an upper through slot and a lower through slot, the upper through slot penetrates the upper elastic arm along the thickness direction of the upper elastic arm, and the lower through slot penetrates the lower elastic arm along the thickness direction of the lower elastic arm, an upper support portion is extended from the bottom end of the upper through slot, and the upper support portion protrudes forward or backward relative to the main body, and a lower support portion is extended from the top end of the lower through slot, and the lower support portion protrudes forward or backward relative to the main body. In the left and right directions, the maximum width of the upper support portion is smaller than the maximum width of the lower support portion. When the first docking piece and the second docking piece are crimped onto the terminal, the upper abutting portion abuts the upper support portion, and the lower abutting portion abuts the lower support portion.

6. The electrical connector according to claim 5, wherein: In the left and right directions, the width of the upper abutting portion is equal to the width of the lower abutting portion, the maximum width of the upper support portion is located at the bottom end thereof connected to the upper through slot, and the maximum width of the lower support portion is located at the top end thereof connected to the lower through slot.

7. The electrical connector according to claim 2, wherein: There are multiple terminals and receiving slots, the multiple terminals include multiple grounding terminals and multiple signal terminals, the multiple receiving slots include multiple signal slots and multiple grounding slots, each grounding terminal is correspondingly received in a grounding slot, and each signal terminal is correspondingly received in a signal slot. In the left and right directions, the left and right sides of the signal slot facing the upper abutting portion and the lower abutting portion respectively protrude toward the upper abutting portion and the lower abutting portion to form a protrusion, wherein in the up and down directions, the protrusion is divided into an upper protrusion and a lower protrusion, and in the left and right directions, the lower protrusion is arranged closer to the lower abutting portion than the upper protrusion, and the lower protrusion is arranged directly opposite the lower abutting portion.

8. The electrical connector according to claim 1, wherein: The terminal includes a supporting portion connected to the main body, and a portion of the supporting portion protrudes forward or backward relative to the main body, wherein the upper abutting portion abuts against the upper surface of a portion of the supporting portion, and the lower abutting portion abuts against the lower surface of a portion of the supporting portion.

9. The electrical connector according to claim 1, wherein: The terminal includes an upper through slot and a lower through slot, the upper through slot penetrates the upper elastic arm along the thickness direction of the upper elastic arm, and the lower through slot penetrates the lower elastic arm along the thickness direction of the lower elastic arm, the two upper protrusions are respectively formed from the left and right edges of the upper through slot to protrude into the upper through slot, and the two lower protrusions are respectively formed from the left and right edges of the lower through slot to protrude into the lower through slot, the two upper protrusions or the two lower protrusions are provided for a jig to push for installing the terminal to the corresponding receiving slot, wherein they are arranged in the left and right directions, and in the two upper protrusions or the two lower protrusions, the length of each protrusion of the two for the jig to push is greater than the length of each protrusion of the other two.

10. The electrical connector according to claim 9, wherein: One of the upper elastic arm or the lower elastic arm is respectively provided with a holding portion on the left and right sides close to the receiving groove, and the other is respectively provided with a connecting portion on the left and right sides close to the receiving groove. A holding block protrudes inward on the left and right sides of the receiving groove respectively. The terminal is installed in the receiving groove through the jig to be buckled on the holding block by the holding portion. The connecting portion is used to connect the material strip, wherein in the up and down directions, the upper protruding portion and the lower protruding portion are located between the holding portion and the connecting portion.

11. The electrical connector according to claim 9, wherein: In the up and down directions, the portion of the upper through groove located above the upper protrusion is defined as a first groove, the portion of the upper through groove located below the upper protrusion is defined as a second groove, the portion of the lower through groove located above the upper protrusion is defined as a third groove, and the portion of the lower through groove located below the lower protrusion is defined as a fourth groove, wherein the maximum width of the first groove is greater than the maximum width of the second groove, and the maximum width of the fourth groove is greater than the maximum width of the third groove.

Images